diff --git a/.github/workflows/e2e.yaml b/.github/workflows/e2e.yaml index c17a7eaaca..990860f268 100644 --- a/.github/workflows/e2e.yaml +++ b/.github/workflows/e2e.yaml @@ -20,6 +20,8 @@ jobs: uses: actions/setup-go@v3 with: go-version: 1.18.x + - name: Compile v3 contracts + run: make compile-v3-contracts - name: Run tests run: make test-e2e - name: Archive test logs diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml index 9a1c351f25..2c1dae5d9d 100644 --- a/.github/workflows/lint.yml +++ b/.github/workflows/lint.yml @@ -24,5 +24,8 @@ jobs: - name: Checkout code uses: actions/checkout@v3 + - name: Compile v3 contracts + run: make compile-v3-contracts + - name: Lint uses: golangci/golangci-lint-action@v3 diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml index 7f00e43063..c647fdf4c2 100644 --- a/.github/workflows/test.yml +++ b/.github/workflows/test.yml @@ -19,6 +19,9 @@ jobs: with: submodules: recursive + - name: Compile v3 contracts + run: make compile-v3-contracts + - name: Run Go Test run: go test -coverprofile coverage.out -timeout 20m `go list ./... | grep -v e2e` diff --git a/.gitignore b/.gitignore index 5468a3c263..b64d4bcd79 100644 --- a/.gitignore +++ b/.gitignore @@ -21,6 +21,9 @@ main # exclude build folder artifacts +consensus/polybft/polybftcontracts/cache +consensus/polybft/polybftcontracts/package-lock.json +node_modules # Log files *.log diff --git a/.gitmodules b/.gitmodules index 3fe487ff8f..00d85f9123 100644 --- a/.gitmodules +++ b/.gitmodules @@ -1,3 +1,6 @@ [submodule "tests/tests"] path = tests/tests url = https://github.com/ethereum/tests.git +[submodule "v3-contracts"] + path = v3-contracts + url = https://github.com/maticnetwork/v3-contracts.git diff --git a/Makefile b/Makefile index 263e0aa0d1..64e5b89b1a 100644 --- a/Makefile +++ b/Makefile @@ -11,10 +11,11 @@ bindata: .PHONY: protoc protoc: protoc --go_out=. --go-grpc_out=. ./server/proto/*.proto - protoc --go_out=. --go-grpc_out=. ./protocol/proto/*.proto + #protoc --go_out=. --go-grpc_out=. ./protocol/proto/*.proto protoc --go_out=. --go-grpc_out=. ./network/proto/*.proto protoc --go_out=. --go-grpc_out=. ./txpool/proto/*.proto protoc --go_out=. --go-grpc_out=. ./consensus/ibft/**/*.proto + protoc --go_out=. --go-grpc_out=. ./consensus/polybft/**/*.proto .PHONY: build build: @@ -57,3 +58,7 @@ run-local: stop-local: docker-compose -f ./docker/local/docker-compose.yml stop +.PHONY: compile-v3-contracts +compile-v3-contracts: + cd consensus/polybft/polybftcontracts && npm install && npm run compile + diff --git a/command/genesis/genesis.go b/command/genesis/genesis.go index 6fb35e0bd6..64f149cfb1 100644 --- a/command/genesis/genesis.go +++ b/command/genesis/genesis.go @@ -25,8 +25,6 @@ func GetCommand() *cobra.Command { setFlags(genesisCmd) setLegacyFlags(genesisCmd) - helper.SetRequiredFlags(genesisCmd, params.getRequiredFlags()) - genesisCmd.AddCommand( // genesis predeploy predeploy.GetCommand(), @@ -148,6 +146,40 @@ func setFlags(cmd *cobra.Command) { "the maximum number of validators in the validator set for PoS", ) } + + // PolyBFT + { + cmd.Flags().IntVar( + ¶ms.validatorSetSize, + validatorSetSizeFlag, + defaultValidatorSetSize, + "the total number of validators", + ) + cmd.Flags().StringVar( + ¶ms.polyBftValidatorPrefixPath, + polyBftValidatorPrefixPathFlag, + defaultPolyBftValidatorPrefixPath, + "prefix path for polybft validator folder directory", + ) + cmd.Flags().Uint64Var( + ¶ms.sprintSize, + sprintSizeFlag, + defaultSprintSize, + "the number of block included into a sprint", + ) + cmd.Flags().DurationVar( + ¶ms.blockTime, + blockTimeFlag, + defaultBlockTime, + "the predefined period which determines block creation frequency", + ) + cmd.Flags().StringArrayVar( + ¶ms.validators, + validatorsFlag, + []string{}, + "validators defined by user throughout a parameter (format:
:)", + ) + } } // setLegacyFlags sets the legacy flags to preserve backwards compatibility @@ -164,11 +196,13 @@ func setLegacyFlags(cmd *cobra.Command) { _ = cmd.Flags().MarkHidden(chainIDFlagLEGACY) } -func runPreRun(_ *cobra.Command, _ []string) error { +func runPreRun(cmd *cobra.Command, _ []string) error { if err := params.validateFlags(); err != nil { return err } + helper.SetRequiredFlags(cmd, params.getRequiredFlags()) + return params.initRawParams() } @@ -176,7 +210,15 @@ func runCommand(cmd *cobra.Command, _ []string) { outputter := command.InitializeOutputter(cmd) defer outputter.WriteOutput() - if err := params.generateGenesis(); err != nil { + var err error + + if params.isPolyBFTConsensus() { + err = params.generatePolyBftGenesis() + } else { + err = params.generateGenesis() + } + + if err != nil { outputter.SetError(err) return diff --git a/command/genesis/params.go b/command/genesis/params.go index e5267effdb..3d2b132cd1 100644 --- a/command/genesis/params.go +++ b/command/genesis/params.go @@ -3,6 +3,7 @@ package genesis import ( "errors" "fmt" + "time" "github.com/0xPolygon/polygon-edge/chain" "github.com/0xPolygon/polygon-edge/command" @@ -72,6 +73,14 @@ type genesisParams struct { consensusEngineConfig map[string]interface{} genesisConfig *chain.Chain + + // PolyBFT + validatorSetSize int + sprintSize uint64 + blockTime time.Duration + validators []string + + polyBftValidatorPrefixPath string } func (p *genesisParams) validateFlags() error { @@ -93,7 +102,7 @@ func (p *genesisParams) validateFlags() error { } // Check that the epoch size is correct - if p.epochSize < 2 && server.ConsensusType(p.consensusRaw) == server.IBFTConsensus { + if p.epochSize < 2 && (p.isIBFTConsensus() || p.isPolyBFTConsensus()) { // Epoch size must be greater than 1, so new transactions have a chance to be added to a block. // Otherwise, every block would be an endblock (meaning it will not have any transactions). // Check is placed here to avoid additional parsing if epochSize < 2 @@ -112,6 +121,10 @@ func (p *genesisParams) isIBFTConsensus() bool { return server.ConsensusType(p.consensusRaw) == server.IBFTConsensus } +func (p *genesisParams) isPolyBFTConsensus() bool { + return server.ConsensusType(p.consensusRaw) == server.PolyBFTConsensus +} + func (p *genesisParams) areValidatorsSetManually() bool { return len(p.ibftValidatorsRaw) != 0 } @@ -121,14 +134,22 @@ func (p *genesisParams) areValidatorsSetByPrefix() bool { } func (p *genesisParams) getRequiredFlags() []string { - return []string{ - command.BootnodeFlag, + if p.isIBFTConsensus() { + return []string{ + command.BootnodeFlag, + } } + + return []string{} } func (p *genesisParams) initRawParams() error { p.consensus = server.ConsensusType(p.consensusRaw) + if p.consensus == server.PolyBFTConsensus { + return nil + } + if err := p.initIBFTValidatorType(); err != nil { return err } diff --git a/command/genesis/polybft_params.go b/command/genesis/polybft_params.go new file mode 100644 index 0000000000..34e9d8ef96 --- /dev/null +++ b/command/genesis/polybft_params.go @@ -0,0 +1,218 @@ +package genesis + +import ( + "encoding/hex" + "fmt" + "path" + "strings" + "time" + + "github.com/0xPolygon/polygon-edge/chain" + "github.com/0xPolygon/polygon-edge/command" + "github.com/0xPolygon/polygon-edge/command/helper" + "github.com/0xPolygon/polygon-edge/consensus/polybft" + "github.com/0xPolygon/polygon-edge/consensus/polybft/bitmap" + "github.com/0xPolygon/polygon-edge/consensus/polybft/polybftcontracts" + "github.com/0xPolygon/polygon-edge/server" + "github.com/0xPolygon/polygon-edge/types" +) + +const ( + polyBftValidatorPrefixPathFlag = "validator-prefix" + + validatorSetSizeFlag = "validator-set-size" + sprintSizeFlag = "sprint-size" + blockTimeFlag = "block-time" + validatorsFlag = "polybft-validators" + + defaultEpochSize = uint64(10) + defaultSprintSize = uint64(5) + defaultValidatorSetSize = 100 + defaultBlockTime = 2 * time.Second + + defaultPolyBftValidatorPrefixPath = "test-chain-" + + bootnodePortStart = 30301 +) + +var ( + // hard code address for the sidechain (this is only being used for testing) + validatorSetAddr = types.StringToAddress("0xBd770416a3345F91E4B34576cb804a576fa48EB1") + sidechainBridgeAddr = types.StringToAddress("0x5a443704dd4B594B382c22a083e2BD3090A6feF3") + sidechainERC20Addr = types.StringToAddress("0x47e9Fbef8C83A1714F1951F142132E6e90F5fa5D") + sidechainERC20BridgeAddr = types.StringToAddress("0x8Be503bcdEd90ED42Eff31f56199399B2b0154CA") +) + +func (p *genesisParams) generatePolyBFTConfig() (*chain.Chain, error) { + validatorsInfo, err := ReadValidatorsByRegexp(path.Dir(p.genesisPath), p.polyBftValidatorPrefixPath) + if err != nil { + return nil, err + } + + smartContracts, err := deployContracts() + if err != nil { + return nil, err + } + + polyBftConfig := &polybft.PolyBFTConfig{ + // TODO: Bridge + InitialValidatorSet: p.getGenesisValidators(validatorsInfo), + BlockTime: p.blockTime, + EpochSize: p.epochSize, + SprintSize: p.sprintSize, + ValidatorSetSize: p.validatorSetSize, + ValidatorSetAddr: validatorSetAddr, + SidechainBridgeAddr: sidechainBridgeAddr, + SmartContracts: smartContracts, + } + + chainConfig := &chain.Chain{ + Name: p.name, + Genesis: &chain.Genesis{ + GasLimit: p.blockGasLimit, + Difficulty: 0, + Alloc: map[types.Address]*chain.GenesisAccount{}, + ExtraData: generateExtraDataPolyBft(validatorsInfo), + GasUsed: command.DefaultGenesisGasUsed, + Mixhash: polybft.PolyMixDigest, + }, + Params: &chain.Params{ + ChainID: int(p.chainID), + Forks: chain.AllForksEnabled, + Engine: map[string]interface{}{ + string(server.PolyBFTConsensus): polyBftConfig, + }, + }, + Bootnodes: p.bootnodes, + } + + // set generic validators as bootnodes if needed + if len(p.bootnodes) == 0 { + for i, validator := range validatorsInfo { + bnode := fmt.Sprintf("/ip4/%s/tcp/%d/p2p/%s", "127.0.0.1", bootnodePortStart+i, validator.NodeID) + chainConfig.Bootnodes = append(chainConfig.Bootnodes, bnode) + } + } + + // Premine accounts + if err := fillPremineMap(chainConfig.Genesis.Alloc, p.premine); err != nil { + return nil, err + } + + return chainConfig, nil +} + +func (p *genesisParams) getGenesisValidators(validators []GenesisTarget) (result []*polybft.Validator) { + if len(p.validators) > 0 { + for _, validator := range p.validators { + parts := strings.Split(validator, ":") + if len(parts) != 2 || len(parts[0]) != 32 || len(parts[1]) < 2 { + continue + } + + result = append(result, &polybft.Validator{ + Address: types.StringToAddress(parts[0]), + BlsKey: parts[1], + }) + } + } else { + for _, validator := range validators { + pubKeyMarshalled := validator.Account.Bls.PublicKey().Marshal() + + result = append(result, &polybft.Validator{ + Address: types.Address(validator.Account.Ecdsa.Address()), + BlsKey: hex.EncodeToString(pubKeyMarshalled), + }) + } + } + + return result +} + +func (p *genesisParams) generatePolyBftGenesis() error { + config, err := params.generatePolyBFTConfig() + if err != nil { + return err + } + + return helper.WriteGenesisConfigToDisk(config, params.genesisPath) +} + +func deployContracts() ([]polybft.SmartContract, error) { + predefinedContracts := []struct { + name string + input []interface{} + expected types.Address + chain string + }{ + { + // Validator smart contract + name: "Validator", + expected: validatorSetAddr, + chain: "child", + }, + { + // Bridge in the sidechain + name: "SidechainBridge", + expected: sidechainBridgeAddr, + chain: "child", + }, + { + // Target ERC20 token + name: "MintERC20", + expected: sidechainERC20Addr, + chain: "child", + }, + { + // Bridge wrapper for ERC20 token + name: "ERC20Bridge", + input: []interface{}{ + sidechainERC20Addr, + }, + expected: sidechainERC20BridgeAddr, + chain: "child", + }, + } + + result := make([]polybft.SmartContract, 0, len(predefinedContracts)) + + for _, contract := range predefinedContracts { + artifact, err := polybftcontracts.ReadArtifact(contract.chain, contract.name) + if err != nil { + return nil, err + } + + input, err := artifact.DeployInput(contract.input) + if err != nil { + return nil, err + } + + smartContract := polybft.SmartContract{ + Address: contract.expected, + Code: input, + Name: fmt.Sprintf("%s/%s", contract.chain, contract.name), + } + + result = append(result, smartContract) + } + + return result, nil +} + +func generateExtraDataPolyBft(validators []GenesisTarget) []byte { + delta := &polybft.ValidatorSetDelta{ + Added: make(polybft.AccountSet, len(validators)), + Removed: bitmap.Bitmap{}, + } + + for i, validator := range validators { + delta.Added[i] = &polybft.ValidatorAccount{ + Address: types.Address(validator.Account.Ecdsa.Address()), + BlsKey: validator.Account.Bls.PublicKey(), + } + } + + extra := polybft.Extra{Validators: delta} + + return append(make([]byte, 32), extra.MarshalRLPTo(nil)...) +} diff --git a/command/genesis/utils.go b/command/genesis/utils.go index ca8c0b4969..49f8904b35 100644 --- a/command/genesis/utils.go +++ b/command/genesis/utils.go @@ -2,12 +2,21 @@ package genesis import ( "fmt" + "io/ioutil" "os" + "path/filepath" + "sort" + "strconv" "strings" "github.com/0xPolygon/polygon-edge/chain" "github.com/0xPolygon/polygon-edge/command" + "github.com/0xPolygon/polygon-edge/consensus/polybft/wallet" + "github.com/0xPolygon/polygon-edge/secrets" + "github.com/0xPolygon/polygon-edge/secrets/helper" + "github.com/0xPolygon/polygon-edge/secrets/local" "github.com/0xPolygon/polygon-edge/types" + "github.com/hashicorp/go-hclog" ) const ( @@ -81,3 +90,83 @@ func fillPremineMap( return nil } + +type GenesisTarget struct { + Account *wallet.Account + NodeID string +} + +func ReadValidatorsByRegexp(dir, prefix string) ([]GenesisTarget, error) { + if dir == "" { + dir = "." + } + + files, err := ioutil.ReadDir(dir) + if err != nil { + return nil, err + } + + validCnt := 0 + + for _, file := range files { + if file.IsDir() && strings.HasPrefix(file.Name(), prefix) { + files[validCnt] = file + validCnt++ + } + } + + files = files[0:validCnt] + + // we must sort files by number after the prefix not by name string + sort.Slice(files, func(i, j int) bool { + f := strings.TrimPrefix(files[i].Name(), prefix) + s := strings.TrimPrefix(files[j].Name(), prefix) + num1, _ := strconv.Atoi(strings.TrimLeft(f, "-")) + num2, _ := strconv.Atoi(strings.TrimLeft(s, "-")) + + return num1 < num2 + }) + + validators := make([]GenesisTarget, 0, len(files)) + + for _, file := range files { + path := filepath.Join(dir, file.Name()) + + account, nodeID, err := getSecrets(path) + if err != nil { + return nil, err + } + + target := GenesisTarget{Account: account, NodeID: nodeID} + validators = append(validators, target) + } + + return validators, nil +} + +func getSecrets(directory string) (*wallet.Account, string, error) { + baseConfig := &secrets.SecretsManagerParams{ + Logger: hclog.NewNullLogger(), + Extra: map[string]interface{}{ + secrets.Path: directory, + }, + } + + localManager, err := local.SecretsManagerFactory(nil, baseConfig) + if err != nil { + return nil, "", fmt.Errorf("unable to instantiate local secrets manager, %w", err) + } + + nodeID, err := helper.LoadNodeID(localManager) + if err != nil { + return nil, "", err + } + + account, err := wallet.GenerateNewAccountFromSecret( + localManager, secrets.ValidatorBLSKey) + if err != nil { + return nil, "", err + } + + return account, nodeID, nil +} diff --git a/command/polybftsecrets/params.go b/command/polybftsecrets/params.go new file mode 100644 index 0000000000..555bd32c79 --- /dev/null +++ b/command/polybftsecrets/params.go @@ -0,0 +1,207 @@ +package polybftsecrets + +import ( + "encoding/hex" + "errors" + "fmt" + + "github.com/0xPolygon/polygon-edge/command" + "github.com/0xPolygon/polygon-edge/consensus/polybft/wallet" + "github.com/0xPolygon/polygon-edge/secrets" + "github.com/0xPolygon/polygon-edge/secrets/helper" + "github.com/0xPolygon/polygon-edge/types" + "github.com/spf13/cobra" +) + +const ( + dataPathFlag = "data-dir" + configFlag = "config" + accountFlag = "account" + networkFlag = "network" + numFlag = "num" + + // maxInitNum is the maximum value for "num" flag + maxInitNum = 30 +) + +var ( + errInvalidNum = fmt.Errorf("num flag value should be between 1 and %d", maxInitNum) + errInvalidConfig = errors.New("invalid secrets configuration") + errInvalidParams = errors.New("no config file or data directory passed in") + errUnsupportedType = errors.New("unsupported secrets manager") +) + +type initParams struct { + dataPath string + configPath string + generatesAccount bool + generatesNetwork bool + + numberOfSecrets int +} + +func (ip *initParams) validateFlags() error { + if ip.numberOfSecrets < 1 || ip.numberOfSecrets > maxInitNum { + return errInvalidNum + } + + if ip.dataPath == "" && ip.configPath == "" { + return errInvalidParams + } + + return nil +} + +func (ip *initParams) setFlags(cmd *cobra.Command) { + cmd.Flags().StringVar( + &ip.dataPath, + dataPathFlag, + "", + "the directory for the Polygon Edge data if the local FS is used", + ) + + cmd.Flags().StringVar( + &ip.configPath, + configFlag, + "", + "the path to the SecretsManager config file, "+ + "if omitted, the local FS secrets manager is used", + ) + + cmd.Flags().IntVar( + &ip.numberOfSecrets, + numFlag, + 1, + "the flag indicating how many secrets should be created, only for the local FS", + ) + + // Don't accept data-dir and config flags because they are related to different secrets managers. + // data-dir is about the local FS as secrets storage, config is about remote secrets manager. + cmd.MarkFlagsMutuallyExclusive(dataPathFlag, configFlag) + + // num flag should be used with data-dir flag only so it should not be used with config flag. + cmd.MarkFlagsMutuallyExclusive(numFlag, configFlag) + + cmd.Flags().BoolVar( + &ip.generatesAccount, + accountFlag, + true, + "the flag indicating whether new account is created", + ) + + cmd.Flags().BoolVar( + &ip.generatesNetwork, + networkFlag, + true, + "the flag indicating whether new Network key is created", + ) +} + +func (ip *initParams) Execute() (Results, error) { + results := make(Results, ip.numberOfSecrets) + + for i := 0; i < ip.numberOfSecrets; i++ { + configDir, dataDir := ip.configPath, ip.dataPath + + if ip.numberOfSecrets > 1 { + dataDir = fmt.Sprintf("%s%d", ip.dataPath, i+1) + } + + if configDir != "" && ip.numberOfSecrets > 1 { + configDir = fmt.Sprintf("%s%d", ip.configPath, i+1) + } + + secretManager, err := getSecretsManager(dataDir, configDir) + if err != nil { + return results, err + } + + err = ip.initKeys(secretManager) + if err != nil { + return results, err + } + + res, err := ip.getResult(secretManager) + if err != nil { + return results, err + } + + results[i] = res + } + + return results, nil +} + +func (ip *initParams) initKeys(secretsManager secrets.SecretsManager) error { + if ip.generatesNetwork { + if _, err := helper.InitNetworkingPrivateKey(secretsManager); err != nil { + return err + } + } + + if ip.generatesAccount { + if secretsManager.HasSecret(secrets.ValidatorBLSKey) { + return fmt.Errorf(`secrets "%s" has been already initialized`, secrets.ValidatorBLSKey) + } + + account := wallet.GenerateAccount() + + bytes, err := account.ToBytes() + if err != nil { + return err + } + + err = secretsManager.SetSecret( + secrets.ValidatorBLSKey, + bytes) + if err != nil { + return err + } + } + + return nil +} + +// getResult gets keys from secret manager and return result to display +func (ip *initParams) getResult(secretsManager secrets.SecretsManager) (command.CommandResult, error) { + var ( + res = &SecretsInitResult{} + err error + ) + + if ip.generatesNetwork { + account, err := wallet.GenerateNewAccountFromSecret( + secretsManager, secrets.ValidatorBLSKey) + if err != nil { + return nil, err + } + + res.Address = types.Address(account.Ecdsa.Address()) + res.BLSPubkey = hex.EncodeToString(account.Bls.PublicKey().Marshal()) + } + + if ip.generatesNetwork { + if res.NodeID, err = helper.LoadNodeID(secretsManager); err != nil { + return nil, err + } + } + + return res, nil +} + +func getSecretsManager(dataPath, configPath string) (secrets.SecretsManager, error) { + if configPath != "" { + secretsConfig, readErr := secrets.ReadConfig(configPath) + if readErr != nil { + return nil, errInvalidConfig + } + + if !secrets.SupportedServiceManager(secretsConfig.Type) { + return nil, errUnsupportedType + } + + return helper.InitCloudSecretsManager(secretsConfig) + } + + return helper.SetupLocalSecretsManager(dataPath) +} diff --git a/command/polybftsecrets/result.go b/command/polybftsecrets/result.go new file mode 100644 index 0000000000..0d9a583655 --- /dev/null +++ b/command/polybftsecrets/result.go @@ -0,0 +1,55 @@ +package polybftsecrets + +import ( + "bytes" + "fmt" + + "github.com/0xPolygon/polygon-edge/command" + + "github.com/0xPolygon/polygon-edge/command/helper" + "github.com/0xPolygon/polygon-edge/types" +) + +type Results []command.CommandResult + +func (r Results) GetOutput() string { + var buffer bytes.Buffer + + for _, result := range r { + buffer.WriteString(result.GetOutput()) + } + + return buffer.String() +} + +type SecretsInitResult struct { + Address types.Address `json:"address"` + BLSPubkey string `json:"bls_pubkey"` + NodeID string `json:"node_id"` +} + +func (r *SecretsInitResult) GetOutput() string { + var buffer bytes.Buffer + + vals := make([]string, 0, 3) + + vals = append( + vals, + fmt.Sprintf("Public key (address)|%s", r.Address.String()), + ) + + if r.BLSPubkey != "" { + vals = append( + vals, + fmt.Sprintf("BLS Public key|%s", r.BLSPubkey), + ) + } + + vals = append(vals, fmt.Sprintf("Node ID|%s", r.NodeID)) + + buffer.WriteString("\n[SECRETS INIT]\n") + buffer.WriteString(helper.FormatKV(vals)) + buffer.WriteString("\n") + + return buffer.String() +} diff --git a/command/polybftsecrets/secrets_init.go b/command/polybftsecrets/secrets_init.go new file mode 100644 index 0000000000..8665b78923 --- /dev/null +++ b/command/polybftsecrets/secrets_init.go @@ -0,0 +1,41 @@ +package polybftsecrets + +import ( + "github.com/spf13/cobra" + + "github.com/0xPolygon/polygon-edge/command" +) + +var basicParams = &initParams{} + +func GetCommand() *cobra.Command { + secretsInitCmd := &cobra.Command{ + Use: "polybft-secrets", + Short: "Initializes private keys for the Polygon Edge (Validator + Networking) " + + "to the specified Secrets Manager", + PreRunE: runPreRun, + Run: runCommand, + } + + basicParams.setFlags(secretsInitCmd) + + return secretsInitCmd +} + +func runPreRun(_ *cobra.Command, _ []string) error { + return basicParams.validateFlags() +} + +func runCommand(cmd *cobra.Command, _ []string) { + outputter := command.InitializeOutputter(cmd) + defer outputter.WriteOutput() + + results, err := basicParams.Execute() + if err != nil { + outputter.SetError(err) + + return + } + + outputter.SetCommandResult(results) +} diff --git a/command/root/root.go b/command/root/root.go index ffb3e28c25..ef239c8145 100644 --- a/command/root/root.go +++ b/command/root/root.go @@ -12,6 +12,7 @@ import ( "github.com/0xPolygon/polygon-edge/command/loadbot" "github.com/0xPolygon/polygon-edge/command/monitor" "github.com/0xPolygon/polygon-edge/command/peers" + "github.com/0xPolygon/polygon-edge/command/polybftsecrets" "github.com/0xPolygon/polygon-edge/command/secrets" "github.com/0xPolygon/polygon-edge/command/server" "github.com/0xPolygon/polygon-edge/command/status" @@ -54,6 +55,7 @@ func (rc *RootCommand) registerSubCommands() { server.GetCommand(), whitelist.GetCommand(), license.GetCommand(), + polybftsecrets.GetCommand(), ) } diff --git a/consensus/ibft/proto/ibft_operator.pb.go b/consensus/ibft/proto/ibft_operator.pb.go index 8504770798..2863467466 100644 --- a/consensus/ibft/proto/ibft_operator.pb.go +++ b/consensus/ibft/proto/ibft_operator.pb.go @@ -1,15 +1,15 @@ // Code generated by protoc-gen-go. DO NOT EDIT. // versions: // protoc-gen-go v1.28.1 -// protoc v3.12.4 +// protoc v3.21.7 // source: consensus/ibft/proto/ibft_operator.proto package proto import ( - empty "github.com/golang/protobuf/ptypes/empty" protoreflect "google.golang.org/protobuf/reflect/protoreflect" protoimpl "google.golang.org/protobuf/runtime/protoimpl" + emptypb "google.golang.org/protobuf/types/known/emptypb" reflect "reflect" sync "sync" ) @@ -573,7 +573,7 @@ var file_consensus_ibft_proto_ibft_operator_proto_goTypes = []interface{}{ (*Candidate)(nil), // 5: v1.Candidate (*Snapshot_Validator)(nil), // 6: v1.Snapshot.Validator (*Snapshot_Vote)(nil), // 7: v1.Snapshot.Vote - (*empty.Empty)(nil), // 8: google.protobuf.Empty + (*emptypb.Empty)(nil), // 8: google.protobuf.Empty } var file_consensus_ibft_proto_ibft_operator_proto_depIdxs = []int32{ 6, // 0: v1.Snapshot.validators:type_name -> v1.Snapshot.Validator diff --git a/consensus/ibft/proto/ibft_operator_grpc.pb.go b/consensus/ibft/proto/ibft_operator_grpc.pb.go index 5e0322b92c..dac75a466f 100644 --- a/consensus/ibft/proto/ibft_operator_grpc.pb.go +++ b/consensus/ibft/proto/ibft_operator_grpc.pb.go @@ -1,17 +1,17 @@ // Code generated by protoc-gen-go-grpc. DO NOT EDIT. // versions: // - protoc-gen-go-grpc v1.2.0 -// - protoc v3.12.4 +// - protoc v3.21.7 // source: consensus/ibft/proto/ibft_operator.proto package proto import ( context "context" - empty "github.com/golang/protobuf/ptypes/empty" grpc "google.golang.org/grpc" codes "google.golang.org/grpc/codes" status "google.golang.org/grpc/status" + emptypb "google.golang.org/protobuf/types/known/emptypb" ) // This is a compile-time assertion to ensure that this generated file @@ -24,9 +24,9 @@ const _ = grpc.SupportPackageIsVersion7 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream. type IbftOperatorClient interface { GetSnapshot(ctx context.Context, in *SnapshotReq, opts ...grpc.CallOption) (*Snapshot, error) - Propose(ctx context.Context, in *Candidate, opts ...grpc.CallOption) (*empty.Empty, error) - Candidates(ctx context.Context, in *empty.Empty, opts ...grpc.CallOption) (*CandidatesResp, error) - Status(ctx context.Context, in *empty.Empty, opts ...grpc.CallOption) (*IbftStatusResp, error) + Propose(ctx context.Context, in *Candidate, opts ...grpc.CallOption) (*emptypb.Empty, error) + Candidates(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*CandidatesResp, error) + Status(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*IbftStatusResp, error) } type ibftOperatorClient struct { @@ -46,8 +46,8 @@ func (c *ibftOperatorClient) GetSnapshot(ctx context.Context, in *SnapshotReq, o return out, nil } -func (c *ibftOperatorClient) Propose(ctx context.Context, in *Candidate, opts ...grpc.CallOption) (*empty.Empty, error) { - out := new(empty.Empty) +func (c *ibftOperatorClient) Propose(ctx context.Context, in *Candidate, opts ...grpc.CallOption) (*emptypb.Empty, error) { + out := new(emptypb.Empty) err := c.cc.Invoke(ctx, "/v1.IbftOperator/Propose", in, out, opts...) if err != nil { return nil, err @@ -55,7 +55,7 @@ func (c *ibftOperatorClient) Propose(ctx context.Context, in *Candidate, opts .. return out, nil } -func (c *ibftOperatorClient) Candidates(ctx context.Context, in *empty.Empty, opts ...grpc.CallOption) (*CandidatesResp, error) { +func (c *ibftOperatorClient) Candidates(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*CandidatesResp, error) { out := new(CandidatesResp) err := c.cc.Invoke(ctx, "/v1.IbftOperator/Candidates", in, out, opts...) if err != nil { @@ -64,7 +64,7 @@ func (c *ibftOperatorClient) Candidates(ctx context.Context, in *empty.Empty, op return out, nil } -func (c *ibftOperatorClient) Status(ctx context.Context, in *empty.Empty, opts ...grpc.CallOption) (*IbftStatusResp, error) { +func (c *ibftOperatorClient) Status(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*IbftStatusResp, error) { out := new(IbftStatusResp) err := c.cc.Invoke(ctx, "/v1.IbftOperator/Status", in, out, opts...) if err != nil { @@ -78,9 +78,9 @@ func (c *ibftOperatorClient) Status(ctx context.Context, in *empty.Empty, opts . // for forward compatibility type IbftOperatorServer interface { GetSnapshot(context.Context, *SnapshotReq) (*Snapshot, error) - Propose(context.Context, *Candidate) (*empty.Empty, error) - Candidates(context.Context, *empty.Empty) (*CandidatesResp, error) - Status(context.Context, *empty.Empty) (*IbftStatusResp, error) + Propose(context.Context, *Candidate) (*emptypb.Empty, error) + Candidates(context.Context, *emptypb.Empty) (*CandidatesResp, error) + Status(context.Context, *emptypb.Empty) (*IbftStatusResp, error) mustEmbedUnimplementedIbftOperatorServer() } @@ -91,13 +91,13 @@ type UnimplementedIbftOperatorServer struct { func (UnimplementedIbftOperatorServer) GetSnapshot(context.Context, *SnapshotReq) (*Snapshot, error) { return nil, status.Errorf(codes.Unimplemented, "method GetSnapshot not implemented") } -func (UnimplementedIbftOperatorServer) Propose(context.Context, *Candidate) (*empty.Empty, error) { +func (UnimplementedIbftOperatorServer) Propose(context.Context, *Candidate) (*emptypb.Empty, error) { return nil, status.Errorf(codes.Unimplemented, "method Propose not implemented") } -func (UnimplementedIbftOperatorServer) Candidates(context.Context, *empty.Empty) (*CandidatesResp, error) { +func (UnimplementedIbftOperatorServer) Candidates(context.Context, *emptypb.Empty) (*CandidatesResp, error) { return nil, status.Errorf(codes.Unimplemented, "method Candidates not implemented") } -func (UnimplementedIbftOperatorServer) Status(context.Context, *empty.Empty) (*IbftStatusResp, error) { +func (UnimplementedIbftOperatorServer) Status(context.Context, *emptypb.Empty) (*IbftStatusResp, error) { return nil, status.Errorf(codes.Unimplemented, "method Status not implemented") } func (UnimplementedIbftOperatorServer) mustEmbedUnimplementedIbftOperatorServer() {} @@ -150,7 +150,7 @@ func _IbftOperator_Propose_Handler(srv interface{}, ctx context.Context, dec fun } func _IbftOperator_Candidates_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) { - in := new(empty.Empty) + in := new(emptypb.Empty) if err := dec(in); err != nil { return nil, err } @@ -162,13 +162,13 @@ func _IbftOperator_Candidates_Handler(srv interface{}, ctx context.Context, dec FullMethod: "/v1.IbftOperator/Candidates", } handler := func(ctx context.Context, req interface{}) (interface{}, error) { - return srv.(IbftOperatorServer).Candidates(ctx, req.(*empty.Empty)) + return srv.(IbftOperatorServer).Candidates(ctx, req.(*emptypb.Empty)) } return interceptor(ctx, in, info, handler) } func _IbftOperator_Status_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) { - in := new(empty.Empty) + in := new(emptypb.Empty) if err := dec(in); err != nil { return nil, err } @@ -180,7 +180,7 @@ func _IbftOperator_Status_Handler(srv interface{}, ctx context.Context, dec func FullMethod: "/v1.IbftOperator/Status", } handler := func(ctx context.Context, req interface{}) (interface{}, error) { - return srv.(IbftOperatorServer).Status(ctx, req.(*empty.Empty)) + return srv.(IbftOperatorServer).Status(ctx, req.(*emptypb.Empty)) } return interceptor(ctx, in, info, handler) } diff --git a/consensus/polybft/bitmap/bitmap.go b/consensus/polybft/bitmap/bitmap.go new file mode 100644 index 0000000000..f183e57dd8 --- /dev/null +++ b/consensus/polybft/bitmap/bitmap.go @@ -0,0 +1,37 @@ +package bitmap + +// Bitmap Index 0 is LSB from the first bitmap byte +type Bitmap []byte + +func (b *Bitmap) Set(idx uint64) { + index := idx / 8 + *b = extendByteSlice(*b, int(index)+1) + + bit := uint8(1 << (idx % 8)) + (*b)[idx/8] |= bit +} + +func (b *Bitmap) Len() uint64 { + return uint64(len(*b) * 8) +} + +func (b *Bitmap) IsSet(idx uint64) bool { + if length := b.Len(); length <= idx { + return false + } + + bit := uint8(1 << (idx % 8)) + + return (*b)[idx/8]&bit == bit +} + +func extendByteSlice(b []byte, needLen int) []byte { + // for example if we need to store idx 277 we need 35 bytes + // But if have slice which length is 5 bytes we need to add additional 30 bytes + // append function is smart enough to use capacity of slice if needed otherwise it will create new slice + if n := needLen - len(b); n > 0 { + b = append(b, make([]byte, n)...) + } + + return b +} diff --git a/consensus/polybft/bitmap/bitmap_test.go b/consensus/polybft/bitmap/bitmap_test.go new file mode 100644 index 0000000000..24aac0bf43 --- /dev/null +++ b/consensus/polybft/bitmap/bitmap_test.go @@ -0,0 +1,56 @@ +package bitmap + +import ( + "testing" + + "github.com/stretchr/testify/assert" +) + +func TestBitmap_Set(t *testing.T) { + data := []int{8, 15, 0, 7, 31, 60, 112, 7, 16, 241, 189, 60, 0, 19, 14, 25} + unique := map[int]struct{}{} + + b := Bitmap{} + + for _, v := range data { + unique[v] = struct{}{} + + b.Set(uint64(v)) + } + + // check if only values from data are populated + for _, v := range data { + assert.True(t, b.IsSet(uint64(v))) + } + + cntSet := 0 + + for i := uint64(0); i < b.Len(); i++ { + if _, exists := unique[int(i)]; exists { + cntSet++ + } + } + + assert.Equal(t, len(unique), cntSet) +} + +func TestBitmap_Extend(t *testing.T) { + data := [][2]int{ + {0, 1}, + {8, 2}, + {15, 2}, + {30, 4}, + {17, 4}, + {120, 16}, + {39, 16}, + {277, 35}, + {8, 35}, + } + b := Bitmap{} + + for _, dt := range data { + b.Set(uint64(dt[0])) + assert.True(t, b.Len() == uint64(dt[1])*8, dt[0]) + assert.Len(t, b, dt[1]) + } +} diff --git a/consensus/polybft/block_builder.go b/consensus/polybft/block_builder.go new file mode 100644 index 0000000000..37dccf6524 --- /dev/null +++ b/consensus/polybft/block_builder.go @@ -0,0 +1,290 @@ +package polybft + +import ( + "time" + + "github.com/0xPolygon/polygon-edge/chain" + "github.com/0xPolygon/polygon-edge/consensus" + "github.com/0xPolygon/polygon-edge/consensus/ibft/signer" + "github.com/0xPolygon/polygon-edge/state" + "github.com/0xPolygon/polygon-edge/types" +) + +// TODO: Add opentracing + +// type txStatus uint8 + +// const ( +// success txStatus = iota +// fail +// skip +// nothing +// ) + +// type txPoolInterface interface { +// Prepare() +// Length() uint64 +// Peek() *types.Transaction +// Pop(tx *types.Transaction) +// Drop(tx *types.Transaction) +// Demote(tx *types.Transaction) +// ResetWithHeaders(headers ...*types.Header) +// SetSealing(bool) +// } + +// type txEvmTransition interface { +// Write(txn *types.Transaction) error +// WriteFailedReceipt(txn *types.Transaction) error +// } + +// BlockBuilderParams are fields for the block that cannot be changed +type BlockBuilderParams struct { + // Parent block + Parent *types.Header + + Executor *state.Executor + + // Coinbase that is signing the block + Coinbase types.Address + + // ChainConfig is the configurtion of the chain + ChainConfig *chain.Params + + // ChainContext interface is used during EVM execution + //ChainContext core.ChainContext + + // Vanity extra for the block + Extra []byte + + // GasLimit is the gas limit for the block + GasLimit uint64 + + // duration for one block + BlockTime time.Duration + + // Logger + //Logger hcf.Logger + + // TxPool txPoolInterface // Reference to the transaction pool +} + +func NewBlockBuilder(params *BlockBuilderParams) *BlockBuilder { + // extra can only be 32 size max. it is better to trim that to return + // an error that we have to propagate. It should be up to higher level + // code to error if the extra supplied by the user is too big. + if len(params.Extra) > signer.IstanbulExtraVanity { + params.Extra = params.Extra[:signer.IstanbulExtraVanity] + } + + if params.Extra == nil { + params.Extra = make([]byte, 0) + } + + if params.BlockTime == 0 { + params.BlockTime = time.Second * 2 // TODO: is this ok? + } + + builder := &BlockBuilder{ + params: params, + } + builder.Reset() + + return builder +} + +var _ blockBuilder = &BlockBuilder{} + +type BlockBuilder struct { + // input params for the block + params *BlockBuilderParams + + // header is the header for the block being created + header *types.Header + + // transactions are the data included in the block + txns []*types.Transaction + + // block is a reference to the already built block + block *types.Block + + state *state.Transition +} + +// Reset is used to indicate that the current block building has been interrupted +// and it has to clean any data +func (b *BlockBuilder) Reset() { + b.header = &types.Header{ + ParentHash: b.params.Parent.Hash, + Number: b.params.Parent.Number + 1, + Miner: b.params.Coinbase[:], + Difficulty: 1, + ExtraData: b.params.Extra, + StateRoot: types.EmptyRootHash, // this avoids needing state for now + TxRoot: types.EmptyRootHash, + ReceiptsRoot: types.EmptyRootHash, // this avoids needing state for now + Sha3Uncles: types.EmptyUncleHash, + GasLimit: b.params.GasLimit, //will need to adjust dynamically later. + } + + b.block = nil + b.txns = []*types.Transaction{} + + transition, err := b.params.Executor.BeginTxn(b.params.Parent.StateRoot, b.header, b.params.Coinbase) + if err != nil { + panic(err) + } + + b.state = transition +} + +// Block returns the built block if nil, it is not built yet +func (b *BlockBuilder) Block() *types.Block { + return b.block +} + +// Build creates the state and the final block +func (b *BlockBuilder) Build(handler func(h *types.Header)) (*StateBlock, error) { + if handler != nil { + handler(b.header) + } + + // TODO: Nemanja - see what to do with gas + // calculate gas limit based on parent header + //gasLimit, err := b.blockchain.CalculateGasLimit(header.Number) + // if err != nil { + // return nil, err + // } + // header.GasLimit = gasLimit + + // Nemanja - fill transactions + // txs := i.writeTransactions(gasLimit, header.Number, transition) + + // if err := i.PreCommitState(header, transition); err != nil { + // return nil, err + // } + + _, root := b.state.Commit() + b.header.StateRoot = root + b.header.GasUsed = b.state.TotalGas() + + // build the block + b.block = consensus.BuildBlock(consensus.BuildBlockParams{ + Header: b.header, + Txns: b.txns, + Receipts: b.state.Receipts(), + }) + + b.block.Header.ComputeHash() + + return &StateBlock{ + Block: b.block, + Receipts: b.state.Receipts(), + State: b.state, + }, nil +} + +/* +// Fill fills the block with transactions from the txpool +func (b *BlockBuilder) Fill() (successful int, failed int, skipped int, timeout bool) { + executed := make([]*types.Transaction, 0) + + var blockTimer = time.NewTimer(b.params.BlockTime) + + defer func() { + b.params.Logger.Info( + "executed txs", + "successful", successful, + "failed", failed, + "skipped", skipped, + "remaining", b.params.TxPool.Length(), + ) + }() + + b.params.TxPool.Prepare() + +write: + for { + select { + case <-blockTimer.C: + return successful, failed, skipped, true + default: + tx := b.params.TxPool.Peek() + // execute transactions one by one + result, ok := b.writeTransaction(tx) + + if !ok { + break write + } + + switch result { + case success: + executed = append(executed, tx) + successful++ + case fail: + failed++ + case skip: + skipped++ + } + } + } + + // wait for the timer to expire + <-blockTimer.C + + return successful, failed, skipped, false +} + +func (b *BlockBuilder) writeTransaction( + tx *types.Transaction) (txstat txStatus, continueProcessing bool) { + if tx == nil { + return skip, false + } + + if tx.ExceedsBlockGasLimit(b.params.GasLimit) { + b.params.TxPool.Drop(tx) + + if err := b.params.Transition.WriteFailedReceipt(tx); err != nil { + b.params.Logger.Error( + fmt.Sprintf( + "unable to write failed receipt for transaction %s", + tx.Hash, + ), + ) + } + + // continue processing + return fail, true + } + + if err := b.params.Transition.Write(tx); err != nil { + if _, ok := err.(*state.GasLimitReachedTransitionApplicationError); ok { //nolint:errorlint + // stop processing + return nothing, false + } else if appErr, ok := err.(*state.TransitionApplicationError); ok && appErr.IsRecoverable { //nolint:errorlint + b.params.TxPool.Demote(tx) + + return skip, true + } else { + b.params.TxPool.Drop(tx) + + return fail, true + } + } + + b.params.TxPool.Pop(tx) + + return success, true +} +*/ + +// GetState returns StateDB reference +func (b *BlockBuilder) GetState() *state.Transition { + return b.state +} + +// StateBlock is a block with the full state it modifies +type StateBlock struct { + Block *types.Block + Receipts []*types.Receipt + State *state.Transition +} diff --git a/consensus/polybft/blockchain_wrapper.go b/consensus/polybft/blockchain_wrapper.go new file mode 100644 index 0000000000..a329095a2e --- /dev/null +++ b/consensus/polybft/blockchain_wrapper.go @@ -0,0 +1,191 @@ +package polybft + +import ( + "fmt" + "math/big" + + "github.com/0xPolygon/polygon-edge/blockchain" + "github.com/0xPolygon/polygon-edge/consensus" + "github.com/0xPolygon/polygon-edge/state" + "github.com/0xPolygon/polygon-edge/types" + "github.com/umbracle/ethgo" + "github.com/umbracle/ethgo/contract" +) + +// // ethereumBackend is an interface that wraps the methods called on ethereum backend protocol +// type ethereumBackend interface { +// // PeersLen returns the number of peers the node is connected to +// PeersLen() int +// // TxPool returns the current transaction pool +// TxPool() *core.TxPool +// // Broadcast block broadcasts the newly inserted block to the rest of the peers +// BroadcastBlock(block *types.Block, propagate bool) +// // GenesisGasLimit returns the initial gas limit for a block +// GenesisGasLimit() uint64 +// } + +// blockchain is an interface that wraps the methods called on blockchain +type blockchainBackend interface { + // CurrentHeader returns the header of blockchain block head + CurrentHeader() *types.Header + + // CommitBlock commits a block to the chain. + CommitBlock(stateBlock *StateBlock) error + + // NewBlockBuilder is a factory method that returns a block builder on top of 'parent'. + NewBlockBuilder(parent *types.Header, coinbase types.Address) (blockBuilder, error) + + // ProcessBlock builds a final block from given 'block' on top of 'parent'. + ProcessBlock(parent *types.Header, block *types.Block) (*StateBlock, error) + + // GetStateProviderForBlock returns a reference to make queries to the state at 'block'. + GetStateProviderForBlock(block *types.Header) (contract.Provider, error) + + // GetStateProvider returns a reference to make queries to the provided state. + GetStateProvider(transition *state.Transition) contract.Provider + + // GetHeaderByNumber returns a reference to block header for the given block number. + GetHeaderByNumber(number uint64) (*types.Header, bool) + + // GetHeaderByHash returns a reference to block header for the given block hash + GetHeaderByHash(hash types.Hash) (*types.Header, bool) + + // GetSystemState creates a new instance of SystemState interface + GetSystemState(config *PolyBFTConfig, provider contract.Provider) SystemState + + SubscribeEvents() blockchain.Subscription +} + +var _ blockchainBackend = &blockchainWrapper{} + +type blockchainWrapper struct { + executor *state.Executor + blockchain *blockchain.Blockchain +} + +// CurrentHeader returns the header of blockchain block head +func (p *blockchainWrapper) CurrentHeader() *types.Header { + return p.blockchain.Header() +} + +// CommitBlock commits a block to the chain +func (p *blockchainWrapper) CommitBlock(stateBlock *StateBlock) error { + // logs := buildLogsFromReceipts(stateBlock.Receipts, stateBlock.Block.GetHeader()) + // status, err := p.blockchain.WriteBlockAndSetHead(stateBlock.Block, + // stateBlock.Receipts, logs, stateBlock.State, true) + // if err != nil { + // return err + // } else if status != core.CanonStatTy { + // return fmt.Errorf("non canonical change") + // } + return p.blockchain.WriteBlock(stateBlock.Block, "consensus") +} + +// ProcessBlock builds a final block from given 'block' on top of 'parent' +func (p *blockchainWrapper) ProcessBlock(parent *types.Header, block *types.Block) (*StateBlock, error) { + // TODO: Call validate block in polybft + header := block.Header.Copy() + + //transition, err := p.executor.BeginTxn(parent.Hash, header, b.params.Coinbase) + transition, err := p.executor.BeginTxn(parent.StateRoot, header, types.Address{}) + if err != nil { + return nil, err + } + + // Nemanja - apply transactions from block + + _, root := transition.Commit() + + if root != block.Header.StateRoot { + return nil, fmt.Errorf("incorrect state root: (%s, %s)", root, block.Header.StateRoot) + } + + // build the block + found := consensus.BuildBlock(consensus.BuildBlockParams{ + Header: header, + Txns: block.Transactions, + Receipts: transition.Receipts(), + }) + + return &StateBlock{ + Block: found, + Receipts: transition.Receipts(), + State: transition, + }, nil +} + +// GetStateProviderForBlock is an implementation of blockchainBackend interface +func (p *blockchainWrapper) GetStateProviderForBlock(header *types.Header) (contract.Provider, error) { + transition, err := p.executor.BeginTxn(header.StateRoot, header, types.ZeroAddress) + if err != nil { + return nil, err + } + + return NewStateProvider(transition), nil +} + +// GetStateProvider returns a reference to make queries to the provided state +func (p *blockchainWrapper) GetStateProvider(transition *state.Transition) contract.Provider { + return NewStateProvider(transition) +} + +// GetHeaderByNumber is an implementation of blockchainBackend interface +func (p *blockchainWrapper) GetHeaderByNumber(number uint64) (*types.Header, bool) { + return p.blockchain.GetHeaderByNumber(number) +} + +// GetHeaderByHash is an implementation of blockchainBackend interface +func (p *blockchainWrapper) GetHeaderByHash(hash types.Hash) (*types.Header, bool) { + return p.blockchain.GetHeaderByHash(hash) +} + +// NewBlockBuilder is an implementation of blockchainBackend interface +func (p *blockchainWrapper) NewBlockBuilder( + parent *types.Header, coinbase types.Address) (blockBuilder, error) { + return NewBlockBuilder(&BlockBuilderParams{ + Parent: parent, + Coinbase: coinbase, + ChainConfig: p.blockchain.Config(), + //ChainContext: p.blockchain, + //TxPoolFactory: blockbuilder.NewEthTxPool(p.eth.TxPool()), + Executor: p.executor, + GasLimit: 10000000, // TODO: Nemanja - see what to do with this (p.eth.GenesisGasLimit(),) + }), nil +} + +// GetSystemState is an implementation of blockchainBackend interface +func (p *blockchainWrapper) GetSystemState(config *PolyBFTConfig, provider contract.Provider) SystemState { + return NewSystemState(config, provider) +} + +func (p *blockchainWrapper) SubscribeEvents() blockchain.Subscription { + return p.blockchain.SubscribeEvents() +} + +var _ contract.Provider = &stateProvider{} + +type stateProvider struct { + transition *state.Transition +} + +// NewStateProvider initializes EVM against given state and chain config and returns stateProvider instance +// which is an abstraction for smart contract calls +func NewStateProvider(transition *state.Transition) contract.Provider { + return &stateProvider{transition: transition} +} + +// Call implements the contract.Provider interface to make contract calls directly to the state +func (s *stateProvider) Call(addr ethgo.Address, input []byte, opts *contract.CallOpts) ([]byte, error) { + result := s.transition.Call2(types.ZeroAddress, types.Address(addr), input, big.NewInt(0), 10000000) + if result.Failed() { + return nil, result.Err + } + + return result.ReturnValue, nil +} + +// Txn is part of the contract.Provider interface to make Ethereum transactions. We disable this function +// since the system state does not make any transaction +func (s *stateProvider) Txn(ethgo.Address, ethgo.Key, []byte) (contract.Txn, error) { + panic("we do not make transaction in system state") +} diff --git a/consensus/polybft/consensus_runtime.go b/consensus/polybft/consensus_runtime.go new file mode 100644 index 0000000000..3d849926ed --- /dev/null +++ b/consensus/polybft/consensus_runtime.go @@ -0,0 +1,850 @@ +package polybft + +import ( + "encoding/hex" + "errors" + "fmt" + "sync" + "sync/atomic" + + "github.com/0xPolygon/pbft-consensus" + "github.com/0xPolygon/polygon-edge/consensus/polybft/bitmap" + bls "github.com/0xPolygon/polygon-edge/consensus/polybft/signer" + "github.com/0xPolygon/polygon-edge/consensus/polybft/wallet" + "github.com/0xPolygon/polygon-edge/types" + hcf "github.com/hashicorp/go-hclog" + "github.com/umbracle/ethgo" + "github.com/umbracle/ethgo/abi" +) + +const ( + eventsBufferSize = 10 + stateFileName = "consensusState.db" + uptimeLookbackSize = 2 // number of blocks to calculate uptime from the previous epoch +) + +var ( + // state sync metrics + // TODO: Nemanja - accommodate bridge metrics to Edge + // totalStateSyncsMeter = metrics.NewRegisteredMeter("consensus/bridge/stateSyncsTotal", nil) + + // errNotAValidator represents "node is not a validator" error message + errNotAValidator = errors.New("node is not a validator") + // errQuorumNotReached represents "quorum not reached for commitment message" error message + errQuorumNotReached = errors.New("quorum not reached for commitment message") +) + +// Transport is an abstraction of network layer +type Transport interface { + Gossip(message interface{}) +} + +// epochMetadata is the static info for epoch currently being processed +type epochMetadata struct { + // Number is the number of the epoch + Number uint64 + + // LastCheckpoint is the last epoch that was checkpointed, for now it is epoch-1. + LastCheckpoint uint64 + + // CheckpointProposer is the validator that has to send the checkpoint, assume it is static for now. + CheckpointProposer pbft.NodeID + + // Blocks is the list of blocks that we have to checkpoint in rootchain + Blocks []*types.Block + + // Validators is the set of validators for the epoch + Validators AccountSet + + // Commitment built in the current epoch + Commitment *Commitment +} + +// runtimeConfig is a struct that holds configuration data for given consensus runtime +type runtimeConfig struct { + PolyBFTConfig *PolyBFTConfig + DataDir string + Transport Transport + Key *wallet.Key + State *State + blockchain blockchainBackend + polybftBackend polybftBackend +} + +// consensusRuntime is a struct that provides consensus runtime features like epoch, state and event management +type consensusRuntime struct { + // config represents wrapper around required parameters which are received from the outside + config *runtimeConfig + + // state is reference to the struct which encapsulates bridge events persistence logic + state *State + + // eventTracker is a reference to the log event tracker + eventTracker *eventTracker + + // epoch is the metadata for the current epoch + epoch *epochMetadata + + // lock is a lock to access 'epoch' + lock sync.RWMutex + + // lastBuiltBlock is the header of the last processed block + lastBuiltBlock *types.Header + + // activeValidatorFlag indicates whether the given node is amongst currently active validator set + activeValidatorFlag uint32 + + logger hcf.Logger +} + +// newConsensusRuntime creates and starts a new consensus runtime instance with event tracking +func newConsensusRuntime(log hcf.Logger, config *runtimeConfig) (*consensusRuntime, error) { + runtime := &consensusRuntime{ + state: config.State, + config: config, + logger: log.Named("consensus_runtime"), + } + + if runtime.IsBridgeEnabled() { + err := runtime.startEventTracker() + if err != nil { + return nil, err + } + } + + return runtime, nil +} + +// getEpoch returns current epochMetadata in a thread-safe manner. +func (c *consensusRuntime) getEpoch() *epochMetadata { + c.lock.RLock() + defer c.lock.RUnlock() + + return c.epoch +} + +func (c *consensusRuntime) IsBridgeEnabled() bool { + return c.config.PolyBFTConfig.IsBridgeEnabled() +} + +// AddLog is an implementation of eventSubscription interface, +// and is called from the event tracker when an event is final on the rootchain +func (c *consensusRuntime) AddLog(eventLog *ethgo.Log) { + c.logger.Info( + "Add State sync event", + "block", eventLog.BlockNumber, + "hash", eventLog.TransactionHash, + "index", eventLog.LogIndex, + ) + + event, err := decodeEvent(eventLog) + if err != nil { + c.logger.Error("failed to decode state sync event", "hash", eventLog.TransactionHash, "err", err) + + return + } + + if err := c.state.insertStateSyncEvent(event); err != nil { + c.logger.Error("failed to insert state sync event", "hash", eventLog.TransactionHash, "err", err) + + return + } + // TODO: Nemanja + // update metrics + // totalStateSyncsMeter.Mark(1) + return // TODO: Delete this when metrics is established. This is added just to trick linter. +} + +// NotifyProposalInserted is an implementation of fsmNotify interface +func (c *consensusRuntime) NotifyProposalInserted(b *StateBlock) { + lastHeader := b.Block.Header + if c.isEndOfEpoch(lastHeader.Number) { + // reset the epoch. Internally it updates the parent block header. + if err := c.restartEpoch(lastHeader); err != nil { + c.logger.Error("failed to restart epoch after block inserted", "err", err) + } + } else { + // inside the epoch, update last built block header + c.lastBuiltBlock = lastHeader + } +} + +// FSM creates a new instance of fsm +func (c *consensusRuntime) FSM() (*fsm, error) { + // figure out the parent. At this point this peer has done its best to sync up + // to the head of their remote peers. + parent := c.lastBuiltBlock + epoch := c.getEpoch() + + if !epoch.Validators.ContainsNodeID(c.config.Key.NodeID()) { + return nil, errNotAValidator + } + + blockBuilder, err := c.config.blockchain.NewBlockBuilder(parent, types.Address(c.config.Key.Address())) + if err != nil { + return nil, err + } + + pendingBlockNumber := c.getPendingBlockNumber() + isEndOfSprint := c.isEndOfSprint(pendingBlockNumber) + isEndOfEpoch := c.isEndOfEpoch(pendingBlockNumber) + + ff := &fsm{ + config: c.config.PolyBFTConfig, + parent: parent, + backend: c.config.blockchain, + polybftBackend: c.config.polybftBackend, + blockBuilder: blockBuilder, + validators: newValidatorSet(types.BytesToAddress(parent.Miner), epoch.Validators), // TODO: Nemanja - check this + isEndOfEpoch: isEndOfEpoch, + isEndOfSprint: isEndOfSprint, + epoch: epoch.Number, + logger: c.logger.Named("fsm"), + } + + var systemState SystemState + + var nextStateSyncExecutionIdx uint64 + + if c.IsBridgeEnabled() { + systemState, err = c.getSystemState(c.lastBuiltBlock) + if err != nil { + return nil, err + } + + nextStateSyncExecutionIdx, err = systemState.GetNextExecutionIndex() + if err != nil { + return nil, err + } + + ff.stateSyncExecutionIndex = nextStateSyncExecutionIdx + } + + ff.postInsertHook = func() error { + if c.IsBridgeEnabled() { + if isEndOfEpoch && ff.commitmentToSaveOnRegister != nil { + if err := c.state.insertCommitmentMessage(ff.commitmentToSaveOnRegister); err != nil { + return err + } + + if err := c.buildBundles( + epoch, ff.commitmentToSaveOnRegister.Message, nextStateSyncExecutionIdx); err != nil { + return err + } + } + } + + c.NotifyProposalInserted(ff.block) + + return nil + } + + if c.IsBridgeEnabled() { + nextRegisteredCommitmentIndex, err := systemState.GetNextCommittedIndex() + if err != nil { + return nil, err + } + + if isEndOfEpoch { + commitment, err := c.getCommitmentToRegister(epoch, nextRegisteredCommitmentIndex) + if err != nil { + if errors.Is(err, ErrCommitmentNotBuilt) { + c.logger.Info("[FSM] Have no built commitment to register", + "epoch", epoch.Number, "from state sync index", nextRegisteredCommitmentIndex) + } else if errors.Is(err, errQuorumNotReached) { + c.logger.Info("[FSM] Not enough votes to register commitment", + "epoch", epoch.Number, "from state sync index", nextRegisteredCommitmentIndex) + } else { + return nil, err + } + } + + ff.proposerCommitmentToRegister = commitment + } + + if isEndOfSprint { + if err != nil { + return nil, err + } + + if err := c.state.cleanCommitments(nextStateSyncExecutionIdx); err != nil { + return nil, err + } + + nonExecutedCommitments, err := c.state.getNonExecutedCommitments(nextStateSyncExecutionIdx) + if err != nil { + return nil, err + } + + if len(nonExecutedCommitments) > 0 { + bundlesToExecute, err := c.state.getBundles(nextStateSyncExecutionIdx, maxBundlesPerSprint) + if err != nil { + return nil, err + } + + ff.commitmentsToVerifyBundles = nonExecutedCommitments + ff.bundleProofs = bundlesToExecute + } + } + } + + // TODO: Nemanja + // if isEndOfEpoch { + // uptimeCounter, err := c.calculateUptime(parent) + // if err != nil { + // return nil, err + // } + + // ff.uptimeCounter = uptimeCounter + // } + + c.logger.Info("[FSM built]", + "epoch", epoch.Number, + "endOfEpoch", isEndOfEpoch, + "endOfSprint", isEndOfSprint, + ) + + return ff, nil +} + +// restartEpoch resets the previously run epoch and moves to the next one +func (c *consensusRuntime) restartEpoch(header *types.Header) error { + c.lastBuiltBlock = header + + systemState, err := c.getSystemState(c.lastBuiltBlock) + if err != nil { + return err + } + + epochNumber, err := systemState.GetEpoch() + if err != nil { + return err + } + + lastEpoch := c.getEpoch() + if lastEpoch != nil { + // Epoch might be already in memory, if its the same number do nothing. + // Otherwise, reset the epoch metadata and restart the async services + if lastEpoch.Number == epochNumber { + return nil + } + } + + /* + // We will uncomment this once we have the clear PoC for the checkpoint + lastCheckpoint := uint64(0) + + // get the blocks that should be signed for this checkpoint period + blocks := []*types.Block{} + + epochSize := c.config.Config.PolyBFT.Epoch + for i := lastCheckpoint * epochSize; i < epoch*epochSize; i++ { + block := c.config.Blockchain.GetBlockByNumber(i) + if block == nil { + panic("block not found") + } else { + blocks = append(blocks, block) + } + } + */ + + validatorSet, err := c.config.polybftBackend.GetValidators(c.lastBuiltBlock.Number, nil) + if err != nil { + return err + } + + epoch := &epochMetadata{ + Number: epochNumber, + LastCheckpoint: 0, + Blocks: []*types.Block{}, + Validators: validatorSet, + } + + if err := c.state.cleanEpochsFromDB(); err != nil { + c.logger.Error("Could not clean previous epochs from db.", "err", err) + } + + if err := c.state.insertEpoch(epoch.Number); err != nil { + return fmt.Errorf("an error occurred while inserting new epoch in db. Reason: %w", err) + } + + // create commitment for state sync events + if c.IsBridgeEnabled() { + nextCommittedIndex, err := systemState.GetNextCommittedIndex() + if err != nil { + return err + } + + commitment, err := c.buildCommitment(epochNumber, nextCommittedIndex) + if err != nil { + return err + } + + epoch.Commitment = commitment + } + + c.lock.Lock() + c.epoch = epoch + c.lock.Unlock() + + err = c.runCheckpoint(epoch) + if err != nil { + return fmt.Errorf("could not run checkpoint:%w", err) + } + + return nil +} + +// buildCommitment builds a commitment message (if it is not already built in previous epoch) +// for state sync events starting from given index and saves the message in database +func (c *consensusRuntime) buildCommitment(epoch, fromIndex uint64) (*Commitment, error) { + // if it is not already built in the previous epoch + stateSyncEvents, err := c.state.getStateSyncEventsForCommitment(fromIndex, fromIndex+stateSyncMainBundleSize) + if err != nil { + if errors.Is(err, ErrNotEnoughStateSyncs) { + c.logger.Info("[buildCommitment] Not enough state syncs to build a commitment", + "epoch", epoch, "from state sync index", fromIndex) + // this is a valid case, there is not enough state syncs + return nil, nil + } + + return nil, err + } + + commitment, err := NewCommitment(epoch, stateSyncBundleSize, stateSyncEvents) + if err != nil { + return nil, err + } + + hash := commitment.Hash().Bytes() + + signature, err := c.config.Key.Sign(hash) + if err != nil { + return nil, fmt.Errorf("failed to sign commitment message. Error: %w", err) + } + + sig := &MessageSignature{ + From: c.config.Key.NodeID(), + Signature: signature, + } + + if _, err = c.state.insertMessageVote(epoch, hash, sig); err != nil { + return nil, fmt.Errorf("failed to insert signature for hash=%v to the state."+ + "Error: %v", hex.EncodeToString(hash), err) + } + + // gossip message + msg := &TransportMessage{ + Hash: hash, + Signature: signature, + NodeID: c.config.Key.NodeID(), + EpochNumber: epoch, + } + c.config.Transport.Gossip(msg) + + return commitment, nil +} + +// buildBundles builds bundles if there is a created commitment by the validator and inserts them into db +func (c *consensusRuntime) buildBundles(epoch *epochMetadata, commitmentMsg *CommitmentMessage, + stateSyncExecutionIndex uint64) error { + if epoch.Commitment == nil { + // its a valid case when we do not have a built commitment so we can not build any proofs + // we will be able to validate them though, since we have CommitmentMessageSigned taken from + // register commitment state transaction when its block was inserted + c.logger.Info("[buildProofs] No commitment built.") + + return nil + } + + bundleProofs := []*BundleProof{} + + // TO DO Nemanja - fix this with new merkle trie + + // startBundleIdx := commitmentMsg.GetBundleIdxFromStateSyncEventIdx(stateSyncExecutionIndex) + // for idx := startBundleIdx; idx < commitmentMsg.BundlesCount(); idx++ { + // p, err := epoch.Commitment.MerkleTrie.GenerateProof(uint(idx)) + // if err != nil { + // return err + // } + + // events, err := c.getStateSyncEventsForBundle(commitmentMsg.GetFirstStateSyncIndexFromBundleIndex(idx), + // commitmentMsg.BundleSize) + // if err != nil { + // return err + // } + + // bundleProofs = append(bundleProofs, + // &BundleProof{ + // Proof: p, + // StateSyncs: events, + // }) + // } + + return c.state.insertBundles(bundleProofs) +} + +// getAggSignatureForCommitmentMessage creates aggregated signatures for given commitment +// if it has a quorum of votes +func (c *consensusRuntime) getAggSignatureForCommitmentMessage(epoch *epochMetadata, + commitmentHash types.Hash) (Signature, error) { + validators := epoch.Validators + + nodeIDIndexMap := make(map[pbft.NodeID]int, validators.Len()) + for i, validator := range validators { + nodeIDIndexMap[pbft.NodeID(validator.Address.String())] = i + } + + // get all the votes from the database for this commitment + votes, err := c.state.getMessageVotes(epoch.Number, commitmentHash.Bytes()) + if err != nil { + return Signature{}, err + } + + var signatures bls.Signatures + + bitmap := bitmap.Bitmap{} + + for _, vote := range votes { + index, exists := nodeIDIndexMap[vote.From] + if !exists { + continue // don't count this vote, because it does not belong to validator + } + + signature, err := bls.UnmarshalSignature(vote.Signature) + if err != nil { + return Signature{}, err + } + + bitmap.Set(uint64(index)) + + signatures = append(signatures, signature) + } + + if len(signatures) < getQuorumSize(validators.Len()) { + return Signature{}, errQuorumNotReached + } + + aggregatedSignature, err := signatures.Aggregate().Marshal() + if err != nil { + return Signature{}, err + } + + result := Signature{ + AggregatedSignature: aggregatedSignature, + Bitmap: bitmap, + } + + return result, nil +} + +// getStateSyncEventsForBundle gets state sync events from database for the appropriate bundle +func (c *consensusRuntime) getStateSyncEventsForBundle(from, bundleSize uint64) ([]*StateSyncEvent, error) { + until := bundleSize + from + + return c.state.getStateSyncEventsForCommitment(from, until) +} + +// startEventTracker starts the event tracker that listens to state sync events +func (c *consensusRuntime) startEventTracker() error { + if c.eventTracker != nil { + return nil + } + + c.eventTracker = &eventTracker{ + config: c.config.PolyBFTConfig, + subscriber: c, + dataDir: c.config.DataDir, + logger: c.logger.Named("event_tracker"), + } + + if err := c.eventTracker.start(); err != nil { + return err + } + + return nil +} + +// deliverMessage receives the message vote from transport and inserts it in state db for given epoch. +// It returns indicator whether message is processed successfully and error object if any. +func (c *consensusRuntime) deliverMessage(msg *TransportMessage) (bool, error) { + epoch := c.getEpoch() + if epoch == nil || msg.EpochNumber < epoch.Number { + // Epoch metadata is undefined + // or received message for some of the older epochs. + return false, nil + } + + if !c.isActiveValidator() { + return false, fmt.Errorf("validator is not among the active validator set") + } + + // check just in case + if epoch.Validators == nil { + return false, fmt.Errorf("validators are not set for the current epoch") + } + + msgVote := &MessageSignature{ + From: msg.NodeID, + Signature: msg.Signature, + } + + if err := validateVote(msgVote, epoch); err != nil { + return false, err + } + + numSignatures, err := c.state.insertMessageVote(msg.EpochNumber, msg.Hash, msgVote) + if err != nil { + return false, fmt.Errorf("error inserting message vote: %w", err) + } + + c.logger.Info( + "deliver message", + "hash", hex.EncodeToString(msg.Hash), + "sender", msg.NodeID, + "signatures", numSignatures, + "quorum", getQuorumSize(len(epoch.Validators)), + ) + + return true, nil +} + +func (c *consensusRuntime) runCheckpoint(epoch *epochMetadata) error { + // TODO: Implement checkpoint + return nil +} + +// getLatestSprintBlockNumber returns latest sprint block number +func (c *consensusRuntime) getLatestSprintBlockNumber() uint64 { + lastBuiltBlockNumber := c.lastBuiltBlock.Number + + sprintSizeMod := lastBuiltBlockNumber % c.config.PolyBFTConfig.SprintSize + if sprintSizeMod == 0 { + return lastBuiltBlockNumber + } + + sprintBlockNumber := lastBuiltBlockNumber - sprintSizeMod + + return sprintBlockNumber +} + +// calculateUptime calculates uptime for blocks starting from the last built block in current epoch, +// and ending at the last block of previous epoch +func (c *consensusRuntime) calculateUptime(currentBlock *types.Header) (*UptimeCounter, error) { + epoch := c.getEpoch() + uptimeCounter := &UptimeCounter{validatorIndices: make(map[ethgo.Address]int)} + + if c.config.PolyBFTConfig.EpochSize < (uptimeLookbackSize + 1) { + // this means that epoch size must at least be 3 blocks, + // since we are not calculating uptime for lastBlockInEpoch and lastBlockInEpoch-1 + // they will be included in the uptime calculation of next epoch + return nil, errors.New("epoch size not large enough to calculate uptime") + } + + calculateUptimeForBlock := func(header *types.Header, validators AccountSet) error { + blockExtra, err := GetIbftExtra(header.ExtraData) + if err != nil { + return err + } + + signers, err := validators.GetFilteredValidators(blockExtra.Parent.Bitmap) + if err != nil { + return err + } + + for _, a := range signers.GetAddresses() { + uptimeCounter.AddUptime(ethgo.Address(a)) + } + + return nil + } + + firstBlockInEpoch := calculateFirstBlockOfPeriod(currentBlock.Number, c.config.PolyBFTConfig.EpochSize) + lastBlockInPreviousEpoch := firstBlockInEpoch - 1 + + blockHeader := currentBlock + validators := epoch.Validators + + for blockHeader.Number > firstBlockInEpoch { + if err := calculateUptimeForBlock(blockHeader, validators); err != nil { + return nil, err + } + + // blockHeader, ok := c.config.blockchain.GetHeaderByNumber(blockHeader.Number - 1) + _, _ = c.config.blockchain.GetHeaderByNumber(blockHeader.Number - 1) + } + + // since we need to calculate uptime for the last block of the previous epoch, + // we need to get the validators for the that epoch from the smart contract + // this is something that should probably be optimized + if lastBlockInPreviousEpoch > 0 { // do not calculate anything for genesis block + for i := 0; i < uptimeLookbackSize; i++ { + validators, err := c.config.polybftBackend.GetValidators(blockHeader.Number-2, nil) + if err != nil { + return nil, err + } + + if err := calculateUptimeForBlock(blockHeader, validators); err != nil { + return nil, err + } + + // blockHeader, ok := c.config.blockchain.GetHeaderByNumber(blockHeader.Number - 1) + _, _ = c.config.blockchain.GetHeaderByNumber(blockHeader.Number - 1) + } + } + + return uptimeCounter, nil +} + +// setIsActiveValidator updates the activeValidatorFlag field +func (c *consensusRuntime) setIsActiveValidator(isActiveValidator bool) { + if isActiveValidator { + atomic.StoreUint32(&c.activeValidatorFlag, 1) + } else { + atomic.StoreUint32(&c.activeValidatorFlag, 0) + } +} + +// isActiveValidator indicates if node is in validator set or not +func (c *consensusRuntime) isActiveValidator() bool { + return atomic.LoadUint32(&c.activeValidatorFlag) == 1 +} + +// getPendingBlockNumber returns block number currently being built (last built block number + 1) +func (c *consensusRuntime) getPendingBlockNumber() uint64 { + return c.lastBuiltBlock.Number + 1 +} + +// isEndOfEpoch checks if an end of an epoch is reached with the current block +func (c *consensusRuntime) isEndOfEpoch(blockNumber uint64) bool { + return isEndOfPeriod(blockNumber, c.config.PolyBFTConfig.EpochSize) +} + +// isEndOfSprint checks if an end of an sprint is reached with the current block +func (c *consensusRuntime) isEndOfSprint(blockNumber uint64) bool { + return isEndOfPeriod(blockNumber, c.config.PolyBFTConfig.SprintSize) +} + +// getSystemState builds SystemState instance for the most current block header +func (c *consensusRuntime) getSystemState(header *types.Header) (SystemState, error) { + provider, err := c.config.blockchain.GetStateProviderForBlock(header) + if err != nil { + return nil, err + } + + return c.config.blockchain.GetSystemState(c.config.PolyBFTConfig, provider), nil +} + +// isEndOfPeriod checks if an end of a period (either it be sprint or epoch) +// is reached with the current block (the parent block of the current fsm iteration) +func isEndOfPeriod(blockNumber, periodSize uint64) bool { + return blockNumber%periodSize == 0 +} + +// getQuorumSize returns result of division of given number by two, +// but rounded to next integer value (similar to math.Ceil function). +func getQuorumSize(validatorsCount int) int { + return (validatorsCount + 1) / 2 +} + +// calculateFirstBlockOfPeriod calculates the first block of a period +func calculateFirstBlockOfPeriod(currentBlockNumber, periodSize uint64) uint64 { + if currentBlockNumber <= periodSize { + return 1 // it's the first epoch + } + + switch currentBlockNumber % periodSize { + case 1: + return currentBlockNumber + case 0: + return currentBlockNumber - periodSize + 1 + default: + return currentBlockNumber - (currentBlockNumber % periodSize) + 1 + } +} + +// getEpochNumber returns epoch number for given blockNumber and epochSize. +// Epoch number is derived as a result of division of block number and epoch size. +// Since epoch number is 1-based (0 block represents special case zero epoch), +// we are incrementing result by one for non epoch-ending blocks. +func getEpochNumber(blockNumber, epochSize uint64) uint64 { + if isEndOfPeriod(blockNumber, epochSize) { + return blockNumber / epochSize + } + + return blockNumber/epochSize + 1 +} + +// getEndEpochBlockNumber returns block number which corresponds +// to the one at the beginning of the given epoch with regards to epochSize +func getEndEpochBlockNumber(epoch, epochSize uint64) uint64 { + return epoch * epochSize +} + +// getCommitmentToRegister gets commitments to register via state transaction +func (c *consensusRuntime) getCommitmentToRegister(epoch *epochMetadata, + registerCommitmentIndex uint64) (*CommitmentMessageSigned, error) { + if epoch.Commitment == nil { + // we did not build a commitment, so there is nothing to register + return nil, ErrCommitmentNotBuilt + } + + commitmentMessage := NewCommitmentMessage( + // epoch.Commitment.MerkleTrie.Trie.Hash(), + types.EmptyRootHash, // TO DO Nemanja - fix this with bridge + registerCommitmentIndex, + registerCommitmentIndex+stateSyncMainBundleSize-1, + epoch.Number, + stateSyncBundleSize) + + aggregatedSignature, err := c.getAggSignatureForCommitmentMessage(epoch, epoch.Commitment.Hash()) + if err != nil { + return nil, err + } + + return &CommitmentMessageSigned{ + Message: commitmentMessage, + AggSignature: aggregatedSignature, + }, nil +} + +// createStateTransaction creates a state transaction out of provided parameters. +// args parameter is ABI encoded against provided ABI method. +func createStateTransaction( + target types.Address, + abiMethod *abi.Method, + args interface{}, +) (*types.Transaction, error) { + abiEncodedArgs, err := abiMethod.Encode(args) + if err != nil { + return nil, fmt.Errorf("failed to encode arguments:%w", err) + } + + return createStateTransactionWithData(target, abiEncodedArgs, stateTransactionsGasLimit), nil +} + +// createStateTransactionWithData creates a state transaction +// with provided target address and inputData parameter which is ABI encoded byte array. +func createStateTransactionWithData(target types.Address, inputData []byte, gasLimit uint64) *types.Transaction { + // return types.NewTx( + // &types.StateTransaction{ + // To: target, + // Input: inputData, + // Gas: gasLimit, + // }) + // TODO: Nemanja - fix this with bridge + return nil +} + +func validateVote(vote *MessageSignature, epoch *epochMetadata) error { + // get senders address + senderAddress := types.StringToAddress(string(vote.From)) + if !epoch.Validators.ContainsAddress(senderAddress) { + return fmt.Errorf( + "message is received from sender %s, which is not in current validator set", + vote.From, + ) + } + + return nil +} diff --git a/consensus/polybft/event_tracker.go b/consensus/polybft/event_tracker.go new file mode 100644 index 0000000000..08b0bcb48c --- /dev/null +++ b/consensus/polybft/event_tracker.go @@ -0,0 +1,79 @@ +package polybft + +import ( + "context" + "path/filepath" + + hcf "github.com/hashicorp/go-hclog" + "github.com/umbracle/ethgo" + "github.com/umbracle/ethgo/jsonrpc" + "github.com/umbracle/ethgo/tracker" + boltdbStore "github.com/umbracle/ethgo/tracker/store/boltdb" +) + +type eventSubscription interface { + AddLog(log *ethgo.Log) +} + +type eventTracker struct { + dataDir string + config *PolyBFTConfig + subscriber eventSubscription + logger hcf.Logger +} + +func (e *eventTracker) start() error { + provider, err := jsonrpc.NewClient(e.config.Bridge.JSONRPCEndpoint) + if err != nil { + return err + } + + store, err := boltdbStore.New(filepath.Join(e.dataDir, "/deposit.db")) + + if err != nil { + return err + } + + e.logger.Info("Start tracking events", "bridge", e.config.Bridge.BridgeAddr) + + tt, err := tracker.NewTracker(provider.Eth(), + tracker.WithBatchSize(10), + tracker.WithStore(store), + tracker.WithFilter(&tracker.FilterConfig{ + Async: false, + Address: []ethgo.Address{ + ethgo.Address(e.config.Bridge.BridgeAddr), + }, + }), + ) + if err != nil { + return err + } + + go func() { + go func() { + if err := tt.Sync(context.Background()); err != nil { + e.logger.Error("Event tracker", "failed to sync", err) + } + }() + + go func() { + for { + select { + case evnt := <-tt.EventCh: + if len(evnt.Removed) != 0 { + panic("this will not happen anymore after tracker v2") + } + + for _, log := range evnt.Added { + e.subscriber.AddLog(log) + } + case <-tt.DoneCh: + e.logger.Info("Historical sync done") + } + } + }() + }() + + return nil +} diff --git a/consensus/polybft/extra.go b/consensus/polybft/extra.go new file mode 100644 index 0000000000..2ade7e53c3 --- /dev/null +++ b/consensus/polybft/extra.go @@ -0,0 +1,390 @@ +package polybft + +import ( + "fmt" + + "github.com/hashicorp/go-hclog" + + bls "github.com/0xPolygon/polygon-edge/consensus/polybft/signer" + + "github.com/0xPolygon/polygon-edge/consensus/polybft/bitmap" + "github.com/0xPolygon/polygon-edge/types" + "github.com/umbracle/ethgo" + "github.com/umbracle/fastrlp" +) + +const ( + // ExtraVanity represents a fixed number of extra-data bytes reserved for proposer vanity + ExtraVanity = 32 + + // ExtraSeal represents the fixed number of extra-data bytes reserved for proposer seal + ExtraSeal = 65 +) + +var ( + // PolyMixDigest represents a hash of "PolyBFT Mix" to identify whether the block is from PolyBFT consensus engine + PolyMixDigest = types.Hash(ethgo.HexToHash("adce6e5230abe012342a44e4e9b6d05997d6f015387ae0e59be924afc7ec70c1")) +) + +// Extra defines the structure of the extra field for Istanbul +type Extra struct { + Validators *ValidatorSetDelta + Seal []byte + Parent *Signature + Committed *Signature +} + +// MarshalRLPTo defines the marshal function wrapper for Extra +func (i *Extra) MarshalRLPTo(dst []byte) []byte { + ar := &fastrlp.Arena{} + + return i.MarshalRLPWith(ar).MarshalTo(dst) +} + +// MarshalRLPWith defines the marshal function implementation for Extra +func (i *Extra) MarshalRLPWith(ar *fastrlp.Arena) *fastrlp.Value { + vv := ar.NewArray() + + // Validators + if i.Validators == nil { + vv.Set(ar.NewNullArray()) + } else { + vv.Set(i.Validators.MarshalRLPWith(ar)) + } + + // Seal + if len(i.Seal) == 0 { + vv.Set(ar.NewNull()) + } else { + vv.Set(ar.NewBytes(i.Seal)) + } + + // ParentSeal + if i.Parent == nil { + vv.Set(ar.NewNullArray()) + } else { + vv.Set(i.Parent.MarshalRLPWith(ar)) + } + + // CommittedSeal + if i.Committed == nil { + vv.Set(ar.NewNullArray()) + } else { + vv.Set(i.Committed.MarshalRLPWith(ar)) + } + + return vv +} + +// UnmarshalRLP defines the unmarshal function wrapper for Extra +func (i *Extra) UnmarshalRLP(input []byte) error { + return fastrlp.UnmarshalRLP(input, i) +} + +// UnmarshalRLPWith defines the unmarshal implementation for Extra +func (i *Extra) UnmarshalRLPWith(v *fastrlp.Value) error { + elems, err := v.GetElems() + if err != nil { + return err + } + + if num := len(elems); num != 4 { + return fmt.Errorf("not enough elements to decode extra, expected 4 but found %d", num) + } + + // Validators + { + if elems[0].Elems() > 0 { + i.Validators = &ValidatorSetDelta{} + if err := i.Validators.UnmarshalRLPWith(elems[0]); err != nil { + return err + } + } + } + + // Seal + { + if elems[1].Len() > 0 { + if i.Seal, err = elems[1].GetBytes(i.Seal); err != nil { + return err + } + } + } + + // Parent + { + if elems[2].Elems() > 0 { + i.Parent = &Signature{} + if err := i.Parent.UnmarshalRLPWith(elems[2]); err != nil { + return err + } + } + } + + // Committed + { + if elems[3].Elems() > 0 { + i.Committed = &Signature{} + if err := i.Committed.UnmarshalRLPWith(elems[3]); err != nil { + return err + } + } + } + + return nil +} + +// createValidatorSetDelta calculates ValidatorSetDelta based on the provided old and new validator sets +func createValidatorSetDelta(log hclog.Logger, oldValidatorSet, newValidatorSet AccountSet) *ValidatorSetDelta { + var addedValidators AccountSet + + oldValidatorSetMap := make(map[types.Address]*ValidatorAccount) + removedValidators := map[types.Address]int{} + + for i, validator := range oldValidatorSet { + if (validator.Address != types.Address{}) { + removedValidators[validator.Address] = i + oldValidatorSetMap[validator.Address] = validator + } + } + + for _, newValidator := range newValidatorSet { + // Check if the validator is among both old and new validator set + oldValidator, ok := oldValidatorSetMap[newValidator.Address] + if ok { + if !oldValidator.Equals(newValidator) { + log.Error( + fmt.Sprintf( + "validator '%s' found in both old and new validator set, but its BLS keys differ", + newValidator.Address.String(), + ), + ) + } + + // If it is, then discard it from removed validators... + delete(removedValidators, newValidator.Address) + } else { + // ...otherwise it is added + addedValidators = append(addedValidators, newValidator) + } + } + + removedValsBitmap := bitmap.Bitmap{} + for _, i := range removedValidators { + removedValsBitmap.Set(uint64(i)) + } + + return &ValidatorSetDelta{ + Added: addedValidators, + Removed: removedValsBitmap, + } +} + +// ValidatorSetDelta holds information about added and removed validators compared to the previous epoch +type ValidatorSetDelta struct { + // Added is the list of new validators for the epoch + Added AccountSet + // Removed is a bitmap of the validators removed from the set + Removed bitmap.Bitmap +} + +// MarshalRLPWith marshals ValidatorSetDelta to RLP format +func (d *ValidatorSetDelta) MarshalRLPWith(ar *fastrlp.Arena) *fastrlp.Value { + vv := ar.NewArray() + validatorsRaw := ar.NewArray() + + for _, validatorAccount := range d.Added { + validatorsRaw.Set(validatorAccount.MarshalRLPWith(ar)) + } + + vv.Set(validatorsRaw) // validators + vv.Set(ar.NewCopyBytes(d.Removed)) // bitmap + + return vv +} + +// UnmarshalRLPWith unmarshals ValidatorSetDelta from RLP format +func (d *ValidatorSetDelta) UnmarshalRLPWith(v *fastrlp.Value) error { + elems, err := v.GetElems() + if err != nil { + return err + } + + if len(elems) == 0 { + return nil + } else if num := len(elems); num != 2 { + return fmt.Errorf("incorrect elements count to decode validator set delta, expected 2 but found %d", num) + } + + // Validators (added) + { + validatorsRaw, err := elems[0].GetElems() + if err != nil { + return fmt.Errorf("array expected for added validators") + } + + if len(validatorsRaw) != 0 { + d.Added = make(AccountSet, len(validatorsRaw)) + + for i, validatorRaw := range validatorsRaw { + acc := &ValidatorAccount{} + if err = acc.UnmarshalRLPWith(validatorRaw); err != nil { + return err + } + + d.Added[i] = acc + } + } + } + + // Bitmap (removed) + { + dst, err := elems[1].GetBytes(nil) + if err != nil { + return err + } + + d.Removed = bitmap.Bitmap(dst) + } + + return nil +} + +// IsEmpty returns indication whether delta is empty (namely added and removed slices are empty) +func (d *ValidatorSetDelta) IsEmpty() bool { + return len(d.Added) == 0 && d.Removed.Len() == 0 +} + +// Copy creates deep copy of ValidatorSetDelta +func (d *ValidatorSetDelta) Copy() *ValidatorSetDelta { + added := d.Added.Copy() + removed := make([]byte, len(d.Removed)) + copy(removed, d.Removed) + + return &ValidatorSetDelta{Added: added, Removed: removed} +} + +// fmt.Stringer interface implementation +func (d *ValidatorSetDelta) String() string { + return fmt.Sprintf("Added %v Removed %v", d.Added, d.Removed) +} + +// Signature represents aggregated signatures of signers accompanied with a bitmap +// (in order to be able to determine identities of each signer) +type Signature struct { + AggregatedSignature []byte + Bitmap []byte +} + +// MarshalRLPWith marshals Signature object into RLP format +func (s *Signature) MarshalRLPWith(ar *fastrlp.Arena) *fastrlp.Value { + committed := ar.NewArray() + if s.AggregatedSignature == nil { + committed.Set(ar.NewNull()) + } else { + committed.Set(ar.NewBytes(s.AggregatedSignature)) + } + + if s.Bitmap == nil { + committed.Set(ar.NewNull()) + } else { + committed.Set(ar.NewBytes(s.Bitmap)) + } + + return committed +} + +// UnmarshalRLPWith unmarshals Signature object from the RLP format +func (s *Signature) UnmarshalRLPWith(v *fastrlp.Value) error { + vals, err := v.GetElems() + if err != nil { + return fmt.Errorf("array type expected for signature struct") + } + + // there should be exactly two elements (aggregated signature and bitmap) + if len(vals) != 2 { + return fmt.Errorf("invalid rlp values") + } + + s.AggregatedSignature, err = vals[0].GetBytes(nil) + if err != nil { + return err + } + + s.Bitmap, err = vals[1].GetBytes(nil) + if err != nil { + return err + } + + return nil +} + +// VerifyCommittedFields is checking for consensus proof in the header +func (s *Signature) VerifyCommittedFields(validatorSet AccountSet, hash types.Hash) error { + filtered, err := validatorSet.GetFilteredValidators(s.Bitmap) + if err != nil { + return err + } + + if len(filtered) < getQuorumSize(validatorSet.Len()) { + return fmt.Errorf("quorum not reached") + } + + rawMsg := hash[:] + blsPublicKeys := make([]*bls.PublicKey, len(filtered)) + + for i, validator := range filtered { + blsPublicKeys[i] = validator.BlsKey + } + + // TODO: refactor AggregatedSignature + aggs, err := bls.UnmarshalSignature(s.AggregatedSignature) + if err != nil { + return err + } + + isOk := aggs.VerifyAggregated(blsPublicKeys, rawMsg) + if !isOk { + return fmt.Errorf("could not verify signature") + } + + return nil +} + +// GetIbftExtraClean returns unmarshaled extra field from the passed in header, +// but without signatures for the given header (it only includes signatures for the parent block) +func GetIbftExtraClean(extraB []byte) ([]byte, error) { + extra, err := GetIbftExtra(extraB) + if err != nil { + return nil, err + } + + ibftExtra := &Extra{ + Parent: extra.Parent, + Validators: extra.Validators, + Seal: []byte{}, + Committed: &Signature{}, + } + + return ibftExtra.MarshalRLPTo(nil), nil +} + +// GetIbftExtra returns the istanbul extra data field from the passed in header +func GetIbftExtra(extraB []byte) (*Extra, error) { + if len(extraB) < ExtraVanity { + return nil, fmt.Errorf("wrong extra size: %d", len(extraB)) + } + + data := extraB[ExtraVanity:] + extra := &Extra{} + + if err := extra.UnmarshalRLP(data); err != nil { + return nil, err + } + + if extra.Validators == nil { + extra.Validators = &ValidatorSetDelta{} + } + + return extra, nil +} diff --git a/consensus/polybft/extra_test.go b/consensus/polybft/extra_test.go new file mode 100644 index 0000000000..aa96ea087e --- /dev/null +++ b/consensus/polybft/extra_test.go @@ -0,0 +1,484 @@ +package polybft + +import ( + "crypto/rand" + mrand "math/rand" + "testing" + + "github.com/0xPolygon/polygon-edge/chain" + "github.com/0xPolygon/polygon-edge/consensus/polybft/bitmap" + bls "github.com/0xPolygon/polygon-edge/consensus/polybft/signer" + "github.com/0xPolygon/polygon-edge/consensus/polybft/wallet" + "github.com/0xPolygon/polygon-edge/types" + "github.com/hashicorp/go-hclog" + + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "github.com/umbracle/fastrlp" +) + +func TestExtra_Encoding(t *testing.T) { + parentStr := []byte("Here is the parent signature") + committedStr := []byte("Here is the committed signature") + bitmapStr := []byte("Here are the bitmap bytes") + + addedValidators := newTestValidatorsWithAliases([]string{"A", "B", "C"}).getPublicIdentities() + + removedValidators := bitmap.Bitmap{} + removedValidators.Set(2) + + // different extra data for marshall/unmarshall + var cases = []struct { + extra *Extra + }{ + { + &Extra{}, + }, + { + &Extra{ + Validators: &ValidatorSetDelta{}, + Parent: &Signature{}, + Committed: &Signature{}, + }, + }, + { + &Extra{ + Validators: &ValidatorSetDelta{}, + Seal: []byte{3, 4}, + }, + }, + { + &Extra{ + Validators: &ValidatorSetDelta{ + Added: addedValidators, + }, + Parent: &Signature{}, + Committed: &Signature{}, + }, + }, + { + &Extra{ + Validators: &ValidatorSetDelta{ + Removed: removedValidators, + }, + Parent: &Signature{AggregatedSignature: parentStr, Bitmap: bitmapStr}, + Committed: &Signature{}, + }, + }, + { + &Extra{ + Validators: &ValidatorSetDelta{ + Added: addedValidators, + Removed: removedValidators, + }, + Parent: &Signature{}, + Committed: &Signature{AggregatedSignature: committedStr, Bitmap: bitmapStr}, + }, + }, + { + &Extra{ + Parent: &Signature{AggregatedSignature: parentStr, Bitmap: bitmapStr}, + Committed: &Signature{AggregatedSignature: committedStr, Bitmap: bitmapStr}, + }, + }, + } + + for _, c := range cases { + data := c.extra.MarshalRLPTo(nil) + + extra := &Extra{} + assert.NoError(t, extra.UnmarshalRLP(data)) + assert.Equal(t, c.extra, extra) + } +} + +func TestExtra_UnmarshalRLPWith_NegativeCases(t *testing.T) { + t.Run("Incorrect RLP marshalled data type", func(t *testing.T) { + extra := &Extra{} + ar := &fastrlp.Arena{} + require.Error(t, extra.UnmarshalRLPWith(ar.NewBool(false))) + }) + + t.Run("Incorrect count of RLP marshalled array elements", func(t *testing.T) { + extra := &Extra{} + ar := &fastrlp.Arena{} + require.ErrorContains(t, extra.UnmarshalRLPWith(ar.NewArray()), "not enough elements to decode extra, expected 4 but found 0") + }) + + t.Run("Incorrect ValidatorSetDelta marshalled", func(t *testing.T) { + extra := &Extra{} + ar := &fastrlp.Arena{} + extraMarshalled := ar.NewArray() + deltaMarshalled := ar.NewArray() + deltaMarshalled.Set(ar.NewBytes([]byte{0x73})) + extraMarshalled.Set(deltaMarshalled) // ValidatorSetDelta + extraMarshalled.Set(ar.NewBytes([]byte{})) // Seal + extraMarshalled.Set(ar.NewBytes([]byte{})) // Parent + extraMarshalled.Set(ar.NewBytes([]byte{})) // Committed + require.Error(t, extra.UnmarshalRLPWith(extraMarshalled)) + }) + + t.Run("Incorrect Seal marshalled", func(t *testing.T) { + extra := &Extra{} + ar := &fastrlp.Arena{} + extraMarshalled := ar.NewArray() + deltaMarshalled := new(ValidatorSetDelta).MarshalRLPWith(ar) + extraMarshalled.Set(deltaMarshalled) // ValidatorSetDelta + extraMarshalled.Set(ar.NewNull()) // Seal + extraMarshalled.Set(ar.NewBytes([]byte{})) // Parent + extraMarshalled.Set(ar.NewBytes([]byte{})) // Committed + require.Error(t, extra.UnmarshalRLPWith(extraMarshalled)) + }) + + t.Run("Incorrect Parent signatures marshalled", func(t *testing.T) { + extra := &Extra{} + ar := &fastrlp.Arena{} + extraMarshalled := ar.NewArray() + deltaMarshalled := new(ValidatorSetDelta).MarshalRLPWith(ar) + extraMarshalled.Set(deltaMarshalled) // ValidatorSetDelta + extraMarshalled.Set(ar.NewBytes([]byte{})) // Seal + // Parent + parentArr := ar.NewArray() + parentArr.Set(ar.NewBytes([]byte{})) + extraMarshalled.Set(parentArr) + extraMarshalled.Set(ar.NewBytes([]byte{})) // Committed + require.Error(t, extra.UnmarshalRLPWith(extraMarshalled)) + }) + + t.Run("Incorrect Committed signatures marshalled", func(t *testing.T) { + extra := &Extra{} + ar := &fastrlp.Arena{} + extraMarshalled := ar.NewArray() + deltaMarshalled := new(ValidatorSetDelta).MarshalRLPWith(ar) + extraMarshalled.Set(deltaMarshalled) // ValidatorSetDelta + extraMarshalled.Set(ar.NewBytes([]byte{})) // Seal + + // Parent + key := wallet.GenerateAccount() + parentSignature := createSignature(t, []*wallet.Account{key}, types.BytesToHash([]byte("This is test hash"))) + extraMarshalled.Set(parentSignature.MarshalRLPWith(ar)) + + // Committed + committedArr := ar.NewArray() + committedArr.Set(ar.NewBytes([]byte{})) + extraMarshalled.Set(committedArr) + require.Error(t, extra.UnmarshalRLPWith(extraMarshalled)) + }) +} + +func TestSignature_VerifyCommittedFields(t *testing.T) { + t.Run("Valid signatures", func(t *testing.T) { + numValidators := 100 + vals := newTestValidators(numValidators) + msgHash := types.Hash{0x1} + + ac := vals.getPublicIdentities() + + var signatures bls.Signatures + bitmap := bitmap.Bitmap{} + + for i, val := range vals.getValidators() { + bitmap.Set(uint64(i)) + + tempSign, err := val.account.Bls.Sign(msgHash[:]) + require.NoError(t, err) + + signatures = append(signatures, tempSign) + aggs, err := signatures.Aggregate().Marshal() + assert.NoError(t, err) + + s := &Signature{ + AggregatedSignature: aggs, + Bitmap: bitmap, + } + + err = s.VerifyCommittedFields(ac, msgHash) + if i+1 < getQuorumSize(numValidators) { + assert.ErrorContains(t, err, "quorum not reached", "failed for %d", i) + } else { + assert.NoError(t, err) + } + } + }) + + t.Run("Invalid bitmap provided", func(t *testing.T) { + validatorSet := newTestValidators(3).getPublicIdentities() + bmp := bitmap.Bitmap{} + + // Make bitmap invalid, by setting some flag larger than length of validator set to 1 + bmp.Set(uint64(len(validatorSet) + 1)) + s := &Signature{Bitmap: bmp} + + err := s.VerifyCommittedFields(validatorSet, types.Hash{0x1}) + require.Error(t, err) + }) +} + +func TestSignature_UnmarshalRLPWith_NegativeCases(t *testing.T) { + t.Run("Incorrect RLP marshalled data type", func(t *testing.T) { + ar := &fastrlp.Arena{} + signature := Signature{} + require.ErrorContains(t, signature.UnmarshalRLPWith(ar.NewNull()), "array type expected for signature struct") + }) + + t.Run("Incorrect AggregatedSignature field data type", func(t *testing.T) { + ar := &fastrlp.Arena{} + signature := Signature{} + signatureMarshalled := ar.NewArray() + signatureMarshalled.Set(ar.NewNull()) + signatureMarshalled.Set(ar.NewNull()) + require.ErrorContains(t, signature.UnmarshalRLPWith(signatureMarshalled), "value is not of type bytes") + }) + + t.Run("Incorrect Bitmap field data type", func(t *testing.T) { + ar := &fastrlp.Arena{} + signature := Signature{} + signatureMarshalled := ar.NewArray() + signatureMarshalled.Set(ar.NewBytes([]byte{0x5, 0x90})) + signatureMarshalled.Set(ar.NewNull()) + require.ErrorContains(t, signature.UnmarshalRLPWith(signatureMarshalled), "value is not of type bytes") + }) +} + +func TestExtra_VerifyCommittedFieldsRandom(t *testing.T) { + numValidators := 100 + vals := newTestValidators(numValidators) + msgHash := types.Hash{0x1} + + var signature bls.Signatures + + bitmap := bitmap.Bitmap{} + valIndxsRnd := mrand.Perm(numValidators)[:numValidators*2/3+1] + + accounts := vals.getValidators() + + for _, index := range valIndxsRnd { + bitmap.Set(uint64(index)) + + tempSign, err := accounts[index].account.Bls.Sign(msgHash[:]) + require.NoError(t, err) + + signature = append(signature, tempSign) + } + + aggs, err := signature.Aggregate().Marshal() + require.NoError(t, err) + + s := &Signature{ + AggregatedSignature: aggs, + Bitmap: bitmap, + } + + err = s.VerifyCommittedFields(vals.getPublicIdentities(), msgHash) + assert.NoError(t, err) +} + +func TestExtra_CreateValidatorSetDelta_Cases(t *testing.T) { + cases := []struct { + name string + oldSet []string + newSet []string + added []string + removed []uint64 + }{ + { + "Simple", + []string{"A", "B", "C", "E", "F"}, + []string{"B", "E", "H"}, + []string{"H"}, + []uint64{0, 2, 4}, + }, + } + + for _, c := range cases { + t.Run(c.name, func(t *testing.T) { + vals := newTestValidatorsWithAliases([]string{}) + + for _, name := range c.oldSet { + vals.create(name) + } + for _, name := range c.newSet { + vals.create(name) + } + + oldValidatorSet := vals.getPublicIdentities(c.oldSet...) + newValidatorSet := vals.getPublicIdentities(c.newSet...) + + delta := createValidatorSetDelta(hclog.NewNullLogger(), oldValidatorSet, newValidatorSet) + + // added items + assert.Len(t, delta.Added, len(c.added)) + for index, item := range c.added { + assert.Equal(t, delta.Added[index].Address, vals.getValidator(item).Address()) + } + + // removed items + for _, i := range c.removed { + assert.True(t, delta.Removed.IsSet(i)) + } + }) + } +} + +func TestExtra_CreateValidatorSetDelta_BlsDiffer(t *testing.T) { + vals := newTestValidatorsWithAliases([]string{"A", "B", "C", "D", "E", "F"}) + + oldValidatorSet := vals.getPublicIdentities("A", "B", "C", "D") + + // change the public bls key of 'B' + newValidatorSet := vals.getPublicIdentities("B", "E", "F") + privateKey, err := bls.GenerateBlsKey() + require.NoError(t, err) + + newValidatorSet[0].BlsKey = privateKey.PublicKey() + + delta := createValidatorSetDelta(hclog.NewNullLogger(), oldValidatorSet, newValidatorSet) + assert.Len(t, delta.Added, 2) +} + +func TestExtra_InitGenesisValidatorsDelta(t *testing.T) { + t.Run("Happy path", func(t *testing.T) { + const validatorsCount = 7 + vals := newTestValidators(validatorsCount) + + polyBftConfig := PolyBFTConfig{InitialValidatorSet: vals.getParamValidators()} + + delta := &ValidatorSetDelta{ + Added: make(AccountSet, validatorsCount), + Removed: bitmap.Bitmap{}, + } + + var i int + for _, validator := range vals.validators { + delta.Added[i] = &ValidatorAccount{ + Address: types.Address(validator.account.Ecdsa.Address()), + BlsKey: validator.account.Bls.PublicKey(), + } + i++ + } + + extra := Extra{Validators: delta} + + genesis := &chain.Genesis{ + Config: &chain.Params{Engine: map[string]interface{}{ + "polybft": polyBftConfig, + }}, + ExtraData: append(make([]byte, ExtraVanity), extra.MarshalRLPTo(nil)...), + } + + genesisExtra, err := GetIbftExtra(genesis.ExtraData) + assert.NoError(t, err) + assert.Len(t, genesisExtra.Validators.Added, validatorsCount) + assert.Empty(t, genesisExtra.Validators.Removed) + }) + + t.Run("Invalid Extra data", func(t *testing.T) { + validators := newTestValidators(5) + polyBftConfig := PolyBFTConfig{InitialValidatorSet: validators.getParamValidators()} + + genesis := &chain.Genesis{ + Config: &chain.Params{Engine: map[string]interface{}{ + "polybft": polyBftConfig, + }}, + ExtraData: append(make([]byte, ExtraVanity), []byte{0x2, 0x3}...), + } + + _, err := GetIbftExtra(genesis.ExtraData) + + require.Error(t, err) + }) +} + +func TestValidatorSetDelta_Copy(t *testing.T) { + const ( + originalValidatorsCount = 10 + addedValidatorsCount = 2 + ) + + oldValidatorSet := newTestValidators(originalValidatorsCount).getPublicIdentities() + newValidatorSet := oldValidatorSet[:len(oldValidatorSet)-2] + originalDelta := createValidatorSetDelta(hclog.NewNullLogger(), oldValidatorSet, newValidatorSet) + require.NotNil(t, originalDelta) + require.Empty(t, originalDelta.Added) + + copiedDelta := originalDelta.Copy() + require.NotNil(t, copiedDelta) + require.NotSame(t, originalDelta, copiedDelta) + require.NotEqual(t, originalDelta, copiedDelta) + require.Empty(t, copiedDelta.Added) + require.Equal(t, copiedDelta.Removed.Len(), originalDelta.Removed.Len()) + + newValidators := newTestValidators(addedValidatorsCount).getPublicIdentities() + copiedDelta.Added = append(copiedDelta.Added, newValidators...) + require.Empty(t, originalDelta.Added) + require.Len(t, copiedDelta.Added, addedValidatorsCount) + require.Equal(t, copiedDelta.Removed.Len(), originalDelta.Removed.Len()) +} + +func TestValidatorSetDelta_UnmarshalRLPWith_NegativeCases(t *testing.T) { + t.Run("Incorrect RLP value type provided", func(t *testing.T) { + ar := &fastrlp.Arena{} + delta := &ValidatorSetDelta{} + require.ErrorContains(t, delta.UnmarshalRLPWith(ar.NewNull()), "value is not of type array") + }) + + t.Run("Empty RLP array provided", func(t *testing.T) { + ar := &fastrlp.Arena{} + delta := &ValidatorSetDelta{} + require.NoError(t, delta.UnmarshalRLPWith(ar.NewArray())) + }) + + t.Run("Incorrect RLP array size", func(t *testing.T) { + ar := &fastrlp.Arena{} + deltaMarshalled := ar.NewArray() + deltaMarshalled.Set(ar.NewBytes([]byte{0x59})) + deltaMarshalled.Set(ar.NewBytes([]byte{0x33})) + deltaMarshalled.Set(ar.NewBytes([]byte{0x26})) + delta := &ValidatorSetDelta{} + require.ErrorContains(t, delta.UnmarshalRLPWith(deltaMarshalled), "incorrect elements count to decode validator set delta, expected 2 but found 3") + }) + + t.Run("Incorrect RLP value type for Added field", func(t *testing.T) { + ar := &fastrlp.Arena{} + deltaMarshalled := ar.NewArray() + deltaMarshalled.Set(ar.NewBytes([]byte{0x59})) + deltaMarshalled.Set(ar.NewBytes([]byte{0x33})) + delta := &ValidatorSetDelta{} + require.ErrorContains(t, delta.UnmarshalRLPWith(deltaMarshalled), "array expected for added validators") + }) + + t.Run("Incorrect RLP value type for ValidatorAccount in Added field", func(t *testing.T) { + ar := &fastrlp.Arena{} + deltaMarshalled := ar.NewArray() + addedArray := ar.NewArray() + addedArray.Set(ar.NewNull()) + deltaMarshalled.Set(addedArray) + deltaMarshalled.Set(ar.NewNull()) + delta := &ValidatorSetDelta{} + require.ErrorContains(t, delta.UnmarshalRLPWith(deltaMarshalled), "value is not of type array") + }) + + t.Run("Incorrect RLP value type for Removed field", func(t *testing.T) { + ar := &fastrlp.Arena{} + deltaMarshalled := ar.NewArray() + addedValidators := newTestValidators(3).getPublicIdentities() + addedArray := ar.NewArray() + for _, validator := range addedValidators { + addedArray.Set(validator.MarshalRLPWith(ar)) + } + deltaMarshalled.Set(addedArray) + deltaMarshalled.Set(ar.NewNull()) + delta := &ValidatorSetDelta{} + require.ErrorContains(t, delta.UnmarshalRLPWith(deltaMarshalled), "value is not of type bytes") + }) +} + +func Test_GetIbftExtraClean_Fail(t *testing.T) { + randomBytes := [ExtraVanity]byte{} + _, err := rand.Read(randomBytes[:]) + require.NoError(t, err) + + extra, err := GetIbftExtraClean(append(randomBytes[:], []byte{0x12, 0x6}...)) + require.Error(t, err) + require.Nil(t, extra) +} diff --git a/consensus/polybft/fsm.go b/consensus/polybft/fsm.go new file mode 100644 index 0000000000..1686065c05 --- /dev/null +++ b/consensus/polybft/fsm.go @@ -0,0 +1,558 @@ +package polybft + +import ( + "errors" + "fmt" + "time" + + "github.com/0xPolygon/pbft-consensus" + "github.com/0xPolygon/polygon-edge/consensus/polybft/bitmap" + bls "github.com/0xPolygon/polygon-edge/consensus/polybft/signer" + "github.com/0xPolygon/polygon-edge/helper/hex" + "github.com/0xPolygon/polygon-edge/state" + "github.com/0xPolygon/polygon-edge/types" + hcf "github.com/hashicorp/go-hclog" + "github.com/umbracle/ethgo" +) + +var _ pbft.Backend = &fsm{} + +type blockBuilder interface { + Reset() + // CommitTransaction(tx *types.Transaction) error + // Fill(ctx context.Context) error + Build(func(h *types.Header)) (*StateBlock, error) + GetState() *state.Transition +} + +const ( + stateTransactionsGasLimit = 1000000 // some arbitrary default gas limit for state transactions + maxBundlesPerSprint = 50 +) + +type fsm struct { + // PolyBFT consensus protocol configuration + config *PolyBFTConfig + + // parent block header + parent *types.Header + + // backend implements methods for retrieving data from block chain + backend blockchainBackend + + // polybftBackend implements methods needed from the polybft + polybftBackend polybftBackend + + // validators is the list of pbft validators for this round + validators ValidatorSet + + // blockBuilder is the block builder for proposers + blockBuilder blockBuilder + + // block is the current block being process in this round. + // It should be populated after the Accept state in pbft-consensus. + block *StateBlock + + // proposal is the current proposal being processed + proposal *pbft.Proposal + + // postInsertHook represents custom handler which is executed once fsm.Insert is invoked, + // meaning that current block is inserted successfully + postInsertHook func() error + + // uptimeCounter holds info about number of times validators sealed a block (only present if isEndOfEpoch is true) + uptimeCounter *UptimeCounter + + // isEndOfEpoch indicates if epoch reached its end + isEndOfEpoch bool + + // isEndOfSprint indicates if sprint reached its end + isEndOfSprint bool + + // current epoch + epoch uint64 + + // proposerCommitmentToRegister is a commitment that is registered via state transaction by proposer + proposerCommitmentToRegister *CommitmentMessageSigned + + // commitmentToSaveOnRegister is a commitment that is verified on register and needs to be saved in db + commitmentToSaveOnRegister *CommitmentMessageSigned + + // bundleProofs is an array of bundles to be executed on end of sprint + bundleProofs []*BundleProof + + // commitmentsToVerifyBundles is an array of commitment messages that were not executed yet, + // but are used to verify any bundles if they are included in state transactions + commitmentsToVerifyBundles []*CommitmentMessageSigned + + // stateSyncExecutionIndex is the next state sync execution index in smart contract + stateSyncExecutionIndex uint64 + + logger hcf.Logger // The logger object +} + +func (f *fsm) Init(info *pbft.RoundInfo) { + f.blockBuilder.Reset() + f.commitmentToSaveOnRegister = nil +} + +// BuildProposal builds a proposal for the current round (used if proposer) +func (f *fsm) BuildProposal() (*pbft.Proposal, error) { + parent := f.parent + + extraParent, err := GetIbftExtra(parent.ExtraData) + if err != nil { + return nil, err + } + + // TODO: we will need to revisit once slashing is implemented + extra := &Extra{Parent: extraParent.Committed} + + if f.isEndOfEpoch { + // TODO: Nemanja - no transactions for now + // tx, err := f.createValidatorsUptimeTx() + // if err != nil { + // return nil, err + // } + // if err := f.blockBuilder.CommitTransaction(tx); err != nil { + // return nil, fmt.Errorf("failed to commit validators uptime transaction: %v", err) + // } + validatorsDelta, err := f.getValidatorSetDelta(f.blockBuilder.GetState()) + if err != nil { + return nil, err + } + + extra.Validators = validatorsDelta + f.logger.Trace("[FSM Build Proposal]", "Validators Delta", validatorsDelta) + } + + if f.config.IsBridgeEnabled() { + // TODO: Nemanja - no transactions for now + // for _, tx := range f.stateTransactions() { + // if err := f.blockBuilder.CommitTransaction(tx); err != nil { + // return nil, fmt.Errorf("failed to commit state transaction. Error: %v", err) + // } + // } + } + + // set the timestamp + parentTime := time.Unix(int64(parent.Timestamp), 0) + headerTime := parentTime.Add(f.config.BlockTime) + + if headerTime.Before(time.Now()) { + headerTime = time.Now() + } + + // fill the block with transactions + now := time.Now() + + // TODO: Nemanja - skip transactions + // if err := f.blockBuilder.Fill(context.Background()); err != nil { + // return nil, err + // } + + f.logger.Debug("Fill block", "time", time.Since(now)) + + stateBlock, err := f.blockBuilder.Build(func(h *types.Header) { + h.Timestamp = uint64(headerTime.Unix()) + h.ExtraData = append(make([]byte, 32), extra.MarshalRLPTo(nil)...) + h.MixHash = PolyMixDigest + }) + + if err != nil { + return nil, err + } + + f.block = stateBlock + + proposal := &pbft.Proposal{ + Time: headerTime, + Data: stateBlock.Block.MarshalRLP(), + Hash: f.block.Block.Hash().Bytes(), + } + f.proposal = proposal + f.logger.Debug("[FSM Build Proposal]", "Proposal hash", hex.EncodeToHex(proposal.Hash)) + + return proposal, nil +} + +func (f *fsm) stateTransactions() []*types.Transaction { + var txns []*types.Transaction + + if f.isEndOfEpoch { + if f.proposerCommitmentToRegister != nil { + // add register commitment transaction + inputData, err := f.proposerCommitmentToRegister.EncodeAbi() + if err != nil { + f.logger.Error("StateTransactions failed to encode input data for state sync commitment registration", "Error", err) + + return nil + } + + txns = append(txns, + createStateTransactionWithData(f.config.SidechainBridgeAddr, inputData, stateTransactionsGasLimit)) + + // since proposer does not execute Validate (when we see the commitment to register in state transactions) + // we need to set commitment to save so that the proposer also saves its commitment that he registered + f.commitmentToSaveOnRegister = f.proposerCommitmentToRegister + } + } + + if f.isEndOfSprint { + for _, bundle := range f.bundleProofs { + inputData, err := bundle.EncodeAbi() + if err != nil { + f.logger.Error("stateTransactions failed to encode input data for state sync execution", "Error", err) + + return nil + } + + txns = append(txns, + createStateTransactionWithData(f.config.SidechainBridgeAddr, inputData, stateTransactionsGasLimit)) + } + } + + f.logger.Debug("Apply state transaction", "num", len(txns)) + + return txns +} + +// createValidatorsUptimeTx create a StateTransaction, which invokes ValidatorSet smart contract +// and sends all the necessary metadata to it. +func (f *fsm) createValidatorsUptimeTx() (*types.Transaction, error) { + input, err := f.uptimeCounter.EncodeAbi() + if err != nil { + return nil, err + } + + return createStateTransactionWithData(f.config.ValidatorSetAddr, input, stateTransactionsGasLimit), nil +} + +// ValidateCommit is used to validate that a given commit is valid +func (f *fsm) ValidateCommit(from pbft.NodeID, seal []byte) error { + if f.proposal == nil || f.proposal.Hash == nil { + return fmt.Errorf("incorrect commit from %s. proposal unavailable", from) + } + + fromAddress := types.Address(ethgo.HexToAddress(string(from))) + validator := f.validators.Accounts().GetValidatorAccount(fromAddress) + + if validator == nil { + return fmt.Errorf("unable to resolve validator %s", from) + } + + signature, err := bls.UnmarshalSignature(seal) + if err != nil { + return fmt.Errorf("failed to unmarshall signature: %w", err) + } + + if !signature.Verify(validator.BlsKey, f.proposal.Hash) { + return fmt.Errorf("incorrect commit signature from %s", from) + } + + return nil +} + +// Validate validates a raw proposal (used if non-proposer) +func (f *fsm) Validate(proposal *pbft.Proposal) error { + f.logger.Debug("[FSM Validate]", "Proposal hash", hex.EncodeToHex(proposal.Hash)) + + var block types.Block + if err := block.UnmarshalRLP(proposal.Data); err != nil { + return fmt.Errorf("failed to decode block data. Error: %w", err) + } + + // validate proposal + if block.Hash() != types.BytesToHash(proposal.Hash) { + return fmt.Errorf("incorrect sign hash (current header#%d)", block.Number()) + } + + // validate header fields + if err := validateHeaderFields(f.parent, block.Header); err != nil { + return fmt.Errorf("failed to validate header (parent header# %d, current header#%d): %w", + f.parent.Number, block.Number(), err) + } + + blockExtra, err := GetIbftExtra(block.Header.ExtraData) + if err != nil { + return err + } + + // TODO: Validate validator set delta? + + blockNumber := block.Number() + if blockNumber > 1 { + // verify parent signature + // We skip block 0 (genesis) and block 1 (parent is genesis) + // since those blocks do not include any parent information with signatures + validators, err := f.polybftBackend.GetValidators(blockNumber-2, nil) + if err != nil { + return err + } + + f.logger.Trace("[FSM Validate]", "Block", blockNumber, "parent validators", validators) + parentHash := f.parent.Hash + + if err := blockExtra.Parent.VerifyCommittedFields(validators, parentHash); err != nil { + return fmt.Errorf( + "failed to verify signatures for (parent) block#%d. Block hash: %v, block#%d", + f.parent.Number, + parentHash, + blockNumber, + ) + } + } + + // TODO: Nemanja - do not validate state transaction because there isn't any + // if err := f.VerifyStateTransactions(block.Transactions); err != nil { + // return err + // } + + builtBlock, err := f.backend.ProcessBlock(f.parent, &block) + if err != nil { + return err + } + + f.block = builtBlock + f.proposal = proposal + + return nil +} + +func (f *fsm) VerifyStateTransactions(transactions []*types.Transaction) error { + if f.isEndOfEpoch { + err := f.verifyValidatorsUptimeTx(transactions) + if err != nil { + return err + } + + if len(transactions) > 0 { + transactions = transactions[1:] + } + } + + commitmentMessageSignedExists := false + nextStateSyncBundleIndex := f.stateSyncExecutionIndex + + for _, tx := range transactions { + // TO DO Nemanja - fix this with transactions + // skip if transaction is not of types.StateTransactionType type + // if tx.Type != types.StateTransactionType { + // continue + // } + if !f.isEndOfSprint { + return fmt.Errorf("state transaction in block which should not contain it: tx = %v", tx.Hash) + } + + decodedStateTx, err := decodeStateTransaction(tx.Input) // used to be Data + if err != nil { + return fmt.Errorf("state transaction error while decoding: tx = %v, err = %w", tx.Hash, err) + } + + switch stateTxData := decodedStateTx.(type) { + case *CommitmentMessageSigned: + if commitmentMessageSignedExists { + return fmt.Errorf("only one commitment is allowed per block: %v", tx.Hash) + } + + commitmentMessageSignedExists = true + signers, err := f.validators.Accounts().GetFilteredValidators(stateTxData.AggSignature.Bitmap) + + if err != nil { + return fmt.Errorf("error for state transaction while retrieving signers: tx = %v, error = %w", tx.Hash, err) + } + + if len(signers) < getQuorumSize(f.validators.Len()) { + return fmt.Errorf("quorum size not reached for state tx: %v", tx.Hash) + } + + aggs, err := bls.UnmarshalSignature(stateTxData.AggSignature.AggregatedSignature) + if err != nil { + return fmt.Errorf("error for state transaction while unmarshaling signature: tx = %v, error = %w", tx.Hash, err) + } + + verified := aggs.VerifyAggregated(signers.GetBlsKeys(), stateTxData.Message.Hash().Bytes()) + if !verified { + return fmt.Errorf("invalid signature for tx = %v", tx.Hash) + } + + f.commitmentToSaveOnRegister = stateTxData + case *BundleProof: + // every other bundle has to be in sequential order + if stateTxData.ID() != nextStateSyncBundleIndex { + return fmt.Errorf("bundles to execute are not in sequential order "+ + "according to state execution index from smart contract: %v", f.stateSyncExecutionIndex) + } + + nextStateSyncBundleIndex = stateTxData.StateSyncs[len(stateTxData.StateSyncs)-1].ID + 1 + + isVerified := false + + for _, commitment := range f.commitmentsToVerifyBundles { + if commitment.Message.ContainsStateSync(stateTxData.ID()) { + isVerified = true + + if err := commitment.Message.VerifyProof(stateTxData); err != nil { + return fmt.Errorf("state transaction error while validating proof: tx = %v, err = %w", + tx.Hash, err) + } + + break + } + } + + if !isVerified { + return fmt.Errorf("state transaction error while validating proof. "+ + "No appropriate commitment found to verify proof. tx = %v", tx.Hash) + } + } + } + + return nil +} + +// Insert inserts the sealed proposal +func (f *fsm) Insert(p *pbft.SealedProposal) error { + // In this function we should try to return little to no errors since + // at this point everything we have to do is just commit something that + // we should have already computed beforehand. + extra, _ := GetIbftExtra(f.block.Block.Header.ExtraData) + + // create map for faster access to indexes + nodeIDIndexMap := make(map[pbft.NodeID]int, f.validators.Len()) + for i, addr := range f.validators.Accounts().GetAddresses() { + nodeIDIndexMap[pbft.NodeID(addr.String())] = i // addr.String() == NodeId + } + + // populated bitmap according to nodeId from validator set and committed seals + // also populate slice of signatures + bitmap := bitmap.Bitmap{} + signatures := make(bls.Signatures, 0, len(p.CommittedSeals)) + + for _, commSeal := range p.CommittedSeals { + index, exists := nodeIDIndexMap[commSeal.NodeID] + if !exists { + return fmt.Errorf("invalid node id = %s", commSeal.NodeID) + } + + s, err := bls.UnmarshalSignature(commSeal.Signature) + if err != nil { + return fmt.Errorf("invalid signature = %s", commSeal.Signature) + } + + signatures = append(signatures, s) + + bitmap.Set(uint64(index)) + } + + aggregatedSignature, err := signatures.Aggregate().Marshal() + if err != nil { + return fmt.Errorf("could not aggregate seals: %w", err) + } + + // include aggregated signature of all committed seals + // also includes bitmap which contains all indexes from validator set which provides there seals + extra.Committed = &Signature{ + AggregatedSignature: aggregatedSignature, + Bitmap: bitmap, + } + + // Write extar data to header + f.block.Block.Header.ExtraData = append(make([]byte, 32), extra.MarshalRLPTo(nil)...) + + if err := f.backend.CommitBlock(f.block); err != nil { + return err + } + + if err := f.postInsertHook(); err != nil { + return err + } + + return nil +} + +// Height returns the height for the current round +func (f *fsm) Height() uint64 { + return f.parent.Number + 1 +} + +// ValidatorSet returns the validator set for the current round +func (f *fsm) ValidatorSet() pbft.ValidatorSet { + return f.validators +} + +// IsStuck returns whether the pbft is stuck +func (f *fsm) IsStuck(num uint64) (uint64, bool) { + return f.polybftBackend.CheckIfStuck(num) +} + +// getValidatorSetDelta calculates validator set delta based on parent and current header +func (f *fsm) getValidatorSetDelta(pendingBlockState *state.Transition) (*ValidatorSetDelta, error) { + provider := f.backend.GetStateProvider(pendingBlockState) + systemState := f.backend.GetSystemState(f.config, provider) + newValidators, err := systemState.GetValidatorSet() + + if err != nil { + return nil, fmt.Errorf("failed to retrieve validator set for current block %w", err) + } + + return createValidatorSetDelta(f.logger, f.validators.Accounts(), newValidators), nil +} + +// verifyValidatorsUptimeTx creates uptime transaction and compares its hash with the one extracted from the block. +func (f *fsm) verifyValidatorsUptimeTx(transactions []*types.Transaction) error { + var blockUptimeTx *types.Transaction + if len(transactions) > 0 { + blockUptimeTx = transactions[0] + } + + createdUptimeTx, err := f.createValidatorsUptimeTx() + if err != nil { + return err + } + + if f.isEndOfEpoch { + if blockUptimeTx == nil { + return errors.New("uptime transaction is not found in the epoch ending block") + } + + if blockUptimeTx.Hash != createdUptimeTx.Hash { + return fmt.Errorf( + "invalid uptime transaction. Expected '%s', but got '%s' uptime transaction hash", + blockUptimeTx.Hash, + createdUptimeTx.Hash, + ) + } + } else { + if blockUptimeTx != nil && blockUptimeTx.Hash == createdUptimeTx.Hash { + return errors.New("didn't expect uptime transaction in the middle of an epoch") + } + } + + return nil +} + +func validateHeaderFields(parent *types.Header, header *types.Header) error { + // verify parent hash + if parent.Hash != header.ParentHash { + return fmt.Errorf("incorrect header parent hash (parent=%s, header parent=%s)", parent.Hash, header.ParentHash) + } + // verify parent number + if header.Number != parent.Number+1 { + return fmt.Errorf("invalid number") + } + // verify time has passed + if header.Timestamp <= parent.Timestamp { + return fmt.Errorf("timestamp older than parent") + } + // verify mix digest + if header.MixHash != PolyMixDigest { + return fmt.Errorf("mix digest is not correct") + } + // difficulty must be > 0 + if header.Difficulty <= 0 { + return fmt.Errorf("difficulty should be greater than zero") + } + + return nil +} diff --git a/consensus/polybft/hash.go b/consensus/polybft/hash.go new file mode 100644 index 0000000000..653d079f74 --- /dev/null +++ b/consensus/polybft/hash.go @@ -0,0 +1,27 @@ +package polybft + +import ( + "github.com/0xPolygon/polygon-edge/types" +) + +// polyBFTHeaderHash defines the custom implementation for getting the header hash, +// because of the extraData field +func setupHeaderHashFunc() { + originalHeaderHash := types.HeaderHash + + types.HeaderHash = func(h *types.Header) types.Hash { + // when hashing the block for signing we have to remove from + // the extra field the seal and committed seal items + extra, err := GetIbftExtraClean(h.ExtraData) + if err != nil { + // TODO: this should not happen but we have to handle it somehow + panic(err) + } + + // override extra data without seals and committed seal items + hh := h.Copy() + hh.ExtraData = extra + + return originalHeaderHash(hh) + } +} diff --git a/consensus/polybft/mocks.go b/consensus/polybft/mocks.go new file mode 100644 index 0000000000..bb2e3229d8 --- /dev/null +++ b/consensus/polybft/mocks.go @@ -0,0 +1,118 @@ +package polybft + +import ( + "fmt" + "sort" + "strconv" + + "github.com/0xPolygon/polygon-edge/consensus/polybft/wallet" + "github.com/0xPolygon/polygon-edge/helper/hex" + "github.com/0xPolygon/polygon-edge/types" +) + +type testValidator struct { + alias string + account *wallet.Account +} + +type testValidators struct { + validators map[string]*testValidator +} + +func newTestValidator(alias string) *testValidator { + return &testValidator{alias: alias, account: wallet.GenerateAccount()} +} + +func newTestValidators(validatorsCount int) *testValidators { + aliases := make([]string, validatorsCount) + for i := 0; i < validatorsCount; i++ { + aliases[i] = strconv.Itoa(i) + } + + return newTestValidatorsWithAliases(aliases) +} + +func (v *testValidators) getPublicIdentities(aliases ...string) (res AccountSet) { //nolint:unparam + v.iterAcct(aliases, func(t *testValidator) { + res = append(res, t.ValidatorAccount()) + }) + + return +} + +func (v *testValidators) getValidators(aliases ...string) (res []*testValidator) { + v.iterAcct(aliases, func(t *testValidator) { + res = append(res, t) + }) + + return +} + +func (v *testValidator) ValidatorAccount() *ValidatorAccount { + return &ValidatorAccount{ + Address: types.Address(v.account.Ecdsa.Address()), + BlsKey: v.account.Bls.PublicKey(), + } +} + +func (v *testValidators) iterAcct(aliases []string, handle func(t *testValidator)) { + if len(aliases) == 0 { + // loop over the whole set + for k := range v.validators { + aliases = append(aliases, k) + } + // sort the names since they get queried randomly + sort.Strings(aliases) + } + + for _, alias := range aliases { + handle(v.getValidator(alias)) + } +} + +func (v *testValidators) getValidator(alias string) *testValidator { + vv, ok := v.validators[alias] + if !ok { + panic(fmt.Sprintf("BUG: validator %s does not exist", alias)) + } + + return vv +} + +func (v *testValidators) getParamValidators(aliases ...string) (res []*Validator) { + v.iterAcct(aliases, func(t *testValidator) { + res = append(res, t.paramsValidator()) + }) + + return +} + +func (v *testValidator) paramsValidator() *Validator { + bls := v.account.Bls.PublicKey().Marshal() + + return &Validator{ + Address: v.Address(), + BlsKey: hex.EncodeToHex(bls), + } +} + +func newTestValidatorsWithAliases(aliases []string) *testValidators { + validators := map[string]*testValidator{} + for _, alias := range aliases { + validators[alias] = newTestValidator(alias) + } + + return &testValidators{ + validators: validators, + } +} + +func (v *testValidator) Address() types.Address { + return types.Address(v.account.Ecdsa.Address()) +} + +func (v *testValidators) create(alias string) { + if _, ok := v.validators[alias]; !ok { + v.validators[alias] = newTestValidator(alias) + } +} diff --git a/consensus/polybft/polybft.go b/consensus/polybft/polybft.go new file mode 100644 index 0000000000..c1deb009d0 --- /dev/null +++ b/consensus/polybft/polybft.go @@ -0,0 +1,659 @@ +// Package polybft implements PBFT consensus algorithm integration and bridge feature +package polybft + +import ( + "context" + "encoding/json" + "errors" + "fmt" + "math/big" + "os" + "path/filepath" + "time" + + "github.com/0xPolygon/pbft-consensus" + "github.com/0xPolygon/polygon-edge/chain" + "github.com/0xPolygon/polygon-edge/consensus" + "github.com/0xPolygon/polygon-edge/consensus/polybft/proto" + "github.com/0xPolygon/polygon-edge/consensus/polybft/wallet" + "github.com/0xPolygon/polygon-edge/helper/progress" + "github.com/0xPolygon/polygon-edge/network" + "github.com/0xPolygon/polygon-edge/secrets" + "github.com/0xPolygon/polygon-edge/state" + "github.com/0xPolygon/polygon-edge/syncer" + "github.com/0xPolygon/polygon-edge/types" + "github.com/hashicorp/go-hclog" + "github.com/libp2p/go-libp2p/core/peer" + "go.opentelemetry.io/otel" +) + +const ( + minSyncPeers = 2 + pbftProto = "/pbft/0.2" + bridgeProto = "/bridge/0.2" + + blockTimeKey = "blockTime" + epochSizeKey = "epochSize" + sprintSizeKey = "sprintSize" + validatorSetSizeKey = "validatorSetSize" + sidechainBridgeAddrKey = "sidechainBridgeAddr" + validatorSetAddrKey = "validatorSetAddr" +) + +// polybftBackend is an interface defining polybft methods needed by fsm and sync tracker +type polybftBackend interface { + // CheckIfStuck checks if state machine is stuck. + CheckIfStuck(num uint64) (uint64, bool) + + // GetValidators retrieves validator set for the given block + GetValidators(blockNumber uint64, parents []*types.Header) (AccountSet, error) +} + +// Factory is the factory function to create a discovery consensus +func Factory(params *consensus.Params) (consensus.Consensus, error) { + logger := params.Logger.Named("polybft") + + setupHeaderHashFunc() + + polybft := &Polybft{ + config: params, + closeCh: make(chan struct{}), + logger: logger, + } + polybft.initializeConsensusConfig() + + return polybft, nil +} + +type Polybft struct { + // close closes all the pbft consensus + closeCh chan struct{} + + // pbft is the pbft engine + pbft *pbft.Pbft + + // state is reference to the struct which encapsulates consensus data persistence logic + state *State + + // consensus parametres + config *consensus.Params + + // consensusConfig is genesis configuration for polybft consensus protocol + consensusConfig *PolyBFTConfig + + // blockchain is a reference to the blockchain object + blockchain blockchainBackend + + // runtime handles consensus runtime features like epoch, state and event management + runtime *consensusRuntime + + // block time duration + blockTime time.Duration + + // dataDir is the data directory to store the info + dataDir string + + // reference to the syncer + syncer syncer.Syncer + + // topic for pbft consensus + pbftTopic *network.Topic + + // topic for pbft consensus + bridgeTopic *network.Topic + + // key encapsulates ECDSA address and BLS signing logic + key *wallet.Key + + // validatorsCache represents cache of validators snapshots + validatorsCache *validatorsSnapshotCache + + // logger + logger hclog.Logger +} + +func GenesisPostHookFactory(config *chain.Chain, engineName string) func(txn *state.Transition) error { + customConfigGeneric := config.Params.Engine[engineName] + + var pbftConfig PolyBFTConfig + + customConfigJSON, _ := json.Marshal(customConfigGeneric) + json.Unmarshal(customConfigJSON, &pbftConfig) + + return func(transition *state.Transition) error { + provider := NewStateProvider(transition) + systemState := NewSystemState(&pbftConfig, provider) + + for _, sc := range pbftConfig.SmartContracts { + result := transition.Create2(types.ZeroAddress, sc.Code, big.NewInt(0), 10000000) + if result.Failed() { + return result.Err + } + + // init validators + if sc.Address == pbftConfig.ValidatorSetAddr { + systemState.InitValidatorSet(pbftConfig.InitialValidatorSet, pbftConfig.ValidatorSetSize) + } + } + + return nil + } +} + +// Initialize initializes the consensus (e.g. setup data) +func (p *Polybft) Initialize() error { + p.logger.Info("initializing polybft...") + + // read account + account, err := wallet.GenerateNewAccountFromSecret( + p.config.SecretsManager, secrets.ValidatorBLSKey) + if err != nil { + return fmt.Errorf("failed to read account data. Error: %w", err) + } + + // set key + p.key = wallet.NewKey(account) + + // create and set syncer + p.syncer = syncer.NewSyncer( + p.config.Logger.Named("syncer"), + p.config.Network, + p.config.Blockchain, + time.Duration(p.config.BlockTime)*3*time.Second, + ) + + // set blockchain backend + p.blockchain = &blockchainWrapper{ + blockchain: p.config.Blockchain, + executor: p.config.Executor, + } + + // initialize pbft engine + opts := []pbft.ConfigOption{ + pbft.WithLogger(p.logger.Named("Pbft"). + StandardLogger(&hclog.StandardLoggerOptions{}), + ), + pbft.WithTracer(otel.Tracer("Pbft")), + } + + // create pbft topic + p.pbftTopic, err = p.config.Network.NewTopic(pbftProto, &proto.GossipMessage{}) + if err != nil { + return fmt.Errorf("failed to create pbft topic. Error: %w", err) + } + + p.pbft = pbft.New(p.key, &pbftTransportWrapper{topic: p.pbftTopic}, opts...) + + // check pbft topic - listen for transport messages and relay them to pbft + err = p.pbftTopic.Subscribe(func(obj interface{}, from peer.ID) { + gossipMsg, _ := obj.(*proto.GossipMessage) + + var msg *pbft.MessageReq + if err := json.Unmarshal(gossipMsg.Data, &msg); err != nil { + panic(err) + } + + p.pbft.PushMessage(msg) + }) + + if err != nil { + return fmt.Errorf("topic subscription failed: %w", err) + } + + // create bridge topic + bridgeTopic, err := p.config.Network.NewTopic(bridgeProto, &proto.TransportMessage{}) + if err != nil { + return fmt.Errorf("failed to create bridge topic. Error: %w", err) + } + // set pbft topic, it will be check if/when the bridge is enabled + p.bridgeTopic = bridgeTopic + + // set block time + p.blockTime = time.Duration(p.config.BlockTime) + + // initialize polybft consensus data directory + p.dataDir = filepath.Join(p.config.Config.Path, "polybft") + // create the data dir if not exists + if err := os.MkdirAll(p.dataDir, 0755); err != nil { + return fmt.Errorf("failed to create data directory. Error: %w", err) + } + + stt, err := newState(filepath.Join(p.dataDir, stateFileName), p.logger) + if err != nil { + return fmt.Errorf("failed to create state instance. Error: %w", err) + } + + p.state = stt + p.validatorsCache = newValidatorsSnapshotCache(p.config.Logger, stt, p.consensusConfig.EpochSize, p.blockchain) + + return nil +} + +// Start starts the consensus and servers +func (p *Polybft) Start() error { + p.logger.Info("starting polybft consensus") + + // start syncer + if err := p.startSyncing(); err != nil { + return err + } + + // start consensus + return p.startSealing() +} + +// startSyncing starts the synchroniser +func (p *Polybft) startSyncing() error { + if err := p.syncer.Start(); err != nil { + return fmt.Errorf("failed to start syncer. Error: %w", err) + } + + go func() { + nullHandler := func(b *types.Block) bool { + return false + } + + if err := p.syncer.Sync(nullHandler); err != nil { + panic(fmt.Errorf("failed to sync blocks. Error: %w", err)) + } + }() + + return nil +} + +// startSealing is executed if the PolyBFT protocol is running in sealing mode. +func (p *Polybft) startSealing() error { + p.logger.Info("Using signer", "address", p.key.String()) + + if err := p.startRuntime(); err != nil { + return fmt.Errorf("consensus runtime start failed: %w", err) + } + + go func() { + // start the pbft process + p.startPbftProcess() + }() + + return nil +} + +// initializeConsensusConfig populates consensus configuration +func (p *Polybft) initializeConsensusConfig() { + customConfigGeneric := p.config.Config.Config + + var polyBftConfig PolyBFTConfig + + customConfigJSON, _ := json.Marshal(customConfigGeneric) + json.Unmarshal(customConfigJSON, &polyBftConfig) + + // TODO: Bridge, validators configuration + p.consensusConfig = &polyBftConfig +} + +// startRuntime starts consensus runtime +func (p *Polybft) startRuntime() error { + runtimeConfig := &runtimeConfig{ + PolyBFTConfig: p.consensusConfig, + Key: p.key, + DataDir: p.dataDir, + Transport: &bridgeTransportWrapper{ + topic: p.bridgeTopic, + logger: p.logger.Named("bridge_transport"), + }, + State: p.state, + blockchain: p.blockchain, + polybftBackend: p, + } + + runtime, err := newConsensusRuntime(p.logger, runtimeConfig) + if err != nil { + return err + } + + p.runtime = runtime + + if runtime.IsBridgeEnabled() { + err := p.bridgeTopic.Subscribe(func(obj interface{}, from peer.ID) { + msg, _ := obj.(*proto.TransportMessage) + var transportMsg *TransportMessage + if err := json.Unmarshal(msg.Data, &transportMsg); err != nil { + panic(err) + } + if _, err := p.runtime.deliverMessage(transportMsg); err != nil { + p.logger.Warn(fmt.Sprintf("Failed to deliver message. Error: %s", err)) + } + }) + if err != nil { + return fmt.Errorf("topic subscription failed:%w", err) + } + } + + return nil +} + +func (p *Polybft) startPbftProcess() { + // wait to have at least n peers connected. The 2 is just an initial heuristic value + // Most likely we will parametrize this in the future. + if !p.waitForNPeers() { + return + } + + // subscribe to new block events + var ( + newBlockSub = p.blockchain.SubscribeEvents() + syncerBlockCh = make(chan uint64) + ) + + // Receive a notification every time syncer manages + // to insert a valid block. + go func() { + eventCh := newBlockSub.GetEventCh() + + for { + select { + case ev := <-eventCh: + currentBlockNum := p.blockchain.CurrentHeader().Number + if ev.Source == "syncer" { + if ev.NewChain[0].Number < currentBlockNum { + continue + } + } + + if p.isSynced() { + syncerBlockCh <- currentBlockNum + } + + case <-p.closeCh: + return + } + } + }() + + defer newBlockSub.Close() + +SYNC: + if !p.isSynced() { + <-syncerBlockCh + } + + lastBlock := p.blockchain.CurrentHeader() + p.logger.Info("startPbftProcess", + "header hash", lastBlock.Hash, + "computed hash", lastBlock.Hash, + "header number", lastBlock.Number) + + currentValidators, err := p.GetValidators(lastBlock.Number, nil) + if err != nil { + p.logger.Error("failed to query current validator set", "block number", lastBlock.Number, "error", err) + } + + p.runtime.setIsActiveValidator(currentValidators.ContainsNodeID(p.key.NodeID())) + + if !p.runtime.isActiveValidator() { + // inactive validator is not part of the consensus protocol and it should just perform syncing + goto SYNC + } + + // we have to start the bridge snapshot when we have finished syncing + if err := p.runtime.restartEpoch(lastBlock); err != nil { + p.logger.Error("failed to restart epoch", "error", err) + + goto SYNC + } + + for { + if err := p.runCycle(); err != nil { + if errors.Is(err, errNotAValidator) { + p.logger.Info("Node is no longer in validator set") + } else { + p.logger.Error("an error occurred while running a state machine cycle.", "error", err) + } + + goto SYNC + } + + switch p.pbft.GetState() { + case pbft.SyncState: + // we need to go back to sync + goto SYNC + case pbft.DoneState: + // everything worked, move to the next iteration + default: + // stopped + return + } + } +} + +// isSynced return true if the current header from the local storage corresponds to the highest block of syncer +func (p *Polybft) isSynced() bool { + // TODO: Check could we change following condition to this: + // p.syncer.GetSyncProgression().CurrentBlock >= p.syncer.GetSyncProgression().HighestBlock + syncProgression := p.syncer.GetSyncProgression() + + return syncProgression == nil || + p.blockchain.CurrentHeader().Number >= syncProgression.HighestBlock +} + +// runCycle runs a single cycle of the state machine and indicates if node should exit the consensus or keep on running +func (p *Polybft) runCycle() error { + ff, err := p.runtime.FSM() + if err != nil { + return err + } + + if err = p.pbft.SetBackend(ff); err != nil { + return err + } + + // this cancel is not sexy + ctx, cancelFn := context.WithCancel(context.Background()) + + go func() { + <-p.closeCh + cancelFn() + }() + + p.pbft.Run(ctx) + + return nil +} + +func (p *Polybft) waitForNPeers() bool { + for { + select { + case <-p.closeCh: + return false + case <-time.After(2 * time.Second): + } + + numPeers := len(p.config.Network.Peers()) + if numPeers >= minSyncPeers { + break + } + } + + return true +} + +// Close closes the connection +func (p *Polybft) Close() error { + if p.syncer != nil { + if err := p.syncer.Close(); err != nil { + return err + } + } + + close(p.closeCh) + + return nil +} + +// GetSyncProgression retrieves the current sync progression, if any +func (p *Polybft) GetSyncProgression() *progress.Progression { + return p.syncer.GetSyncProgression() +} + +// VerifyHeader implements consensus.Engine and checks whether a header conforms to the consensus rules +func (p *Polybft) VerifyHeader(header *types.Header) error { + // Short circuit if the header is known + _, ok := p.blockchain.GetHeaderByHash(header.Hash) + if ok { + return nil + } + + parent, ok := p.blockchain.GetHeaderByHash(header.ParentHash) + if !ok { + return fmt.Errorf( + "unable to get parent header for block number %d", + header.Number, + ) + } + + return p.verifyHeaderImpl(parent, header, nil) +} + +func (p *Polybft) verifyHeaderImpl(parent, header *types.Header, parents []*types.Header) error { + blockNumber := header.Number + if blockNumber == 0 { + // TODO: Remove, this was just for simplicity since I had started the chain already, + // add the mix hash into the genesis command + return nil + } + + // validate header fields + if err := validateHeaderFields(parent, header); err != nil { + return fmt.Errorf("failed to validate header for block %d. error = %w", blockNumber, err) + } + + validators, err := p.GetValidators(blockNumber-1, parents) + if err != nil { + return fmt.Errorf("failed to validate header for block %d. could not retrieve block validators:%w", blockNumber, err) + } + + // decode the extra field and validate the signatures + extra, err := GetIbftExtra(header.ExtraData) + if err != nil { + return fmt.Errorf("failed to verify header for block %d. get extra error = %w", blockNumber, err) + } + + if extra.Committed == nil { + return fmt.Errorf( + "failed to verify signatures for block %d because signatures are nil. Block hash: %v", + blockNumber, + header.Hash, + ) + } + + if err := extra.Committed.VerifyCommittedFields(validators, header.Hash); err != nil { + return fmt.Errorf("failed to verify signatures for block %d. Block hash: %v", blockNumber, header.Hash) + } + + // validate the signatures for parent (skip block 1 because genesis does not have committed) + if blockNumber > 1 { + if extra.Parent == nil { + return fmt.Errorf( + "failed to verify signatures for parent of block %d because signatures are nil. Parent hash: %v", + blockNumber, + parent.Hash, + ) + } + + parentValidators, err := p.GetValidators(blockNumber-2, parents) + if err != nil { + return fmt.Errorf( + "failed to validate header for block %d. could not retrieve parent validators:%w", + blockNumber, + err, + ) + } + + if err := extra.Parent.VerifyCommittedFields(parentValidators, parent.Hash); err != nil { + return fmt.Errorf("failed to verify signatures for parent of block %d. Parent hash: %v", blockNumber, parent.Hash) + } + } + + return nil +} + +func (p *Polybft) CheckIfStuck(num uint64) (uint64, bool) { + if !p.isSynced() { + // we are currently syncing new data, for sure we are stuck. + // We can return 0 here at least for now since that value is only used + // for the open telemetry tracing. + return 0, true + } + + // Now, we have to check if the current value of the round 'num' is lower + // than our currently synced block. + currentHeader := p.blockchain.CurrentHeader().Number + if currentHeader > num { + // at this point, it will exit the sync process and start the fsm round again + // (or sync a small number of blocks) to start from the correct position. + return currentHeader, true + } + + return 0, false +} + +func (p *Polybft) GetValidators(blockNumber uint64, parents []*types.Header) (AccountSet, error) { + return p.validatorsCache.GetSnapshot(blockNumber, parents) +} + +// ProcessHeaders updates the snapshot based on the verified headers +func (p *Polybft) ProcessHeaders(_ []*types.Header) error { + // Not required + return nil +} + +// GetBlockCreator retrieves the block creator (or signer) given the block header +func (p *Polybft) GetBlockCreator(h *types.Header) (types.Address, error) { + return types.BytesToAddress(h.Miner), nil +} + +// PreCommitState a hook to be called before finalizing state transition on inserting block +func (p *Polybft) PreCommitState(_ *types.Header, _ *state.Transition) error { + // Not required + return nil +} + +type pbftTransportWrapper struct { + topic *network.Topic +} + +func (p *pbftTransportWrapper) Gossip(msg *pbft.MessageReq) error { + data, err := json.Marshal(msg) + if err != nil { + return err + } + + return p.topic.Publish( + &proto.GossipMessage{ + Data: data, + }) +} + +type bridgeTransportWrapper struct { + topic *network.Topic + logger hclog.Logger +} + +func (b *bridgeTransportWrapper) Gossip(msg interface{}) { + data, err := json.Marshal(msg) + if err != nil { + b.logger.Warn("Failed to marshal bridge message", "err", err) + + return + } + + protoMsg := &proto.GossipMessage{ + Data: data, + } + + err = b.topic.Publish(protoMsg) + if err != nil { + b.logger.Warn("Failed to gossip bridge message", "err", err) + } +} + +var _ polybftBackend = &Polybft{} diff --git a/consensus/polybft/polybft_config.go b/consensus/polybft/polybft_config.go new file mode 100644 index 0000000000..abc1154e1e --- /dev/null +++ b/consensus/polybft/polybft_config.go @@ -0,0 +1,54 @@ +package polybft + +import ( + "time" + + "github.com/0xPolygon/polygon-edge/types" +) + +// PolyBFTConfig is the configuration file for the Polybft consensus protocol. +type PolyBFTConfig struct { + InitialValidatorSet []*Validator `json:"initialValidatorSet"` + Bridge *BridgeConfig `json:"bridge"` + + ValidatorSetSize int `json:"validatorSetSize"` + + // Address of the system contracts, as of now (testing) this is populated automatically during genesis + ValidatorSetAddr types.Address `json:"validatorSetAddr"` + SidechainBridgeAddr types.Address `json:"sidechainBridgeAddr"` + + // size of the epoch and sprint + EpochSize uint64 `json:"epochSize"` + SprintSize uint64 `json:"sprintSize"` + + BlockTime time.Duration `json:"blockTime"` + + SmartContracts []SmartContract `json:"smartContracts"` +} + +type SmartContract struct { + Address types.Address `json:"address"` + Code []byte `json:"code"` + Name string `json:"name"` +} + +// BridgeConfig is the configuration for the bridge +type BridgeConfig struct { + BridgeAddr types.Address `json:"bridgeAddr"` + CheckpointAddr types.Address `json:"checkpointAddr"` + JSONRPCEndpoint string `json:"jsonRPCEndpoint"` +} + +func (p *PolyBFTConfig) IsBridgeEnabled() bool { + return p.Bridge != nil +} + +type Validator struct { + Address types.Address + BlsKey string +} + +// DebugConfig is a struct used for test configuration in init genesis +type DebugConfig struct { + ValidatorSetSize uint64 `json:"validatorSetSize"` +} diff --git a/consensus/polybft/polybftcontracts/Dockerfile b/consensus/polybft/polybftcontracts/Dockerfile new file mode 100644 index 0000000000..1769c3aeac --- /dev/null +++ b/consensus/polybft/polybftcontracts/Dockerfile @@ -0,0 +1,10 @@ +FROM node:latest + +# Create app directory +WORKDIR /usr/src/app + +# Install app dependencies +COPY . . +RUN npm install + +ENTRYPOINT npx hardhat compile diff --git a/consensus/polybft/polybftcontracts/README.md b/consensus/polybft/polybftcontracts/README.md new file mode 100644 index 0000000000..969f275e22 --- /dev/null +++ b/consensus/polybft/polybftcontracts/README.md @@ -0,0 +1,14 @@ + +# Smart contracts + +This is the folder for all the smart contracts of the PoS chain including both the ones for the sidechain and the rootchain. We have merged both under the same folder so that we do not have to run multiple hardhat deployments around. + +## Rootchain + +### Bridge.sol + +## Sidechain + +### ERC20Bridge.sol + +### MintERC20.sol diff --git a/consensus/polybft/polybftcontracts/artifacts_test.go b/consensus/polybft/polybftcontracts/artifacts_test.go new file mode 100644 index 0000000000..e02844039f --- /dev/null +++ b/consensus/polybft/polybftcontracts/artifacts_test.go @@ -0,0 +1,18 @@ +package polybftcontracts + +import ( + "testing" + + "github.com/stretchr/testify/assert" +) + +func TestArtifacts(t *testing.T) { + artifact, err := ReadArtifact("sidechain", "Validator") + assert.NoError(t, err) + assert.NotNil(t, artifact) +} + +func TestArtifactsError(t *testing.T) { + _, err := ReadArtifact("sidechaine", "Validator") + assert.Error(t, err) +} diff --git a/consensus/polybft/polybftcontracts/artificats.go b/consensus/polybft/polybftcontracts/artificats.go new file mode 100644 index 0000000000..3531bc1ab4 --- /dev/null +++ b/consensus/polybft/polybftcontracts/artificats.go @@ -0,0 +1,80 @@ +package polybftcontracts + +import ( + "embed" + "encoding/json" + "fmt" + + "github.com/0xPolygon/polygon-edge/helper/hex" + "github.com/umbracle/ethgo/abi" +) + +//go:embed artifacts/contracts/* +var artifactsDir embed.FS + +func MustReadArtifact(chain string, name string) *Artifact { + artifact, err := ReadArtifact(chain, name) + if err != nil { + panic(err) + } + + return artifact +} + +func ReadArtifact(chain string, name string) (*Artifact, error) { + var directory string + if chain == "sidechain" || chain == "child" { + directory = "sidechain" + } else if chain == "rootchain" || chain == "root" { + directory = "rootchain" + } else { + return nil, fmt.Errorf("chain has to be either 'rootchain' or 'sidechain'") + } + + fileName := fmt.Sprintf("artifacts/contracts/%s/%s.sol/%s.json", directory, name, name) + + data, err := artifactsDir.ReadFile(fileName) + if err != nil { + return nil, err + } + + var hexRes struct { + Abi *abi.ABI + Bytecode string + DeployedBytecode string + } + + if err := json.Unmarshal(data, &hexRes); err != nil { + return nil, fmt.Errorf("artifact found but no correct format: %w", err) + } + + res := &Artifact{ + Abi: hexRes.Abi, + Bytecode: hex.MustDecodeHex(hexRes.Bytecode), + DeployedBytecode: hex.MustDecodeHex(hexRes.DeployedBytecode), + } + + return res, nil +} + +type Artifact struct { + Abi *abi.ABI + Bytecode []byte + DeployedBytecode []byte +} + +func (a *Artifact) DeployInput(args []interface{}) ([]byte, error) { + input := []byte{} + input = append(input, a.Bytecode...) + + if a.Abi.Constructor != nil { + argsInput, err := abi.Encode(args, a.Abi.Constructor.Inputs) + if err != nil { + return nil, err + } + + input = append(input, argsInput...) + } + + return input, nil +} diff --git a/consensus/polybft/polybftcontracts/compile.sh b/consensus/polybft/polybftcontracts/compile.sh new file mode 100755 index 0000000000..b922fefe17 --- /dev/null +++ b/consensus/polybft/polybftcontracts/compile.sh @@ -0,0 +1,15 @@ +#!/bin/bash + +set -x + +if [[ "$(docker images -q v3_contracts_builder:latest 2> /dev/null)" == "" ]]; then + docker build -t v3_contracts_builder -f $PWD/consensus/polybft/polybftcontracts/Dockerfile $PWD/consensus/polybft/polybftcontracts/ +fi + +docker run \ + --name v3_build_contracts \ + -v $PWD/consensus/polybft/polybftcontracts/contracts:/usr/src/app/contracts \ + -v $PWD/consensus/polybft/polybftcontracts/artifacts:/usr/src/app/artifacts \ + -v $PWD/consensus/polybft/polybftcontracts/cache:/usr/src/app/cache \ + v3_contracts_builder +docker rm -f v3_build_contracts diff --git a/consensus/polybft/polybftcontracts/contracts/rootchain/Checkpoint.sol b/consensus/polybft/polybftcontracts/contracts/rootchain/Checkpoint.sol new file mode 100644 index 0000000000..3eb9f31b02 --- /dev/null +++ b/consensus/polybft/polybftcontracts/contracts/rootchain/Checkpoint.sol @@ -0,0 +1,14 @@ +//SPDX-License-Identifier: Unlicense +pragma solidity ^0.8.0; + +import "./RootchainBridge.sol"; + +contract Checkpoint { + function checkpoint(uint256 _checkpoint) public { + // 1. TODO: data checkpoint + + // 2. emit bridge checkpoint event + RootchainBridge c = RootchainBridge(0x6FE03c2768C9d800AF3Dedf1878b5687FE120a27); + c.emitEvent(0xBd770416a3345F91E4B34576cb804a576fa48EB1, abi.encode(_checkpoint)); + } +} diff --git a/consensus/polybft/polybftcontracts/contracts/rootchain/RootchainBridge.sol b/consensus/polybft/polybftcontracts/contracts/rootchain/RootchainBridge.sol new file mode 100644 index 0000000000..fe24130a25 --- /dev/null +++ b/consensus/polybft/polybftcontracts/contracts/rootchain/RootchainBridge.sol @@ -0,0 +1,17 @@ +//SPDX-License-Identifier: Unlicense +pragma solidity ^0.8.0; + +contract RootchainBridge { + event StateSync( + uint256 indexed id, + address indexed sender, + address indexed target, + bytes data + ); + uint64 index; + + function emitEvent(address target, bytes memory data) public { + emit StateSync(index, msg.sender, target, data); + index++; + } +} diff --git a/consensus/polybft/polybftcontracts/contracts/sidechain/ERC20Bridge.sol b/consensus/polybft/polybftcontracts/contracts/sidechain/ERC20Bridge.sol new file mode 100644 index 0000000000..5aed14d1a3 --- /dev/null +++ b/consensus/polybft/polybftcontracts/contracts/sidechain/ERC20Bridge.sol @@ -0,0 +1,27 @@ +// contracts/GLDToken.sol +// SPDX-License-Identifier: MIT +pragma solidity ^0.8.0; + +import "./SidechainBridge.sol"; + +interface ERC20BridgeToken { + function mintTo(address to, uint256 amount) external payable; +} + +contract ERC20Bridge is BridgeImpl { + ERC20BridgeToken target; + + constructor(ERC20BridgeToken _target) { + target = _target; + } + + // TODO: How to utilize index and sender parameters? + function onStateReceive( + uint64, /*index*/ + address, /*sender*/ + bytes memory data + ) external payable override { + (address to, uint256 amount) = abi.decode(data, (address, uint256)); + target.mintTo(to, amount); + } +} diff --git a/consensus/polybft/polybftcontracts/contracts/sidechain/GasUsageBenchmark.sol b/consensus/polybft/polybftcontracts/contracts/sidechain/GasUsageBenchmark.sol new file mode 100644 index 0000000000..7f59ee042a --- /dev/null +++ b/consensus/polybft/polybftcontracts/contracts/sidechain/GasUsageBenchmark.sol @@ -0,0 +1,19 @@ +// SPDX-License-Identifier: MIT +pragma solidity ^0.8.0; + +import "./SidechainBridge.sol"; + +contract GasUsageBenchmark is BridgeImpl { + uint64 counter; + + function onStateReceive( + uint64, /*index*/ + address, /*sender*/ + bytes memory data + ) external payable override { + uint64 iterations = abi.decode(data, (uint64)); + for (uint64 i = 0; i < iterations; i++) { + counter++; + } + } +} diff --git a/consensus/polybft/polybftcontracts/contracts/sidechain/MintERC20.sol b/consensus/polybft/polybftcontracts/contracts/sidechain/MintERC20.sol new file mode 100644 index 0000000000..bc53c220da --- /dev/null +++ b/consensus/polybft/polybftcontracts/contracts/sidechain/MintERC20.sol @@ -0,0 +1,23 @@ +// contracts/GLDToken.sol +// SPDX-License-Identifier: MIT +pragma solidity ^0.8.0; + +import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; + +// Implementation of the erc20 token with a mint function. This contract uses +// the mint function because it has to 'generate' the new tokens in the chain +// whenever they are created on the other side. +contract MintERC20 is ERC20 { + constructor() ERC20("Gold", "GLD") {} + + event Mint(address to, uint256 amount); + + function mint(uint256 amount) public payable { + _mint(msg.sender, amount); + } + + function mintTo(address to, uint256 amount) public payable { + _mint(to, amount); + emit Mint(to, amount); + } +} diff --git a/consensus/polybft/polybftcontracts/contracts/sidechain/SidechainBridge.sol b/consensus/polybft/polybftcontracts/contracts/sidechain/SidechainBridge.sol new file mode 100644 index 0000000000..aa8a301648 --- /dev/null +++ b/consensus/polybft/polybftcontracts/contracts/sidechain/SidechainBridge.sol @@ -0,0 +1,129 @@ +//SPDX-License-Identifier: Unlicense +pragma solidity ^0.8.0; + +interface BridgeImpl { + function onStateReceive( + uint64 _index, + address sender, + bytes memory data + ) external payable; +} + +// Bridge is the proxy that calls the specific bridge contracts +contract SidechainBridge { + uint256 public constant MAX_GAS = 100000; + // Index of the next state sync which is going to be committed. + uint64 nextCommittedStateSyncIndex; + // Index of the next state sync which is going to be executed. + uint64 nextExecutionStateSyncIndex; + + // 0=success, 1=failure + enum ResultStatus { + SUCCESS, + FAILURE + } + + event ResultEvent( + uint64 indexed index, + address indexed sender, + ResultStatus indexed status, + bytes32 message + ); + + struct Signature { + bytes aggregatedSignature; + bytes bitmap; + } + + struct Proof { + bytes32 hash; + bytes value; + } + + struct StateSync { + uint64 id; + address sender; + address target; + bytes data; + } + + struct Commitment { + bytes32 merkleRoot; + uint64 fromIndex; + uint64 toIndex; + uint64 bundleSize; + uint64 epoch; + } + + function registerCommitment( + Commitment calldata commitment, + Signature calldata /*signature*/ + ) external payable { + // Omitted signature verification and caching commitments + nextCommittedStateSyncIndex = commitment.toIndex + 1; + } + + function executeBundle( + Proof[] calldata, /*proof*/ + StateSync[] calldata stateSyncEvents + ) public payable { + require( + stateSyncEvents.length > 0, + "Provided state sync events bundle is empty" + ); + // Omitted proof verification + for (uint256 i = 0; i < stateSyncEvents.length; i++) { + _executeStateSync(stateSyncEvents[i]); + } + } + + function _executeStateSync(StateSync memory _stateSync) private { + // validate order + require( + nextExecutionStateSyncIndex == _stateSync.id, + "Index must be sequential" + ); + nextExecutionStateSyncIndex++; + + bytes memory paramData = abi.encodeWithSignature( + "onStateReceive(uint64,address,bytes)", + _stateSync.id, + _stateSync.sender, + _stateSync.data + ); + + (bool success, bytes memory returnData) = _stateSync.target.call{ + gas: MAX_GAS + }(paramData); + + bytes32 message; + + assembly { + message := mload(add(returnData, 32)) + } + // emit a ResultEvent indicating whether invocation of bridge was successful or not + if (success) { + emit ResultEvent( + _stateSync.id, + _stateSync.sender, + ResultStatus.SUCCESS, + message + ); + } else { + emit ResultEvent( + _stateSync.id, + _stateSync.sender, + ResultStatus.FAILURE, + message + ); + } + } + + function getNextCommittedIndex() public view returns (uint64) { + return nextCommittedStateSyncIndex; + } + + function getNextExecutionIndex() public view returns (uint64) { + return nextExecutionStateSyncIndex; + } +} diff --git a/consensus/polybft/polybftcontracts/contracts/sidechain/Validator.sol b/consensus/polybft/polybftcontracts/contracts/sidechain/Validator.sol new file mode 100644 index 0000000000..c181023cd2 --- /dev/null +++ b/consensus/polybft/polybftcontracts/contracts/sidechain/Validator.sol @@ -0,0 +1,83 @@ +//SPDX-License-Identifier: Unlicense +pragma solidity ^0.8.0; + +import "./SidechainBridge.sol"; + +contract Validator is BridgeImpl { + // As of now we are going to use the same thing for both + // bridge and validators + // list of current validators + struct ValidatorAccount { + address ecdsa; + uint256[4] bls; + } + ValidatorAccount[] allValidators; + ValidatorAccount[] currentValidators; + uint64 epoch; + uint64 validatorSetSize; + uint256 indexToStart = 1; + + // constructor(ValidatorAccount[] memory _validators, uint64 _validatorSetSize) { + // init(_validators, _validatorSetSize); + // } + + constructor() { + } + + function init(ValidatorAccount[] memory _validators, uint64 _validatorSetSize) public { + require(_validators.length >= _validatorSetSize, "Validator snapshot size can not be bigger than length of validators array"); + for (uint256 i = 0; i < _validators.length; i++) { + allValidators.push(_validators[i]); + } + validatorSetSize = _validatorSetSize; + } + + function getValidators() public view returns (ValidatorAccount[] memory) { + if (currentValidators.length == 0) { + return allValidators; + } + return currentValidators; + } + + function uptime(bytes memory data) public payable { + // TODO: validator set should be updated based on provided data + // For now, we only return a number of validators that is required by tests + if (validatorSetSize > 0) { + delete currentValidators; + uint256 validatorIndex = indexToStart; + for(uint256 i=0; i { + const accounts = await hre.ethers.getSigners(); + + for (const account of accounts) { + console.log(account.address); + } +}); + +// You need to export an object to set up your config +// Go to https://hardhat.org/config/ to learn more + +/** + * @type import('hardhat/config').HardhatUserConfig + */ +module.exports = { + solidity: "0.8.4", +}; diff --git a/consensus/polybft/polybftcontracts/package-lock.json b/consensus/polybft/polybftcontracts/package-lock.json new file mode 100644 index 0000000000..c1c0de09ce --- /dev/null +++ b/consensus/polybft/polybftcontracts/package-lock.json @@ -0,0 +1,27781 @@ +{ + "name": 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/dev/null +++ b/consensus/polybft/polybftcontracts/scripts/sample-script.js @@ -0,0 +1,32 @@ +// We require the Hardhat Runtime Environment explicitly here. This is optional +// but useful for running the script in a standalone fashion through `node