chore: add gnoland init

gno.land/cmd/gnoland/cmd_init.go

@@ -0,0 +1,99 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"path/filepath"
+	"time"
+
+	"github.com/gnolang/gno/gno.land/pkg/gnoland"
+	"github.com/gnolang/gno/tm2/pkg/bft/config"
+	"github.com/gnolang/gno/tm2/pkg/bft/privval"
+	"github.com/gnolang/gno/tm2/pkg/commands"
+	"github.com/gnolang/gno/tm2/pkg/log"
+	osm "github.com/gnolang/gno/tm2/pkg/os"
+)
+
+func newInitCmd(io *commands.IO) *commands.Command {
+	cfg := &initCfg{}
+
+	return commands.NewCommand(
+		commands.Metadata{
+			Name:       "init",
+			ShortUsage: "init [flags]",
+			ShortHelp:  "Initialize a gnoland configuration on file-system",
+		},
+		cfg,
+		func(_ context.Context, args []string) error {
+			return execInit(cfg, args, io)
+		},
+	)
+}
+
+type initCfg struct {
+	// common
+	rootDir string
+	config  string
+
+	// gnoland init specific
+	chainID               string
+	genesisTxsFile        string
+	genesisRemote         string
+	skipFailingGenesisTxs bool
+	genesisBalancesFile   string
+	genesisMaxVMCycles    int64
+}
+
+func (c *initCfg) RegisterFlags(fs *flag.FlagSet) {
+	// common
+	fs.StringVar(&c.rootDir, "root-dir", "testdir", "directory for config and data")
+	fs.StringVar(&c.config, "config", "", "config file (optional)")
+
+	// init specific
+	fs.BoolVar(&c.skipFailingGenesisTxs, "skip-failing-genesis-txs", false, "don't panic when replaying invalid genesis txs")
+	fs.StringVar(&c.genesisBalancesFile, "genesis-balances-file", "./genesis/genesis_balances.txt", "initial distribution file")
+	fs.StringVar(&c.genesisTxsFile, "genesis-txs-file", "./genesis/genesis_txs.txt", "initial txs to replay")
+	fs.StringVar(&c.chainID, "chainid", "dev", "the ID of the chain")
+	fs.StringVar(&c.genesisRemote, "genesis-remote", "localhost:26657", "replacement for '%%REMOTE%%' in genesis")
+	fs.Int64Var(&c.genesisMaxVMCycles, "genesis-max-vm-cycles", 10_000_000, "set maximum allowed vm cycles per operation. Zero means no limit.")
+}
+
+func execInit(c *initCfg, args []string, io *commands.IO) error {
+	logger := log.NewTMLogger(log.NewSyncWriter(io.Out))
+	rootDir := c.rootDir
+
+	cfg := config.LoadOrMakeConfigWithOptions(rootDir, func(cfg *config.Config) {
+		cfg.Consensus.CreateEmptyBlocks = true
+		cfg.Consensus.CreateEmptyBlocksInterval = 0 * time.Second
+	})
+
+	// create priv validator first.
+	// need it to generate genesis.json
+	newPrivValKey := cfg.PrivValidatorKeyFile()
+	newPrivValState := cfg.PrivValidatorStateFile()
+	priv := privval.LoadOrGenFilePV(newPrivValKey, newPrivValState)
+
+	// write genesis file if missing.
+	genesisFilePath := filepath.Join(rootDir, cfg.Genesis)
+	if !osm.FileExists(genesisFilePath) {
+		genDoc := makeGenesisDoc(
+			priv.GetPubKey(),
+			c.chainID,
+			c.genesisBalancesFile,
+			loadGenesisTxs(c.genesisTxsFile, c.chainID, c.genesisRemote),
+		)
+		writeGenesisFile(genDoc, genesisFilePath)
+	}
+
+	// create application and node.
+	gnoApp, err := gnoland.NewApp(rootDir, c.skipFailingGenesisTxs, logger, c.genesisMaxVMCycles)
+	if err != nil {
+		return fmt.Errorf("error in creating new app: %w", err)
+	}
+
+	cfg.LocalApp = gnoApp
+
+	fmt.Fprintln(io.Err, "Node created.")
+	return nil
+}

gno.land/cmd/gnoland/cmd_start.go

@@ -0,0 +1,79 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+
+	"github.com/gnolang/gno/gno.land/pkg/gnoland"
+	"github.com/gnolang/gno/tm2/pkg/bft/config"
+	"github.com/gnolang/gno/tm2/pkg/bft/node"
+	"github.com/gnolang/gno/tm2/pkg/commands"
+	"github.com/gnolang/gno/tm2/pkg/log"
+	osm "github.com/gnolang/gno/tm2/pkg/os"
+)
+
+func newStartCmd(io *commands.IO) *commands.Command {
+	cfg := &startCfg{}
+
+	return commands.NewCommand(
+		commands.Metadata{
+			Name:       "start",
+			ShortUsage: "start [flags]",
+			ShortHelp:  "Run the full node",
+		},
+		cfg,
+		func(_ context.Context, args []string) error {
+			return execStart(cfg, args, io)
+		},
+	)
+}
+
+type startCfg struct {
+	init initCfg
+}
+
+func (s startCfg)RegisterFlags(fs *flag.FlagSet) {
+	s.init.RegisterFlags(fs)
+}
+
+func execStart(c *startCfg, args []string, io *commands.IO) error {
+	rootDir := c.init.rootDir
+	logger := log.NewTMLogger(log.NewSyncWriter(io.Out))
+
+	// lazy init
+	if !config.Exists(rootDir) {
+		err := execInit(&c.init, []string{}, io) // XXX: create an helper instead of calling the cmd?
+		if err != nil {
+			return fmt.Errorf("lazy init: %w", err)
+		}
+	}
+
+	// load (existing) config
+	cfg := config.LoadOrMakeDefaultConfig(rootDir)
+	gnoApp, err := gnoland.NewApp(rootDir, c.init.skipFailingGenesisTxs, logger, c.init.genesisMaxVMCycles)
+	if err != nil {
+		return fmt.Errorf("error in creating new app: %w", err)
+	}
+	cfg.LocalApp = gnoApp
+
+	// create node
+	gnoNode, err := node.DefaultNewNode(cfg, logger)
+	if err != nil {
+		return fmt.Errorf("error in creating node: %w", err)
+	}
+
+	// start node
+	fmt.Fprintln(io.Err, "Starting Node...")
+	if err := gnoNode.Start(); err != nil {
+		return fmt.Errorf("error in start node: %w", err)
+	}
+
+	// run forever
+	osm.TrapSignal(func() {
+		if gnoNode.IsRunning() {
+			_ = gnoNode.Stop()
+		}
+	})
+	select {} // run forever
+}

gno.land/cmd/gnoland/root.go

@@ -2,6 +2,7 @@
 
 import (
 	"context"
+
 	"fmt"
 	"os"
 
@@ -24,7 +25,7 @@
 	cmd := commands.NewCommand(
 		commands.Metadata{
 			ShortUsage: "<subcommand> [flags] [<arg>...]",
-			ShortHelp:  "Starts the gnoland blockchain node",
+			ShortHelp:  "Manages the gnoland blockchain node",
 			Options: []ff.Option{
 				ff.WithConfigFileFlag("config"),
 				ff.WithConfigFileParser(fftoml.Parser),
@@ -35,6 +36,7 @@
 	)
 
 	cmd.AddSubCommands(
+		newInitCmd(io),
 		newStartCmd(io),
 	)
 

gno.land/cmd/gnoland/start_test.go

@@ -12,38 +12,27 @@
 	"github.com/stretchr/testify/require"
 )
 
-func TestStartInitialize(t *testing.T) {
-	cases := []struct {
-		args []string
-	}{
-		{[]string{"start", "--skip-start", "--skip-failing-genesis-txs"}},
-		// {[]string{"--skip-start"}},
-		// FIXME: test seems flappy as soon as we have multiple cases.
-	}
+func TestInit(t *testing.T) {
 	os.Chdir(filepath.Join("..", "..")) // go to repo's root dir
 
-	for _, tc := range cases {
-		name := strings.Join(tc.args, " ")
-		t.Run(name, func(t *testing.T) {
-			mockOut := bytes.NewBufferString("")
-			mockErr := bytes.NewBufferString("")
-			io := commands.NewTestIO()
-			io.SetOut(commands.WriteNopCloser(mockOut))
-			io.SetErr(commands.WriteNopCloser(mockErr))
-			cmd := newRootCmd(io)
-
-			t.Logf(`Running "gnoland %s"`, strings.Join(tc.args, " "))
-			err := cmd.ParseAndRun(context.Background(), tc.args)
-			require.NoError(t, err)
-
-			stdout := mockOut.String()
-			stderr := mockErr.String()
-
-			require.Contains(t, stderr, "Node created.", "failed to create node")
-			require.Contains(t, stderr, "'--skip-start' is set. Exiting.", "not exited with skip-start")
-			require.NotContains(t, stdout, "panic:")
-		})
-	}
+
+	mockOut := bytes.NewBufferString("")
+	mockErr := bytes.NewBufferString("")
+	io := commands.NewTestIO()
+	io.SetOut(commands.WriteNopCloser(mockOut))
+	io.SetErr(commands.WriteNopCloser(mockErr))
+	cmd := newRootCmd(io)
+
+	args := []string{"init", "--skip-failing-genesis-txs"}
+	t.Logf(`Running "gnoland %s"`, strings.Join(args, " "))
+	err := cmd.ParseAndRun(context.Background(), args)
+	require.NoError(t, err)
+
+	stdout := mockOut.String()
+	stderr := mockErr.String()
+
+	require.Contains(t, stderr, "Node created.")
+	require.NotContains(t, stdout, "panic:")
 }
 
 // TODO: test various configuration files?