diff --git a/.chloggen/1318-remote-config-service.yaml b/.chloggen/1318-remote-config-service.yaml new file mode 100755 index 0000000000..13fb153bad --- /dev/null +++ b/.chloggen/1318-remote-config-service.yaml @@ -0,0 +1,16 @@ +# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix' +change_type: new_component + +# The name of the component, or a single word describing the area of concern, (e.g. operator, target allocator, github action) +component: Operator OpAMP Bridge + +# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`). +note: Introducing the Operator OpAMP Bridge service, which allows a user to manage OpenTelemetry Collector CRDs via OpAMP + +# One or more tracking issues related to the change +issues: [1318] + +# (Optional) One or more lines of additional information to render under the primary note. +# These lines will be padded with 2 spaces and then inserted directly into the document. +# Use pipe (|) for multiline entries. +subtext: diff --git a/.github/workflows/continuous-integration.yaml b/.github/workflows/continuous-integration.yaml index 18d39f5a55..1ecdd99c68 100644 --- a/.github/workflows/continuous-integration.yaml +++ b/.github/workflows/continuous-integration.yaml @@ -33,7 +33,7 @@ jobs: runs-on: ubuntu-20.04 strategy: matrix: - workdir: [".", "./cmd/otel-allocator"] + workdir: [".", "./cmd/otel-allocator", "./cmd/operator-opamp-bridge"] steps: - name: Set up Go uses: actions/setup-go@v3 diff --git a/.gitignore b/.gitignore index 6b11e10253..88abe862c0 100644 --- a/.gitignore +++ b/.gitignore @@ -7,6 +7,7 @@ *.dylib bin vendor +.DS_Store # Test binary, build with `go test -c` *.test diff --git a/Makefile b/Makefile index 2881a11d79..6c5392e438 100644 --- a/Makefile +++ b/Makefile @@ -21,6 +21,9 @@ BUNDLE_IMG ?= ${IMG_PREFIX}/${IMG_REPO}-bundle:${VERSION} TARGETALLOCATOR_IMG_REPO ?= target-allocator TARGETALLOCATOR_IMG ?= ${IMG_PREFIX}/${TARGETALLOCATOR_IMG_REPO}:$(addprefix v,${VERSION}) +OPERATOROPAMPBRIDGE_IMG_REPO ?= operator-opamp-bridge +OPERATOROPAMPBRIDGE_IMG ?= ${IMG_PREFIX}/${OPERATOROPAMPBRIDGE_IMG_REPO}:$(addprefix v,${VERSION}) + # Options for 'bundle-build' ifneq ($(origin CHANNELS), undefined) BUNDLE_CHANNELS := --channels=$(CHANNELS) @@ -89,6 +92,7 @@ ci: test test: generate fmt vet ensure-generate-is-noop envtest KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(KUBE_VERSION) -p path)" go test ${GOTEST_OPTS} ./... cd cmd/otel-allocator && KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(KUBE_VERSION) -p path)" go test ${GOTEST_OPTS} ./... + cd cmd/operator-opamp-bridge && KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(KUBE_VERSION) -p path)" go test ${GOTEST_OPTS} ./... # Build manager binary .PHONY: manager @@ -152,6 +156,7 @@ vet: lint: golangci-lint run cd cmd/otel-allocator && golangci-lint run + cd cmd/operator-opamp-bridge && golangci-lint run # Generate code .PHONY: generate @@ -174,7 +179,7 @@ e2e-log-operator: kubectl get deploy -A .PHONY: prepare-e2e -prepare-e2e: kuttl set-image-controller container container-target-allocator start-kind cert-manager install-metrics-server install-openshift-routes load-image-all deploy +prepare-e2e: kuttl set-image-controller container container-target-allocator container-operator-opamp-bridge start-kind cert-manager install-metrics-server install-openshift-routes load-image-all deploy TARGETALLOCATOR_IMG=$(TARGETALLOCATOR_IMG) ./hack/modify-test-images.sh .PHONY: scorecard-tests @@ -201,6 +206,10 @@ container-target-allocator-push: container-target-allocator: docker buildx build --load --platform linux/${ARCH} -t ${TARGETALLOCATOR_IMG} cmd/otel-allocator +.PHONY: container-operator-opamp-bridge +container-operator-opamp-bridge: + docker buildx build --platform linux/${ARCH} -t ${OPERATOROPAMPBRIDGE_IMG} cmd/operator-opamp-bridge + .PHONY: start-kind start-kind: ifeq (true,$(START_KIND_CLUSTER)) @@ -216,7 +225,7 @@ install-openshift-routes: ./hack/install-openshift-routes.sh .PHONY: load-image-all -load-image-all: load-image-operator load-image-target-allocator +load-image-all: load-image-operator load-image-target-allocator load-image-operator-opamp-bridge .PHONY: load-image-operator load-image-operator: container @@ -236,6 +245,10 @@ else endif +.PHONY: load-image-operator-opamp-bridge +load-image-operator-opamp-bridge: + kind load docker-image ${OPERATOROPAMPBRIDGE_IMG} + .PHONY: cert-manager cert-manager: cmctl # Consider using cmctl to install the cert-manager once install command is not experimental diff --git a/cmd/operator-opamp-bridge/Dockerfile b/cmd/operator-opamp-bridge/Dockerfile new file mode 100644 index 0000000000..ce62eca286 --- /dev/null +++ b/cmd/operator-opamp-bridge/Dockerfile @@ -0,0 +1,29 @@ +# Build the operator-opamp-bridge binary +FROM golang:1.19-alpine as builder + +WORKDIR /app + +RUN apk --no-cache add ca-certificates + +# Copy go mod and sum files +COPY go.mod go.sum ./ + +RUN go mod download + +COPY . . + +# Build the Go app +RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o main . + +######## Start a new stage from scratch ####### +FROM scratch + +WORKDIR /root/ + +# Copy the certs from the builder +COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt + +# Copy the pre-built binary file from the previous stage +COPY --from=builder /app/main . + +ENTRYPOINT ["./main"] diff --git a/cmd/operator-opamp-bridge/agent/agent.go b/cmd/operator-opamp-bridge/agent/agent.go new file mode 100644 index 0000000000..fb8067d22e --- /dev/null +++ b/cmd/operator-opamp-bridge/agent/agent.go @@ -0,0 +1,295 @@ +// Copyright The OpenTelemetry Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package agent + +import ( + "bytes" + "context" + "time" + + "gopkg.in/yaml.v3" + + "github.com/open-telemetry/opentelemetry-operator/cmd/operator-opamp-bridge/metrics" + "github.com/open-telemetry/opentelemetry-operator/cmd/operator-opamp-bridge/operator" + + "github.com/open-telemetry/opentelemetry-operator/cmd/operator-opamp-bridge/config" + + "github.com/oklog/ulid/v2" + "go.uber.org/multierr" + + "github.com/open-telemetry/opamp-go/client" + "github.com/open-telemetry/opamp-go/client/types" + "github.com/open-telemetry/opamp-go/protobufs" +) + +type Agent struct { + logger types.Logger + + appliedKeys map[collectorKey]bool + startTime uint64 + lastHash []byte + + instanceId ulid.ULID + agentDescription *protobufs.AgentDescription + remoteConfigStatus *protobufs.RemoteConfigStatus + + opampClient client.OpAMPClient + metricReporter *metrics.MetricReporter + config config.Config + applier operator.ConfigApplier + remoteConfigEnabled bool +} + +func NewAgent(logger types.Logger, applier operator.ConfigApplier, config config.Config, opampClient client.OpAMPClient) *Agent { + agent := &Agent{ + config: config, + applier: applier, + logger: logger, + appliedKeys: map[collectorKey]bool{}, + instanceId: config.GetNewInstanceId(), + agentDescription: config.GetDescription(), + remoteConfigEnabled: config.RemoteConfigEnabled(), + opampClient: opampClient, + } + + agent.logger.Debugf("Agent created, id=%v, type=%s, version=%s.", + agent.instanceId.String(), config.GetAgentType(), config.GetAgentVersion()) + + return agent +} + +// TODO: Something should run on a schedule to set the health of the OpAMP client. +func (agent *Agent) getHealth() *protobufs.AgentHealth { + return &protobufs.AgentHealth{ + Healthy: true, + StartTimeUnixNano: agent.startTime, + LastError: "", + } +} + +// onConnect is called when an agent is successfully connected to a server. +func (agent *Agent) onConnect() { + agent.logger.Debugf("Connected to the server.") +} + +// onConnectFailed is called when an agent was unable to connect to a server. +func (agent *Agent) onConnectFailed(err error) { + agent.logger.Errorf("Failed to connect to the server: %v", err) +} + +// onError is called when an agent receives an error response from the server. +func (agent *Agent) onError(err *protobufs.ServerErrorResponse) { + agent.logger.Errorf("Server returned an error response: %v", err.ErrorMessage) +} + +// saveRemoteConfigStatus receives a status from the server when the server sets a remote configuration. +func (agent *Agent) saveRemoteConfigStatus(_ context.Context, status *protobufs.RemoteConfigStatus) { + agent.remoteConfigStatus = status +} + +// Start sets up the callbacks for the OpAMP client and begins the client's connection to the server. +func (agent *Agent) Start() error { + agent.startTime = uint64(time.Now().UnixNano()) + settings := types.StartSettings{ + OpAMPServerURL: agent.config.Endpoint, + InstanceUid: agent.instanceId.String(), + Callbacks: types.CallbacksStruct{ + OnConnectFunc: agent.onConnect, + OnConnectFailedFunc: agent.onConnectFailed, + OnErrorFunc: agent.onError, + SaveRemoteConfigStatusFunc: agent.saveRemoteConfigStatus, + GetEffectiveConfigFunc: agent.getEffectiveConfig, + OnMessageFunc: agent.onMessage, + }, + RemoteConfigStatus: agent.remoteConfigStatus, + PackagesStateProvider: nil, + Capabilities: agent.config.GetCapabilities(), + } + err := agent.opampClient.SetAgentDescription(agent.agentDescription) + if err != nil { + return err + } + err = agent.opampClient.SetHealth(agent.getHealth()) + if err != nil { + return err + } + + agent.logger.Debugf("Starting OpAMP client...") + + err = agent.opampClient.Start(context.Background(), settings) + if err != nil { + return err + } + + agent.logger.Debugf("OpAMP Client started.") + + return nil +} + +// updateAgentIdentity receives a new instanced Id from the remote server and updates the agent's instanceID field. +// The meter will be reinitialized by the onMessage function. +func (agent *Agent) updateAgentIdentity(instanceId ulid.ULID) { + agent.logger.Debugf("Agent identity is being changed from id=%v to id=%v", + agent.instanceId.String(), + instanceId.String()) + agent.instanceId = instanceId +} + +// getEffectiveConfig is called when a remote server needs to learn of the current effective configuration of each +// collector the agent is managing. +func (agent *Agent) getEffectiveConfig(ctx context.Context) (*protobufs.EffectiveConfig, error) { + instances, err := agent.applier.ListInstances() + if err != nil { + agent.logger.Errorf("couldn't list instances", err) + return nil, err + } + instanceMap := map[string]*protobufs.AgentConfigFile{} + for _, instance := range instances { + marshaled, err := yaml.Marshal(instance) + if err != nil { + agent.logger.Errorf("couldn't marshal collector configuration", err) + return nil, err + } + mapKey := newCollectorKey(instance.GetName(), instance.GetNamespace()) + instanceMap[mapKey.String()] = &protobufs.AgentConfigFile{ + Body: marshaled, + ContentType: "yaml", + } + } + return &protobufs.EffectiveConfig{ + ConfigMap: &protobufs.AgentConfigMap{ + ConfigMap: instanceMap, + }, + }, nil +} + +// initMeter initializes a metric reporter instance for the agent to report runtime metrics to the +// configured destination. The settings received will be used to initialize a reporter, shutting down any previously +// running metrics reporting instances. +func (agent *Agent) initMeter(settings *protobufs.TelemetryConnectionSettings) { + reporter, err := metrics.NewMetricReporter(agent.logger, settings, agent.config.GetAgentType(), agent.config.GetAgentVersion(), agent.instanceId) + if err != nil { + agent.logger.Errorf("Cannot collect metrics: %v", err) + return + } + + if agent.metricReporter != nil { + agent.metricReporter.Shutdown() + } + agent.metricReporter = reporter +} + +// applyRemoteConfig receives a remote configuration from a remote server of the following form: +// +// map[name/namespace] -> collector CRD spec +// +// For every key in the received remote configuration, the agent attempts to apply it to the connected +// Kubernetes cluster. If an agent fails to apply a collector CRD, it will continue to the next entry. The agent will +// store the received configuration hash regardless of application status as per the OpAMP spec. +// +// INVARIANT: The caller must verify that config isn't nil _and_ the configuration has changed between calls. +func (agent *Agent) applyRemoteConfig(config *protobufs.AgentRemoteConfig) (*protobufs.RemoteConfigStatus, error) { + var multiErr error + // Apply changes from the received config map + for key, file := range config.Config.GetConfigMap() { + if len(key) == 0 || len(file.Body) == 0 { + continue + } + colKey, err := collectorKeyFromKey(key) + if err != nil { + multiErr = multierr.Append(multiErr, err) + continue + } + err = agent.applier.Apply(colKey.name, colKey.namespace, file) + if err != nil { + multiErr = multierr.Append(multiErr, err) + continue + } + agent.appliedKeys[colKey] = true + } + // Check if anything was deleted + for collectorKey := range agent.appliedKeys { + if _, ok := config.Config.GetConfigMap()[collectorKey.String()]; !ok { + err := agent.applier.Delete(collectorKey.name, collectorKey.namespace) + if err != nil { + multiErr = multierr.Append(multiErr, err) + } + } + } + agent.lastHash = config.GetConfigHash() + if multiErr != nil { + return &protobufs.RemoteConfigStatus{ + LastRemoteConfigHash: agent.lastHash, + Status: protobufs.RemoteConfigStatuses_RemoteConfigStatuses_FAILED, + ErrorMessage: multiErr.Error(), + }, multiErr + } + return &protobufs.RemoteConfigStatus{ + LastRemoteConfigHash: agent.lastHash, + Status: protobufs.RemoteConfigStatuses_RemoteConfigStatuses_APPLIED, + }, nil +} + +// Shutdown will stop the OpAMP client gracefully. +func (agent *Agent) Shutdown() { + agent.logger.Debugf("Agent shutting down...") + if agent.opampClient != nil { + err := agent.opampClient.Stop(context.Background()) + if err != nil { + agent.logger.Errorf(err.Error()) + } + } + if agent.metricReporter != nil { + agent.metricReporter.Shutdown() + } +} + +// onMessage is called when the client receives a new message from the connected OpAMP server. The agent is responsible +// for checking if it should apply a new remote configuration. The agent will also initialize metrics based on the +// settings received from the server. The agent is also able to update its identifier if it needs to. +func (agent *Agent) onMessage(ctx context.Context, msg *types.MessageData) { + // If we received remote configuration, and it's not the same as the previously applied one + if agent.remoteConfigEnabled && msg.RemoteConfig != nil && !bytes.Equal(agent.lastHash, msg.RemoteConfig.GetConfigHash()) { + var err error + status, err := agent.applyRemoteConfig(msg.RemoteConfig) + if err != nil { + agent.logger.Errorf(err.Error()) + } + err = agent.opampClient.SetRemoteConfigStatus(status) + if err != nil { + agent.logger.Errorf(err.Error()) + return + } + err = agent.opampClient.UpdateEffectiveConfig(ctx) + if err != nil { + agent.logger.Errorf(err.Error()) + } + } + + // The instance id is updated prior to the meter initialization so that the new meter will report using the updated + // instanceId. + if msg.AgentIdentification != nil { + newInstanceId, err := ulid.Parse(msg.AgentIdentification.NewInstanceUid) + if err != nil { + agent.logger.Errorf(err.Error()) + return + } + agent.updateAgentIdentity(newInstanceId) + } + + if msg.OwnMetricsConnSettings != nil { + agent.initMeter(msg.OwnMetricsConnSettings) + } +} diff --git a/cmd/operator-opamp-bridge/agent/agent_test.go b/cmd/operator-opamp-bridge/agent/agent_test.go new file mode 100644 index 0000000000..707e5315e1 --- /dev/null +++ b/cmd/operator-opamp-bridge/agent/agent_test.go @@ -0,0 +1,555 @@ +// Copyright The OpenTelemetry Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package agent + +import ( + "context" + "crypto/rand" + "fmt" + "os" + "sort" + "testing" + + "github.com/stretchr/testify/require" + + "github.com/oklog/ulid/v2" + "github.com/open-telemetry/opamp-go/client" + "github.com/open-telemetry/opamp-go/client/types" + "github.com/open-telemetry/opamp-go/protobufs" + "github.com/stretchr/testify/assert" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" + "k8s.io/apimachinery/pkg/runtime" + "sigs.k8s.io/controller-runtime/pkg/client/fake" + logf "sigs.k8s.io/controller-runtime/pkg/log" + + "github.com/open-telemetry/opentelemetry-operator/apis/v1alpha1" + "github.com/open-telemetry/opentelemetry-operator/cmd/operator-opamp-bridge/config" + "github.com/open-telemetry/opentelemetry-operator/cmd/operator-opamp-bridge/logger" + "github.com/open-telemetry/opentelemetry-operator/cmd/operator-opamp-bridge/operator" +) + +var ( + l = logf.Log.WithName("agent-tests") + clientLogger = logger.NewLogger(&l) + _ client.OpAMPClient = &mockOpampClient{} +) + +type mockOpampClient struct { + lastStatus *protobufs.RemoteConfigStatus + lastEffectiveConfig *protobufs.EffectiveConfig + settings types.StartSettings +} + +func (m *mockOpampClient) Start(ctx context.Context, settings types.StartSettings) error { + m.settings = settings + return nil +} + +func (m *mockOpampClient) Stop(ctx context.Context) error { + return nil +} + +func (m *mockOpampClient) SetAgentDescription(descr *protobufs.AgentDescription) error { + return nil +} + +func (m *mockOpampClient) AgentDescription() *protobufs.AgentDescription { + return nil +} + +func (m *mockOpampClient) SetHealth(health *protobufs.AgentHealth) error { + return nil +} + +func (m *mockOpampClient) UpdateEffectiveConfig(ctx context.Context) error { + effectiveConfig, err := m.settings.Callbacks.GetEffectiveConfig(ctx) + if err != nil { + return err + } + m.lastEffectiveConfig = effectiveConfig + return nil +} + +func (m *mockOpampClient) SetRemoteConfigStatus(status *protobufs.RemoteConfigStatus) error { + m.lastStatus = status + return nil +} + +func (m *mockOpampClient) SetPackageStatuses(statuses *protobufs.PackageStatuses) error { + return nil +} + +func getFakeApplier(t *testing.T, conf config.Config) *operator.Client { + schemeBuilder := runtime.NewSchemeBuilder(func(s *runtime.Scheme) error { + s.AddKnownTypes(v1alpha1.GroupVersion, &v1alpha1.OpenTelemetryCollector{}, &v1alpha1.OpenTelemetryCollectorList{}) + metav1.AddToGroupVersion(s, v1alpha1.GroupVersion) + return nil + }) + scheme := runtime.NewScheme() + err := schemeBuilder.AddToScheme(scheme) + require.NoError(t, err, "Should be able to add custom types") + c := fake.NewClientBuilder().WithScheme(scheme) + return operator.NewClient(l, c.Build(), conf.GetComponentsAllowed()) +} + +func TestAgent_onMessage(t *testing.T) { + type fields struct { + configFile string + } + type args struct { + ctx context.Context + // Mapping from name/namespace to a config in testdata + configFile map[string]string + // Mapping from name/namespace to a config in testdata (for testing updates) + nextConfigFile map[string]string + } + type want struct { + // Mapping from name/namespace to a list of expected contents + contents map[string][]string + // Mapping from name/namespace to a list of updated expected contents + nextContents map[string][]string + // The status after the initial config loading + status *protobufs.RemoteConfigStatus + // The status after the updated config loading + nextStatus *protobufs.RemoteConfigStatus + } + tests := []struct { + name string + fields fields + args args + want want + }{ + { + name: "no data", + fields: fields{ + configFile: "testdata/agent.yaml", + }, + args: args{ + ctx: context.Background(), + configFile: nil, + }, + want: want{ + contents: map[string][]string{}, + status: nil, + }, + }, + { + name: "base case", + fields: fields{ + configFile: "testdata/agent.yaml", + }, + args: args{ + ctx: context.Background(), + configFile: map[string]string{ + "good/testnamespace": "basic.yaml", + }, + }, + want: want{ + contents: map[string][]string{ + "good/testnamespace": { + "kind: OpenTelemetryCollector", + "name: good", + "namespace: testnamespace", + "send_batch_size: 10000", + "receivers: [otlp]", + "status:", + }, + }, + status: &protobufs.RemoteConfigStatus{ + LastRemoteConfigHash: []byte("good/testnamespace405"), + Status: protobufs.RemoteConfigStatuses_RemoteConfigStatuses_APPLIED, + }, + }, + }, + { + name: "failure", + fields: fields{ + configFile: "testdata/agent.yaml", + }, + args: args{ + ctx: context.Background(), + configFile: map[string]string{ + "bad/testnamespace": "invalid.yaml", + }, + }, + want: want{ + contents: nil, + status: &protobufs.RemoteConfigStatus{ + LastRemoteConfigHash: []byte("bad/testnamespace408"), + Status: protobufs.RemoteConfigStatuses_RemoteConfigStatuses_FAILED, + ErrorMessage: "yaml: line 16: could not find expected ':'", + }, + }, + }, + { + name: "all components are allowed", + fields: fields{ + configFile: "testdata/agentbasiccomponentsallowed.yaml", + }, + args: args{ + ctx: context.Background(), + configFile: map[string]string{ + "good/testnamespace": "basic.yaml", + }, + }, + want: want{ + contents: map[string][]string{ + "good/testnamespace": { + "kind: OpenTelemetryCollector", + "name: good", + "namespace: testnamespace", + "send_batch_size: 10000", + "receivers: [otlp]", + "status:", + }, + }, + status: &protobufs.RemoteConfigStatus{ + LastRemoteConfigHash: []byte("good/testnamespace405"), + Status: protobufs.RemoteConfigStatuses_RemoteConfigStatuses_APPLIED, + }, + }, + }, + { + name: "batch not allowed", + fields: fields{ + configFile: "testdata/agentbatchnotallowed.yaml", + }, + args: args{ + ctx: context.Background(), + configFile: map[string]string{ + "good/testnamespace": "basic.yaml", + }, + }, + want: want{ + contents: nil, + status: &protobufs.RemoteConfigStatus{ + LastRemoteConfigHash: []byte("good/testnamespace405"), + Status: protobufs.RemoteConfigStatuses_RemoteConfigStatuses_FAILED, + ErrorMessage: "Items in config are not allowed: [processors.batch]", + }, + }, + }, + { + name: "processors not allowed", + fields: fields{ + configFile: "testdata/agentnoprocessorsallowed.yaml", + }, + args: args{ + ctx: context.Background(), + configFile: map[string]string{ + "good/testnamespace": "basic.yaml", + }, + }, + want: want{ + contents: nil, + status: &protobufs.RemoteConfigStatus{ + LastRemoteConfigHash: []byte("good/testnamespace405"), + Status: protobufs.RemoteConfigStatuses_RemoteConfigStatuses_FAILED, + ErrorMessage: "Items in config are not allowed: [processors]", + }, + }, + }, + { + name: "can update config and replicas", + fields: fields{ + configFile: "testdata/agent.yaml", + }, + args: args{ + ctx: context.Background(), + configFile: map[string]string{ + "good/testnamespace": "basic.yaml", + }, + nextConfigFile: map[string]string{ + "good/testnamespace": "updated.yaml", + }, + }, + want: want{ + contents: map[string][]string{ + "good/testnamespace": { + "kind: OpenTelemetryCollector", + "name: good", + "namespace: testnamespace", + "send_batch_size: 10000", + "processors: []", + "replicas: 1", + "status:", + }, + }, + status: &protobufs.RemoteConfigStatus{ + LastRemoteConfigHash: []byte("good/testnamespace405"), + Status: protobufs.RemoteConfigStatuses_RemoteConfigStatuses_APPLIED, + }, + nextContents: map[string][]string{ + "good/testnamespace": { + "kind: OpenTelemetryCollector", + "name: good", + "namespace: testnamespace", + "send_batch_size: 10000", + "processors: [memory_limiter, batch]", + "replicas: 3", + "status:", + }, + }, + nextStatus: &protobufs.RemoteConfigStatus{ + LastRemoteConfigHash: []byte("good/testnamespace439"), + Status: protobufs.RemoteConfigStatuses_RemoteConfigStatuses_APPLIED, + }, + }, + }, + { + name: "cannot update with bad config", + fields: fields{ + configFile: "testdata/agent.yaml", + }, + args: args{ + ctx: context.Background(), + configFile: map[string]string{ + "good/testnamespace": "basic.yaml", + }, + nextConfigFile: map[string]string{ + "good/testnamespace": "invalid.yaml", + }, + }, + want: want{ + contents: map[string][]string{ + "good/testnamespace": { + "kind: OpenTelemetryCollector", + "name: good", + "namespace: testnamespace", + "send_batch_size: 10000", + "processors: []", + "replicas: 1", + "status:", + }, + }, + status: &protobufs.RemoteConfigStatus{ + LastRemoteConfigHash: []byte("good/testnamespace405"), + Status: protobufs.RemoteConfigStatuses_RemoteConfigStatuses_APPLIED, + }, + nextContents: map[string][]string{ + "good/testnamespace": { + "kind: OpenTelemetryCollector", + "name: good", + "namespace: testnamespace", + "send_batch_size: 10000", + "processors: []", + "replicas: 1", + "status:", + }, + }, + nextStatus: &protobufs.RemoteConfigStatus{ + LastRemoteConfigHash: []byte("good/testnamespace408"), // The new hash should be of the bad config + Status: protobufs.RemoteConfigStatuses_RemoteConfigStatuses_FAILED, + ErrorMessage: "yaml: line 16: could not find expected ':'", + }, + }, + }, + { + name: "update with new collector", + fields: fields{ + configFile: "testdata/agent.yaml", + }, + args: args{ + ctx: context.Background(), + configFile: map[string]string{ + "good/testnamespace": "basic.yaml", + }, + nextConfigFile: map[string]string{ + "good/testnamespace": "basic.yaml", + "other/testnamespace": "updated.yaml", + }, + }, + want: want{ + contents: map[string][]string{ + "good/testnamespace": { + "kind: OpenTelemetryCollector", + "name: good", + "namespace: testnamespace", + "send_batch_size: 10000", + "processors: []", + "status:", + }, + }, + status: &protobufs.RemoteConfigStatus{ + LastRemoteConfigHash: []byte("good/testnamespace405"), + Status: protobufs.RemoteConfigStatuses_RemoteConfigStatuses_APPLIED, + }, + nextContents: map[string][]string{ + "good/testnamespace": { + "kind: OpenTelemetryCollector", + "name: good", + "namespace: testnamespace", + "send_batch_size: 10000", + "processors: []", + "status:", + }, + "other/testnamespace": { + "kind: OpenTelemetryCollector", + "name: other", + "namespace: testnamespace", + "send_batch_size: 10000", + "processors: [memory_limiter, batch]", + "status:", + }, + }, + nextStatus: &protobufs.RemoteConfigStatus{ + LastRemoteConfigHash: []byte("good/testnamespace405other/testnamespace439"), + Status: protobufs.RemoteConfigStatuses_RemoteConfigStatuses_APPLIED, + }, + }, + }, + { + name: "can delete existing collector", + fields: fields{ + configFile: "testdata/agent.yaml", + }, + args: args{ + ctx: context.Background(), + configFile: map[string]string{ + "good/testnamespace": "basic.yaml", + }, + nextConfigFile: map[string]string{}, + }, + want: want{ + contents: map[string][]string{ + "good/testnamespace": { + "kind: OpenTelemetryCollector", + "name: good", + "namespace: testnamespace", + "send_batch_size: 10000", + "processors: []", + "status:", + }, + }, + status: &protobufs.RemoteConfigStatus{ + LastRemoteConfigHash: []byte("good/testnamespace405"), + Status: protobufs.RemoteConfigStatuses_RemoteConfigStatuses_APPLIED, + }, + nextContents: map[string][]string{}, + nextStatus: &protobufs.RemoteConfigStatus{ + LastRemoteConfigHash: []byte(""), + Status: protobufs.RemoteConfigStatuses_RemoteConfigStatuses_APPLIED, + }, + }, + }, + } + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + mockClient := &mockOpampClient{} + conf, err := config.Load(tt.fields.configFile) + require.NoError(t, err, "should be able to load config") + applier := getFakeApplier(t, conf) + agent := NewAgent(clientLogger, applier, conf, mockClient) + err = agent.Start() + defer agent.Shutdown() + require.NoError(t, err, "should be able to start agent") + data, err := getMessageDataFromConfigFile(tt.args.configFile) + require.NoError(t, err, "should be able to load data") + agent.onMessage(tt.args.ctx, data) + effectiveConfig, err := agent.getEffectiveConfig(tt.args.ctx) + require.NoError(t, err, "should be able to get effective config") + if tt.args.configFile != nil { + // We should only expect this to happen if we supply configuration + assert.Equal(t, effectiveConfig, mockClient.lastEffectiveConfig, "client's config should be updated") + } + assert.NotNilf(t, effectiveConfig.ConfigMap.GetConfigMap(), "configmap should have data") + for colNameNamespace, expectedContents := range tt.want.contents { + assert.Contains(t, effectiveConfig.ConfigMap.GetConfigMap(), colNameNamespace) + for _, content := range expectedContents { + asString := string(effectiveConfig.ConfigMap.GetConfigMap()[colNameNamespace].GetBody()) + assert.Contains(t, asString, content) + } + } + assert.Equal(t, tt.want.status, mockClient.lastStatus) + if tt.args.nextConfigFile == nil { + // Nothing left to do! + return + } + nextData, err := getMessageDataFromConfigFile(tt.args.nextConfigFile) + require.NoError(t, err, "should be able to load updated data") + agent.onMessage(tt.args.ctx, nextData) + nextEffectiveConfig, err := agent.getEffectiveConfig(tt.args.ctx) + require.NoError(t, err, "should be able to get updated effective config") + assert.Equal(t, nextEffectiveConfig, mockClient.lastEffectiveConfig, "client's config should be updated") + assert.NotNilf(t, nextEffectiveConfig.ConfigMap.GetConfigMap(), "configmap should have updated data") + for colNameNamespace, expectedContents := range tt.want.nextContents { + assert.Contains(t, nextEffectiveConfig.ConfigMap.GetConfigMap(), colNameNamespace) + for _, content := range expectedContents { + asString := string(nextEffectiveConfig.ConfigMap.GetConfigMap()[colNameNamespace].GetBody()) + assert.Contains(t, asString, content) + } + } + assert.Equal(t, tt.want.nextStatus, mockClient.lastStatus) + }) + } +} + +func Test_CanUpdateIdentity(t *testing.T) { + mockClient := &mockOpampClient{} + conf, err := config.Load("testdata/agent.yaml") + require.NoError(t, err, "should be able to load config") + applier := getFakeApplier(t, conf) + agent := NewAgent(clientLogger, applier, conf, mockClient) + err = agent.Start() + defer agent.Shutdown() + require.NoError(t, err, "should be able to start agent") + previousInstanceId := agent.instanceId.String() + entropy := ulid.Monotonic(rand.Reader, 0) + newId := ulid.MustNew(ulid.MaxTime(), entropy) + agent.onMessage(context.Background(), &types.MessageData{ + AgentIdentification: &protobufs.AgentIdentification{ + NewInstanceUid: newId.String(), + }, + }) + assert.NotEqual(t, previousInstanceId, newId.String()) + assert.Equal(t, agent.instanceId, newId) +} + +func getMessageDataFromConfigFile(filemap map[string]string) (*types.MessageData, error) { + toReturn := &types.MessageData{} + if filemap == nil { + return toReturn, nil + } + configs := map[string]*protobufs.AgentConfigFile{} + hash := "" + fileNames := make([]string, len(filemap)) + i := 0 + for k := range filemap { + fileNames[i] = k + i++ + } + // We sort the filenames so we get consistent results for multiple file loads + sort.Strings(fileNames) + + for _, key := range fileNames { + yamlFile, err := os.ReadFile(fmt.Sprintf("testdata/%s", filemap[key])) + if err != nil { + return toReturn, err + } + configs[key] = &protobufs.AgentConfigFile{ + Body: yamlFile, + ContentType: "yaml", + } + hash = hash + key + fmt.Sprint(len(yamlFile)) + } + toReturn.RemoteConfig = &protobufs.AgentRemoteConfig{ + Config: &protobufs.AgentConfigMap{ + ConfigMap: configs, + }, + // just use the file name for the hash + ConfigHash: []byte(hash), + } + return toReturn, nil +} diff --git a/cmd/operator-opamp-bridge/agent/collector_key.go b/cmd/operator-opamp-bridge/agent/collector_key.go new file mode 100644 index 0000000000..f1353d3472 --- /dev/null +++ b/cmd/operator-opamp-bridge/agent/collector_key.go @@ -0,0 +1,43 @@ +// Copyright The OpenTelemetry Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package agent + +import ( + "errors" + "fmt" + "strings" +) + +type collectorKey struct { + name string + namespace string +} + +func newCollectorKey(name string, namespace string) collectorKey { + return collectorKey{name: name, namespace: namespace} +} + +func collectorKeyFromKey(key string) (collectorKey, error) { + s := strings.Split(key, "/") + // We expect map keys to be of the form name/namespace + if len(s) != 2 { + return collectorKey{}, errors.New("invalid key") + } + return newCollectorKey(s[0], s[1]), nil +} + +func (k collectorKey) String() string { + return fmt.Sprintf("%s/%s", k.name, k.namespace) +} diff --git a/cmd/operator-opamp-bridge/agent/collector_key_test.go b/cmd/operator-opamp-bridge/agent/collector_key_test.go new file mode 100644 index 0000000000..b0b2546485 --- /dev/null +++ b/cmd/operator-opamp-bridge/agent/collector_key_test.go @@ -0,0 +1,98 @@ +// Copyright The OpenTelemetry Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package agent + +import ( + "fmt" + "testing" + + "github.com/stretchr/testify/assert" +) + +func Test_collectorKeyFromKey(t *testing.T) { + type args struct { + key string + } + tests := []struct { + name string + args args + want collectorKey + wantErr assert.ErrorAssertionFunc + }{ + { + name: "base case", + args: args{ + key: "good/namespace", + }, + want: collectorKey{ + name: "good", + namespace: "namespace", + }, + wantErr: assert.NoError, + }, + { + name: "unable to get key", + args: args{ + key: "badnamespace", + }, + want: collectorKey{}, + wantErr: assert.Error, + }, + { + name: "too many slashes", + args: args{ + key: "too/many/slashes", + }, + want: collectorKey{}, + wantErr: assert.Error, + }, + } + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + got, err := collectorKeyFromKey(tt.args.key) + if !tt.wantErr(t, err, fmt.Sprintf("collectorKeyFromKey(%v)", tt.args.key)) { + return + } + assert.Equalf(t, tt.want, got, "collectorKeyFromKey(%v)", tt.args.key) + }) + } +} + +func Test_collectorKey_String(t *testing.T) { + type fields struct { + name string + namespace string + } + tests := []struct { + name string + fields fields + want string + }{ + { + name: "can make a key", + fields: fields{ + name: "good", + namespace: "namespace", + }, + want: "good/namespace", + }, + } + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + k := newCollectorKey(tt.fields.name, tt.fields.namespace) + assert.Equalf(t, tt.want, k.String(), "String()") + }) + } +} diff --git a/cmd/operator-opamp-bridge/agent/testdata/agent.yaml b/cmd/operator-opamp-bridge/agent/testdata/agent.yaml new file mode 100644 index 0000000000..b03015cefd --- /dev/null +++ b/cmd/operator-opamp-bridge/agent/testdata/agent.yaml @@ -0,0 +1,15 @@ +endpoint: ws://127.0.0.1:4320/v1/opamp +protocol: wss +capabilities: + - AcceptsRemoteConfig + - ReportsEffectiveConfig + # - AcceptsPackages + # - ReportsPackageStatuses + - ReportsOwnTraces + - ReportsOwnMetrics + - ReportsOwnLogs + - AcceptsOpAMPConnectionSettings + - AcceptsOtherConnectionSettings + - AcceptsRestartCommand + - ReportsHealth + - ReportsRemoteConfig diff --git a/cmd/operator-opamp-bridge/agent/testdata/agentbasiccomponentsallowed.yaml b/cmd/operator-opamp-bridge/agent/testdata/agentbasiccomponentsallowed.yaml new file mode 100644 index 0000000000..b98d517b1c --- /dev/null +++ b/cmd/operator-opamp-bridge/agent/testdata/agentbasiccomponentsallowed.yaml @@ -0,0 +1,23 @@ +endpoint: ws://127.0.0.1:4320/v1/opamp +protocol: wss +capabilities: + - AcceptsRemoteConfig + - ReportsEffectiveConfig + # - AcceptsPackages + # - ReportsPackageStatuses + - ReportsOwnTraces + - ReportsOwnMetrics + - ReportsOwnLogs + - AcceptsOpAMPConnectionSettings + - AcceptsOtherConnectionSettings + - AcceptsRestartCommand + - ReportsHealth + - ReportsRemoteConfig +components_allowed: + receivers: + - otlp + processors: + - memory_limiter + - batch + exporters: + - logging diff --git a/cmd/operator-opamp-bridge/agent/testdata/agentbatchnotallowed.yaml b/cmd/operator-opamp-bridge/agent/testdata/agentbatchnotallowed.yaml new file mode 100644 index 0000000000..2369aa80b2 --- /dev/null +++ b/cmd/operator-opamp-bridge/agent/testdata/agentbatchnotallowed.yaml @@ -0,0 +1,22 @@ +endpoint: ws://127.0.0.1:4320/v1/opamp +protocol: wss +capabilities: + - AcceptsRemoteConfig + - ReportsEffectiveConfig + # - AcceptsPackages + # - ReportsPackageStatuses + - ReportsOwnTraces + - ReportsOwnMetrics + - ReportsOwnLogs + - AcceptsOpAMPConnectionSettings + - AcceptsOtherConnectionSettings + - AcceptsRestartCommand + - ReportsHealth + - ReportsRemoteConfig +components_allowed: + receivers: + - otlp + processors: + - memory_limiter + exporters: + - logging diff --git a/cmd/operator-opamp-bridge/agent/testdata/agentnoprocessorsallowed.yaml b/cmd/operator-opamp-bridge/agent/testdata/agentnoprocessorsallowed.yaml new file mode 100644 index 0000000000..625f6b11e4 --- /dev/null +++ b/cmd/operator-opamp-bridge/agent/testdata/agentnoprocessorsallowed.yaml @@ -0,0 +1,20 @@ +endpoint: ws://127.0.0.1:4320/v1/opamp +protocol: wss +capabilities: + - AcceptsRemoteConfig + - ReportsEffectiveConfig + # - AcceptsPackages + # - ReportsPackageStatuses + - ReportsOwnTraces + - ReportsOwnMetrics + - ReportsOwnLogs + - AcceptsOpAMPConnectionSettings + - AcceptsOtherConnectionSettings + - AcceptsRestartCommand + - ReportsHealth + - ReportsRemoteConfig +components_allowed: + receivers: + - otlp + exporters: + - logging diff --git a/cmd/operator-opamp-bridge/agent/testdata/basic.yaml b/cmd/operator-opamp-bridge/agent/testdata/basic.yaml new file mode 100644 index 0000000000..1e808b1981 --- /dev/null +++ b/cmd/operator-opamp-bridge/agent/testdata/basic.yaml @@ -0,0 +1,24 @@ +config: | + receivers: + otlp: + protocols: + grpc: + http: + processors: + memory_limiter: + check_interval: 1s + limit_percentage: 75 + spike_limit_percentage: 15 + batch: + send_batch_size: 10000 + timeout: 10s + + exporters: + logging: + + service: + pipelines: + traces: + receivers: [otlp] + processors: [] + exporters: [logging] \ No newline at end of file diff --git a/cmd/operator-opamp-bridge/agent/testdata/invalid.yaml b/cmd/operator-opamp-bridge/agent/testdata/invalid.yaml new file mode 100644 index 0000000000..3d8c6c93ed --- /dev/null +++ b/cmd/operator-opamp-bridge/agent/testdata/invalid.yaml @@ -0,0 +1,24 @@ +config: | + receivers: + otlp: + protocols: + grpc: + http: + processors: + memory_limiter: + check_interval: 1s + limit_percentage: 75 + spike_limit_percentage: 15 + batch: + send_batch_size: 10000 + timeout: 10s + +GARBAGE + exporters: + logging: + service: + pipelines: + traces: + receivers: [otlp] + processors: [] + exporters: [logging] \ No newline at end of file diff --git a/cmd/operator-opamp-bridge/agent/testdata/updated.yaml b/cmd/operator-opamp-bridge/agent/testdata/updated.yaml new file mode 100644 index 0000000000..12eee6c3a0 --- /dev/null +++ b/cmd/operator-opamp-bridge/agent/testdata/updated.yaml @@ -0,0 +1,25 @@ +config: | + receivers: + otlp: + protocols: + grpc: + http: + processors: + memory_limiter: + check_interval: 1s + limit_percentage: 75 + spike_limit_percentage: 15 + batch: + send_batch_size: 10000 + timeout: 10s + + exporters: + logging: + + service: + pipelines: + traces: + receivers: [otlp] + processors: [memory_limiter, batch] + exporters: [logging] +replicas: 3 diff --git a/cmd/operator-opamp-bridge/config/cli.go b/cmd/operator-opamp-bridge/config/cli.go new file mode 100644 index 0000000000..06a782a0c0 --- /dev/null +++ b/cmd/operator-opamp-bridge/config/cli.go @@ -0,0 +1,101 @@ +// Copyright The OpenTelemetry Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package config + +import ( + "errors" + "flag" + "io/fs" + "path/filepath" + + "github.com/go-logr/logr" + "github.com/spf13/pflag" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" + "k8s.io/apimachinery/pkg/runtime" + "k8s.io/client-go/kubernetes/scheme" + "k8s.io/client-go/rest" + "k8s.io/client-go/tools/clientcmd" + "k8s.io/client-go/util/homedir" + "k8s.io/klog/v2" + "sigs.k8s.io/controller-runtime/pkg/client" + "sigs.k8s.io/controller-runtime/pkg/log/zap" + + "github.com/open-telemetry/opentelemetry-operator/apis/v1alpha1" +) + +var ( + schemeBuilder = runtime.NewSchemeBuilder(registerKnownTypes) +) + +func registerKnownTypes(s *runtime.Scheme) error { + s.AddKnownTypes(v1alpha1.GroupVersion, &v1alpha1.OpenTelemetryCollector{}, &v1alpha1.OpenTelemetryCollectorList{}) + metav1.AddToGroupVersion(s, v1alpha1.GroupVersion) + return nil +} + +type CLIConfig struct { + ListenAddr *string + ConfigFilePath *string + + ClusterConfig *rest.Config + // KubeConfigFilePath empty if in cluster configuration is in use + KubeConfigFilePath string + RootLogger logr.Logger +} + +func GetLogger() logr.Logger { + opts := zap.Options{} + opts.BindFlags(flag.CommandLine) + + return zap.New(zap.UseFlagOptions(&opts)) +} + +func ParseCLI(logger logr.Logger) (CLIConfig, error) { + cLIConf := CLIConfig{ + RootLogger: logger, + ListenAddr: pflag.String("listen-addr", ":8080", "The address where this service serves."), + ConfigFilePath: pflag.String("config-file", defaultConfigFilePath, "The path to the config file."), + } + kubeconfigPath := pflag.String("kubeconfig-path", filepath.Join(homedir.HomeDir(), ".kube", "config"), "absolute path to the KubeconfigPath file") + pflag.Parse() + + klog.SetLogger(logger) + + clusterConfig, err := clientcmd.BuildConfigFromFlags("", *kubeconfigPath) + cLIConf.KubeConfigFilePath = *kubeconfigPath + if err != nil { + pathError := &fs.PathError{} + if ok := errors.As(err, &pathError); !ok { + return CLIConfig{}, err + } + clusterConfig, err = rest.InClusterConfig() + if err != nil { + return CLIConfig{}, err + } + cLIConf.KubeConfigFilePath = "" // reset as we use in cluster configuration + } + cLIConf.ClusterConfig = clusterConfig + return cLIConf, nil +} + +func (cli CLIConfig) GetKubernetesClient() (client.Client, error) { + err := schemeBuilder.AddToScheme(scheme.Scheme) + if err != nil { + return nil, err + } + return client.New(cli.ClusterConfig, client.Options{ + Scheme: scheme.Scheme, + }) +} diff --git a/cmd/operator-opamp-bridge/config/config.go b/cmd/operator-opamp-bridge/config/config.go new file mode 100644 index 0000000000..706ff09e00 --- /dev/null +++ b/cmd/operator-opamp-bridge/config/config.go @@ -0,0 +1,142 @@ +// Copyright The OpenTelemetry Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package config + +import ( + "crypto/rand" + "fmt" + "os" + "runtime" + "time" + + "github.com/oklog/ulid/v2" + "github.com/open-telemetry/opamp-go/client" + "github.com/open-telemetry/opamp-go/protobufs" + "gopkg.in/yaml.v2" + + "github.com/open-telemetry/opentelemetry-operator/cmd/operator-opamp-bridge/logger" +) + +const ( + agentType = "io.opentelemetry.operator-opamp-bridge" + defaultConfigFilePath = "/conf/remoteconfiguration.yaml" +) + +var ( + agentVersion = os.Getenv("OPAMP_VERSION") + hostname, _ = os.Hostname() +) + +type Config struct { + Endpoint string `yaml:"endpoint"` + Protocol string `yaml:"protocol"` + Capabilities []string `yaml:"capabilities"` + + // ComponentsAllowed is a list of allowed OpenTelemetry components for each pipeline type (receiver, processor, etc.) + ComponentsAllowed map[string][]string `yaml:"components_allowed,omitempty"` +} + +func (c *Config) CreateClient(logger *logger.Logger) client.OpAMPClient { + if c.Protocol == "http" { + return client.NewHTTP(logger) + } + return client.NewWebSocket(logger) +} + +func (c *Config) GetComponentsAllowed() map[string]map[string]bool { + m := make(map[string]map[string]bool) + for component, componentSet := range c.ComponentsAllowed { + if _, ok := m[component]; !ok { + m[component] = make(map[string]bool) + } + for _, s := range componentSet { + m[component][s] = true + } + } + return m +} + +func (c *Config) GetCapabilities() protobufs.AgentCapabilities { + var capabilities int32 + for _, capability := range c.Capabilities { + // This is a helper so that we don't force consumers to prefix every agent capability + formatted := fmt.Sprintf("AgentCapabilities_%s", capability) + if v, ok := protobufs.AgentCapabilities_value[formatted]; ok { + capabilities = v | capabilities + } + } + return protobufs.AgentCapabilities(capabilities) +} + +func (c *Config) GetAgentType() string { + return agentType +} + +func (c *Config) GetAgentVersion() string { + return agentVersion +} + +func (c *Config) GetDescription() *protobufs.AgentDescription { + return &protobufs.AgentDescription{ + IdentifyingAttributes: []*protobufs.KeyValue{ + keyValuePair("service.name", c.GetAgentType()), + keyValuePair("service.version", c.GetAgentVersion()), + }, + NonIdentifyingAttributes: []*protobufs.KeyValue{ + keyValuePair("os.family", runtime.GOOS), + keyValuePair("host.name", hostname), + }, + } +} + +func keyValuePair(key string, value string) *protobufs.KeyValue { + return &protobufs.KeyValue{ + Key: key, + Value: &protobufs.AnyValue{ + Value: &protobufs.AnyValue_StringValue{ + StringValue: value, + }, + }, + } +} + +func (c *Config) GetNewInstanceId() ulid.ULID { + entropy := ulid.Monotonic(rand.Reader, 0) + return ulid.MustNew(ulid.Timestamp(time.Now()), entropy) +} + +func (c *Config) RemoteConfigEnabled() bool { + capabilities := c.GetCapabilities() + return capabilities&protobufs.AgentCapabilities_AgentCapabilities_AcceptsRemoteConfig != 0 +} + +func Load(file string) (Config, error) { + var cfg Config + if err := unmarshal(&cfg, file); err != nil { + return Config{}, err + } + return cfg, nil +} + +func unmarshal(cfg *Config, configFile string) error { + yamlFile, err := os.ReadFile(configFile) + if err != nil { + return err + } + if err = yaml.UnmarshalStrict(yamlFile, cfg); err != nil { + return fmt.Errorf("error unmarshaling YAML: %w", err) + } + return nil +} diff --git a/cmd/operator-opamp-bridge/go.mod b/cmd/operator-opamp-bridge/go.mod new file mode 100644 index 0000000000..0b4927c834 --- /dev/null +++ b/cmd/operator-opamp-bridge/go.mod @@ -0,0 +1,94 @@ +module github.com/open-telemetry/opentelemetry-operator/cmd/operator-opamp-bridge + +go 1.19 + +require ( + github.com/go-logr/logr v1.2.3 + github.com/oklog/ulid/v2 v2.0.2 + github.com/open-telemetry/opamp-go v0.5.0 + github.com/open-telemetry/opentelemetry-operator v1.51.0 + github.com/shirou/gopsutil v3.21.11+incompatible + github.com/spf13/pflag v1.0.5 + github.com/stretchr/testify v1.8.1 + go.opentelemetry.io/otel v1.11.2 + go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v0.34.0 + go.opentelemetry.io/otel/metric v0.34.0 + go.opentelemetry.io/otel/sdk v1.11.2 + go.opentelemetry.io/otel/sdk/metric v0.34.0 + go.uber.org/multierr v1.6.0 + gopkg.in/yaml.v2 v2.4.0 + gopkg.in/yaml.v3 v3.0.1 + k8s.io/apimachinery v0.26.0 + k8s.io/client-go v0.26.0 + k8s.io/klog/v2 v2.80.1 + sigs.k8s.io/controller-runtime v0.14.0 +) + +require ( + github.com/beorn7/perks v1.0.1 // indirect + github.com/cenkalti/backoff/v4 v4.2.0 // indirect + github.com/cespare/xxhash/v2 v2.1.2 // indirect + github.com/davecgh/go-spew v1.1.1 // indirect + github.com/emicklei/go-restful/v3 v3.9.0 // indirect + github.com/evanphx/json-patch v4.12.0+incompatible // indirect + github.com/evanphx/json-patch/v5 v5.6.0 // indirect + github.com/fsnotify/fsnotify v1.6.0 // indirect + github.com/go-logr/stdr v1.2.2 // indirect + github.com/go-logr/zapr v1.2.3 // indirect + github.com/go-ole/go-ole v1.2.6 // indirect + github.com/go-openapi/jsonpointer v0.19.5 // indirect + github.com/go-openapi/jsonreference v0.20.0 // indirect + github.com/go-openapi/swag v0.19.14 // indirect + github.com/gogo/protobuf v1.3.2 // indirect + github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect + github.com/golang/protobuf v1.5.2 // indirect + github.com/google/gnostic v0.5.7-v3refs // indirect + github.com/google/go-cmp v0.5.9 // indirect + github.com/google/gofuzz v1.1.0 // indirect + github.com/google/uuid v1.1.2 // indirect + github.com/gorilla/websocket v1.4.2 // indirect + github.com/grpc-ecosystem/grpc-gateway/v2 v2.7.0 // indirect + github.com/imdario/mergo v0.3.12 // indirect + github.com/josharian/intern v1.0.0 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/mailru/easyjson v0.7.6 // indirect + github.com/matttproud/golang_protobuf_extensions v1.0.2 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.2 // indirect + github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect + github.com/pkg/errors v0.9.1 // indirect + github.com/pmezard/go-difflib v1.0.0 // indirect + github.com/prometheus/client_golang v1.14.0 // indirect + github.com/prometheus/client_model v0.3.0 // indirect + github.com/prometheus/common v0.37.0 // indirect + github.com/prometheus/procfs v0.8.0 // indirect + github.com/tklauser/go-sysconf v0.3.11 // indirect + github.com/tklauser/numcpus v0.6.0 // indirect + github.com/yusufpapurcu/wmi v1.2.2 // indirect + go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.11.2 // indirect + go.opentelemetry.io/otel/exporters/otlp/otlpmetric v0.34.0 // indirect + go.opentelemetry.io/otel/trace v1.11.2 // indirect + go.opentelemetry.io/proto/otlp v0.19.0 // indirect + go.uber.org/atomic v1.8.0 // indirect + go.uber.org/zap v1.24.0 // indirect + golang.org/x/net v0.3.1-0.20221206200815-1e63c2f08a10 // indirect + golang.org/x/oauth2 v0.0.0-20220223155221-ee480838109b // indirect + golang.org/x/sys v0.3.0 // indirect + golang.org/x/term v0.3.0 // indirect + golang.org/x/text v0.5.0 // indirect + golang.org/x/time v0.3.0 // indirect + gomodules.xyz/jsonpatch/v2 v2.2.0 // indirect + google.golang.org/appengine v1.6.7 // indirect + google.golang.org/genproto v0.0.0-20220502173005-c8bf987b8c21 // indirect + google.golang.org/grpc v1.51.0 // indirect + google.golang.org/protobuf v1.28.1 // indirect + gopkg.in/inf.v0 v0.9.1 // indirect + k8s.io/api v0.26.0 // indirect + k8s.io/apiextensions-apiserver v0.26.0 // indirect + k8s.io/component-base v0.26.0 // indirect + k8s.io/kube-openapi v0.0.0-20221012153701-172d655c2280 // indirect + k8s.io/utils v0.0.0-20221128185143-99ec85e7a448 // indirect + sigs.k8s.io/json v0.0.0-20220713155537-f223a00ba0e2 // indirect + sigs.k8s.io/structured-merge-diff/v4 v4.2.3 // indirect + sigs.k8s.io/yaml v1.3.0 // indirect +) diff --git a/cmd/operator-opamp-bridge/go.sum b/cmd/operator-opamp-bridge/go.sum new file mode 100644 index 0000000000..bdd771b446 --- /dev/null +++ b/cmd/operator-opamp-bridge/go.sum @@ -0,0 +1,707 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU= +cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU= +cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY= +cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc= +cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0= +cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To= +cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4= +cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M= +cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc= +cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk= +cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs= +cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc= +cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY= +cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o= +cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE= +cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc= +cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg= +cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc= +cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ= +cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE= +cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk= +cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I= +cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw= +cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA= +cloud.google.com/go/pubsub v1.3.1/go.mod h1:i+ucay31+CNRpDW4Lu78I4xXG+O1r/MAHgjpRVR+TSU= +cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw= +cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos= +cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk= +cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs= +cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0= +dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= +github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo= +github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU= +github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= +github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= +github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0= +github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0= +github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho= +github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY= +github.com/benbjohnson/clock v1.1.0 h1:Q92kusRqC1XV2MjkWETPvjJVqKetz1OzxZB7mHJLju8= +github.com/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA= +github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q= +github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8= +github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM= +github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw= +github.com/cenkalti/backoff/v4 v4.2.0 h1:HN5dHm3WBOgndBH6E8V0q2jIYIR3s9yglV8k/+MN3u4= +github.com/cenkalti/backoff/v4 v4.2.0/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE= +github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU= +github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc= +github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= +github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE= +github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= +github.com/chzyer/logex v1.1.10/go.mod 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0000000000..3881885f31 --- /dev/null +++ b/cmd/operator-opamp-bridge/header.txt @@ -0,0 +1,13 @@ +Copyright The OpenTelemetry Authors + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. \ No newline at end of file diff --git a/cmd/operator-opamp-bridge/logger/logger.go b/cmd/operator-opamp-bridge/logger/logger.go new file mode 100644 index 0000000000..e973c7f5bd --- /dev/null +++ b/cmd/operator-opamp-bridge/logger/logger.go @@ -0,0 +1,40 @@ +// Copyright The OpenTelemetry Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package logger + +import ( + "fmt" + + "github.com/go-logr/logr" + "github.com/open-telemetry/opamp-go/client/types" +) + +var _ types.Logger = &Logger{} + +type Logger struct { + Logger *logr.Logger +} + +func NewLogger(logger *logr.Logger) *Logger { + return &Logger{Logger: logger} +} + +func (l *Logger) Debugf(format string, v ...interface{}) { + l.Logger.V(4).Info(fmt.Sprintf(format, v...)) +} + +func (l *Logger) Errorf(format string, v ...interface{}) { + l.Logger.V(0).Error(nil, fmt.Sprintf(format, v...)) +} diff --git a/cmd/operator-opamp-bridge/main.go b/cmd/operator-opamp-bridge/main.go new file mode 100644 index 0000000000..abbd4d8246 --- /dev/null +++ b/cmd/operator-opamp-bridge/main.go @@ -0,0 +1,62 @@ +// Copyright The OpenTelemetry Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package main + +import ( + "os" + "os/signal" + + "github.com/open-telemetry/opentelemetry-operator/cmd/operator-opamp-bridge/agent" + "github.com/open-telemetry/opentelemetry-operator/cmd/operator-opamp-bridge/config" + "github.com/open-telemetry/opentelemetry-operator/cmd/operator-opamp-bridge/logger" + "github.com/open-telemetry/opentelemetry-operator/cmd/operator-opamp-bridge/operator" +) + +func main() { + l := config.GetLogger() + cliConf, err := config.ParseCLI(l.WithName("cli-config")) + if err != nil { + l.Error(err, "unable to load ") + os.Exit(1) + } + cfg, configLoadErr := config.Load(*cliConf.ConfigFilePath) + if configLoadErr != nil { + l.Error(configLoadErr, "Unable to load configuration") + return + } + l.Info("Starting the Remote Configuration service") + agentLogf := l.WithName("agent") + agentLogger := logger.NewLogger(&agentLogf) + + kubeClient, kubeErr := cliConf.GetKubernetesClient() + if kubeErr != nil { + l.Error(kubeErr, "Couldn't create kubernetes client") + os.Exit(1) + } + operatorClient := operator.NewClient(l.WithName("operator-client"), kubeClient, cfg.GetComponentsAllowed()) + + opampClient := cfg.CreateClient(agentLogger) + opampAgent := agent.NewAgent(agentLogger, operatorClient, cfg, opampClient) + + if err := opampAgent.Start(); err != nil { + l.Error(err, "Cannot start OpAMP client") + os.Exit(1) + } + + interrupt := make(chan os.Signal, 1) + signal.Notify(interrupt, os.Interrupt) + <-interrupt + opampAgent.Shutdown() +} diff --git a/cmd/operator-opamp-bridge/metrics/reporter.go b/cmd/operator-opamp-bridge/metrics/reporter.go new file mode 100644 index 0000000000..08dd8a5ef1 --- /dev/null +++ b/cmd/operator-opamp-bridge/metrics/reporter.go @@ -0,0 +1,180 @@ +// Copyright The OpenTelemetry Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package metrics + +import ( + "context" + "fmt" + "net/url" + "os" + "time" + + "github.com/oklog/ulid/v2" + "github.com/shirou/gopsutil/process" + "go.opentelemetry.io/otel/attribute" + "go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp" + "go.opentelemetry.io/otel/metric" + "go.opentelemetry.io/otel/metric/instrument" + "go.opentelemetry.io/otel/metric/instrument/asyncfloat64" + "go.opentelemetry.io/otel/metric/instrument/asyncint64" + sdkmetric "go.opentelemetry.io/otel/sdk/metric" + otelresource "go.opentelemetry.io/otel/sdk/resource" + semconv "go.opentelemetry.io/otel/semconv/v1.4.0" + + "github.com/open-telemetry/opamp-go/client/types" + "github.com/open-telemetry/opamp-go/protobufs" +) + +// MetricReporter is a metric reporter that collects Agent metrics and sends them to an +// OTLP/HTTP destination. +type MetricReporter struct { + logger types.Logger + + meter metric.Meter + meterShutdowner func() + done chan struct{} + + // The Agent's process. + process *process.Process + + // Some example metrics to report. + processMemoryPhysical asyncint64.Gauge + processCpuTime asyncfloat64.Counter +} + +// NewMetricReporter creates an OTLP/HTTP client to the destination address supplied by the server. +// TODO: do more validation on the endpoint, allow for gRPC. +// TODO: set global provider and add more metrics to be reported. +func NewMetricReporter( + logger types.Logger, + dest *protobufs.TelemetryConnectionSettings, + agentType string, + agentVersion string, + instanceId ulid.ULID, +) (*MetricReporter, error) { + + if dest.DestinationEndpoint == "" { + return nil, fmt.Errorf("metric destination must specify DestinationEndpoint") + } + + u, err := url.Parse(dest.DestinationEndpoint) + if err != nil { + return nil, fmt.Errorf("invalid DestinationEndpoint: %w", err) + } + + // Create OTLP/HTTP metric exporter. + opts := []otlpmetrichttp.Option{ + otlpmetrichttp.WithEndpoint(u.Host), + otlpmetrichttp.WithURLPath(u.Path), + } + + headers := map[string]string{} + for _, header := range dest.Headers.GetHeaders() { + headers[header.GetKey()] = header.GetValue() + } + opts = append(opts, otlpmetrichttp.WithHeaders(headers)) + + client, err := otlpmetrichttp.New(context.Background(), opts...) + if err != nil { + return nil, fmt.Errorf("failed to initialize otlp metric http client: %w", err) + } + + // Define the Resource to be exported with all metrics. Use OpenTelemetry semantic + // conventions as the OpAMP spec requires: + // https://github.com/open-telemetry/opamp-spec/blob/main/specification.md#own-telemetry-reporting + resource, resourceErr := otelresource.New(context.Background(), + otelresource.WithAttributes( + semconv.ServiceNameKey.String(agentType), + semconv.ServiceVersionKey.String(agentVersion), + semconv.ServiceInstanceIDKey.String(instanceId.String()), + ), + ) + if resourceErr != nil { + return nil, resourceErr + } + + provider := sdkmetric.NewMeterProvider( + sdkmetric.WithResource(resource), + sdkmetric.WithReader(sdkmetric.NewPeriodicReader(client, sdkmetric.WithInterval(5*time.Second)))) + + reporter := &MetricReporter{ + logger: logger, + } + + reporter.done = make(chan struct{}) + + reporter.meter = provider.Meter("opamp") + + reporter.process, err = process.NewProcess(int32(os.Getpid())) + if err != nil { + return nil, fmt.Errorf("cannot query own process: %w", err) + } + + // Create some metrics that will be reported according to OpenTelemetry semantic + // conventions for process metrics (conventions are TBD for now). + reporter.processCpuTime, err = reporter.meter.AsyncFloat64().Counter( + "process.cpu.time", + ) + if err != nil { + return nil, fmt.Errorf("can't create process time metric: %w", err) + } + err = reporter.meter.RegisterCallback([]instrument.Asynchronous{reporter.processCpuTime}, reporter.processCpuTimeFunc) + if err != nil { + return nil, fmt.Errorf("can't create register callback: %w", err) + } + reporter.processMemoryPhysical, err = reporter.meter.AsyncInt64().Gauge( + "process.memory.physical_usage", + ) + if err != nil { + return nil, fmt.Errorf("can't create memory metric: %w", err) + } + err = reporter.meter.RegisterCallback([]instrument.Asynchronous{reporter.processMemoryPhysical}, reporter.processMemoryPhysicalFunc) + if err != nil { + return nil, fmt.Errorf("can't register callback: %w", err) + } + + reporter.meterShutdowner = func() { _ = provider.Shutdown(context.Background()) } + + return reporter, nil +} + +func (reporter *MetricReporter) processCpuTimeFunc(c context.Context) { + times, err := reporter.process.Times() + if err != nil { + reporter.logger.Errorf("Cannot get process CPU times: %w", err) + } + reporter.processCpuTime.Observe(c, times.User, attribute.String("state", "user")) + reporter.processCpuTime.Observe(c, times.System, attribute.String("state", "system")) + reporter.processCpuTime.Observe(c, times.Iowait, attribute.String("state", "wait")) +} + +func (reporter *MetricReporter) processMemoryPhysicalFunc(ctx context.Context) { + memory, err := reporter.process.MemoryInfo() + if err != nil { + reporter.logger.Errorf("Cannot get process memory information: %w", err) + return + } + reporter.processMemoryPhysical.Observe(ctx, int64(memory.RSS)) +} + +func (reporter *MetricReporter) Shutdown() { + if reporter.done != nil { + close(reporter.done) + } + + if reporter.meterShutdowner != nil { + reporter.meterShutdowner() + } +} diff --git a/cmd/operator-opamp-bridge/operator/client.go b/cmd/operator-opamp-bridge/operator/client.go new file mode 100644 index 0000000000..b83b476fb3 --- /dev/null +++ b/cmd/operator-opamp-bridge/operator/client.go @@ -0,0 +1,200 @@ +// Copyright The OpenTelemetry Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package operator + +import ( + "context" + "fmt" + + "github.com/go-logr/logr" + "github.com/open-telemetry/opamp-go/protobufs" + "gopkg.in/yaml.v3" + "k8s.io/apimachinery/pkg/api/errors" + "sigs.k8s.io/controller-runtime/pkg/client" + + "github.com/open-telemetry/opentelemetry-operator/apis/v1alpha1" +) + +const ( + CollectorResource = "OpenTelemetryCollector" + ResourceIdentifierKey = "created-by" + ResourceIdentifierValue = "operator-opamp-bridge" +) + +type ConfigApplier interface { + // Apply receives a name and namespace to apply an OpenTelemetryCollector CRD that is contained in the configmap. + Apply(name string, namespace string, configmap *protobufs.AgentConfigFile) error + + // GetInstance retrieves an OpenTelemetryCollector CRD given a name and namespace. + GetInstance(name string, namespace string) (*v1alpha1.OpenTelemetryCollector, error) + + // ListInstances retrieves all OpenTelemetryCollector CRDs created by the operator-opamp-bridge agent. + ListInstances() ([]v1alpha1.OpenTelemetryCollector, error) + + // Delete attempts to delete an OpenTelemetryCollector object given a name and namespace. + Delete(name string, namespace string) error +} + +type Client struct { + log logr.Logger + componentsAllowed map[string]map[string]bool + k8sClient client.Client + close chan bool +} + +var _ ConfigApplier = &Client{} + +func NewClient(log logr.Logger, c client.Client, componentsAllowed map[string]map[string]bool) *Client { + return &Client{ + log: log, + componentsAllowed: componentsAllowed, + k8sClient: c, + close: make(chan bool, 1), + } +} + +func (c Client) create(ctx context.Context, name string, namespace string, collector *v1alpha1.OpenTelemetryCollector) error { + // Set the defaults + collector.Default() + collector.TypeMeta.Kind = CollectorResource + collector.TypeMeta.APIVersion = v1alpha1.GroupVersion.String() + collector.ObjectMeta.Name = name + collector.ObjectMeta.Namespace = namespace + + if collector.ObjectMeta.Labels == nil { + collector.ObjectMeta.Labels = map[string]string{} + } + collector.ObjectMeta.Labels[ResourceIdentifierKey] = ResourceIdentifierValue + err := collector.ValidateCreate() + if err != nil { + return err + } + c.log.Info("Creating collector") + return c.k8sClient.Create(ctx, collector) +} + +func (c Client) update(ctx context.Context, old *v1alpha1.OpenTelemetryCollector, new *v1alpha1.OpenTelemetryCollector) error { + new.ObjectMeta = old.ObjectMeta + new.TypeMeta = old.TypeMeta + err := new.ValidateUpdate(old) + if err != nil { + return err + } + c.log.Info("Updating collector") + return c.k8sClient.Update(ctx, new) +} + +func (c Client) Apply(name string, namespace string, configmap *protobufs.AgentConfigFile) error { + c.log.Info("Received new config", "name", name, "namespace", namespace) + var collectorSpec v1alpha1.OpenTelemetryCollectorSpec + err := yaml.Unmarshal(configmap.Body, &collectorSpec) + if err != nil { + return err + } + if len(collectorSpec.Config) == 0 { + return errors.NewBadRequest("Must supply valid configuration") + } + reasons, validateErr := c.validate(collectorSpec) + if validateErr != nil { + return validateErr + } + if len(reasons) > 0 { + return errors.NewBadRequest(fmt.Sprintf("Items in config are not allowed: %v", reasons)) + } + collector := &v1alpha1.OpenTelemetryCollector{Spec: collectorSpec} + ctx := context.Background() + instance, err := c.GetInstance(name, namespace) + if err != nil { + return err + } + if instance != nil { + return c.update(ctx, instance, collector) + } + return c.create(ctx, name, namespace, collector) +} + +func (c Client) Delete(name string, namespace string) error { + ctx := context.Background() + result := v1alpha1.OpenTelemetryCollector{} + err := c.k8sClient.Get(ctx, client.ObjectKey{ + Namespace: namespace, + Name: name, + }, &result) + if err != nil { + if errors.IsNotFound(err) { + return nil + } + return err + } + return c.k8sClient.Delete(ctx, &result) +} + +func (c Client) ListInstances() ([]v1alpha1.OpenTelemetryCollector, error) { + ctx := context.Background() + result := v1alpha1.OpenTelemetryCollectorList{} + err := c.k8sClient.List(ctx, &result, client.MatchingLabels{ + ResourceIdentifierKey: ResourceIdentifierValue, + }) + if err != nil { + return nil, err + } + return result.Items, nil +} + +func (c Client) GetInstance(name string, namespace string) (*v1alpha1.OpenTelemetryCollector, error) { + ctx := context.Background() + result := v1alpha1.OpenTelemetryCollector{} + err := c.k8sClient.Get(ctx, client.ObjectKey{ + Namespace: namespace, + Name: name, + }, &result) + if err != nil { + if errors.IsNotFound(err) { + return nil, nil + } + return nil, err + } + return &result, nil +} + +func (c Client) validate(spec v1alpha1.OpenTelemetryCollectorSpec) ([]string, error) { + // Do not use this feature if it's not specified + if c.componentsAllowed == nil || len(c.componentsAllowed) == 0 { + return nil, nil + } + collectorConfig := make(map[string]map[string]interface{}) + err := yaml.Unmarshal([]byte(spec.Config), &collectorConfig) + if err != nil { + return nil, err + } + var invalidComponents []string + for component, componentMap := range collectorConfig { + if component == "service" { + // We don't care about what's in the service pipelines. + // Only components declared in the configuration can be used in the service pipeline. + continue + } + if _, ok := c.componentsAllowed[component]; !ok { + invalidComponents = append(invalidComponents, component) + continue + } + for componentName := range componentMap { + if _, ok := c.componentsAllowed[component][componentName]; !ok { + invalidComponents = append(invalidComponents, fmt.Sprintf("%s.%s", component, componentName)) + } + } + } + return invalidComponents, nil +} diff --git a/cmd/operator-opamp-bridge/operator/client_test.go b/cmd/operator-opamp-bridge/operator/client_test.go new file mode 100644 index 0000000000..9d4284b90c --- /dev/null +++ b/cmd/operator-opamp-bridge/operator/client_test.go @@ -0,0 +1,196 @@ +// Copyright The OpenTelemetry Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package operator + +import ( + "os" + "testing" + + "github.com/stretchr/testify/require" + + "github.com/open-telemetry/opamp-go/protobufs" + "github.com/stretchr/testify/assert" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" + "k8s.io/apimachinery/pkg/runtime" + "sigs.k8s.io/controller-runtime/pkg/client" + "sigs.k8s.io/controller-runtime/pkg/client/fake" + logf "sigs.k8s.io/controller-runtime/pkg/log" + + "github.com/open-telemetry/opentelemetry-operator/apis/v1alpha1" +) + +var ( + clientLogger = logf.Log.WithName("client-tests") +) + +func getFakeClient(t *testing.T) client.WithWatch { + schemeBuilder := runtime.NewSchemeBuilder(func(s *runtime.Scheme) error { + s.AddKnownTypes(v1alpha1.GroupVersion, &v1alpha1.OpenTelemetryCollector{}, &v1alpha1.OpenTelemetryCollectorList{}) + metav1.AddToGroupVersion(s, v1alpha1.GroupVersion) + return nil + }) + scheme := runtime.NewScheme() + err := schemeBuilder.AddToScheme(scheme) + require.NoError(t, err, "Should be able to add custom types") + c := fake.NewClientBuilder().WithScheme(scheme) + return c.Build() +} + +func TestClient_Apply(t *testing.T) { + type args struct { + name string + namespace string + file string + config string + } + tests := []struct { + name string + args args + wantErr bool + }{ + { + name: "base case", + args: args{ + name: "test", + namespace: "opentelemetry", + file: "testdata/collector.yaml", + }, + wantErr: false, + }, + { + name: "invalid config", + args: args{ + name: "test", + namespace: "opentelemetry", + file: "testdata/invalid-collector.yaml", + }, + wantErr: true, + }, + { + name: "empty config", + args: args{ + name: "test", + namespace: "opentelemetry", + config: "", + }, + wantErr: true, + }, + } + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + fakeClient := getFakeClient(t) + c := NewClient(clientLogger, fakeClient, nil) + var colConfig []byte + var err error + if len(tt.args.file) > 0 { + colConfig, err = loadConfig(tt.args.file) + require.NoError(t, err, "Should be no error on loading test configuration") + } else { + colConfig = []byte(tt.args.config) + } + configmap := &protobufs.AgentConfigFile{ + Body: colConfig, + ContentType: "yaml", + } + if err := c.Apply(tt.args.name, tt.args.namespace, configmap); (err != nil) != tt.wantErr { + t.Errorf("Apply() error = %v, wantErr %v", err, tt.wantErr) + } + }) + } +} + +func Test_collectorUpdate(t *testing.T) { + name := "test" + namespace := "testing" + fakeClient := getFakeClient(t) + c := NewClient(clientLogger, fakeClient, nil) + colConfig, err := loadConfig("testdata/collector.yaml") + require.NoError(t, err, "Should be no error on loading test configuration") + configmap := &protobufs.AgentConfigFile{ + Body: colConfig, + ContentType: "yaml", + } + // Apply a valid initial configuration + err = c.Apply(name, namespace, configmap) + require.NoError(t, err, "Should apply base config") + + // Get the newly created collector + instance, err := c.GetInstance(name, namespace) + require.NoError(t, err, "Should be able to get the newly created instance") + assert.Contains(t, instance.Spec.Config, "processors: []") + + // Try updating with an invalid one + configmap.Body = []byte("empty, invalid!") + err = c.Apply(name, namespace, configmap) + assert.Error(t, err, "Should be unable to update") + + // Update successfully with a valid configuration + newColConfig, err := loadConfig("testdata/updated-collector.yaml") + require.NoError(t, err, "Should be no error on loading test configuration") + newConfigMap := &protobufs.AgentConfigFile{ + Body: newColConfig, + ContentType: "yaml", + } + err = c.Apply(name, namespace, newConfigMap) + require.NoError(t, err, "Should be able to update collector") + + // Get the updated collector + updatedInstance, err := c.GetInstance(name, namespace) + require.NoError(t, err, "Should be able to get the updated instance") + assert.Contains(t, updatedInstance.Spec.Config, "processors: [memory_limiter, batch]") + + allInstances, err := c.ListInstances() + require.NoError(t, err, "Should be able to list all collectors") + assert.Len(t, allInstances, 1) + assert.Equal(t, allInstances[0], *updatedInstance) +} + +func Test_collectorDelete(t *testing.T) { + name := "test" + namespace := "testing" + fakeClient := getFakeClient(t) + c := NewClient(clientLogger, fakeClient, nil) + colConfig, err := loadConfig("testdata/collector.yaml") + require.NoError(t, err, "Should be no error on loading test configuration") + configmap := &protobufs.AgentConfigFile{ + Body: colConfig, + ContentType: "yaml", + } + // Apply a valid initial configuration + err = c.Apply(name, namespace, configmap) + require.NoError(t, err, "Should apply base config") + + // Get the newly created collector + instance, err := c.GetInstance(name, namespace) + require.NoError(t, err, "Should be able to get the newly created instance") + assert.Contains(t, instance.Spec.Config, "processors: []") + + // Delete it + err = c.Delete(name, namespace) + require.NoError(t, err, "Should be able to delete a collector") + + // Check there's nothing left + allInstances, err := c.ListInstances() + require.NoError(t, err, "Should be able to list all collectors") + assert.Len(t, allInstances, 0) +} + +func loadConfig(file string) ([]byte, error) { + yamlFile, err := os.ReadFile(file) + if err != nil { + return []byte{}, err + } + return yamlFile, nil +} diff --git a/cmd/operator-opamp-bridge/operator/testdata/collector.yaml b/cmd/operator-opamp-bridge/operator/testdata/collector.yaml new file mode 100644 index 0000000000..1e808b1981 --- /dev/null +++ b/cmd/operator-opamp-bridge/operator/testdata/collector.yaml @@ -0,0 +1,24 @@ +config: | + receivers: + otlp: + protocols: + grpc: + http: + processors: + memory_limiter: + check_interval: 1s + limit_percentage: 75 + spike_limit_percentage: 15 + batch: + send_batch_size: 10000 + timeout: 10s + + exporters: + logging: + + service: + pipelines: + traces: + receivers: [otlp] + processors: [] + exporters: [logging] \ No newline at end of file diff --git a/cmd/operator-opamp-bridge/operator/testdata/invalid-collector.yaml b/cmd/operator-opamp-bridge/operator/testdata/invalid-collector.yaml new file mode 100644 index 0000000000..bfc325a9bd --- /dev/null +++ b/cmd/operator-opamp-bridge/operator/testdata/invalid-collector.yaml @@ -0,0 +1,24 @@ +config: | + receivers: + otlp: + protocols: + grpc: + http: + processors: + memory_limiter: + check_interval: 1s + limit_percentage: 75 + spike_limit_percentage: 15 + batch: + send_batch_size: 10000 + timeout: 10s +GARBAGE + exporters: + logging: + + service: + pipelines: + traces: + receivers: [otlp] + processors: [] + exporters: [logging] \ No newline at end of file diff --git a/cmd/operator-opamp-bridge/operator/testdata/updated-collector.yaml b/cmd/operator-opamp-bridge/operator/testdata/updated-collector.yaml new file mode 100644 index 0000000000..d04399ea07 --- /dev/null +++ b/cmd/operator-opamp-bridge/operator/testdata/updated-collector.yaml @@ -0,0 +1,24 @@ +config: | + receivers: + otlp: + protocols: + grpc: + http: + processors: + memory_limiter: + check_interval: 1s + limit_percentage: 75 + spike_limit_percentage: 15 + batch: + send_batch_size: 10000 + timeout: 10s + + exporters: + logging: + + service: + pipelines: + traces: + receivers: [otlp] + processors: [memory_limiter, batch] + exporters: [logging] \ No newline at end of file