feat: add support for running on AWS Lambda managed instance types

collector/internal/confmap/converter/decoupleafterbatchconverter/converter.go

@@ -24,6 +24,7 @@ import (
 	"fmt"
 	"strings"
 
+	"github.com/open-telemetry/opentelemetry-lambda/collector/lambdalifecycle"
 	"go.opentelemetry.io/collector/confmap"
 )
 
@@ -43,6 +44,14 @@ func New() confmap.Converter {
 }
 
 func (c converter) Convert(_ context.Context, conf *confmap.Conf) error {
+	initType := lambdalifecycle.InitTypeFromEnv(lambdalifecycle.InitTypeEnvVar)
+
+	// Do not append decouple processors for Lambda Managed Instances
+	// see: https://docs.aws.amazon.com/lambda/latest/dg/lambda-managed-instances-execution-environment.html
+	if initType == lambdalifecycle.LambdaManagedInstances {
+		return nil
+	}
+
 	serviceVal := conf.Get(serviceKey)
 	service, ok := serviceVal.(map[string]interface{})
 	if !ok {

collector/internal/confmap/converter/decoupleafterbatchconverter/converter_test.go

@@ -17,6 +17,7 @@ import (
 	"context"
 	"testing"
 
+	"github.com/open-telemetry/opentelemetry-lambda/collector/lambdalifecycle"
 	"go.opentelemetry.io/collector/confmap"
 
 	"github.com/google/go-cmp/cmp"
@@ -151,3 +152,38 @@ func TestConvert(t *testing.T) {
 		})
 	}
 }
+
+func TestConvert_LambdaManagedInstances(t *testing.T) {
+	t.Setenv(lambdalifecycle.InitTypeEnvVar, lambdalifecycle.LambdaManagedInstances.String())
+
+	// Config that would normally have decouple appended
+	input := confmap.NewFromStringMap(map[string]interface{}{
+		"service": map[string]interface{}{
+			"pipelines": map[string]interface{}{
+				"traces": map[string]interface{}{
+					"processors": []interface{}{"batch"},
+				},
+			},
+		},
+	})
+
+	// Expected to remain unchanged
+	expected := confmap.NewFromStringMap(map[string]interface{}{
+		"service": map[string]interface{}{
+			"pipelines": map[string]interface{}{
+				"traces": map[string]interface{}{
+					"processors": []interface{}{"batch"},
+				},
+			},
+		},
+	})
+
+	c := New()
+	err := c.Convert(context.Background(), input)
+	if err != nil {
+		t.Errorf("unexpected error converting: %v", err)
+	}
+	if diff := cmp.Diff(expected.ToStringMap(), input.ToStringMap()); diff != "" {
+		t.Errorf("Convert() mismatch: (-want +got):\n%s", diff)
+	}
+}

collector/internal/extensionapi/client.go

@@ -76,15 +76,17 @@ type Client struct {
 	httpClient  *http.Client
 	extensionID string
 	logger      *zap.Logger
+	events      []EventType
 }
 
 // NewClient returns a Lambda Extensions API client.
-func NewClient(logger *zap.Logger, awsLambdaRuntimeAPI string) *Client {
+func NewClient(logger *zap.Logger, awsLambdaRuntimeAPI string, events []EventType) *Client {
 	baseURL := fmt.Sprintf("http://%s/2020-01-01/extension", awsLambdaRuntimeAPI)
 	return &Client{
 		baseURL:    baseURL,
 		httpClient: &http.Client{},
 		logger:     logger.Named("extensionAPI.Client"),
+		events:     events,
 	}
 }
 
@@ -94,7 +96,7 @@ func (e *Client) Register(ctx context.Context, filename string) (*RegisterRespon
 	url := e.baseURL + action
 
 	reqBody, err := json.Marshal(map[string]interface{}{
-		"events": []EventType{Invoke, Shutdown},
+		"events": e.events,
 	})
 	if err != nil {
 		return nil, err

collector/internal/lifecycle/constants.go

@@ -0,0 +1,17 @@
+// 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 lifecycle
+
+const RuntimeApiEnvVar = "AWS_LAMBDA_RUNTIME_API"

collector/internal/lifecycle/manager.go

@@ -17,13 +17,14 @@ package lifecycle
 import (
 	"context"
 	"fmt"
-	"github.com/open-telemetry/opentelemetry-lambda/collector/lambdalifecycle"
 	"os"
 	"os/signal"
 	"path/filepath"
 	"sync"
 	"syscall"
 
+	"github.com/open-telemetry/opentelemetry-lambda/collector/lambdalifecycle"
+
 	"go.uber.org/multierr"
 	"go.uber.org/zap"
 
@@ -49,6 +50,7 @@ type manager struct {
 	listener           *telemetryapi.Listener
 	wg                 sync.WaitGroup
 	lifecycleListeners []lambdalifecycle.Listener
+	initType           lambdalifecycle.InitType
 }
 
 func NewManager(ctx context.Context, logger *zap.Logger, version string) (context.Context, *manager) {
@@ -62,28 +64,40 @@ func NewManager(ctx context.Context, logger *zap.Logger, version string) (contex
 		logger.Info("received signal", zap.String("signal", s.String()))
 	}()
 
-	extensionClient := extensionapi.NewClient(logger, os.Getenv("AWS_LAMBDA_RUNTIME_API"))
+	var extensionEvents []extensionapi.EventType
+	initType := lambdalifecycle.InitTypeFromEnv(lambdalifecycle.InitTypeEnvVar)
+	if initType == lambdalifecycle.LambdaManagedInstances {
+		extensionEvents = []extensionapi.EventType{extensionapi.Shutdown}
+	} else {
+		extensionEvents = []extensionapi.EventType{extensionapi.Invoke, extensionapi.Shutdown}
+	}
+
+	extensionClient := extensionapi.NewClient(logger, os.Getenv(RuntimeApiEnvVar), extensionEvents)
 	res, err := extensionClient.Register(ctx, extensionName)
 	if err != nil {
 		logger.Fatal("Cannot register extension", zap.Error(err))
 	}
 
-	listener := telemetryapi.NewListener(logger)
-	addr, err := listener.Start()
-	if err != nil {
-		logger.Fatal("Cannot start Telemetry API Listener", zap.Error(err))
-	}
+	var listener *telemetryapi.Listener
+	if initType != lambdalifecycle.LambdaManagedInstances {
+		listener = telemetryapi.NewListener(logger)
+		addr, err := listener.Start()
+		if err != nil {
+			logger.Fatal("Cannot start Telemetry API Listener", zap.Error(err))
+		}
 
-	telemetryClient := telemetryapi.NewClient(logger)
-	_, err = telemetryClient.Subscribe(ctx, []telemetryapi.EventType{telemetryapi.Platform}, res.ExtensionID, addr)
-	if err != nil {
-		logger.Fatal("Cannot register Telemetry API client", zap.Error(err))
+		telemetryClient := telemetryapi.NewClient(logger)
+		_, err = telemetryClient.Subscribe(ctx, []telemetryapi.EventType{telemetryapi.Platform}, res.ExtensionID, addr)
+		if err != nil {
+			logger.Fatal("Cannot register Telemetry API client", zap.Error(err))
+		}
 	}
 
 	lm := &manager{
 		logger:          logger.Named("lifecycle.manager"),
 		extensionClient: extensionClient,
 		listener:        listener,
+		initType:        initType,
 	}
 
 	factories, _ := lambdacomponents.Components(res.ExtensionID)
@@ -134,25 +148,27 @@ func (lm *manager) processEvents(ctx context.Context) error {
 			if res.EventType == extensionapi.Shutdown {
 				lm.logger.Info("Received SHUTDOWN event")
 				lm.notifyEnvironmentShutdown()
-				lm.listener.Shutdown()
+				if lm.listener != nil {
+					lm.listener.Shutdown()
+				}
 				err = lm.collector.Stop()
 				if err != nil {
 					if _, exitErr := lm.extensionClient.ExitError(ctx, fmt.Sprintf("error stopping collector: %v", err)); exitErr != nil {
 						return multierr.Combine(err, exitErr)
 					}
 				}
 				return err
-			}
+			} else if lm.listener != nil && res.EventType == extensionapi.Invoke {
+				lm.notifyFunctionInvoked()
 
-			lm.notifyFunctionInvoked()
+				err = lm.listener.Wait(ctx, res.RequestID)
+				if err != nil {
+					lm.logger.Error("problem waiting for platform.runtimeDone event", zap.Error(err), zap.String("requestID", res.RequestID))
+				}
 
-			err = lm.listener.Wait(ctx, res.RequestID)
-			if err != nil {
-				lm.logger.Error("problem waiting for platform.runtimeDone event", zap.Error(err), zap.String("requestID", res.RequestID))
+				// Check other components are ready before allowing the freezing of the environment.
+				lm.notifyFunctionFinished()
 			}
-
-			// Check other components are ready before allowing the freezing of the environment.
-			lm.notifyFunctionFinished()
 		}
 	}
 }

collector/internal/lifecycle/manager_test.go

@@ -56,27 +56,28 @@ func TestRun(t *testing.T) {
 	u, err := url.Parse(server.URL)
 	require.NoError(t, err)
 
+	extensionEventTypes := []extensionapi.EventType{extensionapi.Invoke, extensionapi.Shutdown}
 	// test with an error
 	lm := manager{
 		collector:       &MockCollector{err: fmt.Errorf("test start error")},
 		logger:          logger,
-		extensionClient: extensionapi.NewClient(logger, ""),
+		extensionClient: extensionapi.NewClient(logger, "", extensionEventTypes),
 	}
 	require.Error(t, lm.Run(ctx))
 	// test with no waitgroup
 	lm = manager{
 		collector:       &MockCollector{},
 		logger:          logger,
 		listener:        telemetryapi.NewListener(logger),
-		extensionClient: extensionapi.NewClient(logger, u.Host),
+		extensionClient: extensionapi.NewClient(logger, u.Host, extensionEventTypes),
 	}
 	require.NoError(t, lm.Run(ctx))
 	// test with waitgroup counter incremented
 	lm = manager{
 		collector:       &MockCollector{},
 		logger:          logger,
 		listener:        telemetryapi.NewListener(logger),
-		extensionClient: extensionapi.NewClient(logger, u.Host),
+		extensionClient: extensionapi.NewClient(logger, u.Host, extensionEventTypes),
 	}
 	lm.wg.Add(1)
 	go func() {
@@ -142,7 +143,7 @@ func TestProcessEvents(t *testing.T) {
 				collector:       &MockCollector{err: tc.collectorError},
 				logger:          logger,
 				listener:        telemetryapi.NewListener(logger),
-				extensionClient: extensionapi.NewClient(logger, u.Host),
+				extensionClient: extensionapi.NewClient(logger, u.Host, []extensionapi.EventType{extensionapi.Invoke, extensionapi.Shutdown}),
 			}
 			lm.wg.Add(1)
 			if tc.err != nil {
@@ -152,7 +153,6 @@ func TestProcessEvents(t *testing.T) {
 			} else {
 				require.NoError(t, lm.processEvents(ctx))
 			}
-
 		})
 	}
 

collector/lambdalifecycle/constants.go

@@ -0,0 +1,17 @@
+// 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 lambdalifecycle
+
+const InitTypeEnvVar = "AWS_LAMBDA_INITIALIZATION_TYPE"

collector/lambdalifecycle/go.mod

@@ -1,3 +1,11 @@
 module github.com/open-telemetry/opentelemetry-lambda/collector/lambdalifecycle
 
 go 1.24.11
+
+require github.com/stretchr/testify v1.11.1
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

collector/lambdalifecycle/go.sum

@@ -0,0 +1,10 @@
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
+github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

collector/lambdalifecycle/types.go

@@ -0,0 +1,61 @@
+// 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 lambdalifecycle
+
+import "os"
+
+type InitType int
+
+const (
+	OnDemand InitType = iota
+	ProvisionedConcurrency
+	SnapStart
+	LambdaManagedInstances
+	Unknown InitType = -1
+)
+
+func (t InitType) String() string {
+	switch t {
+	case OnDemand:
+		return "on-demand"
+	case ProvisionedConcurrency:
+		return "provisioned-concurrency"
+	case SnapStart:
+		return "snap-start"
+	case LambdaManagedInstances:
+		return "lambda-managed-instances"
+	default:
+		return "unknown"
+	}
+}
+
+func ParseInitType(s string) InitType {
+	switch s {
+	case "on-demand":
+		return OnDemand
+	case "provisioned-concurrency":
+		return ProvisionedConcurrency
+	case "snap-start":
+		return SnapStart
+	case "lambda-managed-instances":
+		return LambdaManagedInstances
+	default:
+		return Unknown
+	}
+}
+
+func InitTypeFromEnv(envVar string) InitType {
+	return ParseInitType(os.Getenv(envVar))
+}