[receiver/awslambda] Adopt streaming for AWS Lambda receiver

.chloggen/feat_aws-lambda-receiver-stream-support.yaml

@@ -0,0 +1,27 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. receiver/filelog)
+component: receiver/awslambda
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Adopt encoding extension streaming for AWS Lambda receiver
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [46608]
+
+# (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:
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: []

receiver/awslambdareceiver/README.md

@@ -84,6 +84,10 @@ Consider following notes on default behaviors:
 - When `cloudwatch::encoding` is not specified, the receiver defaults to parsing CloudWatch Logs messages to OpenTelemetry log records.
 - For metrics, the default behavior is to decode using `awscloudwatchmetricstreams_encoding` extension.
 
+> [!NOTE]
+> The receiver supports end to end streaming utilizing encoding extension streaming capabilities.
+> For extensions that does not support streaming, xstreamencoding wrapper will be used where full payload get processed at once.
+
 Given below are example configurations for various use cases.
 
 ### Example 1: VPC Flow Logs from S3

receiver/awslambdareceiver/benchmark_test.go

@@ -44,7 +44,7 @@ func BenchmarkHandleS3Notification(b *testing.B) {
 		enrichS3Logs(logs, event)
 		return consumer.ConsumeLogs(ctx, logs)
 	}
-	handler := newS3Handler(service, zap.NewNop(), customLogUnmarshaler{}.UnmarshalLogs, logsConsumer)
+	handler := newS3LogsHandler(service, zap.NewNop(), &customLogUnmarshaler{}, logsConsumer)
 
 	b.Run("HandleS3Event", func(b *testing.B) {
 		b.ReportAllocs()

receiver/awslambdareceiver/go.mod

@@ -7,8 +7,10 @@ require (
 	github.com/aws/aws-sdk-go-v2/config v1.32.11
 	github.com/aws/aws-sdk-go-v2/service/s3 v1.96.4
 	github.com/goccy/go-json v0.10.5
+	github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding v0.147.0
 	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/golden v0.147.0
 	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/pdatatest v0.147.0
+	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/xstreamencoding v0.147.0
 	github.com/stretchr/testify v1.11.1
 	go.opentelemetry.io/collector/component v1.53.1-0.20260312104527-c74f90fe3922
 	go.opentelemetry.io/collector/component/componenttest v0.147.1-0.20260312104527-c74f90fe3922
@@ -17,6 +19,7 @@ require (
 	go.opentelemetry.io/collector/consumer v1.53.1-0.20260312104527-c74f90fe3922
 	go.opentelemetry.io/collector/consumer/consumererror v0.147.1-0.20260312104527-c74f90fe3922
 	go.opentelemetry.io/collector/consumer/consumertest v0.147.1-0.20260312104527-c74f90fe3922
+	go.opentelemetry.io/collector/extension v1.53.1-0.20260312104527-c74f90fe3922
 	go.opentelemetry.io/collector/pdata v1.53.1-0.20260312104527-c74f90fe3922
 	go.opentelemetry.io/collector/receiver v1.53.1-0.20260312104527-c74f90fe3922
 	go.opentelemetry.io/collector/receiver/receivertest v0.147.1-0.20260312104527-c74f90fe3922
@@ -92,4 +95,8 @@ replace github.com/open-telemetry/opentelemetry-collector-contrib/pkg/pdatatest
 
 replace github.com/open-telemetry/opentelemetry-collector-contrib/pkg/golden => ../../pkg/golden
 
+replace github.com/open-telemetry/opentelemetry-collector-contrib/pkg/xstreamencoding => ../../pkg/xstreamencoding
+
+replace github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding => ../../extension/encoding
+
 tool go.uber.org/mock/mockgen