Lambda-Extension release notes

Lambda-Extension v2.3.10

Wed, 04 Oct 2023 00:00:00 +0000

Notes

Includes additional debugging prints for troubleshooting the logserver logic.

Lambda-Extension v2.3.11

Wed, 28 Feb 2024 00:00:00 +0000

Fixed issues

Fixed crashing on closed pipe caused by race condition during extension startup.
Fixed crashing on write to closed channel due to race condition during extension shutdown.
Fixed handler checks for Docker and ESM JS environments.
Minor version bump for Go grpc, Go net, and JAVA gson.

Lambda-Extension v2.3.12

Mon, 24 Jun 2024 00:00:00 +0000

Notes

Adds local testing for Extension. Local testing is enabled by setting NEWRELIC_LOCAL_TESTING to true. Currently it supports Python runtime only, and generates Lambda layers for x86 and arm architectures using publish.sh and invokes the test Lambdas using test.sh script.
Removes SSM parameter store calls. Extension has sanitycheck calls to SSM store that adds to production quotas for customers. Call SSM store only when NEW_RELIC_LICENSE_KEY_SSM_PARAMETER_NAME var is set to true.
Adds timeout for calls to Secrets Manager & SSM Parameter Store.
Gives priority to NEW_RELIC_LICENSE_KEY and bypass calls to Secrets Manager if NEW_RELIC_LICENSE_KEY is set.

Fixed issue

Resolved Extension warning messages for Node.js runtime with ESM scripts. Previously, correctly configuring newrelic-lambda-wrapper.handler and NEW_RELIC_LAMBDA_HANDLER did not eliminate warning message for the Node.js ESM scripts. The solution involved using NEW_RELIC_USE_ESM to detect ESM scripts #209.

Lambda-Extension v2.3.13

Thu, 08 Aug 2024 00:00:00 +0000

Notes

Introduces support for Ruby Lambda runtime.
Adds tags for logs, and introduces environment variables to configure custom attributes or other metadata when sending logs directly using extension. Use NR_TAGS & NR_ENV_DELIMITER environment variables similar to the log-ingestion-lambda to add metadata to the logs.
Removes debug logs which get printed for each log line. Modifies confusing message log - mainLoop: blocking is confusing customer and adds payloadSize to the log message Telemetry client error: %s, payload size: %d bytes".
Updates on .NET Extension example to use newly released New Relic .NET Lambda layer instead of OpenTracing.
Updates on readme build step. Updated target for make command, example make dist-x86_64 and make dist-arm64.

Fixed issue

Fixed NR_EXT log lines. The extension will not print any NR_EXT line when logsEnabled is false, including the startup line #226.

Lambda-Extension v2.3.14

Thu, 17 Oct 2024 00:00:00 +0000

Notes

Adds a feature to ignore extension startup checks using the Lambda environment variable NEW_RELIC_IGNORE_EXTENSION_CHECKS. You can ignore selected extension checks by using a comma-separated value. For example, agent,handler will ignore agent and handler extension checks. Use all to ignore all extension checks. We recommended you ignore all extension checks after you've successfully instrumented the Lambda function.
Updates information about environment variable NR_TAGS in the Readme. You can use NR_TAGS to add tags to all the Lambda log events.
Introduces support for the NEW_RELIC_ENABLED environment variable which you can use to disable Agent. The NEW_RELIC_ENABLED has the env bool type.

Fixed issue

Fixed docker handler warning issue for containerized lambda.

Lambda-Extension v2.3.15

Mon, 09 Dec 2024 00:00:00 +0000

New feature

Sends Extension log events to New Relic by setting the environment variable NEW_RELIC_EXTENSION_SEND_EXTENSION_LOGS to true. This is in addition to sending function log events, which can be enabled by setting the environment variable NEW_RELIC_EXTENSION_SEND_FUNCTION_LOGS to true.

Notes

Adds examples for containerized lambda using SAM.
Updates examples to use IAM policy as per least privileged policy.
Updates Extension's Golang version and dependency versions such as bump google.golang.org/protobuf from 1.30.0 to 1.33.0 and golang.org/x/net from 0.17.0 to 0.23.0.

Lambda-Extension v2.3.16

Wed, 29 Jan 2025 00:00:00 +0000

Notes

Records AWS Lambda platform.fault log event type, which captures when the AWS Lambda platform shutdown is triggered.
Updates Extension's dependency version github-go from v44.1.0 to v68.0.0.
Updates Extension's dependency version golang.org/x/net from 0.30.0 to 0.33.0.

Lambda-Extension v2.3.17

Wed, 19 Feb 2025 00:00:00 +0000

New feature

Add trace.id to Lambda logs when the Lambda environment variable NEW_RELIC_COLLECT_TRACE_ID is set to true

Notes

Add publish script for Extension only Lambda Layer, intended for local testing of Extension

Lambda-Extension v2.3.18

Tue, 08 Apr 2025 00:00:00 +0000

Notes

Added example for New Relic AI monitoring, along with instrumentation of Lambda functions with response streaming
Updated SAM examples to include latest layers and packages
Updated Ruby Lambda instrumentation example
Updated Readme to include NEW_RELIC_COLLECT_TRACE_ID environment variable which can be used to add trace-id to the Lambda logs

Fixed issues

Resolved the issue where Extension inaccurately captured timeout durations for Lambda function timeout errors
Updated sleep time to solve intermittent issue with unit test TestClientSendRetry

Lambda-Extension v2.3.19

Mon, 12 May 2025 00:00:00 +0000

Notes

Updates go version to resolve go/stdlib vulnerability
Updates example for AI monitoring in response streaming
Updates local testing newrelic_lambda_wrapper code
Updates ubuntu runner
Updates Extension build to avoid error /lib64/libc.so.6: version GLIBC_X.YZ not found.
Bump axios from 1.7.7 to 1.8.2 in /examples/sam/containerized-lambda/nodejs-sam-example/hello-world
Bump golang.org/x/net from 0.33.0 to 0.38.0

Lambda-Extension v2.3.21

Thu, 12 Jun 2025 00:00:00 +0000

Notes

APM Fusion Mode: Limited Preview

Lambda-Extension v2.3.20

Thu, 05 Jun 2025 00:00:00 +0000

Notes

Added logic to check the shutdown of logserver and prevent handler from sending messages to log channel
Remove Circle CI workflow

Fixed

Add WaitGroup to resolve log server panic resulting from multiple log server handlers sending logs to closed channel

Lambda-Extension v2.3.22

Thu, 10 Jul 2025 00:00:00 +0000

Notes

Added APM connect retry logic
Added godebug to resolve AWS Firewall issue
Added requestId extraction from logs for Node.js runtime

Fixed

Updated Readme for --enable-license-key-secret

Lambda-Extension v2.3.23

Tue, 15 Jul 2025 00:00:00 +0000

Notes

Added option to build nodejs test Layers for local testing

Fixed

Updated AWS SDK and Go Version to address Security Vulnerabilities [CVE-2020-8911, CVE-2020-8912, CVE-2025-0913, CVE-2025-4673]

Lambda-Extension v2.3.24

Fri, 29 Aug 2025 00:00:00 +0000

Fixed

Updated Go std lib version to 1.23.12 to resolve CVE-2025-47907
APM Mode: Resolved license key issue with SM/SSM in APM Mode & resolved log prefix

New feature

Added Log Level Prefix DEBUG and INFO to the existing prefix [NR_EXT]
APM Mode: Added tags to APM Mode
APM Mode: Added Lambda ARN to host for APM connect
APM Mode: Updated backoff duration for NEW_RELIC_HOST
APM Mode: Refactor APM error event data
APM Mode: Added ruby support

Lambda-Extension v2.3.4

Thu, 20 Oct 2022 00:00:00 +0000

Notes

Prevents panic occurrings when request id map is accessed concurrently.

Lambda-Extension v2.3.5

Sat, 12 Nov 2022 00:00:00 +0000

Notes

Adds support to customize the duration of retry attempts to send payload data to New Relic using the environmental variable NEW_RELIC_DATA_COLLECTION_TIMEOUT. This gives you more control over the expected runtime of your application. Note that the extension may need to send more than one payload. The value of this timeout can be any valid Golang duration string. For example, 10s = 10 seconds; 500ms = 500 milliseconds; 1m = 1 minute. See https://pkg.go.dev/maze.io/x/duration#ParseDuration for more info. The default timeout value is 10s.

Lambda-Extension v2.3.6

Mon, 23 Jan 2023 00:00:00 +0000

Notes

HTTP timeout is increased to 2.4 seconds.
Code cleanup around timeout logic.

Lambda-Extension v2.3.7

Fri, 09 Jun 2023 00:00:00 +0000

Notes

Added support for handlers with the .mjs file extension.
Added support to allow New Relic license key to be fetched from an SSM parameter.

Fixed issue

Bumped dependencies to be compatible with the latest Golang 1.19 features.

Lambda-Extension v2.3.9

Wed, 26 Jul 2023 00:00:00 +0000

Fixed issue

Fixed a bug that used to crash the Extension when a single telemetry payload exceeds 1Mb after compression.

Lambda-Extension v2.3.8

Tue, 27 Jun 2023 00:00:00 +0000

Fixed issues

Updated the SAM template for Python to use the latest resources for Python 3.10.
Added additional debug logging and simplified the code for sending log payloads to New Relic.

Lambda-Extension v2.4.0

Tue, 02 Dec 2025 00:00:00 +0000

Major Release: Rust Rewrite

Complete rewrite of the New Relic Lambda Extension from Go (v2.3.24) to Rust for improved performance, memory safety, and reduced cold start times.

New Features

APM Mode Support: Lambda functions can now report directly to New Relic APM platform as application entities
- Enable with NEW_RELIC_APM_LAMBDA_MODE=true
- Full support for metrics, spans, errors, events, and transaction traces
- Platform logs converted to APM metrics (apm.lambda.transaction.*)
- Enhanced error events for timeouts and faults with distributed tracing context
- See APM Mode Documentation for details
Request-Scoped Processing: Improved payload correlation and lifecycle management
Intelligent Buffer Management: Handles agent payloads that arrive before request context with automatic cleanup

Performance Improvements

Faster Cold Starts: Optimized Rust compilation with minimal dependencies and LTO
Lower Memory Usage: Reduced memory footprint with zero-cost abstractions
Concurrent Processing: Parallel processing of logs, platform metrics, and agent telemetry
Connection Pooling: HTTP client connection reuse across invocations

Security & Reliability

Memory Safety: Rust's ownership system prevents memory leaks and buffer overflows
Panic Safety: Global panic handler prevents Lambda crashes from extension failures
Type Safety: Compile-time guarantees eliminate entire classes of runtime errors

Technical Changes

Migrated from Go v1.23 to Rust 2021 edition
Built on Tokio async runtime
AWS SDK v1 for Rust (aws-config 1.8, aws-sdk-secretsmanager 1.88, aws-sdk-ssm 1.93)
Modular architecture with clean separation of concerns

Configuration

All existing environment variables remain unchanged for backwards compatibility. Key variables:

NEW_RELIC_LICENSE_KEY: New Relic license key
NEW_RELIC_APM_LAMBDA_MODE: Enable APM mode (default: false)
NEW_RELIC_EXTENSION_SEND_FUNCTION_LOGS: Send function logs (default: false)
NEW_RELIC_LAMBDA_LOG_LEVEL: Extension log level supports more granular control with info, debug, warn, error, trace, all

Full configuration details in the README.

Migration Notes

Drop-in Replacement: No code changes required for existing users
Environment Variables: All configuration remains the same
Binary Compatibility: Maintains compatibility with existing New Relic agents
Performance: Expect 20-40% faster cold starts and lower memory usage

[2.3.24] - Go Implementation (Legacy)

Last Go-based version before Rust migration. Maintained for reference and legacy support.

Lambda-Extension v2.4.1

Wed, 17 Dec 2025 00:00:00 +0000

Notes

Removed unnecessary trace logging for skipped Function and Extension logs.
Updated parsing logic to scan the first 50 characters instead of a 100-byte slice. Ensuring safe handling of multi-byte UTF-8 characters (like emojis) without truncation errors.

Fixed

Resolved an issue where requests were occasionally not instrumented in APM mode.
Enabled automatic NEW_RELIC_LICENSE_KEY fallback.

Lambda-Extension v2.4.2

Thu, 08 Jan 2026 00:00:00 +0000

Notes

Improved panic handling in main function to ensure Lambda continue
Added new telemetry buffer for APM mode and Shutdown logs
Enhanced versioning support and logging in APM mode

Fixed

Updated platform report line to send as json instead of compressed
EU endpoint detection for license keys fetched from SSM/Secrets Manager

Lambda-Extension v2.4.3

Fri, 09 Jan 2026 00:00:00 +0000

Notes

Implemented pre-invoke log buffering with metadata validation and fallback ARN support
Removed debug log for buffering in pre-invoke buffer
Added fallback code for Aws-arn

Fixed

Remove License key exposure from CloudWatch logs

Lambda-Extension v2.4.4

Fri, 23 Jan 2026 00:00:00 +0000

Notes

Configuration: Add support for NEW_RELIC_EXTENSION_SEND_PLATFORM_LOGS Environment variable
Metadata: Add tags to entity for Extension version and Agent version
Logging: Change secondary Log level to DEBUG

Fixed

Runtime Detection: Enhance runtime detection logic for improved agent compatibility
Telemetry: Implement global fallback ARN handling across telemetry components
Validation: Update code for additional checks

Lambda-Extension v2.4.6

Tue, 10 Mar 2026 00:00:00 +0000

Notes

Added NEW_RELIC_LAMBDA_EXTENSION_PROXY environment variable for proxy configuration
Added NEW_RELIC_EXTENSION_SEND_LOGS environment variable to control sending logs
Added NEW_RELIC_EXTENSION_LOGS_ENABLED environment variable for extension logging

Fixed

Fixed JSON logs with "level": "Information" being incorrectly classified as errors
Improved request_id handling and tracking
Fixed random number generation in TraceIDGenerator

Lambda-Extension v2.4.5

Thu, 29 Jan 2026 00:00:00 +0000

Notes

Java runtime support improvements - automatic detection and proper mode routing
Enhanced log processing reliability - ensures all logs are properly tagged before sending
Reduced resource usage by optimizing channel creation
Improved log processing efficiency

Fixed

Java agent version reporting
Log metadata stamping for pre-invoke logs
Unnecessary warning messages in APM mode

Lambda-Extension v2.5.0

Fri, 10 Apr 2026 00:00:00 +0000

Notes

Added support for sql_trace_data in APM telemetry
Added support for SSL_CERT_FILE

Fixed

Added changes to include error_event_data for apm mode
Improved shutdown logs duration metrics