v2.4.6

What's New

New Features

• Added NEW_RELIC_LAMBDA_EXTENSION_PROXY environment variable for proxy configuration
• Added NEW_RELIC_EXTENSION_SEND_LOGS environment variable to control log sending
• Added NEW_RELIC_EXTENSION_LOGS_ENABLED environment variable for extension logging
• Added release testing workflow for multiple runtimes
• Added prepare release automation script
• Enhanced Java test layer for Docker image publishing

Bug Fixes

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

Improvements

• Refactored request state management for better performance
• Enhanced test coverage with new unit tests
• Updated test layer deployment to include ca-central-1 region
• Optimized agent buffer handling and telemetry processing

Dependency Updates

• Bumped bytes from 1.10.1 to 1.11.1
• Bumped time from 0.3.46 to 0.3.47

Contributors

• Chodavarapu Naga Viswanadha Avinash
• Sashwatdas123
• Ashish Kumar Singh
• dependabot[bot]

v2.4.5

What's New:

Java runtime support improvements - automatic detection and proper mode routing
Enhanced log processing reliability - ensures all logs are properly tagged before sending

Bug Fixes:
Fixed Java agent version reporting
Fixed log metadata stamping for pre-invoke logs
Fixed unnecessary warning messages in APM mode

Performance:
Reduced resource usage by optimizing channel creation
Improved log processing efficiency

v2.4.4

🚀 Features & Enhancements

• Runtime Detection: Enhance runtime detection logic for improved agent compatibility
• Configuration: Add support for NEW_RELIC_EXTENSION_SEND_PLATFORM_LOGS
• Metadata: Add tags to entity for extension version and agent version
• Telemetry: Implement global fallback ARN handling across telemetry components
• Documentation: Update README for Rust extension
• Logging: Change secondary log level to DEBUG
• Validation: Update code for additional checks

📦 Maintenance

• Bump version to 2.4.4

❤️ Contributors

• @aavinash
• @SashwatDas
• @ashishsingh

v2.4.3

• feat: implement pre-invoke log buffering with metadata validation and fallback ARN support
• fix: remove license key exposure from CloudWatch logs
• feat: remove debug log for buffering in pre-invoke buffer
• feat: Added fallback code for aws-arn

v2.4.2

• feat: Improve panic handling in main function to ensure Lambda continue
• fix: EU endpoint detection for license keys fetched from SSM/Secrets Manager
• feat: add new telemetry buffer for APM mode and shutdown logs
• feat: Enhance versioning support and logging in APM mode
• fix: updated platform report line to send as json instead of compressed

v2.4.1

• fix: Resolved an issue where requests were occasionally not instrumented in APM mode.

• fix: Enabled automatic NEW_RELIC_LICENSE_KEY fallback.

• feat: Removed unnecessary trace logging for skipped function and extension logs.

• feat: 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.

v2.4.0

What's Changed

[2.4.0] - 2025-12-02

🎉 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 1.23 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.

v2.3.24

What's Changed

• Updated go std lib version to 1.23.12 to resolve CVE-2025-47907 by @aavinash-nr in #351
• Added Log Level Prefix DEBUG and INFO to the existing prefix [NR_EXT] by @aavinash-nr in #352
• APM Mode: Add tags to APM Mode by @chaudharysaket in #343
• APM Mode: Resolved license key issue with SM/SSM in APM Mode & resolved log prefix by @Sashwatdas123 in #350
• APM Mode: Added Lambda ARN to host for APM connect by @chaudharysaket in #348
• APM Mode: Update backoff duration for NEW_RELIC_HOST by @Sashwatdas123 in #357
• APM Mode: Refactor APM error event data by @chaudharysaket in #359
• APM Mode: Added ruby support by @chaudharysaket in #360
• GitHub Workflow: Added GitHub Actions workflow for publishing Lambda layers by @aavinash-nr in #353

Full Changelog: v2.3.23...v2.3.24

v2.3.23

What's Changed

• Upgrade AWS SDK and Go Version to address Security Vulnerabilities [CVE-2020-8911, CVE-2020-8912, CVE-2025-0913, CVE-2025-4673] by @aavinash-nr in #332
• Add option to build nodejs test Layers for local testing by @aavinash-nr in #336

Full Changelog: v2.3.22...v2.3.23

v2.3.22

What's Changed

• APM connect retry logic by @chaudharysaket in #330
• Add requestId extraction from logs for Node.js runtime by @aavinash-nr in #329
• Add godebug to resolve AWS Firewall issue by @chaudharysaket in #333
• Update Readme for --enable-license-key-secret by @Sashwatdas123 in #328

Full Changelog: v2.3.21...v2.3.22