Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Note: Some version numbers may be skipped to align feature set with the Java version.

Version 4.2.9, 2/9/2025

Added

  1. uuid v4 generator in the "simple type matching" feature
  2. event annotation feature
  3. tagging feature in the EventEnvelope

Removed

The "extra" field has been retired from EventEnvelope

Changed

Filter out protected metadata from RPC response to user functions (my_route, my_instance, my_trace_id, my_trace_path)

Version 4.2.7, 2/4/2025

Added

N/A

Removed

N/A

Changed

endFlow method of TaskExecutor sends event to distributed trace instead of logging

Version 4.2.6, 2/3/2025

Added

Added log.always feature in logger

Removed

N/A

Changed

Update distributed trace function to log in "always" mode

Version 4.2.5, 2/2/2025

Added

Add 3-part syntax for Event Script's data mapping processing.

Supports the following data mapping syntax:

  1. LHS -> RHS
  2. LHS -> model.variable -> RHS

Removed

N/A

Changed

  1. Make input event immutable to PostOffice's send and request API
  2. Consistent temporary stream folder name for Java and Node.js under /tmp/composable

Version 4.2.3, 1/28/2025

Added

Support of negate operator of a model value in event script added to the "simple type matching" feature

Removed

N/A

Changed

N/A

Version 4.2.2, 1/22/2025

Added

N/A

Removed

N/A

Changed

For consistency with the Composable Java version, do not use pretty JSON print when log.format=text

Version 4.2.1, 1/21/2025

Added

N/A

Removed

N/A

Changed

reconfigure logger to json or compact format early when app starts

Version 4.2.0, 1/20/2025

This is a milestone release for consistent features and behaviors between Java and Node.js versions

Added

  1. Composable methodology in developer guide
  2. Event Script engine for event choreography
  3. Composable example application

Removed

N/A

Changed

N/A

Version 4.1.1, 12/22/2024

Added

  1. Composable class scanner for the source folder
  2. Added "web.component.scan" parameter to support scanning of dependency libaries

Removed

N/A

Changed

N/A

Version 4.1.0, 12/20/2024

Added

AppConfig will resolve key-values from system properties and environment variables at startup

Removed

Eliminate preload.yaml configuration file

Changed

  1. Streamlined configuration management
  2. Updated preload annotation for developer to define concurrency

Version 4.0.1, 12/16/2024

Added

Support parsing of multiple environment variables and base system properties for a single key-value in Config Reader.

Removed

N/A

Changed

  1. Improved environment variable parsing logic and detection of config loops.
  2. Compatibility with Unix, Mac and Windows OS

Version 4.0.0, 12/9/2024

Upgraded to sync with Mercury-Composable for the foundation event-driven and Event-over-HTTP design. Tested with Node.js version 22.12.0 (LTS). Backward compatible to version 20.18.1 (LTS).

Event-over-HTTP compatibility tests conducted with Mercury-Composable version 4.0.32.

Added

N/A

Removed

N/A

Changed

  1. Refactored Event-over-HTTP to use standardized HTTP headers X-Stream-Id and X-Ttl
  2. Updated OSS dependencies to latest version
  3. Configured for EsLint version 9.16.0

Version 3.0.0, 6/10/2023

Ported composable core features from Mercury 3.0 Java version

Added

  1. Unit and end-to-end tests for Mercury 3.0 Node.js and for the example app project.
  2. For backward compatibility, added optional "setupMiddleware" method in the rest-automation module.

Removed

Threshold feature in REST automation

Changed

N/A

Version 1.0.0, 5/30/2022

Added

Minimal viable product

Removed

N/A

Changed

N/A