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Releases: OpenIntegrationEngine/engine

v4.6.0-rc1

07 May 17:40

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v4.6.0-rc1 Pre-release
Pre-release

4.6.0 Release Candidate 1

We expect this release candidate to be available for a short time for the community to review, test, and validate the release. We will fix any critical bugs.

A critical bug is defined as:

  • A new security issue introduced in the release candidate with a high CVE score
  • A regression bug where existing behavior was unintentionally broken
  • Any other issue which is deemed as critical by the maintainers

All other issues will be recorded and worked on to the best of our ability.

We also request feedback on the release notes - any questions about the notes during the RC will get addressed before the GA release. Screenshots, questions, clarifications are helpful!

New Contributors

Please congratulate and thank our new contributors. We sincerely appreciate their time and effort to improve OIE for everyone!

Docs

Engine

Whats new?

Breaking changes

  • Java 17 minimum. Older JVMs are no longer supported. #cafed0eb #3f65d2f6 #384682fe
  • Xerces and xml-apis dependencies removed. Custom code that imports org.apache.xerces.* directly will need to migrate to javax.xml.parsers.* / org.xml.sax.*. #05ecb1f5 #d97c1f16
  • Username login behavior changed. Logins are now case-insensitive by default. Existing accounts with case-sensitive usernames continue to work via a compatibility path. #dc038da4 #43bcd32b

New features

  • serverName variable available in alert templates, useful for multi-instance deployments. #9a36030b
  • Environment variable substitution in config files for the CLI Resolves issue #205 #da0757e9
  • JavaScript pretty-printer — manually format JS in the editor. #7910253d
  • Toggle Comment action added to the editor's right-click context menu. #98dde206

Improvements

  • HTTP parameter map order is now preserved. Code that depended on the previous non-deterministic ordering may behave differently. #82ec38b3
  • Link to Administrator launcher options added to the landing web-page UI. #9349375e
  • Message search performance: ResultSet metadata is now cached in getMetaDataMapByMessageId to avoid per-row lookups. #1cafc2e4
  • Faster extension load — chatty API calls during startup were eliminated. #59674d01
  • Default Administrator color updated to suit OIE brand identity #eb363621
  • Date/time search behavior is now consistent with the table view. #7fd767d4
  • NCPDP display name updated to specify the standard rather than the standards body. #522f0f36
  • Improved MessageFilter logging and refactored search element styles, with new JUnit tests. #7311e1b4 #bfe3348d
  • Removed the SSL warning panel and the NextGen advertisement from the client. #bffc3494
  • Additional --add-opens module options added to the default vmoptions file. #ec57fb07
  • Client is now AutoCloseable with an idempotent close(). #8e040c7d #05aacfb3
  • Replaced SimpleDateFormat with DateTimeFormatter for thread safety. #fa8957d8
  • Added missing javadoc for User API classes. #d934af20

Bug fixes

  • Fixed migration failure when upgrading to 4.5.2. #db8615f6
  • Fixed 500 error on /api/openapi.yaml. #8f103d64
  • Fixed Events UI Message Filter not displaying status correctly. #7c855937
  • Fixed JXTreeTable.getEditingRow bug. This fix is significant for MacOS errors from the OIE client #be058f69
  • Fixed clipboard error when an image is in the clipboard. This fix helps Linux users when an image was copied to the clipboard #5203b3a3
  • Fixed potential data loss when saving plugin properties. #5ff97155
  • Fixed log4j2 directory property migration, with zip compression added. #cf36b707 #a6ae879f #f7a1b43e

Dependency updates

  • log4j: 2.17.2 → 2.25.3 #0f0d8a40
  • PostgreSQL JDBC driver: 42.6.0 → 42.7.8 #8e1bf746
  • jSch: updated to 2.27.0, then 2.27.7 #141e612c #8ec5ab79
  • commons-lang3: 3.13.0 → 3.20.0 #6eed2703
  • commons-text: 1.10.0 → 1.15.0 #cccc1813
  • apache-jsp jar replaced with the correct version; .classpath files updated. #4b46efa5 #d925e2d0
  • Xerces / xml-apis: removed (see Breaking changes).
  • Broader commons and javax → jakarta dependency upgrades. #346cc458
  • General dependency jar refresh. #57bc9e7c

Build & CI

  • CI build bumped to Java 17. #cafed0eb
  • Unit tests and JaCoCo updated to Java 17. #3f65d2f6
  • Build property added for jar entry modification times. #e6868ea0
  • Timestamps removed from generated javadoc pages. #21b56dee
  • Standardized test output. #0c580f66
  • Added comprehensive clean targets and legacy cleanup. #4a28bfdd
  • Secure test result reporting via GitHub Actions. #04b533b6
  • Build fails if tests fail. #41858d4d
  • Version string centralized instead of duplicated across modules. #49b58846
  • disableTests=true build flag to skip tests when needed. #90fdd188
  • Skip JAR signing permissions step for unsigned builds. #371f0414

Documentation

  • Updated CONTRIBUTING.md with a better git clone reference. #34712507

Full Changelog

Issues and Pull Requests: milestone 4.6.0
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4.5.2

09 Jul 13:52

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Important

Uninstall Technical Prevew 1 before running the production release here. Your settings will be preserved.

What's Changed

  • Use proper renderer for custom metadata columns (#75) by @sbraconnier in #94
  • Avoid crash when invalid URI is passed to test file write by @mgaffigan in #125
  • destinationSet.removeAllExcept doesn't remove destinations if no match is found by @rogin in #133
  • Updated for Java Version and external readme.html for 4.5.2 by @pacmano1 in #132

New Contributors

Full Changelog: v4.5.2-tp.1...v4.5.2

4.5.2 Technical Preview 1

13 Jun 16:05
8e6a11e

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We are pleased to announce the release of Technical Preview 1 of the Open Integration Engine — a community-maintained continuation of the open-source Mirth Connect project.

This release is functionally identical to Mirth Connect 4.5.2, with updated branding and groundwork laid for long-term open development. The “Technical Preview” designation simply reflects the project's new stewardship and packaging—not any lack of stability. It is fully suitable as a drop-in replacement for the original 4.5.2.

Scroll down to the "Assets" section on this page and expand it to see downloads and checksums.


Versioning

This release uses version number 4.5.2, matching the final open-source version of Mirth Connect. Maintaining the same version number ensures compatibility with existing tooling, integrations, and scripts, providing a seamless transition path.


What's New

  • Rebranding across the user interface and codebase to Open Integration Engine, designed for easier white-labeling
  • Java artifacts are now digitally signed (thanks to BrightCodeCompany)
  • vmptions has been refactored to include <install-dir>/conf/oieservice.vmptions and <install-dir>/conf/oieserver.vmptions, most users should do their overrides in the conf directory, not the root directory of the install.
  • Telemetry (sending usage or other information to an outside site) is disabled by default and can be enabled programmatically during white-label builds
  • Repackaged installers with updated metadata and simplified startup
  • Full installers available with or without a bundled JRE

Known Changes and Limitations

  • On Windows, you may encounter SmartScreen technology that warns you on download and during install. For larger downloads when you tell the browser to "Keep" (i.e. MS Edge) the download, it may take some time to finalize the downloaded file to your file system. We noted the delay from "Keep" to ready to execute during testing. The file appears to be fully written when the Open Integration Engine logo appears for the installer executable.
  • On MacOS, it wlll flag the installer as unknown, overrride that in System Settings... Privacy and Security, scroll to the bottom - the installer should show up there to allow you to override.
  • The original Web Admin interface has been removed and replaced with a minimal, read-only status page
  • The command line interface is bundled as oiecommand, there is no seperate installer. We will provide a standalone installer shortly. An existing client can still be used if needed.
  • The graphical “Mirth Manager” system tray tool has been removed due to incompatibilities with macOS launchd and modern Linux desktop environments
    • To configure: edit mirth.properties using any text editor
    • To restart: use the native service manager on your OS (e.g., Windows Services, systemctl, or launchctl)
  • Compatible with common launchers:
    • MCAL (a warning about the BrightCodeCompany certificate may appear; this certificate is valid and trusted. After first approval by you, you will not be prompted again )
    • Ballista
    • BridgeLink Launcher

Compatibility

  • Functionally identical to Mirth Connect 4.5.2: all connectors, transformers, and channel scripts should work as expected
  • The bundled installer includes a pre-configured JRE for faster setup

Downloads

Installers for all major platforms are available under the release assets.

Package Description
With JRE Recommended for easiest setup; includes Java
Without JRE For use with an existing Java installation

Call for Feedback

While this release has been internally validated, real-world environments vary. If you deploy or test TP1, we welcome your feedback—especially around tooling integrations, system behavior, or edge-case compatibility. Your input will help shape future releases.

Please raise any found issues here.


Community Acknowledgements

We’d like to thank the many contributors and community members who made this release possible. Special thanks to @mgaffigan and @kelaompachai for putting together some big PRs to help wrap up this release.


What's Changed


New Contributors


Full Changelog

View all changes in this release:
4.5.2...v4.5.2-tp.1


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