v1.6.0

Version 1.6.0 contains several new features and improvements. The most notable one is probably structured metadata support. There are some breaking changes in compatibility matrix, protobuf support, and some format settings. Please check the Migration guide for the details.

New features

#233 Key-value pairs support in JSON layout
#236 Upgrade proto file from the upstream
#237 Drop Java 8 support
#238 Upgrade Logback to 1.4.x
#239 Report time to Loki with nanosecond precision
#259 Structured metadata support
#267 Ignore whitespace in label and structured metadata patterns
#271 Drop sorting records by time
#279 Json message layer: support of writing arbitrary objects

Bug fixes

#243 Loki appender didn't retry on HttpConnectTimeoutException

Refactoring

#265 Key-value pairs extraction rework

Misc

#229 Switch integration test from Loki 2.9.1 to Loki 3.0.0
#234 Upgrade Github actions
#235 Fix Grafana Cloud test
#248 Performance tests for JsonLayout fix options
#254 Fix published licence URL
#260 Switch integration test from Loki 3.0.0 to Loki 3.2.0
#261 Add Java 22 to compatibility test
#268 Dependencies upgraded
#276 Upgrade protobuf dependency to 4.29
#277 Switch integration test from Loki 3.2.0 to Loki 3.3.1
#278 Switch compatibility test from Java 22 to Java 23

v1.6.0-rc2

This is a second release candidate for Loki4j v1.6.0. You can use it for feature evaluation and testing. Please don't hesitate to report any issues or regressions to the project's issue tracker. Below is the list of changes since 1.6.0-rc1.

New features

#279 Json message layer: support of writing arbitrary objects

Misc

#276 Upgrade protobuf dependency to 4.29
#277 Switch integration test from Loki 3.2.0 to Loki 3.3.1
#278 Switch compatibility test from Java 22 to Java 23

Compatibility

This release contains breaking changes. You can track the progress on docs update here.

v1.6.0-rc1

This is a first release candidate for Loki4j v1.6.0. You can use it for feature evaluation and testing. Please don't hesitate to report any issues or regressions to the project's issue tracker. Below is the list of changes since 1.6.0-m1.

New features

#259 Structured metadata support
#267 Ignore whitespace in label and structured metadata patterns
#271 Drop sorting records by time

Refactoring

#265 Key-value pairs extraction rework

Misc

#254 Fix published licence URL
#260 Switch integration test from Loki 3.0.0 to Loki 3.2.0
#261 Add Java 22 to compatibility test
#268 Dependencies upgraded

Compatibility

This release contains breaking changes. You can track the progress on docs update here.

v1.6.0-m1

This is a feature preview for Loki4j v1.6.0. You can use it for feature evaluation and testing. Please don't hesitate to report any issues or regressions to the project's issue tracker.

New features

#233 Key-value pairs support in JSON layout
#236 Upgrade proto file from the upstream
#237 Drop Java 8 support
#238 Upgrade Logback to 1.4.x
#239 Report time to Loki with nanosecond precision

Bug fixes

#243 Loki appender didn't retry on HttpConnectTimeoutException

Misc

#229 Switch integration test from Loki 2.9.1 to Loki 3.0.0
#234 Upgrade Github actions
#235 Fix Grafana Cloud test
#248 Performance tests for JsonLayout fix options

Compatibility

There are breaking changes, you can track the progress on docs update here.

v1.5.2

Bug fixes

#232 JSON layout shouldn't fail to render nullable strings
#245 Corrupted JSON logs on concurrent write (by @knittl)

v1.5.1

Bug fixes

#222 Memory issue when labels change quite often (on every log request)

v1.5.0

This release brings you JSON message layout and several enhancements in retry functionality. It also contains a few breaking changes, the most notable one is an upgrade to Logback v1.3.x. Please check the Migration guide before upgrading.

New features

#193 Add support for retries on 429 rate limited requests (by @acm19)
#197 Upgrade Logback to 1.3.x
#204 Add exponential backoff and jitter for retries (by @acm19)
#206 JSON message layout support

Bug fixes

#211 Appender shouldn't fail on label parsing error
#218 JsonLayout: Message parameters are missing

Refactoring

#213 DummyHttpClient interface improvement
#214 Polishing retry functionality

Misc

#198 GrafanaCloud URL updated for integration tests
#208 Switch compatibility test from Java 20 to Java 21
#210 Add performance test for JsonLayer
#212 Dependencies upgraded

v1.5.0-rc1

This is a first release candidate for Loki4j v1.5.0. You can use it for feature evaluation and testing. Please don't hesitate to report any issues or regressions to the project's issue tracker. Below is the list of changes since 1.5.0-m1.

New features

#206 JSON message layout support
#204 Add exponential backoff and jitter for retries (by @acm19)

Bug fixes

#211 Appender shouldn't fail on label parsing error

Refactoring

#213 DummyHttpClient interface improvement
#214 Polishing retry functionality

Misc

#208 Switch compatibility test from Java 20 to Java 21
#210 Add performance test for JsonLayer
#212 Dependencies upgraded

Compatibility

There are a breaking changes related to Logback v1.3.x upgrade and retry functionality. You can track the progress on docs update here.

v1.5.0-m1

This is a feature preview for Loki4j v1.5.0. You can use it for feature evaluation and testing. Please don't hesitate to report any issues or regressions to the project's issue tracker.

New features

#193 Add support for retries on 429 rate limited requests (by @acm19)
#197 Upgrade Logback to 1.3.x

Misc

#198 GrafanaCloud URL updated for integration tests

v1.4.2

Bug fixes

#188 Test fails with 'CodedOutputStream was writing to a flat byte array and ran out of space'

Misc

#185 Switch integration test from Loki 2.8.1 to Loki 2.9.1
#186 Dependencies upgraded