v1.3.6

What's Changed

• rename files to avoid dependabot security warnings by @zeitlinger in #1239
• Use buffered writer by @michaldo in #1241
• Use buffered writer by @dhoard in #1248
• add dropwizard to bom by @zeitlinger in #1250
• Caffeine instrumentation: add weighted size metric by @jhominal in #1251
• Add documentation pages for Caffeine and Guava cache instrumentation libraries by @jhominal in #1262
• bom should not include guava - it was only for internal code reuse by @zeitlinger in #1269

New Contributors

• @Stephan202 made their first contribution in #1242
• @michaldo made their first contribution in #1241
• @jhominal made their first contribution in #1251

Full Changelog: v1.3.5...v1.3.6

v1.3.5

What's Changed

• Bump com.google.protobuf:protobuf-java from 4.28.3 to 4.29.1 by @dependabot in #1222
• Add support for dw-metrics 4.x by @kingster in #1228

Full Changelog: v1.3.4...v1.3.5

v1.3.4

What's Changed

• Add instrumentation for Guava & Caffeine to BOM by @der-eismann in #1175
• fix register part of documentation for caffeine & guava instrumentati… by @pheyken in #1203
• [prometheus-metrics-instrumentation-caffeine] implement getPrometheus… by @pheyken in #1206
• [prometheus-metrics-instrumentation-guava] implement getPrometheusNames by @pheyken in #1211
• make Protobuf optional by @zeitlinger in #1190

New Contributors

• @der-eismann made their first contribution in #1175

Full Changelog: v1.3.3...v1.3.4

v1.3.3

What's Changed

• Bump com.google.protobuf:protobuf-java from 4.28.2 to 4.28.3 by @dependabot in #1178
• Bump io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha from 2.8.0-alpha to 2.9.0-alpha by @dependabot in #1164
• avoid ConcurrentModificationException by @zeitlinger in #1191
• revert incompatible api change by @zeitlinger in #1192

Full Changelog: v1.3.2...v1.3.3

v1.3.2

What's Changed

• Simple MetricsSnapshot performance change by @dhoard in #963
• feat: add bearerToken builder to pushgateway exporter by @FUSAKLA in #968
• Fix UnknownDataPointSnapshot constructor by @mimaison in #977
• Added methods by @dhoard in #978
• Updated CircleCI image by @dhoard in #982
• Change links on front page to be relative by @MaBiConti in #981
• add support for guava instrumentation with 1.X.X by @pheyken in #979
• add support for caffeine instrumentation with 1.X.X by @pheyken in #983
• Nullify noLabels in StatefulMetric during clear() to prevent no-label inc to stop working by @iaco86 in #972
• Add abstract build method to MetricSnapshot.Builder by @mimaison in #969
• Fix PrometheusNaming.sanitizeMetricName() methods by @mimaison in #975
• additional improve MetricSnapshots.Builder performance by @burov4j in #985
• Make JvmMetrics.register idempotent with the default registry by @mimaison in #987
• http server, add subject.doAs handler wrapper for exchange attribute … by @gtully in #1089
• fix buffer sync logic using modern concurrency primitives by @zeitlinger in #991
• use otel autoconfigure by @zeitlinger in #1147
• Add clear() method into PrometheusRegistry to unregister all collectors by @zeitlinger in #1158

New Contributors

• @FUSAKLA made their first contribution in #968
• @mimaison made their first contribution in #977
• @MaBiConti made their first contribution in #981
• @pheyken made their first contribution in #979
• @iaco86 made their first contribution in #972
• @burov4j made their first contribution in #985
• @zeitlinger made their first contribution in #988
• @gtully made their first contribution in #1089

Full Changelog: v1.3.1...v1.3.2

1.3.1 / 2024-05-23

This is just a minor update to the 1.3.0 release:

With the previous releases it was possible to create illegal UNIT names, like new Unit("&^$") or new Unit("total").

This release prevents that (throwing an IllegalArgumentException), and also adds a method PrometheusNaming.sanitizeUnitName(name) for converting arbitrary strings into valid Prometheus UNIT names.

1.3.0 / 2024-05-16

This is the 1.3.0 release of the Prometheus Java client library.

The headline feature is the new prometheus-metrics-exporter-pushgateway module. See https://prometheus.github.io/client_java/exporters/pushgateway/ for documentation.

• [FEATURE] Port PushGateway to client_java 1.x
• [ENHANCEMENT] Run HTTPServer as a Daemon Thread. Thanks @mberndt123.
• [BUGFIX] Fix naming issue in the Dropwizard 5 exporter. Thanks @kingster
• [BUGFIX] Allow metric names with single character
• [ENHANCEMENT] Fix flaky tests. Thanks @dhoard for extensively load testing our build.
• [ENHANCEMENT] Enforce unit suffix in metric name when unit is not null. Thanks @jonatan-ivanov
• [ENHANCEMENT] Explicit DuplicateLabelsException when creating MetricSnapshot

Thanks to everyone who contributed.

1.2.1 / 2024-04-23

Minor release to help Spring Boot adopt client_java 1.x in the Micrometer Prometheus registry.

• [ENHANCEMENT] add a method for initializing PrometheusProperties with an external properties map. This can be used to load properties from Spring configuration. Thanks @jonatan-ivanov
• [ENHANCEMENT] remove import statement for SpanContextSupplier so that the code still runs if the prometheus-metrics-tracer-initializer dependency is excluded from the classpath (Micrometer implements it's own SpanContextSupplier and doesn't need the dependency).
• [BUGFIX] fix Javadoc links. Thanks @shakuzen.

1.2.0 / 2024-03-22

The 1.2.0 release has some nice features and enhancements. Thanks a lot to everyone who contributed.

• [FEATURE] new Dropwizard instrumentation module prometheus-metrics-instrumentation-dropwizard5. Thanks @kingster
• [FEATURE] new Javax exporter servlet module prometheus-metrics-exporter-servlet-javax. Thanks @kingster
• [FEATURE] expose native memory metrics when the JVM was started with -XX:NativeMemoryTracking=summary. Thanks @meier-christoph
• [FEATURE] minor API additions: get() methods for Counter and Gauge, clear() method for all metrics.
• [FEATURE] add Exemplars to Histogram _count if the config option exemplarsOnAllMetricTypes is enabled.
• [ENHANCEMENT] remove Exemplars from Summary _sum, because it's sufficient to have Exemplars on _count.
• [BUGFIX] error handling when the HTTP connection closes unexpectedly during scrape. Thanks @dhoard
• [ENHANCEMENT] add BOM (bill of materials) module prometheus-metrics-bom.

1.1.0 / 2023-11-12

This release contains lots of smaller fixes and enhancements to the 1.0.0 release. Thanks a lot to everyone who contributed.

• [ENHANCEMENT] Avoid duplicate call to the scrape() method in the default Collector implementation. This does not affect the core metrics, because the core metrics override getPrometheusName(), so they don't use the default implementation.
• [BUGFIX] Fix unit for process_cpu_seconds_total #881. Thanks @yrn1.
• [ENHANCEMENT] Add automatic module names #871. This removes a warning for users of Java 9 modules. Thanks @solomax.
• [FEATURE] Add API to support the multi target exporter pattern #873. Thanks @ganzuoni.
• [ENHANCEMENT] Add Exemplar support for the OpenTelemetry OTLP exporter #883. Thanks @0x006EA1E5.
• [BUGIFX] Fix histogram bucket boundaries in the prometheus-metrics-simpleclient-bridge #887. Thanks @turchenkoalex.
• [BUGFIX] Fix sliding window for Summary metrics #894. Thanks @yrn1.
• [ENHANCEMENT] Add equals() and hashCode() to Unit #897. Thanks @dhoard.
• [ENHANCEMENT] Bump dependency versions #899.