[Hawkular-dev] Hawkular Metrics 0.25.0 - Release

Hello, I am happy to announce release 0.25.0 of Hawkular Metrics. This release is anchored by general stability improvements and enhanced query capabilities for the external metrics alerter. Here is a list of major changes: - *External Metrics Alerter - Enhancements* - Both syntax and query capabilities have been revamped to allow defining conditions using flexible expressions with embedded stats queries - The ExternalCondition expression is now JSON and has support for the new tag query language - The full documentation about this feature can be found in the Alerting section <http://www.hawkular.org/hawkular-metrics/docs/user-guide/#_alerting> of the user guide <http://www.hawkular.org/hawkular-metrics/docs/user-guide/> - For more details please see: HWKMETRICS-566 <https://issues.jboss.org/browse/HWKMETRICS-566> and Pull Request 727 <https://github.com/hawkular/hawkular-metrics/pull/727> - *Dropwizard-Metrics - Merged* - The Dropwizard-Metrics reporter <https://github.com/hawkular/hawkular-dropwizard-reporter> has been merged into the Metrics repository in clients/dropwizard <https://github.com/hawkular/hawkular-metrics/tree/44677cc5d6267e738ea51bd... module - The old repository <https://github.com/hawkular/hawkular-dropwizard-reporter> is decommissioned, all new development will happen in the Metrics project - This was done to simplify the compatibility matrix between the reporter and Hawkular Metrics REST API; going forward they will have identical versions. Furthermore, the compatibility is now tested via continuous integration tests. - Please use the new maven artifact hawkular-dropwizard-reporter <http://origin-repository.jboss.org/nexus/content/repositories/public/org/... - For more details please see: HWKMETRICS-585 <https://issues.jboss.org/browse/HWKMETRICS-585> - *Tag Query Language - Enhancements* - The tag query language now supports the dot character in the tag name. The list of allowed characters is *a-zA-Z_0-9.* - The query language allows regex matching for tag values but not tag names - This allows translating JSON-like tag structures into Hawkular Metrics tags and query using the new tag query language - For example, a tag structure like [tag.subtag1: value1, tag.subtag2.subsubtag1: value2] is now queriable via the tag query language with queries like tag.subtag1 = value1 or tag.subtag2.subsubtag1 - For more details please see: HWKMETRICS-611 <https://issues.jboss.org/browse/HWKMETRICS-611> - *REST API - Request Logging* - It is now possible to enable detailed logging for all REST API requests - Two properties have been added to enable this features: hawkular.metrics.request.logging.level to enable logging for all read requests and hawkular.metrics.request.logging.level.writes to enable logging for write requests - By default this feature is disabled, to enable just set the log level via each property - For more details please see: HWKMETRICS-589 <https://issues.jboss.org/browse/HWKMETRICS-589> - Here is a sample log: INFO [org.hawkular.metrics.api.jaxrs.util.RequestLoggingFilter] (default task-49) REST API request: -------------------------------------- path: /metrics segments: [metrics] method: GET query parameters: {type=[availability]} Tenant: T9a116f18-28cf-41b3-8ff8-c9752ac60e26232 - *Other Updates* - Automatically fix schema issues that occur when the server is restarted during initial schema installation (HWKMETRICS-594 <https://issues.jboss.org/browse/HWKMETRICS-594>) - Metric data points inserts have been optimized to use token ranges for Cassandra writes (HWKMETRICS-599 <https://issues.jboss.org/browse/HWKMETRICS-599>) *Hawkular Alerting - Included* - Version 1.5.3 <https://issues.jboss.org/projects/HWKALERTS/versions/12333651> - Project details and repository: Github <https://github.com/hawkular/hawkular-alerts> - Documentation: REST API <http://www.hawkular.org/docs/rest/rest-alerts.html>;, Examples <https://github.com/hawkular/hawkular-alerts/tree/master/examples>;, Developer Guide <http://www.hawkular.org/community/docs/developer-guide/alerts.html> *Hawkular Metrics Clients* - Python: https://github.com/hawkular/hawkular-client-python - Go: https://github.com/hawkular/hawkular-client-go - Ruby: https://github.com/hawkular/hawkular-client-ruby - Java: https://github.com/hawkular/hawkular-client-java *Release Links* Github Release: https://github.com/hawkular/hawkular-metrics/releases/tag/0.25.0 JBoss Nexus Maven artifacts: http://origin-repository.jboss.org/nexus/content/repositorie s/public/org/hawkular/metrics/ Jira release tracker: https://issues.jboss.org/projects/HWKMETRICS/versions/12333676 A big "Thank you" goes to John Sanda, Matt Wringe, Michael Burman, Joel Takvorian, Jay Shaughnessy, Lucas Ponce, and Heiko Rupp for their project contributions. Thank you, Stefan Negrea