[Hawkular-dev] Hawkular Metrics 0.25.0 - Release

[Stefan Negrea]

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/44677cc5d6267e738ea51bdd9a37be062ca1b8c2/clients/dropwizard>
      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/hawkular/metrics/hawkular-dropwizard-reporter/0.25.0.Final/>
      - 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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.jboss.org/pipermail/hawkular-dev/attachments/20170309/8cbdbc97/attachment-0001.html