BigW Consortium Gitlab

  1. 27 Apr, 2016 1 commit
    • Backport GitHub Enterprise import support from EE · eede0323
      Stan Hu authored
      These changes were pulled from GitLab EE to support configuring
      an alternative API URL than the default https://api.github.com.
      In addition, the `verify_ssl` flag allows users to disable SSL cert
      checking.
      
      One modification: add a default `args` option if it does not exist
      to avoid breaking existing configurations.
  2. 26 Apr, 2016 1 commit
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  9. 25 Mar, 2016 1 commit
    • Improve and finish the fallback to the In-Reply-To and References header for the… · 9f218fc1
      Rémy Coutable authored
      Improve and finish the fallback to the In-Reply-To and References header for the reply-by-email feature
      
      A few things to note:
      - The IncomingEmail feature is now enabled even without a
        correctly-formatted sub-address
      - Message-ID for new thread mail are kept the same so that subsequent
        notifications to this thread are grouped in the thread by the email
        service that receives the notification
        (i.e. In-Reply-To of the answer == Message-ID of the first thread message)
      - To maximize our chance to be able to retrieve the reply key, we look
        for it in the In-Reply-To header and the References header
      - The pattern for the fallback reply message id is "reply-[key]@[gitlab_host]"
      - Improve docs thanks to Axil
  10. 17 Mar, 2016 1 commit
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  18. 28 Dec, 2015 5 commits
  19. 27 Dec, 2015 1 commit
  20. 17 Dec, 2015 2 commits
    • Only track method calls above a certain threshold · a41287d8
      Yorick Peterse authored
      This ensures we don't end up wasting resources by tracking method calls
      that only take a few microseconds. By default the threshold is 10
      milliseconds but this can be changed using the gitlab.yml configuration
      file.
    • Storing of application metrics in InfluxDB · 141e946c
      Yorick Peterse authored
      This adds the ability to write application metrics (e.g. SQL timings) to
      InfluxDB. These metrics can in turn be visualized using Grafana, or
      really anything else that can read from InfluxDB. These metrics can be
      used to track application performance over time, between different Ruby
      versions, different GitLab versions, etc.
      
      == Transaction Metrics
      
      Currently the following is tracked on a per transaction basis (a
      transaction is a Rails request or a single Sidekiq job):
      
      * Timings per query along with the raw (obfuscated) SQL and information
        about what file the query originated from.
      * Timings per view along with the path of the view and information about
        what file triggered the rendering process.
      * The duration of a request itself along with the controller/worker
        class and method name.
      * The duration of any instrumented method calls (more below).
      
      == Sampled Metrics
      
      Certain metrics can't be directly associated with a transaction. For
      example, a process' total memory usage is unrelated to any running
      transactions. While a transaction can result in the memory usage going
      up there's no accurate way to determine what transaction is to blame,
      this becomes especially problematic in multi-threaded environments.
      
      To solve this problem there's a separate thread that takes samples at a
      fixed interval. This thread (using the class Gitlab::Metrics::Sampler)
      currently tracks the following:
      
      * The process' total memory usage.
      * The number of file descriptors opened by the process.
      * The amount of Ruby objects (using ObjectSpace.count_objects).
      * GC statistics such as timings, heap slots, etc.
      
      The default/current interval is 15 seconds, any smaller interval might
      put too much pressure on InfluxDB (especially when running dozens of
      processes).
      
      == Method Instrumentation
      
      While currently not yet used methods can be instrumented to track how
      long they take to run. Unlike the likes of New Relic this doesn't
      require modifying the source code (e.g. including modules), it all
      happens from the outside. For example, to track `User.by_login` we'd add
      the following code somewhere in an initializer:
      
          Gitlab::Metrics::Instrumentation.
            instrument_method(User, :by_login)
      
      to instead instrument an instance method:
      
          Gitlab::Metrics::Instrumentation.
            instrument_instance_method(User, :save)
      
      Instrumentation for either all public model methods or a few crucial
      ones will be added in the near future, I simply haven't gotten to doing
      so just yet.
      
      == Configuration
      
      By default metrics are disabled. This means users don't have to bother
      setting anything up if they don't want to. Metrics can be enabled by
      editing one's gitlab.yml configuration file (see
      config/gitlab.yml.example for example settings).
      
      == Writing Data To InfluxDB
      
      Because InfluxDB is still a fairly young product I expect the worse.
      Data loss, unexpected reboots, the database not responding, you name it.
      Because of this data is _not_ written to InfluxDB directly, instead it's
      queued and processed by Sidekiq. This ensures that users won't notice
      anything when InfluxDB is giving trouble.
      
      The metrics worker can be started in a standalone manner as following:
      
          bundle exec sidekiq -q metrics
      
      The corresponding class is called MetricsWorker.
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  31. 13 Oct, 2015 1 commit