centraldogma-0.25.0

New features

• Server

  • API responses are now compressed with deflate or gzip if requested, based on the accept-encoding header. #211

• Client: Golang

  • Added watcher support to Golang library. #207

    // Create a Query with a Path to watch.
    query := &Query{Path: "/a.json", Type: JSONPath}
    // Create a FileWatcher which is notified when the specific file
    // in the "bar" repository in the "foo" project is modified.
    fw, _ := c.FileWatcher("foo", "bar", query)
    
    // Create a listener which prints the value when the watcher is notified.
    listener := func(revision int, value interface{}) { fmt.Println(value) }
    // Register it.
    fw.Watch(listener)

• Client: Java

  • Added CentralDogmaEndpointGroup for Armeria. #105

    // Build a new EndpointGroup that fetches the endpoint list from Central Dogma.
    final CentralDogma dogma = new LegacyCentralDogmaBuilder()...build();
    final CentralDogmaEndpointGroup group = CentralDogmaEndpointGroup.of(
            dogma, "myProj", "myRepo", Query.ofJson("/endpoints.json")
            EndpointListDecoder.JSON);
    // Wait until the initial query succeeds.
    group.awaitInitialEndpoints();
    
    // Register the group and use it in the URI.
    EndpointGroupRegistry.register(
            "mygroup", group, EndpointSelectionStrategy.WEIGHTED_ROUND_ROBIN);
    final HttpClient client = HttpClient.of("http://group:mygroup/");
    final AggregatedHttpMessage res = client.get("/foo").aggregate().join();

Improvements

• Server
  • Improved the performance of watch operations by caching initial tree comparison results. #214
  • Added jitters to watch timeouts and mirroring schedules to avoid thundering herd. #215 #217 #222

Bug fixes

• Server
  • 'history' operation may return an incorrectly cached value. #212
  • I/O thread is blocked by a long watch operation. #213
  • Fixed a bug where a repository created via Thrift API is inaccessible via HTTP API. #218
  • Fixed a bug in metadata migration logic which sometimes prevented migration. #221

Dependencies

• Armeria 0.63.1 -> 0.64.0