0.16.0

The Sentry SDK team is happy to announce the immediate availability of Sentry Go SDK v0.16.0.
Due to ongoing work towards a stable API for v1.0.0, we sadly had to include two breaking changes in this release.

Breaking Changes

• Add EnableTracing, a boolean option flag to enable performance monitoring (false by default).

  • If you're using TracesSampleRate or TracesSampler, this option is required to enable performance monitoring.

    sentry.Init(sentry.ClientOptions{
        EnableTracing: true,
        TracesSampleRate: 1.0,
    })

• Unify TracesSampler #498

  • TracesSampler was changed to a callback that must return a float64 between 0.0 and 1.0.

    For example, you can apply a sample rate of 1.0 (100%) to all /api transactions, and a sample rate of 0.5 (50%) to all other transactions.
    You can read more about this in our SDK docs.

    sentry.Init(sentry.ClientOptions{
        TracesSampler: sentry.TracesSampler(func(ctx sentry.SamplingContext) float64 {
             hub := sentry.GetHubFromContext(ctx.Span.Context())
             name := hub.Scope().Transaction()
    
             if strings.HasPrefix(name, "GET /api") {
                 return 1.0
             }
    
             return 0.5
         }),
     }

Features

• Send errors logged with Logrus to Sentry.
  • Have a look at our logrus examples on how to use the integration.
• Add support for Dynamic Sampling #491
  • You can read more about Dynamic Sampling in our product docs.
• Add detailed logging about the reason transactions are being dropped.
  • You can enable SDK logging via sentry.ClientOptions.Debug: true.

Bug Fixes

• Do not clone the hub when calling StartTransaction #505
  • Fixes #502