OpenTelemetry

OpenTelemetry is a working name of a combined OpenCensus and OpenTracing project.

This project contains the following top level components:

• api: The OpenTelemetry API.
  • trace: The tracing api. Includes Tracer, Span and SpanContext.
  • distributedcontext: Collection of entries in the form of key-value pairs of data that can be propagated to provide contextual information.
  • context: In-process and inter-process propagation layer.
  • metrics: Metrics layer.
• sdk: The reference implementation complying to the OpenTelemetry API.
• OpenTracing shim: A bridge layer from OpenTelemetry to the OpenTracing API.

We would love to hear from the larger community: please provide feedback proactively.

Project setup and contribute

Please refer to the contribution guide on how to setup and contribute!

Snapshots

Snapshots based out the master branch are available for opentelemetry-api, opentelemetry-sdk and the rest of the artifacts:

Maven

  <repositories>
    <repository>
      <id>oss.sonatype.org-snapshot</id>
      <url>https://oss.jfrog.org/artifactory/oss-snapshot-local</url>
    </repository>
  </repositories>

  <dependencies>
    <dependency>
      <groupId>io.opentelemetry</groupId>
      <artifactId>opentelemetry-api</artifactId>
      <version>0.2.0-SNAPSHOT</version>
    </dependency>
  </dependencies>

Gradle

repositories {
	maven { url 'https://oss.jfrog.org/artifactory/oss-snapshot-local' }
}

dependencies {
	compile('io.opentelemetry:opentelemetry-api:0.2.0-SNAPSHOT')
}

Libraries will usually only need opentelemetry-api, while applications may want to use opentelemetry-sdk.

Release Schedule

OpenTelemetry Java is under active development. Our goal is to release an alpha version of the library by middle October 2019. This release isn't guaranteed to conform to a specific version of the specification, and future releases will not attempt to maintain backwards compatibility with the alpha release.

Component	Version	Target Date
Tracing API	Alpha	October 21 2019
Tracing SDK	Alpha	October 21 2019
Metrics API	Alpha	October 21 2019
Metrics SDK	Alpha	October 21 2019
Jaeger Trace Exporter	Alpha	October 21 2019
Zipkin Trace Exporter	Alpha	Unknown
Prometheus Metrics Exporter	Alpha	Unknown
Context Propagation	Alpha	October 21 2019
OpenTracing Bridge	Alpha	October 21 2019
OpenCensus Bridge	Alpha	Unknown

Kick off the work towards 1.0

After beta release we will encourage customers and tracing vendors to start using the new project, providing feedback as they go. So we can ensure a high quality v1.0 for the merged project:

• We will allow ourselves to break implementations, but not people using the public Interfaces.
• Additions (into interfaces for instance) will involve a best-effort attempt at backwards compatibility (again, for implementations – callers of the public APIs should not be negatively affected by these additions).

Summary

We plan to merge projects and pave the path for future improvements as a unified community of tracing vendors, users and library authors who wants apps be managed better. We are open to feedback and suggestions from all of you!