tree: 09658ee7a910df75e6a8a5c40559c4450c62608d [path history] [tgz]
  6. contrib/
  7. controller/
  12. gen/

Build API

Welcome to the Build API.


Make sure you've consulted the Build and CI teams when considering making breaking changes that affect the Build API.

This directory is a separate repo that contains all of the raw .proto files. You will find message, service, and method definitions, and their configurations. You will need to commit and upload the proto changes separately from the chromite changes.

  • chromite/api/ contains the Build API services.
    • Except chromite/api/build_api.proto, which contains service and method option definitions.
  • chromiumos/ generally contains more sharable proto.
    • chromiumos/common.proto contains well shared messages.
    • chromiumos/metrics.proto contains message declarations related to build api event monitoring.
  • test_platform/ contains the APIs of components of the Test Platform recipe.
    • test_platform/request.proto and test_platform/response.proto contain the API of the overall recipe.

When making changes to the proto, you must:

  • Change the proto.
    1. Make your changes.
    2. Run chromite/infra/proto/
    3. Commit those changes as a single CL.
  • Update the chromite proto.
    • Run chromite/api/compile_build_api_proto.
    • When no breaking changes are made (should be most of them)
      • Create a CL with just the generated proto to submit with the raw proto CL.
      • Submit the proto CLs together.
      • The implementation may be submitted after the proto CLs.
    • When breaking changes are made (should be very rare)
      • Make sure you've consulted the Build and CI teams first.
      • Submit the proto changes along with the implementation.
      • May be done as a single CL or as a stack of CLs with Cq-Depend.

At time of writing, the PCQ does not support Cq-Depend: between the infra/proto and chromite repos, so it must be handled manually.

This repo was and will be pinned to a specific revision in the manifest files when we get closer to completing work on the Build API. For the speed we're moving at now, though, having that revision pinned and updating the manifest has caused far more problems than its solving.

When we do go back to the pinned revision:

  1. Commit and land your proto changes.
  2. Update manifest/full.xml with the new revision.
  3. Update manifest-internal/external-full.xml with the new revision.
  4. Run chromite/api/compile_build_api_proto.
  5. Upload the changes from the previous three steps and add CQ-DEPEND between the CLs.


The generated protobuf messages.

Do not edit files in this package directly!

The proto can be compiled using the compile_build_api_proto script in the api directory. The protoc version is locked and fetched from CIPD to ensure compatibility with the client library in third_party/.


This directory contains the entry point for all of the implemented services. The protobuf service module option (defined in build_api.proto) references the module in this package. The functions in this package should all operate as one would expect a controller to operate in an MVC application - translating the request into the internal representation that's passed along to the relevant service(s), then translates their output to a specified response format.


This directory contains scripts that may not be 100% supported yet. See contrib/ for information about the scripts.