BEP: Show protocol upload in the UI

The BEP (build event protocol) upload may at times take longer than the build
itself. This is especially true for cached builds, where there is little build
work, but the protocol still needs to be uploaded. In this case the bazel UI
will now display that it's waiting for BEP upload, both in the current and the
new experimental UI (--experimental_ui).

When executing a run command, blaze waits for the BEP upload to finish before
it runs the target.

Major Modifications:
 - The BuildEventTransport interface now also has a name() method that returns
   a string. When waiting for a transport to finish the BEP upload, this string
   is displayed in the UI.
 - The BuildEventStreamer now emits two new events
   AnnounceBuildEventTransportsEvent and BuildEventTransportClosed on the event
   bus. This is how the experimental UI is informed about BEP upload progress.

RELNOTES: None
PiperOrigin-RevId: 154052401
13 files changed
tree: c3e488c85eaa26ab83176750727429d325aaa1ef
  1. examples/
  2. scripts/
  3. site/
  4. src/
  5. third_party/
  6. tools/
  7. .gitattributes
  8. .gitignore
  9. AUTHORS
  10. BUILD
  11. CHANGELOG.md
  12. combine_distfiles.sh
  13. compile.sh
  14. CONTRIBUTING.md
  15. CONTRIBUTORS
  16. ISSUE_TEMPLATE.md
  17. LICENSE
  18. README.md
  19. WORKSPACE
README.md

Bazel (Beta)

{Fast, Correct} - Choose two

Bazel is a build tool that builds code quickly and reliably. It is used to build the majority of Google‘s software, and thus it has been designed to handle build problems present in Google’s development environment, including:

  • A massive, shared code repository, in which all software is built from source. Bazel has been built for speed, using both caching and parallelism to achieve this. Bazel is critical to Google's ability to continue to scale its software development practices as the company grows.

  • An emphasis on automated testing and releases. Bazel has been built for correctness and reproducibility, meaning that a build performed on a continuous build machine or in a release pipeline will generate bitwise-identical outputs to those generated on a developer's machine.

  • Language and platform diversity. Bazel's architecture is general enough to support many different programming languages within Google, and can be used to build both client and server software targeting multiple architectures from the same underlying codebase.

Find more background about Bazel in our FAQ.

Getting Started

About the Bazel project

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