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68 lines
2.4 KiB
ReStructuredText
68 lines
2.4 KiB
ReStructuredText
.. _AddingNewCIJobs:
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==================
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Adding New CI Jobs
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==================
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.. contents::
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:local:
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Adding The Job
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==============
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libc++ uses Buildkite for running its CI. Setting up new CI jobs is easy, and
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these jobs can run either on our existing infrastructure, or on your own.
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If you need to run the job on your own machines, please follow the
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`Buildkite guide <https://buildkite.com/docs/agent/v3>`_ to setup your
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own agents. Make sure you tag your agents in a way that you'll be able
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to recognize them when defining your job below. Finally, in order for the
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agent to register itself to Buildkite, it will need a ``BUILDKITE_AGENT_TOKEN``.
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Please contact a maintainer to get your token.
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Then, simply add a job to the Buildkite pipeline by editing ``libcxx/utils/ci/buildkite-pipeline.yml``.
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Take a look at how the surrounding jobs are defined and do something similar.
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An example of a job definition is:
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.. code-block:: yaml
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- label: "C++11"
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command: "libcxx/utils/ci/run-buildbot generic-cxx11"
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artifact_paths:
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- "**/test-results.xml"
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agents:
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queue: "libcxx-builders"
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retry:
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automatic:
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- exit_status: -1 # Agent was lost
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limit: 2
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If you've created your own agents, you should provide the tag that you used
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when creating them in the ``queue`` entry -- this will instruct Buildkite to
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run that job only on agents that have that tag.
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We try to keep the pipeline definition file as simple as possible, and to
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keep any script used for CI inside ``libcxx/utils/ci``. This ensures that
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it's possible to reproduce CI issues locally with ease, understanding of
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course that some setups may require access to special hardware that is not
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available.
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Testing Your New Job
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====================
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Testing your new job is easy -- once your agent is set up (if any), just open
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a code review and the libc++ CI pipeline will run, including any changes you
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might have made to the pipeline definition itself.
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Service Level Agreement
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=======================
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To keep the libc++ CI useful for everyone, we aim for a quick turnaround time
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for all CI jobs. This allows the overall pipeline to finish in a reasonable
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amount of time, which is important because it directly affects our development
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velocity. We also try to make sure that jobs run on reliable infrastructure in
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order to avoid flaky failures, which reduce the value of CI for everyone.
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We may be reluctant to add and support CI jobs that take a long time to finish
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or that are too flaky.
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