commit e24fa8b0a8bbd5c4a2332f4f2cefdb3263dffe44
author Anthony Fandrianto <atyfto@google.com> Wed Jan 13 06:23:58 2021 +0000
committer CQ Bot <commit-bot@chromium.org> Wed Jan 13 06:23:58 2021 +0000
tree 9cb5de26da944f1258311f7bd545e5acbb15f110
parent 8e034134591263b070e92593035f234088f4373c

[autocorrelator] Implement CI/CQ summary markdown correlator

This change implements the skeleton for the autocorrelator tool as
sketched out in go/ci-cq-auto-correlator.

This tool has two subcommands:

check-ci: This subcommand takes an input summary markdown and compares
it to recent CI builds' summary markdowns. If a correlated failure is
detected, emit a finding as JSON output e.g.

{
    score: 0.95,
    build_id: "887939301011",
    commit_dist: 4,
    is_green: false
}

If CI looks green, emit a finding as a JSON output e.g.

{
    score: 0.0,
    build_id: "887939301011",
    commit_dist: 2,
    is_green: true
}

Simply speaking, this can be used to help answer questions like: "is the
failure I'm seeing in CQ also present in CI?"

Usage: autocorrelator check-ci -base-commit abc -builder foo/bar/baz \
           -search-range 20 -summary-markdown-path path/to/summary.md
	   -json-output out.json

check-try: Take an input summary markdown and compare it to recent try
builds' summary markdowns. Return a list of findings as JSON, which is
the result of running the edit distance algo on every summary markdown,
e.g.

[
    {
        score: 0.88,
        build_id: "881101039773",
	is_green: false
    },
    {
        score: 0.0,
	build_id "8811010397766",
	is_green: true
    },
    {
        score: 0.84,
        build_id: "881101039761",
	is_green: false
    }
]

This can be used to help answer questions like: "is the failure I'm
seeing in CQ also happening on other tryjobs?"

Usage: autocorrelator check-try -builder foo/bar/baz -search-range 20 \
           -summary-markdown-path path/to/summary.md
	   -json-output out.json

Bug: 65374
Change-Id: I186e46d9d0a4b0035f96f4fd65d04ec209a35c3a
Reviewed-on: https://fuchsia-review.googlesource.com/c/infra/infra/+/458614
Reviewed-by: Anirudh Mathukumilli <rudymathu@google.com>
Commit-Queue: Anthony Fandrianto <atyfto@google.com>