job-flakes-config.yaml

metric: job-flakes
description: Computes flakiness for all jobs.
query: |
  select /* Calculate probability a job flaked this week */
    job,
    round(sum(if(flaked==1,passed,runs))/sum(runs),3) build_consistency,
    round(1-sum(flaked)/count(distinct commit),3) commit_consistency,
    sum(flaked) flakes,
    sum(runs) runs
  from ( /* Determine whether a (job, pr-num, commit) flaked */
    select
      job,
      stamp,
      num,
      commit,
      if(passed == runs or passed == 0, 0, 1) flaked,
      passed,
      integer(runs) runs
    from (
      select /* Count the runs and passes for each (job, pr-num, commit) */
        max(stamp) stamp,
        num,
        if(kind = "pull", if(commit is NULL, version, commit), version) commit,
        sum(if(result=='SUCCESS',1,0)) passed,
        count(result) runs
      from (
        SELECT /* all runs of any job for the past week, noting the commit and whether it passed */
          job,
          regexp_extract(path, r'pull/(\d+)') as num, /* pr number */
          if(left(job, 3) == "pr:", "pull", "ci") kind,
          version,
          regexp_extract(metadata.value, r'[^,]+,\d+:([a-f0-9]+)"') commit, /* extract the first commit id from the repo flag */
          date(started) stamp,
          date(date_add(date(started), -dayofweek(started), "day")) wk, /* TODO(fejta): remove or use */
          result
        FROM [k8s-gubernator:build.all]
        where
          started > date_add(current_timestamp(), -7, "DAY")
          and version != "unknown"
          and (metadata.key = 'repos' or left(job, 3) == "ci-")
      )
      group by job, num, commit
    )
  )
  group by job
  order by
    flakes desc,
    build_consistency,
    commit_consistency,
    job

jqfilter: |
  [(.[] | select(.job | contains("pr:")) | {(.job): {
      flakes: (.flakes//0|tonumber),
      runs: (.runs//0|tonumber),
      consistency: (.commit_consistency//0|tonumber)
  }})] | add