ci: cut Actions spend across PR/push triggers #12955
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,167 @@ | ||
| """Wait for upstream workflow runs (by display name) on the given head SHA. | ||
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| Used by platform-fullstack-ci's preflight job to gate the expensive | ||
| big-boi E2E job: only run E2E if every listed upstream workflow has | ||
| completed successfully on the same SHA. Outputs ``proceed=true|false`` | ||
| to ``$GITHUB_OUTPUT`` for downstream ``if:`` conditions. | ||
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| A workflow that did not trigger for this SHA at all (e.g. excluded by a | ||
| ``paths`` filter) is treated as a non-blocker — we only block when an | ||
| upstream workflow ran and failed. | ||
| """ | ||
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| import os | ||
| import sys | ||
| import time | ||
| from typing import Dict, List, Optional | ||
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| import requests | ||
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| REQUEST_TIMEOUT = 15 | ||
| # Wait this long before we even start polling — gives webhooks + | ||
| # workflow registration time on busy queues. | ||
| INITIAL_DELAY = 60 | ||
| POLL_INTERVAL = 30 | ||
| MAX_WAIT_SECONDS = 90 * 60 | ||
| # Grace period (measured from preflight start) during which a missing | ||
| # upstream workflow is treated as "still pending registration" rather | ||
| # than "path-filtered out / never going to run". Without this, a slow | ||
| # webhook delivery could let us emit proceed=true before backend/frontend | ||
| # CI have even appeared on the SHA — defeating the cost guard. | ||
| MISSING_GRACE_SECONDS = 10 * 60 | ||
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| def get_env() -> Optional[Dict[str, object]]: | ||
| raw = os.environ.get("UPSTREAM_WORKFLOWS", "") | ||
| workflows = [w.strip() for w in raw.splitlines() if w.strip()] | ||
| if not workflows: | ||
| return None | ||
| return { | ||
| "api": os.environ["GITHUB_API_URL"], | ||
| "repo": os.environ["GITHUB_REPOSITORY"], | ||
| "sha": os.environ["HEAD_SHA"], | ||
| "token": os.environ["GITHUB_TOKEN"], | ||
| "workflows": workflows, | ||
| } | ||
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| def fetch_runs(env: Dict[str, object], headers: Dict[str, str]) -> List[Dict]: | ||
| runs: List[Dict] = [] | ||
| url = ( | ||
| f"{env['api']}/repos/{env['repo']}/actions/runs" | ||
| f"?head_sha={env['sha']}&per_page=100" | ||
| ) | ||
| while url: | ||
| response = requests.get(url, headers=headers, timeout=REQUEST_TIMEOUT) | ||
| response.raise_for_status() | ||
| runs.extend(response.json().get("workflow_runs", [])) | ||
| next_url = None | ||
| for part in response.headers.get("Link", "").split(","): | ||
| if 'rel="next"' in part: | ||
| next_url = part.split(";")[0].strip().strip("<>") | ||
| break | ||
| url = next_url | ||
| return runs | ||
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| def latest_per_workflow(runs: List[Dict], names: List[str]) -> Dict[str, Dict]: | ||
| by_name: Dict[str, Dict] = {} | ||
| name_set = set(names) | ||
| for run in runs: | ||
| name = run.get("name") | ||
| if name not in name_set: | ||
| continue | ||
| prev = by_name.get(name) | ||
| if prev is None or run["run_number"] > prev["run_number"]: | ||
| by_name[name] = run | ||
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coderabbitai[bot] marked this conversation as resolved.
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| return by_name | ||
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| def write_output(key: str, value: str) -> None: | ||
| out = os.environ.get("GITHUB_OUTPUT") | ||
| if out: | ||
| with open(out, "a") as f: | ||
| f.write(f"{key}={value}\n") | ||
| print(f"output: {key}={value}") | ||
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| def main() -> None: | ||
| env = get_env() | ||
| if env is None: | ||
| print("No UPSTREAM_WORKFLOWS configured; proceeding.") | ||
| write_output("proceed", "true") | ||
| return | ||
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| headers = { | ||
| "Accept": "application/vnd.github+json", | ||
| "Authorization": f"Bearer {env['token']}", | ||
| "X-GitHub-Api-Version": "2022-11-28", | ||
| } | ||
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| print(f"Gating on upstream workflows for SHA {env['sha']}:") | ||
| for w in env["workflows"]: | ||
| print(f" - {w}") | ||
| start = time.monotonic() | ||
| print(f"Initial delay {INITIAL_DELAY}s to let upstream runs register...") | ||
| time.sleep(INITIAL_DELAY) | ||
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| deadline = start + MAX_WAIT_SECONDS | ||
| grace_deadline = start + MISSING_GRACE_SECONDS | ||
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| while True: | ||
| runs = fetch_runs(env, headers) | ||
| by_name = latest_per_workflow(runs, env["workflows"]) | ||
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coderabbitai[bot] marked this conversation as resolved.
Outdated
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| missing = [w for w in env["workflows"] if w not in by_name] | ||
| in_progress = [ | ||
| w for w, r in by_name.items() if r["status"] != "completed" | ||
| ] | ||
| failed = [ | ||
| f"{w}={by_name[w]['conclusion']}" | ||
| for w in by_name | ||
| if by_name[w]["status"] == "completed" | ||
| and by_name[w]["conclusion"] not in ("success", "skipped", "neutral") | ||
| ] | ||
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| if failed: | ||
| print(f"Upstream failed: {failed}") | ||
| write_output("proceed", "false") | ||
| return | ||
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| # Don't treat "missing" as "skipped" until the grace period | ||
| # has fully elapsed — otherwise a slow webhook / queue could | ||
| # let us pass the gate before backend/frontend CI even appears. | ||
| if missing and time.monotonic() < grace_deadline: | ||
| remaining = int(grace_deadline - time.monotonic()) | ||
| print( | ||
| f"Waiting (within {MISSING_GRACE_SECONDS}s grace, " | ||
| f"{remaining}s left): missing={missing}, " | ||
| f"in_progress={in_progress}" | ||
| ) | ||
| time.sleep(POLL_INTERVAL) | ||
| continue | ||
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| if not in_progress: | ||
| if missing: | ||
| print( | ||
| "Workflow(s) did not trigger after grace period " | ||
| f"(treating as skipped): {missing}" | ||
| ) | ||
| print(f"Upstream passed: {list(by_name.keys())}") | ||
| write_output("proceed", "true") | ||
| return | ||
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coderabbitai[bot] marked this conversation as resolved.
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| if time.monotonic() > deadline: | ||
| print( | ||
| f"Timeout after {MAX_WAIT_SECONDS}s; still in_progress=" | ||
| f"{in_progress}, missing={missing}" | ||
| ) | ||
| write_output("proceed", "false") | ||
| sys.exit(1) | ||
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| print(f"Waiting: in_progress={in_progress}, missing={missing}") | ||
| time.sleep(POLL_INTERVAL) | ||
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| if __name__ == "__main__": | ||
| main() | ||
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let's keep these rather than
classic/**.py;