forked from mirrors/gecko-dev
84 lines
2.8 KiB
Python
84 lines
2.8 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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from requests import HTTPError
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from taskgraph.util.taskcluster import find_task_id, get_artifact
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from gecko_taskgraph.util.attributes import INTEGRATION_PROJECTS, TRY_PROJECTS
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from gecko_taskgraph.util.taskcluster import state_task
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BACKSTOP_PUSH_INTERVAL = 20
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BACKSTOP_TIME_INTERVAL = 60 * 4 # minutes
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BACKSTOP_INDEX = "{trust-domain}.v2.{project}.latest.taskgraph.backstop"
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def is_backstop(
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params,
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push_interval=BACKSTOP_PUSH_INTERVAL,
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time_interval=BACKSTOP_TIME_INTERVAL,
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trust_domain="gecko",
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integration_projects=INTEGRATION_PROJECTS,
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):
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"""Determines whether the given parameters represent a backstop push.
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Args:
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push_interval (int): Number of pushes
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time_interval (int): Minutes between forced schedules.
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Use 0 to disable.
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trust_domain (str): "gecko" for Firefox, "comm" for Thunderbird
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integration_projects (set): project that uses backstop optimization
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Returns:
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bool: True if this is a backstop, otherwise False.
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"""
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# In case this is being faked on try.
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if params.get("backstop", False):
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return True
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project = params["project"]
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pushid = int(params["pushlog_id"])
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pushdate = int(params["pushdate"])
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if project in TRY_PROJECTS:
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return False
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if project not in integration_projects:
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return True
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# On every Nth push, want to run all tasks.
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if pushid % push_interval == 0:
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return True
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if time_interval <= 0:
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return False
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# We also want to ensure we run all tasks at least once per N minutes.
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subs = {"trust-domain": trust_domain, "project": project}
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index = BACKSTOP_INDEX.format(**subs)
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try:
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last_backstop_id = find_task_id(index)
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except KeyError:
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# Index wasn't found, implying there hasn't been a backstop push yet.
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return True
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if state_task(last_backstop_id) in ("failed", "exception"):
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# If the last backstop failed its decision task, make this a backstop.
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return True
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try:
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last_pushdate = get_artifact(last_backstop_id, "public/parameters.yml")[
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"pushdate"
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]
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except HTTPError as e:
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# If the last backstop decision task exists in the index, but
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# parameters.yml isn't available yet, it means the decision task is
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# still running. If that's the case, we can be pretty sure the time
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# component will not cause a backstop, so just return False.
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if e.response.status_code == 404:
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return False
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raise
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if (pushdate - last_pushdate) / 60 >= time_interval:
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return True
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return False
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