fune/taskcluster/taskgraph/parameters.py
Dustin J. Mitchell 0ee5e3c281 Bug 1383880: parse try config during the decision task; r=ahal
This sets the try_mode property, and parses the try message (if given), early
in the decision task and puts the results into the parameters.

The proximate need is to set optimze_target_tasks for some try modes and not
others. This also replaces the existing logic for parsing messages for certain
kinds, and makes the distinction between the different try modes a little
clearer.

MozReview-Commit-ID: AXJEGLh6pEV

--HG--
extra : rebase_source : 25e9966696d78d899783d9f38533d5ae66f9ccb9
extra : source : b53ff084c2d7968a1d9864d1343f2d9381fb652b
2017-08-21 23:14:14 +00:00

99 lines
2.8 KiB
Python

# -*- coding: utf-8 -*-
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
from __future__ import absolute_import, print_function, unicode_literals
import json
import yaml
from mozbuild.util import ReadOnlyDict
# Please keep this list sorted and in sync with taskcluster/docs/parameters.rst
PARAMETER_NAMES = set([
'base_repository',
'build_date',
'filters',
'head_ref',
'head_repository',
'head_rev',
'include_nightly',
'level',
'message',
'moz_build_date',
'optimize_target_tasks',
'owner',
'project',
'pushdate',
'pushlog_id',
'release_history',
'target_tasks_method',
'try_mode',
'try_options',
'try_task_config',
])
class Parameters(ReadOnlyDict):
"""An immutable dictionary with nicer KeyError messages on failure"""
def check(self):
names = set(self)
msg = []
missing = PARAMETER_NAMES - names
if missing:
msg.append("missing parameters: " + ", ".join(missing))
extra = names - PARAMETER_NAMES
if extra:
msg.append("extra parameters: " + ", ".join(extra))
if msg:
raise Exception("; ".join(msg))
def __getitem__(self, k):
if k not in PARAMETER_NAMES:
raise KeyError("no such parameter {!r}".format(k))
try:
return super(Parameters, self).__getitem__(k)
except KeyError:
raise KeyError("taskgraph parameter {!r} not found".format(k))
def load_parameters_file(filename):
"""
Load parameters from a path, url, decision task-id or project.
Examples:
task-id=fdtgsD5DQUmAQZEaGMvQ4Q
project=mozilla-central
"""
import urllib
from taskgraph.util.taskcluster import get_artifact_url, find_task_id
if not filename:
return Parameters()
try:
# reading parameters from a local parameters.yml file
f = open(filename)
except IOError:
# fetching parameters.yml using task task-id, project or supplied url
task_id = None
if filename.startswith("task-id="):
task_id = filename.split("=")[1]
elif filename.startswith("project="):
index = "gecko.v2.{}.latest.firefox.decision".format(filename.split("=")[1])
task_id = find_task_id(index)
if task_id:
filename = get_artifact_url(task_id, 'public/parameters.yml')
f = urllib.urlopen(filename)
if filename.endswith('.yml'):
return Parameters(**yaml.safe_load(f))
elif filename.endswith('.json'):
return Parameters(**json.load(f))
else:
raise TypeError("Parameters file `{}` is not JSON or YAML".format(filename))