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Index taskcluster tasks by merge parents if available.

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This commit is contained in:
Josh Matthews 2019-05-13 17:50:10 -04:00 • committed by Simon Sapin
parent e0c95ed855
commit 0edf865deb
3 changed files with 36 additions and 20 deletions
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12
etc/taskcluster/decisionlib.py
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@ -57,9 +57,21 @@ class Config:
self.git_ref = os.environ.get("GIT_REF")
self.git_sha = os.environ.get("GIT_SHA")
def init_task_id(self):
# If the head commit is a merge, we want to generate a unique task id which incorporates
# the merge parents rather that the actual sha of the merge commit. This ensures that tasks
# can be reused if the tree is in an identical state. Otherwise, if the head commit is
# not a merge, we can rely on the head commit sha for that purpose.
merge_parents_output = subprocess.check_output(["git", "show", "--format=%P", "HEAD"])
merge_parents = merge_parents_output.decode("utf8").strip().split(' ')
self.task_id = self.git_sha
if len(merge_parents) > 1:
self.task_id = '-'.join(merge_parents)
def git_sha_is_current_head(self):
output = subprocess.check_output(["git", "rev-parse", "HEAD"])
self.git_sha = output.decode("utf8").strip()
self.init_task_id()
class Shared: