class TestExporter(object):
def __init__(self,
host,
gh_user,
gh_token,
gerrit_user,
gerrit_token,
dry_run=False):
self.host = host
self.wpt_github = WPTGitHub(host, gh_user, gh_token)
self.gerrit = GerritAPI(self.host, gerrit_user, gerrit_token)
self.dry_run = dry_run
self.local_wpt = LocalWPT(self.host, gh_token)
self.local_wpt.fetch()
def run(self):
"""For last n commits on Chromium master, create or try to merge a PR.
The exporter will look in chronological order at every commit in Chromium.
"""
open_gerrit_cls = self.gerrit.query_exportable_open_cls()
self.process_gerrit_cls(open_gerrit_cls)
exportable_commits = self.get_exportable_commits()
for exportable_commit in exportable_commits:
pull_request = self.wpt_github.pr_for_chromium_commit(
exportable_commit)
if pull_request:
if pull_request.state == 'open':
self.merge_pull_request(pull_request)
else:
_log.info('Pull request is not open: #%d %s',
pull_request.number, pull_request.title)
else:
self.create_pull_request(exportable_commit)
def process_gerrit_cls(self, gerrit_cls):
"""Creates or updates PRs for Gerrit CLs."""
for cl in gerrit_cls:
_log.info('Found Gerrit in-flight CL: "%s" %s', cl.subject, cl.url)
if not cl.has_review_started:
_log.info('CL review has not started, skipping.')
continue
# Check if CL already has a corresponding PR
pull_request = self.wpt_github.pr_with_change_id(cl.change_id)
if pull_request:
pr_url = '{}pull/{}'.format(WPT_GH_URL, pull_request.number)
_log.info('In-flight PR found: %s', pr_url)
pr_cl_revision = self.wpt_github.extract_metadata(
WPT_REVISION_FOOTER + ' ', pull_request.body)
if cl.current_revision_sha == pr_cl_revision:
_log.info(
'PR revision matches CL revision. Nothing to do here.')
continue
_log.info('New revision found, updating PR...')
self.create_or_update_pull_request_from_cl(cl, pull_request)
else:
_log.info('No in-flight PR found for CL. Creating...')
self.create_or_update_pull_request_from_cl(cl)
def get_exportable_commits(self):
return exportable_commits_over_last_n_commits(self.host,
self.local_wpt,
self.wpt_github)
def merge_pull_request(self, pull_request):
_log.info('In-flight PR found: %s', pull_request.title)
_log.info('%spull/%d', WPT_GH_URL, pull_request.number)
if self.dry_run:
_log.info('[dry_run] Would have attempted to merge PR')
return
if PROVISIONAL_PR_LABEL in pull_request.labels:
_log.info('Removing provisional label "%s"...',
PROVISIONAL_PR_LABEL)
self.wpt_github.remove_label(pull_request.number,
PROVISIONAL_PR_LABEL)
_log.info('Attempting to merge...')
# This is outside of the try block because if there's a problem communicating
# with the GitHub API, we should hard fail.
branch = self.wpt_github.get_pr_branch(pull_request.number)
try:
self.wpt_github.merge_pull_request(pull_request.number)
# This is in the try block because if a PR can't be merged, we shouldn't
# delete its branch.
self.wpt_github.delete_remote_branch(branch)
change_id = self.wpt_github.extract_metadata(
'Change-Id: ', pull_request.body)
if change_id:
cl = GerritCL(data={'change_id': change_id}, api=self.gerrit)
pr_url = '{}pull/{}'.format(WPT_GH_URL, pull_request.number)
cl.post_comment((
'The WPT PR for this CL has been merged upstream! {pr_url}'
).format(pr_url=pr_url))
except MergeError:
_log.info('Could not merge PR.')
def export_first_exportable_commit(self):
"""Looks for exportable commits in Chromium, creates PR if found."""
wpt_commit, chromium_commit = self.local_wpt.most_recent_chromium_commit(
)
assert chromium_commit, 'No Chromium commit found, this is impossible'
wpt_behind_master = self.local_wpt.commits_behind_master(wpt_commit)
_log.info('\nLast Chromium export commit in web-platform-tests:')
_log.info('web-platform-tests@%s', wpt_commit)
_log.info('(%d behind web-platform-tests@origin/master)',
wpt_behind_master)
_log.info(
'\nThe above WPT commit points to the following Chromium commit:')
_log.info('chromium@%s', chromium_commit.sha)
_log.info('(%d behind chromium@origin/master)',
chromium_commit.num_behind_master())
exportable_commits = exportable_commits_over_last_n_commits(
chromium_commit.sha, self.host, self.local_wpt, self.wpt_github)
if not exportable_commits:
_log.info('No exportable commits found in Chromium, stopping.')
return
_log.info('Found %d exportable commits in Chromium:',
len(exportable_commits))
for commit in exportable_commits:
_log.info('- %s %s', commit, commit.subject())
outbound_commit = exportable_commits[0]
_log.info('Picking the earliest commit and creating a PR')
_log.info('- %s %s', outbound_commit.sha, outbound_commit.subject())
self.create_pull_request(outbound_commit)
def create_pull_request(self, outbound_commit):
patch = outbound_commit.format_patch()
message = outbound_commit.message()
author = outbound_commit.author()
if self.dry_run:
_log.info('[dry_run] Stopping before creating PR')
_log.info('\n\n[dry_run] message:')
_log.info(message)
_log.info('\n\n[dry_run] patch:')
_log.info(patch)
return
branch_name = 'chromium-export-{sha}'.format(
sha=outbound_commit.short_sha)
self.local_wpt.create_branch_with_patch(branch_name, message, patch,
author)
response_data = self.wpt_github.create_pr(
remote_branch_name=branch_name,
desc_title=outbound_commit.subject(),
body=outbound_commit.body())
_log.info('Create PR response: %s', response_data)
if response_data:
data, status_code = self.wpt_github.add_label(
response_data['number'], EXPORT_PR_LABEL)
_log.info('Add label response (status %s): %s', status_code, data)
return response_data
def create_or_update_pull_request_from_cl(self, cl, pull_request=None):
patch = cl.get_patch()
updating = bool(pull_request)
action_str = 'updating' if updating else 'creating'
if self.local_wpt.test_patch(patch) == '':
_log.error('Gerrit CL patch did not apply cleanly.')
_log.error('First 500 characters of patch: %s', patch[0:500])
return
if self.dry_run:
_log.info('[dry_run] Stopping before %s PR from CL', action_str)
_log.info('\n\n[dry_run] subject:')
_log.info(cl.subject)
_log.debug('\n\n[dry_run] patch[0:500]:')
_log.debug(patch[0:500])
return
message = cl.latest_commit_message_with_footers()
# Annotate revision footer for Exporter's later use.
message = '\n'.join([
line for line in message.split('\n')
if WPT_REVISION_FOOTER not in line
])
message += '\n{} {}'.format(WPT_REVISION_FOOTER,
cl.current_revision_sha)
branch_name = 'chromium-export-cl-{id}'.format(id=cl.change_id)
self.local_wpt.create_branch_with_patch(branch_name,
message,
patch,
cl.owner_email,
force_push=True)
if updating:
response_data = self.wpt_github.update_pr(pull_request.number,
cl.subject, message)
_log.debug('Update PR response: %s', response_data)
# TODO(jeffcarp): Turn PullRequest into a class with a .url method
cl.post_comment(
('Successfully updated WPT GitHub pull request with '
'new revision "{subject}": {pr_url}').format(
subject=cl.current_revision_description,
pr_url='%spull/%d' % (WPT_GH_URL, pull_request.number),
))
else:
response_data = self.wpt_github.create_pr(branch_name, cl.subject,
message)
_log.debug('Create PR response: %s', response_data)
self.wpt_github.add_label(response_data['number'], EXPORT_PR_LABEL)
self.wpt_github.add_label(response_data['number'],
PROVISIONAL_PR_LABEL)
cl.post_comment((
'Exportable changes to web-platform-tests were detected in this CL '
'and a pull request in the upstream repo has been made: {pr_url}.\n\n'
'If this CL lands and Travis CI upstream is green, we will auto-merge the PR.\n\n'
'Note: Please check the Travis CI status (at the bottom of the PR) '
'before landing this CL and only land this CL if the status is green. '
'Otherwise a human needs to step in and resolve it manually, during which time '
'the WPT Importer is blocked from operating.\n\n'
'(There is ongoing work to 1. prevent CLs with red upstream PRs from landing '
'(https://crbug.com/711447) and 2. prevent the importer from being blocked on '
'stuck exportable changes (https://crbug.com/734121))\n\n'
'WPT Export docs:\n'
'https://chromium.googlesource.com/chromium/src/+/master'
'/docs/testing/web_platform_tests.md#Automatic-export-process'
).format(pr_url='%spull/%d' %
(WPT_GH_URL, response_data['number'])))
return response_data
class TestExporter(object):
def __init__(self, host, gh_user, gh_token, gerrit_user, gerrit_token, dry_run=False):
self.host = host
self.wpt_github = WPTGitHub(host, gh_user, gh_token, pr_history_window=PR_HISTORY_WINDOW)
self.gerrit = GerritAPI(self.host, gerrit_user, gerrit_token)
self.dry_run = dry_run
self.local_wpt = LocalWPT(self.host, gh_token)
self.local_wpt.fetch()
def run(self):
"""For last n commits on Chromium master, create or try to merge a PR.
The exporter will look in chronological order at every commit in Chromium.
"""
open_gerrit_cls = self.gerrit.query_exportable_open_cls()
self.process_gerrit_cls(open_gerrit_cls)
exportable_commits = self.get_exportable_commits(limit=COMMIT_HISTORY_WINDOW)
for exportable_commit in exportable_commits:
pull_request = self.corresponding_pull_request_for_commit(exportable_commit)
if pull_request:
if pull_request.state == 'open':
self.merge_pull_request(pull_request)
else:
_log.info('Pull request is not open: #%d %s', pull_request.number, pull_request.title)
else:
self.create_pull_request(exportable_commit)
def process_gerrit_cls(self, gerrit_cls):
"""Creates or updates PRs for Gerrit CLs."""
for cl in gerrit_cls:
_log.info('Found Gerrit in-flight CL: "%s" %s', cl.subject, cl.url)
# Check if CL already has a corresponding PR
pull_request = self.wpt_github.pr_with_change_id(cl.change_id)
if pull_request:
pr_url = '{}pull/{}'.format(WPT_GH_URL, pull_request.number)
_log.info('In-flight PR found: %s', pr_url)
pr_cl_revision = self.wpt_github.extract_metadata(WPT_REVISION_FOOTER + ' ', pull_request.body)
if cl.current_revision_sha == pr_cl_revision:
_log.info('PR revision matches CL revision. Nothing to do here.')
continue
_log.info('New revision found, updating PR...')
self.create_or_update_pull_request_from_cl(cl, pull_request)
else:
_log.info('No in-flight PR found for CL. Creating...')
self.create_or_update_pull_request_from_cl(cl)
def get_exportable_commits(self, limit):
return exportable_commits_over_last_n_commits(limit, self.host, self.local_wpt)
def merge_pull_request(self, pull_request):
_log.info('In-flight PR found: %s', pull_request.title)
_log.info('%spull/%d', WPT_GH_URL, pull_request.number)
if self.dry_run:
_log.info('[dry_run] Would have attempted to merge PR')
return
_log.info('Attempting to merge...')
# This is outside of the try block because if there's a problem communicating
# with the GitHub API, we should hard fail.
branch = self.wpt_github.get_pr_branch(pull_request.number)
try:
self.wpt_github.merge_pull_request(pull_request.number)
# This is in the try block because if a PR can't be merged, we shouldn't
# delete its branch.
self.wpt_github.delete_remote_branch(branch)
change_id = self.wpt_github.extract_metadata('Change-Id: ', pull_request.body)
if change_id:
cl = GerritCL(data={'change_id': change_id}, api=self.gerrit)
pr_url = '{}pull/{}'.format(WPT_GH_URL, pull_request.number)
cl.post_comment((
'The WPT PR for this CL has been merged upstream! {pr_url}'
).format(
pr_url=pr_url
))
except MergeError:
_log.info('Could not merge PR.')
def export_first_exportable_commit(self):
"""Looks for exportable commits in Chromium, creates PR if found."""
wpt_commit, chromium_commit = self.local_wpt.most_recent_chromium_commit()
assert chromium_commit, 'No Chromium commit found, this is impossible'
wpt_behind_master = self.local_wpt.commits_behind_master(wpt_commit)
_log.info('\nLast Chromium export commit in web-platform-tests:')
_log.info('web-platform-tests@%s', wpt_commit)
_log.info('(%d behind web-platform-tests@origin/master)', wpt_behind_master)
_log.info('\nThe above WPT commit points to the following Chromium commit:')
_log.info('chromium@%s', chromium_commit.sha)
_log.info('(%d behind chromium@origin/master)', chromium_commit.num_behind_master())
exportable_commits = exportable_commits_since(chromium_commit.sha, self.host, self.local_wpt)
if not exportable_commits:
_log.info('No exportable commits found in Chromium, stopping.')
return
_log.info('Found %d exportable commits in Chromium:', len(exportable_commits))
for commit in exportable_commits:
_log.info('- %s %s', commit, commit.subject())
outbound_commit = exportable_commits[0]
_log.info('Picking the earliest commit and creating a PR')
_log.info('- %s %s', outbound_commit.sha, outbound_commit.subject())
self.create_pull_request(outbound_commit)
def create_pull_request(self, outbound_commit):
patch = outbound_commit.format_patch()
message = outbound_commit.message()
author = outbound_commit.author()
if self.dry_run:
_log.info('[dry_run] Stopping before creating PR')
_log.info('\n\n[dry_run] message:')
_log.info(message)
_log.info('\n\n[dry_run] patch:')
_log.info(patch)
return
branch_name = 'chromium-export-{sha}'.format(sha=outbound_commit.short_sha)
self.local_wpt.create_branch_with_patch(branch_name, message, patch, author)
response_data = self.wpt_github.create_pr(
remote_branch_name=branch_name,
desc_title=outbound_commit.subject(),
body=outbound_commit.body())
_log.info('Create PR response: %s', response_data)
if response_data:
data, status_code = self.wpt_github.add_label(response_data['number'])
_log.info('Add label response (status %s): %s', status_code, data)
return response_data
def create_or_update_pull_request_from_cl(self, cl, pull_request=None):
patch = cl.get_patch()
updating = bool(pull_request)
action_str = 'updating' if updating else 'creating'
if self.local_wpt.test_patch(patch) == '':
_log.error('Gerrit CL patch did not apply cleanly.')
_log.error('First 500 characters of patch: %s', patch[0:500])
return
if self.dry_run:
_log.info('[dry_run] Stopping before %s PR from CL', action_str)
_log.info('\n\n[dry_run] subject:')
_log.info(cl.subject)
_log.debug('\n\n[dry_run] patch[0:500]:')
_log.debug(patch[0:500])
return
message = cl.latest_commit_message_with_footers()
# Annotate revision footer for Exporter's later use.
message = '\n'.join([line for line in message.split('\n') if WPT_REVISION_FOOTER not in line])
message += '\n{} {}'.format(WPT_REVISION_FOOTER, cl.current_revision_sha)
branch_name = 'chromium-export-cl-{id}'.format(id=cl.change_id)
self.local_wpt.create_branch_with_patch(branch_name, message, patch, cl.owner_email, force_push=True)
if updating:
response_data = self.wpt_github.update_pr(pull_request.number, cl.subject, message)
_log.debug('Update PR response: %s', response_data)
# TODO(jeffcarp): Turn PullRequest into a class with a .url method
cl.post_comment((
'Successfully updated WPT GitHub pull request with '
'new revision "{subject}": {pr_url}'
).format(
subject=cl.current_revision_description,
pr_url='%spull/%d' % (WPT_GH_URL, pull_request.number),
))
else:
response_data = self.wpt_github.create_pr(branch_name, cl.subject, message)
_log.debug('Create PR response: %s', response_data)
data, status_code = self.wpt_github.add_label(response_data['number'])
_log.info('Add label response (status %s): %s', status_code, data)
cl.post_comment((
'Exportable changes to web-platform-tests were detected in this CL '
'and a pull request in the upstream repo has been made: {pr_url}.\n\n'
'Travis CI has been kicked off and if it fails, we will let you know here. '
'If this CL lands and Travis CI is green, we will auto-merge the PR.'
).format(
pr_url='%spull/%d' % (WPT_GH_URL, response_data['number'])
))
return response_data
def corresponding_pull_request_for_commit(self, exportable_commit):
"""Search pull requests for one that corresponds to exportable_commit.
Returns the pull_request if found, else returns None.
"""
# Check for PRs created by commits on master.
pull_request = self.wpt_github.pr_with_position(exportable_commit.position)
if pull_request:
return pull_request
# Check for PRs created by open Gerrit CLs.
change_id = exportable_commit.change_id()
if change_id:
return self.wpt_github.pr_with_change_id(change_id)
return None