Add Zuul ref replication
Zuul refs may now be pushed to an arbitrary number of git URLs. Change-Id: Icae2fc94eb73b63adbf6f6b799f2be166e951b55
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@ -160,6 +160,16 @@ smtp
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This can be overridden by individual pipelines.
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``default_to=you@example.com``
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replication
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"""""""""""
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Zuul can push the refs it creates to any number of servers. To do so,
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list the git push URLs in this section, one per line as follows::
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[replication]
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url1=ssh://user@host1.example.com:port/path/to/repo
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url2=ssh://user@host2.example.com:port/path/to/repo
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layout.yaml
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~~~~~~~~~~~
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@ -2920,6 +2920,39 @@ class TestScheduler(testtools.TestCase):
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self.assertEqual(B.data['status'], 'MERGED')
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self.assertEqual(B.reported, 2)
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def test_push_urls(self):
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"Test that Zuul can push refs to multiple URLs"
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upstream_path = os.path.join(self.upstream_root, 'org/project')
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replica1 = os.path.join(self.upstream_root, 'replica1')
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replica2 = os.path.join(self.upstream_root, 'replica2')
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self.config.add_section('replication')
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self.config.set('replication', 'url1', 'file://%s' % replica1)
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self.config.set('replication', 'url2', 'file://%s' % replica2)
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self.sched.reconfigure(self.config)
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r1 = git.Repo.clone_from(upstream_path, replica1 + '/org/project.git')
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r2 = git.Repo.clone_from(upstream_path, replica2 + '/org/project.git')
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A = self.fake_gerrit.addFakeChange('org/project', 'master', 'A')
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A.addApproval('CRVW', 2)
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self.fake_gerrit.addEvent(A.addApproval('APRV', 1))
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B = self.fake_gerrit.addFakeChange('org/project', 'mp', 'B')
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B.addApproval('CRVW', 2)
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self.fake_gerrit.addEvent(B.addApproval('APRV', 1))
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self.waitUntilSettled()
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count = 0
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for ref in r1.refs:
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if ref.path.startswith('refs/zuul'):
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count += 1
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self.assertEqual(count, 3)
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count = 0
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for ref in r2.refs:
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if ref.path.startswith('refs/zuul'):
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count += 1
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self.assertEqual(count, 3)
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def test_timer(self):
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"Test that a periodic job is triggered"
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self.worker.hold_jobs_in_build = True
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@ -16,6 +16,7 @@ import git
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import os
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import logging
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import model
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import threading
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class ZuulReference(git.Reference):
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@ -131,6 +132,11 @@ class Repo(object):
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self.remote_url))
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repo.remotes.origin.push('%s:%s' % (local, remote))
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def push_url(self, url, refspecs):
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repo = self.createRepoObject()
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self.log.debug("Pushing %s to %s" % (refspecs, url))
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repo.git.push([url] + refspecs)
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def update(self):
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repo = self.createRepoObject()
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self.log.debug("Updating repository %s" % self.local_path)
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@ -142,7 +148,7 @@ class Merger(object):
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log = logging.getLogger("zuul.Merger")
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def __init__(self, trigger, working_root, push_refs, sshkey, email,
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username):
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username, replicate_urls):
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self.trigger = trigger
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self.repos = {}
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self.working_root = working_root
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@ -153,6 +159,7 @@ class Merger(object):
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self._makeSSHWrapper(sshkey)
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self.email = email
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self.username = username
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self.replicate_urls = replicate_urls
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def _makeSSHWrapper(self, key):
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name = os.path.join(self.working_root, '.ssh_wrapper')
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@ -219,6 +226,25 @@ class Merger(object):
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return False
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return commit
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def replicateRefspecs(self, refspecs):
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threads = []
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for url in self.replicate_urls:
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t = threading.Thread(target=self._replicate,
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args=(url, refspecs))
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t.start()
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threads.append(t)
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for t in threads:
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t.join()
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def _replicate(self, url, project_refspecs):
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try:
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for project, refspecs in project_refspecs.items():
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repo = self.getRepo(project)
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repo.push_url(os.path.join(url, project.name + '.git'),
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refspecs)
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except Exception:
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self.log.exception("Exception pushing to %s" % url)
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def mergeChanges(self, items, target_ref=None):
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# Merge shortcuts:
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# if this is the only change just merge it against its branch.
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@ -257,6 +283,7 @@ class Merger(object):
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return commit
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project_branches = []
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replicate_refspecs = {}
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for i in reversed(items):
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# Here we create all of the necessary zuul refs and potentially
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# push them back to Gerrit.
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@ -276,10 +303,13 @@ class Merger(object):
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self.log.exception("Unable to set zuul ref %s for "
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"change %s" % (zuul_ref, i.change))
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return False
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ref = 'refs/zuul/' + i.change.branch + '/' + target_ref
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refspecs = replicate_refspecs.get(i.change.project, [])
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refspecs.append('%s:%s' % (ref, ref))
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replicate_refspecs[i.change.project] = refspecs
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if self.push_refs:
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# Push the results upstream to the zuul ref after
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# they are created.
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ref = 'refs/zuul/' + i.change.branch + '/' + target_ref
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try:
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repo.push(ref, ref)
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complete = self.trigger.waitForRefSha(i.change.project,
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@ -291,5 +321,5 @@ class Merger(object):
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self.log.error("Ref %s did not show up in repo" % ref)
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return False
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project_branches.append((i.change.project, i.change.branch))
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self.replicateRefspecs(replicate_refspecs)
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return commit
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@ -353,6 +353,11 @@ class Scheduler(threading.Thread):
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else:
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push_refs = False
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replicate_urls = []
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if self.config.has_section('replication'):
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for k, v in self.config.items('replication'):
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replicate_urls.append(v)
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if self.config.has_option('gerrit', 'sshkey'):
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sshkey = self.config.get('gerrit', 'sshkey')
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else:
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@ -363,7 +368,8 @@ class Scheduler(threading.Thread):
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# location.
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self.merger = merger.Merger(self.triggers['gerrit'],
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merge_root, push_refs,
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sshkey, merge_email, merge_name)
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sshkey, merge_email, merge_name,
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replicate_urls)
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for project in self.layout.projects.values():
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url = self.triggers['gerrit'].getGitUrl(project)
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self.merger.addProject(project, url)
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