Issue 3674 - Add a hg hook that references commits in issues

sitescripts/hg/bin/update_issues.py

Index: sitescripts/hg/bin/update_issues.py
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new file mode 100644
--- /dev/null
+++ b/sitescripts/hg/bin/update_issues.py
@@ -0,0 +1,75 @@
+#!/usr/bin/env python
+
+# This file is part of Adblock Plus <https://adblockplus.org/>,
+# Copyright (C) 2006-2016 Eyeo GmbH
+#
+# Adblock Plus is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 3 as
+# published by the Free Software Foundation.
+#
+# Adblock Plus is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+
+"""
+This module implements a changegroup (or pretxnchangegroup) hook that inspects
+all commit messages and checks if issues from the Adblock Plus issue tracker are
+being referenced. If there are, it updates them with the respective changeset
+URLs.
+"""
+
+import posixpath
+import re
+import xmlrpclib
+
+from sitescripts.utils import get_config, get_template
+
+def _generate_comments(repository_name, changes_by_issue):
+  comments = {}
+  template = get_template("hg/template/issue_commit_comment.tmpl")

[Wladimir Palant, 2016/02/23 10:41:31]

I think you need autoescape=False here.

[Felix Dahlke, 2016/02/23 16:22:59]

Done.

+  for issue_id, changes in changes_by_issue.iteritems():
+    comments[issue_id] = template.render({"repository_name": repository_name,
+                                          "changes": changes})
+  return comments
+
+def _post_comment(issue_id, comment):
+  issue_id = int(issue_id)
+  url = get_config().get("hg", "trac_xmlrpc_url")
+  server = xmlrpclib.ServerProxy(url)
+  attributes = server.ticket.get(issue_id)[3]
+  server.ticket.update(issue_id, comment,
+                       {"_ts": attributes["_ts"], "action": "leave"}, True)
+
+def hook(ui, repo, node, **kwargs):
+  first_change = repo[node]
+  issue_number_regex = re.compile(r"\bissue\s+(\d+)\b", re.I)
+  noissue_regex = re.compile(r"noissue\b", re.I)

[Wladimir Palant, 2016/02/23 10:41:31]

This should be \bnoissue\b (make sure that the word actually starts with
"noissue").

[Felix Dahlke, 2016/02/23 16:22:59]

I'm using match() so the message has to start with "noissue". We shouldn't match
"noissue" somewhere in the message here IMO.

[Wladimir Palant, 2016/02/23 21:33:23]

We agreed a while ago that we shouldn't be using match() to avoid exactly that
kind of non-obvious behavior. Please use search() and change the regular
expression into ^noissue\b.

[Felix Dahlke, 2016/02/23 21:40:58]

Fair enough. Tried to be smart, but this comment thread proves that it's a bad
idea. Done.

[Wladimir Palant, 2016/02/24 10:13:49]

Yes, particularly with the regexp and re.match() not in the same place this is
very confusing.

+  changes_by_issue = {}
+  for revision in xrange(first_change.rev(), len(repo)):
+    change = repo[revision]
+    description = change.description()
+    issue_ids = issue_number_regex.findall(description)
+    if issue_ids:
+      for issue_id in issue_ids:
+        changes_by_issue.setdefault(issue_id, []).append(change)
+    elif not noissue_regex.match(description):
+      # We should just reject all changes when one of them has an invalid
+      # commit message format, see: https://issues.adblockplus.org/ticket/3679

[Wladimir Palant, 2016/02/23 10:41:31]

Is that a TODO comment? Maybe it should actually say TODO then.

[Felix Dahlke, 2016/02/23 16:22:59]

Well it's referencing an issue, I normally do just that without writing "TODO".

+      ui.warn("warning: invalid commit message format in changeset %s\n" %
+              change)
+
+  repository_name = posixpath.split(repo.url())[1]
+  comments = _generate_comments(repository_name, changes_by_issue)
+
+  issue_url_template = get_config().get("hg", "issue_url_template")
+  for issue_id, comment in comments.iteritems():
+    try:
+      _post_comment(issue_id, comment)
+      ui.status("updating %s\n" % issue_url_template.format(id=issue_id))
+    except:
+      ui.warn("warning: failed to update %s\n" %
+              issue_url_template.format(id=issue_id))