Merge #15643: contrib: gh-merge: Include ACKs in merge commit

fa1c073154 contrib: gh-merge: Include review comments in merge commit (MarcoFalke)

Pull request description:

  This includes all up-to-date ACKs in the merge commit for reference

Tree-SHA512: 32c9352d884f9ecf94940f50f2921fc9fc026083c120f54d0651a41814872e852aee8d0c4ad5bcd03292329f05d76fcb7bac11741e1dd3bf417211a186005afb

contrib/devtools/github-merge.py

@@ -47,13 +47,12 @@ def git_config_get(option, default=None):
     except subprocess.CalledProcessError:
         return default
 
-def retrieve_pr_info(repo,pull,ghtoken):
+def retrieve_json(req, ghtoken):
     '''
-    Retrieve pull request information from github.
+    Retrieve json from github.
-    Return None if no title can be found, or an error happens.
+    Return None if an error happens.
     '''
     try:
-        req = Request("https://api.github.com/repos/"+repo+"/pulls/"+pull)
         if ghtoken is not None:
             req.add_header('Authorization', 'token ' + ghtoken)
         result = urlopen(req)
@@ -69,6 +68,18 @@ def retrieve_pr_info(repo,pull,ghtoken):
         print('Warning: unable to retrieve pull information from github: %s' % e)
         return None
 
+def retrieve_pr_info(repo,pull,ghtoken):
+    req = Request("https://api.github.com/repos/"+repo+"/pulls/"+pull)
+    return retrieve_json(req,ghtoken)
+
+def retrieve_pr_comments(repo,pull,ghtoken):
+    req = Request("https://api.github.com/repos/"+repo+"/issues/"+pull+"/comments")
+    return retrieve_json(req,ghtoken)
+
+def retrieve_pr_reviews(repo,pull,ghtoken):
+    req = Request("https://api.github.com/repos/"+repo+"/pulls/"+pull+"/reviews")
+    return retrieve_json(req,ghtoken)
+
 def ask_prompt(text):
     print(text,end=" ",file=stderr)
     stderr.flush()
@@ -133,6 +144,16 @@ def tree_sha512sum(commit='HEAD'):
         raise IOError('Non-zero return value executing git cat-file')
     return overall.hexdigest()
 
+def get_acks_from_comments(head_commit, comments):
+    assert len(head_commit) == 6
+    ack_str ='\n\nACKs for commit {}:\n'.format(head_commit)
+    for c in comments:
+        review = [l for l in c['body'].split('\r\n') if 'ACK' in l and head_commit in l]
+        if review:
+            ack_str += '  {}:\n'.format(c['user']['login'])
+            ack_str += '    {}\n'.format(review[0])
+    return ack_str
+
 def print_merge_details(pull, title, branch, base_branch, head_branch):
     print('%s#%s%s %s %sinto %s%s' % (ATTR_RESET+ATTR_PR,pull,ATTR_RESET,title,ATTR_RESET+ATTR_PR,branch,ATTR_RESET))
     subprocess.check_call([GIT,'log','--graph','--topo-order','--pretty=format:'+COMMIT_FORMAT,base_branch+'..'+head_branch])
@@ -185,6 +206,9 @@ def main():
     info = retrieve_pr_info(repo,pull,ghtoken)
     if info is None:
         sys.exit(1)
+    comments = retrieve_pr_comments(repo,pull,ghtoken) + retrieve_pr_reviews(repo,pull,ghtoken)
+    if comments is None:
+        sys.exit(1)
     title = info['title'].strip()
     body = info['body'].strip()
     # precedence order for destination branch argument:
@@ -238,6 +262,7 @@ def main():
         message = firstline + '\n\n'
         message += subprocess.check_output([GIT,'log','--no-merges','--topo-order','--pretty=format:%h %s (%an)',base_branch+'..'+head_branch]).decode('utf-8')
         message += '\n\nPull request description:\n\n  ' + body.replace('\n', '\n  ') + '\n'
+        message += get_acks_from_comments(head_commit=subprocess.check_output([GIT,'log','-1','--pretty=format:%H',head_branch]).decode('utf-8')[:6], comments=comments)
         try:
             subprocess.check_call([GIT,'merge','-q','--commit','--no-edit','--no-ff','-m',message.encode('utf-8'),head_branch])
         except subprocess.CalledProcessError: