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devtools: Auto-set branch to merge to in github-merge

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As we are already using the API to retrieve the pull request
title, also retrieve the base branch.

This makes sure that pull requests for 0.12 automatically end up in
0.12, and pull requests for master automatically end up in master,
and so on.

It is still possible to override the branch from the command line
or using the `githubmerge.branch` git option.
This commit is contained in:
Wladimir J. van der Laan 2016-04-01 14:35:57 +02:00
parent 28ad4d9fc2
commit 10d3ae102a
1 changed files with 22 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
contrib/devtools/github-merge.py
View File

@ -47,9 +47,9 @@ def git_config_get(option, default=None):
except subprocess.CalledProcessError as e:
return default
def retrieve_pr_title(repo,pull):
def retrieve_pr_info(repo,pull):
'''
Retrieve pull request title from github.
Retrieve pull request information from github.
Return None if no title can be found, or an error happens.
'''
try:
@ -57,9 +57,9 @@ def retrieve_pr_title(repo,pull):
result = urlopen(req)
reader = codecs.getreader('utf-8')
obj = json.load(reader(result))
return obj['title']
return obj
except Exception as e:
print('Warning: unable to retrieve pull title from github: %s' % e)
print('Warning: unable to retrieve pull information from github: %s' % e)
return None
def ask_prompt(text):
@ -69,13 +69,13 @@ def ask_prompt(text):
print("",file=stderr)
return reply
def parse_arguments(branch):
def parse_arguments():
epilog = '''
In addition, you can set the following git configuration variables:
githubmerge.repository (mandatory),
user.signingkey (mandatory),
githubmerge.host (default: git@github.com),
githubmerge.branch (default: master),
githubmerge.branch (no default),
githubmerge.testcmd (default: none).
'''
parser = argparse.ArgumentParser(description='Utility to merge, sign and push github pull requests',
@ -83,14 +83,14 @@ def parse_arguments(branch):
parser.add_argument('pull', metavar='PULL', type=int, nargs=1,
help='Pull request ID to merge')
parser.add_argument('branch', metavar='BRANCH', type=str, nargs='?',
default=branch, help='Branch to merge against (default: '+branch+')')
default=None, help='Branch to merge against (default: githubmerge.branch setting, or base branch for pull, or \'master\')')
return parser.parse_args()
def main():
# Extract settings from git repo
repo = git_config_get('githubmerge.repository')
host = git_config_get('githubmerge.host','git@github.com')
branch = git_config_get('githubmerge.branch','master')
opt_branch = git_config_get('githubmerge.branch',None)
testcmd = git_config_get('githubmerge.testcmd')
signingkey = git_config_get('user.signingkey')
if repo is None:
@ -105,9 +105,20 @@ def main():
host_repo = host+":"+repo # shortcut for push/pull target
# Extract settings from command line
args = parse_arguments(branch)
args = parse_arguments()
pull = str(args.pull[0])
branch = args.branch
# Receive pull information from github
info = retrieve_pr_info(repo,pull)
if info is None:
exit(1)
title = info['title']
# precedence order for destination branch argument:
# - command line argument
# - githubmerge.branch setting
# - base branch for pull (as retrieved from github)
# - 'master'
branch = args.branch or opt_branch or info['base']['ref'] or 'master'
# Initialize source branches
head_branch = 'pull/'+pull+'/head'
@ -147,7 +158,6 @@ def main():
try:
# Create unsigned merge commit.
title = retrieve_pr_title(repo,pull)
if title:
firstline = 'Merge #%s: %s' % (pull,title)
else:
@ -165,7 +175,7 @@ def main():
print("ERROR: Creating merge failed (already merged?).",file=stderr)
exit(4)
print('%s#%s%s %s' % (ATTR_RESET+ATTR_PR,pull,ATTR_RESET,title))
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])
print()
# Run test command if configured.