diff options
Diffstat (limited to 'contrib/devtools')
| -rw-r--r-- | contrib/devtools/README.md | 4 | ||||
| -rwxr-xr-x | contrib/devtools/github-merge.py | 223 | ||||
| -rwxr-xr-x | contrib/devtools/github-merge.sh | 185 |
3 files changed, 225 insertions, 187 deletions
diff --git a/contrib/devtools/README.md b/contrib/devtools/README.md index fcb2275fc9..1103ca86c5 100644 --- a/contrib/devtools/README.md +++ b/contrib/devtools/README.md @@ -56,14 +56,14 @@ Usage: `git-subtree-check.sh DIR COMMIT` `COMMIT` may be omitted, in which case `HEAD` is used. -github-merge.sh +github-merge.py =============== A small script to automate merging pull-requests securely and sign them with GPG. For example: - ./github-merge.sh bitcoin/bitcoin 3077 + ./github-merge.py 3077 (in any git repository) will help you merge pull request #3077 for the bitcoin/bitcoin repository. diff --git a/contrib/devtools/github-merge.py b/contrib/devtools/github-merge.py new file mode 100755 index 0000000000..33d33b7005 --- /dev/null +++ b/contrib/devtools/github-merge.py @@ -0,0 +1,223 @@ +#!/usr/bin/env python2 +# Copyright (c) 2016 Bitcoin Core Developers +# Distributed under the MIT software license, see the accompanying +# file COPYING or http://www.opensource.org/licenses/mit-license.php. + +# This script will locally construct a merge commit for a pull request on a +# github repository, inspect it, sign it and optionally push it. + +# The following temporary branches are created/overwritten and deleted: +# * pull/$PULL/base (the current master we're merging onto) +# * pull/$PULL/head (the current state of the remote pull request) +# * pull/$PULL/merge (github's merge) +# * pull/$PULL/local-merge (our merge) + +# In case of a clean merge that is accepted by the user, the local branch with +# name $BRANCH is overwritten with the merged result, and optionally pushed. +from __future__ import division,print_function,unicode_literals +import os,sys +from sys import stdin,stdout,stderr +import argparse +import subprocess + +# External tools (can be overridden using environment) +GIT = os.getenv('GIT','git') +BASH = os.getenv('BASH','bash') + +def git_config_get(option, default=None): + ''' + Get named configuration option from git repository. + ''' + try: + return subprocess.check_output([GIT,'config','--get',option]).rstrip() + except subprocess.CalledProcessError as e: + return default + +def retrieve_pr_title(repo,pull): + ''' + Retrieve pull request title from github. + Return None if no title can be found, or an error happens. + ''' + import urllib2,json + try: + req = urllib2.Request("https://api.github.com/repos/"+repo+"/pulls/"+pull) + result = urllib2.urlopen(req) + result = json.load(result) + return result['title'] + except Exception as e: + print('Warning: unable to retrieve pull title from github: %s' % e) + return None + +def ask_prompt(text): + print(text,end=" ",file=stderr) + reply = stdin.readline().rstrip() + print("",file=stderr) + return reply + +def parse_arguments(branch): + 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.testcmd (default: none). + ''' + parser = argparse.ArgumentParser(description='Utility to merge, sign and push github pull requests', + epilog=epilog) + 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+')') + 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') + testcmd = git_config_get('githubmerge.testcmd') + signingkey = git_config_get('user.signingkey') + if repo is None: + print("ERROR: No repository configured. Use this command to set:", file=stderr) + print("git config githubmerge.repository <owner>/<repo>", file=stderr) + exit(1) + if signingkey is None: + print("ERROR: No GPG signing key set. Set one using:",file=stderr) + print("git config --global user.signingkey <key>",file=stderr) + exit(1) + + host_repo = host+":"+repo # shortcut for push/pull target + + # Extract settings from command line + args = parse_arguments(branch) + pull = str(args.pull[0]) + branch = args.branch + + # Initialize source branches + head_branch = 'pull/'+pull+'/head' + base_branch = 'pull/'+pull+'/base' + merge_branch = 'pull/'+pull+'/merge' + local_merge_branch = 'pull/'+pull+'/local-merge' + + devnull = open(os.devnull,'w') + try: + subprocess.check_call([GIT,'checkout','-q',branch]) + except subprocess.CalledProcessError as e: + print("ERROR: Cannot check out branch %s." % (branch), file=stderr) + exit(3) + try: + subprocess.check_call([GIT,'fetch','-q',host_repo,'+refs/pull/'+pull+'/*:refs/heads/pull/'+pull+'/*']) + except subprocess.CalledProcessError as e: + print("ERROR: Cannot find pull request #%s on %s." % (pull,host_repo), file=stderr) + exit(3) + try: + subprocess.check_call([GIT,'log','-q','-1','refs/heads/'+head_branch], stdout=devnull, stderr=stdout) + except subprocess.CalledProcessError as e: + print("ERROR: Cannot find head of pull request #%s on %s." % (pull,host_repo), file=stderr) + exit(3) + try: + subprocess.check_call([GIT,'log','-q','-1','refs/heads/'+merge_branch], stdout=devnull, stderr=stdout) + except subprocess.CalledProcessError as e: + print("ERROR: Cannot find merge of pull request #%s on %s." % (pull,host_repo), file=stderr) + exit(3) + try: + subprocess.check_call([GIT,'fetch','-q',host_repo,'+refs/heads/'+branch+':refs/heads/'+base_branch]) + except subprocess.CalledProcessError as e: + print("ERROR: Cannot find branch %s on %s." % (branch,host_repo), file=stderr) + exit(3) + subprocess.check_call([GIT,'checkout','-q',base_branch]) + subprocess.call([GIT,'branch','-q','-D',local_merge_branch], stderr=devnull) + subprocess.check_call([GIT,'checkout','-q','-b',local_merge_branch]) + + try: + # Create unsigned merge commit. + title = retrieve_pr_title(repo,pull) + if title: + firstline = 'Merge #%s: %s' % (pull,title) + else: + firstline = 'Merge #%s' % (pull,) + message = firstline + '\n\n' + message += subprocess.check_output([GIT,'log','--no-merges','--topo-order','--pretty=format:%h %s (%an)',base_branch+'..'+head_branch]) + try: + subprocess.check_call([GIT,'merge','-q','--commit','--no-edit','--no-ff','-m',message,head_branch]) + except subprocess.CalledProcessError as e: + print("ERROR: Cannot be merged cleanly.",file=stderr) + subprocess.check_call([GIT,'merge','--abort']) + exit(4) + logmsg = subprocess.check_output([GIT,'log','--pretty=format:%s','-n','1']) + if logmsg.rstrip() != firstline.rstrip(): + print("ERROR: Creating merge failed (already merged?).",file=stderr) + exit(4) + + # Run test command if configured. + if testcmd: + # Go up to the repository's root. + toplevel = subprocess.check_output([GIT,'rev-parse','--show-toplevel']) + os.chdir(toplevel) + if subprocess.call(testcmd,shell=True): + print("ERROR: Running %s failed." % testcmd,file=stderr) + exit(5) + + # Show the created merge. + diff = subprocess.check_output([GIT,'diff',merge_branch+'..'+local_merge_branch]) + subprocess.check_call([GIT,'diff',base_branch+'..'+local_merge_branch]) + if diff: + print("WARNING: merge differs from github!",file=stderr) + reply = ask_prompt("Type 'ignore' to continue.") + if reply.lower() == 'ignore': + print("Difference with github ignored.",file=stderr) + else: + exit(6) + reply = ask_prompt("Press 'd' to accept the diff.") + if reply.lower() == 'd': + print("Diff accepted.",file=stderr) + else: + print("ERROR: Diff rejected.",file=stderr) + exit(6) + else: + # Verify the result manually. + print("Dropping you on a shell so you can try building/testing the merged source.",file=stderr) + print("Run 'git diff HEAD~' to show the changes being merged.",file=stderr) + print("Type 'exit' when done.",file=stderr) + if os.path.isfile('/etc/debian_version'): # Show pull number on Debian default prompt + os.putenv('debian_chroot',pull) + subprocess.call([BASH,'-i']) + reply = ask_prompt("Type 'm' to accept the merge.") + if reply.lower() == 'm': + print("Merge accepted.",file=stderr) + else: + print("ERROR: Merge rejected.",file=stderr) + exit(7) + + # Sign the merge commit. + reply = ask_prompt("Type 's' to sign off on the merge.") + if reply == 's': + try: + subprocess.check_call([GIT,'commit','-q','--gpg-sign','--amend','--no-edit']) + except subprocess.CalledProcessError as e: + print("Error signing, exiting.",file=stderr) + exit(1) + else: + print("Not signing off on merge, exiting.",file=stderr) + exit(1) + + # Put the result in branch. + subprocess.check_call([GIT,'checkout','-q',branch]) + subprocess.check_call([GIT,'reset','-q','--hard',local_merge_branch]) + finally: + # Clean up temporary branches. + subprocess.call([GIT,'checkout','-q',branch]) + subprocess.call([GIT,'branch','-q','-D',head_branch],stderr=devnull) + subprocess.call([GIT,'branch','-q','-D',base_branch],stderr=devnull) + subprocess.call([GIT,'branch','-q','-D',merge_branch],stderr=devnull) + subprocess.call([GIT,'branch','-q','-D',local_merge_branch],stderr=devnull) + + # Push the result. + reply = ask_prompt("Type 'push' to push the result to %s, branch %s." % (host_repo,branch)) + if reply.lower() == 'push': + subprocess.check_call([GIT,'push',host_repo,'refs/heads/'+branch]) + +if __name__ == '__main__': + main() + diff --git a/contrib/devtools/github-merge.sh b/contrib/devtools/github-merge.sh deleted file mode 100755 index afb53f0390..0000000000 --- a/contrib/devtools/github-merge.sh +++ /dev/null @@ -1,185 +0,0 @@ -#!/bin/bash - -# This script will locally construct a merge commit for a pull request on a -# github repository, inspect it, sign it and optionally push it. - -# The following temporary branches are created/overwritten and deleted: -# * pull/$PULL/base (the current master we're merging onto) -# * pull/$PULL/head (the current state of the remote pull request) -# * pull/$PULL/merge (github's merge) -# * pull/$PULL/local-merge (our merge) - -# In case of a clean merge that is accepted by the user, the local branch with -# name $BRANCH is overwritten with the merged result, and optionally pushed. - -REPO="$(git config --get githubmerge.repository)" -if [[ "d$REPO" == "d" ]]; then - echo "ERROR: No repository configured. Use this command to set:" >&2 - echo "git config githubmerge.repository <owner>/<repo>" >&2 - echo "In addition, you can set the following variables:" >&2 - echo "- githubmerge.host (default git@github.com)" >&2 - echo "- githubmerge.branch (default master)" >&2 - echo "- githubmerge.testcmd (default none)" >&2 - exit 1 -fi - -HOST="$(git config --get githubmerge.host)" -if [[ "d$HOST" == "d" ]]; then - HOST="git@github.com" -fi - -BRANCH="$(git config --get githubmerge.branch)" -if [[ "d$BRANCH" == "d" ]]; then - BRANCH="master" -fi - -TESTCMD="$(git config --get githubmerge.testcmd)" - -PULL="$1" - -if [[ "d$PULL" == "d" ]]; then - echo "Usage: $0 pullnumber [branch]" >&2 - exit 2 -fi - -if [[ "d$2" != "d" ]]; then - BRANCH="$2" -fi - -# Initialize source branches. -git checkout -q "$BRANCH" -if git fetch -q "$HOST":"$REPO" "+refs/pull/$PULL/*:refs/heads/pull/$PULL/*"; then - if ! git log -q -1 "refs/heads/pull/$PULL/head" >/dev/null 2>&1; then - echo "ERROR: Cannot find head of pull request #$PULL on $HOST:$REPO." >&2 - exit 3 - fi - if ! git log -q -1 "refs/heads/pull/$PULL/merge" >/dev/null 2>&1; then - echo "ERROR: Cannot find merge of pull request #$PULL on $HOST:$REPO." >&2 - exit 3 - fi -else - echo "ERROR: Cannot find pull request #$PULL on $HOST:$REPO." >&2 - exit 3 -fi -if git fetch -q "$HOST":"$REPO" +refs/heads/"$BRANCH":refs/heads/pull/"$PULL"/base; then - true -else - echo "ERROR: Cannot find branch $BRANCH on $HOST:$REPO." >&2 - exit 3 -fi -git checkout -q pull/"$PULL"/base -git branch -q -D pull/"$PULL"/local-merge 2>/dev/null -git checkout -q -b pull/"$PULL"/local-merge -TMPDIR="$(mktemp -d -t ghmXXXXX)" - -function cleanup() { - git checkout -q "$BRANCH" - git branch -q -D pull/"$PULL"/head 2>/dev/null - git branch -q -D pull/"$PULL"/base 2>/dev/null - git branch -q -D pull/"$PULL"/merge 2>/dev/null - git branch -q -D pull/"$PULL"/local-merge 2>/dev/null - rm -rf "$TMPDIR" -} - -# Create unsigned merge commit. -( - echo "Merge pull request #$PULL" - echo "" - git log --no-merges --topo-order --pretty='format:%h %s (%an)' pull/"$PULL"/base..pull/"$PULL"/head -)>"$TMPDIR/message" -if git merge -q --commit --no-edit --no-ff -m "$(<"$TMPDIR/message")" pull/"$PULL"/head; then - if [ "d$(git log --pretty='format:%s' -n 1)" != "dMerge pull request #$PULL" ]; then - echo "ERROR: Creating merge failed (already merged?)." >&2 - cleanup - exit 4 - fi -else - echo "ERROR: Cannot be merged cleanly." >&2 - git merge --abort - cleanup - exit 4 -fi - -# Run test command if configured. -if [[ "d$TESTCMD" != "d" ]]; then - # Go up to the repository's root. - while [ ! -d .git ]; do cd ..; done - if ! $TESTCMD; then - echo "ERROR: Running $TESTCMD failed." >&2 - cleanup - exit 5 - fi - # Show the created merge. - git diff pull/"$PULL"/merge..pull/"$PULL"/local-merge >"$TMPDIR"/diff - git diff pull/"$PULL"/base..pull/"$PULL"/local-merge - if [[ "$(<"$TMPDIR"/diff)" != "" ]]; then - echo "WARNING: merge differs from github!" >&2 - read -p "Type 'ignore' to continue. " -r >&2 - if [[ "d$REPLY" =~ ^d[iI][gG][nN][oO][rR][eE]$ ]]; then - echo "Difference with github ignored." >&2 - else - cleanup - exit 6 - fi - fi - read -p "Press 'd' to accept the diff. " -n 1 -r >&2 - echo - if [[ "d$REPLY" =~ ^d[dD]$ ]]; then - echo "Diff accepted." >&2 - else - echo "ERROR: Diff rejected." >&2 - cleanup - exit 6 - fi -else - # Verify the result. - echo "Dropping you on a shell so you can try building/testing the merged source." >&2 - echo "Run 'git diff HEAD~' to show the changes being merged." >&2 - echo "Type 'exit' when done." >&2 - if [[ -f /etc/debian_version ]]; then # Show pull number in prompt on Debian default prompt - export debian_chroot="$PULL" - fi - bash -i - read -p "Press 'm' to accept the merge. " -n 1 -r >&2 - echo - if [[ "d$REPLY" =~ ^d[Mm]$ ]]; then - echo "Merge accepted." >&2 - else - echo "ERROR: Merge rejected." >&2 - cleanup - exit 7 - fi -fi - -# Sign the merge commit. -read -p "Press 's' to sign off on the merge. " -n 1 -r >&2 -echo -if [[ "d$REPLY" =~ ^d[Ss]$ ]]; then - if [[ "$(git config --get user.signingkey)" == "" ]]; then - echo "ERROR: No GPG signing key set, not signing. Set one using:" >&2 - echo "git config --global user.signingkey <key>" >&2 - cleanup - exit 1 - else - if ! git commit -q --gpg-sign --amend --no-edit; then - echo "Error signing, exiting." - cleanup - exit 1 - fi - fi -else - echo "Not signing off on merge, exiting." - cleanup - exit 1 -fi - -# Clean up temporary branches, and put the result in $BRANCH. -git checkout -q "$BRANCH" -git reset -q --hard pull/"$PULL"/local-merge -cleanup - -# Push the result. -read -p "Type 'push' to push the result to $HOST:$REPO, branch $BRANCH. " -r >&2 -if [[ "d$REPLY" =~ ^d[Pp][Uu][Ss][Hh]$ ]]; then - git push "$HOST":"$REPO" refs/heads/"$BRANCH" -fi |