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#!/usr/bin/env python
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Utility for creating well-formed pull request merges and pushing them to Apache
# Spark.
# usage: ./merge_spark_pr.py (see config env vars below)
#
# This utility assumes you already have a local Spark git folder and that you
# have added remotes corresponding to both (i) the github apache Spark
# mirror and (ii) the apache git repo.
import json
import os
import re
import subprocess
import sys
import traceback
import urllib2
try:
import jira.client
JIRA_IMPORTED = True
except ImportError:
JIRA_IMPORTED = False
if sys.version < '3':
input = raw_input # noqa
# Location of your Spark git development area
SPARK_HOME = os.environ.get("SPARK_HOME", os.getcwd())
# Remote name which points to the Gihub site
PR_REMOTE_NAME = os.environ.get("PR_REMOTE_NAME", "apache-github")
# Remote name which points to Apache git
PUSH_REMOTE_NAME = os.environ.get("PUSH_REMOTE_NAME", "apache")
# ASF JIRA username
JIRA_USERNAME = os.environ.get("JIRA_USERNAME", "")
# ASF JIRA password
JIRA_PASSWORD = os.environ.get("JIRA_PASSWORD", "")
# OAuth key used for issuing requests against the GitHub API. If this is not defined, then requests
# will be unauthenticated. You should only need to configure this if you find yourself regularly
# exceeding your IP's unauthenticated request rate limit. You can create an OAuth key at
# https://github.com/settings/tokens. This script only requires the "public_repo" scope.
GITHUB_OAUTH_KEY = os.environ.get("GITHUB_OAUTH_KEY")
GITHUB_BASE = "https://github.com/apache/spark/pull"
GITHUB_API_BASE = "https://api.github.com/repos/apache/spark"
JIRA_BASE = "https://issues.apache.org/jira/browse"
JIRA_API_BASE = "https://issues.apache.org/jira"
# Prefix added to temporary branches
BRANCH_PREFIX = "PR_TOOL"
def get_json(url):
try:
request = urllib2.Request(url)
if GITHUB_OAUTH_KEY:
request.add_header('Authorization', 'token %s' % GITHUB_OAUTH_KEY)
return json.load(urllib2.urlopen(request))
except urllib2.HTTPError as e:
if "X-RateLimit-Remaining" in e.headers and e.headers["X-RateLimit-Remaining"] == '0':
print("Exceeded the GitHub API rate limit; see the instructions in " +
"dev/merge_spark_pr.py to configure an OAuth token for making authenticated " +
"GitHub requests.")
else:
print("Unable to fetch URL, exiting: %s" % url)
sys.exit(-1)
def fail(msg):
print(msg)
clean_up()
sys.exit(-1)
def run_cmd(cmd):
print(cmd)
if isinstance(cmd, list):
return subprocess.check_output(cmd)
else:
return subprocess.check_output(cmd.split(" "))
def continue_maybe(prompt):
result = input("\n%s (y/n): " % prompt)
if result.lower() != "y":
fail("Okay, exiting")
def clean_up():
if 'original_head' in globals():
print("Restoring head pointer to %s" % original_head)
run_cmd("git checkout %s" % original_head)
branches = run_cmd("git branch").replace(" ", "").split("\n")
for branch in filter(lambda x: x.startswith(BRANCH_PREFIX), branches):
print("Deleting local branch %s" % branch)
run_cmd("git branch -D %s" % branch)
# merge the requested PR and return the merge hash
def merge_pr(pr_num, target_ref, title, body, pr_repo_desc):
pr_branch_name = "%s_MERGE_PR_%s" % (BRANCH_PREFIX, pr_num)
target_branch_name = "%s_MERGE_PR_%s_%s" % (BRANCH_PREFIX, pr_num, target_ref.upper())
run_cmd("git fetch %s pull/%s/head:%s" % (PR_REMOTE_NAME, pr_num, pr_branch_name))
run_cmd("git fetch %s %s:%s" % (PUSH_REMOTE_NAME, target_ref, target_branch_name))
run_cmd("git checkout %s" % target_branch_name)
had_conflicts = False
try:
run_cmd(['git', 'merge', pr_branch_name, '--squash'])
except Exception as e:
msg = "Error merging: %s\nWould you like to manually fix-up this merge?" % e
continue_maybe(msg)
msg = "Okay, please fix any conflicts and 'git add' conflicting files... Finished?"
continue_maybe(msg)
had_conflicts = True
commit_authors = run_cmd(['git', 'log', 'HEAD..%s' % pr_branch_name,
'--pretty=format:%an <%ae>']).split("\n")
distinct_authors = sorted(set(commit_authors),
key=lambda x: commit_authors.count(x), reverse=True)
primary_author = input(
"Enter primary author in the format of \"name <email>\" [%s]: " %
distinct_authors[0])
if primary_author == "":
primary_author = distinct_authors[0]
else:
# When primary author is specified manually, de-dup it from author list and
# put it at the head of author list.
distinct_authors = list(filter(lambda x: x != primary_author, distinct_authors))
distinct_authors.insert(0, primary_author)
commits = run_cmd(['git', 'log', 'HEAD..%s' % pr_branch_name,
'--pretty=format:%h [%an] %s']).split("\n\n")
merge_message_flags = []
merge_message_flags += ["-m", title]
if body is not None:
# We remove @ symbols from the body to avoid triggering e-mails
# to people every time someone creates a public fork of Spark.
merge_message_flags += ["-m", body.replace("@", "")]
committer_name = run_cmd("git config --get user.name").strip()
committer_email = run_cmd("git config --get user.email").strip()
if had_conflicts:
message = "This patch had conflicts when merged, resolved by\nCommitter: %s <%s>" % (
committer_name, committer_email)
merge_message_flags += ["-m", message]
# The string "Closes #%s" string is required for GitHub to correctly close the PR
merge_message_flags += ["-m", "Closes #%s from %s." % (pr_num, pr_repo_desc)]
authors = "Authored-by:" if len(distinct_authors) == 1 else "Lead-authored-by:"
authors += " %s" % (distinct_authors.pop(0))
if len(distinct_authors) > 0:
authors += "\n" + "\n".join(["Co-authored-by: %s" % a for a in distinct_authors])
authors += "\n" + "Signed-off-by: %s <%s>" % (committer_name, committer_email)
merge_message_flags += ["-m", authors]
run_cmd(['git', 'commit', '--author="%s"' % primary_author] + merge_message_flags)
continue_maybe("Merge complete (local ref %s). Push to %s?" % (
target_branch_name, PUSH_REMOTE_NAME))
try:
run_cmd('git push %s %s:%s' % (PUSH_REMOTE_NAME, target_branch_name, target_ref))
except Exception as e:
clean_up()
fail("Exception while pushing: %s" % e)
merge_hash = run_cmd("git rev-parse %s" % target_branch_name)[:8]
clean_up()
print("Pull request #%s merged!" % pr_num)
print("Merge hash: %s" % merge_hash)
return merge_hash
def cherry_pick(pr_num, merge_hash, default_branch):
pick_ref = input("Enter a branch name [%s]: " % default_branch)
if pick_ref == "":
pick_ref = default_branch
pick_branch_name = "%s_PICK_PR_%s_%s" % (BRANCH_PREFIX, pr_num, pick_ref.upper())
run_cmd("git fetch %s %s:%s" % (PUSH_REMOTE_NAME, pick_ref, pick_branch_name))
run_cmd("git checkout %s" % pick_branch_name)
try:
run_cmd("git cherry-pick -sx %s" % merge_hash)
except Exception as e:
msg = "Error cherry-picking: %s\nWould you like to manually fix-up this merge?" % e
continue_maybe(msg)
msg = "Okay, please fix any conflicts and finish the cherry-pick. Finished?"
continue_maybe(msg)
continue_maybe("Pick complete (local ref %s). Push to %s?" % (
pick_branch_name, PUSH_REMOTE_NAME))
try:
run_cmd('git push %s %s:%s' % (PUSH_REMOTE_NAME, pick_branch_name, pick_ref))
except Exception as e:
clean_up()
fail("Exception while pushing: %s" % e)
pick_hash = run_cmd("git rev-parse %s" % pick_branch_name)[:8]
clean_up()
print("Pull request #%s picked into %s!" % (pr_num, pick_ref))
print("Pick hash: %s" % pick_hash)
return pick_ref
def fix_version_from_branch(branch, versions):
# Note: Assumes this is a sorted (newest->oldest) list of un-released versions
if branch == "master":
return versions[0]
else:
branch_ver = branch.replace("branch-", "")
return filter(lambda x: x.name.startswith(branch_ver), versions)[-1]
def resolve_jira_issue(merge_branches, comment, default_jira_id=""):
asf_jira = jira.client.JIRA({'server': JIRA_API_BASE},
basic_auth=(JIRA_USERNAME, JIRA_PASSWORD))
jira_id = input("Enter a JIRA id [%s]: " % default_jira_id)
if jira_id == "":
jira_id = default_jira_id
try:
issue = asf_jira.issue(jira_id)
except Exception as e:
fail("ASF JIRA could not find %s\n%s" % (jira_id, e))
cur_status = issue.fields.status.name
cur_summary = issue.fields.summary
cur_assignee = issue.fields.assignee
if cur_assignee is None:
cur_assignee = choose_jira_assignee(issue, asf_jira)
# Check again, we might not have chosen an assignee
if cur_assignee is None:
cur_assignee = "NOT ASSIGNED!!!"
else:
cur_assignee = cur_assignee.displayName
if cur_status == "Resolved" or cur_status == "Closed":
fail("JIRA issue %s already has status '%s'" % (jira_id, cur_status))
print("=== JIRA %s ===" % jira_id)
print("summary\t\t%s\nassignee\t%s\nstatus\t\t%s\nurl\t\t%s/%s\n" %
(cur_summary, cur_assignee, cur_status, JIRA_BASE, jira_id))
versions = asf_jira.project_versions("SPARK")
versions = sorted(versions, key=lambda x: x.name, reverse=True)
versions = filter(lambda x: x.raw['released'] is False, versions)
# Consider only x.y.z versions
versions = filter(lambda x: re.match(r'\d+\.\d+\.\d+', x.name), versions)
default_fix_versions = map(lambda x: fix_version_from_branch(x, versions).name, merge_branches)
for v in default_fix_versions:
# Handles the case where we have forked a release branch but not yet made the release.
# In this case, if the PR is committed to the master branch and the release branch, we
# only consider the release branch to be the fix version. E.g. it is not valid to have
# both 1.1.0 and 1.0.0 as fix versions.
(major, minor, patch) = v.split(".")
if patch == "0":
previous = "%s.%s.%s" % (major, int(minor) - 1, 0)
if previous in default_fix_versions:
default_fix_versions = filter(lambda x: x != v, default_fix_versions)
default_fix_versions = ",".join(default_fix_versions)
fix_versions = input("Enter comma-separated fix version(s) [%s]: " % default_fix_versions)
if fix_versions == "":
fix_versions = default_fix_versions
fix_versions = fix_versions.replace(" ", "").split(",")
def get_version_json(version_str):
return filter(lambda v: v.name == version_str, versions)[0].raw
jira_fix_versions = map(lambda v: get_version_json(v), fix_versions)
resolve = filter(lambda a: a['name'] == "Resolve Issue", asf_jira.transitions(jira_id))[0]
resolution = filter(lambda r: r.raw['name'] == "Fixed", asf_jira.resolutions())[0]
asf_jira.transition_issue(
jira_id, resolve["id"], fixVersions=jira_fix_versions,
comment=comment, resolution={'id': resolution.raw['id']})
print("Successfully resolved %s with fixVersions=%s!" % (jira_id, fix_versions))
def choose_jira_assignee(issue, asf_jira):
"""
Prompt the user to choose who to assign the issue to in jira, given a list of candidates,
including the original reporter and all commentors
"""
while True:
try:
reporter = issue.fields.reporter
commentors = map(lambda x: x.author, issue.fields.comment.comments)
candidates = set(commentors)
candidates.add(reporter)
candidates = list(candidates)
print("JIRA is unassigned, choose assignee")
for idx, author in enumerate(candidates):
if author.key == "apachespark":
continue
annotations = ["Reporter"] if author == reporter else []
if author in commentors:
annotations.append("Commentor")
print("[%d] %s (%s)" % (idx, author.displayName, ",".join(annotations)))
raw_assignee = input(
"Enter number of user, or userid, to assign to (blank to leave unassigned):")
if raw_assignee == "":
return None
else:
try:
id = int(raw_assignee)
assignee = candidates[id]
except:
# assume it's a user id, and try to assign (might fail, we just prompt again)
assignee = asf_jira.user(raw_assignee)
asf_jira.assign_issue(issue.key, assignee.key)
return assignee
except KeyboardInterrupt:
raise
except:
traceback.print_exc()
print("Error assigning JIRA, try again (or leave blank and fix manually)")
def resolve_jira_issues(title, merge_branches, comment):
jira_ids = re.findall("SPARK-[0-9]{4,5}", title)
if len(jira_ids) == 0:
resolve_jira_issue(merge_branches, comment)
for jira_id in jira_ids:
resolve_jira_issue(merge_branches, comment, jira_id)
def standardize_jira_ref(text):
"""
Standardize the [SPARK-XXXXX] [MODULE] prefix
Converts "[SPARK-XXX][mllib] Issue", "[MLLib] SPARK-XXX. Issue" or "SPARK XXX [MLLIB]: Issue" to
"[SPARK-XXX][MLLIB] Issue"
>>> standardize_jira_ref(
... "[SPARK-5821] [SQL] ParquetRelation2 CTAS should check if delete is successful")
'[SPARK-5821][SQL] ParquetRelation2 CTAS should check if delete is successful'
>>> standardize_jira_ref(
... "[SPARK-4123][Project Infra][WIP]: Show new dependencies added in pull requests")
'[SPARK-4123][PROJECT INFRA][WIP] Show new dependencies added in pull requests'
>>> standardize_jira_ref("[MLlib] Spark 5954: Top by key")
'[SPARK-5954][MLLIB] Top by key'
>>> standardize_jira_ref("[SPARK-979] a LRU scheduler for load balancing in TaskSchedulerImpl")
'[SPARK-979] a LRU scheduler for load balancing in TaskSchedulerImpl'
>>> standardize_jira_ref(
... "SPARK-1094 Support MiMa for reporting binary compatibility across versions.")
'[SPARK-1094] Support MiMa for reporting binary compatibility across versions.'
>>> standardize_jira_ref("[WIP] [SPARK-1146] Vagrant support for Spark")
'[SPARK-1146][WIP] Vagrant support for Spark'
>>> standardize_jira_ref(
... "SPARK-1032. If Yarn app fails before registering, app master stays aroun...")
'[SPARK-1032] If Yarn app fails before registering, app master stays aroun...'
>>> standardize_jira_ref(
... "[SPARK-6250][SPARK-6146][SPARK-5911][SQL] Types are now reserved words in DDL parser.")
'[SPARK-6250][SPARK-6146][SPARK-5911][SQL] Types are now reserved words in DDL parser.'
>>> standardize_jira_ref("Additional information for users building from source code")
'Additional information for users building from source code'
"""
jira_refs = []
components = []
# If the string is compliant, no need to process any further
if (re.search(r'^\[SPARK-[0-9]{3,6}\](\[[A-Z0-9_\s,]+\] )+\S+', text)):
return text
# Extract JIRA ref(s):
pattern = re.compile(r'(SPARK[-\s]*[0-9]{3,6})+', re.IGNORECASE)
for ref in pattern.findall(text):
# Add brackets, replace spaces with a dash, & convert to uppercase
jira_refs.append('[' + re.sub(r'\s+', '-', ref.upper()) + ']')
text = text.replace(ref, '')
# Extract spark component(s):
# Look for alphanumeric chars, spaces, dashes, periods, and/or commas
pattern = re.compile(r'(\[[\w\s,.-]+\])', re.IGNORECASE)
for component in pattern.findall(text):
components.append(component.upper())
text = text.replace(component, '')
# Cleanup any remaining symbols:
pattern = re.compile(r'^\W+(.*)', re.IGNORECASE)
if (pattern.search(text) is not None):
text = pattern.search(text).groups()[0]
# Assemble full text (JIRA ref(s), module(s), remaining text)
clean_text = ''.join(jira_refs).strip() + ''.join(components).strip() + " " + text.strip()
# Replace multiple spaces with a single space, e.g. if no jira refs and/or components were
# included
clean_text = re.sub(r'\s+', ' ', clean_text.strip())
return clean_text
def get_current_ref():
ref = run_cmd("git rev-parse --abbrev-ref HEAD").strip()
if ref == 'HEAD':
# The current ref is a detached HEAD, so grab its SHA.
return run_cmd("git rev-parse HEAD").strip()
else:
return ref
def main():
global original_head
os.chdir(SPARK_HOME)
original_head = get_current_ref()
# Check this up front to avoid failing the JIRA update at the very end
if not JIRA_USERNAME or not JIRA_PASSWORD:
continue_maybe("The env-vars JIRA_USERNAME and/or JIRA_PASSWORD are not set. Continue?")
branches = get_json("%s/branches" % GITHUB_API_BASE)
branch_names = filter(lambda x: x.startswith("branch-"), [x['name'] for x in branches])
# Assumes branch names can be sorted lexicographically
latest_branch = sorted(branch_names, reverse=True)[0]
pr_num = input("Which pull request would you like to merge? (e.g. 34): ")
pr = get_json("%s/pulls/%s" % (GITHUB_API_BASE, pr_num))
pr_events = get_json("%s/issues/%s/events" % (GITHUB_API_BASE, pr_num))
url = pr["url"]
# Decide whether to use the modified title or not
modified_title = standardize_jira_ref(pr["title"])
if modified_title != pr["title"]:
print("I've re-written the title as follows to match the standard format:")
print("Original: %s" % pr["title"])
print("Modified: %s" % modified_title)
result = input("Would you like to use the modified title? (y/n): ")
if result.lower() == "y":
title = modified_title
print("Using modified title:")
else:
title = pr["title"]
print("Using original title:")
print(title)
else:
title = pr["title"]
body = pr["body"]
target_ref = pr["base"]["ref"]
user_login = pr["user"]["login"]
base_ref = pr["head"]["ref"]
pr_repo_desc = "%s/%s" % (user_login, base_ref)
# Merged pull requests don't appear as merged in the GitHub API;
# Instead, they're closed by asfgit.
merge_commits = \
[e for e in pr_events if e["actor"]["login"] == "asfgit" and e["event"] == "closed"]
if merge_commits:
merge_hash = merge_commits[0]["commit_id"]
message = get_json("%s/commits/%s" % (GITHUB_API_BASE, merge_hash))["commit"]["message"]
print("Pull request %s has already been merged, assuming you want to backport" % pr_num)
commit_is_downloaded = run_cmd(['git', 'rev-parse', '--quiet', '--verify',
"%s^{commit}" % merge_hash]).strip() != ""
if not commit_is_downloaded:
fail("Couldn't find any merge commit for #%s, you may need to update HEAD." % pr_num)
print("Found commit %s:\n%s" % (merge_hash, message))
cherry_pick(pr_num, merge_hash, latest_branch)
sys.exit(0)
if not bool(pr["mergeable"]):
msg = "Pull request %s is not mergeable in its current form.\n" % pr_num + \
"Continue? (experts only!)"
continue_maybe(msg)
print("\n=== Pull Request #%s ===" % pr_num)
print("title\t%s\nsource\t%s\ntarget\t%s\nurl\t%s" %
(title, pr_repo_desc, target_ref, url))
continue_maybe("Proceed with merging pull request #%s?" % pr_num)
merged_refs = [target_ref]
merge_hash = merge_pr(pr_num, target_ref, title, body, pr_repo_desc)
pick_prompt = "Would you like to pick %s into another branch?" % merge_hash
while input("\n%s (y/n): " % pick_prompt).lower() == "y":
merged_refs = merged_refs + [cherry_pick(pr_num, merge_hash, latest_branch)]
if JIRA_IMPORTED:
if JIRA_USERNAME and JIRA_PASSWORD:
continue_maybe("Would you like to update an associated JIRA?")
jira_comment = "Issue resolved by pull request %s\n[%s/%s]" % \
(pr_num, GITHUB_BASE, pr_num)
resolve_jira_issues(title, merged_refs, jira_comment)
else:
print("JIRA_USERNAME and JIRA_PASSWORD not set")
print("Exiting without trying to close the associated JIRA.")
else:
print("Could not find jira-python library. Run 'sudo pip install jira' to install.")
print("Exiting without trying to close the associated JIRA.")
if __name__ == "__main__":
import doctest
(failure_count, test_count) = doctest.testmod()
if failure_count:
sys.exit(-1)
try:
main()
except:
clean_up()
raise