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From jul...@apache.org
Subject git commit: PARQUET-58: Add PR merge tool
Date Tue, 05 Aug 2014 18:53:03 GMT
Repository: incubator-parquet-format
Updated Branches:
  refs/heads/master 090444ca7 -> b3e928e48


PARQUET-58: Add PR merge tool

This is a copy of the merge tool from incubator-parquet-mr. I've used it to merge a PR already,
so it works.

Author: Ryan Blue <rblue@cloudera.com>

Closes #4 from rdblue/PARQUET-58-add-merge-tool and squashes the following commits:

b06c32c [Ryan Blue] PARQUET-58: Add PR merge tool and docs.


Project: http://git-wip-us.apache.org/repos/asf/incubator-parquet-format/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-parquet-format/commit/b3e928e4
Tree: http://git-wip-us.apache.org/repos/asf/incubator-parquet-format/tree/b3e928e4
Diff: http://git-wip-us.apache.org/repos/asf/incubator-parquet-format/diff/b3e928e4

Branch: refs/heads/master
Commit: b3e928e48a013c7170e93a0cce71a776825cb50d
Parents: 090444c
Author: Ryan Blue <rblue@cloudera.com>
Authored: Tue Aug 5 11:52:46 2014 -0700
Committer: julien <julien@twitter.com>
Committed: Tue Aug 5 11:52:46 2014 -0700

----------------------------------------------------------------------
 dev/README.md           |  74 ++++++++++
 dev/merge_parquet_pr.py | 342 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 416 insertions(+)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/incubator-parquet-format/blob/b3e928e4/dev/README.md
----------------------------------------------------------------------
diff --git a/dev/README.md b/dev/README.md
new file mode 100644
index 0000000..352c25d
--- /dev/null
+++ b/dev/README.md
@@ -0,0 +1,74 @@
+# Parquet Developer Scripts
+This directory contains scripts useful to developers when packaging,
+testing, or committing to Parquet.
+
+Merging a pull request requires being a committer on the project.
+
+* How to merge a Pull request:
+have an apache and apache-github remote setup
+```
+git remote add apache-github git@github.com:apache/incubator-parquet-format.git
+git remote add apache https://git-wip-us.apache.org/repos/asf/incubator-parquet-format.git
+```
+run the following command
+```
+dev/merge_parquet_pr.py
+```
+
+Note:
+* The parent directory of your parquet repository must be called parquet-format
+* Without jira-python installed you'll have to close the JIRA manually
+
+example output:
+```
+Which pull request would you like to merge? (e.g. 34):
+```
+Type the pull request number (from https://github.com/apache/incubator-parquet-format/pulls)
and hit enter.
+```
+=== Pull Request #X ===
+title	Blah Blah Blah
+source	repo/branch
+target	master
+url	https://api.github.com/repos/apache/incubator-parquet-format/pulls/X
+
+Proceed with merging pull request #3? (y/n): 
+```
+If this looks good, type y and hit enter.
+```
+From git-wip-us.apache.org:/repos/asf/incubator-parquet-format.git
+ * [new branch]      master     -> PR_TOOL_MERGE_PR_3_MASTER
+Switched to branch 'PR_TOOL_MERGE_PR_3_MASTER'
+
+Merge complete (local ref PR_TOOL_MERGE_PR_3_MASTER). Push to apache? (y/n):
+```
+A local branch with the merge has been created.
+type y and hit enter to push it to apache master
+```
+Counting objects: 67, done.
+Delta compression using up to 4 threads.
+Compressing objects: 100% (26/26), done.
+Writing objects: 100% (36/36), 5.32 KiB, done.
+Total 36 (delta 17), reused 0 (delta 0)
+To git-wip-us.apache.org:/repos/asf/incubator-parquet-format.git
+   b767ac4..485658a  PR_TOOL_MERGE_PR_X_MASTER -> master
+Restoring head pointer to b767ac4e
+Note: checking out 'b767ac4e'.
+
+You are in 'detached HEAD' state. You can look around, make experimental
+changes and commit them, and you can discard any commits you make in this
+state without impacting any branches by performing another checkout.
+
+If you want to create a new branch to retain commits you create, you may
+do so (now or later) by using -b with the checkout command again. Example:
+
+  git checkout -b new_branch_name
+
+HEAD is now at b767ac4... Update README.md
+Deleting local branch PR_TOOL_MERGE_PR_X
+Deleting local branch PR_TOOL_MERGE_PR_X_MASTER
+Pull request #X merged!
+Merge hash: 485658a5
+
+Would you like to pick 485658a5 into another branch? (y/n):
+```
+For now just say n as we have 1 branch

http://git-wip-us.apache.org/repos/asf/incubator-parquet-format/blob/b3e928e4/dev/merge_parquet_pr.py
----------------------------------------------------------------------
diff --git a/dev/merge_parquet_pr.py b/dev/merge_parquet_pr.py
new file mode 100755
index 0000000..413f2df
--- /dev/null
+++ b/dev/merge_parquet_pr.py
@@ -0,0 +1,342 @@
+#!/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.
+#   usage: ./apache-pr-merge.py    (see config env vars below)
+#
+# This utility assumes you already have local a Parquet git folder and that you
+# have added remotes corresponding to both (i) the github apache Parquet
+# mirror and (ii) the apache git repo.
+
+import json
+import os
+import re
+import subprocess
+import sys
+import tempfile
+import urllib2
+
+try:
+    import jira.client
+    JIRA_IMPORTED = True
+except ImportError:
+    JIRA_IMPORTED = False
+
+# Location of your Parquet git development area
+PARQUET_HOME = os.path.abspath(__file__).rsplit("/", 2)[0]
+PROJECT_NAME = PARQUET_HOME.rsplit("/", 1)[1]
+if PROJECT_NAME.find("incubator-") != 0:
+  PROJECT_NAME = "incubator-" + PROJECT_NAME
+print "PARQUET_HOME = " + PARQUET_HOME
+print "PROJECT_NAME = " + PROJECT_NAME
+
+# 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")
+
+GITHUB_BASE = "https://github.com/apache/" + PROJECT_NAME + "/pull"
+GITHUB_API_BASE = "https://api.github.com/repos/apache/" + PROJECT_NAME
+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"
+
+os.chdir(PARQUET_HOME)
+
+
+def get_json(url):
+    try:
+        return json.load(urllib2.urlopen(url))
+    except urllib2.HTTPError as e:
+        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):
+    if isinstance(cmd, list):
+        return subprocess.check_output(cmd)
+    else:
+        return subprocess.check_output(cmd.split(" "))
+
+
+def continue_maybe(prompt):
+    result = raw_input("\n%s (y/n): " % prompt)
+    if result.lower() != "y":
+        fail("Okay, exiting")
+
+
+original_head = run_cmd("git rev-parse HEAD")[:8]
+
+
+def clean_up():
+    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):
+    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 = distinct_authors[0]
+    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 != None:
+        merge_message_flags += ["-m", body]
+
+    authors = "\n".join(["Author: %s" % a for a in distinct_authors])
+
+    merge_message_flags += ["-m", authors]
+
+    if had_conflicts:
+        committer_name = run_cmd("git config --get user.name").strip()
+        committer_email = run_cmd("git config --get user.email").strip()
+        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 and squashes the following commits:" % (pr_num, pr_repo_desc)]
+    for c in commits:
+        merge_message_flags += ["-m", c]
+
+    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 = raw_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)
+    run_cmd("git cherry-pick -sx %s" % merge_hash)
+
+    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(title, merge_branches, comment):
+    asf_jira = jira.client.JIRA({'server': JIRA_API_BASE},
+                                basic_auth=(JIRA_USERNAME, JIRA_PASSWORD))
+
+    default_jira_id = ""
+    search = re.findall("SPARK-[0-9]{4,5}", title)
+    if len(search) > 0:
+        default_jira_id = search[0]
+
+    jira_id = raw_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 = "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("PARQUET")
+    versions = sorted(versions, key=lambda x: x.name, reverse=True)
+    versions = filter(lambda x: x.raw['released'] is False, 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 = raw_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]
+    asf_jira.transition_issue(
+        jira_id, resolve["id"], fixVersions=jira_fix_versions, comment=comment)
+
+    print "Succesfully resolved %s with fixVersions=%s!" % (jira_id, fix_versions)
+
+
+if not JIRA_USERNAME:
+    JIRA_USERNAME =  raw_input("Env JIRA_USERNAME not set, please enter your JIRA username:")
+
+if not JIRA_PASSWORD:
+    JIRA_PASSWORD =  raw_input("Env JIRA_PASSWORD not set, please enter your JIRA password:")
+
+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
+# Julien: I commented this out as we don't have any "branch-*" branch yet
+#latest_branch = sorted(branch_names, reverse=True)[0]
+
+pr_num = raw_input("Which pull request would you like to merge? (e.g. 34): ")
+pr = get_json("%s/pulls/%s" % (GITHUB_API_BASE, pr_num))
+
+url = pr["url"]
+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)
+
+if pr["merged"] is True:
+    print "Pull request %s has already been merged, assuming you want to backport" % pr_num
+    merge_commit_desc = run_cmd([
+        'git', 'log', '--merges', '--first-parent',
+        '--grep=pull request #%s' % pr_num, '--oneline']).split("\n")[0]
+    if merge_commit_desc == "":
+        fail("Couldn't find any merge commit for #%s, you may need to update HEAD." % pr_num)
+
+    merge_hash = merge_commit_desc[:7]
+    message = merge_commit_desc[8:]
+
+    print "Found: %s" % message
+    maybe_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)
+
+pick_prompt = "Would you like to pick %s into another branch?" % merge_hash
+while raw_input("\n%s (y/n): " % pick_prompt).lower() == "y":
+    merged_refs = merged_refs + [cherry_pick(pr_num, merge_hash, latest_branch)]
+
+if JIRA_IMPORTED:
+    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(title, merged_refs, jira_comment)
+else:
+    print "Could not find jira-python library. Run 'sudo pip install jira-python' to install."
+    print "Exiting without trying to close the associated JIRA."


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