Add the trivial rebase auto-re-approve hook
Also create a contrib area for further contributions. Change-Id: Idf37ae6ac89193649653f030ca19d88626cfc454
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#!/usr/bin/env python2.6
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# Copyright (c) 2010, Code Aurora Forum. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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# # Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# # Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials provided
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# with the distribution.
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# # Neither the name of Code Aurora Forum, Inc. nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# This script is designed to detect when a patchset uploaded to Gerrit is
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# 'identical' (determined via git-patch-id) and reapply reviews onto the new
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# patchset from the previous patchset.
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# Get usage and help info by running: ./trivial_rebase.py --help
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# Documentation is available here: https://www.codeaurora.org/xwiki/bin/QAEP/Gerrit
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import json
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from optparse import OptionParser
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import subprocess
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from sys import exit
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class CheckCallError(OSError):
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"""CheckCall() returned non-0."""
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def __init__(self, command, cwd, retcode, stdout, stderr=None):
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OSError.__init__(self, command, cwd, retcode, stdout, stderr)
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self.command = command
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self.cwd = cwd
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self.retcode = retcode
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self.stdout = stdout
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self.stderr = stderr
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def CheckCall(command, cwd=None):
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"""Like subprocess.check_call() but returns stdout.
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Works on python 2.4
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"""
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try:
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process = subprocess.Popen(command, cwd=cwd, stdout=subprocess.PIPE)
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std_out, std_err = process.communicate()
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except OSError, e:
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raise CheckCallError(command, cwd, e.errno, None)
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if process.returncode:
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raise CheckCallError(command, cwd, process.returncode, std_out, std_err)
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return std_out, std_err
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def GsqlQuery(sql_query, server, port):
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"""Runs a gerrit gsql query and returns the result"""
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gsql_cmd = ['ssh', '-p', port, server, 'gerrit', 'gsql', '--format',
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'JSON', '-c', sql_query]
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try:
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(gsql_out, gsql_stderr) = CheckCall(gsql_cmd)
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except CheckCallError, e:
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print "return code is %s" % e.retcode
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print "stdout and stderr is\n%s%s" % (e.stdout, e.stderr)
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raise
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new_out = gsql_out.replace('}}\n', '}}\nsplit here\n')
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return new_out.split('split here\n')
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def FindPrevRev(changeId, patchset, server):
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"""Finds the revision of the previous patch set on the change"""
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sql_query = ("\"SELECT revision FROM patch_sets,changes WHERE "
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"patch_sets.change_id = changes.change_id AND "
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"patch_sets.patch_set_id = %s AND "
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"changes.change_key = \'%s\'\"" % ((patchset - 1), changeId))
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revisions = GsqlQuery(sql_query, server)
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json_dict = json.loads(revisions[0], strict=False)
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return json_dict["columns"]["revision"]
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def GetApprovals(changeId, patchset, server):
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"""Get all the approvals on a specific patch set
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Returns a list of approval dicts"""
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sql_query = ("\"SELECT value,account_id,category_id FROM patch_set_approvals "
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"WHERE change_id = (SELECT change_id FROM changes WHERE "
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"patch_set_id = %s AND change_key = \'%s\') AND value <> 0\""
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% ((patchset - 1), changeId))
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gsql_out = GsqlQuery(sql_query, server)
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approvals = []
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for json_str in gsql_out:
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dict = json.loads(json_str, strict=False)
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if dict["type"] == "row":
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approvals.append(dict["columns"])
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return approvals
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def GetEmailFromAcctId(account_id, server):
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"""Returns the preferred email address associated with the account_id"""
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sql_query = ("\"SELECT preferred_email FROM accounts WHERE account_id = %s\""
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% account_id)
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email_addr = GsqlQuery(sql_query, server)
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json_dict = json.loads(email_addr[0], strict=False)
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return json_dict["columns"]["preferred_email"]
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def GetPatchId(revision):
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git_show_cmd = ['git', 'show', revision]
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patch_id_cmd = ['git', 'patch-id']
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patch_id_process = subprocess.Popen(patch_id_cmd, stdout=subprocess.PIPE,
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stdin=subprocess.PIPE)
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git_show_process = subprocess.Popen(git_show_cmd, stdout=subprocess.PIPE)
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return patch_id_process.communicate(git_show_process.communicate()[0])[0]
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def SuExec(server, port, private_key, as_user, cmd):
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suexec_cmd = ['ssh', '-l', "Gerrit Code Review", '-p', port, server, '-i',
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private_key, 'suexec', '--as', as_user, '--', cmd]
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CheckCall(suexec_cmd)
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def DiffCommitMessages(commit1, commit2):
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log_cmd1 = ['git', 'log', '--pretty=format:"%an %ae%n%s%n%b"',
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commit1 + '^!']
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commit1_log = CheckCall(log_cmd1)
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log_cmd2 = ['git', 'log', '--pretty=format:"%an %ae%n%s%n%b"',
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commit2 + '^!']
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commit2_log = CheckCall(log_cmd2)
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if commit1_log != commit2_log:
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return True
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return False
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def Main():
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server = 'localhost'
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usage = "usage: %prog <required options> [--server-port=PORT]"
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parser = OptionParser(usage=usage)
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parser.add_option("--change", dest="changeId", help="Change identifier")
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parser.add_option("--project", help="Project path in Gerrit")
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parser.add_option("--commit", help="Git commit-ish for this patchset")
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parser.add_option("--patchset", type="int", help="The patchset number")
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parser.add_option("--private-key-path", dest="private_key_path",
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help="Full path to Gerrit SSH daemon's private host key")
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parser.add_option("--server-port", dest="port", default='29418',
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help="Port to connect to Gerrit's SSH daemon "
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"[default: %default]")
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(options, args) = parser.parse_args()
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if not options.changeId:
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parser.print_help()
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exit(0)
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if options.patchset == 1:
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# Nothing to detect on first patchset
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exit(0)
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prev_revision = None
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prev_revision = FindPrevRev(options.changeId, options.patchset, server)
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if not prev_revision:
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# Couldn't find a previous revision
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exit(0)
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prev_patch_id = GetPatchId(prev_revision)
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cur_patch_id = GetPatchId(options.commit)
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if cur_patch_id.split()[0] != prev_patch_id.split()[0]:
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# patch-ids don't match
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exit(0)
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# Patch ids match. This is a trivial rebase.
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# In addition to patch-id we should check if the commit message changed. Most
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# approvers would want to re-review changes when the commit message changes.
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changed = DiffCommitMessages(prev_revision, options.commit)
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if changed:
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# Insert a comment into the change letting the approvers know only the
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# commit message changed
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comment_msg = ("\'--message=New patchset patch-id matches previous patchset"
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", but commit message has changed.'")
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comment_cmd = ['ssh', '-p', options.port, server, 'gerrit', 'approve',
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'--project', options.project, comment_msg, options.commit]
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CheckCall(comment_cmd)
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exit(0)
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# Need to get all approvals on prior patch set, then suexec them onto
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# this patchset.
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approvals = GetApprovals(options.changeId, options.patchset, server)
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gerrit_approve_msg = ("\'Automatically re-added by Gerrit trivial rebase "
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"detection script.\'")
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for approval in approvals:
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# Note: Sites with different 'copy_min_score' values in the
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# approval_categories DB table might want different behavior here.
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# Additional categories should also be added if desired.
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if approval["category_id"] == "CRVW":
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approve_category = '--code-review'
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elif approval["category_id"] == "VRIF":
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# Don't re-add verifies
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#approve_category = '--verified'
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continue
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elif approval["category_id"] == "SUBM":
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# We don't care about previous submit attempts
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continue
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else:
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print "Unsupported category: %s" % approval
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exit(0)
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score = approval["value"]
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gerrit_approve_cmd = ['gerrit', 'approve', '--project', options.project,
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'--message', gerrit_approve_msg, approve_category,
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score, options.commit]
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email_addr = GetEmailFromAcctId(approval["account_id"], server)
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SuExec(server, options.port, options.private_key_path, email_addr,
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' '.join(gerrit_approve_cmd))
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exit(0)
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if __name__ == "__main__":
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Main()
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