forked from OSchip/llvm-project
681 lines
25 KiB
Python
681 lines
25 KiB
Python
#!/usr/bin/env python
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from __future__ import print_function
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import argparse
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import email.mime.multipart
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import email.mime.text
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import logging
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import os.path
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import pickle
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import re
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import smtplib
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import subprocess
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import sys
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from datetime import datetime, timedelta
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from phabricator import Phabricator
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# Setting up a virtualenv to run this script can be done by running the
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# following commands:
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# $ virtualenv venv
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# $ . ./venv/bin/activate
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# $ pip install Phabricator
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GIT_REPO_METADATA = (("llvm-monorepo", "https://github.com/llvm/llvm-project"),
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)
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# The below PhabXXX classes represent objects as modelled by Phabricator.
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# The classes can be serialized to disk, to try and make sure that we don't
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# needlessly have to re-fetch lots of data from Phabricator, as that would
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# make this script unusably slow.
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class PhabObject:
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OBJECT_KIND = None
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def __init__(self, id):
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self.id = id
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class PhabObjectCache:
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def __init__(self, PhabObjectClass):
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self.PhabObjectClass = PhabObjectClass
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self.most_recent_info = None
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self.oldest_info = None
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self.id2PhabObjects = {}
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def get_name(self):
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return self.PhabObjectClass.OBJECT_KIND + "sCache"
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def get(self, id):
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if id not in self.id2PhabObjects:
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self.id2PhabObjects[id] = self.PhabObjectClass(id)
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return self.id2PhabObjects[id]
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def get_ids_in_cache(self):
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return list(self.id2PhabObjects.keys())
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def get_objects(self):
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return list(self.id2PhabObjects.values())
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DEFAULT_DIRECTORY = "PhabObjectCache"
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def _get_pickle_name(self, directory):
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file_name = "Phab" + self.PhabObjectClass.OBJECT_KIND + "s.pickle"
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return os.path.join(directory, file_name)
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def populate_cache_from_disk(self, directory=DEFAULT_DIRECTORY):
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"""
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FIXME: consider if serializing to JSON would bring interoperability
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advantages over serializing to pickle.
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"""
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try:
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f = open(self._get_pickle_name(directory), "rb")
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except IOError as err:
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print("Could not find cache. Error message: {0}. Continuing..."
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.format(err))
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else:
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with f:
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try:
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d = pickle.load(f)
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self.__dict__.update(d)
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except EOFError as err:
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print("Cache seems to be corrupt. " +
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"Not using cache. Error message: {0}".format(err))
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def write_cache_to_disk(self, directory=DEFAULT_DIRECTORY):
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if not os.path.exists(directory):
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os.makedirs(directory)
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with open(self._get_pickle_name(directory), "wb") as f:
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pickle.dump(self.__dict__, f)
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print("wrote cache to disk, most_recent_info= {0}".format(
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datetime.fromtimestamp(self.most_recent_info)
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if self.most_recent_info is not None else None))
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class PhabReview(PhabObject):
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OBJECT_KIND = "Review"
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def __init__(self, id):
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PhabObject.__init__(self, id)
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def update(self, title, dateCreated, dateModified, author):
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self.title = title
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self.dateCreated = dateCreated
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self.dateModified = dateModified
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self.author = author
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def setPhabDiffs(self, phabDiffs):
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self.phabDiffs = phabDiffs
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class PhabUser(PhabObject):
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OBJECT_KIND = "User"
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def __init__(self, id):
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PhabObject.__init__(self, id)
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def update(self, phid, realName):
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self.phid = phid
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self.realName = realName
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class PhabHunk:
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def __init__(self, rest_api_hunk):
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self.oldOffset = int(rest_api_hunk["oldOffset"])
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self.oldLength = int(rest_api_hunk["oldLength"])
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# self.actual_lines_changed_offset will contain the offsets of the
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# lines that were changed in this hunk.
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self.actual_lines_changed_offset = []
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offset = self.oldOffset
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inHunk = False
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hunkStart = -1
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contextLines = 3
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for line in rest_api_hunk["corpus"].split("\n"):
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if line.startswith("+"):
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# line is a new line that got introduced in this patch.
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# Do not record it as a changed line.
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if inHunk is False:
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inHunk = True
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hunkStart = max(self.oldOffset, offset - contextLines)
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continue
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if line.startswith("-"):
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# line was changed or removed from the older version of the
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# code. Record it as a changed line.
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if inHunk is False:
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inHunk = True
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hunkStart = max(self.oldOffset, offset - contextLines)
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offset += 1
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continue
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# line is a context line.
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if inHunk is True:
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inHunk = False
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hunkEnd = offset + contextLines
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self.actual_lines_changed_offset.append((hunkStart, hunkEnd))
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offset += 1
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if inHunk is True:
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hunkEnd = offset + contextLines
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self.actual_lines_changed_offset.append((hunkStart, hunkEnd))
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# The above algorithm could result in adjacent or overlapping ranges
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# being recorded into self.actual_lines_changed_offset.
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# Merge the adjacent and overlapping ranges in there:
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t = []
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lastRange = None
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for start, end in self.actual_lines_changed_offset + \
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[(sys.maxsize, sys.maxsize)]:
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if lastRange is None:
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lastRange = (start, end)
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else:
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if lastRange[1] >= start:
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lastRange = (lastRange[0], end)
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else:
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t.append(lastRange)
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lastRange = (start, end)
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self.actual_lines_changed_offset = t
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class PhabChange:
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def __init__(self, rest_api_change):
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self.oldPath = rest_api_change["oldPath"]
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self.hunks = [PhabHunk(h) for h in rest_api_change["hunks"]]
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class PhabDiff(PhabObject):
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OBJECT_KIND = "Diff"
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def __init__(self, id):
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PhabObject.__init__(self, id)
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def update(self, rest_api_results):
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self.revisionID = rest_api_results["revisionID"]
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self.dateModified = int(rest_api_results["dateModified"])
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self.dateCreated = int(rest_api_results["dateCreated"])
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self.changes = [PhabChange(c) for c in rest_api_results["changes"]]
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class ReviewsCache(PhabObjectCache):
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def __init__(self):
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PhabObjectCache.__init__(self, PhabReview)
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class UsersCache(PhabObjectCache):
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def __init__(self):
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PhabObjectCache.__init__(self, PhabUser)
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reviews_cache = ReviewsCache()
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users_cache = UsersCache()
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def init_phab_connection():
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phab = Phabricator()
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phab.update_interfaces()
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return phab
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def update_cached_info(phab, cache, phab_query, order, record_results,
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max_nr_entries_per_fetch, max_nr_days_to_cache):
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q = phab
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LIMIT = max_nr_entries_per_fetch
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for query_step in phab_query:
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q = getattr(q, query_step)
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results = q(order=order, limit=LIMIT)
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most_recent_info, oldest_info = record_results(cache, results, phab)
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oldest_info_to_fetch = datetime.fromtimestamp(most_recent_info) - \
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timedelta(days=max_nr_days_to_cache)
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most_recent_info_overall = most_recent_info
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cache.write_cache_to_disk()
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after = results["cursor"]["after"]
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print("after: {0!r}".format(after))
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print("most_recent_info: {0}".format(
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datetime.fromtimestamp(most_recent_info)))
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while (after is not None
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and datetime.fromtimestamp(oldest_info) > oldest_info_to_fetch):
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need_more_older_data = \
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(cache.oldest_info is None or
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datetime.fromtimestamp(cache.oldest_info) > oldest_info_to_fetch)
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print(("need_more_older_data={0} cache.oldest_info={1} " +
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"oldest_info_to_fetch={2}").format(
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need_more_older_data,
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datetime.fromtimestamp(cache.oldest_info)
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if cache.oldest_info is not None else None,
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oldest_info_to_fetch))
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need_more_newer_data = \
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(cache.most_recent_info is None or
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cache.most_recent_info < most_recent_info)
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print(("need_more_newer_data={0} cache.most_recent_info={1} " +
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"most_recent_info={2}")
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.format(need_more_newer_data, cache.most_recent_info,
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most_recent_info))
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if not need_more_older_data and not need_more_newer_data:
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break
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results = q(order=order, after=after, limit=LIMIT)
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most_recent_info, oldest_info = record_results(cache, results, phab)
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after = results["cursor"]["after"]
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print("after: {0!r}".format(after))
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print("most_recent_info: {0}".format(
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datetime.fromtimestamp(most_recent_info)))
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cache.write_cache_to_disk()
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cache.most_recent_info = most_recent_info_overall
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if after is None:
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# We did fetch all records. Mark the cache to contain all info since
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# the start of time.
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oldest_info = 0
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cache.oldest_info = oldest_info
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cache.write_cache_to_disk()
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def record_reviews(cache, reviews, phab):
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most_recent_info = None
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oldest_info = None
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for reviewInfo in reviews["data"]:
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if reviewInfo["type"] != "DREV":
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continue
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id = reviewInfo["id"]
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# phid = reviewInfo["phid"]
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dateModified = int(reviewInfo["fields"]["dateModified"])
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dateCreated = int(reviewInfo["fields"]["dateCreated"])
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title = reviewInfo["fields"]["title"]
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author = reviewInfo["fields"]["authorPHID"]
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phabReview = cache.get(id)
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if "dateModified" not in phabReview.__dict__ or \
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dateModified > phabReview.dateModified:
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diff_results = phab.differential.querydiffs(revisionIDs=[id])
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diff_ids = sorted(diff_results.keys())
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phabDiffs = []
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for diff_id in diff_ids:
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diffInfo = diff_results[diff_id]
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d = PhabDiff(diff_id)
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d.update(diffInfo)
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phabDiffs.append(d)
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phabReview.update(title, dateCreated, dateModified, author)
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phabReview.setPhabDiffs(phabDiffs)
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print("Updated D{0} modified on {1} ({2} diffs)".format(
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id, datetime.fromtimestamp(dateModified), len(phabDiffs)))
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if most_recent_info is None:
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most_recent_info = dateModified
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elif most_recent_info < dateModified:
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most_recent_info = dateModified
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if oldest_info is None:
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oldest_info = dateModified
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elif oldest_info > dateModified:
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oldest_info = dateModified
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return most_recent_info, oldest_info
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def record_users(cache, users, phab):
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most_recent_info = None
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oldest_info = None
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for info in users["data"]:
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if info["type"] != "USER":
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continue
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id = info["id"]
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phid = info["phid"]
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dateModified = int(info["fields"]["dateModified"])
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# dateCreated = int(info["fields"]["dateCreated"])
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realName = info["fields"]["realName"]
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phabUser = cache.get(id)
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phabUser.update(phid, realName)
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if most_recent_info is None:
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most_recent_info = dateModified
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elif most_recent_info < dateModified:
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most_recent_info = dateModified
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if oldest_info is None:
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oldest_info = dateModified
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elif oldest_info > dateModified:
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oldest_info = dateModified
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return most_recent_info, oldest_info
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PHABCACHESINFO = ((reviews_cache, ("differential", "revision", "search"),
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"updated", record_reviews, 5, 7),
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(users_cache, ("user", "search"), "newest", record_users,
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100, 1000))
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def load_cache():
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for cache, phab_query, order, record_results, _, _ in PHABCACHESINFO:
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cache.populate_cache_from_disk()
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print("Loaded {0} nr entries: {1}".format(
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cache.get_name(), len(cache.get_ids_in_cache())))
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print("Loaded {0} has most recent info: {1}".format(
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cache.get_name(),
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datetime.fromtimestamp(cache.most_recent_info)
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if cache.most_recent_info is not None else None))
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def update_cache(phab):
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load_cache()
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for cache, phab_query, order, record_results, max_nr_entries_per_fetch, \
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max_nr_days_to_cache in PHABCACHESINFO:
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update_cached_info(phab, cache, phab_query, order, record_results,
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max_nr_entries_per_fetch, max_nr_days_to_cache)
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ids_in_cache = cache.get_ids_in_cache()
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print("{0} objects in {1}".format(len(ids_in_cache), cache.get_name()))
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cache.write_cache_to_disk()
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def get_most_recent_reviews(days):
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newest_reviews = sorted(
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reviews_cache.get_objects(), key=lambda r: -r.dateModified)
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if len(newest_reviews) == 0:
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return newest_reviews
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most_recent_review_time = \
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datetime.fromtimestamp(newest_reviews[0].dateModified)
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cut_off_date = most_recent_review_time - timedelta(days=days)
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result = []
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for review in newest_reviews:
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if datetime.fromtimestamp(review.dateModified) < cut_off_date:
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return result
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result.append(review)
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return result
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# All of the above code is about fetching data from Phabricator and caching it
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# on local disk. The below code contains the actual "business logic" for this
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# script.
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_userphid2realname = None
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def get_real_name_from_author(user_phid):
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global _userphid2realname
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if _userphid2realname is None:
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_userphid2realname = {}
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for user in users_cache.get_objects():
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_userphid2realname[user.phid] = user.realName
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return _userphid2realname.get(user_phid, "unknown")
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def print_most_recent_reviews(phab, days, filter_reviewers):
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msgs = []
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def add_msg(msg):
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msgs.append(msg)
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print(msg.encode('utf-8'))
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newest_reviews = get_most_recent_reviews(days)
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add_msg(u"These are the reviews that look interesting to be reviewed. " +
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u"The report below has 2 sections. The first " +
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u"section is organized per review; the second section is organized "
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+ u"per potential reviewer.\n")
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oldest_review = newest_reviews[-1] if len(newest_reviews) > 0 else None
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oldest_datetime = \
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datetime.fromtimestamp(oldest_review.dateModified) \
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if oldest_review else None
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add_msg((u"The report below is based on analyzing the reviews that got " +
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u"touched in the past {0} days (since {1}). " +
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u"The script found {2} such reviews.\n").format(
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days, oldest_datetime, len(newest_reviews)))
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reviewer2reviews_and_scores = {}
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for i, review in enumerate(newest_reviews):
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matched_reviewers = find_reviewers_for_review(review)
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matched_reviewers = filter_reviewers(matched_reviewers)
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if len(matched_reviewers) == 0:
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continue
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add_msg((u"{0:>3}. https://reviews.llvm.org/D{1} by {2}\n {3}\n" +
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u" Last updated on {4}").format(
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i, review.id,
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get_real_name_from_author(review.author), review.title,
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datetime.fromtimestamp(review.dateModified)))
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for reviewer, scores in matched_reviewers:
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add_msg(u" potential reviewer {0}, score {1}".format(
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reviewer,
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"(" + "/".join(["{0:.1f}%".format(s) for s in scores]) + ")"))
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if reviewer not in reviewer2reviews_and_scores:
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reviewer2reviews_and_scores[reviewer] = []
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reviewer2reviews_and_scores[reviewer].append((review, scores))
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# Print out a summary per reviewer.
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for reviewer in sorted(reviewer2reviews_and_scores.keys()):
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reviews_and_scores = reviewer2reviews_and_scores[reviewer]
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reviews_and_scores.sort(key=lambda rs: rs[1], reverse=True)
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add_msg(u"\n\nSUMMARY FOR {0} (found {1} reviews):".format(
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reviewer, len(reviews_and_scores)))
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for review, scores in reviews_and_scores:
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add_msg(u"[{0}] https://reviews.llvm.org/D{1} '{2}' by {3}".format(
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"/".join(["{0:.1f}%".format(s) for s in scores]), review.id,
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review.title, get_real_name_from_author(review.author)))
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return "\n".join(msgs)
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def get_git_cmd_output(cmd):
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output = None
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try:
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logging.debug(cmd)
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output = subprocess.check_output(
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cmd, shell=True, stderr=subprocess.STDOUT)
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except subprocess.CalledProcessError as e:
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logging.debug(str(e))
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if output is None:
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return None
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return output.decode("utf-8", errors='ignore')
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reAuthorMail = re.compile("^author-mail <([^>]*)>.*$")
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def parse_blame_output_line_porcelain(blame_output_lines):
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email2nr_occurences = {}
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if blame_output_lines is None:
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return email2nr_occurences
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for line in blame_output_lines:
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m = reAuthorMail.match(line)
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if m:
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author_email_address = m.group(1)
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if author_email_address not in email2nr_occurences:
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email2nr_occurences[author_email_address] = 1
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else:
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email2nr_occurences[author_email_address] += 1
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return email2nr_occurences
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class BlameOutputCache:
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def __init__(self):
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self.cache = {}
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def _populate_cache_for(self, cache_key):
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assert cache_key not in self.cache
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git_repo, base_revision, path = cache_key
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cmd = ("git -C {0} blame --encoding=utf-8 --date iso -f -e -w " +
|
|
"--line-porcelain {1} -- {2}").format(git_repo, base_revision,
|
|
path)
|
|
blame_output = get_git_cmd_output(cmd)
|
|
self.cache[cache_key] = \
|
|
blame_output.split('\n') if blame_output is not None else None
|
|
# FIXME: the blame cache could probably be made more effective still if
|
|
# instead of storing the requested base_revision in the cache, the last
|
|
# revision before the base revision this file/path got changed in gets
|
|
# stored. That way multiple project revisions for which this specific
|
|
# file/patch hasn't changed would get cache hits (instead of misses in
|
|
# the current implementation).
|
|
|
|
def get_blame_output_for(self, git_repo, base_revision, path, start_line=-1,
|
|
end_line=-1):
|
|
cache_key = (git_repo, base_revision, path)
|
|
if cache_key not in self.cache:
|
|
self._populate_cache_for(cache_key)
|
|
assert cache_key in self.cache
|
|
all_blame_lines = self.cache[cache_key]
|
|
if all_blame_lines is None:
|
|
return None
|
|
if start_line == -1 and end_line == -1:
|
|
return all_blame_lines
|
|
assert start_line >= 0
|
|
assert end_line >= 0
|
|
assert end_line <= len(all_blame_lines)
|
|
assert start_line <= len(all_blame_lines)
|
|
assert start_line <= end_line
|
|
return all_blame_lines[start_line:end_line]
|
|
|
|
def get_parsed_git_blame_for(self, git_repo, base_revision, path,
|
|
start_line=-1, end_line=-1):
|
|
return parse_blame_output_line_porcelain(
|
|
self.get_blame_output_for(git_repo, base_revision, path, start_line,
|
|
end_line))
|
|
|
|
|
|
blameOutputCache = BlameOutputCache()
|
|
|
|
|
|
def find_reviewers_for_diff_heuristic(diff):
|
|
# Heuristic 1: assume good reviewers are the ones that touched the same
|
|
# lines before as this patch is touching.
|
|
# Heuristic 2: assume good reviewers are the ones that touched the same
|
|
# files before as this patch is touching.
|
|
reviewers2nr_lines_touched = {}
|
|
reviewers2nr_files_touched = {}
|
|
# Assume last revision before diff was modified is the revision the diff
|
|
# applies to.
|
|
assert len(GIT_REPO_METADATA) == 1
|
|
git_repo = os.path.join("git_repos", GIT_REPO_METADATA[0][0])
|
|
cmd = 'git -C {0} rev-list -n 1 --before="{1}" master'.format(
|
|
git_repo,
|
|
datetime.fromtimestamp(
|
|
diff.dateModified).strftime("%Y-%m-%d %H:%M:%s"))
|
|
base_revision = get_git_cmd_output(cmd).strip()
|
|
logging.debug("Base revision={0}".format(base_revision))
|
|
for change in diff.changes:
|
|
path = change.oldPath
|
|
# Compute heuristic 1: look at context of patch lines.
|
|
for hunk in change.hunks:
|
|
for start_line, end_line in hunk.actual_lines_changed_offset:
|
|
# Collect git blame results for authors in those ranges.
|
|
for reviewer, nr_occurences in \
|
|
blameOutputCache.get_parsed_git_blame_for(
|
|
git_repo, base_revision, path, start_line, end_line
|
|
).items():
|
|
if reviewer not in reviewers2nr_lines_touched:
|
|
reviewers2nr_lines_touched[reviewer] = 0
|
|
reviewers2nr_lines_touched[reviewer] += nr_occurences
|
|
# Compute heuristic 2: don't look at context, just at files touched.
|
|
# Collect git blame results for authors in those ranges.
|
|
for reviewer, nr_occurences in \
|
|
blameOutputCache.get_parsed_git_blame_for(
|
|
git_repo, base_revision, path).items():
|
|
if reviewer not in reviewers2nr_files_touched:
|
|
reviewers2nr_files_touched[reviewer] = 0
|
|
reviewers2nr_files_touched[reviewer] += 1
|
|
|
|
# Compute "match scores"
|
|
total_nr_lines = sum(reviewers2nr_lines_touched.values())
|
|
total_nr_files = len(diff.changes)
|
|
reviewers_matchscores = \
|
|
[(reviewer,
|
|
(reviewers2nr_lines_touched.get(reviewer, 0)*100.0/total_nr_lines
|
|
if total_nr_lines != 0 else 0,
|
|
reviewers2nr_files_touched[reviewer]*100.0/total_nr_files
|
|
if total_nr_files != 0 else 0))
|
|
for reviewer, nr_lines
|
|
in reviewers2nr_files_touched.items()]
|
|
reviewers_matchscores.sort(key=lambda i: i[1], reverse=True)
|
|
return reviewers_matchscores
|
|
|
|
|
|
def find_reviewers_for_review(review):
|
|
# Process the newest diff first.
|
|
diffs = sorted(
|
|
review.phabDiffs, key=lambda d: d.dateModified, reverse=True)
|
|
if len(diffs) == 0:
|
|
return
|
|
diff = diffs[0]
|
|
matched_reviewers = find_reviewers_for_diff_heuristic(diff)
|
|
# Show progress, as this is a slow operation:
|
|
sys.stdout.write('.')
|
|
sys.stdout.flush()
|
|
logging.debug(u"matched_reviewers: {0}".format(matched_reviewers))
|
|
return matched_reviewers
|
|
|
|
|
|
def update_git_repos():
|
|
git_repos_directory = "git_repos"
|
|
for name, url in GIT_REPO_METADATA:
|
|
dirname = os.path.join(git_repos_directory, name)
|
|
if not os.path.exists(dirname):
|
|
cmd = "git clone {0} {1}".format(url, dirname)
|
|
output = get_git_cmd_output(cmd)
|
|
cmd = "git -C {0} pull --rebase".format(dirname)
|
|
output = get_git_cmd_output(cmd)
|
|
|
|
|
|
def send_emails(email_addresses, sender, msg):
|
|
s = smtplib.SMTP()
|
|
s.connect()
|
|
for email_address in email_addresses:
|
|
email_msg = email.mime.multipart.MIMEMultipart()
|
|
email_msg['From'] = sender
|
|
email_msg['To'] = email_address
|
|
email_msg['Subject'] = 'LLVM patches you may be able to review.'
|
|
email_msg.attach(email.mime.text.MIMEText(msg.encode('utf-8'), 'plain'))
|
|
# python 3.x: s.send_message(email_msg)
|
|
s.sendmail(email_msg['From'], email_msg['To'], email_msg.as_string())
|
|
s.quit()
|
|
|
|
|
|
def filter_reviewers_to_report_for(people_to_look_for):
|
|
# The below is just an example filter, to only report potential reviews
|
|
# to do for the people that will receive the report email.
|
|
return lambda potential_reviewers: [r for r in potential_reviewers
|
|
if r[0] in people_to_look_for]
|
|
|
|
|
|
def main():
|
|
parser = argparse.ArgumentParser(
|
|
description='Match open reviews to potential reviewers.')
|
|
parser.add_argument(
|
|
'--no-update-cache',
|
|
dest='update_cache',
|
|
action='store_false',
|
|
default=True,
|
|
help='Do not update cached Phabricator objects')
|
|
parser.add_argument(
|
|
'--email-report',
|
|
dest='email_report',
|
|
nargs='*',
|
|
default="",
|
|
help="A email addresses to send the report to.")
|
|
parser.add_argument(
|
|
'--sender',
|
|
dest='sender',
|
|
default="",
|
|
help="The email address to use in 'From' on messages emailed out.")
|
|
parser.add_argument(
|
|
'--email-addresses',
|
|
dest='email_addresses',
|
|
nargs='*',
|
|
help="The email addresses (as known by LLVM git) of " +
|
|
"the people to look for reviews for.")
|
|
parser.add_argument('--verbose', '-v', action='count')
|
|
|
|
args = parser.parse_args()
|
|
|
|
if args.verbose >= 1:
|
|
logging.basicConfig(level=logging.DEBUG)
|
|
|
|
people_to_look_for = [e.decode('utf-8') for e in args.email_addresses]
|
|
logging.debug("Will look for reviews that following contributors could " +
|
|
"review: {}".format(people_to_look_for))
|
|
logging.debug("Will email a report to: {}".format(args.email_report))
|
|
|
|
phab = init_phab_connection()
|
|
|
|
if args.update_cache:
|
|
update_cache(phab)
|
|
|
|
load_cache()
|
|
update_git_repos()
|
|
msg = print_most_recent_reviews(
|
|
phab,
|
|
days=1,
|
|
filter_reviewers=filter_reviewers_to_report_for(people_to_look_for))
|
|
|
|
if args.email_report != []:
|
|
send_emails(args.email_report, args.sender, msg)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|