def ParseChangelogFromJSON(self, range_start, range_end, changelog_url,
revision_url, revision_map, file_to_revision_map):
"""Parses changelog by going over the JSON file.
Args:
range_start: Starting range of the regression.
range_end: Ending range of the regression.
changelog_url: The url to retrieve changelog from.
revision_url: The url to retrieve individual revision from.
revision_map: A map from a git hash number to its revision information.
file_to_revision_map: A map from file to a git hash in which it occurs.
"""
# Compute URLs from given range, and retrieves changelog. Stop if it fails.
changelog_url %= (range_start, range_end)
json_url = changelog_url + '?format=json'
response = crash_utils.GetDataFromURL(json_url)
if not response:
return
# Parse changelog from the returned object. The returned string should
# start with ")}]'\n", so start from the 6th character.
revisions = crash_utils.LoadJSON(response[5:])
if not revisions:
return
# Parse individual revision in the log.
for revision in revisions['log']:
githash = revision['commit']
self.ParseRevision(revision_url, githash, revision_map,
file_to_revision_map)
# Parse the revision with range_start, because googlesource ignores
# that one.
self.ParseRevision(revision_url, range_start, revision_map,
file_to_revision_map)
def ParseMessage(self, message, codereview_api_url):
"""Parses the message.
It checks the message to extract the code review website and list of
reviewers, and it also checks if the CL is a revert of another CL.
Args:
message: The message to parse.
codereview_api_url: URL to retrieve codereview data from.
"""
for line in message.splitlines():
line = line.strip()
review_url_line_match = REVIEW_URL_PATTERN.match(line)
# Check if the line has the code review information.
if review_url_line_match:
# Get review number for the code review site from the line.
issue_number = review_url_line_match.group(2)
# Get JSON from the code review site, ignore the line if it fails.
url = codereview_api_url % issue_number
json_string = crash_utils.GetDataFromURL(url)
if not json_string:
logging.warning(
'Failed to retrieve code review information from %s',
url)
continue
# Load the JSON from the string, and get the list of reviewers.
code_review = crash_utils.LoadJSON(json_string)
if code_review:
self.reviewers = code_review['reviewers']
# Check if this CL is a revert of other CL.
if line.lower().startswith('revert'):
self.is_reverted = True
# Check if the line says what CL this CL is a revert of.
revert = self.REVERT_PATTERN.match(line)
if revert:
self.revert_of = revert.group(2)
return
def ParseRevision(self, revision_url, githash, revision_map,
file_to_revision_map):
# Retrieve data from the URL, return if it fails.
url = revision_url % githash
response = crash_utils.GetDataFromURL(url + '?format=json')
if not response:
return
# Load JSON object from the string. If it fails, terminate the function.
json_revision = crash_utils.LoadJSON(response[5:])
if not json_revision:
return
# Create a map representing object and get githash from the JSON object.
revision = {}
githash = json_revision['commit']
# Set author, message and URL of this CL.
revision['author'] = json_revision['author']['name']
revision['time'] = json_revision['author']['time']
revision['message'] = json_revision['message']
revision['url'] = url
# Iterate through the changed files.
for diff in json_revision['tree_diff']:
file_path = diff['new_path']
file_change_type = diff['type']
# Normalize file action so that it fits with svn_repository_parser.
file_change_type = _ConvertToFileChangeType(file_change_type)
# Add the file to the map.
if file_path not in file_to_revision_map:
file_to_revision_map[file_path] = []
file_to_revision_map[file_path].append((githash, file_change_type))
# Add this CL to the map.
revision_map[githash] = revision
return
def ParseBlameInfo(self, component, file_path, line, revision):
base_url = self.component_to_url_map[component]['repository']
# Retrieve blame JSON file from googlesource. If it fails, return None.
url_part = self.url_parts_map['blame_url'] % (revision, file_path)
blame_url = base_url + url_part
json_string = crash_utils.GetDataFromURL(blame_url)
if not json_string:
return
# Parse JSON object from the string. The returned string should
# start with ")}]'\n", so start from the 6th character.
annotation = crash_utils.LoadJSON(json_string[5:])
if not annotation:
return
# Go through the regions, which is a list of consecutive lines with same
# author/revision.
for blame_line in annotation['regions']:
start = blame_line['start']
count = blame_line['count']
# For each region, check if the line we want the blame info of is in this
# region.
if start <= line and line <= start + count - 1:
# If we are in the right region, get the information from the line.
revision = blame_line['commit']
author = blame_line['author']['name']
revision_url_parts = self.url_parts_map[
'revision_url'] % revision
revision_url = base_url + revision_url_parts
# TODO(jeun): Add a way to get content from JSON object.
content = None
(revision_info,
_) = self.ParseChangelog(component, revision, revision)
message = revision_info[revision]['message']
return (content, revision, author, revision_url, message)
# Return none if the region does not exist.
return None
