def GetCommitPosition(git_revision, cwd=None):
"""Finds git commit postion for the given git hash.
This function executes "git footer --position-num <git hash>" command to get
commit position the given revision.
Args:
git_revision: The git SHA1 to use.
cwd: Working directory to run the command from.
Returns:
Git commit position as integer or None.
"""
# Some of the respositories are pure git based, unlike other repositories
# they doesn't have commit position. e.g., skia, angle.
no_commit_position_repos = ['angle', 'skia']
if cwd and any(repo in cwd for repo in no_commit_position_repos):
return None
cmd = ['footers', '--position-num', git_revision]
output = bisect_utils.CheckRunGit(cmd, cwd)
commit_position = output.strip()
if bisect_utils.IsStringInt(commit_position):
return int(commit_position)
return None
def QueryRevisionInfo(revision, cwd=None):
"""Gathers information on a particular revision, such as author's name,
email, subject, and date.
Args:
revision: Revision you want to gather information on; a git commit hash.
Returns:
A dict in the following format:
{
'author': %s,
'email': %s,
'date': %s,
'subject': %s,
'body': %s,
}
"""
commit_info = {}
formats = ['%aN', '%aE', '%s', '%cD', '%b']
targets = ['author', 'email', 'subject', 'date', 'body']
for i in xrange(len(formats)):
cmd = ['log', '--format=%s' % formats[i], '-1', revision]
output = bisect_utils.CheckRunGit(cmd, cwd=cwd)
commit_info[targets[i]] = output.rstrip()
return commit_info
def GetRevisionList(self,
revision_range_end,
revision_range_start,
cwd=None):
"""Retrieves a list of revisions between |revision_range_start| and
|revision_range_end|.
Args:
revision_range_end: The SHA1 for the end of the range.
revision_range_start: The SHA1 for the beginning of the range.
Returns:
A list of the revisions between |revision_range_start| and
|revision_range_end| (inclusive).
"""
revision_range = '%s..%s' % (revision_range_start, revision_range_end)
cmd = [
'log', '--format=%H', '-10000', '--first-parent', revision_range
]
log_output = bisect_utils.CheckRunGit(cmd, cwd=cwd)
revision_hash_list = log_output.split()
revision_hash_list.append(revision_range_start)
return revision_hash_list
def ResolveToRevision(revision_to_check,
depot,
depot_deps_dict,
search,
cwd=None):
"""Tries to resolve an SVN revision or commit position to a git SHA1.
Args:
revision_to_check: The user supplied revision string that may need to be
resolved to a git commit hash. This may be an SVN revision, git commit
position, or a git commit hash.
depot: The depot (dependency repository) that |revision_to_check| is from.
depot_deps_dict: A dictionary with information about different depots.
search: How many revisions forward or backward to search. If the value is
negative, the function will search backwards chronologically, otherwise
it will search forward.
Returns:
A string containing a git SHA1 hash, otherwise None.
"""
# Android-chrome is git only, so no need to resolve this to anything else.
if depot == 'android-chrome':
return revision_to_check
# If the given revision can't be parsed as an integer, then it may already
# be a git commit hash.
if not bisect_utils.IsStringInt(revision_to_check):
return revision_to_check
depot_svn = 'svn://svn.chromium.org/chrome/trunk/src'
if depot != 'chromium':
depot_svn = depot_deps_dict[depot]['svn']
svn_revision = int(revision_to_check)
git_revision = None
if search > 0:
search_range = xrange(svn_revision, svn_revision + search, 1)
else:
search_range = xrange(svn_revision, svn_revision + search, -1)
for i in search_range:
# NOTE: Checking for the git-svn-id footer is for backwards compatibility.
# When we can assume that all the revisions we care about are from after
# git commit positions started getting added, we don't need to check this.
svn_pattern = 'git-svn-id: %s@%d' % (depot_svn, i)
commit_position_pattern = '^Cr-Commit-Position: .*@{#%d}' % i
cmd = [
'log', '--format=%H', '-1', '--grep', svn_pattern, '--grep',
commit_position_pattern, 'origin/master'
]
log_output = bisect_utils.CheckRunGit(cmd, cwd=cwd)
log_output = log_output.strip()
if log_output:
git_revision = log_output
break
return git_revision
def IsInProperBranch(self):
"""Confirms they're in the master branch for performing the bisection.
This is needed or gclient will fail to sync properly.
Returns:
True if the current branch on src is 'master'
"""
cmd = ['rev-parse', '--abbrev-ref', 'HEAD']
log_output = bisect_utils.CheckRunGit(cmd)
log_output = log_output.strip()
return log_output == "master"
def _AbortIfThereAreStagedChanges():
"""Exits the test prematurely if there are staged changes."""
# The output of "git status --short" will be an empty string if there are
# no staged changes in the current branch. Untracked files are ignored
# because when running the presubmit on the trybot there are sometimes
# untracked changes to the run-perf-test.cfg and bisect.cfg files.
status_output = bisect_utils.CheckRunGit(
['status', '--short', '--untracked-files=no'])
if status_output:
print 'There are un-committed changes in the current branch.'
print 'Aborting the tests to avoid destroying local changes. Changes:'
print status_output
sys.exit(1)
def QueryFileRevisionHistory(self, filename, revision_start, revision_end):
"""Returns a list of commits that modified this file.
Args:
filename: Name of file.
revision_start: Start of revision range.
revision_end: End of revision range.
Returns:
Returns a list of commits that touched this file.
"""
cmd = [
'log', '--format=%H',
'%s~1..%s' % (revision_start, revision_end), '--', filename
]
output = bisect_utils.CheckRunGit(cmd)
return [o for o in output.split('\n') if o]
def GetRevisionList(end_revision_hash, start_revision_hash, cwd=None):
"""Retrieves a list of git commit hashes in a range.
Args:
end_revision_hash: The SHA1 for the end of the range, inclusive.
start_revision_hash: The SHA1 for the beginning of the range, inclusive.
Returns:
A list of the git commit hashes in the range, in reverse time order --
that is, starting with |end_revision_hash|.
"""
revision_range = '%s..%s' % (start_revision_hash, end_revision_hash)
cmd = ['log', '--format=%H', '-10000', '--first-parent', revision_range]
log_output = bisect_utils.CheckRunGit(cmd, cwd=cwd)
revision_hash_list = log_output.split()
revision_hash_list.append(start_revision_hash)
return revision_hash_list
def GetCommitPosition(self, git_revision, cwd=None):
"""Finds git commit postion for the given git hash.
This function executes "git footer --position-num <git hash>" command to get
commit position the given revision.
Args:
git_revision: The git SHA1 to use.
cwd: Working directory to run the command from.
Returns:
Git commit position as integer or None.
"""
cmd = ['footers', '--position-num', git_revision]
output = bisect_utils.CheckRunGit(cmd, cwd)
commit_position = output.strip()
if bisect_utils.IsStringInt(commit_position):
return int(commit_position)
return None
def GetCurrentRevision(cwd=None):
"""Gets current revision of the given repository."""
return bisect_utils.CheckRunGit(['rev-parse', 'HEAD'], cwd=cwd).strip()
def GetCommitTime(git_revision, cwd=None):
"""Returns commit time for the given revision in UNIX timestamp."""
cmd = ['log', '--format=%ct', '-1', git_revision]
output = bisect_utils.CheckRunGit(cmd, cwd=cwd)
return int(output)
def IsInProperBranch():
"""Checks whether the current branch is "master"."""
cmd = ['rev-parse', '--abbrev-ref', 'HEAD']
log_output = bisect_utils.CheckRunGit(cmd)
log_output = log_output.strip()
return log_output == 'master'
def ResolveToRevision(self,
revision_to_check,
depot,
depot_deps_dict,
search,
cwd=None):
"""Tries to resolve an SVN revision or commit position to a git SHA1.
Args:
revision_to_check: The user supplied revision string that may need to be
resolved to a git SHA1.
depot: The depot the revision_to_check is from.
depot_deps_dict: A dictionary with information about different depots.
search: The number of changelists to try if the first fails to resolve
to a git hash. If the value is negative, the function will search
backwards chronologically, otherwise it will search forward.
Returns:
A string containing a git SHA1 hash, otherwise None.
"""
# Android-chrome is git only, so no need to resolve this to anything else.
if depot == 'android-chrome':
return revision_to_check
if depot != 'cros':
if not bisect_utils.IsStringInt(revision_to_check):
return revision_to_check
depot_svn = 'svn://svn.chromium.org/chrome/trunk/src'
if depot != 'chromium':
depot_svn = depot_deps_dict[depot]['svn']
svn_revision = int(revision_to_check)
git_revision = None
if search > 0:
search_range = xrange(svn_revision, svn_revision + search, 1)
else:
search_range = xrange(svn_revision, svn_revision + search, -1)
for i in search_range:
svn_pattern = 'git-svn-id: %s@%d' % (depot_svn, i)
commit_position_pattern = '^Cr-Commit-Position: .*@{#%d}' % i
cmd = [
'log', '--format=%H', '-1', '--grep', svn_pattern,
'--grep', commit_position_pattern, 'origin/master'
]
(log_output, return_code) = bisect_utils.RunGit(cmd, cwd=cwd)
assert not return_code, 'An error occurred while running'\
' "git %s"' % ' '.join(cmd)
if not return_code:
log_output = log_output.strip()
if log_output:
git_revision = log_output
break
return git_revision
else:
if bisect_utils.IsStringInt(revision_to_check):
return int(revision_to_check)
else:
cwd = os.getcwd()
os.chdir(
os.path.join(os.getcwd(), 'src', 'third_party',
'chromiumos-overlay'))
pattern = CROS_VERSION_PATTERN % revision_to_check
cmd = ['log', '--format=%ct', '-1', '--grep', pattern]
git_revision = None
log_output = bisect_utils.CheckRunGit(cmd, cwd=cwd)
if log_output:
git_revision = log_output
git_revision = int(log_output.strip())
os.chdir(cwd)
return git_revision
