sync: Allow -j to have a default in manifest

This permits manifest authors to suggest a number of parallel
fetch operations against a remote server. For example, Gerrit
Code Review servers support queuing of requests and processes
them in first-in, first-out order. Running concurrent fetches
can utilize multiple CPUs on the Gerrit server, but will also
decrease overall operation latency by having the request put
into the queue ready to execute as soon as a CPU is free.

Change-Id: I3d3904acb6f63516bae4b071c510ad57a2afab18
Signed-off-by: Shawn O. Pearce <sop@google.com>

command.py

@@ -74,7 +74,7 @@ class Command(object):
         project = all.get(arg)
 
         if not project:
-          path = os.path.abspath(arg)
+          path = os.path.abspath(arg).replace('\\', '/')
 
           if not by_path:
             by_path = dict()
@@ -82,13 +82,15 @@ class Command(object):
               by_path[p.worktree] = p
 
           if os.path.exists(path):
+            oldpath = None
             while path \
-              and path != '/' \
+              and path != oldpath \
               and path != self.manifest.topdir:
               try:
                 project = by_path[path]
                 break
               except KeyError:
+                oldpath = path
                 path = os.path.dirname(path)
           else:
             try:

docs/manifest-format.txt

@@ -25,7 +25,8 @@ following DTD:
                         default?,
                         manifest-server?,
                         remove-project*,
-                        project*)>
+                        project*,
+                        repo-hooks?)>
   
     <!ELEMENT notice (#PCDATA)>
   
@@ -37,6 +38,7 @@ following DTD:
     <!ELEMENT default (EMPTY)>
     <!ATTLIST default remote   IDREF #IMPLIED>
     <!ATTLIST default revision CDATA #IMPLIED>
+    <!ATTLIST default sync-j   CDATA #IMPLIED>
 
     <!ELEMENT manifest-server (EMPTY)>
     <!ATTLIST url              CDATA #REQUIRED>
@@ -49,6 +51,10 @@ following DTD:
   
     <!ELEMENT remove-project (EMPTY)>
     <!ATTLIST remove-project name  CDATA #REQUIRED>
+
+    <!ELEMENT repo-hooks (EMPTY)>
+    <!ATTLIST repo-hooks in-project CDATA #REQUIRED>
+    <!ATTLIST repo-hooks enabled-list CDATA #REQUIRED>
   ]>
 
 A description of the elements and their attributes follows.

error.py

@@ -75,3 +75,10 @@ class RepoChangedException(Exception):
   """
   def __init__(self, extra_args=[]):
     self.extra_args = extra_args
+
+class HookError(Exception):
+  """Thrown if a 'repo-hook' could not be run.
+
+  The common case is that the file wasn't present when we tried to run it.
+  """
+  pass

git_command.py

@@ -72,6 +72,8 @@ def terminate_ssh_clients():
       pass
   _ssh_clients = []
 
+_git_version = None
+
 class _GitCall(object):
   def version(self):
     p = GitCommand(None, ['--version'], capture_stdout=True)
@@ -79,6 +81,21 @@ class _GitCall(object):
       return p.stdout
     return None
 
+  def version_tuple(self):
+    global _git_version
+
+    if _git_version is None:
+      ver_str = git.version()
+      if ver_str.startswith('git version '):
+        _git_version = tuple(
+          map(lambda x: int(x),
+            ver_str[len('git version '):].strip().split('.')[0:3]
+          ))
+      else:
+        print >>sys.stderr, 'fatal: "%s" unsupported' % ver_str
+        sys.exit(1)
+    return _git_version
+
   def __getattr__(self, name):
     name = name.replace('_','-')
     def fun(*cmdv):
@@ -88,23 +105,9 @@ class _GitCall(object):
     return fun
 git = _GitCall()
 
-_git_version = None
-
 def git_require(min_version, fail=False):
-  global _git_version
-
-  if _git_version is None:
-    ver_str = git.version()
-    if ver_str.startswith('git version '):
-      _git_version = tuple(
-        map(lambda x: int(x),
-          ver_str[len('git version '):].strip().split('.')[0:3]
-        ))
-    else:
-      print >>sys.stderr, 'fatal: "%s" unsupported' % ver_str
-      sys.exit(1)
-
-  if min_version <= _git_version:
+  git_version = git.version_tuple()
+  if min_version <= git_version:
     return True
   if fail:
     need = '.'.join(map(lambda x: str(x), min_version))
@@ -112,6 +115,9 @@ def git_require(min_version, fail=False):
     sys.exit(1)
   return False
 
+def _setenv(env, name, value):
+  env[name] = value.encode()
+
 class GitCommand(object):
   def __init__(self,
                project,
@@ -124,7 +130,7 @@ class GitCommand(object):
                ssh_proxy = False,
                cwd = None,
                gitdir = None):
-    env = dict(os.environ)
+    env = os.environ.copy()
 
     for e in [REPO_TRACE,
               GIT_DIR,
@@ -137,10 +143,10 @@ class GitCommand(object):
         del env[e]
 
     if disable_editor:
-      env['GIT_EDITOR'] = ':'
+      _setenv(env, 'GIT_EDITOR', ':')
     if ssh_proxy:
-      env['REPO_SSH_SOCK'] = ssh_sock()
-      env['GIT_SSH'] = _ssh_proxy()
+      _setenv(env, 'REPO_SSH_SOCK', ssh_sock())
+      _setenv(env, 'GIT_SSH', _ssh_proxy())
 
     if project:
       if not cwd:
@@ -151,7 +157,7 @@ class GitCommand(object):
     command = [GIT]
     if bare:
       if gitdir:
-        env[GIT_DIR] = gitdir
+        _setenv(env, GIT_DIR, gitdir)
       cwd = None
     command.extend(cmdv)
 

git_config.py

@@ -23,6 +23,8 @@ try:
 except ImportError:
   import dummy_threading as _threading
 import time
+import urllib2
+
 from signal import SIGTERM
 from urllib2 import urlopen, HTTPError
 from error import GitError, UploadError
@@ -196,6 +198,15 @@ class GitConfig(object):
     except KeyError:
       return False
 
+  def UrlInsteadOf(self, url):
+    """Resolve any url.*.insteadof references.
+    """
+    for new_url in self.GetSubSections('url'):
+      old_url = self.GetString('url.%s.insteadof' % new_url)
+      if old_url is not None and url.startswith(old_url):
+        return new_url + url[len(old_url):]
+    return url
+
   @property
   def _sections(self):
     d = self._section_dict
@@ -563,23 +574,25 @@ class Remote(object):
         try:
           info = urlopen(u).read()
           if info == 'NOT_AVAILABLE':
-            raise UploadError('Upload over ssh unavailable')
+            raise UploadError('%s: SSH disabled' % self.review)
           if '<' in info:
             # Assume the server gave us some sort of HTML
             # response back, like maybe a login page.
             #
-            raise UploadError('Cannot read %s:\n%s' % (u, info))
+            raise UploadError('%s: Cannot parse response' % u)
 
           self._review_protocol = 'ssh'
           self._review_host = info.split(" ")[0]
           self._review_port = info.split(" ")[1]
+        except urllib2.URLError, e:
+          raise UploadError('%s: %s' % (self.review, e.reason[1]))
         except HTTPError, e:
           if e.code == 404:
             self._review_protocol = 'http-post'
             self._review_host = None
             self._review_port = None
           else:
-            raise UploadError('Cannot guess Gerrit version')
+            raise UploadError('Upload over ssh unavailable')
 
         REVIEW_CACHE[u] = (
           self._review_protocol,

main.py

@@ -22,12 +22,16 @@ if __name__ == '__main__':
     del sys.argv[-1]
 del magic
 
+import netrc
 import optparse
 import os
 import re
 import sys
+import time
+import urllib2
 
 from trace import SetTrace
+from git_command import git, GitCommand
 from git_config import init_ssh, close_ssh
 from command import InteractiveCommand
 from command import MirrorSafeCommand
@@ -53,6 +57,9 @@ global_options.add_option('--no-pager',
 global_options.add_option('--trace',
                           dest='trace', action='store_true',
                           help='trace git command execution')
+global_options.add_option('--time',
+                          dest='time', action='store_true',
+                          help='time repo command execution')
 global_options.add_option('--version',
                           dest='show_version', action='store_true',
                           help='display this version of repo')
@@ -61,6 +68,8 @@ class _Repo(object):
   def __init__(self, repodir):
     self.repodir = repodir
     self.commands = all_commands
+    # add 'branch' as an alias for 'branches'
+    all_commands['branch'] = all_commands['branches']
 
   def _Run(self, argv):
     name = None
@@ -120,7 +129,20 @@ class _Repo(object):
         RunPager(config)
 
     try:
-      cmd.Execute(copts, cargs)
+      start = time.time()
+      try:
+        cmd.Execute(copts, cargs)
+      finally:
+        elapsed = time.time() - start
+        hours, remainder = divmod(elapsed, 3600)
+        minutes, seconds = divmod(remainder, 60)
+        if gopts.time:
+          if hours == 0:
+            print >>sys.stderr, 'real\t%dm%.3fs' \
+              % (minutes, seconds)
+          else:
+            print >>sys.stderr, 'real\t%dh%dm%.3fs' \
+              % (hours, minutes, seconds)
     except ManifestInvalidRevisionError, e:
       print >>sys.stderr, 'error: %s' % str(e)
       sys.exit(1)
@@ -131,6 +153,9 @@ class _Repo(object):
         print >>sys.stderr, 'error: no project in current directory'
       sys.exit(1)
 
+def _MyRepoPath():
+  return os.path.dirname(__file__)
+
 def _MyWrapperPath():
   return os.path.join(os.path.dirname(__file__), 'repo')
 
@@ -197,6 +222,75 @@ def _PruneOptions(argv, opt):
       continue
     i += 1
 
+_user_agent = None
+
+def _UserAgent():
+  global _user_agent
+
+  if _user_agent is None:
+    py_version = sys.version_info
+
+    os_name = sys.platform
+    if os_name == 'linux2':
+      os_name = 'Linux'
+    elif os_name == 'win32':
+      os_name = 'Win32'
+    elif os_name == 'cygwin':
+      os_name = 'Cygwin'
+    elif os_name == 'darwin':
+      os_name = 'Darwin'
+
+    p = GitCommand(
+      None, ['describe', 'HEAD'],
+      cwd = _MyRepoPath(),
+      capture_stdout = True)
+    if p.Wait() == 0:
+      repo_version = p.stdout
+      if len(repo_version) > 0 and repo_version[-1] == '\n':
+        repo_version = repo_version[0:-1]
+      if len(repo_version) > 0 and repo_version[0] == 'v':
+        repo_version = repo_version[1:]
+    else:
+      repo_version = 'unknown'
+
+    _user_agent = 'git-repo/%s (%s) git/%s Python/%d.%d.%d' % (
+      repo_version,
+      os_name,
+      '.'.join(map(lambda d: str(d), git.version_tuple())),
+      py_version[0], py_version[1], py_version[2])
+  return _user_agent
+
+class _UserAgentHandler(urllib2.BaseHandler):
+  def http_request(self, req):
+    req.add_header('User-Agent', _UserAgent())
+    return req
+
+  def https_request(self, req):
+    req.add_header('User-Agent', _UserAgent())
+    return req
+
+def init_http():
+  handlers = [_UserAgentHandler()]
+
+  mgr = urllib2.HTTPPasswordMgrWithDefaultRealm()
+  try:
+    n = netrc.netrc()
+    for host in n.hosts:
+      p = n.hosts[host]
+      mgr.add_password(None, 'http://%s/'  % host, p[0], p[2])
+      mgr.add_password(None, 'https://%s/' % host, p[0], p[2])
+  except netrc.NetrcParseError:
+    pass
+  handlers.append(urllib2.HTTPBasicAuthHandler(mgr))
+
+  if 'http_proxy' in os.environ:
+    url = os.environ['http_proxy']
+    handlers.append(urllib2.ProxyHandler({'http': url, 'https': url}))
+  if 'REPO_CURL_VERBOSE' in os.environ:
+    handlers.append(urllib2.HTTPHandler(debuglevel=1))
+    handlers.append(urllib2.HTTPSHandler(debuglevel=1))
+  urllib2.install_opener(urllib2.build_opener(*handlers))
+
 def _Main(argv):
   opt = optparse.OptionParser(usage="repo wrapperinfo -- ...")
   opt.add_option("--repo-dir", dest="repodir",
@@ -215,6 +309,7 @@ def _Main(argv):
   try:
     try:
       init_ssh()
+      init_http()
       repo._Run(argv)
     finally:
       close_ssh()

manifest_xml.py

@@ -29,6 +29,7 @@ class _Default(object):
 
   revisionExpr = None
   remote = None
+  sync_j = 1
 
 class _XmlRemote(object):
   def __init__(self,
@@ -133,6 +134,9 @@ class XmlManifest(object):
     if d.revisionExpr:
       have_default = True
       e.setAttribute('revision', d.revisionExpr)
+    if d.sync_j > 1:
+      have_default = True
+      e.setAttribute('sync-j', '%d' % d.sync_j)
     if have_default:
       root.appendChild(e)
       root.appendChild(doc.createTextNode(''))
@@ -171,6 +175,14 @@ class XmlManifest(object):
         ce.setAttribute('dest', c.dest)
         e.appendChild(ce)
 
+    if self._repo_hooks_project:
+      root.appendChild(doc.createTextNode(''))
+      e = doc.createElement('repo-hooks')
+      e.setAttribute('in-project', self._repo_hooks_project.name)
+      e.setAttribute('enabled-list',
+                     ' '.join(self._repo_hooks_project.enabled_repo_hooks))
+      root.appendChild(e)
+
     doc.writexml(fd, '', '  ', '\n', 'UTF-8')
 
   @property
@@ -188,6 +200,11 @@ class XmlManifest(object):
     self._Load()
     return self._default
 
+  @property
+  def repo_hooks_project(self):
+    self._Load()
+    return self._repo_hooks_project
+
   @property
   def notice(self):
     self._Load()
@@ -207,6 +224,7 @@ class XmlManifest(object):
     self._projects = {}
     self._remotes = {}
     self._default = None
+    self._repo_hooks_project = None
     self._notice = None
     self.branch = None
     self._manifest_server = None
@@ -239,15 +257,15 @@ class XmlManifest(object):
   def _ParseManifest(self, is_root_file):
     root = xml.dom.minidom.parse(self.manifestFile)
     if not root or not root.childNodes:
-      raise ManifestParseError, \
-            "no root node in %s" % \
-            self.manifestFile
+      raise ManifestParseError(
+          "no root node in %s" %
+          self.manifestFile)
 
     config = root.childNodes[0]
     if config.nodeName != 'manifest':
-      raise ManifestParseError, \
-            "no <manifest> in %s" % \
-            self.manifestFile
+      raise ManifestParseError(
+          "no <manifest> in %s" %
+          self.manifestFile)
 
     for node in config.childNodes:
       if node.nodeName == 'remove-project':
@@ -255,25 +273,30 @@ class XmlManifest(object):
         try:
           del self._projects[name]
         except KeyError:
-          raise ManifestParseError, \
-                'project %s not found' % \
-                (name)
+          raise ManifestParseError(
+              'project %s not found' %
+              (name))
+
+        # If the manifest removes the hooks project, treat it as if it deleted
+        # the repo-hooks element too.
+        if self._repo_hooks_project and (self._repo_hooks_project.name == name):
+          self._repo_hooks_project = None
 
     for node in config.childNodes:
       if node.nodeName == 'remote':
         remote = self._ParseRemote(node)
         if self._remotes.get(remote.name):
-          raise ManifestParseError, \
-                'duplicate remote %s in %s' % \
-                (remote.name, self.manifestFile)
+          raise ManifestParseError(
+              'duplicate remote %s in %s' %
+              (remote.name, self.manifestFile))
         self._remotes[remote.name] = remote
 
     for node in config.childNodes:
       if node.nodeName == 'default':
         if self._default is not None:
-          raise ManifestParseError, \
-                'duplicate default in %s' % \
-                (self.manifestFile)
+          raise ManifestParseError(
+              'duplicate default in %s' %
+              (self.manifestFile))
         self._default = self._ParseDefault(node)
     if self._default is None:
       self._default = _Default()
@@ -281,29 +304,52 @@ class XmlManifest(object):
     for node in config.childNodes:
       if node.nodeName == 'notice':
         if self._notice is not None:
-          raise ManifestParseError, \
-                'duplicate notice in %s' % \
-                (self.manifestFile)
+          raise ManifestParseError(
+              'duplicate notice in %s' %
+              (self.manifestFile))
         self._notice = self._ParseNotice(node)
 
     for node in config.childNodes:
       if node.nodeName == 'manifest-server':
         url = self._reqatt(node, 'url')
         if self._manifest_server is not None:
-            raise ManifestParseError, \
-                'duplicate manifest-server in %s' % \
-                (self.manifestFile)
+            raise ManifestParseError(
+                'duplicate manifest-server in %s' %
+                (self.manifestFile))
         self._manifest_server = url
 
     for node in config.childNodes:
       if node.nodeName == 'project':
         project = self._ParseProject(node)
         if self._projects.get(project.name):
-          raise ManifestParseError, \
-                'duplicate project %s in %s' % \
-                (project.name, self.manifestFile)
+          raise ManifestParseError(
+              'duplicate project %s in %s' %
+              (project.name, self.manifestFile))
         self._projects[project.name] = project
 
+    for node in config.childNodes:
+      if node.nodeName == 'repo-hooks':
+        # Get the name of the project and the (space-separated) list of enabled.
+        repo_hooks_project = self._reqatt(node, 'in-project')
+        enabled_repo_hooks = self._reqatt(node, 'enabled-list').split()
+
+        # Only one project can be the hooks project
+        if self._repo_hooks_project is not None:
+          raise ManifestParseError(
+              'duplicate repo-hooks in %s' %
+              (self.manifestFile))
+
+        # Store a reference to the Project.
+        try:
+          self._repo_hooks_project = self._projects[repo_hooks_project]
+        except KeyError:
+          raise ManifestParseError(
+              'project %s not found for repo-hooks' %
+              (repo_hooks_project))
+
+        # Store the enabled hooks in the Project object.
+        self._repo_hooks_project.enabled_repo_hooks = enabled_repo_hooks
+
   def _AddMetaProjectMirror(self, m):
     name = None
     m_url = m.GetRemote(m.remote.name).url
@@ -359,6 +405,11 @@ class XmlManifest(object):
     d.revisionExpr = node.getAttribute('revision')
     if d.revisionExpr == '':
       d.revisionExpr = None
+    sync_j = node.getAttribute('sync-j')
+    if sync_j == '' or sync_j is None:
+      d.sync_j = 1
+    else:
+      d.sync_j = int(sync_j)
     return d
 
   def _ParseNotice(self, node):
@@ -435,7 +486,7 @@ class XmlManifest(object):
       worktree = None
       gitdir = os.path.join(self.topdir, '%s.git' % name)
     else:
-      worktree = os.path.join(self.topdir, path)
+      worktree = os.path.join(self.topdir, path).replace('\\', '/')
       gitdir = os.path.join(self.repodir, 'projects/%s.git' % path)
 
     project = Project(manifest = self,

progress.py

@@ -21,13 +21,14 @@ from trace import IsTrace
 _NOT_TTY = not os.isatty(2)
 
 class Progress(object):
-  def __init__(self, title, total=0):
+  def __init__(self, title, total=0, units=''):
     self._title = title
     self._total = total
     self._done = 0
     self._lastp = -1
     self._start = time()
     self._show = False
+    self._units = units
 
   def update(self, inc=1):
     self._done += inc
@@ -51,11 +52,11 @@ class Progress(object):
 
       if self._lastp != p:
         self._lastp = p
-        sys.stderr.write('\r%s: %3d%% (%d/%d)  ' % (
+        sys.stderr.write('\r%s: %3d%% (%d%s/%d%s)  ' % (
           self._title,
           p,
-          self._done,
-          self._total))
+          self._done, self._units,
+          self._total, self._units))
         sys.stderr.flush()
 
   def end(self):
@@ -69,9 +70,9 @@ class Progress(object):
       sys.stderr.flush()
     else:
       p = (100 * self._done) / self._total
-      sys.stderr.write('\r%s: %3d%% (%d/%d), done.  \n' % (
+      sys.stderr.write('\r%s: %3d%% (%d%s/%d%s), done.  \n' % (
         self._title,
         p,
-        self._done,
-        self._total))
+        self._done, self._units,
+        self._total, self._units))
       sys.stderr.flush()

project.py

@@ -12,6 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import traceback
 import errno
 import filecmp
 import os
@@ -24,7 +25,7 @@ import urllib2
 from color import Coloring
 from git_command import GitCommand
 from git_config import GitConfig, IsId
-from error import GitError, ImportError, UploadError
+from error import GitError, HookError, ImportError, UploadError
 from error import ManifestInvalidRevisionError
 
 from git_refs import GitRefs, HEAD, R_HEADS, R_TAGS, R_PUB, R_M
@@ -54,14 +55,25 @@ def not_rev(r):
 def sq(r):
   return "'" + r.replace("'", "'\''") + "'"
 
-hook_list = None
-def repo_hooks():
-  global hook_list
-  if hook_list is None:
+_project_hook_list = None
+def _ProjectHooks():
+  """List the hooks present in the 'hooks' directory.
+
+  These hooks are project hooks and are copied to the '.git/hooks' directory
+  of all subprojects.
+
+  This function caches the list of hooks (based on the contents of the
+  'repo/hooks' directory) on the first call.
+
+  Returns:
+    A list of absolute paths to all of the files in the hooks directory.
+  """
+  global _project_hook_list
+  if _project_hook_list is None:
     d = os.path.abspath(os.path.dirname(__file__))
     d = os.path.join(d , 'hooks')
-    hook_list = map(lambda x: os.path.join(d, x), os.listdir(d))
-  return hook_list
+    _project_hook_list = map(lambda x: os.path.join(d, x), os.listdir(d))
+  return _project_hook_list
 
 def relpath(dst, src):
   src = os.path.dirname(src)
@@ -223,6 +235,249 @@ class RemoteSpec(object):
     self.url = url
     self.review = review
 
+class RepoHook(object):
+  """A RepoHook contains information about a script to run as a hook.
+
+  Hooks are used to run a python script before running an upload (for instance,
+  to run presubmit checks).  Eventually, we may have hooks for other actions.
+
+  This shouldn't be confused with files in the 'repo/hooks' directory.  Those
+  files are copied into each '.git/hooks' folder for each project.  Repo-level
+  hooks are associated instead with repo actions.
+
+  Hooks are always python.  When a hook is run, we will load the hook into the
+  interpreter and execute its main() function.
+  """
+  def __init__(self,
+               hook_type,
+               hooks_project,
+               topdir,
+               abort_if_user_denies=False):
+    """RepoHook constructor.
+
+    Params:
+      hook_type: A string representing the type of hook.  This is also used
+          to figure out the name of the file containing the hook.  For
+          example: 'pre-upload'.
+      hooks_project: The project containing the repo hooks.  If you have a
+          manifest, this is manifest.repo_hooks_project.  OK if this is None,
+          which will make the hook a no-op.
+      topdir: Repo's top directory (the one containing the .repo directory).
+          Scripts will run with CWD as this directory.  If you have a manifest,
+          this is manifest.topdir
+      abort_if_user_denies: If True, we'll throw a HookError() if the user
+          doesn't allow us to run the hook.
+    """
+    self._hook_type = hook_type
+    self._hooks_project = hooks_project
+    self._topdir = topdir
+    self._abort_if_user_denies = abort_if_user_denies
+
+    # Store the full path to the script for convenience.
+    if self._hooks_project:
+      self._script_fullpath = os.path.join(self._hooks_project.worktree,
+                                           self._hook_type + '.py')
+    else:
+      self._script_fullpath = None
+
+  def _GetHash(self):
+    """Return a hash of the contents of the hooks directory.
+
+    We'll just use git to do this.  This hash has the property that if anything
+    changes in the directory we will return a different has.
+
+    SECURITY CONSIDERATION:
+      This hash only represents the contents of files in the hook directory, not
+      any other files imported or called by hooks.  Changes to imported files
+      can change the script behavior without affecting the hash.
+
+    Returns:
+      A string representing the hash.  This will always be ASCII so that it can
+      be printed to the user easily.
+    """
+    assert self._hooks_project, "Must have hooks to calculate their hash."
+
+    # We will use the work_git object rather than just calling GetRevisionId().
+    # That gives us a hash of the latest checked in version of the files that
+    # the user will actually be executing.  Specifically, GetRevisionId()
+    # doesn't appear to change even if a user checks out a different version
+    # of the hooks repo (via git checkout) nor if a user commits their own revs.
+    #
+    # NOTE: Local (non-committed) changes will not be factored into this hash.
+    # I think this is OK, since we're really only worried about warning the user
+    # about upstream changes.
+    return self._hooks_project.work_git.rev_parse('HEAD')
+
+  def _GetMustVerb(self):
+    """Return 'must' if the hook is required; 'should' if not."""
+    if self._abort_if_user_denies:
+      return 'must'
+    else:
+      return 'should'
+
+  def _CheckForHookApproval(self):
+    """Check to see whether this hook has been approved.
+
+    We'll look at the hash of all of the hooks.  If this matches the hash that
+    the user last approved, we're done.  If it doesn't, we'll ask the user
+    about approval.
+
+    Note that we ask permission for each individual hook even though we use
+    the hash of all hooks when detecting changes.  We'd like the user to be
+    able to approve / deny each hook individually.  We only use the hash of all
+    hooks because there is no other easy way to detect changes to local imports.
+
+    Returns:
+      True if this hook is approved to run; False otherwise.
+
+    Raises:
+      HookError: Raised if the user doesn't approve and abort_if_user_denies
+          was passed to the consturctor.
+    """
+    hooks_dir = self._hooks_project.worktree
+    hooks_config = self._hooks_project.config
+    git_approval_key = 'repo.hooks.%s.approvedhash' % self._hook_type
+
+    # Get the last hash that the user approved for this hook; may be None.
+    old_hash = hooks_config.GetString(git_approval_key)
+
+    # Get the current hash so we can tell if scripts changed since approval.
+    new_hash = self._GetHash()
+
+    if old_hash is not None:
+      # User previously approved hook and asked not to be prompted again.
+      if new_hash == old_hash:
+        # Approval matched.  We're done.
+        return True
+      else:
+        # Give the user a reason why we're prompting, since they last told
+        # us to "never ask again".
+        prompt = 'WARNING: Scripts have changed since %s was allowed.\n\n' % (
+            self._hook_type)
+    else:
+      prompt = ''
+
+    # Prompt the user if we're not on a tty; on a tty we'll assume "no".
+    if sys.stdout.isatty():
+      prompt += ('Repo %s run the script:\n'
+                 '  %s\n'
+                 '\n'
+                 'Do you want to allow this script to run '
+                 '(yes/yes-never-ask-again/NO)? ') % (
+                 self._GetMustVerb(), self._script_fullpath)
+      response = raw_input(prompt).lower()
+      print
+
+      # User is doing a one-time approval.
+      if response in ('y', 'yes'):
+        return True
+      elif response == 'yes-never-ask-again':
+        hooks_config.SetString(git_approval_key, new_hash)
+        return True
+
+    # For anything else, we'll assume no approval.
+    if self._abort_if_user_denies:
+      raise HookError('You must allow the %s hook or use --no-verify.' %
+                      self._hook_type)
+
+    return False
+
+  def _ExecuteHook(self, **kwargs):
+    """Actually execute the given hook.
+
+    This will run the hook's 'main' function in our python interpreter.
+
+    Args:
+      kwargs: Keyword arguments to pass to the hook.  These are often specific
+          to the hook type.  For instance, pre-upload hooks will contain
+          a project_list.
+    """
+    # Keep sys.path and CWD stashed away so that we can always restore them
+    # upon function exit.
+    orig_path = os.getcwd()
+    orig_syspath = sys.path
+
+    try:
+      # Always run hooks with CWD as topdir.
+      os.chdir(self._topdir)
+
+      # Put the hook dir as the first item of sys.path so hooks can do
+      # relative imports.  We want to replace the repo dir as [0] so
+      # hooks can't import repo files.
+      sys.path = [os.path.dirname(self._script_fullpath)] + sys.path[1:]
+
+      # Exec, storing global context in the context dict.  We catch exceptions
+      # and  convert to a HookError w/ just the failing traceback.
+      context = {}
+      try:
+        execfile(self._script_fullpath, context)
+      except Exception:
+        raise HookError('%s\nFailed to import %s hook; see traceback above.' % (
+                        traceback.format_exc(), self._hook_type))
+
+      # Running the script should have defined a main() function.
+      if 'main' not in context:
+        raise HookError('Missing main() in: "%s"' % self._script_fullpath)
+
+
+      # Add 'hook_should_take_kwargs' to the arguments to be passed to main.
+      # We don't actually want hooks to define their main with this argument--
+      # it's there to remind them that their hook should always take **kwargs.
+      # For instance, a pre-upload hook should be defined like:
+      #   def main(project_list, **kwargs):
+      #
+      # This allows us to later expand the API without breaking old hooks.
+      kwargs = kwargs.copy()
+      kwargs['hook_should_take_kwargs'] = True
+
+      # Call the main function in the hook.  If the hook should cause the
+      # build to fail, it will raise an Exception.  We'll catch that convert
+      # to a HookError w/ just the failing traceback.
+      try:
+        context['main'](**kwargs)
+      except Exception:
+        raise HookError('%s\nFailed to run main() for %s hook; see traceback '
+                        'above.' % (
+                        traceback.format_exc(), self._hook_type))
+    finally:
+      # Restore sys.path and CWD.
+      sys.path = orig_syspath
+      os.chdir(orig_path)
+
+  def Run(self, user_allows_all_hooks, **kwargs):
+    """Run the hook.
+
+    If the hook doesn't exist (because there is no hooks project or because
+    this particular hook is not enabled), this is a no-op.
+
+    Args:
+      user_allows_all_hooks: If True, we will never prompt about running the
+          hook--we'll just assume it's OK to run it.
+      kwargs: Keyword arguments to pass to the hook.  These are often specific
+          to the hook type.  For instance, pre-upload hooks will contain
+          a project_list.
+
+    Raises:
+      HookError: If there was a problem finding the hook or the user declined
+          to run a required hook (from _CheckForHookApproval).
+    """
+    # No-op if there is no hooks project or if hook is disabled.
+    if ((not self._hooks_project) or
+        (self._hook_type not in self._hooks_project.enabled_repo_hooks)):
+      return
+
+    # Bail with a nice error if we can't find the hook.
+    if not os.path.isfile(self._script_fullpath):
+      raise HookError('Couldn\'t find repo hook: "%s"' % self._script_fullpath)
+
+    # Make sure the user is OK with running the hook.
+    if (not user_allows_all_hooks) and (not self._CheckForHookApproval()):
+      return
+
+    # Run the hook with the same version of python we're using.
+    self._ExecuteHook(**kwargs)
+
+
 class Project(object):
   def __init__(self,
                manifest,
@@ -236,8 +491,11 @@ class Project(object):
     self.manifest = manifest
     self.name = name
     self.remote = remote
-    self.gitdir = gitdir
-    self.worktree = worktree
+    self.gitdir = gitdir.replace('\\', '/')
+    if worktree:
+      self.worktree = worktree.replace('\\', '/')
+    else:
+      self.worktree = None
     self.relpath = relpath
     self.revisionExpr = revisionExpr
 
@@ -261,6 +519,10 @@ class Project(object):
     self.bare_git = self._GitGetByExec(self, bare=True)
     self.bare_ref = GitRefs(gitdir)
 
+    # This will be filled in if a project is later identified to be the
+    # project containing repo hooks.
+    self.enabled_repo_hooks = []
+
   @property
   def Exists(self):
     return os.path.isdir(self.gitdir)
@@ -388,13 +650,18 @@ class Project(object):
 
     return False
 
-  def PrintWorkTreeStatus(self):
+  def PrintWorkTreeStatus(self, output_redir=None):
     """Prints the status of the repository to stdout.
+
+    Args:
+      output: If specified, redirect the output to this object.
     """
     if not os.path.isdir(self.worktree):
-      print ''
-      print 'project %s/' % self.relpath
-      print '  missing (run "repo sync")'
+      if output_redir == None:
+        output_redir = sys.stdout
+      print >>output_redir, ''
+      print >>output_redir, 'project %s/' % self.relpath
+      print >>output_redir, '  missing (run "repo sync")'
       return
 
     self.work_git.update_index('-q',
@@ -409,6 +676,8 @@ class Project(object):
       return 'CLEAN'
 
     out = StatusColoring(self.config)
+    if not output_redir == None:
+      out.redirect(output_redir)
     out.project('project %-40s', self.relpath + '/')
 
     branch = self.CurrentBranch
@@ -458,6 +727,7 @@ class Project(object):
       else:
         out.write('%s', line)
       out.nl()
+
     return 'DIRTY'
 
   def PrintWorkTreeDiff(self):
@@ -521,7 +791,7 @@ class Project(object):
       if R_HEADS + n not in heads:
         self.bare_git.DeleteRef(name, id)
 
-  def GetUploadableBranches(self):
+  def GetUploadableBranches(self, selected_branch=None):
     """List any branches which can be uploaded for review.
     """
     heads = {}
@@ -537,6 +807,8 @@ class Project(object):
     for branch, id in heads.iteritems():
       if branch in pubed and pubed[branch] == id:
         continue
+      if selected_branch and branch != selected_branch:
+        continue
 
       rb = self.GetUploadableBranch(branch)
       if rb:
@@ -677,11 +949,11 @@ class Project(object):
     """Perform only the local IO portion of the sync process.
        Network access is not required.
     """
-    self._InitWorkTree()
     all = self.bare_ref.all
     self.CleanPublishedCache(all)
-
     revid = self.GetRevisionId(all)
+
+    self._InitWorkTree()
     head = self.work_git.GetHead()
     if head.startswith(R_HEADS):
       branch = head[len(R_HEADS):]
@@ -897,6 +1169,13 @@ class Project(object):
 
   def CheckoutBranch(self, name):
     """Checkout a local topic branch.
+
+        Args:
+          name: The name of the branch to checkout.
+
+        Returns:
+          True if the checkout succeeded; False if it didn't; None if the branch
+          didn't exist.
     """
     rev = R_HEADS + name
     head = self.work_git.GetHead()
@@ -911,7 +1190,7 @@ class Project(object):
     except KeyError:
       # Branch does not exist in this project
       #
-      return False
+      return None
 
     if head.startswith(R_HEADS):
       try:
@@ -934,13 +1213,19 @@ class Project(object):
 
   def AbandonBranch(self, name):
     """Destroy a local topic branch.
+
+    Args:
+      name: The name of the branch to abandon.
+
+    Returns:
+      True if the abandon succeeded; False if it didn't; None if the branch
+      didn't exist.
     """
     rev = R_HEADS + name
     all = self.bare_ref.all
     if rev not in all:
-      # Doesn't exist; assume already abandoned.
-      #
-      return True
+      # Doesn't exist
+      return None
 
     head = self.work_git.GetHead()
     if head == rev:
@@ -1085,6 +1370,13 @@ class Project(object):
         ref_dir = None
 
     cmd = ['fetch']
+
+    # The --depth option only affects the initial fetch; after that we'll do
+    # full fetches of changes.
+    depth = self.manifest.manifestProject.config.GetString('repo.depth')
+    if depth and initial:
+      cmd.append('--depth=%s' % depth)
+
     if quiet:
       cmd.append('--quiet')
     if not self.worktree:
@@ -1189,13 +1481,16 @@ class Project(object):
     hooks = self._gitdir_path('hooks')
     if not os.path.exists(hooks):
       os.makedirs(hooks)
-    for stock_hook in repo_hooks():
+    for stock_hook in _ProjectHooks():
       name = os.path.basename(stock_hook)
 
-      if name in ('commit-msg') and not self.remote.review:
+      if name in ('commit-msg',) and not self.remote.review \
+            and not self is self.manifest.manifestProject:
         # Don't install a Gerrit Code Review hook if this
         # project does not appear to use it for reviews.
         #
+        # Since the manifest project is one of those, but also
+        # managed through gerrit, it's excluded
         continue
 
       dst = os.path.join(hooks, name)
@@ -1285,6 +1580,11 @@ class Project(object):
       cmd.append(HEAD)
       if GitCommand(self, cmd).Wait() != 0:
         raise GitError("cannot initialize work tree")
+
+      rr_cache = os.path.join(self.gitdir, 'rr-cache')
+      if not os.path.exists(rr_cache):
+        os.makedirs(rr_cache)
+
       self._CopyFiles()
 
   def _gitdir_path(self, path):
@@ -1443,6 +1743,22 @@ class Project(object):
       return r
 
     def __getattr__(self, name):
+      """Allow arbitrary git commands using pythonic syntax.
+
+      This allows you to do things like:
+        git_obj.rev_parse('HEAD')
+
+      Since we don't have a 'rev_parse' method defined, the __getattr__ will
+      run.  We'll replace the '_' with a '-' and try to run a git command.
+      Any other arguments will be passed to the git command.
+
+      Args:
+        name: The name of the git command to call.  Any '_' characters will
+            be replaced with '-'.
+
+      Returns:
+        A callable object that will try to call git with the named command.
+      """
       name = name.replace('_', '-')
       def runner(*args):
         cmdv = [name]

repo

@@ -2,7 +2,7 @@
 
 ## repo default configuration
 ##
-REPO_URL='git://android.git.kernel.org/tools/repo.git'
+REPO_URL='https://code.google.com/p/git-repo/'
 REPO_REV='stable'
 
 # Copyright (C) 2008 Google Inc.
@@ -28,7 +28,7 @@ if __name__ == '__main__':
 del magic
 
 # increment this whenever we make important changes to this script
-VERSION = (1, 9)
+VERSION = (1, 12)
 
 # increment this if the MAINTAINER_KEYS block is modified
 KEYRING_VERSION = (1,0)
@@ -121,6 +121,10 @@ group.add_option('--mirror',
 group.add_option('--reference',
                  dest='reference',
                  help='location of mirror directory', metavar='DIR')
+group.add_option('--depth', type='int', default=None,
+                 dest='depth',
+                 help='create a shallow clone with given depth; see git clone')
+
 
 # Tool
 group = init_optparse.add_option_group('repo Version options')
@@ -259,8 +263,8 @@ def _SetupGnuPG(quiet):
             gpg_dir, e.strerror)
       sys.exit(1)
 
-  env = dict(os.environ)
-  env['GNUPGHOME'] = gpg_dir
+  env = os.environ.copy()
+  env['GNUPGHOME'] = gpg_dir.encode()
 
   cmd = ['gpg', '--import']
   try:
@@ -378,8 +382,8 @@ def _Verify(cwd, branch, quiet):
         % (branch, cur)
       print >>sys.stderr
 
-  env = dict(os.environ)
-  env['GNUPGHOME'] = gpg_dir
+  env = os.environ.copy()
+  env['GNUPGHOME'] = gpg_dir.encode()
 
   cmd = [GIT, 'tag', '-v', cur]
   proc = subprocess.Popen(cmd,
@@ -430,10 +434,14 @@ def _FindRepo():
   dir = os.getcwd()
   repo = None
 
-  while dir != '/' and not repo:
+  olddir = None
+  while dir != '/' \
+    and dir != olddir \
+    and not repo:
     repo = os.path.join(dir, repodir, REPO_MAIN)
     if not os.path.isfile(repo):
       repo = None
+      olddir = dir
       dir = os.path.dirname(dir)
   return (repo, os.path.join(dir, repodir))
 
@@ -479,6 +487,7 @@ def _Help(args):
   if args:
     if args[0] == 'init':
       init_optparse.print_help()
+      sys.exit(0)
     else:
       print >>sys.stderr,\
       "error: '%s' is not a bootstrap command.\n"\
@@ -591,4 +600,3 @@ def main(orig_args):
 
 if __name__ == '__main__':
   main(sys.argv[1:])
-

subcmds/abandon.py

@@ -41,21 +41,30 @@ It is equivalent to "git branch -D <branchname>".
 
     nb = args[0]
     err = []
+    success = []
     all = self.GetProjects(args[1:])
 
     pm = Progress('Abandon %s' % nb, len(all))
     for project in all:
       pm.update()
-      if not project.AbandonBranch(nb):
-        err.append(project)
+
+      status = project.AbandonBranch(nb)
+      if status is not None:
+        if status:
+          success.append(project)
+        else:
+          err.append(project)
     pm.end()
 
     if err:
-      if len(err) == len(all):
-        print >>sys.stderr, 'error: no project has branch %s' % nb
-      else:
-        for p in err:
-          print >>sys.stderr,\
-            "error: %s/: cannot abandon %s" \
-            % (p.relpath, nb)
+      for p in err:
+        print >>sys.stderr,\
+          "error: %s/: cannot abandon %s" \
+          % (p.relpath, nb)
       sys.exit(1)
+    elif not success:
+      print >>sys.stderr, 'error: no project has branch %s' % nb
+      sys.exit(1)
+    else:
+      print >>sys.stderr, 'Abandoned in %d project(s):\n  %s' % (
+            len(success), '\n  '.join(p.relpath for p in success))

subcmds/checkout.py

@@ -38,21 +38,27 @@ The command is equivalent to:
 
     nb = args[0]
     err = []
+    success = []
     all = self.GetProjects(args[1:])
 
     pm = Progress('Checkout %s' % nb, len(all))
     for project in all:
       pm.update()
-      if not project.CheckoutBranch(nb):
-        err.append(project)
+
+      status = project.CheckoutBranch(nb)
+      if status is not None:
+        if status:
+          success.append(project)
+        else:
+          err.append(project)
     pm.end()
 
     if err:
-      if len(err) == len(all):
-        print >>sys.stderr, 'error: no project has branch %s' % nb
-      else:
-        for p in err:
-          print >>sys.stderr,\
-            "error: %s/: cannot checkout %s" \
-            % (p.relpath, nb)
+      for p in err:
+        print >>sys.stderr,\
+          "error: %s/: cannot checkout %s" \
+          % (p.relpath, nb)
+      sys.exit(1)
+    elif not success:
+      print >>sys.stderr, 'error: no project has branch %s' % nb
       sys.exit(1)

subcmds/cherry_pick.py

@@ -0,0 +1,114 @@
+#
+# Copyright (C) 2010 The Android Open Source Project
+#
+# Licensed 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.
+
+import sys, re, string, random, os
+from command import Command
+from git_command import GitCommand
+
+CHANGE_ID_RE = re.compile(r'^\s*Change-Id: I([0-9a-f]{40})\s*$')
+
+class CherryPick(Command):
+  common = True
+  helpSummary = "Cherry-pick a change."
+  helpUsage = """
+%prog <sha1>
+"""
+  helpDescription = """
+'%prog' cherry-picks a change from one branch to another.
+The change id will be updated, and a reference to the old
+change id will be added.
+"""
+
+  def _Options(self, p):
+    pass
+
+  def Execute(self, opt, args):
+    if len(args) != 1:
+      self.Usage()
+
+    reference = args[0]
+
+    p = GitCommand(None,
+                   ['rev-parse', '--verify', reference],
+                   capture_stdout = True,
+                   capture_stderr = True)
+    if p.Wait() != 0:
+      print >>sys.stderr, p.stderr
+      sys.exit(1)
+    sha1 = p.stdout.strip()
+
+    p = GitCommand(None, ['cat-file', 'commit', sha1], capture_stdout=True)
+    if p.Wait() != 0:
+      print >>sys.stderr, "error: Failed to retrieve old commit message"
+      sys.exit(1)
+    old_msg = self._StripHeader(p.stdout)
+
+    p = GitCommand(None,
+                   ['cherry-pick', sha1],
+                   capture_stdout = True,
+                   capture_stderr = True)
+    status = p.Wait()
+
+    print >>sys.stdout, p.stdout
+    print >>sys.stderr, p.stderr
+
+    if status == 0:
+      # The cherry-pick was applied correctly. We just need to edit the
+      # commit message.
+      new_msg = self._Reformat(old_msg, sha1)
+
+      p = GitCommand(None, ['commit', '--amend', '-F', '-'],
+                     provide_stdin = True,
+                     capture_stdout = True,
+                     capture_stderr = True)
+      p.stdin.write(new_msg)
+      if p.Wait() != 0:
+        print >>sys.stderr, "error: Failed to update commit message"
+        sys.exit(1)
+
+    else:
+      print >>sys.stderr, """\
+NOTE: When committing (please see above) and editing the commit message,
+please remove the old Change-Id-line and add:
+"""
+      print >>sys.stderr, self._GetReference(sha1)
+      print >>sys.stderr
+
+  def _IsChangeId(self, line):
+    return CHANGE_ID_RE.match(line)
+
+  def _GetReference(self, sha1):
+    return "(cherry picked from commit %s)" % sha1
+
+  def _StripHeader(self, commit_msg):
+    lines = commit_msg.splitlines()
+    return "\n".join(lines[lines.index("")+1:])
+
+  def _Reformat(self, old_msg, sha1):
+    new_msg = []
+
+    for line in old_msg.splitlines():
+      if not self._IsChangeId(line):
+        new_msg.append(line)
+
+    # Add a blank line between the message and the change id/reference
+    try:
+      if new_msg[-1].strip() != "":
+        new_msg.append("")
+    except IndexError:
+      pass
+
+    new_msg.append(self._GetReference(sha1))
+    return "\n".join(new_msg)

subcmds/download.py

@@ -36,6 +36,9 @@ makes it available in your project's local working directory.
     pass
 
   def _ParseChangeIds(self, args):
+    if not args:
+      self.Usage()
+
     to_get = []
     project = None
 

subcmds/forall.py

@@ -151,11 +151,11 @@ terminal and are not redirected.
     first = True
 
     for project in self.GetProjects(args):
-      env = dict(os.environ.iteritems())
+      env = os.environ.copy()
       def setenv(name, val):
         if val is None:
           val = ''
-        env[name] = val
+        env[name] = val.encode()
 
       setenv('REPO_PROJECT', project.name)
       setenv('REPO_PATH', project.relpath)
@@ -169,6 +169,12 @@ terminal and are not redirected.
       else:
         cwd = project.worktree
 
+      if not os.path.exists(cwd):
+        if (opt.project_header and opt.verbose) \
+        or not opt.project_header:
+          print >>sys.stderr, 'skipping %s/' % project.relpath
+        continue
+
       if opt.project_header:
         stdin = subprocess.PIPE
         stdout = subprocess.PIPE

subcmds/help.py

@@ -94,6 +94,8 @@ See 'repo help --all' for a complete list of recognized commands.
           body = getattr(cmd, bodyAttr)
         except AttributeError:
           return
+        if body == '' or body is None:
+          return
 
         self.nl()
 

subcmds/init.py

@@ -14,6 +14,7 @@
 # limitations under the License.
 
 import os
+import shutil
 import sys
 
 from color import Coloring
@@ -81,6 +82,9 @@ to update the working directory files.
     g.add_option('--reference',
                  dest='reference',
                  help='location of mirror directory', metavar='DIR')
+    g.add_option('--depth', type='int', default=None,
+                 dest='depth',
+                 help='create a shallow clone with given depth; see git clone')
 
     # Tool
     g = p.add_option_group('repo Version options')
@@ -137,6 +141,11 @@ to update the working directory files.
     if not m.Sync_NetworkHalf():
       r = m.GetRemote(m.remote.name)
       print >>sys.stderr, 'fatal: cannot obtain manifest %s' % r.url
+
+      # Better delete the manifest git dir if we created it; otherwise next
+      # time (when user fixes problems) we won't go through the "is_new" logic.
+      if is_new:
+        shutil.rmtree(m.gitdir)
       sys.exit(1)
 
     syncbuf = SyncBuffer(m.config)
@@ -226,6 +235,25 @@ to update the working directory files.
     if a in ('y', 'yes', 't', 'true', 'on'):
       gc.SetString('color.ui', 'auto')
 
+  def _ConfigureDepth(self, opt):
+    """Configure the depth we'll sync down.
+
+    Args:
+      opt: Options from optparse.  We care about opt.depth.
+    """
+    # Opt.depth will be non-None if user actually passed --depth to repo init.
+    if opt.depth is not None:
+      if opt.depth > 0:
+        # Positive values will set the depth.
+        depth = str(opt.depth)
+      else:
+        # Negative numbers will clear the depth; passing None to SetString
+        # will do that.
+        depth = None
+
+      # We store the depth in the main manifest project.
+      self.manifest.manifestProject.config.SetString('repo.depth', depth)
+
   def Execute(self, opt, args):
     git_require(MIN_GIT_VERSION, fail=True)
     self._SyncManifest(opt)
@@ -235,6 +263,8 @@ to update the working directory files.
       self._ConfigureUser()
       self._ConfigureColor()
 
+    self._ConfigureDepth(opt)
+
     if self.manifest.IsMirror:
       type = 'mirror '
     else:

subcmds/list.py

@@ -0,0 +1,48 @@
+#
+# Copyright (C) 2011 The Android Open Source Project
+#
+# Licensed 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.
+
+from command import Command, MirrorSafeCommand
+
+class List(Command, MirrorSafeCommand):
+  common = True
+  helpSummary = "List projects and their associated directories"
+  helpUsage = """
+%prog [<project>...]
+"""
+  helpDescription = """
+List all projects; pass '.' to list the project for the cwd.
+
+This is similar to running: repo forall -c 'echo "$REPO_PATH : $REPO_PROJECT"'.
+"""
+
+  def Execute(self, opt, args):
+    """List all projects and the associated directories.
+
+    This may be possible to do with 'repo forall', but repo newbies have
+    trouble figuring that out.  The idea here is that it should be more
+    discoverable.
+
+    Args:
+      opt: The options.  We don't take any.
+      args: Positional args.  Can be a list of projects to list, or empty.
+    """
+    projects = self.GetProjects(args)
+
+    lines = []
+    for project in projects:
+      lines.append("%s : %s" % (project.relpath, project.name))
+
+    lines.sort()
+    print '\n'.join(lines)

subcmds/selfupdate.py

@@ -55,6 +55,7 @@ need to be performed by an end-user.
         print >>sys.stderr, "error: can't update repo"
         sys.exit(1)
 
+      rp.bare_git.gc('--auto')
       _PostRepoFetch(rp,
                      no_repo_verify = opt.no_repo_verify,
                      verbose = True)

subcmds/status.py

@@ -15,6 +15,15 @@
 
 from command import PagedCommand
 
+try:
+  import threading as _threading
+except ImportError:
+  import dummy_threading as _threading
+
+import itertools
+import sys
+import StringIO
+
 class Status(PagedCommand):
   common = True
   helpSummary = "Show the working tree status"
@@ -27,6 +36,9 @@ and the most recent commit on this branch (HEAD), in each project
 specified.  A summary is displayed, one line per file where there
 is a difference between these three states.
 
+The -j/--jobs option can be used to run multiple status queries
+in parallel.
+
 Status Display
 --------------
 
@@ -60,9 +72,34 @@ the following meanings:
 
 """
 
+  def _Options(self, p):
+    p.add_option('-j', '--jobs',
+                 dest='jobs', action='store', type='int', default=2,
+                 help="number of projects to check simultaneously")
+
+  def _StatusHelper(self, project, clean_counter, sem, output):
+    """Obtains the status for a specific project.
+
+    Obtains the status for a project, redirecting the output to
+    the specified object. It will release the semaphore
+    when done.
+
+    Args:
+      project: Project to get status of.
+      clean_counter: Counter for clean projects.
+      sem: Semaphore, will call release() when complete.
+      output: Where to output the status.
+    """
+    try:
+      state = project.PrintWorkTreeStatus(output)
+      if state == 'CLEAN':
+        clean_counter.next()
+    finally:
+      sem.release()
+
   def Execute(self, opt, args):
     all = self.GetProjects(args)
-    clean = 0
+    counter = itertools.count()
 
     on = {}
     for project in all:
@@ -77,9 +114,24 @@ the following meanings:
     for cb in branch_names:
       print '# on branch %s' % cb
 
-    for project in all:
-      state = project.PrintWorkTreeStatus()
-      if state == 'CLEAN':
-        clean += 1
-    if len(all) == clean:
+    if opt.jobs == 1:
+      for project in all:
+        state = project.PrintWorkTreeStatus()
+        if state == 'CLEAN':
+          counter.next()
+    else:
+      sem = _threading.Semaphore(opt.jobs)
+      threads_and_output = []
+      for project in all:
+        sem.acquire()
+        output = StringIO.StringIO()
+        t = _threading.Thread(target=self._StatusHelper,
+                              args=(project, counter, sem, output))
+        threads_and_output.append((t, output))
+        t.start()
+      for (t, output) in threads_and_output:
+        t.join()
+        sys.stdout.write(output.getvalue())
+        output.close()
+    if len(all) == counter.next():
       print 'nothing to commit (working directory clean)'

subcmds/sync.py

@@ -28,6 +28,14 @@ try:
 except ImportError:
   import dummy_threading as _threading
 
+try:
+  import resource
+  def _rlimit_nofile():
+    return resource.getrlimit(resource.RLIMIT_NOFILE)
+except ImportError:
+  def _rlimit_nofile():
+    return (256, 256)
+
 from git_command import GIT
 from git_refs import R_HEADS
 from project import HEAD
@@ -39,6 +47,10 @@ from project import R_HEADS
 from project import SyncBuffer
 from progress import Progress
 
+class _FetchError(Exception):
+  """Internal error thrown in _FetchHelper() when we don't want stack trace."""
+  pass
+
 class Sync(Command, MirrorSafeCommand):
   jobs = 1
   common = True
@@ -68,7 +80,8 @@ revision is temporarily needed.
 
 The -s/--smart-sync option can be used to sync to a known good
 build as specified by the manifest-server element in the current
-manifest.
+manifest. The -t/--smart-tag option is similar and allows you to
+specify a custom tag/label.
 
 The -f/--force-broken option can be used to proceed with syncing
 other projects if a project sync fails.
@@ -104,6 +117,8 @@ later is required to fix a server side protocol bug.
 """
 
   def _Options(self, p, show_smart=True):
+    self.jobs = self.manifest.default.sync_j
+
     p.add_option('-f', '--force-broken',
                  dest='force_broken', action='store_true',
                  help="continue sync even if a project fails to sync")
@@ -121,11 +136,15 @@ later is required to fix a server side protocol bug.
                  help='be more quiet')
     p.add_option('-j','--jobs',
                  dest='jobs', action='store', type='int',
-                 help="number of projects to fetch simultaneously")
+                 default=self.jobs,
+                 help="projects to fetch simultaneously (default %d)" % self.jobs)
     if show_smart:
       p.add_option('-s', '--smart-sync',
                    dest='smart_sync', action='store_true',
                    help='smart sync using manifest from a known good build')
+      p.add_option('-t', '--smart-tag',
+                   dest='smart_tag', action='store',
+                   help='smart sync using manifest from a known tag')
 
     g = p.add_option_group('repo Version options')
     g.add_option('--no-repo-verify',
@@ -135,20 +154,61 @@ later is required to fix a server side protocol bug.
                  dest='repo_upgraded', action='store_true',
                  help=SUPPRESS_HELP)
 
-  def _FetchHelper(self, opt, project, lock, fetched, pm, sem):
-      if not project.Sync_NetworkHalf(quiet=opt.quiet):
-        print >>sys.stderr, 'error: Cannot fetch %s' % project.name
-        if opt.force_broken:
-          print >>sys.stderr, 'warn: --force-broken, continuing to sync'
-        else:
-          sem.release()
-          sys.exit(1)
+  def _FetchHelper(self, opt, project, lock, fetched, pm, sem, err_event):
+      """Main function of the fetch threads when jobs are > 1.
 
-      lock.acquire()
-      fetched.add(project.gitdir)
-      pm.update()
-      lock.release()
-      sem.release()
+      Args:
+        opt: Program options returned from optparse.  See _Options().
+        project: Project object for the project to fetch.
+        lock: Lock for accessing objects that are shared amongst multiple
+            _FetchHelper() threads.
+        fetched: set object that we will add project.gitdir to when we're done
+            (with our lock held).
+        pm: Instance of a Project object.  We will call pm.update() (with our
+            lock held).
+        sem: We'll release() this semaphore when we exit so that another thread
+            can be started up.
+        err_event: We'll set this event in the case of an error (after printing
+            out info about the error).
+      """
+      # We'll set to true once we've locked the lock.
+      did_lock = False
+
+      # Encapsulate everything in a try/except/finally so that:
+      # - We always set err_event in the case of an exception.
+      # - We always make sure we call sem.release().
+      # - We always make sure we unlock the lock if we locked it.
+      try:
+        try:
+          success = project.Sync_NetworkHalf(quiet=opt.quiet)
+
+          # Lock around all the rest of the code, since printing, updating a set
+          # and Progress.update() are not thread safe.
+          lock.acquire()
+          did_lock = True
+
+          if not success:
+            print >>sys.stderr, 'error: Cannot fetch %s' % project.name
+            if opt.force_broken:
+              print >>sys.stderr, 'warn: --force-broken, continuing to sync'
+            else:
+              raise _FetchError()
+
+          fetched.add(project.gitdir)
+          pm.update()
+        except BaseException, e:
+          # Notify the _Fetch() function about all errors.
+          err_event.set()
+
+          # If we got our own _FetchError, we don't want a stack trace.
+          # However, if we got something else (something in Sync_NetworkHalf?),
+          # we'd like one (so re-raise after we've set err_event).
+          if not isinstance(e, _FetchError):
+            raise
+      finally:
+        if did_lock:
+          lock.release()
+        sem.release()
 
   def _Fetch(self, projects, opt):
     fetched = set()
@@ -169,7 +229,13 @@ later is required to fix a server side protocol bug.
       threads = set()
       lock = _threading.Lock()
       sem = _threading.Semaphore(self.jobs)
+      err_event = _threading.Event()
       for project in projects:
+        # Check for any errors before starting any new threads.
+        # ...we'll let existing threads finish, though.
+        if err_event.isSet():
+          break
+
         sem.acquire()
         t = _threading.Thread(target = self._FetchHelper,
                               args = (opt,
@@ -177,14 +243,22 @@ later is required to fix a server side protocol bug.
                                       lock,
                                       fetched,
                                       pm,
-                                      sem))
+                                      sem,
+                                      err_event))
         threads.add(t)
         t.start()
 
       for t in threads:
         t.join()
 
+      # If we saw an error, exit with code 1 so that other scripts can check.
+      if err_event.isSet():
+        print >>sys.stderr, '\nerror: Exited sync due to fetch errors'
+        sys.exit(1)
+
     pm.end()
+    for project in projects:
+      project.bare_git.gc('--auto')
     return fetched
 
   def UpdateProjectList(self):
@@ -249,6 +323,10 @@ uncommitted changes are present' % project.relpath
   def Execute(self, opt, args):
     if opt.jobs:
       self.jobs = opt.jobs
+    if self.jobs > 1:
+      soft_limit, _ = _rlimit_nofile()
+      self.jobs = min(self.jobs, (soft_limit - 5) / 3)
+
     if opt.network_only and opt.detach_head:
       print >>sys.stderr, 'error: cannot combine -n and -d'
       sys.exit(1)
@@ -256,27 +334,31 @@ uncommitted changes are present' % project.relpath
       print >>sys.stderr, 'error: cannot combine -n and -l'
       sys.exit(1)
 
-    if opt.smart_sync:
+    if opt.smart_sync or opt.smart_tag:
       if not self.manifest.manifest_server:
         print >>sys.stderr, \
             'error: cannot smart sync: no manifest server defined in manifest'
         sys.exit(1)
       try:
         server = xmlrpclib.Server(self.manifest.manifest_server)
-        p = self.manifest.manifestProject
-        b = p.GetBranch(p.CurrentBranch)
-        branch = b.merge
-        if branch.startswith(R_HEADS):
-          branch = branch[len(R_HEADS):]
+        if opt.smart_sync:
+          p = self.manifest.manifestProject
+          b = p.GetBranch(p.CurrentBranch)
+          branch = b.merge
+          if branch.startswith(R_HEADS):
+            branch = branch[len(R_HEADS):]
 
-        env = dict(os.environ)
-        if (env.has_key('TARGET_PRODUCT') and
-            env.has_key('TARGET_BUILD_VARIANT')):
-          target = '%s-%s' % (env['TARGET_PRODUCT'],
-                              env['TARGET_BUILD_VARIANT'])
-          [success, manifest_str] = server.GetApprovedManifest(branch, target)
+          env = os.environ.copy()
+          if (env.has_key('TARGET_PRODUCT') and
+              env.has_key('TARGET_BUILD_VARIANT')):
+            target = '%s-%s' % (env['TARGET_PRODUCT'],
+                                env['TARGET_BUILD_VARIANT'])
+            [success, manifest_str] = server.GetApprovedManifest(branch, target)
+          else:
+            [success, manifest_str] = server.GetApprovedManifest(branch)
         else:
-          [success, manifest_str] = server.GetApprovedManifest(branch)
+          assert(opt.smart_tag)
+          [success, manifest_str] = server.GetManifest(opt.smart_tag)
 
         if success:
           manifest_name = "smart_sync_override.xml"
@@ -413,9 +495,9 @@ warning: Cannot automatically authenticate repo."""
       % (project.name, rev)
     return False
 
-  env = dict(os.environ)
-  env['GIT_DIR'] = project.gitdir
-  env['GNUPGHOME'] = gpg_dir
+  env = os.environ.copy()
+  env['GIT_DIR'] = project.gitdir.encode()
+  env['GNUPGHOME'] = gpg_dir.encode()
 
   cmd = [GIT, 'tag', '-v', cur]
   proc = subprocess.Popen(cmd,

subcmds/upload.py

@@ -19,7 +19,8 @@ import sys
 
 from command import InteractiveCommand
 from editor import Editor
-from error import UploadError
+from error import HookError, UploadError
+from project import RepoHook
 
 UNUSUAL_COMMIT_THRESHOLD = 5
 
@@ -119,6 +120,32 @@ Gerrit Code Review:  http://code.google.com/p/gerrit/
     p.add_option('--cc',
                  type='string',  action='append', dest='cc',
                  help='Also send email to these email addresses.')
+    p.add_option('--br',
+                 type='string',  action='store', dest='branch',
+                 help='Branch to upload.')
+
+    # Options relating to upload hook.  Note that verify and no-verify are NOT
+    # opposites of each other, which is why they store to different locations.
+    # We are using them to match 'git commit' syntax.
+    #
+    # Combinations:
+    # - no-verify=False, verify=False (DEFAULT):
+    #   If stdout is a tty, can prompt about running upload hooks if needed.
+    #   If user denies running hooks, the upload is cancelled.  If stdout is
+    #   not a tty and we would need to prompt about upload hooks, upload is
+    #   cancelled.
+    # - no-verify=False, verify=True:
+    #   Always run upload hooks with no prompt.
+    # - no-verify=True, verify=False:
+    #   Never run upload hooks, but upload anyway (AKA bypass hooks).
+    # - no-verify=True, verify=True:
+    #   Invalid
+    p.add_option('--no-verify',
+                 dest='bypass_hooks', action='store_true',
+                 help='Do not run the upload hook.')
+    p.add_option('--verify',
+                 dest='allow_all_hooks', action='store_true',
+                 help='Run the upload hook without prompting.')
 
   def _SingleBranch(self, opt, branch, people):
     project = branch.project
@@ -283,15 +310,19 @@ Gerrit Code Review:  http://code.google.com/p/gerrit/
         have_errors = True
 
     print >>sys.stderr, ''
-    print >>sys.stderr, '--------------------------------------------'
+    print >>sys.stderr, '----------------------------------------------------------------------'
 
     if have_errors:
       for branch in todo:
         if not branch.uploaded:
-          print >>sys.stderr, '[FAILED] %-15s %-15s  (%s)' % (
+          if len(str(branch.error)) <= 30:
+            fmt = ' (%s)'
+          else:
+            fmt = '\n       (%s)'
+          print >>sys.stderr, ('[FAILED] %-15s %-15s' + fmt) % (
                  branch.project.relpath + '/', \
                  branch.name, \
-                 branch.error)
+                 str(branch.error))
       print >>sys.stderr, ''
 
     for branch in todo:
@@ -308,6 +339,25 @@ Gerrit Code Review:  http://code.google.com/p/gerrit/
     pending = []
     reviewers = []
     cc = []
+    branch = None
+
+    if opt.branch:
+      branch = opt.branch
+
+    for project in project_list:
+      avail = project.GetUploadableBranches(branch)
+      if avail:
+        pending.append((project, avail))
+
+    if pending and (not opt.bypass_hooks):
+      hook = RepoHook('pre-upload', self.manifest.repo_hooks_project,
+                      self.manifest.topdir, abort_if_user_denies=True)
+      pending_proj_names = [project.name for (project, avail) in pending]
+      try:
+        hook.Run(opt.allow_all_hooks, project_list=pending_proj_names)
+      except HookError, e:
+        print >>sys.stderr, "ERROR: %s" % str(e)
+        return
 
     if opt.reviewers:
       reviewers = _SplitEmails(opt.reviewers)
@@ -315,11 +365,6 @@ Gerrit Code Review:  http://code.google.com/p/gerrit/
       cc = _SplitEmails(opt.cc)
     people = (reviewers,cc)
 
-    for project in project_list:
-      avail = project.GetUploadableBranches()
-      if avail:
-        pending.append((project, avail))
-
     if not pending:
       print >>sys.stdout, "no branches ready for upload"
     elif len(pending) == 1 and len(pending[0][1]) == 1: