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GITC: Add repo sync support.

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Add repo sync support for GITC checkouts. If the user is in the
GITC client directory they can still pull the sources as normal
if they pass in the --force-gitc argument. Otherwise the user
should call repo sync in the GITC view to update the user's
remote view. (This works because .repo in the GITC view will
link to .repo in the client config directory.)

Part of the support for this change is the refactoring of GITC
related code into gitc_utils.py.

Change-Id: I2636aaa50b450b6f091309db8dd0e8f4dbdad579
This commit is contained in:
Simran Basi
2015-08-10 13:23:23 -07:00
parent 5d0c3a614e
commit bdb5271de3
3 changed files with 108 additions and 53 deletions
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63
subcmds/gitc_init.py
View File

@@ -18,15 +18,10 @@ import os
import shutil
import sys
import git_command
import gitc_utils
from subcmds import init
GITC_MANIFEST_DIR = '/usr/local/google/gitc'
GITC_FS_ROOT_DIR = '/gitc/sha/rw'
NUM_BATCH_RETRIEVE_REVISIONID = 300
class GitcInit(init.Init):
common = True
helpSummary = "Initialize a GITC Client."
@@ -65,59 +60,21 @@ use for this GITC client.
if not opt.gitc_client:
print('fatal: gitc client (-c) is required', file=sys.stderr)
sys.exit(1)
self.client_dir = os.path.join(GITC_MANIFEST_DIR, opt.gitc_client)
if not os.path.exists(GITC_MANIFEST_DIR):
os.makedirs(GITC_MANIFEST_DIR)
self.client_dir = os.path.join(gitc_utils.GITC_MANIFEST_DIR,
opt.gitc_client)
if not os.path.exists(gitc_utils.GITC_MANIFEST_DIR):
os.makedirs(gitc_utils.GITC_MANIFEST_DIR)
if not os.path.exists(self.client_dir):
os.mkdir(self.client_dir)
super(GitcInit, self).Execute(opt, args)
# Make the destination manifest file a symlink to repo's so both repo and
# GITC refer to the same manifest.
if opt.manifest_file:
if not os.path.exists(opt.manifest_file):
print('fatal: Specified manifest file %s does not exist.' %
opt.manifest_file)
sys.exit(1)
shutil.copyfile(opt.manifest_file,
os.path.join(self.client_dir, '.manifest'))
else:
self._GenerateGITCManifest()
self.manifest.Override(opt.manifest_file)
gitc_utils.generate_gitc_manifest(self.client_dir, self.manifest)
print('Please run `cd %s` to view your GITC client.' %
os.path.join(GITC_FS_ROOT_DIR, opt.gitc_client))
def _SetProjectRevisions(self, projects, branch):
"""Sets the revisionExpr for a list of projects.
Because of the limit of open file descriptors allowed, length of projects
should not be overly large. Recommend calling this function multiple times
with each call not exceeding NUM_BATCH_RETRIEVE_REVISIONID projects.
@param projects: List of project objects to set the revionExpr for.
@param branch: The remote branch to retrieve the SHA from. If branch is
None, 'HEAD' is used.
"""
project_gitcmds = [(
project, git_command.GitCommand(None,
['ls-remote',
project.remote.url,
branch], capture_stdout=True))
for project in projects]
for proj, gitcmd in project_gitcmds:
if gitcmd.Wait():
print('FATAL: Failed to retrieve revisionID for %s' % project)
sys.exit(1)
proj.revisionExpr = gitcmd.stdout.split('\t')[0]
def _GenerateGITCManifest(self):
"""Generate a manifest for shafsd to use for this GITC client."""
print('Generating GITC Manifest by fetching revision SHAs for each '
'project.')
manifest = self.manifest
project_gitcmd_dict = {}
index = 0
while index < len(manifest.projects):
self._SetProjectRevisions(
manifest.projects[index:(index+NUM_BATCH_RETRIEVE_REVISIONID)],
manifest.default.revisionExpr)
index += NUM_BATCH_RETRIEVE_REVISIONID
# Save the manifest.
with open(os.path.join(self.client_dir, '.manifest'), 'w') as f:
manifest.Save(f)
os.path.join(gitc_utils.GITC_FS_ROOT_DIR, opt.gitc_client))

29
subcmds/sync.py
View File

@@ -58,6 +58,7 @@ except ImportError:
from git_command import GIT, git_require
from git_refs import R_HEADS, HEAD
import gitc_utils
from project import Project
from project import RemoteSpec
from command import Command, MirrorSafeCommand
@@ -184,6 +185,9 @@ later is required to fix a server side protocol bug.
help="overwrite an existing git directory if it needs to "
"point to a different object directory. WARNING: this "
"may cause loss of data")
p.add_option('--force-gitc',
dest='force_gitc', action='store_true',
help="actually sync sources in the gitc client directory.")
p.add_option('-l', '--local-only',
dest='local_only', action='store_true',
help="only update working tree, don't fetch")
@@ -526,6 +530,25 @@ later is required to fix a server side protocol bug.
print('error: both -u and -p must be given', file=sys.stderr)
sys.exit(1)
cwd = os.getcwd()
if cwd.startswith(gitc_utils.GITC_MANIFEST_DIR) and not opt.force_gitc:
print('WARNING this will pull all the sources like a normal repo sync.\n'
'\nIf you want to update your GITC Client View please rerun this '
'command in \n%s%s.\nOr if you actually want to pull the sources, '
'rerun with --force-gitc.' %
(gitc_utils.GITC_FS_ROOT_DIR,
cwd.split(gitc_utils.GITC_MANIFEST_DIR)[1]))
sys.exit(1)
self._gitc_sync = False
if cwd.startswith(gitc_utils.GITC_FS_ROOT_DIR):
self._gitc_sync = True
self._client_name = cwd.split(gitc_utils.GITC_FS_ROOT_DIR)[1].split(
'/')[0]
self._client_dir = os.path.join(gitc_utils.GITC_MANIFEST_DIR,
self._client_name)
print('Updating GITC client: %s' % self._client_name)
if opt.manifest_name:
self.manifest.Override(opt.manifest_name)
@@ -642,6 +665,12 @@ later is required to fix a server side protocol bug.
if opt.repo_upgraded:
_PostRepoUpgrade(self.manifest, quiet=opt.quiet)
if self._gitc_sync:
gitc_utils.generate_gitc_manifest(self._client_dir, self.manifest)
print('GITC client successfully synced.')
return
if not opt.local_only:
mp.Sync_NetworkHalf(quiet=opt.quiet,
current_branch_only=opt.current_branch_only,