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1efc2b4a01
Adds the new gitc-init command to set up a GITC client. Gitc-init sets up the client directory and calls repo init within it. Once the repo is initialized, then generates a GITC manifest file by using git ls-remote on each project and retrieving the HEAD SHA to use as the revision attribute. Gitc-init inherits from and has all the options as repo init. Change-Id: Icd7e47e90eab752a77de7c80ebc98cfe16bf6de3
124 lines
4.5 KiB
Python
124 lines
4.5 KiB
Python
#
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# Copyright (C) 2015 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from __future__ import print_function
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import os
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import shutil
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import sys
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import git_command
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from subcmds import init
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GITC_MANIFEST_DIR = '/usr/local/google/gitc'
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GITC_FS_ROOT_DIR = '/gitc/sha/rw'
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NUM_BATCH_RETRIEVE_REVISIONID = 300
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class GitcInit(init.Init):
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common = True
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helpSummary = "Initialize a GITC Client."
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helpUsage = """
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%prog [options] [client name]
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"""
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helpDescription = """
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The '%prog' command is ran to initialize a new GITC client for use
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with the GITC file system.
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This command will setup the client directory, initialize repo, just
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like repo init does, and then downloads the manifest collection
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and installs in in the .repo/directory of the GITC client.
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Once this is done, a GITC manifest is generated by pulling the HEAD
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SHA for each project and generates the properly formatted XML file
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and installs it as .manifest in the GITC client directory.
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The -c argument is required to specify the GITC client name.
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The optional -f argument can be used to specify the manifest file to
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use for this GITC client.
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"""
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def _Options(self, p):
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super(GitcInit, self)._Options(p)
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g = p.add_option_group('GITC options')
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g.add_option('-f', '--manifest-file',
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dest='manifest_file',
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help='Optional manifest file to use for this GITC client.')
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g.add_option('-c', '--gitc-client',
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dest='gitc_client',
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help='The name for the new gitc_client instance.')
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def Execute(self, opt, args):
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if not opt.gitc_client:
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print('fatal: gitc client (-c) is required', file=sys.stderr)
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sys.exit(1)
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self.client_dir = os.path.join(GITC_MANIFEST_DIR, opt.gitc_client)
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if not os.path.exists(GITC_MANIFEST_DIR):
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os.makedirs(GITC_MANIFEST_DIR)
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if not os.path.exists(self.client_dir):
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os.mkdir(self.client_dir)
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super(GitcInit, self).Execute(opt, args)
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if opt.manifest_file:
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if not os.path.exists(opt.manifest_file):
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print('fatal: Specified manifest file %s does not exist.' %
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opt.manifest_file)
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sys.exit(1)
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shutil.copyfile(opt.manifest_file,
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os.path.join(self.client_dir, '.manifest'))
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else:
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self._GenerateGITCManifest()
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print('Please run `cd %s` to view your GITC client.' %
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os.path.join(GITC_FS_ROOT_DIR, opt.gitc_client))
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def _SetProjectRevisions(self, projects, branch):
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"""Sets the revisionExpr for a list of projects.
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Because of the limit of open file descriptors allowed, length of projects
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should not be overly large. Recommend calling this function multiple times
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with each call not exceeding NUM_BATCH_RETRIEVE_REVISIONID projects.
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@param projects: List of project objects to set the revionExpr for.
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@param branch: The remote branch to retrieve the SHA from. If branch is
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None, 'HEAD' is used.
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"""
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project_gitcmds = [(
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project, git_command.GitCommand(None,
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['ls-remote',
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project.remote.url,
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branch], capture_stdout=True))
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for project in projects]
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for proj, gitcmd in project_gitcmds:
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if gitcmd.Wait():
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print('FATAL: Failed to retrieve revisionID for %s' % project)
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sys.exit(1)
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proj.revisionExpr = gitcmd.stdout.split('\t')[0]
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def _GenerateGITCManifest(self):
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"""Generate a manifest for shafsd to use for this GITC client."""
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print('Generating GITC Manifest by fetching revision SHAs for each '
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'project.')
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manifest = self.manifest
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project_gitcmd_dict = {}
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index = 0
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while index < len(manifest.projects):
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self._SetProjectRevisions(
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manifest.projects[index:(index+NUM_BATCH_RETRIEVE_REVISIONID)],
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manifest.default.revisionExpr)
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index += NUM_BATCH_RETRIEVE_REVISIONID
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# Save the manifest.
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with open(os.path.join(self.client_dir, '.manifest'), 'w') as f:
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manifest.Save(f)
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