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+#!/usr/bin/env python
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+#
+# Copyright 2011 Intel Corporation
+# Authored-by: Yu Ke <ke.yu@intel.com>
+# Paul Eggleton <paul.eggleton@intel.com>
+# Richard Purdie <richard.purdie@intel.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import os, sys
+import optparse
+import logging
+import subprocess
+import ConfigParser
+
+__version__ = "0.1.0"
+
+def logger_create():
+ logger = logging.getLogger("")
+ loggerhandler = logging.StreamHandler()
+ loggerhandler.setFormatter(logging.Formatter("[%(asctime)s] %(message)s","%H:%M:%S"))
+ logger.addHandler(loggerhandler)
+ logger.setLevel(logging.INFO)
+ return logger
+
+logger = logger_create()
+
+class Configuration(object):
+ """
+ Manages the configuration
+
+ A valid conf looks like:
+
+# component name
+[bitbake]
+
+# mandatory options
+
+# git upstream uri
+src_uri = git://git.openembedded.org/bitbake
+
+# the directory to clone the component repo
+local_repo_dir = ~/src/bitbake
+
+# the relative dir to commit the repo patch
+# use "." if it is root dir
+dest_dir = bitbake
+
+# the updated revision last time.
+# leave it empty if no commit updated yet, and then the tool
+# will start from the first commit
+last_revision =
+
+# optional options
+
+# file_filter: only include the interested file
+# file_filter = [path] [path] ...
+# example:
+# file_filter = src/ : only include the subdir src
+# file_filter = src/*.c : only include the src *.c file
+# file_filter = src/main.c src/Makefile.am : only include these two files
+
+[oe-core]
+src_uri = git://git.openembedded.org/openembedded-core
+local_repo_dir = ~/src/oecore
+dest_dir = .
+last_revision =
+
+# more components ...
+
+ """
+ def __init__(self, options):
+ for key, val in options.__dict__.items():
+ setattr(self, key, val)
+ self.parser = ConfigParser.ConfigParser()
+ self.parser.readfp(open(self.conffile))
+ self.repos = {}
+ for repo in self.parser.sections():
+ self.repos[repo] = {}
+ for (name, value) in self.parser.items(repo):
+ self.repos[repo][name] = value
+
+ def update(self, repo, option, value):
+ self.parser.set(repo, option, value)
+ self.parser.write(open(self.conffile, "w"))
+
+ def sanity_check(self):
+ required_options=["src_uri", "local_repo_dir", "dest_dir", "last_revision"]
+ msg = ""
+ for name in self.repos:
+ for option in required_options:
+ if option not in self.repos[name]:
+ msg = "%s\nOption %s is not defined for component %s" %(msg, option, name)
+ if msg != "":
+ logger.error("configuration file %s has the following error:%s" % (self.conffile,msg))
+ sys.exit(1)
+
+ # filterdiff is required by action_splitpatch, so check its availability
+ if subprocess.call("which filterdiff &>/dev/null", shell=True) != 0:
+ logger.error("ERROR: patchutils package is missing, please install it (e.g. # apt-get install patchutils)")
+ sys.exit(1)
+
+def runcmd(cmd,destdir=None):
+ """
+ execute command, raise CalledProcessError if fail
+ return output if succeed
+ """
+ logger.debug("run cmd '%s' in %s" % (cmd, os.getcwd() if destdir is None else destdir))
+ out = os.tmpfile()
+ try:
+ subprocess.check_call(cmd, stdout=out, stderr=out, cwd=destdir, shell=True)
+ except subprocess.CalledProcessError,e:
+ out.seek(0)
+ logger.error("%s" % out.read())
+ raise e
+
+ out.seek(0)
+ output = out.read()
+ logger.debug("output: %s" % output )
+ return output
+
+def action_init(conf, args):
+ """
+ Clone component repositories
+ Check git initialised and working tree is clean
+ """
+ for name in conf.repos:
+ ldir = conf.repos[name]['local_repo_dir']
+ if not os.path.exists(ldir):
+ logger.info("cloning %s to %s" %(conf.repos[name]['src_uri'], ldir))
+ subprocess.check_call("git clone %s %s" % (conf.repos[name]['src_uri'], ldir), shell=True)
+ if not os.path.exists(".git"):
+ runcmd("git init")
+
+def check_repo_clean(repodir):
+ """
+ check if the repo is clean
+ exit if repo is dirty
+ """
+ try:
+ runcmd("git diff --quiet", repodir)
+ #TODO: also check the index using "git diff --cached"
+ # but this will fail in just initialized git repo
+ # so need figure out a way
+ except:
+ logger.error("git repo %s is dirty, please fix it first", repodir)
+ sys.exit(1)
+
+def action_update(conf, args):
+ """
+ update the component repo
+ generate the patch list
+ apply the generated patches
+ """
+ # make sure all repos are clean
+ for name in conf.repos:
+ check_repo_clean(conf.repos[name]['local_repo_dir'])
+ check_repo_clean(os.getcwd())
+
+ import uuid
+ patch_dir = "patch-%s" % uuid.uuid4()
+ os.mkdir(patch_dir)
+
+ for name in conf.repos:
+ repo = conf.repos[name]
+ ldir = repo['local_repo_dir']
+ dest_dir = repo['dest_dir']
+ repo_patch_dir = os.path.join(os.getcwd(), patch_dir, name)
+
+ # Step 1: update the component repo
+ logger.info("git pull for component repo %s in %s ..." % (name, ldir))
+ output=runcmd("git pull", ldir)
+ logger.info(output)
+
+ # Step 2: generate the patch list and store to patch dir
+ logger.info("generating patches for %s" % name)
+ if dest_dir != ".":
+ prefix = "--src-prefix=a/%s/ --dst-prefix=b/%s/" % (dest_dir, dest_dir)
+ else:
+ prefix = ""
+ if repo['last_revision'] == "":
+ logger.info("Warning: last_revision of component %s is not set, so start from the first commit" % name)
+ patch_cmd_range = "--root master"
+ rev_cmd_range = "master"
+ else:
+ patch_cmd_range = "%s..master" % repo['last_revision']
+ rev_cmd_range = "%s..master" % repo['last_revision']
+
+ file_filter = repo.get('file_filter',"")
+
+ patch_cmd = "git format-patch -N %s --output-directory %s %s -- %s" % \
+ (prefix,repo_patch_dir, patch_cmd_range, file_filter)
+ output = runcmd(patch_cmd, ldir)
+ logger.debug("generated patch set:\n%s" % output)
+ patchlist = output.splitlines()
+
+ rev_cmd = 'git log --pretty=format:"%H" ' + rev_cmd_range
+ revlist = runcmd(rev_cmd, ldir).splitlines()
+
+ # Step 3: Call repo specific hook to adjust patch
+ if 'hook' in repo:
+ # hook parameter is: ./hook patchpath revision reponame
+ count=len(revlist)-1
+ for patch in patchlist:
+ runcmd("%s %s %s %s" % (repo['hook'], patch, revlist[count], name))
+ count=count-1
+
+ # Step 4: write patch list and revision list to file, for user to edit later
+ patchlist_file = os.path.join(os.getcwd(), patch_dir, "patchlist-%s" % name)
+ repo['patchlist'] = patchlist_file
+ f = open(patchlist_file, 'w')
+ count=len(revlist)-1
+ for patch in patchlist:
+ f.write("%s %s\n" % (patch, revlist[count]))
+ count=count-1
+ f.close()
+
+ # Step 5: invoke bash for user to edit patch and patch list
+ if conf.interactive:
+ print 'Edit the patch and patch list in %s\n' \
+ 'For example, remove the unwanted patch entry from patchlist-*, so that it will be not applied later\n' \
+ 'After finish, press following command to continue\n' \
+ ' exit 0 -- exit and continue to apply the patch\n' \
+ ' exit 1 -- abort and not apply patch\n' % patch_dir
+ ret = subprocess.call(["bash"], cwd=patch_dir)
+ if ret != 0:
+ print "Abort without applying patch"
+ sys.exit(0)
+
+ # Step 6: apply the generated and revised patch
+ action_apply_patch(conf, args)
+ runcmd("rm -rf %s" % patch_dir)
+
+def action_apply_patch(conf, args):
+ """
+ apply the generated patch list to combo repo
+ """
+ for name in conf.repos:
+ repo = conf.repos[name]
+ lastrev = repo["last_revision"]
+ for line in open(repo['patchlist']):
+ patchfile = line.split()[0]
+ lastrev = line.split()[1]
+ cmd = "git am -s -p1 %s" % patchfile
+ logger.info("Apply %s" % patchfile )
+ try:
+ runcmd(cmd)
+ except subprocess.CalledProcessError:
+ logger.info('"git am --abort" is executed to cleanup repo')
+ runcmd("git am --abort")
+ logger.error('"%s" failed' % cmd)
+ logger.info("please manually apply patch %s" % patchfile)
+ logger.info("After applying, run this tool again to apply the rest patches")
+ conf.update(name, "last_revision", lastrev)
+ sys.exit(0)
+ conf.update(name, "last_revision", lastrev)
+
+def action_splitpatch(conf, args):
+ """
+ generate the commit patch and
+ split the patch per repo
+ """
+ logger.debug("action_splitpatch")
+ if len(args) > 1:
+ commit = args[1]
+ else:
+ commit = "HEAD"
+ patchdir = "splitpatch-%s" % commit
+ if not os.path.exists(patchdir):
+ os.mkdir(patchdir)
+
+ # filerange_root is for the repo whose dest_dir is root "."
+ # and it should be specified by excluding all other repo dest dir
+ # like "-x repo1 -x repo2 -x repo3 ..."
+ filerange_root = ""
+ for name in conf.repos:
+ dest_dir = conf.repos[name]['dest_dir']
+ if dest_dir != ".":
+ filerange_root = '%s -x "%s/*"' % (filerange_root, dest_dir)
+
+ for name in conf.repos:
+ dest_dir = conf.repos[name]['dest_dir']
+ patch_filename = "%s/%s.patch" % (patchdir, name)
+ if dest_dir == ".":
+ cmd = "git format-patch -n1 --stdout %s^..%s | filterdiff -p1 %s > %s" % (commit, commit, filerange_root, patch_filename)
+ else:
+ cmd = "git format-patch --no-prefix -n1 --stdout %s^..%s -- %s > %s" % (commit, commit, dest_dir, patch_filename)
+ runcmd(cmd)
+ # Detect empty patches (including those produced by filterdiff above
+ # that contain only preamble text)
+ if os.path.getsize(patch_filename) == 0 or runcmd("filterdiff %s" % patch_filename) == "":
+ os.remove(patch_filename)
+ logger.info("(skipping %s - no changes)", name)
+ else:
+ logger.info(patch_filename)
+
+def action_error(conf, args):
+ logger.info("invalid action %s" % args[0])
+
+actions = {
+ "init": action_init,
+ "update": action_update,
+ "splitpatch": action_splitpatch,
+}
+
+def main():
+ parser = optparse.OptionParser(
+ version = "Combo Layer Repo Tool version %s" % __version__,
+ usage = """%prog [options] action
+
+Create and update a combination layer repository from multiple component repositories.
+
+Action:
+ init initialise the combo layer repo
+ update get patches from component repos and apply them to the combo repo
+ splitpatch [commit] generate commit patch and split per component, default commit is HEAD""")
+
+ parser.add_option("-c", "--conf", help = "specify the config file. default is conf/combolayer.conf",
+ action = "store", dest = "conffile", default = "combo-layer.conf")
+
+ parser.add_option("-i", "--interactive", help = "interactive mode, user can edit the patch list and patches",
+ action = "store_true", dest = "interactive", default = False)
+
+ parser.add_option("-D", "--debug", help = "output debug information",
+ action = "store_true", dest = "debug", default = False)
+
+ options, args = parser.parse_args(sys.argv)
+
+ # Dispatch to action handler
+ if len(args) == 1:
+ logger.error("No action specified, exiting")
+ parser.print_help()
+ elif args[1] not in actions:
+ logger.error("Unsupported action %s, exiting\n" % (args[1]))
+ parser.print_help()
+ elif not os.path.exists(options.conffile):
+ logger.error("No valid config file, exiting\n")
+ parser.print_help()
+ else:
+ if options.debug:
+ logger.setLevel(logging.DEBUG)
+ confdata = Configuration(options)
+ confdata.sanity_check()
+ actions.get(args[1], action_error)(confdata, args[1:])
+
+if __name__ == "__main__":
+ try:
+ ret = main()
+ except Exception:
+ ret = 1
+ import traceback
+ traceback.print_exc(5)
+ sys.exit(ret)