| #!/usr/bin/env python3 |
| # 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 fnmatch |
| import os, sys |
| import optparse |
| import logging |
| import subprocess |
| import tempfile |
| import configparser |
| import re |
| import copy |
| import pipes |
| import shutil |
| from collections import OrderedDict |
| from string import Template |
| from functools import reduce |
| |
| __version__ = "0.2.1" |
| |
| 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() |
| |
| def get_current_branch(repodir=None): |
| try: |
| if not os.path.exists(os.path.join(repodir if repodir else '', ".git")): |
| # Repo not created yet (i.e. during init) so just assume master |
| return "master" |
| branchname = runcmd("git symbolic-ref HEAD 2>/dev/null", repodir).strip() |
| if branchname.startswith("refs/heads/"): |
| branchname = branchname[11:] |
| return branchname |
| except subprocess.CalledProcessError: |
| return "" |
| |
| class Configuration(object): |
| """ |
| Manages the configuration |
| |
| For an example config file, see combo-layer.conf.example |
| |
| """ |
| def __init__(self, options): |
| for key, val in options.__dict__.items(): |
| setattr(self, key, val) |
| |
| def readsection(parser, section, repo): |
| for (name, value) in parser.items(section): |
| if value.startswith("@"): |
| self.repos[repo][name] = eval(value.strip("@")) |
| else: |
| # Apply special type transformations for some properties. |
| # Type matches the RawConfigParser.get*() methods. |
| types = {'signoff': 'boolean', 'update': 'boolean', 'history': 'boolean'} |
| if name in types: |
| value = getattr(parser, 'get' + types[name])(section, name) |
| self.repos[repo][name] = value |
| |
| def readglobalsection(parser, section): |
| for (name, value) in parser.items(section): |
| if name == "commit_msg": |
| self.commit_msg_template = value |
| |
| logger.debug("Loading config file %s" % self.conffile) |
| self.parser = configparser.ConfigParser() |
| with open(self.conffile) as f: |
| self.parser.readfp(f) |
| |
| # initialize default values |
| self.commit_msg_template = "Automatic commit to update last_revision" |
| |
| self.repos = {} |
| for repo in self.parser.sections(): |
| if repo == "combo-layer-settings": |
| # special handling for global settings |
| readglobalsection(self.parser, repo) |
| else: |
| self.repos[repo] = {} |
| readsection(self.parser, repo, repo) |
| |
| # Load local configuration, if available |
| self.localconffile = None |
| self.localparser = None |
| self.combobranch = None |
| if self.conffile.endswith('.conf'): |
| lcfile = self.conffile.replace('.conf', '-local.conf') |
| if os.path.exists(lcfile): |
| # Read combo layer branch |
| self.combobranch = get_current_branch() |
| logger.debug("Combo layer branch is %s" % self.combobranch) |
| |
| self.localconffile = lcfile |
| logger.debug("Loading local config file %s" % self.localconffile) |
| self.localparser = configparser.ConfigParser() |
| with open(self.localconffile) as f: |
| self.localparser.readfp(f) |
| |
| for section in self.localparser.sections(): |
| if '|' in section: |
| sectionvals = section.split('|') |
| repo = sectionvals[0] |
| if sectionvals[1] != self.combobranch: |
| continue |
| else: |
| repo = section |
| if repo in self.repos: |
| readsection(self.localparser, section, repo) |
| |
| def update(self, repo, option, value, initmode=False): |
| # If the main config has the option already, that is what we |
| # are expected to modify. |
| if self.localparser and not self.parser.has_option(repo, option): |
| parser = self.localparser |
| section = "%s|%s" % (repo, self.combobranch) |
| conffile = self.localconffile |
| if initmode and not parser.has_section(section): |
| parser.add_section(section) |
| else: |
| parser = self.parser |
| section = repo |
| conffile = self.conffile |
| parser.set(section, option, value) |
| with open(conffile, "w") as f: |
| parser.write(f) |
| self.repos[repo][option] = value |
| |
| def sanity_check(self, initmode=False): |
| required_options=["src_uri", "local_repo_dir", "dest_dir", "last_revision"] |
| if initmode: |
| required_options.remove("last_revision") |
| msg = "" |
| missing_options = [] |
| 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) |
| missing_options.append(option) |
| # Sanitize dest_dir so that we do not have to deal with edge cases |
| # (unset, empty string, double slashes) in the rest of the code. |
| # It not being set will still be flagged as error because it is |
| # listed as required option above; that could be changed now. |
| dest_dir = os.path.normpath(self.repos[name].get("dest_dir", ".")) |
| self.repos[name]["dest_dir"] = "." if not dest_dir else dest_dir |
| if msg != "": |
| logger.error("configuration file %s has the following error: %s" % (self.conffile,msg)) |
| if self.localconffile and 'last_revision' in missing_options: |
| logger.error("local configuration file %s may be missing configuration for combo branch %s" % (self.localconffile, self.combobranch)) |
| sys.exit(1) |
| |
| # filterdiff is required by action_splitpatch, so check its availability |
| if subprocess.call("which filterdiff > /dev/null 2>&1", 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,printerr=True,out=None,env=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)) |
| if not out: |
| out = tempfile.TemporaryFile() |
| err = out |
| else: |
| err = tempfile.TemporaryFile() |
| try: |
| subprocess.check_call(cmd, stdout=out, stderr=err, cwd=destdir, shell=isinstance(cmd, str), env=env or os.environ) |
| except subprocess.CalledProcessError as e: |
| err.seek(0) |
| if printerr: |
| logger.error("%s" % err.read()) |
| raise e |
| |
| err.seek(0) |
| output = err.read().decode('utf-8') |
| logger.debug("output: %s" % output.replace(chr(0), '\\0')) |
| return output |
| |
| def action_init(conf, args): |
| """ |
| Clone component repositories |
| Check git is initialised; if not, copy initial data from component repos |
| """ |
| 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") |
| if conf.history: |
| # Need a common ref for all trees. |
| runcmd('git commit -m "initial empty commit" --allow-empty') |
| startrev = runcmd('git rev-parse master').strip() |
| |
| for name in conf.repos: |
| repo = conf.repos[name] |
| ldir = repo['local_repo_dir'] |
| branch = repo.get('branch', "master") |
| lastrev = repo.get('last_revision', None) |
| if lastrev and lastrev != "HEAD": |
| initialrev = lastrev |
| if branch: |
| if not check_rev_branch(name, ldir, lastrev, branch): |
| sys.exit(1) |
| logger.info("Copying data from %s at specified revision %s..." % (name, lastrev)) |
| else: |
| lastrev = None |
| initialrev = branch |
| logger.info("Copying data from %s..." % name) |
| # Sanity check initialrev and turn it into hash (required for copying history, |
| # because resolving a name ref only works in the component repo). |
| rev = runcmd('git rev-parse %s' % initialrev, ldir).strip() |
| if rev != initialrev: |
| try: |
| refs = runcmd('git show-ref -s %s' % initialrev, ldir).split('\n') |
| if len(set(refs)) > 1: |
| # Happens for example when configured to track |
| # "master" and there is a refs/heads/master. The |
| # traditional behavior from "git archive" (preserved |
| # here) it to choose the first one. This might not be |
| # intended, so at least warn about it. |
| logger.warn("%s: initial revision '%s' not unique, picking result of rev-parse = %s" % |
| (name, initialrev, refs[0])) |
| initialrev = rev |
| except: |
| # show-ref fails for hashes. Skip the sanity warning in that case. |
| pass |
| initialrev = rev |
| dest_dir = repo['dest_dir'] |
| if dest_dir != ".": |
| extract_dir = os.path.join(os.getcwd(), dest_dir) |
| if not os.path.exists(extract_dir): |
| os.makedirs(extract_dir) |
| else: |
| extract_dir = os.getcwd() |
| file_filter = repo.get('file_filter', "") |
| exclude_patterns = repo.get('file_exclude', '').split() |
| def copy_selected_files(initialrev, extract_dir, file_filter, exclude_patterns, ldir, |
| subdir=""): |
| # When working inside a filtered branch which had the |
| # files already moved, we need to prepend the |
| # subdirectory to all filters, otherwise they would |
| # not match. |
| if subdir == '.': |
| subdir = '' |
| elif subdir: |
| subdir = os.path.normpath(subdir) |
| file_filter = ' '.join([subdir + '/' + x for x in file_filter.split()]) |
| exclude_patterns = [subdir + '/' + x for x in exclude_patterns] |
| # To handle both cases, we cd into the target |
| # directory and optionally tell tar to strip the path |
| # prefix when the files were already moved. |
| subdir_components = len(subdir.split(os.path.sep)) if subdir else 0 |
| strip=('--strip-components=%d' % subdir_components) if subdir else '' |
| # TODO: file_filter wild cards do not work (and haven't worked before either), because |
| # a) GNU tar requires a --wildcards parameter before turning on wild card matching. |
| # b) The semantic is not as intendend (src/*.c also matches src/foo/bar.c, |
| # in contrast to the other use of file_filter as parameter of "git archive" |
| # where it only matches .c files directly in src). |
| files = runcmd("git archive %s %s | tar -x -v %s -C %s %s" % |
| (initialrev, subdir, |
| strip, extract_dir, file_filter), |
| ldir) |
| if exclude_patterns: |
| # Implement file removal by letting tar create the |
| # file and then deleting it in the file system |
| # again. Uses the list of files created by tar (easier |
| # than walking the tree). |
| for file in files.split('\n'): |
| for pattern in exclude_patterns: |
| if fnmatch.fnmatch(file, pattern): |
| os.unlink(os.path.join(*([extract_dir] + ['..'] * subdir_components + [file]))) |
| break |
| |
| if not conf.history: |
| copy_selected_files(initialrev, extract_dir, file_filter, exclude_patterns, ldir) |
| else: |
| # First fetch remote history into local repository. |
| # We need a ref for that, so ensure that there is one. |
| refname = "combo-layer-init-%s" % name |
| runcmd("git branch -f %s %s" % (refname, initialrev), ldir) |
| runcmd("git fetch %s %s" % (ldir, refname)) |
| runcmd("git branch -D %s" % refname, ldir) |
| # Make that the head revision. |
| runcmd("git checkout -b %s %s" % (name, initialrev)) |
| # Optional: cut the history by replacing the given |
| # start point(s) with commits providing the same |
| # content (aka tree), but with commit information that |
| # makes it clear that this is an artifically created |
| # commit and nothing the original authors had anything |
| # to do with. |
| since_rev = repo.get('since_revision', '') |
| if since_rev: |
| committer = runcmd('git var GIT_AUTHOR_IDENT').strip() |
| # Same time stamp, no name. |
| author = re.sub('.* (\d+ [+-]\d+)', r'unknown <unknown> \1', committer) |
| logger.info('author %s' % author) |
| for rev in since_rev.split(): |
| # Resolve in component repo... |
| rev = runcmd('git log --oneline --no-abbrev-commit -n1 %s' % rev, ldir).split()[0] |
| # ... and then get the tree in current |
| # one. The commit should be in both repos with |
| # the same tree, but better check here. |
| tree = runcmd('git show -s --pretty=format:%%T %s' % rev).strip() |
| with tempfile.NamedTemporaryFile() as editor: |
| editor.write('''cat >$1 <<EOF |
| tree %s |
| author %s |
| committer %s |
| |
| %s: squashed import of component |
| |
| This commit copies the entire set of files as found in |
| %s %s |
| |
| For more information about previous commits, see the |
| upstream repository. |
| |
| Commit created by combo-layer. |
| EOF |
| ''' % (tree, author, committer, name, name, since_rev)) |
| editor.flush() |
| os.environ['GIT_EDITOR'] = 'sh %s' % editor.name |
| runcmd('git replace --edit %s' % rev) |
| |
| # Optional: rewrite history to change commit messages or to move files. |
| if 'hook' in repo or dest_dir != ".": |
| filter_branch = ['git', 'filter-branch', '--force'] |
| with tempfile.NamedTemporaryFile() as hookwrapper: |
| if 'hook' in repo: |
| # Create a shell script wrapper around the original hook that |
| # can be used by git filter-branch. Hook may or may not have |
| # an absolute path. |
| hook = repo['hook'] |
| hook = os.path.join(os.path.dirname(conf.conffile), '..', hook) |
| # The wrappers turns the commit message |
| # from stdin into a fake patch header. |
| # This is good enough for changing Subject |
| # and commit msg body with normal |
| # combo-layer hooks. |
| hookwrapper.write('''set -e |
| tmpname=$(mktemp) |
| trap "rm $tmpname" EXIT |
| echo -n 'Subject: [PATCH] ' >>$tmpname |
| cat >>$tmpname |
| if ! [ $(tail -c 1 $tmpname | od -A n -t x1) == '0a' ]; then |
| echo >>$tmpname |
| fi |
| echo '---' >>$tmpname |
| %s $tmpname $GIT_COMMIT %s |
| tail -c +18 $tmpname | head -c -4 |
| ''' % (hook, name)) |
| hookwrapper.flush() |
| filter_branch.extend(['--msg-filter', 'bash %s' % hookwrapper.name]) |
| if dest_dir != ".": |
| parent = os.path.dirname(dest_dir) |
| if not parent: |
| parent = '.' |
| # May run outside of the current directory, so do not assume that .git exists. |
| filter_branch.extend(['--tree-filter', 'mkdir -p .git/tmptree && find . -mindepth 1 -maxdepth 1 ! -name .git -print0 | xargs -0 -I SOURCE mv SOURCE .git/tmptree && mkdir -p %s && mv .git/tmptree %s' % (parent, dest_dir)]) |
| filter_branch.append('HEAD') |
| runcmd(filter_branch) |
| runcmd('git update-ref -d refs/original/refs/heads/%s' % name) |
| repo['rewritten_revision'] = runcmd('git rev-parse HEAD').strip() |
| repo['stripped_revision'] = repo['rewritten_revision'] |
| # Optional filter files: remove everything and re-populate using the normal filtering code. |
| # Override any potential .gitignore. |
| if file_filter or exclude_patterns: |
| runcmd('git rm -rf .') |
| if not os.path.exists(extract_dir): |
| os.makedirs(extract_dir) |
| copy_selected_files('HEAD', extract_dir, file_filter, exclude_patterns, '.', |
| subdir=dest_dir) |
| runcmd('git add --all --force .') |
| if runcmd('git status --porcelain'): |
| # Something to commit. |
| runcmd(['git', 'commit', '-m', |
| '''%s: select file subset |
| |
| Files from the component repository were chosen based on |
| the following filters: |
| file_filter = %s |
| file_exclude = %s''' % (name, file_filter or '<empty>', repo.get('file_exclude', '<empty>'))]) |
| repo['stripped_revision'] = runcmd('git rev-parse HEAD').strip() |
| |
| if not lastrev: |
| lastrev = runcmd('git rev-parse %s' % initialrev, ldir).strip() |
| conf.update(name, "last_revision", lastrev, initmode=True) |
| |
| if not conf.history: |
| runcmd("git add .") |
| else: |
| # Create Octopus merge commit according to http://stackoverflow.com/questions/10874149/git-octopus-merge-with-unrelated-repositoies |
| runcmd('git checkout master') |
| merge = ['git', 'merge', '--no-commit'] |
| for name in conf.repos: |
| repo = conf.repos[name] |
| # Use branch created earlier. |
| merge.append(name) |
| # Root all commits which have no parent in the common |
| # ancestor in the new repository. |
| for start in runcmd('git log --pretty=format:%%H --max-parents=0 %s' % name).split('\n'): |
| runcmd('git replace --graft %s %s' % (start, startrev)) |
| try: |
| runcmd(merge) |
| except Exception as error: |
| logger.info('''Merging component repository history failed, perhaps because of merge conflicts. |
| It may be possible to commit anyway after resolving these conflicts. |
| |
| %s''' % error) |
| # Create MERGE_HEAD and MERGE_MSG. "git merge" itself |
| # does not create MERGE_HEAD in case of a (harmless) failure, |
| # and we want certain auto-generated information in the |
| # commit message for future reference and/or automation. |
| with open('.git/MERGE_HEAD', 'w') as head: |
| with open('.git/MERGE_MSG', 'w') as msg: |
| msg.write('repo: initial import of components\n\n') |
| # head.write('%s\n' % startrev) |
| for name in conf.repos: |
| repo = conf.repos[name] |
| # <upstream ref> <rewritten ref> <rewritten + files removed> |
| msg.write('combo-layer-%s: %s %s %s\n' % (name, |
| repo['last_revision'], |
| repo['rewritten_revision'], |
| repo['stripped_revision'])) |
| rev = runcmd('git rev-parse %s' % name).strip() |
| head.write('%s\n' % rev) |
| |
| if conf.localconffile: |
| localadded = True |
| try: |
| runcmd("git rm --cached %s" % conf.localconffile, printerr=False) |
| except subprocess.CalledProcessError: |
| localadded = False |
| if localadded: |
| localrelpath = os.path.relpath(conf.localconffile) |
| runcmd("grep -q %s .gitignore || echo %s >> .gitignore" % (localrelpath, localrelpath)) |
| runcmd("git add .gitignore") |
| logger.info("Added local configuration file %s to .gitignore", localrelpath) |
| logger.info("Initial combo layer repository data has been created; please make any changes if desired and then use 'git commit' to make the initial commit.") |
| else: |
| logger.info("Repository already initialised, nothing to do.") |
| |
| |
| def check_repo_clean(repodir): |
| """ |
| check if the repo is clean |
| exit if repo is dirty |
| """ |
| output=runcmd("git status --porcelain", repodir) |
| r = re.compile('\?\? patch-.*/') |
| dirtyout = [item for item in output.splitlines() if not r.match(item)] |
| if dirtyout: |
| logger.error("git repo %s is dirty, please fix it first", repodir) |
| sys.exit(1) |
| |
| def check_patch(patchfile): |
| f = open(patchfile, 'rb') |
| ln = f.readline() |
| of = None |
| in_patch = False |
| beyond_msg = False |
| pre_buf = b'' |
| while ln: |
| if not beyond_msg: |
| if ln == b'---\n': |
| if not of: |
| break |
| in_patch = False |
| beyond_msg = True |
| elif ln.startswith(b'--- '): |
| # We have a diff in the commit message |
| in_patch = True |
| if not of: |
| print('WARNING: %s contains a diff in its commit message, indenting to avoid failure during apply' % patchfile) |
| of = open(patchfile + '.tmp', 'wb') |
| of.write(pre_buf) |
| pre_buf = b'' |
| elif in_patch and not ln[0] in b'+-@ \n\r': |
| in_patch = False |
| if of: |
| if in_patch: |
| of.write(b' ' + ln) |
| else: |
| of.write(ln) |
| else: |
| pre_buf += ln |
| ln = f.readline() |
| f.close() |
| if of: |
| of.close() |
| os.rename(patchfile + '.tmp', patchfile) |
| |
| def drop_to_shell(workdir=None): |
| if not sys.stdin.isatty(): |
| print("Not a TTY so can't drop to shell for resolution, exiting.") |
| return False |
| |
| shell = os.environ.get('SHELL', 'bash') |
| print('Dropping to shell "%s"\n' \ |
| 'When you are finished, run the following to continue:\n' \ |
| ' exit -- continue to apply the patches\n' \ |
| ' exit 1 -- abort\n' % shell); |
| ret = subprocess.call([shell], cwd=workdir) |
| if ret != 0: |
| print("Aborting") |
| return False |
| else: |
| return True |
| |
| def check_rev_branch(component, repodir, rev, branch): |
| try: |
| actualbranch = runcmd("git branch --contains %s" % rev, repodir, printerr=False) |
| except subprocess.CalledProcessError as e: |
| if e.returncode == 129: |
| actualbranch = "" |
| else: |
| raise |
| |
| if not actualbranch: |
| logger.error("%s: specified revision %s is invalid!" % (component, rev)) |
| return False |
| |
| branches = [] |
| branchlist = actualbranch.split("\n") |
| for b in branchlist: |
| branches.append(b.strip().split(' ')[-1]) |
| |
| if branch not in branches: |
| logger.error("%s: specified revision %s is not on specified branch %s!" % (component, rev, branch)) |
| return False |
| return True |
| |
| def get_repos(conf, repo_names): |
| repos = [] |
| for name in repo_names: |
| if name.startswith('-'): |
| break |
| else: |
| repos.append(name) |
| for repo in repos: |
| if not repo in conf.repos: |
| logger.error("Specified component '%s' not found in configuration" % repo) |
| sys.exit(1) |
| |
| if not repos: |
| repos = [ repo for repo in conf.repos if conf.repos[repo].get("update", True) ] |
| |
| return repos |
| |
| def action_pull(conf, args): |
| """ |
| update the component repos only |
| """ |
| repos = get_repos(conf, args[1:]) |
| |
| # make sure all repos are clean |
| for name in repos: |
| check_repo_clean(conf.repos[name]['local_repo_dir']) |
| |
| for name in repos: |
| repo = conf.repos[name] |
| ldir = repo['local_repo_dir'] |
| branch = repo.get('branch', "master") |
| logger.info("update branch %s of component repo %s in %s ..." % (branch, name, ldir)) |
| if not conf.hard_reset: |
| # Try to pull only the configured branch. Beware that this may fail |
| # when the branch is currently unknown (for example, after reconfiguring |
| # combo-layer). In that case we need to fetch everything and try the check out |
| # and pull again. |
| try: |
| runcmd("git checkout %s" % branch, ldir, printerr=False) |
| except subprocess.CalledProcessError: |
| output=runcmd("git fetch", ldir) |
| logger.info(output) |
| runcmd("git checkout %s" % branch, ldir) |
| runcmd("git pull --ff-only", ldir) |
| else: |
| output=runcmd("git pull --ff-only", ldir) |
| logger.info(output) |
| else: |
| output=runcmd("git fetch", ldir) |
| logger.info(output) |
| runcmd("git checkout %s" % branch, ldir) |
| runcmd("git reset --hard FETCH_HEAD", ldir) |
| |
| def action_update(conf, args): |
| """ |
| update the component repos |
| either: |
| generate the patch list |
| apply the generated patches |
| or: |
| re-creates the entire component history and merges them |
| into the current branch with a merge commit |
| """ |
| components = [arg.split(':')[0] for arg in args[1:]] |
| revisions = {} |
| for arg in args[1:]: |
| if ':' in arg: |
| a = arg.split(':', 1) |
| revisions[a[0]] = a[1] |
| repos = get_repos(conf, components) |
| |
| # make sure combo repo is clean |
| check_repo_clean(os.getcwd()) |
| |
| # Check whether we keep the component histories. Must be |
| # set either via --history command line parameter or consistently |
| # in combo-layer.conf. Mixing modes is (currently, and probably |
| # permanently because it would be complicated) not supported. |
| if conf.history: |
| history = True |
| else: |
| history = None |
| for name in repos: |
| repo = conf.repos[name] |
| repo_history = repo.get('history', False) |
| if history is None: |
| history = repo_history |
| elif history != repo_history: |
| logger.error("'history' property is set inconsistently") |
| sys.exit(1) |
| |
| # Step 1: update the component repos |
| if conf.nopull: |
| logger.info("Skipping pull (-n)") |
| else: |
| action_pull(conf, ['arg0'] + components) |
| |
| if history: |
| update_with_history(conf, components, revisions, repos) |
| else: |
| update_with_patches(conf, components, revisions, repos) |
| |
| def update_with_patches(conf, components, revisions, repos): |
| import uuid |
| patch_dir = "patch-%s" % uuid.uuid4() |
| if not os.path.exists(patch_dir): |
| os.mkdir(patch_dir) |
| |
| for name in repos: |
| revision = revisions.get(name, None) |
| repo = conf.repos[name] |
| ldir = repo['local_repo_dir'] |
| dest_dir = repo['dest_dir'] |
| branch = repo.get('branch', "master") |
| repo_patch_dir = os.path.join(os.getcwd(), patch_dir, name) |
| |
| # Step 2: generate the patch list and store to patch dir |
| logger.info("Generating patches from %s..." % name) |
| top_revision = revision or branch |
| if not check_rev_branch(name, ldir, top_revision, branch): |
| sys.exit(1) |
| 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, starting from the first commit" % name) |
| patch_cmd_range = "--root %s" % top_revision |
| rev_cmd_range = top_revision |
| else: |
| if not check_rev_branch(name, ldir, repo['last_revision'], branch): |
| sys.exit(1) |
| patch_cmd_range = "%s..%s" % (repo['last_revision'], top_revision) |
| rev_cmd_range = patch_cmd_range |
| |
| file_filter = repo.get('file_filter',".") |
| |
| # Filter out unwanted files |
| exclude = repo.get('file_exclude', '') |
| if exclude: |
| for path in exclude.split(): |
| p = "%s/%s" % (dest_dir, path) if dest_dir != '.' else path |
| file_filter += " ':!%s'" % p |
| |
| 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 rev-list --no-merges %s -- %s" % (rev_cmd_range, file_filter) |
| 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])) |
| check_patch(os.path.join(patch_dir, patch)) |
| count=count-1 |
| f.close() |
| |
| # Step 5: invoke bash for user to edit patch and patch list |
| if conf.interactive: |
| print('You may now edit the patch and patch list in %s\n' \ |
| 'For example, you can remove unwanted patch entries from patchlist-*, so that they will be not applied later' % patch_dir); |
| if not drop_to_shell(patch_dir): |
| sys.exit(1) |
| |
| # Step 6: apply the generated and revised patch |
| apply_patchlist(conf, repos) |
| runcmd("rm -rf %s" % patch_dir) |
| |
| # Step 7: commit the updated config file if it's being tracked |
| commit_conf_file(conf, components) |
| |
| def conf_commit_msg(conf, components): |
| # create the "components" string |
| component_str = "all components" |
| if len(components) > 0: |
| # otherwise tell which components were actually changed |
| component_str = ", ".join(components) |
| |
| # expand the template with known values |
| template = Template(conf.commit_msg_template) |
| msg = template.substitute(components = component_str) |
| return msg |
| |
| def commit_conf_file(conf, components, commit=True): |
| relpath = os.path.relpath(conf.conffile) |
| try: |
| output = runcmd("git status --porcelain %s" % relpath, printerr=False) |
| except: |
| # Outside the repository |
| output = None |
| if output: |
| if output.lstrip().startswith("M"): |
| logger.info("Committing updated configuration file") |
| if commit: |
| msg = conf_commit_msg(conf, components) |
| runcmd('git commit -m'.split() + [msg, relpath]) |
| else: |
| runcmd('git add %s' % relpath) |
| return True |
| return False |
| |
| def apply_patchlist(conf, repos): |
| """ |
| apply the generated patch list to combo repo |
| """ |
| for name in repos: |
| repo = conf.repos[name] |
| lastrev = repo["last_revision"] |
| prevrev = lastrev |
| |
| # Get non-blank lines from patch list file |
| patchlist = [] |
| if os.path.exists(repo['patchlist']) or not conf.interactive: |
| # Note: we want this to fail here if the file doesn't exist and we're not in |
| # interactive mode since the file should exist in this case |
| with open(repo['patchlist']) as f: |
| for line in f: |
| line = line.rstrip() |
| if line: |
| patchlist.append(line) |
| |
| ldir = conf.repos[name]['local_repo_dir'] |
| branch = conf.repos[name].get('branch', "master") |
| branchrev = runcmd("git rev-parse %s" % branch, ldir).strip() |
| |
| if patchlist: |
| logger.info("Applying patches from %s..." % name) |
| linecount = len(patchlist) |
| i = 1 |
| for line in patchlist: |
| patchfile = line.split()[0] |
| lastrev = line.split()[1] |
| patchdisp = os.path.relpath(patchfile) |
| if os.path.getsize(patchfile) == 0: |
| logger.info("(skipping %d/%d %s - no changes)" % (i, linecount, patchdisp)) |
| else: |
| cmd = "git am --keep-cr %s-p1 %s" % ('-s ' if repo.get('signoff', True) else '', patchfile) |
| logger.info("Applying %d/%d: %s" % (i, linecount, patchdisp)) |
| try: |
| runcmd(cmd) |
| except subprocess.CalledProcessError: |
| logger.info('Running "git am --abort" to cleanup repo') |
| runcmd("git am --abort") |
| logger.error('"%s" failed' % cmd) |
| logger.info("Please manually apply patch %s" % patchdisp) |
| logger.info("Note: if you exit and continue applying without manually applying the patch, it will be skipped") |
| if not drop_to_shell(): |
| if prevrev != repo['last_revision']: |
| conf.update(name, "last_revision", prevrev) |
| sys.exit(1) |
| prevrev = lastrev |
| i += 1 |
| # Once all patches are applied, we should update |
| # last_revision to the branch head instead of the last |
| # applied patch. The two are not necessarily the same when |
| # the last commit is a merge commit or when the patches at |
| # the branch head were intentionally excluded. |
| # |
| # If we do not do that for a merge commit, the next |
| # combo-layer run will only exclude patches reachable from |
| # one of the merged branches and try to re-apply patches |
| # from other branches even though they were already |
| # copied. |
| # |
| # If patches were intentionally excluded, the next run will |
| # present them again instead of skipping over them. This |
| # may or may not be intended, so the code here is conservative |
| # and only addresses the "head is merge commit" case. |
| if lastrev != branchrev and \ |
| len(runcmd("git show --pretty=format:%%P --no-patch %s" % branch, ldir).split()) > 1: |
| lastrev = branchrev |
| else: |
| logger.info("No patches to apply from %s" % name) |
| lastrev = branchrev |
| |
| if lastrev != repo['last_revision']: |
| 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 update_with_history(conf, components, revisions, repos): |
| '''Update all components with full history. |
| |
| Works by importing all commits reachable from a component's |
| current head revision. If those commits are rooted in an already |
| imported commit, their content gets mixed with the content of the |
| combined repo of that commit (new or modified files overwritten, |
| removed files removed). |
| |
| The last commit is an artificial merge commit that merges all the |
| updated components into the combined repository. |
| |
| The HEAD ref only gets updated at the very end. All intermediate work |
| happens in a worktree which will get garbage collected by git eventually |
| after a failure. |
| ''' |
| # Remember current HEAD and what we need to add to it. |
| head = runcmd("git rev-parse HEAD").strip() |
| additional_heads = {} |
| |
| # Track the mapping between original commit and commit in the |
| # combined repo. We do not have to distinguish between components, |
| # because commit hashes are different anyway. Often we can |
| # skip find_revs() entirely (for example, when all new commits |
| # are derived from the last imported revision). |
| # |
| # Using "head" (typically the merge commit) instead of the actual |
| # commit for the component leads to a nicer history in the combined |
| # repo. |
| old2new_revs = {} |
| for name in repos: |
| repo = conf.repos[name] |
| revision = repo['last_revision'] |
| if revision: |
| old2new_revs[revision] = head |
| |
| def add_p(parents): |
| '''Insert -p before each entry.''' |
| parameters = [] |
| for p in parents: |
| parameters.append('-p') |
| parameters.append(p) |
| return parameters |
| |
| # Do all intermediate work with a separate work dir and index, |
| # chosen via env variables (can't use "git worktree", it is too |
| # new). This is useful (no changes to current work tree unless the |
| # update succeeds) and required (otherwise we end up temporarily |
| # removing the combo-layer hooks that we currently use when |
| # importing a new component). |
| # |
| # Not cleaned up after a failure at the moment. |
| wdir = os.path.join(os.getcwd(), ".git", "combo-layer") |
| windex = wdir + ".index" |
| if os.path.isdir(wdir): |
| shutil.rmtree(wdir) |
| os.mkdir(wdir) |
| wenv = copy.deepcopy(os.environ) |
| wenv["GIT_WORK_TREE"] = wdir |
| wenv["GIT_INDEX_FILE"] = windex |
| # This one turned out to be needed in practice. |
| wenv["GIT_OBJECT_DIRECTORY"] = os.path.join(os.getcwd(), ".git", "objects") |
| wargs = {"destdir": wdir, "env": wenv} |
| |
| for name in repos: |
| revision = revisions.get(name, None) |
| repo = conf.repos[name] |
| ldir = repo['local_repo_dir'] |
| dest_dir = repo['dest_dir'] |
| branch = repo.get('branch', "master") |
| hook = repo.get('hook', None) |
| largs = {"destdir": ldir, "env": None} |
| file_include = repo.get('file_filter', '').split() |
| file_include.sort() # make sure that short entries like '.' come first. |
| file_exclude = repo.get('file_exclude', '').split() |
| |
| def include_file(file): |
| if not file_include: |
| # No explicit filter set, include file. |
| return True |
| for filter in file_include: |
| if filter == '.': |
| # Another special case: include current directory and thus all files. |
| return True |
| if os.path.commonprefix((filter, file)) == filter: |
| # Included in directory or direct file match. |
| return True |
| # Check for wildcard match *with* allowing * to match /, i.e. |
| # src/*.c does match src/foobar/*.c. That's not how it is done elsewhere |
| # when passing the filtering to "git archive", but it is unclear what |
| # the intended semantic is (the comment on file_exclude that "append a * wildcard |
| # at the end" to match the full content of a directories implies that |
| # slashes are indeed not special), so here we simply do what's easy to |
| # implement in Python. |
| logger.debug('fnmatch(%s, %s)' % (file, filter)) |
| if fnmatch.fnmatchcase(file, filter): |
| return True |
| return False |
| |
| def exclude_file(file): |
| for filter in file_exclude: |
| if fnmatch.fnmatchcase(file, filter): |
| return True |
| return False |
| |
| def file_filter(files): |
| '''Clean up file list so that only included files remain.''' |
| index = 0 |
| while index < len(files): |
| file = files[index] |
| if not include_file(file) or exclude_file(file): |
| del files[index] |
| else: |
| index += 1 |
| |
| |
| # Generate the revision list. |
| logger.info("Analyzing commits from %s..." % name) |
| top_revision = revision or branch |
| if not check_rev_branch(name, ldir, top_revision, branch): |
| sys.exit(1) |
| |
| last_revision = repo['last_revision'] |
| rev_list_args = "--full-history --sparse --topo-order --reverse" |
| if not last_revision: |
| logger.info("Warning: last_revision of component %s is not set, starting from the first commit" % name) |
| rev_list_args = rev_list_args + ' ' + top_revision |
| else: |
| if not check_rev_branch(name, ldir, last_revision, branch): |
| sys.exit(1) |
| rev_list_args = "%s %s..%s" % (rev_list_args, last_revision, top_revision) |
| |
| # By definition, the current HEAD contains the latest imported |
| # commit of each component. We use that as initial mapping even |
| # though the commits do not match exactly because |
| # a) it always works (in contrast to find_revs, which relies on special |
| # commit messages) |
| # b) it is faster than find_revs, which will only be called on demand |
| # and can be skipped entirely in most cases |
| # c) last but not least, the combined history looks nicer when all |
| # new commits are rooted in the same merge commit |
| old2new_revs[last_revision] = head |
| |
| # We care about all commits (--full-history and --sparse) and |
| # we want reconstruct the topology and thus do not care |
| # about ordering by time (--topo-order). We ask for the ones |
| # we need to import first to be listed first (--reverse). |
| revs = runcmd("git rev-list %s" % rev_list_args, **largs).split() |
| logger.debug("To be imported: %s" % revs) |
| # Now 'revs' contains all revisions reachable from the top revision. |
| # All revisions derived from the 'last_revision' definitely are new, |
| # whereas the others may or may not have been imported before. For |
| # a linear history in the component, that second set will be empty. |
| # To distinguish between them, we also get the shorter list |
| # of revisions starting at the ancestor. |
| if last_revision: |
| ancestor_revs = runcmd("git rev-list --ancestry-path %s" % rev_list_args, **largs).split() |
| else: |
| ancestor_revs = [] |
| logger.debug("Ancestors: %s" % ancestor_revs) |
| |
| # Now import each revision. |
| logger.info("Importing commits from %s..." % name) |
| def import_rev(rev): |
| global scanned_revs |
| |
| # If it is part of the new commits, we definitely need |
| # to import it. Otherwise we need to check, we might have |
| # imported it before. If it was imported and we merely |
| # fail to find it because commit messages did not track |
| # the mapping, then we end up importing it again. So |
| # combined repos using "updating with history" really should |
| # enable the "From ... rev:" commit header modifications. |
| if rev not in ancestor_revs and rev not in old2new_revs and not scanned_revs: |
| logger.debug("Revision %s triggers log analysis." % rev) |
| find_revs(old2new_revs, head) |
| scanned_revs = True |
| new_rev = old2new_revs.get(rev, None) |
| if new_rev: |
| return new_rev |
| |
| # If the commit is not in the original list of revisions |
| # to be imported, then it must be a parent of one of those |
| # commits and it was skipped during earlier imports or not |
| # found. Importing such merge commits leads to very ugly |
| # history (long cascade of merge commits which all point |
| # to to older commits) when switching from "update via |
| # patches" to "update with history". |
| # |
| # We can avoid importing merge commits if all non-merge commits |
| # reachable from it were already imported. In that case we |
| # can root the new commits in the current head revision. |
| def is_imported(prev): |
| parents = runcmd("git show --no-patch --pretty=format:%P " + prev, **largs).split() |
| if len(parents) > 1: |
| for p in parents: |
| if not is_imported(p): |
| logger.debug("Must import %s because %s is not imported." % (rev, p)) |
| return False |
| return True |
| elif prev in old2new_revs: |
| return True |
| else: |
| logger.debug("Must import %s because %s is not imported." % (rev, prev)) |
| return False |
| if rev not in revs and is_imported(rev): |
| old2new_revs[rev] = head |
| return head |
| |
| # Need to import rev. Collect some information about it. |
| logger.debug("Importing %s" % rev) |
| (parents, author_name, author_email, author_timestamp, body) = \ |
| runcmd("git show --no-patch --pretty=format:%P%x00%an%x00%ae%x00%at%x00%B " + rev, **largs).split(chr(0)) |
| parents = parents.split() |
| if parents: |
| # Arbitrarily pick the first parent as base. It may or may not have |
| # been imported before. For example, if the parent is a merge commit |
| # and previously the combined repository used patching as update |
| # method, then the actual merge commit parent never was imported. |
| # To cover this, We recursively import parents. |
| parent = parents[0] |
| new_parent = import_rev(parent) |
| # Clean index and working tree. TODO: can we combine this and the |
| # next into one command with less file IO? |
| # "git reset --hard" does not work, it changes HEAD of the parent |
| # repo, which we wanted to avoid. Probably need to keep |
| # track of the rev that corresponds to the index and use apply_commit(). |
| runcmd("git rm -q --ignore-unmatch -rf .", **wargs) |
| # Update index and working tree to match the parent. |
| runcmd("git checkout -q -f %s ." % new_parent, **wargs) |
| else: |
| parent = None |
| # Clean index and working tree. |
| runcmd("git rm -q --ignore-unmatch -rf .", **wargs) |
| |
| # Modify index and working tree such that it mirrors the commit. |
| apply_commit(parent, rev, largs, wargs, dest_dir, file_filter=file_filter) |
| |
| # Now commit. |
| new_tree = runcmd("git write-tree", **wargs).strip() |
| env = copy.deepcopy(wenv) |
| env['GIT_AUTHOR_NAME'] = author_name |
| env['GIT_AUTHOR_EMAIL'] = author_email |
| env['GIT_AUTHOR_DATE'] = author_timestamp |
| if hook: |
| # Need to turn the verbatim commit message into something resembling a patch header |
| # for the hook. |
| with tempfile.NamedTemporaryFile(delete=False) as patch: |
| patch.write('Subject: [PATCH] ') |
| patch.write(body) |
| patch.write('\n---\n') |
| patch.close() |
| runcmd([hook, patch.name, rev, name]) |
| with open(patch.name) as f: |
| body = f.read()[len('Subject: [PATCH] '):][:-len('\n---\n')] |
| |
| # We can skip non-merge commits that did not change any files. Those are typically |
| # the result of file filtering, although they could also have been introduced |
| # intentionally upstream, in which case we drop some information here. |
| if len(parents) == 1: |
| parent_rev = import_rev(parents[0]) |
| old_tree = runcmd("git show -s --pretty=format:%T " + parent_rev, **wargs).strip() |
| commit = old_tree != new_tree |
| if not commit: |
| new_rev = parent_rev |
| else: |
| commit = True |
| if commit: |
| new_rev = runcmd("git commit-tree".split() + add_p([import_rev(p) for p in parents]) + |
| ["-m", body, new_tree], |
| env=env).strip() |
| old2new_revs[rev] = new_rev |
| |
| return new_rev |
| |
| if revs: |
| for rev in revs: |
| import_rev(rev) |
| # Remember how to update our current head. New components get added, |
| # updated components get the delta between current head and the updated component |
| # applied. |
| additional_heads[old2new_revs[revs[-1]]] = head if repo['last_revision'] else None |
| repo['last_revision'] = revs[-1] |
| |
| # Now construct the final merge commit. We create the tree by |
| # starting with the head and applying the changes from each |
| # components imported head revision. |
| if additional_heads: |
| runcmd("git reset --hard", **wargs) |
| for rev, base in additional_heads.items(): |
| apply_commit(base, rev, wargs, wargs, None) |
| |
| # Commit with all component branches as parents as well as the previous head. |
| logger.info("Writing final merge commit...") |
| msg = conf_commit_msg(conf, components) |
| new_tree = runcmd("git write-tree", **wargs).strip() |
| new_rev = runcmd("git commit-tree".split() + |
| add_p([head] + list(additional_heads.keys())) + |
| ["-m", msg, new_tree], |
| **wargs).strip() |
| # And done! This is the first time we change the HEAD in the actual work tree. |
| runcmd("git reset --hard %s" % new_rev) |
| |
| # Update and stage the (potentially modified) |
| # combo-layer.conf, but do not commit separately. |
| for name in repos: |
| repo = conf.repos[name] |
| rev = repo['last_revision'] |
| conf.update(name, "last_revision", rev) |
| if commit_conf_file(conf, components, False): |
| # Must augment the previous commit. |
| runcmd("git commit --amend -C HEAD") |
| |
| |
| scanned_revs = False |
| def find_revs(old2new, head): |
| '''Construct mapping from original commit hash to commit hash in |
| combined repo by looking at the commit messages. Depends on the |
| "From ... rev: ..." convention.''' |
| logger.info("Analyzing log messages to find previously imported commits...") |
| num_known = len(old2new) |
| log = runcmd("git log --grep='From .* rev: [a-fA-F0-9][a-fA-F0-9]*' --pretty=format:%H%x00%B%x00 " + head).split(chr(0)) |
| regex = re.compile(r'From .* rev: ([a-fA-F0-9]+)') |
| for new_rev, body in zip(*[iter(log)]* 2): |
| # Use the last one, in the unlikely case there are more than one. |
| rev = regex.findall(body)[-1] |
| if rev not in old2new: |
| old2new[rev] = new_rev.strip() |
| logger.info("Found %d additional commits, leading to: %s" % (len(old2new) - num_known, old2new)) |
| |
| |
| def apply_commit(parent, rev, largs, wargs, dest_dir, file_filter=None): |
| '''Compare revision against parent, remove files deleted in the |
| commit, re-write new or modified ones. Moves them into dest_dir. |
| Optionally filters files. |
| ''' |
| if not dest_dir: |
| dest_dir = "." |
| # -r recurses into sub-directories, given is the full overview of |
| # what changed. We do not care about copy/edits or renames, so we |
| # can disable those with --no-renames (but we still parse them, |
| # because it was not clear from git documentation whether C and M |
| # lines can still occur). |
| logger.debug("Applying changes between %s and %s in %s" % (parent, rev, largs["destdir"])) |
| delete = [] |
| update = [] |
| if parent: |
| # Apply delta. |
| changes = runcmd("git diff-tree --no-commit-id --no-renames --name-status -r --raw -z %s %s" % (parent, rev), **largs).split(chr(0)) |
| for status, name in zip(*[iter(changes)]*2): |
| if status[0] in "ACMRT": |
| update.append(name) |
| elif status[0] in "D": |
| delete.append(name) |
| else: |
| logger.error("Unknown status %s of file %s in revision %s" % (status, name, rev)) |
| sys.exit(1) |
| else: |
| # Copy all files. |
| update.extend(runcmd("git ls-tree -r --name-only -z %s" % rev, **largs).split(chr(0))) |
| |
| # Include/exclude files as define in the component config. |
| # Both updated and deleted file lists get filtered, because it might happen |
| # that a file gets excluded, pulled from a different component, and then the |
| # excluded file gets deleted. In that case we must keep the copy. |
| if file_filter: |
| file_filter(update) |
| file_filter(delete) |
| |
| # We export into a tar archive here and extract with tar because it is simple (no |
| # need to implement file and symlink writing ourselves) and gives us some degree |
| # of parallel IO. The downside is that we have to pass the list of files via |
| # command line parameters - hopefully there will never be too many at once. |
| if update: |
| target = os.path.join(wargs["destdir"], dest_dir) |
| if not os.path.isdir(target): |
| os.makedirs(target) |
| quoted_target = pipes.quote(target) |
| # os.sysconf('SC_ARG_MAX') is lying: running a command with |
| # string length 629343 already failed with "Argument list too |
| # long" although SC_ARG_MAX = 2097152. "man execve" explains |
| # the limitations, but those are pretty complicated. So here |
| # we just hard-code a fixed value which is more likely to work. |
| max_cmdsize = 64 * 1024 |
| while update: |
| quoted_args = [] |
| unquoted_args = [] |
| cmdsize = 100 + len(quoted_target) |
| while update: |
| quoted_next = pipes.quote(update[0]) |
| size_next = len(quoted_next) + len(dest_dir) + 1 |
| logger.debug('cmdline length %d + %d < %d?' % (cmdsize, size_next, os.sysconf('SC_ARG_MAX'))) |
| if cmdsize + size_next < max_cmdsize: |
| quoted_args.append(quoted_next) |
| unquoted_args.append(update.pop(0)) |
| cmdsize += size_next |
| else: |
| logger.debug('Breaking the cmdline at length %d' % cmdsize) |
| break |
| logger.debug('Final cmdline length %d / %d' % (cmdsize, os.sysconf('SC_ARG_MAX'))) |
| cmd = "git archive %s %s | tar -C %s -xf -" % (rev, ' '.join(quoted_args), quoted_target) |
| logger.debug('First cmdline length %d' % len(cmd)) |
| runcmd(cmd, **largs) |
| cmd = "git add -f".split() + [os.path.join(dest_dir, x) for x in unquoted_args] |
| logger.debug('Second cmdline length %d' % reduce(lambda x, y: x + len(y), cmd, 0)) |
| runcmd(cmd, **wargs) |
| if delete: |
| for path in delete: |
| if dest_dir: |
| path = os.path.join(dest_dir, path) |
| runcmd("git rm -f --ignore-unmatch".split() + [os.path.join(dest_dir, x) for x in delete], **wargs) |
| |
| def action_error(conf, args): |
| logger.info("invalid action %s" % args[0]) |
| |
| actions = { |
| "init": action_init, |
| "update": action_update, |
| "pull": action_pull, |
| "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 [components] get patches from component repos and apply them to the combo repo |
| pull [components] just pull component repos only |
| splitpatch [commit] generate commit patch and split per component, default commit is HEAD""") |
| |
| parser.add_option("-c", "--conf", help = "specify the config file (conf/combo-layer.conf is the default).", |
| action = "store", dest = "conffile", default = "conf/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) |
| |
| parser.add_option("-n", "--no-pull", help = "skip pulling component repos during update", |
| action = "store_true", dest = "nopull", default = False) |
| |
| parser.add_option("--hard-reset", |
| help = "instead of pull do fetch and hard-reset in component repos", |
| action = "store_true", dest = "hard_reset", default = False) |
| |
| parser.add_option("-H", "--history", help = "import full history of components during init", |
| action = "store_true", 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) |
| initmode = (args[1] == 'init') |
| confdata.sanity_check(initmode) |
| actions.get(args[1], action_error)(confdata, args[1:]) |
| |
| if __name__ == "__main__": |
| try: |
| ret = main() |
| except Exception: |
| ret = 1 |
| import traceback |
| traceback.print_exc() |
| sys.exit(ret) |