X-Git-Url: http://git.scottworley.com/pinch/blobdiff_plain/0a4ff8dde934f9921371da9600e473dd090a7425..9343cf4818bc2b3772e46842b6703b2e9cd99e4d:/pinch.py diff --git a/pinch.py b/pinch.py index f5fbb48..5e6aab9 100644 --- a/pinch.py +++ b/pinch.py @@ -22,9 +22,11 @@ from typing import ( Dict, Iterable, List, + Mapping, NamedTuple, NewType, Tuple, + Type, Union, ) @@ -146,13 +148,16 @@ class GitSearchPath(TarrableSearchPath): def fetch(self, v: Verification, section: str, conf: configparser.SectionProxy) -> str: - if 'git_repo' not in conf or 'release_name' not in conf: + if 'git_revision' not in conf or 'release_name' not in conf: raise Exception( 'Cannot update unpinned channel "%s" (Run "pin" before "update")' % section) + the_pin = GitPin( + release_name=conf['release_name'], + git_revision=conf['git_revision']) - ensure_git_rev_available(v, self) - return git_get_tarball(v, self) + ensure_git_rev_available(v, self, the_pin) + return git_get_tarball(v, self, the_pin) class ChannelSearchPath(TarrableSearchPath): @@ -161,7 +166,11 @@ class ChannelSearchPath(TarrableSearchPath): self.old_git_revision = self.git_revision del self.git_revision - pin_channel(v, self) + fetch(v, self) + new_gitpin = parse_channel(v, self) + fetch_resources(v, self, new_gitpin) + ensure_git_rev_available(v, self, new_gitpin) + check_channel_contents(v, self) return ChannelPin( release_name=self.release_name, tarball_url=self.table['nixexprs.tar.xz'].absolute_url, @@ -219,7 +228,7 @@ def fetch(v: Verification, channel: TarrableSearchPath) -> None: v.check('Got forwarded', channel.channel_url != channel.forwarded_url) -def parse_channel(v: Verification, channel: TarrableSearchPath) -> None: +def parse_channel(v: Verification, channel: TarrableSearchPath) -> GitPin: v.status('Parsing channel description as XML') d = xml.dom.minidom.parseString(channel.channel_html) v.ok() @@ -250,6 +259,7 @@ def parse_channel(v: Verification, channel: TarrableSearchPath) -> None: channel.table[name] = ChannelTableEntry( url=url, digest=digest, size=size) v.ok() + return GitPin(release_name=title_name, git_revision=channel.git_revision) def digest_string(s: bytes) -> Digest16: @@ -299,7 +309,10 @@ def fetch_with_nix_prefetch_url( return path # type: ignore # (for old mypy) -def fetch_resources(v: Verification, channel: TarrableSearchPath) -> None: +def fetch_resources( + v: Verification, + channel: ChannelSearchPath, + pin: GitPin) -> None: for resource in ['git-revision', 'nixexprs.tar.xz']: fields = channel.table[resource] fields.absolute_url = urllib.parse.urljoin( @@ -309,7 +322,7 @@ def fetch_resources(v: Verification, channel: TarrableSearchPath) -> None: v.status('Verifying git commit on main page matches git commit in table') v.result( open( - channel.table['git-revision'].file).read(999) == channel.git_revision) + channel.table['git-revision'].file).read(999) == pin.git_revision) def git_cachedir(git_repo: str) -> str: @@ -399,12 +412,13 @@ def git_fetch(v: Verification, channel: TarrableSearchPath) -> None: def ensure_git_rev_available( v: Verification, - channel: TarrableSearchPath) -> None: + channel: TarrableSearchPath, + pin: GitPin) -> None: cachedir = git_cachedir(channel.git_repo) if os.path.exists(cachedir): v.status('Checking if we already have this rev:') process = subprocess.run( - ['git', '-C', cachedir, 'cat-file', '-e', channel.git_revision]) + ['git', '-C', cachedir, 'cat-file', '-e', pin.git_revision]) if process.returncode == 0: v.status('yes') if process.returncode == 1: @@ -481,7 +495,10 @@ def git_checkout( v.result(git.returncode == 0 and tar.returncode == 0) -def git_get_tarball(v: Verification, channel: TarrableSearchPath) -> str: +def git_get_tarball( + v: Verification, + channel: TarrableSearchPath, + pin: GitPin) -> str: cache_file = tarball_cache_file(channel) if os.path.exists(cache_file): cached_tarball = open(cache_file).read(9999) @@ -490,17 +507,17 @@ def git_get_tarball(v: Verification, channel: TarrableSearchPath) -> str: with tempfile.TemporaryDirectory() as output_dir: output_filename = os.path.join( - output_dir, channel.release_name + '.tar.xz') + output_dir, pin.release_name + '.tar.xz') with open(output_filename, 'w') as output_file: v.status( 'Generating tarball for git revision %s' % - channel.git_revision) + pin.git_revision) git = subprocess.Popen(['git', '-C', git_cachedir(channel.git_repo), 'archive', - '--prefix=%s/' % channel.release_name, - channel.git_revision], + '--prefix=%s/' % pin.release_name, + pin.git_revision], stdout=subprocess.PIPE) xz = subprocess.Popen(['xz'], stdin=git.stdout, stdout=output_file) xz.wait() @@ -559,14 +576,6 @@ def check_channel_contents( v.ok() -def pin_channel(v: Verification, channel: TarrableSearchPath) -> None: - fetch(v, channel) - parse_channel(v, channel) - fetch_resources(v, channel) - ensure_git_rev_available(v, channel) - check_channel_contents(v, channel) - - def git_revision_name(v: Verification, channel: TarrableSearchPath) -> str: v.status('Getting commit date') process = subprocess.run(['git', @@ -585,11 +594,12 @@ def git_revision_name(v: Verification, channel: TarrableSearchPath) -> str: def read_search_path(conf: configparser.SectionProxy) -> SearchPath: - if 'alias_of' in conf: - return AliasSearchPath(**dict(conf.items())) - if 'channel_url' in conf: - return ChannelSearchPath(**dict(conf.items())) - return GitSearchPath(**dict(conf.items())) + mapping: Mapping[str, Type[SearchPath]] = { + 'alias': AliasSearchPath, + 'channel': ChannelSearchPath, + 'git': GitSearchPath, + } + return mapping[conf['type']](**dict(conf.items())) def read_config(filename: str) -> configparser.ConfigParser: @@ -610,7 +620,7 @@ def read_config_files( return merged_config -def pin(args: argparse.Namespace) -> None: +def pinCommand(args: argparse.Namespace) -> None: v = Verification() config = read_config(args.channels_file) for section in config.sections(): @@ -625,7 +635,7 @@ def pin(args: argparse.Namespace) -> None: config.write(configfile) -def update(args: argparse.Namespace) -> None: +def updateCommand(args: argparse.Namespace) -> None: v = Verification() exprs: Dict[str, str] = {} config = read_config_files(args.channels_file) @@ -667,11 +677,11 @@ def main() -> None: parser_pin = subparsers.add_parser('pin') parser_pin.add_argument('channels_file', type=str) parser_pin.add_argument('channels', type=str, nargs='*') - parser_pin.set_defaults(func=pin) + parser_pin.set_defaults(func=pinCommand) parser_update = subparsers.add_parser('update') parser_update.add_argument('--dry-run', action='store_true') parser_update.add_argument('channels_file', type=str, nargs='+') - parser_update.set_defaults(func=update) + parser_update.set_defaults(func=updateCommand) args = parser.parse_args() args.func(args)