X-Git-Url: http://git.scottworley.com/pinch/blobdiff_plain/dd1026fe9c1e4b3b4097d5a9589597b64ca0b55b..93d2dafe3922ef5230ae41f759563fa5c3aa180e:/pinch.py diff --git a/pinch.py b/pinch.py index 5d93c26..632994b 100644 --- a/pinch.py +++ b/pinch.py @@ -38,31 +38,6 @@ xdg = XDG( os.path.expanduser('~/.cache'))) -Digest16 = NewType('Digest16', str) -Digest32 = NewType('Digest32', str) - - -class ChannelTableEntry(types.SimpleNamespace): - absolute_url: str - digest: Digest16 - file: str - size: int - url: str - - -class Channel(types.SimpleNamespace): - alias_of: str - channel_html: bytes - channel_url: str - forwarded_url: str - git_ref: str - git_repo: str - git_revision: str - old_git_revision: str - release_name: str - table: Dict[str, ChannelTableEntry] - - class VerificationError(Exception): pass @@ -98,6 +73,68 @@ class Verification: self.result(True) +Digest16 = NewType('Digest16', str) +Digest32 = NewType('Digest32', str) + + +class ChannelTableEntry(types.SimpleNamespace): + absolute_url: str + digest: Digest16 + file: str + size: int + url: str + + +class SearchPath(types.SimpleNamespace): + release_name: str + + +class Channel(SearchPath): + alias_of: str + channel_html: bytes + channel_url: str + forwarded_url: str + git_ref: str + git_repo: str + git_revision: str + old_git_revision: str + table: Dict[str, ChannelTableEntry] + + def pin(self, v: Verification, conf: configparser.SectionProxy) -> None: + if hasattr(self, 'alias_of'): + assert not hasattr(self, 'git_repo') + return + + if hasattr(self, 'git_revision'): + self.old_git_revision = self.git_revision + del self.git_revision + + if 'channel_url' in conf: + pin_channel(v, self) + conf['release_name'] = self.release_name + conf['tarball_url'] = self.table['nixexprs.tar.xz'].absolute_url + conf['tarball_sha256'] = self.table['nixexprs.tar.xz'].digest + else: + git_fetch(v, self) + conf['release_name'] = git_revision_name(v, self) + conf['git_revision'] = self.git_revision + + def fetch(self, v: Verification, section: str, + conf: configparser.SectionProxy) -> str: + if 'git_repo' not in conf or 'release_name' not in conf: + raise Exception( + 'Cannot update unpinned channel "%s" (Run "pin" before "update")' % + section) + + if 'channel_url' in conf: + return fetch_with_nix_prefetch_url( + v, conf['tarball_url'], Digest16( + conf['tarball_sha256'])) + + ensure_git_rev_available(v, self) + return git_get_tarball(v, self) + + def compare(a: str, b: str) -> Tuple[List[str], List[str], List[str]]: def throw(error: OSError) -> None: @@ -131,7 +168,7 @@ def fetch(v: Verification, channel: Channel) -> None: request = urllib.request.urlopen(channel.channel_url, timeout=10) channel.channel_html = request.read() channel.forwarded_url = request.geturl() - v.result(request.status == 200) + v.result(request.status == 200) # type: ignore # (for old mypy) v.check('Got forwarded', channel.channel_url != channel.forwarded_url) @@ -184,7 +221,7 @@ def digest_file(filename: str) -> Digest16: def to_Digest16(v: Verification, digest32: Digest32) -> Digest16: v.status('Converting digest to base16') process = subprocess.run( - ['nix', 'to-base16', '--type', 'sha256', digest32], capture_output=True) + ['nix', 'to-base16', '--type', 'sha256', digest32], stdout=subprocess.PIPE) v.result(process.returncode == 0) return Digest16(process.stdout.decode().strip()) @@ -192,7 +229,7 @@ def to_Digest16(v: Verification, digest32: Digest32) -> Digest16: def to_Digest32(v: Verification, digest16: Digest16) -> Digest32: v.status('Converting digest to base32') process = subprocess.run( - ['nix', 'to-base32', '--type', 'sha256', digest16], capture_output=True) + ['nix', 'to-base32', '--type', 'sha256', digest16], stdout=subprocess.PIPE) v.result(process.returncode == 0) return Digest32(process.stdout.decode().strip()) @@ -203,7 +240,7 @@ def fetch_with_nix_prefetch_url( digest: Digest16) -> str: v.status('Fetching %s' % url) process = subprocess.run( - ['nix-prefetch-url', '--print-path', url, digest], capture_output=True) + ['nix-prefetch-url', '--print-path', url, digest], stdout=subprocess.PIPE) v.result(process.returncode == 0) prefetch_digest, path, empty = process.stdout.decode().split('\n') assert empty == '' @@ -212,7 +249,7 @@ def fetch_with_nix_prefetch_url( v.status("Verifying file digest") file_digest = digest_file(path) v.result(file_digest == digest) - return path + return path # type: ignore # (for old mypy) def fetch_resources(v: Verification, channel: Channel) -> None: @@ -417,13 +454,13 @@ def git_get_tarball(v: Verification, channel: Channel) -> str: v.status('Putting tarball in Nix store') process = subprocess.run( - ['nix-store', '--add', output_filename], capture_output=True) + ['nix-store', '--add', output_filename], stdout=subprocess.PIPE) v.result(process.returncode == 0) store_tarball = process.stdout.decode().strip() os.makedirs(os.path.dirname(cache_file), exist_ok=True) open(cache_file, 'w').write(store_tarball) - return store_tarball + return store_tarball # type: ignore # (for old mypy) def check_channel_metadata( @@ -482,13 +519,18 @@ def git_revision_name(v: Verification, channel: Channel) -> str: '-n1', '--format=%ct-%h', '--abbrev=11', + '--no-show-signature', channel.git_revision], - capture_output=True) + stdout=subprocess.PIPE) v.result(process.returncode == 0 and process.stdout != b'') return '%s-%s' % (os.path.basename(channel.git_repo), process.stdout.decode().strip()) +def read_search_path(conf: configparser.SectionProxy) -> Channel: + return Channel(**dict(conf.items())) + + def read_config(filename: str) -> configparser.ConfigParser: config = configparser.ConfigParser() config.read_file(open(filename), filename) @@ -502,49 +544,14 @@ def pin(args: argparse.Namespace) -> None: if args.channels and section not in args.channels: continue - channel = Channel(**dict(config[section].items())) + channel = read_search_path(config[section]) - if hasattr(channel, 'alias_of'): - assert not hasattr(channel, 'git_repo') - continue - - if hasattr(channel, 'git_revision'): - channel.old_git_revision = channel.git_revision - del channel.git_revision - - if 'channel_url' in config[section]: - pin_channel(v, channel) - config[section]['release_name'] = channel.release_name - config[section]['tarball_url'] = channel.table['nixexprs.tar.xz'].absolute_url - config[section]['tarball_sha256'] = channel.table['nixexprs.tar.xz'].digest - else: - git_fetch(v, channel) - config[section]['release_name'] = git_revision_name(v, channel) - config[section]['git_revision'] = channel.git_revision + channel.pin(v, config[section]) with open(args.channels_file, 'w') as configfile: config.write(configfile) -def fetch_channel( - v: Verification, - section: str, - conf: configparser.SectionProxy) -> str: - if 'git_repo' not in conf or 'release_name' not in conf: - raise Exception( - 'Cannot update unpinned channel "%s" (Run "pin" before "update")' % - section) - - if 'channel_url' in conf: - return fetch_with_nix_prefetch_url( - v, conf['tarball_url'], Digest16( - conf['tarball_sha256'])) - - channel = Channel(**dict(conf.items())) - ensure_git_rev_available(v, channel) - return git_get_tarball(v, channel) - - def update(args: argparse.Namespace) -> None: v = Verification() config = configparser.ConfigParser() @@ -555,7 +562,8 @@ def update(args: argparse.Namespace) -> None: if 'alias_of' in config[section]: assert 'git_repo' not in config[section] continue - tarball = fetch_channel(v, section, config[section]) + sp = read_search_path(config[section]) + tarball = sp.fetch(v, section, config[section]) if section in exprs: raise Exception('Duplicate channel "%s"' % section) exprs[section] = ( @@ -602,4 +610,5 @@ def main() -> None: args.func(args) -main() +if __name__ == '__main__': + main()