Digest32 = NewType('Digest32', str)
-class InfoTableEntry(types.SimpleNamespace):
+class ChannelTableEntry(types.SimpleNamespace):
digest: Digest16
file: str
size: int
url: str
-class Info(types.SimpleNamespace):
+class Channel(types.SimpleNamespace):
channel_html: bytes
forwarded_url: str
git_revision: str
release_name: str
- table: Dict[str, InfoTableEntry]
+ table: Dict[str, ChannelTableEntry]
url: str
return filecmp.cmpfiles(a, b, files, shallow=False)
-def fetch(v: Verification, channel_url: str) -> Info:
- info = Info()
- info.url = channel_url
+def fetch(v: Verification, channel_url: str) -> Channel:
+ channel = Channel()
+ channel.url = channel_url
v.status('Fetching channel')
request = urllib.request.urlopen(
'https://channels.nixos.org/nixos-20.03', timeout=10)
- info.channel_html = request.read()
- info.forwarded_url = request.geturl()
+ channel.channel_html = request.read()
+ channel.forwarded_url = request.geturl()
v.result(request.status == 200)
- v.check('Got forwarded', info.url != info.forwarded_url)
- return info
+ v.check('Got forwarded', channel.url != channel.forwarded_url)
+ return channel
-def parse_channel(v: Verification, info: Info) -> None:
+def parse_channel(v: Verification, channel: Channel) -> None:
v.status('Parsing channel description as XML')
- d = xml.dom.minidom.parseString(info.channel_html)
+ d = xml.dom.minidom.parseString(channel.channel_html)
v.ok()
v.status('Extracting release name:')
h1_name = d.getElementsByTagName('h1')[0].firstChild.nodeValue.split()[2]
v.status(title_name)
v.result(title_name == h1_name)
- info.release_name = title_name
+ channel.release_name = title_name
v.status('Extracting git commit:')
git_commit_node = d.getElementsByTagName('tt')[0]
- info.git_commit = git_commit_node.firstChild.nodeValue
- v.status(info.git_commit)
+ channel.git_commit = git_commit_node.firstChild.nodeValue
+ v.status(channel.git_commit)
v.ok()
v.status('Verifying git commit label')
v.result(git_commit_node.previousSibling.nodeValue == 'Git commit ')
v.status('Parsing table')
- info.table = {}
+ channel.table = {}
for row in d.getElementsByTagName('tr')[1:]:
name = row.childNodes[0].firstChild.firstChild.nodeValue
url = row.childNodes[0].firstChild.getAttribute('href')
size = int(row.childNodes[1].firstChild.nodeValue)
digest = Digest16(row.childNodes[2].firstChild.firstChild.nodeValue)
- info.table[name] = InfoTableEntry(url=url, digest=digest, size=size)
+ channel.table[name] = ChannelTableEntry(url=url, digest=digest, size=size)
v.ok()
return path
-def fetch_resources(v: Verification, info: Info) -> None:
+def fetch_resources(v: Verification, channel: Channel) -> None:
for resource in ['git-revision', 'nixexprs.tar.xz']:
- fields = info.table[resource]
- url = urllib.parse.urljoin(info.forwarded_url, fields.url)
+ fields = channel.table[resource]
+ url = urllib.parse.urljoin(channel.forwarded_url, fields.url)
fields.file = fetch_with_nix_prefetch_url(v, url, fields.digest)
v.status('Verifying git commit on main page matches git commit in table')
v.result(
open(
- info.table['git-revision'].file).read(999) == info.git_commit)
+ channel.table['git-revision'].file).read(999) == channel.git_commit)
-def check_channel_contents(v: Verification, info: Info) -> None:
+def check_channel_contents(v: Verification, channel: Channel) -> None:
with tempfile.TemporaryDirectory() as d:
- v.status('Extracting %s' % info.table['nixexprs.tar.xz'].file)
- shutil.unpack_archive(info.table['nixexprs.tar.xz'].file, d)
+ v.status('Extracting %s' % channel.table['nixexprs.tar.xz'].file)
+ shutil.unpack_archive(channel.table['nixexprs.tar.xz'].file, d)
v.ok()
v.status('Removing temporary directory')
v.ok()
def main() -> None:
v = Verification()
- info = fetch(v, 'https://channels.nixos.org/nixos-20.03')
- parse_channel(v, info)
- fetch_resources(v, info)
- check_channel_contents(v, info)
- print(info)
+ channel = fetch(v, 'https://channels.nixos.org/nixos-20.03')
+ parse_channel(v, channel)
+ fetch_resources(v, channel)
+ check_channel_contents(v, channel)
+ print(channel)
main()