kopia lustrzana https://github.com/jupyterhub/repo2docker
75 wiersze
2.6 KiB
Python
75 wiersze
2.6 KiB
Python
import subprocess
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from ..utils import R2dState, execute_cmd
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from .base import ContentProvider, ContentProviderException
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args_enabling_topic = ["--config", "extensions.topic="]
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class Mercurial(ContentProvider):
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"""Provide contents of a remote Mercurial repository."""
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def detect(self, source, ref=None, extra_args=None):
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if "github.com/" in source or source.endswith(".git"):
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return None
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try:
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subprocess.check_output(
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["hg", "identify", source, "--config", "extensions.hggit=!"]
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+ args_enabling_topic,
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stderr=subprocess.DEVNULL,
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)
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except subprocess.CalledProcessError:
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return None
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return {"repo": source, "ref": ref}
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def fetch(self, spec, output_dir, yield_output=False):
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repo = spec["repo"]
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ref = spec.get("ref", None)
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# make a clone of the remote repository
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try:
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cmd = [
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"hg",
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"clone",
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repo,
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output_dir,
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"--config",
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"phases.publish=False",
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] + args_enabling_topic
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if ref is not None:
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# don't update so the clone will include an empty working
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# directory, the given ref will be updated out later
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cmd.extend(["--noupdate"])
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yield from execute_cmd(cmd, capture=yield_output)
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except subprocess.CalledProcessError as error:
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msg = f"Failed to clone repository from {repo}"
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if ref is not None:
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msg += f" (ref {ref})"
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msg += "."
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raise ContentProviderException(msg) from error
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# check out the specific ref given by the user
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if ref is not None:
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try:
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yield from execute_cmd(
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["hg", "update", "--clean", ref] + args_enabling_topic,
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cwd=output_dir,
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capture=yield_output,
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)
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except subprocess.CalledProcessError:
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self.log.error(
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f"Failed to update to ref {ref}", extra=dict(phase=R2dState.FAILED)
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)
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raise ValueError(f"Failed to update to ref {ref}")
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cmd = ["hg", "identify", "-i"] + args_enabling_topic
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sha1 = subprocess.Popen(cmd, stdout=subprocess.PIPE, cwd=output_dir)
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self._node_id = sha1.stdout.read().decode().strip()
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@property
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def content_id(self):
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"""A unique ID to represent the version of the content."""
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return self._node_id
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