567 lines
17 KiB
Python
Executable File
567 lines
17 KiB
Python
Executable File
#! /usr/bin/env python3
|
|
from __future__ import annotations
|
|
|
|
import argparse
|
|
import platform
|
|
from collections.abc import Sequence
|
|
from dataclasses import dataclass
|
|
from io import BytesIO
|
|
from mimetypes import guess_type
|
|
from pathlib import Path
|
|
from subprocess import check_call
|
|
from subprocess import check_output
|
|
from tarfile import TarFile
|
|
from tarfile import TarInfo
|
|
from typing import Any
|
|
from typing import Optional
|
|
from typing import Union
|
|
from urllib.parse import urlparse
|
|
from zipfile import ZipFile
|
|
|
|
import requests
|
|
|
|
|
|
# Extract metadata from repo
|
|
|
|
|
|
class InvalidRemoteError(ValueError):
|
|
pass
|
|
|
|
|
|
def removeprefix(s: str, pre: str) -> str:
|
|
# Duplicate str.removeprefix for py<3.9
|
|
try:
|
|
return s.removeprefix(pre) # type: ignore
|
|
except AttributeError:
|
|
# Py < 3.9
|
|
return s[len(pre) :] if s and s.startswith(pre) else s
|
|
|
|
|
|
def removesuffix(s: str, suf: str) -> str:
|
|
# Duplicate str.removesuffix for py<3.9
|
|
try:
|
|
return s.removesuffix(suf) # type: ignore
|
|
except AttributeError:
|
|
# Py < 3.9
|
|
return s[: -len(suf)] if s and s.endswith(suf) else s
|
|
|
|
|
|
@dataclass
|
|
class GitRemoteInfo:
|
|
hostname: str
|
|
owner: str
|
|
repo: str
|
|
|
|
def get_releases_url(self):
|
|
"""Gets API url for releases based on hostname and repo info
|
|
|
|
Currently only supporting Github and Gitea APIs"""
|
|
if self.hostname == "github.com":
|
|
return (
|
|
f"https://api.{self.hostname}/repos/{self.owner}/{self.repo}/releases"
|
|
)
|
|
|
|
# Try to detect an api
|
|
swagger_uri = f"https://{self.hostname}/swagger.v1.json"
|
|
result = requests.get(swagger_uri)
|
|
result.raise_for_status()
|
|
swag = result.json()
|
|
|
|
# Look for releases API
|
|
gitea_releases_template = "/repos/{owner}/{repo}/releases"
|
|
if gitea_releases_template in swag["paths"]:
|
|
# TODO: Might be helpful to validate fields that are referenced in responses too
|
|
return "".join(
|
|
(
|
|
"https://",
|
|
self.hostname,
|
|
swag["basePath"],
|
|
gitea_releases_template.format(owner=self.owner, repo=self.repo),
|
|
)
|
|
)
|
|
|
|
raise InvalidRemoteError(
|
|
f"Could not find a valid API on host {self.hostname}. Only Github and Gitea APIs are supported"
|
|
)
|
|
|
|
|
|
def parse_git_remote(git_url: Optional[str] = None) -> GitRemoteInfo:
|
|
"""Extract Github repo info from a git remote url"""
|
|
if not git_url:
|
|
git_url = (
|
|
check_output(["git", "remote", "get-url", "origin"]).decode("UTF-8").strip()
|
|
)
|
|
|
|
# Normalize Github ssh url as a proper URL
|
|
if git_url.startswith("git@github.com:"):
|
|
git_ssh_parts = git_url.partition(":")
|
|
if not all(git_ssh_parts):
|
|
raise InvalidRemoteError(
|
|
f"Could not parse URL {git_url}. Is this an ssh url?"
|
|
)
|
|
git_url = f"ssh://{git_ssh_parts[0]}/{git_ssh_parts[2]}"
|
|
|
|
u = urlparse(git_url)
|
|
if not u.hostname:
|
|
raise ValueError("Not an https url on origin")
|
|
|
|
path = u.path.split("/")
|
|
if len(path) < 3 or not all(path[1:3]):
|
|
raise InvalidRemoteError(
|
|
f"{path[1:3]} Could not parse owner and repo from URL {git_url}"
|
|
)
|
|
|
|
return GitRemoteInfo(u.hostname, path[1], removesuffix(path[2], ".git"))
|
|
|
|
|
|
def parse_cargo_version(p: Path) -> str:
|
|
"""Extracts cargo version from a Cargo.toml file"""
|
|
with p.open() as f:
|
|
for line in f:
|
|
if line.startswith("version"):
|
|
return line.partition(" = ")[2].strip()[1:-1]
|
|
|
|
raise ValueError(f"No version found in {p}")
|
|
|
|
|
|
def read_git_tag(fetch: bool = True) -> Optional[str]:
|
|
"""Get local git tag for current repo
|
|
|
|
fetch: optionally fetch tags with depth of 1 from remote"""
|
|
if fetch:
|
|
check_call(["git", "fetch", "--tags", "--depth", "1"])
|
|
|
|
git_tag = check_output(["git", "describe", "--tags"]).decode("UTF-8").strip()
|
|
return git_tag or None
|
|
|
|
|
|
def read_version(from_tags: bool = False, fetch: bool = False) -> Optional[str]:
|
|
"""Read version information from file or from git"""
|
|
if from_tags:
|
|
return read_git_tag(fetch)
|
|
|
|
matchers = {
|
|
"Cargo.toml": parse_cargo_version,
|
|
}
|
|
|
|
for name, extractor in matchers.items():
|
|
p = Path(name)
|
|
if p.exists():
|
|
return extractor(p)
|
|
|
|
# TODO: Log this out to stderr
|
|
# raise ValueError(f"Unknown project type. Didn't find any of {matchers.keys()}")
|
|
return None
|
|
|
|
|
|
# Fetch release and assets from Github
|
|
|
|
|
|
def fetch_release(
|
|
remote: GitRemoteInfo,
|
|
version: Optional[str] = None
|
|
# TODO: Accept an argument for pre-release
|
|
) -> dict[Any, Any]:
|
|
"""Fetches a release object from a Github repo
|
|
|
|
If a version number is provided, that version will be retrieved. Otherwise, the latest
|
|
will be returned.
|
|
"""
|
|
result = requests.get(
|
|
remote.get_releases_url(),
|
|
# headers={"Accept": "application/vnd.github.v3+json"},
|
|
headers={"Accept": "application/json"},
|
|
)
|
|
result.raise_for_status()
|
|
|
|
# Return the latest if requested
|
|
if version is None or version == "latest":
|
|
return result.json()[0]
|
|
|
|
# Return matching version
|
|
for release in result.json():
|
|
if release["tag_name"].endswith(version):
|
|
return release
|
|
|
|
raise ValueError(f"Could not find release version ending in {version}")
|
|
|
|
|
|
def match_asset(
|
|
release: dict[Any, Any],
|
|
format: str,
|
|
version: Optional[str] = None,
|
|
system_mapping: Optional[dict[str, str]] = None,
|
|
arch_mapping: Optional[dict[str, str]] = None,
|
|
) -> dict[Any, Any]:
|
|
"""Accepts a release and searches for an appropriate asset attached using
|
|
a provided template and some alternative mappings for version, system, and machine info
|
|
|
|
Args
|
|
`release`: A dict release value from the Github API
|
|
`format`: is a python format string allowing for "{version}", "{system}", and "{arch}"
|
|
`version`: the version to use when matching, default will be the name of the release
|
|
`system_mapping`: alternative values for results returned from `platform.system()`
|
|
`arch_mapping`: alternative values for results returned from `platform.machine()`
|
|
|
|
Note: Some fuzziness is built into the {version} template variable. We will try to match against
|
|
the version as is, prefixed with a 'v' and have 'v' stripped from the beginning.
|
|
|
|
Eg. An example from an arm64 Mac:
|
|
|
|
match_asset({"name": "v1.0.0", ...}, `foo-{version}-{system}-{arch}.zip`)
|
|
|
|
Matches against:
|
|
* "foo-v1.0.0-Darwin-arm64.zip"
|
|
* "foo-1.0.0-Darwin-arm64.zip"
|
|
|
|
Now, instead of Darwin, maybe you want to use `macOS`. For that you'd provide a
|
|
`system_mapping`.
|
|
|
|
match_asset({"name": "v1.0.0", ...}, `foo-{version}-{system}-{arch}.zip, system_mapping={"Darwin": "macOS"})
|
|
|
|
Matches against:
|
|
* "foo-v1.0.0-macOS-arm64.zip"
|
|
* "foo-1.0.0-macOS-arm64.zip"
|
|
"""
|
|
if version is None:
|
|
version = release["tag_name"]
|
|
|
|
# This should never really happen
|
|
if version is None:
|
|
if "{version}" in format:
|
|
raise ValueError(
|
|
"No version provided or found in release name but is in format"
|
|
)
|
|
else:
|
|
# This should never happen, but since version isn't used anywhere, we can make it an empty string
|
|
version = ""
|
|
|
|
system = platform.system()
|
|
if system_mapping:
|
|
system = system_mapping.get(system, system)
|
|
|
|
arch = platform.machine()
|
|
if arch_mapping:
|
|
arch = arch_mapping.get(arch, arch)
|
|
|
|
expected_names = {
|
|
format.format(
|
|
version=normalized_version,
|
|
system=system,
|
|
arch=arch,
|
|
)
|
|
for normalized_version in (
|
|
version.lstrip("v"),
|
|
"v" + version if not version.startswith("v") else version,
|
|
)
|
|
}
|
|
|
|
for asset in release["assets"]:
|
|
if asset["name"] in expected_names:
|
|
return asset
|
|
|
|
raise ValueError(
|
|
f"Could not find asset named {expected_names} on release {release['name']}"
|
|
)
|
|
|
|
|
|
class PackageAdapter:
|
|
"""Adapts the names and extractall methods from ZipFile and TarFile classes"""
|
|
|
|
def __init__(self, content_type: str, response: requests.Response):
|
|
self._package: Union[TarFile, ZipFile]
|
|
if content_type == "application/zip":
|
|
self._package = ZipFile(BytesIO(response.content))
|
|
elif content_type == "application/x-tar":
|
|
self._package = TarFile(fileobj=response.raw)
|
|
elif content_type in (
|
|
"application/gzip",
|
|
"application/x-tar+gzip",
|
|
"application/x-compressed-tar",
|
|
):
|
|
self._package = TarFile.open(fileobj=BytesIO(response.content), mode="r:*")
|
|
else:
|
|
raise ValueError(f"Unknown or unsupported content type {content_type}")
|
|
|
|
def get_names(self) -> list[str]:
|
|
"""Get list of all file names in package"""
|
|
if isinstance(self._package, ZipFile):
|
|
return self._package.namelist()
|
|
if isinstance(self._package, TarFile):
|
|
return self._package.getnames()
|
|
|
|
raise ValueError(
|
|
f"Unknown package type, cannot extract from {type(self._package)}"
|
|
)
|
|
|
|
def extractall(
|
|
self,
|
|
path: Optional[Path],
|
|
members: Optional[list[str]],
|
|
) -> list[str]:
|
|
"""Extract all or a subset of files from the package
|
|
|
|
If the `file_names` list is empty, all files will be extracted"""
|
|
if path is None:
|
|
path = Path.cwd()
|
|
if not members:
|
|
self._package.extractall(path=path)
|
|
return self.get_names()
|
|
|
|
if isinstance(self._package, ZipFile):
|
|
self._package.extractall(path=path, members=members)
|
|
if isinstance(self._package, TarFile):
|
|
self._package.extractall(
|
|
path=path, members=(TarInfo(name) for name in members)
|
|
)
|
|
|
|
return members
|
|
|
|
|
|
def download_asset(
|
|
asset: dict[Any, Any],
|
|
extract_files: Optional[list[str]] = None,
|
|
destination: Optional[Path] = None,
|
|
) -> list[Path]:
|
|
"""Download asset from entity passed in
|
|
|
|
Extracts files from archives if provided. Any empty list will extract all files
|
|
|
|
Args
|
|
`asset`: asset dictionary as returned from API
|
|
`extract_files`: optional list of file paths to extract. An empty list will extract all
|
|
`destination`: destination directory to put the downloaded assset
|
|
|
|
Returns
|
|
list of Path objects containing all extracted files
|
|
"""
|
|
if destination is None:
|
|
destination = Path.cwd()
|
|
|
|
result = requests.get(asset["browser_download_url"])
|
|
|
|
content_type = asset.get(
|
|
"content_type",
|
|
guess_type(asset["name"]),
|
|
)
|
|
if extract_files is not None:
|
|
if isinstance(content_type, tuple):
|
|
content_type = "+".join(t for t in content_type if t is not None)
|
|
if not content_type:
|
|
raise TypeError(
|
|
"Cannot extract files from archive because we don't recognize the content type"
|
|
)
|
|
package = PackageAdapter(content_type, result)
|
|
extract_files = package.extractall(path=destination, members=extract_files)
|
|
return [destination / name for name in extract_files]
|
|
|
|
file_name = destination / asset["name"]
|
|
with open(file_name, "wb") as f:
|
|
f.write(result.content)
|
|
|
|
return [file_name]
|
|
|
|
|
|
class MapAddAction(argparse.Action):
|
|
def __call__(
|
|
self,
|
|
_: argparse.ArgumentParser,
|
|
namespace: argparse.Namespace,
|
|
values: Union[str, Sequence[Any], None],
|
|
option_string: Optional[str] = None,
|
|
):
|
|
# Validate that required value has something
|
|
if self.required and not values:
|
|
raise argparse.ArgumentError(
|
|
self, f"Did not provide required argument {option_string}"
|
|
)
|
|
|
|
# Get and initialize the destination
|
|
dest = getattr(namespace, self.dest)
|
|
if dest is None:
|
|
dest = {}
|
|
|
|
# Parse values
|
|
if values is not None:
|
|
if isinstance(values, str):
|
|
values = (values,)
|
|
for value in values:
|
|
if "=" not in value:
|
|
raise argparse.ArgumentError(
|
|
self,
|
|
f"Value needs to be in the form `key=value` and received {value}",
|
|
)
|
|
parts = value.partition("=")
|
|
dest[parts[0]] = parts[2]
|
|
|
|
# Set dest value
|
|
setattr(namespace, self.dest, dest)
|
|
|
|
|
|
def _parse_args(args: Optional[list[str]] = None) -> argparse.Namespace:
|
|
parser = argparse.ArgumentParser()
|
|
parser.add_argument(
|
|
"format",
|
|
help="Format template to match assets. Eg. `foo-{version}-{system}-{arch}.zip`",
|
|
)
|
|
parser.add_argument(
|
|
"destination",
|
|
metavar="DEST",
|
|
nargs="?",
|
|
type=Path,
|
|
default=Path.cwd(),
|
|
help="Destination directory. Defaults to current directory",
|
|
)
|
|
parser.add_argument(
|
|
"--hostname",
|
|
help="Git repository hostname",
|
|
)
|
|
parser.add_argument(
|
|
"--owner",
|
|
help="Owner of the repo. If not provided, it will be retrieved from the git url",
|
|
)
|
|
parser.add_argument(
|
|
"--repo",
|
|
help="Repo name. If not provided, it will be retrieved from the git url",
|
|
)
|
|
parser.add_argument(
|
|
"--git-url",
|
|
help="Git repository URL. Overrides `git remote` detection, but not command line options for hostname, owner, and repo",
|
|
)
|
|
parser.add_argument(
|
|
"--version",
|
|
help="Release version to download. If not provied, it will look for project metadata",
|
|
)
|
|
parser.add_argument(
|
|
"--version-git-tag",
|
|
"-t",
|
|
action="store_true",
|
|
help="Get the release version from a git tag",
|
|
)
|
|
parser.add_argument(
|
|
"--version-git-no-fetch",
|
|
action="store_true",
|
|
help="Shallow fetch tags prior to checking versions",
|
|
)
|
|
parser.add_argument(
|
|
"--map-system",
|
|
"-s",
|
|
action=MapAddAction,
|
|
help="Map a platform.system() value to a custom value",
|
|
)
|
|
parser.add_argument(
|
|
"--map-arch",
|
|
"-a",
|
|
action=MapAddAction,
|
|
help="Map a platform.machine() value to a custom value",
|
|
)
|
|
parser.add_argument(
|
|
"--exec",
|
|
"-c",
|
|
help="Shell commands to execute after download or extraction. {} will be expanded to the downloaded asset name.",
|
|
)
|
|
parser.add_argument(
|
|
"--extract-files",
|
|
"-e",
|
|
action="append",
|
|
help="A list of file names to extract from downloaded archive",
|
|
)
|
|
parser.add_argument(
|
|
"--extract-all",
|
|
"-x",
|
|
action="store_true",
|
|
help="Shell commands to execute after download or extraction",
|
|
)
|
|
parser.add_argument(
|
|
"--url-only",
|
|
action="store_true",
|
|
help="Only print the URL and do not download",
|
|
)
|
|
|
|
parsed_args = parser.parse_args(args)
|
|
|
|
# Merge in fields from args and git remote
|
|
if not all((parsed_args.owner, parsed_args.repo, parsed_args.hostname)):
|
|
remote_info = parse_git_remote(parsed_args.git_url)
|
|
|
|
def merge_field(a, b, field):
|
|
value = getattr(a, field)
|
|
if value is None:
|
|
setattr(a, field, getattr(b, field))
|
|
|
|
for field in ("owner", "repo", "hostname"):
|
|
merge_field(parsed_args, remote_info, field)
|
|
|
|
if parsed_args.version is None:
|
|
parsed_args.version = read_version(
|
|
parsed_args.version_git_tag,
|
|
not parsed_args.version_git_no_fetch,
|
|
)
|
|
|
|
if parsed_args.extract_all:
|
|
parsed_args.extract_files = []
|
|
|
|
return parsed_args
|
|
|
|
|
|
def download_release(
|
|
remote_info: GitRemoteInfo,
|
|
destination: Path,
|
|
format: str,
|
|
version: Optional[str] = None,
|
|
system_mapping: Optional[dict[str, str]] = None,
|
|
arch_mapping: Optional[dict[str, str]] = None,
|
|
extract_files: Optional[list[str]] = None,
|
|
) -> list[Path]:
|
|
"""Convenience method for fetching, downloading and extracting a release"""
|
|
release = fetch_release(remote_info)
|
|
asset = match_asset(
|
|
release,
|
|
format,
|
|
version=version,
|
|
system_mapping=system_mapping,
|
|
arch_mapping=arch_mapping,
|
|
)
|
|
files = download_asset(
|
|
asset,
|
|
extract_files=extract_files,
|
|
destination=destination,
|
|
)
|
|
|
|
return files
|
|
|
|
|
|
def main():
|
|
args = _parse_args()
|
|
|
|
release = fetch_release(
|
|
GitRemoteInfo(args.hostname, args.owner, args.repo), args.version
|
|
)
|
|
asset = match_asset(
|
|
release,
|
|
args.format,
|
|
version=args.version,
|
|
system_mapping=args.map_system,
|
|
arch_mapping=args.map_arch,
|
|
)
|
|
|
|
if args.url_only:
|
|
print(asset["browser_download_url"])
|
|
return
|
|
|
|
files = download_asset(
|
|
asset,
|
|
extract_files=args.extract_files,
|
|
destination=args.destination,
|
|
)
|
|
|
|
print(f"Downloaded {', '.join(str(f) for f in files)}")
|
|
|
|
# Optionally execute post command
|
|
if args.exec:
|
|
check_call(args.exec.format(asset["name"]), shell=True)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|