ohmyzsh/.github/workflows/dependencies/updater.py

450 lines
14 KiB
Python

import os
import subprocess
import sys
import requests
import shutil
import yaml
from copy import deepcopy
from typing import Optional, TypedDict
# Get TMP_DIR variable from environment
TMP_DIR = os.path.join(os.environ.get("TMP_DIR", "/tmp"), "ohmyzsh")
# Relative path to dependencies.yml file
DEPS_YAML_FILE = ".github/dependencies.yml"
# Dry run flag
DRY_RUN = os.environ.get("DRY_RUN", "0") == "1"
import timeit
class CodeTimer:
def __init__(self, name=None):
self.name = " '" + name + "'" if name else ''
def __enter__(self):
self.start = timeit.default_timer()
def __exit__(self, exc_type, exc_value, traceback):
self.took = (timeit.default_timer() - self.start) * 1000.0
print('Code block' + self.name + ' took: ' + str(self.took) + ' ms')
### YAML representation
def str_presenter(dumper, data):
"""
Configures yaml for dumping multiline strings
Ref: https://stackoverflow.com/a/33300001
"""
if len(data.splitlines()) > 1: # check for multiline string
return dumper.represent_scalar('tag:yaml.org,2002:str', data, style='|')
return dumper.represent_scalar('tag:yaml.org,2002:str', data)
yaml.add_representer(str, str_presenter)
yaml.representer.SafeRepresenter.add_representer(str, str_presenter)
# Types
class DependencyDict(TypedDict):
repo: str
branch: str
version: str
precopy: Optional[str]
postcopy: Optional[str]
class DependencyYAML(TypedDict):
dependencies: dict[str, DependencyDict]
class UpdateStatus(TypedDict):
has_updates: bool
version: Optional[str]
compare_url: Optional[str]
head_ref: Optional[str]
head_url: Optional[str]
class CommandRunner:
class Exception(Exception):
def __init__(self, message, returncode, stage, stdout, stderr):
super().__init__(message)
self.returncode = returncode
self.stage = stage
self.stdout = stdout
self.stderr = stderr
@staticmethod
def run_or_fail(command: list[str], stage: str, *args, **kwargs):
if DRY_RUN and command[0] == "gh":
command.insert(0, "echo")
result = subprocess.run(command, *args, capture_output=True, **kwargs)
if result.returncode != 0:
raise CommandRunner.Exception(
f"{stage} command failed with exit code {result.returncode}", returncode=result.returncode,
stage=stage,
stdout=result.stdout.decode("utf-8"),
stderr=result.stderr.decode("utf-8")
)
return result
class DependencyStore:
store: DependencyYAML = {
"dependencies": {}
}
@staticmethod
def set(data: DependencyYAML):
DependencyStore.store = data
@staticmethod
def update_dependency_version(path: str, version: str) -> DependencyYAML:
with CodeTimer(f"store deepcopy: {path}"):
store_copy = deepcopy(DependencyStore.store)
dependency = store_copy["dependencies"].get(path, {})
dependency["version"] = version
store_copy["dependencies"][path] = dependency
return store_copy
@staticmethod
def write_store(file: str, data: DependencyYAML):
with open(file, "w") as yaml_file:
yaml.safe_dump(data, yaml_file, sort_keys=False)
class Dependency:
def __init__(self, path: str, values: DependencyDict):
self.path = path
self.values = values
self.name: str = ""
self.desc: str = ""
self.kind: str = ""
match path.split("/"):
case ["plugins", name]:
self.name = name
self.kind = "plugin"
self.desc = f"{name} plugin"
case ["themes", name]:
self.name = name.replace(".zsh-theme", "")
self.kind = "theme"
self.desc = f"{self.name} theme"
case _:
self.name = self.desc = path
def __str__(self):
output: str = ""
for key in DependencyDict.__dict__['__annotations__'].keys():
if key not in self.values:
output += f"{key}: None\n"
continue
value = self.values[key]
if "\n" not in value:
output += f"{key}: {value}\n"
else:
output += f"{key}:\n "
output += value.replace("\n", "\n ", value.count("\n") - 1)
return output
def update_or_notify(self):
# Print dependency settings
print(f"Processing {self.desc}...", file=sys.stderr)
print(self, file=sys.stderr)
# Check for updates
repo = self.values["repo"]
remote_branch = self.values["branch"]
version = self.values["version"]
is_tag = version.startswith("tag:")
try:
with CodeTimer(f"update check: {repo}"):
if is_tag:
status = GitHub.check_newer_tag(repo, version.replace("tag:", ""))
else:
status = GitHub.check_updates(repo, remote_branch, version)
if status["has_updates"]:
short_sha = status["head_ref"][:8]
new_version = status["version"] if is_tag else short_sha
try:
# Create new branch
branch = Git.create_branch(self.path, new_version)
# Update dependencies.yml file
self.__update_yaml(f"tag:{new_version}" if is_tag else status["version"])
# Update dependency files
self.__apply_upstream_changes()
# Add all changes and commit
Git.add_and_commit(self.name, short_sha)
# Push changes to remote
Git.push(branch)
# Create GitHub PR
GitHub.create_pr(
branch,
f"feat({self.name}): update to version {new_version}",
f"""## Description
Update for **{self.desc}**: update to version [{new_version}]({status['head_url']}).
Check out the [list of changes]({status['compare_url']}).
"""
)
# Clean up repository
Git.clean_repo()
except (CommandRunner.Exception, shutil.Error) as e:
# Handle exception on automatic update
match type(e):
case CommandRunner.Exception:
# Print error message
print(f"Error running {e.stage} command: {e.returncode}", file=sys.stderr)
print(e.stderr, file=sys.stderr)
case shutil.Error:
print(f"Error copying files: {e}", file=sys.stderr)
try:
Git.clean_repo()
except CommandRunner.Exception as e:
print(f"Error reverting repository to clean state: {e}", file=sys.stderr)
sys.exit(1)
# Create a GitHub issue to notify maintainer
title = f"{self.path}: update to {new_version}"
body = (
f"""## Description
There is a new version of `{self.name}` {self.kind} available.
New version: [{new_version}]({status['head_url']})
Check out the [list of changes]({status['compare_url']}).
"""
)
print(f"Creating GitHub issue", file=sys.stderr)
print(f"{title}\n\n{body}", file=sys.stderr)
GitHub.create_issue(title, body)
except Exception as e:
print(e, file=sys.stderr)
def __update_yaml(self, new_version: str) -> None:
dep_yaml = DependencyStore.update_dependency_version(self.path, new_version)
DependencyStore.write_store(DEPS_YAML_FILE, dep_yaml)
def __apply_upstream_changes(self) -> None:
# Patterns to ignore in copying files from upstream repo
GLOBAL_IGNORE = [
".git",
".github",
".gitignore"
]
path = os.path.abspath(self.path)
precopy = self.values.get("precopy")
postcopy = self.values.get("postcopy")
repo = self.values["repo"]
branch = self.values["branch"]
remote_url = f"https://github.com/{repo}.git"
repo_dir = os.path.join(TMP_DIR, repo)
# Clone repository
Git.clone(remote_url, branch, repo_dir, reclone=True)
# Run precopy on tmp repo
if precopy is not None:
print("Running precopy script:", end="\n ", file=sys.stderr)
print(precopy.replace("\n", "\n ", precopy.count("\n") - 1), file=sys.stderr)
CommandRunner.run_or_fail(["bash", "-c", precopy], cwd=repo_dir, stage="Precopy")
# Copy files from upstream repo
print(f"Copying files from {repo_dir} to {path}", file=sys.stderr)
shutil.copytree(repo_dir, path, dirs_exist_ok=True, ignore=shutil.ignore_patterns(*GLOBAL_IGNORE))
# Run postcopy on our repository
if postcopy is not None:
print("Running postcopy script:", end="\n ", file=sys.stderr)
print(postcopy.replace("\n", "\n ", postcopy.count("\n") - 1), file=sys.stderr)
CommandRunner.run_or_fail(["bash", "-c", postcopy], cwd=path, stage="Postcopy")
class Git:
default_branch = "master"
@staticmethod
def clone(remote_url: str, branch: str, repo_dir: str, reclone=False):
# If repo needs to be fresh
if reclone and os.path.exists(repo_dir):
shutil.rmtree(repo_dir)
# Clone repo in tmp directory and checkout branch
if not os.path.exists(repo_dir):
print(f"Cloning {remote_url} to {repo_dir} and checking out {branch}", file=sys.stderr)
CommandRunner.run_or_fail(["git", "clone", "--depth=1", "-b", branch, remote_url, repo_dir], stage="Clone")
@staticmethod
def create_branch(path: str, version: str):
# Get current branch name
result = CommandRunner.run_or_fail(["git", "rev-parse", "--abbrev-ref", "HEAD"], stage="GetDefaultBranch")
Git.default_branch = result.stdout.decode("utf-8").strip()
# Create new branch and return created branch name
branch_name = f"update/{path}/{version}"
CommandRunner.run_or_fail(["git", "checkout", "-b", branch_name], stage="CreateBranch")
return branch_name
@staticmethod
def add_and_commit(scope: str, version: str):
user_name = os.environ.get("GIT_APP_NAME")
user_email = os.environ.get("GIT_APP_EMAIL")
# Add all files to git staging
CommandRunner.run_or_fail(["git", "add", "-A", "-v"], stage="AddFiles")
# Reset environment and git config
clean_env = os.environ.copy()
clean_env["LANG"]="C.UTF-8"
clean_env["GIT_CONFIG_GLOBAL"]="/dev/null"
clean_env["GIT_CONFIG_NOSYSTEM"]="1"
# Commit with settings above
CommandRunner.run_or_fail([
"git",
"-c", f"user.name={user_name}",
"-c", f"user.email={user_email}",
"commit",
"-m", f"feat({scope}): update to {version}"
], stage="CreateCommit", env=clean_env)
@staticmethod
def push(branch: str):
CommandRunner.run_or_fail(["git", "push", "-u", "origin", branch], stage="PushBranch")
@staticmethod
def clean_repo():
CommandRunner.run_or_fail(["git", "reset", "--hard", "HEAD"], stage="ResetRepository")
CommandRunner.run_or_fail(["git", "checkout", Git.default_branch], stage="CheckoutDefaultBranch")
class GitHub:
@staticmethod
def check_newer_tag(repo, current_tag) -> UpdateStatus:
# GET /repos/:owner/:repo/git/refs/tags
url = f"https://api.github.com/repos/{repo}/git/refs/tags"
# Send a GET request to the GitHub API
response = requests.get(url)
# If the request was successful
if response.status_code == 200:
# Parse the JSON response
data = response.json()
if len(data) == 0:
return {
"has_updates": False,
}
latest_ref = data[-1]
latest_tag = latest_ref["ref"].replace("refs/tags/", "")
if latest_tag == current_tag:
return {
"has_updates": False,
}
return {
"has_updates": True,
"version": latest_tag,
"compare_url": f"https://github.com/{repo}/compare/{current_tag}...{latest_tag}",
"head_ref": latest_ref["object"]["sha"],
"head_url": f"https://github.com/{repo}/releases/tag/{latest_tag}",
}
else:
# If the request was not successful, raise an exception
raise Exception(f"GitHub API request failed with status code {response.status_code}: {response.json()}")
@staticmethod
def check_updates(repo, branch, version) -> UpdateStatus:
# TODO: add support for semver updating (based on tags)
# Check if upstream github repo has a new version
# GitHub API URL for comparing two commits
url = f"https://api.github.com/repos/{repo}/compare/{version}...{branch}"
# Send a GET request to the GitHub API
response = requests.get(url)
# If the request was successful
if response.status_code == 200:
# Parse the JSON response
data = response.json()
# If the base is behind the head, there is a newer version
has_updates = data["status"] != "identical"
if not has_updates:
return {
"has_updates": False,
}
return {
"has_updates": data["status"] != "identical",
"version": data["commits"][-1]["sha"],
"compare_url": data["permalink_url"],
"head_ref": data["commits"][-1]["sha"],
"head_url": data["commits"][-1]["html_url"]
}
else:
# If the request was not successful, raise an exception
raise Exception(f"GitHub API request failed with status code {response.status_code}: {response.json()}")
@staticmethod
def create_issue(title: str, body: str) -> None:
cmd = [
"gh",
"issue",
"create",
"-t", title,
"-b", body
]
CommandRunner.run_or_fail(cmd, stage="CreateIssue")
@staticmethod
def create_pr(branch: str, title: str, body: str) -> None:
cmd = [
"gh",
"pr",
"create",
"-B", Git.default_branch,
"-H", branch,
"-t", title,
"-b", body
]
CommandRunner.run_or_fail(cmd, stage="CreatePullRequest")
def main():
# Load the YAML file
with open(DEPS_YAML_FILE, "r") as yaml_file:
data: DependencyYAML = yaml.safe_load(yaml_file)
if "dependencies" not in data:
raise Exception(f"dependencies.yml not properly formatted")
# Cache YAML version
DependencyStore.set(data)
dependencies = data["dependencies"]
for path in dependencies:
dependency = Dependency(path, dependencies[path])
dependency.update_or_notify()
if __name__ == "__main__":
main()