stack-orchestrator/app/setup_repositories.py

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# Copyright © 2022 Cerc
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http:#www.gnu.org/licenses/>.
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# env vars:
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# CERC_REPO_BASE_DIR defaults to ~/cerc
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import os
import sys
from decouple import config
import git
from tqdm import tqdm
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import click
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import importlib.resources
from pathlib import Path
import yaml
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from app.util import include_exclude_check
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class GitProgress(git.RemoteProgress):
def __init__(self):
super().__init__()
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self.pbar = tqdm(unit='B', ascii=True, unit_scale=True)
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def update(self, op_code, cur_count, max_count=None, message=''):
self.pbar.total = max_count
self.pbar.n = cur_count
self.pbar.refresh()
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def is_git_repo(path):
try:
_ = git.Repo(path).git_dir
return True
except git.exc.InvalidGitRepositoryError:
return False
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# TODO: find a place for this in the context of click
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# parser = argparse.ArgumentParser(
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# epilog="Config provided either in .env or settings.ini or env vars: CERC_REPO_BASE_DIR (defaults to ~/cerc)"
# )
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def branch_strip(s):
return s.split('@')[0]
def host_and_path_for_repo(fully_qualified_repo):
repo_branch_split = fully_qualified_repo.split("@")
repo_branch = repo_branch_split[-1] if len(repo_branch_split) > 1 else None
repo_host_split = repo_branch_split[0].split("/")
# Legacy unqualified repo means github
if len(repo_host_split) == 2:
return "github.com", "/".join(repo_host_split), repo_branch
else:
if len(repo_host_split) == 3:
# First part is the host
return repo_host_split[0], "/".join(repo_host_split[1:]), repo_branch
# See: https://stackoverflow.com/questions/18659425/get-git-current-branch-tag-name
def _get_repo_current_branch_or_tag(full_filesystem_repo_path):
current_repo_branch_or_tag = "***UNDETERMINED***"
is_branch = False
try:
current_repo_branch_or_tag = git.Repo(full_filesystem_repo_path).active_branch.name
is_branch = True
except TypeError as error:
# This means that the current ref is not a branch, so possibly a tag
# Let's try to get the tag
current_repo_branch_or_tag = git.Repo(full_filesystem_repo_path).git.describe("--tags", "--exact-match")
# Note that git is assymetric -- the tag you told it to check out may not be the one
# you get back here (if there are multiple tags associated with the same commit)
return current_repo_branch_or_tag, is_branch
# TODO: fix the messy arg list here
def process_repo(verbose, quiet, dry_run, pull, check_only, git_ssh, dev_root_path, branches_array, fully_qualified_repo):
if verbose:
print(f"Processing repo: {fully_qualified_repo}")
repo_host, repo_path, repo_branch = host_and_path_for_repo(fully_qualified_repo)
git_ssh_prefix = f"git@{repo_host}:"
git_http_prefix = f"https://{repo_host}/"
full_github_repo_path = f"{git_ssh_prefix if git_ssh else git_http_prefix}{repo_path}"
repoName = repo_path.split("/")[-1]
full_filesystem_repo_path = os.path.join(dev_root_path, repoName)
is_present = os.path.isdir(full_filesystem_repo_path)
(current_repo_branch_or_tag, is_branch) = _get_repo_current_branch_or_tag(full_filesystem_repo_path) if is_present else (None, None)
if not quiet:
present_text = f"already exists active {'branch' if is_branch else 'tag'}: {current_repo_branch_or_tag}" if is_present \
else 'Needs to be fetched'
print(f"Checking: {full_filesystem_repo_path}: {present_text}")
# Quick check that it's actually a repo
if is_present:
if not is_git_repo(full_filesystem_repo_path):
print(f"Error: {full_filesystem_repo_path} does not contain a valid git repository")
sys.exit(1)
else:
if pull:
if verbose:
print(f"Running git pull for {full_filesystem_repo_path}")
if not check_only:
if is_branch:
git_repo = git.Repo(full_filesystem_repo_path)
origin = git_repo.remotes.origin
origin.pull(progress=None if quiet else GitProgress())
else:
print(f"skipping pull because this repo checked out a tag")
else:
print("(git pull skipped)")
if not is_present:
# Clone
if verbose:
print(f'Running git clone for {full_github_repo_path} into {full_filesystem_repo_path}')
if not dry_run:
git.Repo.clone_from(full_github_repo_path,
full_filesystem_repo_path,
progress=None if quiet else GitProgress())
else:
print("(git clone skipped)")
# Checkout the requested branch, if one was specified
branch_to_checkout = None
if branches_array:
# Find the current repo in the branches list
print("Checking")
for repo_branch in branches_array:
repo_branch_tuple = repo_branch.split(" ")
if repo_branch_tuple[0] == branch_strip(fully_qualified_repo):
# checkout specified branch
branch_to_checkout = repo_branch_tuple[1]
else:
branch_to_checkout = repo_branch
if branch_to_checkout:
if current_repo_branch_or_tag is None or (current_repo_branch_or_tag and (current_repo_branch_or_tag != branch_to_checkout)):
if not quiet:
print(f"switching to branch {branch_to_checkout} in repo {repo_path}")
git_repo = git.Repo(full_filesystem_repo_path)
# git checkout works for both branches and tags
git_repo.git.checkout(branch_to_checkout)
else:
if verbose:
print(f"repo {repo_path} is already on branch/tag {branch_to_checkout}")
def parse_branches(branches_string):
if branches_string:
result_array = []
branches_directives = branches_string.split(",")
for branch_directive in branches_directives:
split_directive = branch_directive.split("@")
if len(split_directive) != 2:
print(f"Error: branch specified is not valid: {branch_directive}")
sys.exit(1)
result_array.append(f"{split_directive[0]} {split_directive[1]}")
return result_array
else:
return None
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@click.command()
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@click.option("--include", help="only clone these repositories")
@click.option("--exclude", help="don\'t clone these repositories")
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@click.option('--git-ssh', is_flag=True, default=False)
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@click.option('--check-only', is_flag=True, default=False)
@click.option('--pull', is_flag=True, default=False)
@click.option("--branches", help="override branches for repositories")
@click.option('--branches-file', help="checkout branches specified in this file")
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@click.pass_context
def command(ctx, include, exclude, git_ssh, check_only, pull, branches, branches_file):
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'''git clone the set of repositories required to build the complete system from source'''
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quiet = ctx.obj.quiet
verbose = ctx.obj.verbose
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dry_run = ctx.obj.dry_run
stack = ctx.obj.stack
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branches_array = []
# TODO: branches file needs to be re-worked in the context of stacks
if branches_file:
if branches:
print("Error: can't specify both --branches and --branches-file")
sys.exit(1)
else:
if verbose:
print(f"loading branches from: {branches_file}")
with open(branches_file) as branches_file_open:
branches_array = branches_file_open.read().splitlines()
print(f"branches: {branches}")
if branches:
if branches_file:
print("Error: can't specify both --branches and --branches-file")
sys.exit(1)
else:
branches_array = parse_branches(branches)
if branches_array and verbose:
print(f"Branches are: {branches_array}")
local_stack = ctx.obj.local_stack
if local_stack:
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dev_root_path = os.getcwd()[0:os.getcwd().rindex("stack-orchestrator")]
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print(f"Local stack dev_root_path (CERC_REPO_BASE_DIR) overridden to: {dev_root_path}")
else:
dev_root_path = os.path.expanduser(config("CERC_REPO_BASE_DIR", default="~/cerc"))
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if not quiet:
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print(f"Dev Root is: {dev_root_path}")
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if not os.path.isdir(dev_root_path):
if not quiet:
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print('Dev root directory doesn\'t exist, creating')
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os.makedirs(dev_root_path)
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# See: https://stackoverflow.com/a/20885799/1701505
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from app import data
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with importlib.resources.open_text(data, "repository-list.txt") as repository_list_file:
all_repos = repository_list_file.read().splitlines()
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repos_in_scope = []
if stack:
# In order to be compatible with Python 3.8 we need to use this hack to get the path:
# See: https://stackoverflow.com/questions/25389095/python-get-path-of-root-project-structure
stack_file_path = Path(__file__).absolute().parent.joinpath("data", "stacks", stack, "stack.yml")
with stack_file_path:
stack_config = yaml.safe_load(open(stack_file_path, "r"))
# TODO: syntax check the input here
repos_in_scope = stack_config['repos']
else:
repos_in_scope = all_repos
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if verbose:
print(f"Repos: {repos_in_scope}")
if stack:
print(f"Stack: {stack}")
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repos = []
for repo in repos_in_scope:
if include_exclude_check(branch_strip(repo), include, exclude):
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repos.append(repo)
else:
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if verbose:
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print(f"Excluding: {repo}")
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for repo in repos:
try:
process_repo(verbose, quiet, dry_run, pull, check_only, git_ssh, dev_root_path, branches_array, repo)
except git.exc.GitCommandError as error:
print(f"\n******* git command returned error exit status:\n{error}")
sys.exit(1)