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stack-orchestrator/app/build_containers.py

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# Copyright © 2022, 2023 Cerc
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# 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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# Builds or pulls containers for the system components
# env vars:
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# CERC_REPO_BASE_DIR defaults to ~/cerc
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# TODO: display the available list of containers; allow re-build of either all or specific containers
import os
import sys
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from decouple import config
import subprocess
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import click
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import importlib.resources
from pathlib import Path
from .util import include_exclude_check, get_parsed_stack_config
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# TODO: find a place for this
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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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@click.command()
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@click.option('--include', help="only build these containers")
@click.option('--exclude', help="don\'t build these containers")
@click.option("--force-rebuild", is_flag=True, default=False, help="Override dependency checking -- always rebuild")
@click.option("--extra-build-args", help="Supply extra arguments to build")
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@click.pass_context
def command(ctx, include, exclude, force_rebuild, extra_build_args):
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'''build the set of containers required for a complete stack'''
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quiet = ctx.obj.quiet
verbose = ctx.obj.verbose
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dry_run = ctx.obj.dry_run
debug = ctx.obj.debug
local_stack = ctx.obj.local_stack
stack = ctx.obj.stack
continue_on_error = ctx.obj.continue_on_error
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# See: https://stackoverflow.com/questions/25389095/python-get-path-of-root-project-structure
container_build_dir = Path(__file__).absolute().parent.joinpath("data", "container-build")
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if local_stack:
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dev_root_path = os.getcwd()[0:os.getcwd().rindex("stack-orchestrator")]
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):
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print('Dev root directory doesn\'t exist, creating')
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# See: https://stackoverflow.com/a/20885799/1701505
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from . import data
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with importlib.resources.open_text(data, "container-image-list.txt") as container_list_file:
all_containers = container_list_file.read().splitlines()
containers_in_scope = []
if stack:
stack_config = get_parsed_stack_config(stack)
containers_in_scope = stack_config['containers']
else:
containers_in_scope = all_containers
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if verbose:
print(f'Containers: {containers_in_scope}')
if stack:
print(f"Stack: {stack}")
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# TODO: make this configurable
container_build_env = {
"CERC_NPM_REGISTRY_URL": config("CERC_NPM_REGISTRY_URL", default="http://gitea.local:3000/api/packages/cerc-io/npm/"),
"CERC_NPM_AUTH_TOKEN": config("CERC_NPM_AUTH_TOKEN", default=""),
"CERC_REPO_BASE_DIR": dev_root_path,
"CERC_CONTAINER_BASE_DIR": container_build_dir,
"CERC_HOST_UID": f"{os.getuid()}",
"CERC_HOST_GID": f"{os.getgid()}",
"DOCKER_BUILDKIT": "0"
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}
container_build_env.update({"CERC_SCRIPT_DEBUG": "true"} if debug else {})
container_build_env.update({"CERC_FORCE_REBUILD": "true"} if force_rebuild else {})
container_build_env.update({"CERC_CONTAINER_EXTRA_BUILD_ARGS": extra_build_args} if extra_build_args else {})
docker_host_env = os.getenv("DOCKER_HOST")
if docker_host_env:
container_build_env.update({"DOCKER_HOST": docker_host_env})
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def process_container(container):
if not quiet:
print(f"Building: {container}")
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build_dir = os.path.join(container_build_dir, container.replace("/", "-"))
build_script_filename = os.path.join(build_dir, "build.sh")
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if verbose:
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print(f"Build script filename: {build_script_filename}")
if os.path.exists(build_script_filename):
build_command = build_script_filename
else:
if verbose:
print(f"No script file found: {build_script_filename}, using default build script")
repo_dir = container.split('/')[1]
# TODO: make this less of a hack -- should be specified in some metadata somewhere
# Check if we have a repo for this container. If not, set the context dir to the container-build subdir
repo_full_path = os.path.join(dev_root_path, repo_dir)
repo_dir_or_build_dir = repo_full_path if os.path.exists(repo_full_path) else build_dir
build_command = os.path.join(container_build_dir, "default-build.sh") + f" {container}:local {repo_dir_or_build_dir}"
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if not dry_run:
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if verbose:
print(f"Executing: {build_command} with environment: {container_build_env}")
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build_result = subprocess.run(build_command, shell=True, env=container_build_env)
if verbose:
print(f"Return code is: {build_result.returncode}")
if build_result.returncode != 0:
print(f"Error running build for {container}")
if not continue_on_error:
print("FATAL Error: container build failed and --continue-on-error not set, exiting")
sys.exit(1)
else:
print("****** Container Build Error, continuing because --continue-on-error is set")
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else:
print("Skipped")
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for container in containers_in_scope:
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if include_exclude_check(container, include, exclude):
process_container(container)
else:
if verbose:
print(f"Excluding: {container}")