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stack-orchestrator/app/build_npms.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/>.
# Builds or pulls containers for the system components
# env vars:
# CERC_REPO_BASE_DIR defaults to ~/cerc
import os
import sys
from shutil import rmtree, copytree
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from decouple import config
import click
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import importlib.resources
from python_on_whales import docker, DockerException
from .base import get_stack
from .util import include_exclude_check, get_parsed_stack_config
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builder_js_image_name = "cerc/builder-js:local"
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@click.command()
@click.option('--include', help="only build these packages")
@click.option('--exclude', help="don\'t build these packages")
@click.pass_context
def command(ctx, include, exclude):
'''build the set of npm packages required for a complete stack'''
quiet = ctx.obj.quiet
verbose = ctx.obj.verbose
dry_run = ctx.obj.dry_run
local_stack = ctx.obj.local_stack
debug = ctx.obj.debug
stack = ctx.obj.stack
continue_on_error = ctx.obj.continue_on_error
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_ensure_prerequisites()
# build-npms depends on having access to a writable package registry
# so we check here that it is available
package_registry_stack = get_stack(ctx.obj, "package-registry")
registry_available = package_registry_stack.ensure_available()
if not registry_available:
print("FATAL: no npm registry available for build-npms command")
sys.exit(1)
npm_registry_url = package_registry_stack.get_url()
npm_registry_url_token = config("CERC_NPM_AUTH_TOKEN", default=None)
if not npm_registry_url_token:
print("FATAL: CERC_NPM_AUTH_TOKEN is not defined")
sys.exit(1)
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if local_stack:
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"))
build_root_path = os.path.join(dev_root_path, "build-trees")
if verbose:
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print(f'Dev Root is: {dev_root_path}')
if not os.path.isdir(dev_root_path):
print('Dev root directory doesn\'t exist, creating')
os.makedirs(dev_root_path)
if not os.path.isdir(dev_root_path):
print('Build root directory doesn\'t exist, creating')
os.makedirs(build_root_path)
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# See: https://stackoverflow.com/a/20885799/1701505
from . import data
with importlib.resources.open_text(data, "npm-package-list.txt") as package_list_file:
all_packages = package_list_file.read().splitlines()
packages_in_scope = []
if stack:
stack_config = get_parsed_stack_config(stack)
# TODO: syntax check the input here
packages_in_scope = stack_config['npms']
else:
packages_in_scope = all_packages
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if verbose:
print(f'Packages: {packages_in_scope}')
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def build_package(package):
if not quiet:
print(f"Building npm package: {package}")
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repo_dir = package
repo_full_path = os.path.join(dev_root_path, repo_dir)
# Copy the repo and build that to avoid propagating JS tooling file changes back into the cloned repo
repo_copy_path = os.path.join(build_root_path, repo_dir)
# First delete any old build tree
if os.path.isdir(repo_copy_path):
if verbose:
print(f"Deleting old build tree: {repo_copy_path}")
if not dry_run:
rmtree(repo_copy_path)
# Now copy the repo into the build tree location
if verbose:
print(f"Copying build tree from: {repo_full_path} to: {repo_copy_path}")
if not dry_run:
copytree(repo_full_path, repo_copy_path)
build_command = ["sh", "-c", f"cd /workspace && build-npm-package-local-dependencies.sh {npm_registry_url}"]
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if not dry_run:
if verbose:
print(f"Executing: {build_command}")
# Originally we used the PEP 584 merge operator:
# envs = {"CERC_NPM_AUTH_TOKEN": npm_registry_url_token} | ({"CERC_SCRIPT_DEBUG": "true"} if debug else {})
# but that isn't available in Python 3.8 (default in Ubuntu 20) so for now we use dict.update:
envs = {"CERC_NPM_AUTH_TOKEN": npm_registry_url_token}
envs.update({"CERC_SCRIPT_DEBUG": "true"} if debug else {})
try:
docker.run(builder_js_image_name,
remove=True,
interactive=True,
tty=True,
user=f"{os.getuid()}:{os.getgid()}",
envs=envs,
# TODO: detect this host name in npm_registry_url rather than hard-wiring it
add_hosts=[("gitea.local", "host-gateway")],
volumes=[(repo_copy_path, "/workspace")],
command=build_command
)
# Note that although the docs say that build_result should contain
# the command output as a string, in reality it is always the empty string.
# Since we detect errors via catching exceptions below, we can safely ignore it here.
except DockerException as e:
print(f"Error executing build for {package} in container:\n {e}")
if not continue_on_error:
print("FATAL Error: build failed and --continue-on-error not set, exiting")
sys.exit(1)
else:
print("****** Build Error, continuing because --continue-on-error is set")
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else:
print("Skipped")
for package in packages_in_scope:
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if include_exclude_check(package, include, exclude):
build_package(package)
else:
if verbose:
print(f"Excluding: {package}")
def _ensure_prerequisites():
# Check that the builder-js container is available and
# Tell the user how to build it if not
images = docker.image.list(builder_js_image_name)
if len(images) == 0:
print(f"FATAL: builder image: {builder_js_image_name} is required but was not found")
print("Please run this command to create it: laconic-so --stack build-support build-containers")
sys.exit(1)