grafana/list_bundled_nodejs_packages.py

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#!/usr/bin/env python3
#
# generates Provides: bundled(npm(...)) = ... lines for each declared dependency and devDependency of package.json
#
import os
import sys
import json
import yaml
from packaging import version
def scan_package_json(package_dir):
for root, dirs, files in os.walk(package_dir, topdown=True):
dirs[:] = [d for d in dirs if d not in ["node_modules", "vendor"]]
if "package.json" in files:
yield os.path.join(root, "package.json")
def read_declared_pkgs(package_json_path):
with open(package_json_path) as f:
package_json = json.load(f)
return list(package_json.get("dependencies", {}).keys()) + list(
package_json.get("devDependencies", {}).keys()
)
def read_installed_pkgs(yarn_lock_path):
with open(yarn_lock_path) as f:
lockfile = yaml.safe_load(f)
for pkg_decl, meta in lockfile.items():
for pkg in pkg_decl.split(", "):
if ":" not in pkg:
continue
pkg_name = pkg[: pkg.index("@", 1)]
pkg_version = meta["version"]
yield (pkg_name, pkg_version)
def list_provides(declared_pkgs, installed_pkgs):
for declared_pkg in declared_pkgs:
# there can be multiple versions installed of one package (transitive dependencies)
# but rpm doesn't support Provides: with a single package and multiple versions
# so let's declare the oldest version here
versions = [
version.parse(pkg_version)
for pkg_name, pkg_version in installed_pkgs
if pkg_name == declared_pkg
]
if not versions:
print(f"warning: {declared_pkg} missing in yarn.lock", file=sys.stderr)
continue
oldest_version = sorted(versions)[0]
yield f"Provides: bundled(npm({declared_pkg})) = {oldest_version}"
if __name__ == "__main__":
if len(sys.argv) != 2:
print(f"usage: {sys.argv[0]} package-X.Y.Z/", file=sys.stdout)
sys.exit(1)
package_dir = sys.argv[1]
declared_pkgs = set()
for package_json_path in scan_package_json(package_dir):
declared_pkgs.update(read_declared_pkgs(package_json_path))
installed_pkgs = list(read_installed_pkgs(f"{package_dir}/yarn.lock"))
provides = list_provides(declared_pkgs, installed_pkgs)
for provide in sorted(provides):
print(provide)