Created
November 19, 2018 17:07
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Find transitive dependencies of a set of Jenkins plugins using update centre metadata
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#!/usr/bin/env python3 | |
# Finds the transitive closure of dependencies for a set of jenkins plugins. | |
# The jenkins puppet module does not resolve transitive dependencies, so all | |
# the transitive dependencies need to be listed in the yaml of plugins to | |
# install. | |
# | |
# This script reads JSON from the update centre for the relevant version of | |
# Jenkins. For Jenkins 2.60, run the following before this script: | |
# curl -sLO http://updates.jenkins-ci.org/2.60/update-center.actual.json | |
# | |
# The output of this script can be copied and pasted into the yaml (but may | |
# need the indentation adjusted). | |
from json import load | |
from yaml import dump | |
desired = [ | |
'build-monitor-plugin', | |
'description-setter', | |
'git', | |
'htmlpublisher', | |
'job-dsl', | |
'ldap', | |
'matrix-auth', | |
'promoted-builds', | |
'slack', | |
'sonar', | |
'testng-plugin', | |
'workflow-aggregator', | |
] | |
def collect(plugins, plugin, dependencies=[]): | |
current = plugins.get(plugin) | |
if current is None: | |
print('Unknown ', plugin) | |
declared = current.get('dependencies') | |
deps = [d.get('name') for d in declared if not d.get('optional')] | |
dependencies.append(plugin) | |
for p in deps: | |
if p not in dependencies: | |
collect(plugins, p, dependencies) | |
def latest_versions(available, required): | |
return {plugin: available.get(plugin).get('version') | |
for plugin in required} | |
def to_yaml(versions): | |
yaml = {plugin: {"version": version} | |
for plugin, version in versions.items()} | |
return dump(yaml, default_flow_style=None) | |
def main(): | |
with open('update-center.actual.json', 'r') as json: | |
updates = load(json) | |
plugins = updates.get('plugins') | |
collected = [] | |
for plugin in desired: | |
collect(plugins, plugin, collected) | |
latest = latest_versions(plugins, collected) | |
print(to_yaml(latest)) | |
if __name__ == "__main__": | |
main() |
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