install_jenkins_plugins.py

#!/usr/bin/python

import json
import os
import re
import requests
from shutil import copyfile
from tempfile import mkdtemp

update_center_url = 'https://updates.jenkins.io/update-center.json'

with open('plugins.txt', 'r') as f:
    print('fetching the update-center.json')
    ucjson = requests.get(update_center_url)
    ucjson.raise_for_status()
    js = json.loads(re.search('updateCenter.post\((.*)\);', ucjson.text, re.S).group(1))
    if js.get('plugins') is None:
        raise ValueError('The returned json does not contain the \'plugins\' key')
    tempdir = mkdtemp(prefix='plugins_')
    def install_plugins(plugin_list):
        plugin = None
        for i in plugin_list:
            if isinstance(i, str):
                plugin = i.strip()
            if isinstance(i, dict):
                plugin = i['name']
            try:
                url = js['plugins'][plugin]['url']
                ver = js['plugins'][plugin]['version']
                dep = [i for i in js['plugins'][plugin].get('dependencies') if i['optional'] == False]

            except(KeyError):
                print('WARNING: {0} not found in UpdateCenter'.format(plugin))
                continue
            if os.path.isfile('/var/jenkins_home/plugins/{0}.hpi'.format(plugin)):
                print('{0} already installed, skipping'.format(plugin))
                continue
            else:
                print('Installing: {0}'.format(plugin))
                p = requests.get(url)
                p.raise_for_status()
                pfn = '{0}/{1}.hpi'.format(tempdir, plugin) 
                with open(pfn, 'wb') as pf:
                    pf.write(p.content)
                copyfile(pfn, '/var/jenkins_home/plugins/{0}.hpi'.format(plugin))
                if len(dep) > 0:
                    print('installing dependencies: {0}'.format(dep))
                    install_plugins(plugin_list=dep)
    install_plugins(f)