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#!/usr/bin/env python
# Ubuntu CI Engine
# Copyright 2014 Canonical Ltd.
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU Affero General Public License version 3, as
# published by the Free Software Foundation.
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranties of
# MERCHANTABILITY, SATISFACTORY QUALITY, 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/>.
import argparse
import logging
import json
import os
import re
import sys
import time
import urllib2
from ci_utils import jenkins_utils
from ci_utils import dump_stack
MAX_RETRIES = 15
SERVICE_PATH = os.path.join(os.path.dirname(__file__), '../../juju-relations')
# set up a root logger for everything
stdout_handler = logging.StreamHandler(stream=sys.stdout)
formatter = logging.Formatter(
'%(asctime)s %(levelname)-5s %(name)s: %(message)s', datefmt='%H:%M:%S')
stdout_handler.setFormatter(formatter)
l = logging.getLogger('')
l.addHandler(stdout_handler)
l.setLevel(logging.DEBUG)
logger = logging.getLogger('lander_get_next_ticket')
def _get(url):
resp = urllib2.urlopen(url)
resp = resp.read()
return json.loads(resp)
def _get_parser():
parser = argparse.ArgumentParser(
description='Wraps the REST API calls with a progress queue monitor.')
parser.add_argument('--service-name',
required=True,
help='The name of the service to connect.')
parser.add_argument('--service-port',
required=True,
help='The port number of the service to connect.')
parser.add_argument('--delay',
required=True,
type=int,
help='The delay in seconds between poll attempts.')
return parser
def handle_next_ticket(jenkins_config, service_url):
if jenkins_utils.is_master_job_running(jenkins_config):
logging.info('{} is building, skip next ticket '
'request.'.format(jenkins_config['lander_master_job']))
else:
logging.info('Jenkins is available')
url = '{}/api/v1/next/'.format(service_url)
data = _get(url)
return data
def poll(jenkins_config, service_url):
rc = 1
try:
results = handle_next_ticket(jenkins_config, service_url)
if results:
out_data = results.get('objects', None)
if out_data:
out_data = out_data[0]
request_id = out_data['id']
logging.info('request_id: {}'.format(request_id))
logging.info('request_parameters: {}'.format(out_data))
job_parameters = {
'request_id': request_id,
}
jenkins_utils.trigger_build(jenkins_config, job_parameters)
rc = 0
except urllib2.HTTPError as e:
body = e.read()
logging.exception('Unable to handle request: %s: %s', e, body)
results = {
'result': 'ERROR',
'resp_code': e.reason,
'resp_body': body,
}
except Exception as e:
logging.exception('Unexpected error: {}'.format(e))
results = {
'result': 'FAILED',
'error': e.message,
}
return rc
def get_service_url(service_name, service_port):
for root, dirs, files in os.walk(SERVICE_PATH):
for name in files:
with open(os.path.join(root, name)) as f:
for line in f.readlines():
if re.match('%s:' % service_name, line):
(junk, url) = line.split(':')
return 'http://{}:{}'.format(url.strip(),
service_port)
def main(args):
retries = MAX_RETRIES
logging.info('Starting lander-jenkins worker.')
while retries:
logging.info('Trying to acquire jenkins config.')
jenkins_config = jenkins_utils.get_config()
if not jenkins_config:
retries -= 1
logging.error('Unable to acquire jenkins configuration, '
'will retry {} more times.'.format(retries))
time.sleep(args.delay)
else:
break
if not retries:
logging.error('Failed to acquire jenkins configuration, '
'no more retries.')
return -1
retries = MAX_RETRIES
while retries:
logging.info('Trying to acquire ticket service url.')
service_url = get_service_url(args.service_name, args.service_port)
if not service_url:
retries -= 1
logging.error('Unable to acquire ticket service url, '
'will retry {} more times.'.format(retries))
time.sleep(args.delay)
else:
break
if not retries:
logging.error('Failed to acquire ticket service url, '
'no more retries.')
return -1
while True:
logging.info('Polling for a new ticket')
ret = poll(jenkins_config, service_url)
if ret:
logging.error('Breaking out of polling loop')
return ret
time.sleep(args.delay)
if __name__ == '__main__':
dump_stack.install_stack_dump_signal()
args = _get_parser().parse_args()
exit(main(args))
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