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#!/usr/bin/python3
# Copyright 2017-2018 Lars Wirzenius
#
# 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/>.
import logging
import time
import cliapp
import urllib3
import ick2
urllib3.disable_warnings()
logging.captureWarnings(False)
class WorkerManager(cliapp.Application):
def __init__(self, **kwargs):
super().__init__(**kwargs)
self._token = None
def add_settings(self):
self.settings.string(
['client-id'],
'use ID as the client id when authenticatin to IDP',
metavar='ID',
)
self.settings.string(
['client-secret-cmd'],
'run CMD to gget the client secret when authentication to IDP',
metavar='CMD',
)
self.settings.string(
['controller'],
'base URL for the controller',
metavar='URL',
)
self.settings.integer(
['sleep'],
'sleep for SECS seconds if there is no work currently',
metavar='SECS',
default=5,
)
self.settings.string(
['workspace'],
'use DIR as the workspace where commands are run',
metavar='DIR',
default='/var/lib/ick/workspace',
)
self.settings.string(
['systree'],
'use DIR as the system tree for containers',
metavar='DIR',
default='/var/lib/ick/systree',
)
self.settings.boolean(
['verify-tls'],
'verify API provider TLS certificate '
'(default is verify, use --no-verify-tls)',
default=True,
)
def process_args(self, args):
try:
self.main_program(args)
except BaseException as e:
logging.error(str(e), exc_info=True)
raise
def main_program(self, args):
self.settings.require('client-id')
self.settings.require('client-secret-cmd')
self.settings.require('controller')
name = self.settings['client-id']
url = self.settings['controller']
workspace = self.settings['workspace']
systree = self.settings['systree']
secret = self.get_client_secret()
api = ControllerAPI(name, url)
api.set_verify_tls(self.settings['verify-tls'])
api.set_client_creds(name, secret)
worker = Worker(name, api, workspace, systree)
logging.info('Worker manager %s starts, controller is %s', name, url)
api.register()
while True:
work = api.get_work()
if work:
worker.do_work(work)
else:
self.sleep_a_little()
def sleep_a_little(self):
secs = self.settings['sleep']
time.sleep(secs)
def get_client_secret(self):
cmd = self.settings['client-secret-cmd']
output = cliapp.runcmd(['sh', '-c', cmd])
lines = output.splitlines()
return lines[0].strip()
class ControllerAPI:
_scopes = ' '.join([
'uapi_version_get',
'uapi_work_get',
'uapi_work_post',
'uapi_workers_post',
'uapi_blobs_id_get',
'uapi_blobs_id_put',
])
def __init__(self, name, url):
self._cc = ick2.ControllerClient()
self._cc.set_client_name(name)
self._cc.set_controller_url(url)
self._ac = None
self._blobs = None
self._client_id = None
self._client_secret = None
def set_verify_tls(self, verify):
self._cc.set_verify_tls(verify)
def set_client_creds(self, client_id, client_secret):
self._client_id = client_id
self._client_secret = client_secret
def get_token(self):
if self._ac is None:
self._ac = self._cc.get_auth_client()
self._ac.set_client_creds(self._client_id, self._client_secret)
return self._ac.get_token(self._scopes)
def register(self):
self._cc.set_token(self.get_token())
self._cc.register()
def get_work(self):
self._cc.set_token(self.get_token())
return self._cc.get_work()
def report_work(self, work):
self._cc.set_token(self.get_token())
self._cc.report_work(work)
def get_blob_upload_url(self, name):
blobs = self.get_blob_client()
return blobs.url(name)
def upload_blob(self, blob_id, blob):
blobs = self.get_blob_client()
blobs.upload(blob_id, blob)
def download_blob(self, blob_id):
blobs = self.get_blob_client()
return blobs.download(blob_id)
def get_blob_client(self):
if self._blobs is None:
self._blobs = self._cc.get_blob_client()
return self._blobs
class Worker:
def __init__(self, name, api, workspace, systree):
self._name = name
self._api = api
self._workspace = workspace
self._systree = systree
def do_work(self, work):
project_name = work['project']
build_number = work['build_number']
step = work.get('step', {})
params = work.get('parameters', {})
reporter = ick2.Reporter(self._api, work)
af = ick2.ActionFactory(self._systree, self._workspace, reporter)
af.set_token(self._api.get_token())
af.set_blob_url_func(self._api.get_blob_upload_url)
af.add_env_var('LC_ALL', 'C')
af.add_env_var('DEBIAN_FRONTEND', 'noninteractive')
af.add_env_var('BUILD_NUMBER', str(build_number))
action = af.create_action(step, project_name)
exit_code = action.execute(params, step)
if __name__ == '__main__':
WorkerManager(version=ick2.__version__).run()
|
