pvc/api-daemon/pvcapid/Daemon.py

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#!/usr/bin/env python3
# Daemon.py - PVC HTTP API daemon
# Part of the Parallel Virtual Cluster (PVC) system
#
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# Copyright (C) 2018-2021 Joshua M. Boniface <joshua@boniface.me>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, version 3.
#
# 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
###############################################################################
import os
import yaml
from distutils.util import strtobool as dustrtobool
# Daemon version
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version = '0.9.32'
# API version
API_VERSION = 1.0
##########################################################
# Helper Functions
##########################################################
def strtobool(stringv):
if stringv is None:
return False
if isinstance(stringv, bool):
return bool(stringv)
try:
return bool(dustrtobool(stringv))
except Exception:
return False
##########################################################
# Configuration Parsing
##########################################################
# Parse the configuration file
try:
pvcapid_config_file = os.environ['PVC_CONFIG_FILE']
except Exception:
print('Error: The "PVC_CONFIG_FILE" environment variable must be set before starting pvcapid.')
exit(1)
print('Loading configuration from file "{}"'.format(pvcapid_config_file))
# Read in the config
try:
with open(pvcapid_config_file, 'r') as cfgfile:
o_config = yaml.load(cfgfile, Loader=yaml.BaseLoader)
except Exception as e:
print('ERROR: Failed to parse configuration file: {}'.format(e))
exit(1)
try:
# Create the config object
config = {
'debug': strtobool(o_config['pvc']['debug']),
'coordinators': o_config['pvc']['coordinators'],
'listen_address': o_config['pvc']['api']['listen_address'],
'listen_port': int(o_config['pvc']['api']['listen_port']),
'auth_enabled': strtobool(o_config['pvc']['api']['authentication']['enabled']),
'auth_secret_key': o_config['pvc']['api']['authentication']['secret_key'],
'auth_tokens': o_config['pvc']['api']['authentication']['tokens'],
'ssl_enabled': strtobool(o_config['pvc']['api']['ssl']['enabled']),
'ssl_key_file': o_config['pvc']['api']['ssl']['key_file'],
'ssl_cert_file': o_config['pvc']['api']['ssl']['cert_file'],
'database_host': o_config['pvc']['provisioner']['database']['host'],
'database_port': int(o_config['pvc']['provisioner']['database']['port']),
'database_name': o_config['pvc']['provisioner']['database']['name'],
'database_user': o_config['pvc']['provisioner']['database']['user'],
'database_password': o_config['pvc']['provisioner']['database']['pass'],
'queue_host': o_config['pvc']['provisioner']['queue']['host'],
'queue_port': o_config['pvc']['provisioner']['queue']['port'],
'queue_path': o_config['pvc']['provisioner']['queue']['path'],
'storage_hosts': o_config['pvc']['provisioner']['ceph_cluster']['storage_hosts'],
'storage_domain': o_config['pvc']['provisioner']['ceph_cluster']['storage_domain'],
'ceph_monitor_port': o_config['pvc']['provisioner']['ceph_cluster']['ceph_monitor_port'],
'ceph_storage_secret_uuid': o_config['pvc']['provisioner']['ceph_cluster']['ceph_storage_secret_uuid']
}
# Use coordinators as storage hosts if not explicitly specified
if not config['storage_hosts']:
config['storage_hosts'] = config['coordinators']
except Exception as e:
print('ERROR: Failed to load configuration: {}'.format(e))
exit(1)
##########################################################
# Entrypoint
##########################################################
def entrypoint():
import pvcapid.flaskapi as pvc_api # noqa: E402
if config['ssl_enabled']:
context = (config['ssl_cert_file'], config['ssl_key_file'])
else:
context = None
# Print our startup messages
print('')
print('|----------------------------------------------------------|')
print('| |')
print('| ███████████ ▜█▙ ▟█▛ █████ █ █ █ |')
print('| ██ ▜█▙ ▟█▛ ██ |')
print('| ███████████ ▜█▙ ▟█▛ ██ |')
print('| ██ ▜█▙▟█▛ ███████████ |')
print('| |')
print('|----------------------------------------------------------|')
print('| Parallel Virtual Cluster API daemon v{0: <19} |'.format(version))
print('| Debug: {0: <49} |'.format(str(config['debug'])))
print('| API version: v{0: <42} |'.format(API_VERSION))
print('| Listen: {0: <48} |'.format('{}:{}'.format(config['listen_address'], config['listen_port'])))
print('| SSL: {0: <51} |'.format(str(config['ssl_enabled'])))
print('| Authentication: {0: <40} |'.format(str(config['auth_enabled'])))
print('|----------------------------------------------------------|')
print('')
pvc_api.app.run(config['listen_address'], config['listen_port'], threaded=True, ssl_context=context)