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) 2018-2022 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 ssl import SSLContext, TLSVersion
from distutils.util import strtobool as dustrtobool
# Daemon version
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version = "0.9.59"
# 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 = SSLContext()
context.minimum_version = TLSVersion.TLSv1
context.get_ca_certs()
context.load_cert_chain(config["ssl_cert_file"], keyfile=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,
)