Juju Charm - Barbican
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#!/usr/bin/env python3
# Copyright 2016 Canonical Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import sys
# Load modules from $CHARM_DIR/lib
sys.path.append('lib')
from charms.layer import basic
basic.bootstrap_charm_deps()
basic.init_config_states()
import charms.reactive as reactive
import charmhelpers.core.hookenv as hookenv
import charms_openstack.charm
# import the barbican module to get the charm definitions created.
import charm.openstack.barbican # noqa
def generate_mkek_action(*args):
"""Generate an MKEK in the backend HSM"""
# try and get the reactive relation instance for hsm:
# We only do this because there's no @action(<name>) yet that we could
# access from the reactive file.
hsm = reactive.RelationBase.from_state('hsm.available')
if hsm is None:
hookenv.action_fail(
"Can't generate an MKEK in associated HSM because HSM is not "
"available.")
return
with charms_openstack.charm.provide_charm_instance as barbican_charm:
barbican_charm.generate_mkek(hsm)
def generate_hmac_action(*args):
"""Generate an HMAC in the backend HSM"""
# try and get the reactive relation instance for hsm:
# We only do this because there's no @action(<name>) yet that we could
# access from the reactive file.
hsm = reactive.RelationBase.from_state('hsm.available')
if hsm is None:
hookenv.action_fail(
"Can't generate an HMAC in associated HSM because HSM is not "
"available.")
with charms_openstack.charm.provide_charm_instance as barbican_charm:
barbican_charm.generate_hmac(hsm)
# Actions to function mapping, to allow for illegal python action names that
# can map to a python function.
ACTIONS = {
"generate-mkek": generate_mkek_action,
"generate-hmac": generate_hmac_action,
}
def main(args):
action_name = os.path.basename(args[0])
try:
action = ACTIONS[action_name]
except KeyError:
return "Action %s undefined" % action_name
else:
try:
action(args)
except Exception as e:
hookenv.action_fail(str(e))
if __name__ == "__main__":
sys.exit(main(sys.argv))