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#!/usr/bin/env python
"""Assess juju blocks prevent users from making changes and models"""
from __future__ import print_function
import argparse
import logging
import sys
import yaml
from assess_min_version import (
JujuAssertionError
)
from deploy_stack import (
BootstrapManager,
deploy_dummy_stack,
)
from utility import (
add_basic_testing_arguments,
configure_logging,
wait_for_removed_services,
)
__metaclass__ = type
log = logging.getLogger("assess_block")
def get_block_list(client):
"""Return a list of blocks and their status."""
return yaml.safe_load(client.get_juju_output(
'block list', '--format', 'yaml'))
def make_block_list(client, des_env, rm_obj, all_changes):
"""Return a manually made list of blocks and their status"""
block_list = [
{'block': client.destroy_model_command, 'enabled': des_env},
{'block': 'remove-object', 'enabled': rm_obj},
{'block': 'all-changes', 'enabled': all_changes}]
for block in block_list:
if block['enabled']:
block['message'] = ''
return block_list
def test_blocked(client, command, args, include_e=True):
"""Test if a command is blocked as expected"""
try:
if command == 'deploy':
client.deploy(args)
elif command == 'remove-service':
client.remove_service(args)
else:
client.juju(command, args, include_e=include_e)
raise JujuAssertionError()
except Exception:
pass
def assess_block_destroy_model(client, charm_series):
"""Test block destroy-model
When "block destroy-model" is set,
the model cannot be destroyed, but objects
can be added, related, and removed.
"""
client.juju('block ' + client.destroy_model_command, ())
block_list = get_block_list(client)
if block_list != make_block_list(client, True, False, False):
raise JujuAssertionError(block_list)
test_blocked(client, client.destroy_model_command,
('-y', client.env.environment), include_e=False)
# Adding, relating, and removing are not blocked.
deploy_dummy_stack(client, charm_series)
def assess_block_remove_object(client, charm_series):
"""Test block remove-object
When "block remove-object" is set,
objects can be added and related, but they
cannot be removed or the model/environment deleted.
"""
client.juju('block remove-object', ())
block_list = get_block_list(client)
if block_list != make_block_list(client, False, True, False):
raise JujuAssertionError(block_list)
test_blocked(client, client.destroy_model_command,
('-y', client.env.environment), include_e=False)
# Adding and relating are not blocked.
deploy_dummy_stack(client, charm_series)
test_blocked(client, 'remove-service', 'dummy-source')
test_blocked(client, 'remove-unit', ('dummy-source/1',))
test_blocked(client, 'remove-relation', ('dummy-source', 'dummy-sink'))
def assess_block_all_changes(client, charm_series):
"""Test Block Functionality: block all-changes"""
client.juju('remove-relation', ('dummy-source', 'dummy-sink'))
client.juju('block all-changes', ())
block_list = get_block_list(client)
if block_list != make_block_list(client, False, False, True):
raise JujuAssertionError(block_list)
test_blocked(client, 'add-relation', ('dummy-source', 'dummy-sink'))
test_blocked(client, 'unexpose', ('dummy-sink',))
test_blocked(client, 'remove-service', 'dummy-sink')
client.juju('unblock all-changes', ())
client.juju('unexpose', ('dummy-sink',))
client.juju('block all-changes', ())
test_blocked(client, 'expose', ('dummy-sink',))
client.juju('unblock all-changes', ())
client.remove_service('dummy-sink')
wait_for_removed_services(client, 'dummy-sink')
client.juju('block all-changes', ())
test_blocked(client, 'deploy', ('dummy-sink',))
test_blocked(client, client.destroy_model_command,
('-y', client.env.environment), include_e=False)
def assess_unblock(client, type):
"""Test Block Functionality
unblock destroy-model/remove-object/all-changes."""
client.juju('unblock ' + type, ())
block_list = get_block_list(client)
if block_list != make_block_list(client, False, False, False):
raise JujuAssertionError(block_list)
if type == client.destroy_model_command:
client.remove_service('dummy-source')
wait_for_removed_services(client, 'dummy-source')
client.remove_service('dummy-sink')
wait_for_removed_services(client, 'dummy-sink')
def assess_block(client, charm_series):
"""Test Block Functionality:
block/unblock destroy-model/remove-object/all-changes.
"""
block_list = get_block_list(client)
client.wait_for_started()
expected_none_blocked = make_block_list(client, False, False, False)
if block_list != expected_none_blocked:
raise JujuAssertionError(block_list)
assess_block_destroy_model(client, charm_series)
assess_unblock(client, client.destroy_model_command)
assess_block_remove_object(client, charm_series)
assess_unblock(client, 'remove-object')
assess_block_all_changes(client, charm_series)
assess_unblock(client, 'all-changes')
def parse_args(argv):
"""Parse all arguments."""
parser = argparse.ArgumentParser(description="Test Block Functionality")
add_basic_testing_arguments(parser)
parser.set_defaults(series='trusty')
return parser.parse_args(argv)
def main(argv=None):
args = parse_args(argv)
configure_logging(args.verbose)
bs_manager = BootstrapManager.from_args(args)
with bs_manager.booted_context(args.upload_tools):
assess_block(bs_manager.client, bs_manager.series)
return 0
if __name__ == '__main__':
sys.exit(main())
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