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#!/usr/bin/env python
"""Assess juju charm storage."""
from __future__ import print_function
import os
import argparse
import copy
import json
import logging
import sys
from deploy_stack import (
BootstrapManager,
)
from jujucharm import (
Charm,
local_charm_path,
)
from utility import (
add_basic_testing_arguments,
configure_logging,
JujuAssertionError,
temp_dir,
)
from jujupy.version_client import ModelClient2_1
__metaclass__ = type
log = logging.getLogger("assess_storage")
DEFAULT_STORAGE_POOL_DETAILS = {}
AWS_DEFAULT_STORAGE_POOL_DETAILS = {
'ebs': {
'provider': 'ebs'},
'ebs-ssd': {
'attrs': {
'volume-type': 'ssd'},
'provider': 'ebs'},
'tmpfs': {
'provider': 'tmpfs'},
'loop': {
'provider': 'loop'},
'rootfs': {
'provider': 'rootfs'}
}
storage_pool_details = {
"loopy": {
"provider": "loop",
"attrs": {"size": "1G"}
},
"rooty": {
"provider": "rootfs",
"attrs": {"size": "1G"}
},
"tempy": {
"provider": "tmpfs",
"attrs": {"size": "1G"}
},
"ebsy": {
"provider": "ebs",
"attrs": {"size": "1G"}
},
}
storage_pool_1x = copy.deepcopy(storage_pool_details)
storage_pool_1x["ebs-ssd"] = {
"provider": "ebs",
"attrs": {"volume-type": "ssd"}
}
def make_expected_ls(client, storage_name, unit_name, kind='filesystem'):
"""Return the expected data from list-storage for filesystem or block."""
if kind == 'block':
location = ''
else:
location = '/srv/data'
data = {
"storage": {
storage_name: {
"kind": kind,
"attachments": {
"units": {
unit_name: {
"location": location,
"life": "alive"
}
}
},
"life": "alive"
}
}
}
# Remember that clients descend from the newest client. So 2.2 is not
# an instance of 2.1, but 1.25 is an instance.
if isinstance(client, ModelClient2_1):
# Juju 2.1- is missing the life field.
del data['storage'][storage_name]['life']
del data['storage'][storage_name]['attachments']['units'][
unit_name]['life']
return data
def make_expected_disk(client, disk_num, unit_name):
"""Return the expected data from list storage for disks."""
all_disk = {'storage': {}}
for num in range(1, disk_num + 1):
next_disk = make_expected_ls(
client, 'disks/{}'.format(num), unit_name, kind='block')
all_disk['storage'].update(next_disk['storage'])
return all_disk
def storage_list(client):
"""Return the storage list."""
list_storage = json.loads(client.list_storage())
for instance in list_storage["storage"].keys():
try:
list_storage["storage"][instance].pop("status")
list_storage["storage"][instance].pop("persistent")
attachments = list_storage["storage"][instance]["attachments"]
unit = attachments["units"].keys()[0]
attachments["units"][unit].pop("machine")
if instance.startswith("disks"):
attachments["units"][unit]["location"] = ""
except Exception:
pass
return list_storage
def storage_pool_list(client):
"""Return the list of storage pool."""
return json.loads(client.list_storage_pool())
def create_storage_charm(charm_dir, name, summary, storage):
"""Manually create a temporary charm to test with storage."""
storage_charm = Charm(name, summary, storage=storage, series=['trusty'])
charm_root = storage_charm.to_repo_dir(charm_dir)
return charm_root
def assess_create_pool(client):
"""Test creating storage pool."""
for name, pool in storage_pool_details.iteritems():
client.create_storage_pool(name, pool["provider"],
pool["attrs"]["size"])
def assess_add_storage(client, unit, storage_type, amount="1"):
"""Test adding storage instances to service.
Only type 'disk' is able to add instances.
"""
client.add_storage(unit, storage_type, amount)
def deploy_storage(client, charm, series, pool, amount="1G", charm_repo=None):
"""Test deploying charm with storage."""
if pool == "loop":
client.deploy(charm, series=series, repository=charm_repo,
storage="disks=" + pool + "," + amount)
elif pool is None:
client.deploy(charm, series=series, repository=charm_repo,
storage="data=" + amount)
else:
client.deploy(charm, series=series, repository=charm_repo,
storage="data=" + pool + "," + amount)
client.wait_for_started()
def assess_deploy_storage(client, charm_series,
charm_name, provider_type, pool=None):
"""Set up the test for deploying charm with storage."""
if provider_type == "block":
storage = {
"disks": {
"type": provider_type,
"multiple": {
"range": "0-10"
}
}
}
else:
storage = {
"data": {
"type": provider_type,
"location": "/srv/data"
}
}
with temp_dir() as charm_dir:
charm_root = create_storage_charm(charm_dir, charm_name,
'Test charm for storage', storage)
platform = 'ubuntu'
charm = local_charm_path(charm=charm_name, juju_ver=client.version,
series=charm_series,
repository=os.path.dirname(charm_root),
platform=platform)
deploy_storage(client, charm, charm_series, pool, "1G", charm_dir)
def assess_multiple_provider(client, charm_series, amount, charm_name,
provider_1, provider_2, pool_1, pool_2):
storage = {}
for provider in [provider_1, provider_2]:
if provider == "block":
storage.update({
"disks": {
"type": provider,
"multiple": {
"range": "0-10"
}
}
})
else:
storage.update({
"data": {
"type": provider,
"location": "/srv/data"
}
})
with temp_dir() as charm_dir:
charm_root = create_storage_charm(charm_dir, charm_name,
'Test charm for storage', storage)
platform = 'ubuntu'
charm = local_charm_path(charm=charm_name, juju_ver=client.version,
series=charm_series,
repository=os.path.dirname(charm_root),
platform=platform)
if pool_1 == "loop":
command = "disks=" + pool_1 + "," + amount
else:
command = "data=" + pool_1 + "," + amount
if pool_2 == "loop":
command = command + ",disks=" + pool_2
else:
command = command + ",data=" + pool_2
client.deploy(charm, series=charm_series, repository=charm_dir,
storage=command)
client.wait_for_started()
def assert_dict_is_subset(sub_dict, super_dict):
"""Assert that every item in the sub_dict is in the super_dict.
:raises JujuAssertionError: when sub_dict items are missing.
:return: True when when sub_dict is a subset of super_dict
"""
if not all(item in super_dict.items() for item in sub_dict.items()):
raise JujuAssertionError(
'Found: {} \nExpected: {}'.format(super_dict, sub_dict))
return True
def check_storage_list(client, expected):
storage_list_derived = storage_list(client)
assert_dict_is_subset(expected, storage_list_derived)
def assess_storage(client, charm_series):
"""Test the storage feature.
Each storage test is deployed as a charm. The application is removed
when the test succeeds. Logs will be retrieved from failing machines.
"""
log.info('Assessing create-pool')
assess_create_pool(client)
log.info('create-pool PASSED')
log.info('Assessing storage pool')
if client.is_juju1x():
expected_pool = storage_pool_1x
else:
if client.env.provider == 'ec2':
expected_pool = dict(AWS_DEFAULT_STORAGE_POOL_DETAILS)
else:
expected_pool = dict(DEFAULT_STORAGE_POOL_DETAILS)
expected_pool.update(storage_pool_details)
pool_list = storage_pool_list(client)
assert_dict_is_subset(expected_pool, pool_list)
log.info('Storage pool PASSED')
log.info('Assessing filesystem rootfs')
assess_deploy_storage(client, charm_series,
'dummy-storage-fs', 'filesystem', 'rootfs')
expected = make_expected_ls(client, 'data/0', 'dummy-storage-fs/0')
check_storage_list(client, expected)
log.info('Filesystem rootfs PASSED')
client.remove_service('dummy-storage-fs')
log.info('Assessing block loop disk 1')
assess_deploy_storage(client, charm_series,
'dummy-storage-lp', 'block', 'loop')
expected_block1 = make_expected_disk(client, 1, 'dummy-storage-lp/0')
check_storage_list(client, expected_block1)
log.info('Block loop disk 1 PASSED')
log.info('Assessing add storage block loop disk 2')
assess_add_storage(client, 'dummy-storage-lp/0', 'disks', "1")
expected_block2 = make_expected_disk(client, 2, 'dummy-storage-lp/0')
check_storage_list(client, expected_block2)
log.info('Block loop disk 2 PASSED')
client.remove_service('dummy-storage-lp')
log.info('Assessing filesystem tmpfs')
assess_deploy_storage(client, charm_series,
'dummy-storage-tp', 'filesystem', 'tmpfs')
expected = make_expected_ls(client, 'data/3', 'dummy-storage-tp/0')
check_storage_list(client, expected)
log.info('Filesystem tmpfs PASSED')
client.remove_service('dummy-storage-tp')
log.info('Assessing filesystem')
assess_deploy_storage(client, charm_series,
'dummy-storage-np', 'filesystem')
expected = make_expected_ls(client, 'data/4', 'dummy-storage-np/0')
check_storage_list(client, expected)
log.info('Filesystem tmpfs PASSED')
client.remove_service('dummy-storage-np')
log.info('Assessing multiple filesystem, block, rootfs, loop')
assess_multiple_provider(client, charm_series, "1G", 'dummy-storage-mp',
'filesystem', 'block', 'rootfs', 'loop')
expected = make_expected_ls(client, 'data/5', 'dummy-storage-mp/0')
check_storage_list(client, expected)
log.info('Multiple filesystem, block, rootfs, loop PASSED')
client.remove_service('dummy-storage-mp')
log.info('All storage tests PASSED')
def parse_args(argv):
"""Parse all arguments."""
parser = argparse.ArgumentParser(description="Test Storage Feature")
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_storage(bs_manager.client, bs_manager.series)
return 0
if __name__ == '__main__':
sys.exit(main())
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