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# Copyright 2015 Canonical Ltd. This software is licensed under the
# GNU Affero General Public License version 3 (see the file LICENSE).
"""Tests for bcache API."""
__all__ = []
import http.client
from uuid import uuid4
from django.core.urlresolvers import reverse
from maasserver.enum import (
CACHE_MODE_TYPE,
FILESYSTEM_GROUP_TYPE,
FILESYSTEM_TYPE,
NODE_STATUS,
)
from maasserver.testing.api import APITestCase
from maasserver.testing.factory import factory
from maasserver.testing.orm import reload_object
from maasserver.utils.converters import (
human_readable_bytes,
json_load_bytes,
)
from testtools.matchers import (
ContainsDict,
Equals,
)
def get_bcache_devices_uri(node):
"""Return a Node's bcache devices URI on the API."""
return reverse(
'bcache_devices_handler', args=[node.system_id])
def get_bcache_device_uri(bcache, node=None):
"""Return a bcache device URI on the API."""
if node is None:
node = bcache.get_node()
return reverse(
'bcache_device_handler', args=[node.system_id, bcache.id])
class TestBcacheDevicesAPI(APITestCase):
def test_handler_path(self):
node = factory.make_Node()
self.assertEqual(
'/api/1.0/nodes/%s/bcaches/' % (node.system_id),
get_bcache_devices_uri(node))
def test_read(self):
node = factory.make_Node()
bcaches = [
factory.make_FilesystemGroup(
node=node, group_type=FILESYSTEM_GROUP_TYPE.BCACHE)
for _ in range(3)
]
# Not bcache. Should not be in the output.
for _ in range(3):
factory.make_FilesystemGroup(
node=node, group_type=factory.pick_enum(
FILESYSTEM_GROUP_TYPE,
but_not=FILESYSTEM_GROUP_TYPE.BCACHE))
uri = get_bcache_devices_uri(node)
response = self.client.get(uri)
self.assertEqual(
http.client.OK, response.status_code, response.content)
expected_ids = [
bcache.id
for bcache in bcaches
]
result_ids = [
bcache["id"]
for bcache in json_load_bytes(response.content)
]
self.assertItemsEqual(expected_ids, result_ids)
def test_create_403_if_not_admin(self):
node = factory.make_Node(status=NODE_STATUS.READY)
backing_size = 10 * 1000 ** 4
cache_set = factory.make_CacheSet(node=node)
backing_device = factory.make_PhysicalBlockDevice(
node=node, size=backing_size)
uuid = str(uuid4())
uri = get_bcache_devices_uri(node)
response = self.client.post(uri, {
'name': 'bcache0',
'uuid': uuid,
'cache_mode': CACHE_MODE_TYPE.WRITEBACK,
'cache_set': cache_set.id,
'backing_device': backing_device.id,
})
self.assertEqual(
http.client.FORBIDDEN, response.status_code, response.content)
def test_create_409_if_not_ready(self):
self.become_admin()
node = factory.make_Node(status=NODE_STATUS.ALLOCATED)
backing_size = 10 * 1000 ** 4
cache_set = factory.make_CacheSet(node=node)
backing_device = factory.make_PhysicalBlockDevice(
node=node, size=backing_size)
uuid = str(uuid4())
uri = get_bcache_devices_uri(node)
response = self.client.post(uri, {
'name': 'bcache0',
'uuid': uuid,
'cache_mode': CACHE_MODE_TYPE.WRITEBACK,
'cache_set': cache_set.id,
'backing_device': backing_device.id,
})
self.assertEqual(
http.client.CONFLICT, response.status_code, response.content)
def test_create(self):
"""Tests Bcache device creation."""
self.become_admin()
node = factory.make_Node(status=NODE_STATUS.READY)
backing_size = 10 * 1000 ** 4
cache_set = factory.make_CacheSet(node=node)
backing_device = factory.make_PhysicalBlockDevice(
node=node, size=backing_size)
uuid = str(uuid4())
uri = get_bcache_devices_uri(node)
response = self.client.post(uri, {
'name': 'bcache0',
'uuid': uuid,
'cache_mode': CACHE_MODE_TYPE.WRITEBACK,
'cache_set': cache_set.id,
'backing_device': backing_device.id,
})
self.assertEqual(
http.client.OK, response.status_code, response.content)
parsed_device = json_load_bytes(response.content)
self.assertEqual(backing_size, parsed_device['virtual_device']['size'])
self.assertItemsEqual('bcache0', parsed_device['name'])
self.assertItemsEqual(uuid, parsed_device['uuid'])
def test_create_with_missing_cache_set_fails(self):
"""Tests Bcache device creation without a cache set."""
self.become_admin()
node = factory.make_Node(status=NODE_STATUS.READY)
backing_size = 10 * 1000 ** 4
backing_device = factory.make_PhysicalBlockDevice(
node=node, size=backing_size)
uuid = str(uuid4())
uri = get_bcache_devices_uri(node)
response = self.client.post(uri, {
'name': 'bcache0',
'uuid': uuid,
'cache_mode': CACHE_MODE_TYPE.WRITEBACK,
'backing_device': backing_device.id,
})
self.assertEqual(
http.client.BAD_REQUEST, response.status_code, response.content)
parsed_content = json_load_bytes(response.content)
self.assertIn(
'Bcache requires a cache_set.',
parsed_content['__all__'])
self.assertIsNone(backing_device.get_effective_filesystem())
def test_create_with_missing_backing_fails(self):
"""Tests Bcache device creation without a backing device."""
self.become_admin()
node = factory.make_Node(status=NODE_STATUS.READY)
cache_set = factory.make_CacheSet(node=node)
uuid = str(uuid4())
uri = get_bcache_devices_uri(node)
response = self.client.post(uri, {
'name': 'bcache0',
'uuid': uuid,
'cache_mode': CACHE_MODE_TYPE.WRITEBACK,
'cache_set': cache_set.id,
})
self.assertEqual(
http.client.BAD_REQUEST, response.status_code, response.content)
parsed_content = json_load_bytes(response.content)
self.assertIn(
'Either backing_device or backing_partition must be specified.',
parsed_content['__all__'])
class TestBcacheDeviceAPI(APITestCase):
def test_handler_path(self):
node = factory.make_Node()
bcache = factory.make_FilesystemGroup(
node=node, group_type=FILESYSTEM_GROUP_TYPE.BCACHE)
self.assertEqual(
'/api/1.0/nodes/%s/bcache/%s/' % (
node.system_id, bcache.id),
get_bcache_device_uri(bcache, node=node))
def test_read(self):
node = factory.make_Node()
cache_set = factory.make_CacheSet(node=node)
backing_block_device = factory.make_PhysicalBlockDevice(node=node)
backing_filesystem = factory.make_Filesystem(
fstype=FILESYSTEM_TYPE.BCACHE_BACKING,
block_device=backing_block_device)
bcache = factory.make_FilesystemGroup(
group_type=FILESYSTEM_GROUP_TYPE.BCACHE, cache_set=cache_set,
filesystems=[backing_filesystem])
uri = get_bcache_device_uri(bcache)
response = self.client.get(uri)
self.assertEqual(
http.client.OK, response.status_code, response.content)
parsed_bcache = json_load_bytes(response.content)
self.assertThat(parsed_bcache, ContainsDict({
"id": Equals(bcache.id),
"uuid": Equals(bcache.uuid),
"name": Equals(bcache.name),
"size": Equals(bcache.get_size()),
"human_size": Equals(
human_readable_bytes(bcache.get_size())),
"resource_uri": Equals(get_bcache_device_uri(bcache)),
"virtual_device": ContainsDict({
"id": Equals(bcache.virtual_device.id),
}),
"cache_set": ContainsDict({
"id": Equals(cache_set.id),
"name": Equals(cache_set.name),
}),
"backing_device": ContainsDict({
"id": Equals(backing_block_device.id),
}),
}))
def test_read_404_when_not_bcache(self):
not_bcache = factory.make_FilesystemGroup(
group_type=factory.pick_enum(
FILESYSTEM_GROUP_TYPE, but_not=FILESYSTEM_GROUP_TYPE.BCACHE))
uri = get_bcache_device_uri(not_bcache)
response = self.client.get(uri)
self.assertEqual(
http.client.NOT_FOUND, response.status_code, response.content)
def test_delete_deletes_bcache(self):
self.become_admin()
node = factory.make_Node(status=NODE_STATUS.READY)
bcache = factory.make_FilesystemGroup(
node=node, group_type=FILESYSTEM_GROUP_TYPE.BCACHE)
uri = get_bcache_device_uri(bcache)
response = self.client.delete(uri)
self.assertEqual(
http.client.NO_CONTENT, response.status_code, response.content)
self.assertIsNone(reload_object(bcache))
def test_delete_403_when_not_admin(self):
node = factory.make_Node(status=NODE_STATUS.READY)
bcache = factory.make_FilesystemGroup(
group_type=FILESYSTEM_GROUP_TYPE.BCACHE, node=node)
uri = get_bcache_device_uri(bcache)
response = self.client.delete(uri)
self.assertEqual(
http.client.FORBIDDEN, response.status_code, response.content)
def test_delete_404_when_not_bcache(self):
self.become_admin()
node = factory.make_Node(status=NODE_STATUS.READY)
not_bcache = factory.make_FilesystemGroup(
node=node, group_type=factory.pick_enum(
FILESYSTEM_GROUP_TYPE, but_not=FILESYSTEM_GROUP_TYPE.BCACHE))
uri = get_bcache_device_uri(not_bcache)
response = self.client.delete(uri)
self.assertEqual(
http.client.NOT_FOUND, response.status_code, response.content)
def test_delete_409_when_not_ready(self):
self.become_admin()
node = factory.make_Node(status=NODE_STATUS.ALLOCATED)
bcache = factory.make_FilesystemGroup(
group_type=FILESYSTEM_GROUP_TYPE.BCACHE, node=node)
uri = get_bcache_device_uri(bcache)
response = self.client.delete(uri)
self.assertEqual(
http.client.CONFLICT, response.status_code, response.content)
def test_update_bcache(self):
"""Tests update bcache method by changing the name, UUID and cache
mode of a bcache."""
self.become_admin()
node = factory.make_Node(status=NODE_STATUS.READY)
bcache = factory.make_FilesystemGroup(
node=node, group_type=FILESYSTEM_GROUP_TYPE.BCACHE,
cache_mode=CACHE_MODE_TYPE.WRITEBACK)
uri = get_bcache_device_uri(bcache)
uuid = str(uuid4())
filesystem_ids = [fs.id for fs in bcache.filesystems.all()]
response = self.client.put(uri, {
'name': 'new_name',
'uuid': uuid,
'cache_mode': CACHE_MODE_TYPE.WRITEAROUND,
})
self.assertEqual(
http.client.OK, response.status_code, response.content)
parsed_device = json_load_bytes(response.content)
self.assertEqual('new_name', parsed_device['name'])
self.assertEqual(uuid, parsed_device['uuid'])
self.assertEqual(
CACHE_MODE_TYPE.WRITEAROUND, parsed_device['cache_mode'])
# Ensure the filesystems were not changed.
self.assertListEqual(
filesystem_ids, [fs.id for fs in bcache.filesystems.all()])
def test_change_bcache_backing(self):
"""Tests update bcache method by changing backing device to different
block device."""
self.become_admin()
node = factory.make_Node(status=NODE_STATUS.READY)
bcache = factory.make_FilesystemGroup(
node=node, group_type=FILESYSTEM_GROUP_TYPE.BCACHE,
cache_mode=CACHE_MODE_TYPE.WRITEBACK)
uri = get_bcache_device_uri(bcache)
new_backing = factory.make_PhysicalBlockDevice(node=node)
response = self.client.put(uri, {
'backing_device': new_backing.id
})
self.assertEqual(
http.client.OK, response.status_code, response.content)
parsed_device = json_load_bytes(response.content)
self.assertEqual(new_backing.id, parsed_device['backing_device']['id'])
self.assertEqual('physical', parsed_device['backing_device']['type'])
def test_change_storages_to_partitions_bcache(self):
"""Tests update bcache method by changing backing device to a
partition."""
self.become_admin()
node = factory.make_Node(status=NODE_STATUS.READY)
bcache = factory.make_FilesystemGroup(
node=node, group_type=FILESYSTEM_GROUP_TYPE.BCACHE,
cache_mode=CACHE_MODE_TYPE.WRITEBACK)
uri = get_bcache_device_uri(bcache)
new_backing = factory.make_PartitionTable(
block_device=factory.make_PhysicalBlockDevice(
node=node)).add_partition()
response = self.client.put(uri, {
'backing_partition': new_backing.id
})
self.assertEqual(
http.client.OK, response.status_code, response.content)
parsed_device = json_load_bytes(response.content)
self.assertEqual(new_backing.id, parsed_device['backing_device']['id'])
self.assertEqual('partition', parsed_device['backing_device']['type'])
def test_invalid_change_fails(self):
"""Tests changing the backing of a bcache device to None fails."""
self.become_admin()
node = factory.make_Node(status=NODE_STATUS.READY)
bcache = factory.make_FilesystemGroup(
node=node, group_type=FILESYSTEM_GROUP_TYPE.BCACHE,
cache_mode=CACHE_MODE_TYPE.WRITEBACK)
uri = get_bcache_device_uri(bcache)
new_backing = factory.make_PhysicalBlockDevice() # On other node.
response = self.client.put(uri, {
'backing_device': new_backing.id,
})
self.assertEqual(
http.client.BAD_REQUEST, response.status_code, response.content)
parsed_content = json_load_bytes(response.content)
self.assertIn(
'Select a valid choice.',
parsed_content['backing_device'][0])
def test_update_403_if_not_admin(self):
node = factory.make_Node(status=NODE_STATUS.READY)
bcache = factory.make_FilesystemGroup(
node=node, group_type=FILESYSTEM_GROUP_TYPE.BCACHE,
cache_mode=CACHE_MODE_TYPE.WRITEBACK)
uri = get_bcache_device_uri(bcache)
uuid = str(uuid4())
response = self.client.put(uri, {
'name': 'new_name',
'uuid': uuid,
'cache_mode': CACHE_MODE_TYPE.WRITEAROUND,
})
self.assertEqual(
http.client.FORBIDDEN, response.status_code, response.content)
def test_update_409_if_not_ready(self):
self.become_admin()
node = factory.make_Node(status=NODE_STATUS.ALLOCATED)
bcache = factory.make_FilesystemGroup(
node=node, group_type=FILESYSTEM_GROUP_TYPE.BCACHE,
cache_mode=CACHE_MODE_TYPE.WRITEBACK)
uri = get_bcache_device_uri(bcache)
uuid = str(uuid4())
response = self.client.put(uri, {
'name': 'new_name',
'uuid': uuid,
'cache_mode': CACHE_MODE_TYPE.WRITEAROUND,
})
self.assertEqual(
http.client.CONFLICT, response.status_code, response.content)
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