def setUp(self):
yield super(MachineAgentTest, self).setUp()
self.output = self.capture_logging("juju.agents.machine",
level=logging.DEBUG)
config = self.get_test_environment_config()
environment = config.get_default()
# Store the environment to zookeeper
environment_state_manager = EnvironmentStateManager(self.client)
yield environment_state_manager.set_config_state(config, "myfirstenv")
# Load the environment with the charm state and charm binary
self.provider = environment.get_machine_provider()
self.storage = self.provider.get_file_storage()
self.charm = CharmDirectory(self.sample_dir1)
self.publisher = CharmPublisher(self.client, self.storage)
yield self.publisher.add_charm(local_charm_id(self.charm), self.charm)
charm_states = yield self.publisher.publish()
self.charm_state = charm_states[0]
# Create a service from the charm from which we can create units for
# the machine.
self.service_state_manager = ServiceStateManager(self.client)
self.service = yield self.service_state_manager.add_service_state(
"fatality-blog", self.charm_state)
def test_add_charm_with_concurrent(self):
"""
Publishing a charm, that has become published concurrent, after the
add_charm, works fine. it will write to storage regardless. The use
of a sha256 as part of the storage key is utilized to help ensure
uniqueness of bits. The sha256 is also stored with the charm state.
This relation betewen the charm state and the binary bits, helps
guarantee the property that any published charm in zookeeper will use
the binary bits that it was published with.
"""
yield self.publisher.add_charm(self.charm_id, self.charm)
concurrent_publisher = CharmPublisher(self.client, self.storage)
charm = CharmDirectory(self.sample_dir1)
yield concurrent_publisher.add_charm(self.charm_id, charm)
yield self.publisher.publish()
# modify the charm to create a conflict scenario
self.makeFile("zebra", path=os.path.join(self.sample_dir1, "junk.txt"))
# assert the charm now has a different sha post modification
modified_charm_sha = charm.get_sha256()
self.assertNotEqual(modified_charm_sha, self.charm.get_sha256())
# verify publishing raises a stateerror
def verify_failure(result):
if not isinstance(result, Failure):
self.fail("Should have raised state error")
result.trap(StateChanged)
return True
yield concurrent_publisher.publish().addBoth(verify_failure)
# verify the zk state
charm_nodes = yield self.client.get_children("/charms")
self.assertEqual(charm_nodes, [self.charm_key])
content, stat = yield self.client.get("/charms/%s" % charm_nodes[0])
# assert the checksum matches the initially published checksum
self.assertEqual(yaml.load(content)["sha256"], self.charm.get_sha256())
store_path = os.path.join(self.storage_dir, self.charm_storage_key)
self.assertTrue(os.path.exists(store_path))
# and the binary bits where stored
modified_charm_storage_key = under.quote(
"%s:%s" % (self.charm_id, modified_charm_sha))
modified_store_path = os.path.join(self.storage_dir,
modified_charm_storage_key)
self.assertTrue(os.path.exists(modified_store_path))
def setUp(self):
super(CharmPublisherTest, self).setUp()
zookeeper.set_debug_level(0)
self.charm = CharmDirectory(self.sample_dir1)
self.charm_id = local_charm_id(self.charm)
self.charm_key = under.quote(self.charm_id)
# provider storage key
self.charm_storage_key = under.quote(
"%s:%s" % (self.charm_id, self.charm.get_sha256()))
self.client = ZookeeperClient(get_test_zookeeper_address())
self.storage_dir = self.makeDir()
self.storage = FileStorage(self.storage_dir)
self.publisher = CharmPublisher(self.client, self.storage)
yield self.client.connect()
yield self.client.create("/charms")
def test_add_charm_already_known(self):
"""Adding an existing charm, is an effective noop, as its not added
to the internal publisher queue.
"""
# Do an initial publishing of the charm
scheduled = yield self.publisher.add_charm(self.charm_id, self.charm)
self.assertTrue(scheduled)
result = yield self.publisher.publish()
self.assertEqual(result[0].name, self.charm.metadata.name)
publisher = CharmPublisher(self.client, self.storage)
scheduled = yield publisher.add_charm(self.charm_id, self.charm)
self.assertFalse(scheduled)
scheduled = yield publisher.add_charm(self.charm_id, self.charm)
self.assertFalse(scheduled)
result = yield publisher.publish()
self.assertEqual(result[0].name, self.charm.metadata.name)
self.assertEqual(result[1].name, self.charm.metadata.name)
def upgrade_charm(
config, environment, verbose, log, repository_path, service_name, dry_run):
"""Upgrades a service's charm.
First determines if an upgrade is available, then updates the
service charm reference, and marks the units as needing upgrades.
"""
provider = environment.get_machine_provider()
client = yield provider.connect()
service_manager = ServiceStateManager(client)
service_state = yield service_manager.get_service_state(service_name)
old_charm_id = yield service_state.get_charm_id()
old_charm_url = CharmURL.parse(old_charm_id)
old_charm_url.assert_revision()
repo, charm_url = resolve(
str(old_charm_url.with_revision(None)),
repository_path,
environment.default_series)
new_charm_url = charm_url.with_revision(
(yield repo.latest(charm_url)))
if charm_url.collection.schema == "local":
if old_charm_url.revision >= new_charm_url.revision:
new_revision = old_charm_url.revision + 1
charm = yield repo.find(new_charm_url)
if isinstance(charm, CharmDirectory):
if dry_run:
log.info("%s would be set to revision %s",
charm.path, new_revision)
else:
log.info("Setting %s to revision %s",
charm.path, new_revision)
charm.set_revision(new_revision)
new_charm_url.revision = new_revision
new_charm_id = str(new_charm_url)
# Verify its newer than what's deployed
if not new_charm_url.revision > old_charm_url.revision:
if dry_run:
log.info("Service already running latest charm %r", old_charm_id)
else:
raise NewerCharmNotFound(old_charm_id)
elif dry_run:
log.info("Service would be upgraded from charm %r to %r",
old_charm_id, new_charm_id)
# On dry run, stop before modifying state.
if not dry_run:
# Publish the new charm
storage = provider.get_file_storage()
publisher = CharmPublisher(client, storage)
charm = yield repo.find(new_charm_url)
yield publisher.add_charm(new_charm_id, charm)
result = yield publisher.publish()
charm_state = result[0]
# Update the service charm reference
yield service_state.set_charm_id(charm_state.id)
# Mark the units for upgrades
units = yield service_state.get_all_unit_states()
for unit in units:
running, state = yield is_unit_running(client, unit)
if not running:
log.info(
"Unit %r is not in a running state (state: %r), won't upgrade",
unit.unit_name, state or "uninitialized")
continue
if not dry_run:
yield unit.set_upgrade_flag()
def publish_charm(self, charm_path=sample_directory):
charm = get_charm_from_path(charm_path)
publisher = CharmPublisher(self.client, self.storage)
yield publisher.add_charm(local_charm_id(charm), charm)
charm_states = yield publisher.publish()
returnValue((charm, charm_states[0]))
