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# Copyright (c) 2014 eBay Software Foundation
# All Rights Reserved.
#
# 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.
from troveclient import base
from troveclient import common
class Cluster(base.Resource):
"""A Cluster is an opaque cluster used to store Database clusters."""
def __repr__(self):
return "<Cluster: %s>" % self.name
def delete(self):
"""Delete the cluster."""
self.manager.delete(self)
def force_delete(self):
"""Force delete the cluster"""
self.manager.reset_status(self)
self.manager.delete(self)
class Clusters(base.ManagerWithFind):
"""Manage :class:`Cluster` resources."""
resource_class = Cluster
def create(self, name, datastore, datastore_version, instances=None,
locality=None):
"""Create (boot) a new cluster."""
body = {"cluster": {
"name": name
}}
datastore_obj = {
"type": datastore,
"version": datastore_version
}
body["cluster"]["datastore"] = datastore_obj
if instances:
body["cluster"]["instances"] = instances
if locality:
body["cluster"]["locality"] = locality
return self._create("/clusters", body, "cluster")
def list(self, limit=None, marker=None):
"""Get a list of all clusters.
:rtype: list of :class:`Cluster`.
"""
return self._paginated("/clusters", "clusters", limit, marker)
def get(self, cluster):
"""Get a specific cluster.
:rtype: :class:`Cluster`
"""
return self._get("/clusters/%s" % base.getid(cluster),
"cluster")
def delete(self, cluster):
"""Delete the specified cluster.
:param cluster: The cluster to delete
"""
url = "/clusters/%s" % base.getid(cluster)
resp, body = self.api.client.delete(url)
common.check_for_exceptions(resp, body, url)
def reset_status(self, cluster):
"""Reset the status of a cluster
:param cluster: The cluster to reset
"""
body = {'reset-status': {}}
self._action(cluster, body)
def _action(self, cluster, body):
"""Perform a cluster "action" -- grow/shrink/etc."""
url = "/clusters/%s" % base.getid(cluster)
resp, body = self.api.client.post(url, body=body)
common.check_for_exceptions(resp, body, url)
if body:
return self.resource_class(self, body['cluster'], loaded=True)
return body
def add_shard(self, cluster):
"""Adds a shard to the specified cluster.
:param cluster: The cluster to add a shard to
"""
url = "/clusters/%s" % base.getid(cluster)
body = {"add_shard": {}}
resp, body = self.api.client.post(url, body=body)
common.check_for_exceptions(resp, body, url)
if body:
return self.resource_class(self, body, loaded=True)
return body
def grow(self, cluster, instances=None):
"""Grow a cluster.
:param cluster: The cluster to grow
:param instances: List of instances to add
"""
body = {"grow": instances}
return self._action(cluster, body)
def shrink(self, cluster, instances=None):
"""Shrink a cluster.
:param cluster: The cluster to shrink
:param instances: List of instances to drop
"""
body = {"shrink": instances}
return self._action(cluster, body)
def upgrade(self, cluster, datastore_version):
"""Upgrades a cluster to a new datastore version.
:param cluster: The cluster to upgrade
:param datastore_version: Datastore version to which to upgrade
"""
body = {"upgrade": {'datastore_version': datastore_version}}
return self._action(cluster, body)
class ClusterStatus(object):
ACTIVE = "ACTIVE"
BUILD = "BUILD"
FAILED = "FAILED"
SHUTDOWN = "SHUTDOWN"
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