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# Copyright 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.
class ClusterTask(object):
"""
Stores the different kind of tasks being performed by a cluster.
"""
_lookup = {}
def __init__(self, code, name, description):
self._code = int(code)
self._name = name
self._description = description
ClusterTask._lookup[self._code] = self
@property
def code(self):
return self._code
@property
def name(self):
return self._name
@property
def description(self):
return self._description
def __eq__(self, other):
if not isinstance(other, ClusterTask):
return False
return self._code == other._code
@classmethod
def from_code(cls, code):
if code not in cls._lookup:
return None
return cls._lookup[code]
def __str__(self):
return "(%d %s %s)" % (self._code, self._name,
self._description)
def __repr__(self):
return "ClusterTask.%s (%s)" % (self._name,
self._description)
class ClusterTasks(object):
NONE = ClusterTask(0x01, 'NONE', 'No tasks for the cluster.')
BUILDING_INITIAL = ClusterTask(
0x02, 'BUILDING', 'Building the initial cluster.')
DELETING = ClusterTask(0x03, 'DELETING', 'Deleting the cluster.')
ADDING_SHARD = ClusterTask(
0x04, 'ADDING_SHARD', 'Adding a shard to the cluster.')
GROWING_CLUSTER = ClusterTask(
0x05, 'GROWING_CLUSTER', 'Increasing the size of the cluster.')
SHRINKING_CLUSTER = ClusterTask(
0x06, 'SHRINKING_CLUSTER', 'Decreasing the size of the cluster.')
UPGRADING_CLUSTER = ClusterTask(
0x07, 'UPGRADING_CLUSTER', 'Upgrading the cluster to new version.')
RESTARTING_CLUSTER = ClusterTask(
0x08, 'RESTARTING_CLUSTER', 'Restarting the cluster.')
UPDATING_CLUSTER = ClusterTask(
0x09, 'UPDATING_CLUSTER', 'Updating cluster configuration.')
# Dissuade further additions at run-time.
ClusterTask.__init__ = None
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