76 lines
2.3 KiB
Python
76 lines
2.3 KiB
Python
# Copyright 2014 eBay Software Foundation
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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class ClusterTask(object):
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"""
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Stores the different kind of tasks being performed by a cluster.
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"""
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_lookup = {}
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def __init__(self, code, name, description):
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self._code = int(code)
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self._name = name
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self._description = description
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ClusterTask._lookup[self._code] = self
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@property
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def code(self):
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return self._code
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@property
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def name(self):
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return self._name
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@property
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def description(self):
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return self._description
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def __eq__(self, other):
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if not isinstance(other, ClusterTask):
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return False
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return self._code == other._code
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@classmethod
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def from_code(cls, code):
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if code not in cls._lookup:
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return None
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return cls._lookup[code]
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def __str__(self):
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return "(%d %s %s)" % (self._code, self._name,
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self._description)
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def __repr__(self):
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return "ClusterTask.%s (%s)" % (self._name,
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self._description)
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class ClusterTasks(object):
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NONE = ClusterTask(0x01, 'NONE', 'No tasks for the cluster.')
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BUILDING_INITIAL = ClusterTask(
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0x02, 'BUILDING', 'Building the initial cluster.')
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DELETING = ClusterTask(0x03, 'DELETING', 'Deleting the cluster.')
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ADDING_SHARD = ClusterTask(
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0x04, 'ADDING_SHARD', 'Adding a shard to the cluster.')
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GROWING_CLUSTER = ClusterTask(
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0x05, 'GROWING_CLUSTER', 'Increasing the size of the cluster.')
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SHRINKING_CLUSTER = ClusterTask(
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0x06, 'SHRINKING_CLUSTER', 'Decreasing the size of the cluster.')
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# Dissuade further additions at run-time.
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ClusterTask.__init__ = None
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