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54 lines
1.8 KiB
54 lines
1.8 KiB
# Licensed to the Apache Software Foundation (ASF) under one or more |
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# contributor license agreements. See the NOTICE file distributed with |
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# this work for additional information regarding copyright ownership. |
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# The ASF licenses this file to You under the Apache License, Version 2.0 |
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# (the "License"); you may not use this file except in compliance with |
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# the License. You may obtain 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, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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import json |
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class TaskSpec(object): |
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""" |
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The base class for a task specification. |
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MAX_DURATION_MS The longest duration we should use for a task specification. |
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""" |
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MAX_DURATION_MS=10000000 |
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def __init__(self, start_ms, duration_ms): |
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""" |
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Create a new task specification. |
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:param start_ms: The target start time in milliseconds since the epoch. |
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:param duration_ms: The duration in milliseconds. |
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""" |
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self.message = { |
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'startMs': start_ms, |
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'durationMs': duration_ms |
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} |
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@staticmethod |
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def to_node_names(nodes): |
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""" |
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Convert an array of nodes or node names to an array of node names. |
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""" |
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node_names = [] |
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for obj in nodes: |
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if isinstance(obj, basestring): |
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node_names.append(obj) |
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else: |
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node_names.append(obj.name) |
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return node_names |
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def __str__(self): |
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return json.dumps(self.message)
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