55 lines
1.8 KiB
Python
55 lines
1.8 KiB
Python
# 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, str):
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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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