# Licensed to the Apache Software Foundation (ASF) under one or more # contributor license agreements. See the NOTICE file distributed with # this work for additional information regarding copyright ownership. # The ASF licenses this file to You 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. import json class TaskSpec(object): """ The base class for a task specification. MAX_DURATION_MS The longest duration we should use for a task specification. """ MAX_DURATION_MS=10000000 def __init__(self, start_ms, duration_ms): """ Create a new task specification. :param start_ms: The target start time in milliseconds since the epoch. :param duration_ms: The duration in milliseconds. """ self.message = { 'startMs': start_ms, 'durationMs': duration_ms } @staticmethod def to_node_names(nodes): """ Convert an array of nodes or node names to an array of node names. """ node_names = [] for obj in nodes: if isinstance(obj, str): node_names.append(obj) else: node_names.append(obj.name) return node_names def __str__(self): return json.dumps(self.message)