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/*-
* ============LICENSE_START=======================================================
* VID
* ================================================================================
* Copyright (C) 2017 - 2019 AT&T Intellectual Property. 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.
* ============LICENSE_END=========================================================
*/
package org.onap.vid.job;
import org.onap.vid.job.impl.JobSharedData;
import java.util.Map;
/**
* A callable instance, with serializable characteristics.
* Represents a step in a chain of steps, which eventualy
* resides into a packing Job.
*/
public interface JobCommand {
/**
* Initialize the command state
* @param sharedData shared data cross all job commands
* @param commandData An input to be set into the command. Each implementation may expect different keys in the map.
* @return Returns itself
*/
default JobCommand init(JobSharedData sharedData, Map<String, Object> commandData) {
return this;
}
/**
* @return Returns the inner state of the command. This state, once passed into init(), should
* bring the command back to it's state.
*/
Map<String, Object> getData();
/**
* Execute the command represented by this instance. Assumes the instance is already init().
* @return A NextCommand containing the next command in chain of commands, or null if chain
* should be terminated. Might return itself (packed in a NextCommand).
*/
NextCommand call();
default JobType getType() {
return JobType.jobTypeOf(this.getClass());
}
}
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