/*
* Copyright 2015 Collective, Inc.
*
* 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.
*/
package com.collective.celos.trigger;
import com.collective.celos.ScheduledTime;
import com.collective.celos.SlotID;
import com.collective.celos.SlotState;
import com.collective.celos.database.StateDatabaseConnection;
import com.collective.celos.WorkflowID;
/**
* Trigger that checks another workflow's slot (at the same scheduled time) for success.
*/
public class SuccessTrigger extends Trigger {
private WorkflowID triggerWorkflowID;
public SuccessTrigger(String workflowName) throws Exception {
this.triggerWorkflowID = new WorkflowID(workflowName);
}
@Override
public TriggerStatus getTriggerStatus(StateDatabaseConnection connection, ScheduledTime now, ScheduledTime scheduledTime) throws Exception {
SlotID slotId = new SlotID(triggerWorkflowID, scheduledTime);
final SlotState slotState = connection.getSlotState(slotId);
boolean ready = slotState != null && SlotState.Status.SUCCESS == slotState.getStatus();
return makeTriggerStatus(ready, humanReadableDescription(ready, slotId));
}
private String humanReadableDescription(boolean ready, SlotID slotId) {
if (ready) {
return "Workflow slot " + slotId.toString() + " is ready";
} else {
return "Workflow slot " + slotId.toString() + " is not ready";
}
}
public WorkflowID getTriggerWorkflowId() {
return triggerWorkflowID;
}
}