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/*
* Copyright 2015 Open Networking Laboratory
*
* 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 org.onosproject.net.intent.impl.phase;
import org.onosproject.net.intent.IntentData;
import org.onosproject.net.intent.impl.IntentProcessor;
import java.util.Optional;
import static com.google.common.base.Preconditions.checkNotNull;
import static org.onosproject.net.intent.impl.phase.IntentProcessPhase.transferErrorCount;
/**
* Represents a phase of requesting a withdraw of an intent.
*/
final class WithdrawRequest implements IntentProcessPhase {
private final IntentProcessor processor;
private final IntentData data;
private final Optional<IntentData> stored;
/**
* Creates a withdraw request phase.
*
* @param processor intent processor to be passed to intent process phases
* generated after this phase
* @param intentData intent data to be processed
* @param stored intent data stored in the store
*/
WithdrawRequest(IntentProcessor processor, IntentData intentData, Optional<IntentData> stored) {
this.processor = checkNotNull(processor);
this.data = checkNotNull(intentData);
this.stored = checkNotNull(stored);
}
@Override
public Optional<IntentProcessPhase> execute() {
//TODO perhaps we want to validate that the pending and current are the
// same version i.e. they are the same
// Note: this call is not just the symmetric version of submit
transferErrorCount(data, stored);
if (!stored.isPresent() || stored.get().installables().isEmpty()) {
switch (data.request()) {
case INSTALL_REQ:
return Optional.of(new Failed(data));
case WITHDRAW_REQ:
default: //TODO "default" case should not happen
return Optional.of(new Withdrawn(data));
}
}
data.setInstallables(stored.get().installables());
return Optional.of(new Withdrawing(processor, data));
}
}
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