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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.IntentState;
import org.slf4j.Logger;
import java.util.Optional;
import static com.google.common.base.Preconditions.checkNotNull;
import static org.slf4j.LoggerFactory.getLogger;
/**
* Represents a phase of requesting a purge of an intent.
* <p>
* Note: The purge will only succeed if the intent is FAILED or WITHDRAWN.
* </p>
*/
final class PurgeRequest extends FinalIntentProcessPhase {
private static final Logger log = getLogger(PurgeRequest.class);
private final IntentData data;
private final Optional<IntentData> stored;
PurgeRequest(IntentData intentData, Optional<IntentData> stored) {
this.data = checkNotNull(intentData);
this.stored = checkNotNull(stored);
}
private boolean shouldAcceptPurge() {
if (!stored.isPresent()) {
log.info("Purge for intent {}, but intent is not present",
data.key());
return true;
}
IntentData storedData = stored.get();
if (storedData.state() == IntentState.WITHDRAWN
|| storedData.state() == IntentState.FAILED) {
return true;
}
log.info("Purge for intent {} is rejected because intent state is {}",
data.key(), storedData.state());
return false;
}
@Override
public IntentData data() {
if (shouldAcceptPurge()) {
return data;
} else {
return stored.get();
}
}
}
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