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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.Intent;
import org.onosproject.net.intent.IntentData;
import org.onosproject.net.intent.IntentException;
import org.onosproject.net.intent.impl.IntentProcessor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.List;
import java.util.Optional;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* Represents a phase where an intent is being compiled or recompiled.
*/
class Compiling implements IntentProcessPhase {
private static final Logger log = LoggerFactory.getLogger(Compiling.class);
private final IntentProcessor processor;
private final IntentData data;
private final Optional<IntentData> stored;
/**
* Creates a intent recompiling phase.
*
* @param processor intent processor that does work for recompiling
* @param data intent data containing an intent to be recompiled
* @param stored intent data stored in the store
*/
Compiling(IntentProcessor processor, IntentData data, Optional<IntentData> stored) {
this.processor = checkNotNull(processor);
this.data = checkNotNull(data);
this.stored = checkNotNull(stored);
}
@Override
public Optional<IntentProcessPhase> execute() {
try {
List<Intent> compiled = processor.compile(data.intent(),
//TODO consider passing an optional here in the future
stored.isPresent() ? stored.get().installables() : null);
data.setInstallables(compiled);
return Optional.of(new Installing(processor, data, stored));
} catch (IntentException e) {
log.debug("Unable to compile intent {} due to: {}", data.intent(), e);
if (stored.isPresent() && !stored.get().installables().isEmpty()) {
// removing orphaned flows and deallocating resources
data.setInstallables(stored.get().installables());
return Optional.of(new Withdrawing(processor, data));
} else {
return Optional.of(new Failed(data));
}
}
}
}
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