| /* |
| * Copyright 2015-present 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.map(IntentData::installables).orElse(null)); |
| return Optional.of(new Installing(processor, new IntentData(data, compiled), stored)); |
| } catch (IntentException e) { |
| log.debug("Unable to compile intent {} due to: {}", data.intent(), e); |
| if (stored.filter(x -> !x.installables().isEmpty()).isPresent()) { |
| // removing orphaned flows and deallocating resources |
| return Optional.of(new Withdrawing(processor, new IntentData(data, stored.get().installables()))); |
| } else { |
| return Optional.of(new Failed(data)); |
| } |
| } |
| } |
| } |