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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.provider.nil;
import com.google.common.collect.Sets;
import org.jboss.netty.util.HashedWheelTimer;
import org.jboss.netty.util.Timeout;
import org.jboss.netty.util.TimerTask;
import org.onlab.util.Timer;
import org.onosproject.core.ApplicationId;
import org.onosproject.net.DeviceId;
import org.onosproject.net.flow.CompletedBatchOperation;
import org.onosproject.net.flow.DefaultFlowEntry;
import org.onosproject.net.flow.FlowEntry;
import org.onosproject.net.flow.FlowRule;
import org.onosproject.net.flow.FlowRuleBatchEntry;
import org.onosproject.net.flow.FlowRuleBatchOperation;
import org.onosproject.net.flow.FlowRuleProvider;
import org.onosproject.net.flow.FlowRuleProviderService;
import org.slf4j.Logger;
import java.util.Collections;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.TimeUnit;
import static org.slf4j.LoggerFactory.getLogger;
/**
* Null provider to accept any flow and report them.
*/
class NullFlowRuleProvider extends NullProviders.AbstractNullProvider
implements FlowRuleProvider {
private final Logger log = getLogger(getClass());
private ConcurrentMap<DeviceId, Set<FlowEntry>> flowTable = new ConcurrentHashMap<>();
private FlowRuleProviderService providerService;
private HashedWheelTimer timer = Timer.getTimer();
private Timeout timeout;
/**
* Starts the flow rule provider simulation.
*
* @param providerService flow rule provider service
*/
void start(FlowRuleProviderService providerService) {
this.providerService = providerService;
timeout = timer.newTimeout(new StatisticTask(), 5, TimeUnit.SECONDS);
}
/**
* Stops the flow rule provider simulation.
*/
void stop() {
timeout.cancel();
}
@Override
public void applyFlowRule(FlowRule... flowRules) {
// FIXME: invoke executeBatch
}
@Override
public void removeFlowRule(FlowRule... flowRules) {
// FIXME: invoke executeBatch
}
@Override
public void removeRulesById(ApplicationId id, FlowRule... flowRules) {
throw new UnsupportedOperationException("Cannot remove by appId from null provider");
}
@Override
public void executeBatch(FlowRuleBatchOperation batch) {
// TODO: consider checking mastership
Set<FlowEntry> entries =
flowTable.getOrDefault(batch.deviceId(),
Sets.newConcurrentHashSet());
for (FlowRuleBatchEntry fbe : batch.getOperations()) {
switch (fbe.operator()) {
case ADD:
entries.add(new DefaultFlowEntry(fbe.target()));
break;
case REMOVE:
entries.remove(new DefaultFlowEntry(fbe.target()));
break;
case MODIFY:
FlowEntry entry = new DefaultFlowEntry(fbe.target());
entries.remove(entry);
entries.add(entry);
break;
default:
log.error("Unknown flow operation: {}", fbe);
}
}
flowTable.put(batch.deviceId(), entries);
CompletedBatchOperation op =
new CompletedBatchOperation(true, Collections.emptySet(),
batch.deviceId());
providerService.batchOperationCompleted(batch.id(), op);
}
// Periodically reports flow rule statistics.
private class StatisticTask implements TimerTask {
@Override
public void run(Timeout to) throws Exception {
for (DeviceId devId : flowTable.keySet()) {
Set<FlowEntry> entries =
flowTable.getOrDefault(devId, Collections.emptySet());
providerService.pushFlowMetrics(devId, entries);
}
timeout = timer.newTimeout(to.getTask(), 5, TimeUnit.SECONDS);
}
}
}
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