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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.driver.pipeline;
import org.onlab.osgi.ServiceDirectory;
import org.onosproject.net.DeviceId;
import org.onosproject.net.behaviour.Pipeliner;
import org.onosproject.net.behaviour.PipelinerContext;
import org.onosproject.net.driver.AbstractHandlerBehaviour;
import org.onosproject.net.flow.DefaultFlowRule;
import org.onosproject.net.flow.DefaultTrafficTreatment;
import org.onosproject.net.flow.FlowRule;
import org.onosproject.net.flow.FlowRuleOperations;
import org.onosproject.net.flow.FlowRuleOperationsContext;
import org.onosproject.net.flow.FlowRuleService;
import org.onosproject.net.flow.TrafficSelector;
import org.onosproject.net.flow.TrafficTreatment;
import org.onosproject.net.flow.instructions.Instructions;
import org.onosproject.net.flowobjective.FilteringObjective;
import org.onosproject.net.flowobjective.ForwardingObjective;
import org.onosproject.net.flowobjective.NextObjective;
import org.onosproject.net.flowobjective.ObjectiveError;
import org.slf4j.Logger;
import static org.slf4j.LoggerFactory.getLogger;
/**
* Simple single table pipeline abstraction.
*/
public class DefaultSingleTablePipeline extends AbstractHandlerBehaviour implements Pipeliner {
private final Logger log = getLogger(getClass());
private ServiceDirectory serviceDirectory;
private FlowRuleService flowRuleService;
private DeviceId deviceId;
@Override
public void init(DeviceId deviceId, PipelinerContext context) {
this.serviceDirectory = context.directory();
this.deviceId = deviceId;
flowRuleService = serviceDirectory.get(FlowRuleService.class);
}
@Override
public void filter(FilteringObjective filter) {}
@Override
public void forward(ForwardingObjective fwd) {
FlowRuleOperations.Builder flowBuilder = FlowRuleOperations.builder();
if (fwd.flag() != ForwardingObjective.Flag.VERSATILE) {
throw new UnsupportedOperationException(
"Only VERSATILE is supported.");
}
TrafficSelector selector = fwd.selector();
TrafficTreatment treatment = fwd.treatment();
if ((fwd.treatment().deferred().size() == 0) &&
(fwd.treatment().immediate().size() == 0) &&
(fwd.treatment().tableTransition() == null) &&
(!fwd.treatment().clearedDeferred())) {
TrafficTreatment.Builder flowTreatment = DefaultTrafficTreatment.builder();
flowTreatment.add(Instructions.createDrop());
treatment = flowTreatment.build();
}
FlowRule.Builder ruleBuilder = DefaultFlowRule.builder()
.forDevice(deviceId)
.withSelector(selector)
.withTreatment(treatment)
.fromApp(fwd.appId())
.withPriority(fwd.priority());
if (fwd.permanent()) {
ruleBuilder.makePermanent();
} else {
ruleBuilder.makeTemporary(fwd.timeout());
}
switch (fwd.op()) {
case ADD:
flowBuilder.add(ruleBuilder.build());
break;
case REMOVE:
flowBuilder.remove(ruleBuilder.build());
break;
default:
log.warn("Unknown operation {}", fwd.op());
}
flowRuleService.apply(flowBuilder.build(new FlowRuleOperationsContext() {
@Override
public void onSuccess(FlowRuleOperations ops) {
if (fwd.context().isPresent()) {
fwd.context().get().onSuccess(fwd);
}
}
@Override
public void onError(FlowRuleOperations ops) {
if (fwd.context().isPresent()) {
fwd.context().get().onError(fwd, ObjectiveError.FLOWINSTALLATIONFAILED);
}
}
}));
}
@Override
public void next(NextObjective nextObjective) {}
}
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