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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.codec.impl;
import org.onosproject.codec.CodecContext;
import org.onosproject.codec.JsonCodec;
import org.onosproject.core.CoreService;
import org.onosproject.net.DeviceId;
import org.onosproject.net.flow.DefaultFlowRule;
import org.onosproject.net.flow.FlowRule;
import org.onosproject.net.flow.TrafficSelector;
import org.onosproject.net.flow.TrafficTreatment;
import com.fasterxml.jackson.databind.node.ObjectNode;
import static org.onlab.util.Tools.nullIsIllegal;
/**
* Flow rule JSON codec.
*/
public final class FlowRuleCodec extends JsonCodec<FlowRule> {
private static final String PRIORITY = "priority";
private static final String TIMEOUT = "timeout";
private static final String IS_PERMANENT = "isPermanent";
private static final String DEVICE_ID = "deviceId";
private static final String TREATMENT = "treatment";
private static final String SELECTOR = "selector";
private static final String MISSING_MEMBER_MESSAGE =
" member is required in FlowRule";
public static final String REST_APP_ID = "org.onosproject.rest";
@Override
public FlowRule decode(ObjectNode json, CodecContext context) {
if (json == null || !json.isObject()) {
return null;
}
FlowRule.Builder resultBuilder = new DefaultFlowRule.Builder();
CoreService coreService = context.getService(CoreService.class);
resultBuilder.fromApp(coreService
.registerApplication(REST_APP_ID));
int priority = nullIsIllegal(json.get(PRIORITY),
PRIORITY + MISSING_MEMBER_MESSAGE).asInt();
resultBuilder.withPriority(priority);
boolean isPermanent = nullIsIllegal(json.get(IS_PERMANENT),
IS_PERMANENT + MISSING_MEMBER_MESSAGE).asBoolean();
if (isPermanent) {
resultBuilder.makePermanent();
} else {
resultBuilder.makeTemporary(nullIsIllegal(json.get(TIMEOUT),
TIMEOUT
+ MISSING_MEMBER_MESSAGE
+ " if the flow is temporary").asInt());
}
DeviceId deviceId = DeviceId.deviceId(nullIsIllegal(json.get(DEVICE_ID),
DEVICE_ID + MISSING_MEMBER_MESSAGE).asText());
resultBuilder.forDevice(deviceId);
ObjectNode treatmentJson = get(json, TREATMENT);
if (treatmentJson != null) {
JsonCodec<TrafficTreatment> treatmentCodec =
context.codec(TrafficTreatment.class);
resultBuilder.withTreatment(treatmentCodec.decode(treatmentJson, context));
}
ObjectNode selectorJson = get(json, SELECTOR);
if (selectorJson != null) {
JsonCodec<TrafficSelector> selectorCodec =
context.codec(TrafficSelector.class);
resultBuilder.withSelector(selectorCodec.decode(selectorJson, context));
}
return resultBuilder.build();
}
}
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