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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 java.util.ArrayList;
import java.util.stream.IntStream;
import org.onosproject.codec.CodecContext;
import org.onosproject.codec.JsonCodec;
import org.onosproject.net.flow.TrafficSelector;
import org.onosproject.net.flow.TrafficTreatment;
import org.onosproject.net.intent.ConnectivityIntent;
import org.onosproject.net.intent.Constraint;
import org.onosproject.net.intent.Intent;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* Connectivity intent codec.
*/
public final class ConnectivityIntentCodec extends JsonCodec<ConnectivityIntent> {
private static final String CONSTRAINTS = "constraints";
private static final String SELECTOR = "selector";
private static final String TREATMENT = "treatment";
@Override
public ObjectNode encode(ConnectivityIntent intent, CodecContext context) {
checkNotNull(intent, "Connectivity intent cannot be null");
final JsonCodec<Intent> intentCodec = context.codec(Intent.class);
final ObjectNode result = intentCodec.encode(intent, context);
if (intent.selector() != null) {
final JsonCodec<TrafficSelector> selectorCodec =
context.codec(TrafficSelector.class);
result.set(SELECTOR, selectorCodec.encode(intent.selector(), context));
}
if (intent.treatment() != null) {
final JsonCodec<TrafficTreatment> treatmentCodec =
context.codec(TrafficTreatment.class);
result.set(TREATMENT, treatmentCodec.encode(intent.treatment(), context));
}
result.put(IntentCodec.PRIORITY, intent.priority());
if (intent.constraints() != null) {
final ArrayNode jsonConstraints = result.putArray(CONSTRAINTS);
if (intent.constraints() != null) {
final JsonCodec<Constraint> constraintCodec =
context.codec(Constraint.class);
for (final Constraint constraint : intent.constraints()) {
final ObjectNode constraintNode =
constraintCodec.encode(constraint, context);
jsonConstraints.add(constraintNode);
}
}
}
return result;
}
/**
* Extracts connectivity intent specific attributes from a JSON object
* and adds them to a builder.
*
* @param json root JSON object
* @param context code context
* @param builder builder to use for storing the attributes. Constraints,
* selector and treatment are modified by this call.
*/
public static void intentAttributes(ObjectNode json, CodecContext context,
ConnectivityIntent.Builder builder) {
JsonNode constraintsJson = json.get(CONSTRAINTS);
if (constraintsJson != null) {
JsonCodec<Constraint> constraintsCodec = context.codec(Constraint.class);
ArrayList<Constraint> constraints = new ArrayList<>(constraintsJson.size());
IntStream.range(0, constraintsJson.size())
.forEach(i -> constraints.add(
constraintsCodec.decode(get(constraintsJson, i),
context)));
builder.constraints(constraints);
}
ObjectNode selectorJson = get(json, SELECTOR);
if (selectorJson != null) {
JsonCodec<TrafficSelector> selectorCodec = context.codec(TrafficSelector.class);
TrafficSelector selector = selectorCodec.decode(selectorJson, context);
builder.selector(selector);
}
ObjectNode treatmentJson = get(json, TREATMENT);
if (treatmentJson != null) {
JsonCodec<TrafficTreatment> treatmentCodec = context.codec(TrafficTreatment.class);
TrafficTreatment treatment = treatmentCodec.decode(treatmentJson, context);
builder.treatment(treatment);
}
}
}
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