[ONOS-3108] FlowClassifier codec for SFC.

Change-Id: Ib0697ce7d911c79d202a461bbadeb155ab315396

+/*
+ * 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.vtnrsc.web;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static org.onlab.util.Tools.nullIsIllegal;
+
+import java.util.UUID;
+
+import org.onlab.packet.IpPrefix;
+import org.onosproject.codec.CodecContext;
+import org.onosproject.codec.JsonCodec;
+import org.onosproject.vtnrsc.DefaultFlowClassifier;
+import org.onosproject.vtnrsc.FlowClassifier;
+import org.onosproject.vtnrsc.FlowClassifierId;
+import org.onosproject.vtnrsc.VirtualPortId;
+import org.onosproject.vtnrsc.TenantId;
+
+import com.fasterxml.jackson.databind.node.ObjectNode;
+
+/**
+ * Flow Classifier JSON codec.
+ */
+public final class FlowClassifierCodec extends JsonCodec<FlowClassifier> {
+
+    private static final String FLOW_CLASSIFIER_ID = "id";
+    private static final String TENANT_ID = "tenant_id";
+    private static final String NAME = "name";
+    private static final String DESCRIPTION = "description";
+    private static final String ETHER_TYPE = "etherType";
+    private static final String PROTOCOL = "protocol";
+    private static final String MIN_SRC_PORT_RANGE = "source_port_range_min";
+    private static final String MAX_SRC_PORT_RANGE = "source_port_range_max";
+    private static final String MIN_DST_PORT_RANGE = "destination_port_range_min";
+    private static final String MAX_DST_PORT_RANGE = "destination_port_range_max";
+    private static final String SRC_IP_PREFIX = "source_ip_prefix";
+    private static final String DST_IP_PREFIX = "destination_ip_prefix";
+    private static final String SRC_PORT = "logical_source_port";
+    private static final String DST_PORT = "logical_destination_port";
+    private static final String MISSING_MEMBER_MESSAGE = " member is required in Flow Classifier.";
+
+    @Override
+    public FlowClassifier decode(ObjectNode json, CodecContext context) {
+        if (json == null || !json.isObject()) {
+            return null;
+        }
+
+        FlowClassifier.Builder resultBuilder = new DefaultFlowClassifier.Builder();
+
+        String flowClassifierId = nullIsIllegal(json.get(FLOW_CLASSIFIER_ID),
+                FLOW_CLASSIFIER_ID + MISSING_MEMBER_MESSAGE).asText();
+        resultBuilder.setFlowClassifierId(FlowClassifierId.flowClassifierId(UUID.fromString(flowClassifierId)));
+
+        String tenantId = nullIsIllegal(json.get(TENANT_ID), TENANT_ID + MISSING_MEMBER_MESSAGE).asText();
+        resultBuilder.setTenantId(TenantId.tenantId(tenantId));
+
+        String flowClassiferName = nullIsIllegal(json.get(NAME), NAME + MISSING_MEMBER_MESSAGE).asText();
+        resultBuilder.setName(flowClassiferName);
+
+        String flowClassiferDescription = nullIsIllegal(json.get(DESCRIPTION), DESCRIPTION + MISSING_MEMBER_MESSAGE)
+                .asText();
+        resultBuilder.setDescription(flowClassiferDescription);
+
+        String etherType = nullIsIllegal(json.get(ETHER_TYPE), ETHER_TYPE + MISSING_MEMBER_MESSAGE).asText();
+        resultBuilder.setEtherType(etherType);
+
+        String protocol = nullIsIllegal(json.get(PROTOCOL), PROTOCOL + MISSING_MEMBER_MESSAGE).asText();
+        resultBuilder.setProtocol(protocol);
+
+        int minSrcPortRange = nullIsIllegal(json.get(MIN_SRC_PORT_RANGE), MIN_SRC_PORT_RANGE + MISSING_MEMBER_MESSAGE)
+                .asInt();
+        resultBuilder.setMinSrcPortRange(minSrcPortRange);
+
+        int maxSrcPortRange = nullIsIllegal(json.get(MAX_SRC_PORT_RANGE), MAX_SRC_PORT_RANGE + MISSING_MEMBER_MESSAGE)
+                .asInt();
+        resultBuilder.setMaxSrcPortRange(maxSrcPortRange);
+
+        int minDstPortRange = nullIsIllegal(json.get(MIN_DST_PORT_RANGE), MIN_DST_PORT_RANGE + MISSING_MEMBER_MESSAGE)
+                .asInt();
+        resultBuilder.setMinDstPortRange(minDstPortRange);
+
+        int maxDstPortRange = nullIsIllegal(json.get(MAX_DST_PORT_RANGE), MAX_DST_PORT_RANGE + MISSING_MEMBER_MESSAGE)
+                .asInt();
+        resultBuilder.setMaxDstPortRange(maxDstPortRange);
+
+        String srcIpPrefix = nullIsIllegal(json.get(SRC_IP_PREFIX), SRC_IP_PREFIX + MISSING_MEMBER_MESSAGE).asText();
+        resultBuilder.setSrcIpPrefix(IpPrefix.valueOf(srcIpPrefix));
+
+        String dstIpPrefix = nullIsIllegal(json.get(DST_IP_PREFIX), DST_IP_PREFIX + MISSING_MEMBER_MESSAGE).asText();
+        resultBuilder.setDstIpPrefix(IpPrefix.valueOf(dstIpPrefix));
+
+        String srcPort = nullIsIllegal(json.get(SRC_PORT), SRC_PORT + MISSING_MEMBER_MESSAGE).asText();
+        resultBuilder.setSrcPort(VirtualPortId.portId(srcPort));
+
+        String dstPort = nullIsIllegal(json.get(DST_PORT), DST_PORT + MISSING_MEMBER_MESSAGE).asText();
+        resultBuilder.setDstPort(VirtualPortId.portId(dstPort));
+
+        return resultBuilder.build();
+    }
+
+    @Override
+    public ObjectNode encode(FlowClassifier flowClassifier, CodecContext context) {
+        checkNotNull(flowClassifier, "flowClassifier cannot be null");
+        ObjectNode result = context.mapper().createObjectNode()
+                .put("FLOW_CLASSIFIER_ID", flowClassifier.flowClassifierId().toString())
+                .put("TENANT_ID", flowClassifier.tenantId().toString())
+                .put("NAME", flowClassifier.name())
+                .put("DESCRIPTION", flowClassifier.description())
+                .put("ETHER_TYPE", flowClassifier.etherType())
+                .put("PROTOCOL", flowClassifier.protocol())
+                .put("MIN_SRC_PORT_RANGE", flowClassifier.minSrcPortRange())
+                .put("MAX_SRC_PORT_RANGE", flowClassifier.maxSrcPortRange())
+                .put("MIN_DST_PORT_RANGE", flowClassifier.minDstPortRange())
+                .put("MAX_DST_PORT_RANGE", flowClassifier.maxDstPortRange())
+                .put("SRC_IP_PREFIX", flowClassifier.srcIpPrefix().toString())
+                .put("DST_IP_PREFIX", flowClassifier.dstIpPrefix().toString())
+                .put("SRC_PORT", flowClassifier.srcPort().toString())
+                .put("DST_PORT", flowClassifier.dstPort().toString());
+        return result;
+    }
+}
\ No newline at end of file