[ONOS-6170] Implement codec for various MappingAddress primitives
Change-Id: I0f31408593d73c251d9ef84b4df5f6136d0f4b2f
diff --git a/apps/mappingmanagement/web/src/main/java/org/onosproject/mapping/web/codec/DecodeMappingAddressCodecHelper.java b/apps/mappingmanagement/web/src/main/java/org/onosproject/mapping/web/codec/DecodeMappingAddressCodecHelper.java
new file mode 100644
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+++ b/apps/mappingmanagement/web/src/main/java/org/onosproject/mapping/web/codec/DecodeMappingAddressCodecHelper.java
@@ -0,0 +1,148 @@
+/*
+ * Copyright 2017-present 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.mapping.web.codec;
+
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.google.common.collect.Maps;
+import org.onlab.packet.IpPrefix;
+import org.onlab.packet.MacAddress;
+import org.onosproject.mapping.addresses.MappingAddress;
+import org.onosproject.mapping.addresses.MappingAddresses;
+
+import java.util.Map;
+
+import static org.onlab.util.Tools.nullIsIllegal;
+
+/**
+ * Decode portion of the mapping address codec.
+ */
+public final class DecodeMappingAddressCodecHelper {
+
+ private final ObjectNode json;
+
+ protected static final String MISSING_MEMBER_MESSAGE =
+ " member is required in Mapping Address";
+
+ private final Map<String, MappingAddressDecoder> decoderMap;
+
+ /**
+ * Creates a decode mapping address codec object.
+ * Initializes the lookup map for mapping address subclass decoders.
+ *
+ * @param json JSON object to decode
+ */
+ public DecodeMappingAddressCodecHelper(ObjectNode json) {
+ this.json = json;
+ decoderMap = Maps.newHashMap();
+
+ decoderMap.put(MappingAddress.Type.IPV4.name(), new Ipv4TypeDecoder());
+ decoderMap.put(MappingAddress.Type.IPV6.name(), new Ipv6TypeDecoder());
+ decoderMap.put(MappingAddress.Type.AS.name(), new AsTypeDecoder());
+ decoderMap.put(MappingAddress.Type.DN.name(), new DnTypeDecoder());
+ decoderMap.put(MappingAddress.Type.ETH.name(), new EthTypeDecoder());
+ }
+
+ /**
+ * An interface of mapping address type decoder.
+ */
+ private interface MappingAddressDecoder {
+ MappingAddress decodeMappingAddress(ObjectNode json);
+ }
+
+ /**
+ * Implementation of IPv4 mapping address decoder.
+ */
+ private class Ipv4TypeDecoder implements MappingAddressDecoder {
+
+ @Override
+ public MappingAddress decodeMappingAddress(ObjectNode json) {
+ String ip = nullIsIllegal(json.get(MappingAddressCodec.IPV4),
+ MappingAddressCodec.IPV4 + MISSING_MEMBER_MESSAGE).asText();
+ return MappingAddresses.ipv4MappingAddress(IpPrefix.valueOf(ip));
+ }
+ }
+
+ /**
+ * Implementation of IPv6 mapping address decoder.
+ */
+ private class Ipv6TypeDecoder implements MappingAddressDecoder {
+
+ @Override
+ public MappingAddress decodeMappingAddress(ObjectNode json) {
+ String ip = nullIsIllegal(json.get(MappingAddressCodec.IPV6),
+ MappingAddressCodec.IPV6 + MISSING_MEMBER_MESSAGE).asText();
+ return MappingAddresses.ipv6MappingAddress(IpPrefix.valueOf(ip));
+ }
+ }
+
+ /**
+ * Implementation of AS mapping address decoder.
+ */
+ private class AsTypeDecoder implements MappingAddressDecoder {
+
+ @Override
+ public MappingAddress decodeMappingAddress(ObjectNode json) {
+ String as = nullIsIllegal(json.get(MappingAddressCodec.AS),
+ MappingAddressCodec.AS + MISSING_MEMBER_MESSAGE).asText();
+ return MappingAddresses.asMappingAddress(as);
+ }
+ }
+
+ /**
+ * Implementation of DN mapping address decoder.
+ */
+ private class DnTypeDecoder implements MappingAddressDecoder {
+
+ @Override
+ public MappingAddress decodeMappingAddress(ObjectNode json) {
+ String dn = nullIsIllegal(json.get(MappingAddressCodec.DN),
+ MappingAddressCodec.DN + MISSING_MEMBER_MESSAGE).asText();
+ return MappingAddresses.dnMappingAddress(dn);
+ }
+ }
+
+ /**
+ * Implementation of Ethernet mapping address decoder.
+ */
+ private class EthTypeDecoder implements MappingAddressDecoder {
+
+ @Override
+ public MappingAddress decodeMappingAddress(ObjectNode json) {
+ MacAddress mac = MacAddress.valueOf(nullIsIllegal(json.get(MappingAddressCodec.MAC),
+ MappingAddressCodec.MAC + MISSING_MEMBER_MESSAGE).asText());
+ return MappingAddresses.ethMappingAddress(mac);
+ }
+ }
+
+ /**
+ * Decodes the JSON into a mapping address object.
+ *
+ * @return MappingAddress object
+ * @throws IllegalArgumentException if the JSON is invalid
+ */
+ public MappingAddress decode() {
+ String type =
+ nullIsIllegal(json.get(MappingAddressCodec.TYPE),
+ "Type not specified").asText();
+
+ MappingAddressDecoder decoder = decoderMap.get(type);
+ if (decoder != null) {
+ return decoder.decodeMappingAddress(json);
+ }
+
+ throw new IllegalArgumentException("Type " + type + " is unknown");
+ }
+}