Removing deprecated DMAAP library

[policy/drools-pdp.git] / feature-pooling-dmaap / src / main / java / org / onap / policy / drools / pooling / Serializer.java

diff --git a/feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/Serializer.java b/feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/Serializer.java
deleted file mode 100644 (file)
index 15c98e0..0000000
--- a/feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/Serializer.java
+++ /dev/null
@@ -1,123 +0,0 @@
-/*
- * ============LICENSE_START=======================================================
- * ONAP
- * ================================================================================
- * Copyright (C) 2018-2021 AT&T Intellectual Property. All rights reserved.
- * ================================================================================
- * 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.
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.drools.pooling;
-
-import com.google.gson.Gson;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonParseException;
-import java.util.HashMap;
-import java.util.Map;
-import org.onap.policy.drools.pooling.message.Heartbeat;
-import org.onap.policy.drools.pooling.message.Identification;
-import org.onap.policy.drools.pooling.message.Leader;
-import org.onap.policy.drools.pooling.message.Message;
-import org.onap.policy.drools.pooling.message.Offline;
-import org.onap.policy.drools.pooling.message.Query;
-
-/**
- * Serialization helper functions.
- */
-public class Serializer {
-
-    /**
-     * The message type is stored in fields of this name within the JSON.
-     */
-    private static final String TYPE_FIELD = "type";
-
-    /**
-     * Used to encode & decode JSON messages sent & received, respectively, on the
-     * internal DMaaP topic.
-     */
-    private final Gson gson = new Gson();
-
-    /**
-     * Maps a message subclass to its type.
-     */
-    private static final Map<Class<? extends Message>, String> class2type = new HashMap<>();
-
-    /**
-     * Maps a message type to the appropriate subclass.
-     */
-    private static final Map<String, Class<? extends Message>> type2class = new HashMap<>();
-
-    static {
-        class2type.put(Heartbeat.class, "heartbeat");
-        class2type.put(Identification.class, "identification");
-        class2type.put(Leader.class, "leader");
-        class2type.put(Offline.class, "offline");
-        class2type.put(Query.class, "query");
-
-        class2type.forEach((clazz, type) -> type2class.put(type, clazz));
-    }
-
-    /**
-     * Encodes a filter.
-     *
-     * @param filter filter to be encoded
-     * @return the filter, serialized as a JSON string
-     */
-    public String encodeFilter(Map<String, Object> filter) {
-        return gson.toJson(filter);
-    }
-
-    /**
-     * Encodes a message.
-     *
-     * @param msg message to be encoded
-     * @return the message, serialized as a JSON string
-     */
-    public String encodeMsg(Message msg) {
-        JsonElement jsonEl = gson.toJsonTree(msg);
-
-        String type = class2type.get(msg.getClass());
-        if (type == null) {
-            throw new JsonParseException("cannot serialize " + msg.getClass());
-        }
-
-        jsonEl.getAsJsonObject().addProperty(TYPE_FIELD, type);
-
-        return gson.toJson(jsonEl);
-    }
-
-    /**
-     * Decodes a JSON string into a Message.
-     *
-     * @param msg JSON string representing the message
-     * @return the message
-     */
-    public Message decodeMsg(String msg) {
-        JsonElement jsonEl = gson.fromJson(msg, JsonElement.class);
-
-        JsonElement typeEl = jsonEl.getAsJsonObject().get(TYPE_FIELD);
-        if (typeEl == null) {
-            throw new JsonParseException("cannot deserialize " + Message.class
-                            + " because it does not contain a field named " + TYPE_FIELD);
-
-        }
-
-        Class<? extends Message> clazz = type2class.get(typeEl.getAsString());
-        if (clazz == null) {
-            throw new JsonParseException("cannot deserialize " + typeEl);
-        }
-
-        return gson.fromJson(jsonEl, clazz);
-    }
-}