2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2018 Ericsson. All rights reserved.
4 * Copyright (C) 2019 Nordix Foundation.
5 * Modifications Copyright (C) 2020 AT&T Inc.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
19 * SPDX-License-Identifier: Apache-2.0
20 * ============LICENSE_END=========================================================
23 package org.onap.policy.distribution.reception.parameters;
25 import com.google.gson.JsonDeserializationContext;
26 import com.google.gson.JsonDeserializer;
27 import com.google.gson.JsonElement;
28 import com.google.gson.JsonObject;
29 import com.google.gson.JsonPrimitive;
31 import java.lang.reflect.Type;
33 import org.slf4j.Logger;
34 import org.slf4j.LoggerFactory;
37 * This class deserialises reception handler parameters from JSON.
39 public class ReceptionHandlerConfigurationParametersJsonAdapter
40 implements JsonDeserializer<ReceptionHandlerConfigurationParameterGroup> {
41 private static final Logger LOGGER =
42 LoggerFactory.getLogger(ReceptionHandlerConfigurationParametersJsonAdapter.class);
44 private static final String PARAMETER_CLASS_NAME = "parameterClassName";
45 private static final String RECEPTION_HANDLER_PARAMETERS = "parameters";
48 public ReceptionHandlerConfigurationParameterGroup deserialize(final JsonElement json, final Type typeOfT,
49 final JsonDeserializationContext context) {
50 final JsonObject jsonObject = json.getAsJsonObject();
52 final String receptionHandlerParameterClassName = getParameterGroupClassName(jsonObject);
53 final Class<?> receptionHandlerParameterClass = getParameterGroupClass(receptionHandlerParameterClassName);
55 return context.deserialize(jsonObject.get(RECEPTION_HANDLER_PARAMETERS), receptionHandlerParameterClass);
58 private String getParameterGroupClassName(final JsonObject jsonObject) {
59 final JsonPrimitive classNameJsonPrimitive = ((JsonPrimitive) jsonObject.get(PARAMETER_CLASS_NAME));
61 if (classNameJsonPrimitive == null || classNameJsonPrimitive.getAsString().length() == 0) {
62 final String errorMessage = "parameter \"" + PARAMETER_CLASS_NAME + "\" value \""
63 + (classNameJsonPrimitive != null ? classNameJsonPrimitive.getAsString() : "null")
64 + "\" invalid in JSON file";
65 LOGGER.warn(errorMessage);
66 throw new IllegalArgumentException(errorMessage);
68 return classNameJsonPrimitive.getAsString().replaceAll("\\s+", "");
71 private Class<?> getParameterGroupClass(final String receptionHAndlerParameterClassName) {
72 Class<?> receptionHandlerParameterClass = null;
74 receptionHandlerParameterClass = Class.forName(receptionHAndlerParameterClassName);
75 } catch (final ClassNotFoundException e) {
76 final String errorMessage = "parameter \"" + PARAMETER_CLASS_NAME + "\" value \""
77 + receptionHAndlerParameterClassName + "\", could not find class";
78 throw new IllegalArgumentException(errorMessage, e);
80 return receptionHandlerParameterClass;