2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2016-2018 Ericsson. All rights reserved.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.apex.plugins.context.schema.avro;
23 import java.nio.ByteBuffer;
25 import org.apache.avro.Schema;
26 import org.apache.avro.Schema.Type;
27 import org.onap.policy.apex.context.ContextRuntimeException;
28 import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
29 import org.slf4j.ext.XLogger;
30 import org.slf4j.ext.XLoggerFactory;
33 * This class does string mapping from the Avro BYTES type to a Java byte array.
35 * @author Liam Fallon (liam.fallon@ericsson.com)
37 public class AvroBytesObjectMapper implements AvroObjectMapper {
38 // Get a reference to the logger
39 private static final XLogger LOGGER = XLoggerFactory.getXLogger(AvroBytesObjectMapper.class);
41 // The user keyAvro type for direct mapping
42 private AxKey userKey;
43 private Type avroType;
45 // The Apex compatible class
46 private static final Class<Byte[]> schemaClass = Byte[].class;
51 * @see org.onap.policy.apex.plugins.context.schema.avro.AvroObjectMapper#getJavaClass()
54 public Class<?> getJavaClass() {
62 * org.onap.policy.apex.plugins.context.schema.avro.AvroObjectMapper#setAvroType(org.apache.
66 public void init(final AxKey intUserKey, final Type initAvroType) {
67 this.userKey = intUserKey;
68 this.avroType = initAvroType;
74 * @see org.onap.policy.apex.plugins.context.schema.avro.AvroObjectMapper#createNewinstance(org.
75 * apache. avro.Schema)
78 public Object createNewInstance(final Schema avroSchema) {
79 // By default, we do not create an instance, normal Java object creation for byte arrays is
87 * @see org.onap.policy.apex.plugins.context.schema.avro.AvroObjectMapper#getAvroType()
90 public Type getAvroType() {
97 * @see org.onap.policy.apex.plugins.context.schema.avro.AvroObjectMapper#mapFromAvro(java.lang.
101 public Object mapFromAvro(final Object avroObject) {
102 // The Avro object should be a Utf8 object
103 if (!(avroObject instanceof ByteBuffer)) {
104 final String returnString =
105 userKey.getId() + ": object \"" + avroObject + "\" of class \"" + avroObject.getClass()
106 + "\" cannot be decoded to an object of class \"" + schemaClass.getCanonicalName() + "\"";
107 LOGGER.warn(returnString);
108 throw new ContextRuntimeException(returnString);
111 // Cast the byte buffer object so we get access to its methods
112 final ByteBuffer byteBufferAvroObject = (ByteBuffer) avroObject;
114 // read the byte buffer into a byte array
115 final byte[] byteArray = new byte[byteBufferAvroObject.remaining()];
116 byteBufferAvroObject.get(byteArray);
125 * org.onap.policy.apex.plugins.context.schema.avro.AvroObjectMapper#mapToAvro(java.lang.Object)
128 public Object mapToAvro(final Object object) {
129 if (object == null) {
130 final String returnString = userKey.getId() + ": cannot encode a null object of class \""
131 + schemaClass.getCanonicalName() + "\"";
132 LOGGER.warn(returnString);
133 throw new ContextRuntimeException(returnString);
136 // The incoming object should be a byte array
137 if (!(object instanceof byte[])) {
138 final String returnString = userKey.getId() + ": object \"" + object + "\" of class \"" + object.getClass()
139 + "\" cannot be decoded to an object of class \"" + schemaClass.getCanonicalName() + "\"";
140 LOGGER.warn(returnString);
141 throw new ContextRuntimeException(returnString);
144 // Create a ByteBuffer object to serialize the bytes
145 return ByteBuffer.wrap((byte[]) object);