blob: 20e701bc7544bb0bb74007cbbcb7f0849a580477 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2016-2018 Ericsson. 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.policy.apex.plugins.context.schema.avro;
import java.nio.ByteBuffer;
import org.apache.avro.Schema;
import org.apache.avro.Schema.Type;
import org.onap.policy.apex.context.ContextRuntimeException;
import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
import org.slf4j.ext.XLogger;
import org.slf4j.ext.XLoggerFactory;
/**
* This class does string mapping from the Avro BYTES type to a Java byte array.
*
* @author Liam Fallon (liam.fallon@ericsson.com)
*/
public class AvroBytesObjectMapper implements AvroObjectMapper {
// Get a reference to the logger
private static final XLogger LOGGER = XLoggerFactory.getXLogger(AvroBytesObjectMapper.class);
// The user keyAvro type for direct mapping
private AxKey userKey;
private Type avroType;
// The Apex compatible class
private final Class<Byte[]> schemaClass = Byte[].class;
/*
* (non-Javadoc)
*
* @see org.onap.policy.apex.plugins.context.schema.avro.AvroObjectMapper#getJavaClass()
*/
@Override
public Class<?> getJavaClass() {
return schemaClass;
}
/*
* (non-Javadoc)
*
* @see
* org.onap.policy.apex.plugins.context.schema.avro.AvroObjectMapper#setAvroType(org.apache.
* avro. Schema.Type)
*/
@Override
public void init(final AxKey intUserKey, final Type initAvroType) {
this.userKey = intUserKey;
this.avroType = initAvroType;
}
/*
* (non-Javadoc)
*
* @see org.onap.policy.apex.plugins.context.schema.avro.AvroObjectMapper#createNewinstance(org.
* apache. avro.Schema)
*/
@Override
public Object createNewInstance(final Schema avroSchema) {
// By default, we do not create an instance, normal Java object creation for byte arrays is
// sufficient
return null;
}
/*
* (non-Javadoc)
*
* @see org.onap.policy.apex.plugins.context.schema.avro.AvroObjectMapper#getAvroType()
*/
@Override
public Type getAvroType() {
return avroType;
}
/*
* (non-Javadoc)
*
* @see org.onap.policy.apex.plugins.context.schema.avro.AvroObjectMapper#mapFromAvro(java.lang.
* Object)
*/
@Override
public Object mapFromAvro(final Object avroObject) {
// The Avro object should be a Utf8 object
if (!(avroObject instanceof ByteBuffer)) {
final String returnString =
userKey.getId() + ": object \"" + avroObject + "\" of class \"" + avroObject.getClass()
+ "\" cannot be decoded to an object of class \"" + schemaClass.getCanonicalName() + "\"";
LOGGER.warn(returnString);
throw new ContextRuntimeException(returnString);
}
// Cast the byte buffer object so we get access to its methods
final ByteBuffer byteBufferAvroObject = (ByteBuffer) avroObject;
// read the byte buffer into a byte array
final byte[] byteArray = new byte[byteBufferAvroObject.remaining()];
byteBufferAvroObject.get(byteArray);
return byteArray;
}
/*
* (non-Javadoc)
*
* @see
* org.onap.policy.apex.plugins.context.schema.avro.AvroObjectMapper#mapToAvro(java.lang.Object)
*/
@Override
public Object mapToAvro(final Object object) {
if (object == null) {
final String returnString = userKey.getId() + ": cannot encode a null object of class \""
+ schemaClass.getCanonicalName() + "\"";
LOGGER.warn(returnString);
throw new ContextRuntimeException(returnString);
}
// The incoming object should be a byte array
if (!(object instanceof byte[])) {
final String returnString = userKey.getId() + ": object \"" + object + "\" of class \"" + object.getClass()
+ "\" cannot be decoded to an object of class \"" + schemaClass.getCanonicalName() + "\"";
LOGGER.warn(returnString);
throw new ContextRuntimeException(returnString);
}
// Create a ByteBuffer object to serialize the bytes
final ByteBuffer byteBuffer = ByteBuffer.wrap((byte[]) object);
return byteBuffer;
}
}
|
