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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
/*-
* ============LICENSE_START=======================================================
* ONAP - CCSDK
* ================================================================================
* Copyright (C) 2018 Huawei Technologies Co., Ltd. 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.ccsdk.sli.plugins.yangserializers.dfserializer;
import com.google.gson.stream.JsonWriter;
import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
import java.util.Collection;
import java.util.Map;
import org.onap.ccsdk.sli.core.sli.SvcLogicException;
import org.onap.ccsdk.sli.plugins.yangserializers.pnserializer.DefaultPropertiesNodeWalker;
import org.onap.ccsdk.sli.plugins.yangserializers.pnserializer.LeafNode;
import org.onap.ccsdk.sli.plugins.yangserializers.pnserializer.Namespace;
import org.onap.ccsdk.sli.plugins.yangserializers.pnserializer.PropertiesNode;
import org.onap.ccsdk.sli.plugins.yangserializers.pnserializer.PropertiesNodeListener;
import org.onap.ccsdk.sli.plugins.yangserializers.pnserializer.RootNode;
import static com.google.common.base.Strings.repeat;
import static java.lang.String.format;
import static org.onap.ccsdk.sli.plugins.yangserializers.dfserializer.DfSerializerUtil.JSON_WRITE_ERR;
import static org.onap.ccsdk.sli.plugins.yangserializers.dfserializer.DfSerializerUtil.NODE_TYPE_ERR;
/**
* Representation of JSON implementation of properties node listener.
*/
public class PropertiesNodeJsonListener implements PropertiesNodeListener{
/**
* JSON writer to write the JSON data format.
*/
private JsonWriter jsonWriter;
/**
* Writer to write the JSON.
*/
private Writer writer;
/**
* Creates the properties node JSON listener by instantiating and
* indenting the writer.
*/
public PropertiesNodeJsonListener() {
writer = new StringWriter();
jsonWriter = new JsonWriter(writer);
jsonWriter.setIndent(repeat(" ", 4));
}
@Override
public void start(PropertiesNode node) throws SvcLogicException {
try {
jsonWriter.beginObject();
} catch (IOException e) {
throw new SvcLogicException(JSON_WRITE_ERR, e);
}
}
@Override
public void end(PropertiesNode node) throws SvcLogicException {
try {
jsonWriter.endObject();
jsonWriter.flush();
} catch (IOException e) {
throw new SvcLogicException(JSON_WRITE_ERR, e);
}
}
@Override
public void enterPropertiesNode(PropertiesNode node)
throws SvcLogicException {
String val;
String nodeName = getNodeName(node);
try {
switch (node.nodeType()) {
case SINGLE_INSTANCE_NODE:
jsonWriter.name(nodeName);
jsonWriter.beginObject();
break;
case MULTI_INSTANCE_NODE:
jsonWriter.beginObject();
break;
case SINGLE_INSTANCE_LEAF_NODE:
val = getValueWithNs((LeafNode) node);
jsonWriter.name(nodeName).value(val);
break;
case MULTI_INSTANCE_HOLDER_NODE:
case MULTI_INSTANCE_LEAF_HOLDER_NODE:
jsonWriter.name(nodeName);
jsonWriter.beginArray();
break;
case MULTI_INSTANCE_LEAF_NODE:
val = getValueWithNs((LeafNode) node);
jsonWriter.value(val);
break;
case ANY_XML_NODE:
jsonWriter.name(nodeName);
val = ((LeafNode) node).value();
try {
jsonWriter.jsonValue(val);
} catch (IOException e) {
throw new SvcLogicException(JSON_WRITE_ERR, e);
}
break;
default:
throw new SvcLogicException(format(
NODE_TYPE_ERR, node.nodeType().toString()));
}
} catch (IOException e) {
throw new SvcLogicException(JSON_WRITE_ERR, e);
}
}
@Override
public void exitPropertiesNode(PropertiesNode node) throws SvcLogicException {
walkAugmentationNode(node);
try {
switch (node.nodeType()) {
case SINGLE_INSTANCE_NODE:
case MULTI_INSTANCE_NODE:
jsonWriter.endObject();
break;
case MULTI_INSTANCE_HOLDER_NODE:
case MULTI_INSTANCE_LEAF_HOLDER_NODE:
jsonWriter.endArray();
break;
case SINGLE_INSTANCE_LEAF_NODE:
case MULTI_INSTANCE_LEAF_NODE:
case ANY_XML_NODE:
break;
default:
throw new SvcLogicException(format(
NODE_TYPE_ERR, node.nodeType().toString()));
}
} catch (IOException e) {
throw new SvcLogicException(JSON_WRITE_ERR, e);
}
}
/**
* Returns the writer.
*
* @return writer
*/
public Writer getWriter() {
return writer;
}
/**
* Returns the abstract JSON node name to be used in JSON data format
* from the properties node.
*
* @param node properties node
* @return abstract JSON node
*/
private String getNodeName(PropertiesNode node) {
PropertiesNode parent = node.parent();
if (parent instanceof RootNode || !parent.namespace().moduleName()
.equals(node.namespace().moduleName())) {
if (!parent.nonAppend()) {
return node.namespace().moduleName() + ":" + node.name();
}
}
return node.name();
}
/**
* Returns the value of JSON leaf node with module name if required.
*
* @param node properties node
* @return value with namespace
*/
private String getValueWithNs(LeafNode node) {
Namespace valNs = node.valueNs();
String modName = (valNs == null) ? null : valNs.moduleName();
if (modName != null) {
return modName + ":" + node.value();
}
return node.value();
}
/**
* Gets all the augmentation of the given node and walks through it.
*
* @param node properties node
* @throws SvcLogicException when walking the properties node fails
*/
private void walkAugmentationNode(PropertiesNode node)
throws SvcLogicException {
for (Map.Entry<Object, Collection<PropertiesNode>>
augToChild : node.augmentations().asMap().entrySet()) {
Collection<PropertiesNode> augChild = augToChild.getValue();
if (!augChild.isEmpty()) {
DefaultPropertiesNodeWalker walker = new
DefaultPropertiesNodeWalker();
for (PropertiesNode p : augChild) {
enterPropertiesNode(p);
walker.walkChildNode(this, p);
exitPropertiesNode(p);
}
}
}
}
}
|
