blob: 0881c0826ee4dfd9771d2e959eb4ed5d960d77b1 (
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
|
/*
* ============LICENSE_START====================================
* DCAEGEN2-SERVICES-SDK
* =========================================================
* Copyright (C) 2019 Nokia. 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.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import io.vavr.Lazy;
import io.vavr.control.Option;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.Map.Entry;
import java.util.stream.Collectors;
import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.exceptions.StreamParsingException;
import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.dmaap.mr.GsonAdaptersMessageRouterDmaapInfo;
import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.kafka.GsonAdaptersKafkaInfo;
import org.onap.dcaegen2.services.sdk.model.streams.GsonAdaptersAafCredentials;
import org.onap.dcaegen2.services.sdk.model.streams.dmaap.GsonAdaptersDataRouterSink;
import org.onap.dcaegen2.services.sdk.model.streams.dmaap.GsonAdaptersDataRouterSource;
/**
* @author <a href="mailto:piotr.jaszczyk@nokia.com">Piotr Jaszczyk</a>
* @since March 2019
*/
public final class GsonUtils {
private static final Lazy<Gson> GSON = Lazy.of(() -> {
GsonBuilder gsonBuilder = new GsonBuilder();
gsonBuilder.registerTypeAdapterFactory(new GsonAdaptersKafkaInfo());
gsonBuilder.registerTypeAdapterFactory(new GsonAdaptersAafCredentials());
gsonBuilder.registerTypeAdapterFactory(new GsonAdaptersMessageRouterDmaapInfo());
gsonBuilder.registerTypeAdapterFactory(new GsonAdaptersDataRouterSink());
gsonBuilder.registerTypeAdapterFactory(new GsonAdaptersDataRouterSource());
return gsonBuilder.create();
});
private GsonUtils() {
}
public static Gson gsonInstance() {
return GSON.get();
}
public static String requiredString(JsonObject parent, String childName) {
return requiredChild(parent, childName).getAsString();
}
public static Option<String> optionalString(JsonObject parent, String childName) {
return Option.of(parent.get(childName).getAsString());
}
public static JsonElement requiredChild(JsonObject parent, String childName) {
return optionalChild(parent, childName)
.getOrElseThrow(() -> new StreamParsingException(
"Could not find sub-node '" + childName + "'. Actual sub-nodes: "
+ stringifyChildrenNames(parent)));
}
public static Option<JsonElement> optionalChild(JsonObject parent, String childName) {
return Option.of(parent.get(childName));
}
public static JsonObject readObjectFromResource(String resource) throws IOException {
return readFromResource(resource).getAsJsonObject();
}
public static JsonArray readObjectArrayFromResource(String resource) throws IOException{
return readFromResource(resource).getAsJsonArray();
}
public static JsonElement readFromResource(String resource) throws IOException {
try (Reader reader = new InputStreamReader(GsonUtils.class.getResourceAsStream(resource))) {
return new JsonParser().parse(reader);
}
}
private static String stringifyChildrenNames(JsonObject parent) {
return parent.entrySet().stream().map(Entry::getKey).collect(Collectors.joining(", "));
}
}
|
