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
|
/*
* Copyright (C) 2021 Samsung Electronics
* 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
*/
package org.onap.rapp.datacollector.service;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonArray;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import org.onap.rapp.datacollector.entity.ves.AdditionalMeasurements;
import org.onap.rapp.datacollector.entity.ves.CommonEventHeader;
import org.onap.rapp.datacollector.entity.ves.Event;
import org.onap.rapp.datacollector.entity.ves.MeasurementFields;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
@Service
public class VesParserImpl implements VesParser {
private static final Logger logger = LoggerFactory.getLogger(VesParserImpl.class);
private static class VesEventDeserializer implements JsonDeserializer<Event> {
private static class AdditionalMeasurementsRawValue {
String name;
Map<String, String> hashMap;
}
@Override
public Event deserialize(JsonElement jsonElement, Type type, JsonDeserializationContext jsonDeserializationContext) throws JsonParseException {
JsonObject obj = jsonElement.getAsJsonObject();
obj = obj.getAsJsonObject("event");
CommonEventHeader header;
Optional<MeasurementFields> measurementFields = Optional.empty();
List<AdditionalMeasurements> additionalMeasurements = Collections.emptyList();
if (obj.has("commonEventHeader")) {
JsonObject h = obj.getAsJsonObject("commonEventHeader");
header = jsonDeserializationContext.deserialize(h, CommonEventHeader.class);
} else {
throw new JsonParseException("Common header not found");
}
if (obj.has("measurementFields")) {
JsonObject h = obj.getAsJsonObject("measurementFields");
measurementFields = Optional.ofNullable(jsonDeserializationContext.deserialize(h, MeasurementFields.class));
if (h.has("additionalMeasurements")) {
JsonArray arr = h.getAsJsonArray("additionalMeasurements");
additionalMeasurements = new ArrayList<>();
for (int i = 0; i < arr.size(); i++) {
AdditionalMeasurementsRawValue tmp = jsonDeserializationContext.deserialize(arr.get(i).getAsJsonObject(), AdditionalMeasurementsRawValue.class);
additionalMeasurements.add(AdditionalMeasurements.builder()
.withName(tmp.name)
.withHashMap(tmp.hashMap)
.build());
}
}
}
logger.trace("measurement fields {}", measurementFields);
logger.trace("additional measurements {}", additionalMeasurements);
measurementFields = Optional.of(MeasurementFields.builder()
.measurementInterval(measurementFields.orElse(MeasurementFields.EMPTY).measurementInterval)
.additionalMeasurements(additionalMeasurements)
.build());
return Event.of(header, measurementFields.get());
}
}
private final Gson gson = new GsonBuilder()
.registerTypeAdapter(Event.class, new VesEventDeserializer())
.create();
public Event parse(final String event) {
logger.debug("parsing ves event {}", event);
final Event result = gson.fromJson(event, Event.class);
result.raw = event;
return result;
}
}
|
