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
|
/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2019 AT&T Intellectual Property. 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.sdc.dcae.ves;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonIOException;
import com.google.gson.JsonSyntaxException;
import com.google.gson.reflect.TypeToken;
import org.apache.commons.lang.ArrayUtils;
import org.apache.commons.lang.StringUtils;
import org.onap.sdc.common.onaplog.OnapLoggerDebug;
import org.onap.sdc.common.onaplog.OnapLoggerError;
import org.onap.sdc.common.onaplog.enums.LogLevel;
import org.springframework.stereotype.Service;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import java.io.*;
import java.lang.reflect.Type;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;
@Service("vesstructureloader")
public class VesStructureLoader {
private static OnapLoggerError errLogger = OnapLoggerError.getInstance();
private static OnapLoggerDebug debugLogger = OnapLoggerDebug.getInstance();
private static Map<String, EventListenerDefinition> eventListeners = new HashMap<>();
private static final Type type = new TypeToken<VesDataItemsDefinition>(){}.getType();
private static final Gson gson = new GsonBuilder().registerTypeAdapter(type, new VesJsonDeserializer()).create();
private static final String SCHEMA_NAME_PREFIX = "CommonEventFormat_v";
private static final String SCHEMA_NAME_SUFFIX = ".json";
private VesStructureLoader() {
}
@PostConstruct
public void init() {
debugLogger.log(LogLevel.DEBUG, this.getClass().getName(), "VesStructureLoader: Trying to load json schemas");
String jettyBase = System.getProperty("jetty.base");
if (jettyBase == null) {
String msg = "Couldn't resolve jetty.base environmental variable";
errLogger.log(LogLevel.ERROR, this.getClass().getName(), msg);
throw new IllegalArgumentException(msg + ". Failed to load VES schema files... aborting");
}
debugLogger.log(LogLevel.DEBUG, this.getClass().getName(), "jetty.base={}", jettyBase);
File dir = new File(jettyBase + "/config/dcae-be/ves-schema");
File[] files = dir.listFiles((dir1, name) -> name.startsWith(SCHEMA_NAME_PREFIX) && name.endsWith(SCHEMA_NAME_SUFFIX));
if (ArrayUtils.isEmpty(files)) {
errLogger.log(LogLevel.ERROR, this.getClass().getName(), "Error – Failed to find VES Schema definitions.");
} else {
for (File f : files) {
debugLogger.log(LogLevel.DEBUG, this.getClass().getName(), "Loading VES schema file: {}", f.getName());
parseJsonFileAndSaveToMap(f);
}
}
}
private void parseJsonFileAndSaveToMap(File file) {
try {
EventListenerDefinition eventListener = gson.fromJson(new FileReader(file), EventListenerDefinition.class);
debugLogger.log(LogLevel.DEBUG, this.getClass().getName(), gson.toJson(eventListener));
String validationError = getValidatorMessage(eventListener);
if (StringUtils.isEmpty(validationError)) {
eventListeners.put(getVersionFromFileName(file.getName()), eventListener);
} else {
errLogger.log(LogLevel.ERROR, this.getClass().getName(), "Error: Failed to parse VES schema file {}. [{}]", file.getName(), validationError);
}
} catch (FileNotFoundException | JsonIOException | JsonSyntaxException e) {
errLogger.log(LogLevel.ERROR, this.getClass().getName(), "Error: Failed to parse VES schema file {}. [{}]", file.getName(), e);
}
}
public static Map<String, VesDataTypeDefinition> getEventListenerDefinitionByVersion(String version) {
return eventListeners.get(version).getProperties().get(EventListenerDefinition.EVENT_ROOT).getProperties();
}
public static Set<String> getAvailableVersionsList() {
return eventListeners.keySet();
}
public static Map<String, Set<String>> getAvailableVersionsAndEventTypes() {
return eventListeners.entrySet().stream().collect(Collectors.toMap(Map.Entry::getKey, e -> getEventListenerDefinitionByVersion(e.getKey()).keySet()));
}
public static Set<String> getEventTypeListByVersion(String version) {
return getEventListenerDefinitionByVersion(version).keySet();
}
private String getValidatorMessage(EventListenerDefinition eventListenerDefinition) {
String validationError = eventListenerDefinition.validate();
if (StringUtils.isBlank(validationError)) {
validationError = eventListenerDefinition.resolveRefTypes();
}
return validationError;
}
private String getVersionFromFileName(String fileName) {
return fileName.replace(SCHEMA_NAME_PREFIX, "").replace(SCHEMA_NAME_SUFFIX, "");
}
@PreDestroy
public void preDestroy() {
// why is this method empty?
}
}
|
