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
|
/*-
* ============LICENSE_START=======================================================
* PNF-REGISTRATION-HANDLER
* ================================================================================
* Copyright (C) 2018 NOKIA 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.dcaegen2.services.service;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpEntity;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPatch;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.util.EntityUtils;
import org.onap.dcaegen2.services.config.AAIHttpClientConfiguration;
import org.onap.dcaegen2.services.utils.HttpRequestDetails;
import org.onap.dcaegen2.services.utils.HttpUtils;
import org.onap.dcaegen2.services.utils.RequestVerbs;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import javax.annotation.Nonnull;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Iterator;
import java.util.Map;
import java.util.Optional;
public class AAIExtendedHttpClientImpl implements AAIExtendedHttpClient {
Logger logger = LoggerFactory.getLogger(AAIExtendedHttpClientImpl.class);
private final CloseableHttpClient closeableHttpClient;
private final String aaiHost;
private final String aaiProtocol;
private final Integer aaiHostPortNumber;
@Autowired
public AAIExtendedHttpClientImpl (AAIHttpClientConfiguration aaiHttpClientConfiguration) {
final AAIHttpClient aaiHttpClient = new AAIHttpClientImpl(aaiHttpClientConfiguration);
closeableHttpClient = aaiHttpClient.getAAIHttpClient();
aaiHost = aaiHttpClientConfiguration.aaiHost();
aaiProtocol = aaiHttpClientConfiguration.aaiProtocol();
aaiHostPortNumber = aaiHttpClientConfiguration.aaiHostPortNumber();
}
@Override
public Optional<String> getHttpResponse(HttpRequestDetails httpRequestDetails) {
Optional<String> extendedDetails = Optional.empty();
final URI extendedURI = createAAIExtendedURI(httpRequestDetails.aaiAPIPath(),
httpRequestDetails.queryParameters());
final HttpRequestBase request = createHttpRequest(extendedURI, httpRequestDetails);
if (request == null) {
return Optional.empty();
}
for (Map.Entry<String, String> headersEntry : httpRequestDetails.headers().entrySet()) {
request.addHeader(headersEntry.getKey(), headersEntry.getValue());
}
try {
extendedDetails = closeableHttpClient.execute(request, aaiResponseHandler());
} catch (IOException e) {
logger.error("Exception while executing HTTP request: {}", e);
}
if (extendedDetails.isPresent()) {
return extendedDetails;
} else {
return Optional.empty();
}
}
private URI createAAIExtendedURI(final String path, Map<String, String> queryParams) {
URI extendedURI = null;
final URIBuilder uriBuilder = new URIBuilder().setScheme(this.aaiProtocol).setHost(this.aaiHost)
.setPort(this.aaiHostPortNumber)
.setPath(path);
final String customQuery = createCustomQuery(queryParams);
if (StringUtils.isNoneBlank(customQuery)) {
uriBuilder.setCustomQuery(customQuery);
}
try {
logger.info("Building extended URI");
extendedURI = uriBuilder.build();
} catch (URISyntaxException e) {
logger.error("Exception while building extended URI: {}", e);
}
return extendedURI;
}
private String createCustomQuery(@Nonnull final Map<String, String> queryParams) {
final StringBuilder queryStringBuilder = new StringBuilder("");
final Iterator<Map.Entry<String, String>> queryParamIterator = queryParams.entrySet().iterator();
while (queryParamIterator.hasNext()) {
final Map.Entry<String, String> queryParamsEntry = queryParamIterator.next();
queryStringBuilder.append(queryParamsEntry.getKey()).append("=").append(queryParamsEntry.getValue());
if (queryParamIterator.hasNext()) {
queryStringBuilder.append("&");
}
}
return queryStringBuilder.toString();
}
private ResponseHandler<Optional<String>> aaiResponseHandler() {
return httpResponse -> {
final int responseCode = httpResponse.getStatusLine().getStatusCode();
final HttpEntity responseEntity = httpResponse.getEntity();
if (HttpUtils.isSuccessfulResponseCode(responseCode) && responseEntity != null) {
logger.info("HTTP response successful.");
final String aaiResponse = EntityUtils.toString(responseEntity);
return Optional.of(aaiResponse);
} else {
String aaiResponse = responseEntity != null ? EntityUtils.toString(responseEntity) : "";
logger.error("HTTP response not successful : {}", aaiResponse);
return Optional.empty();
}
};
}
private HttpRequestBase createHttpRequest(URI extendedURI, HttpRequestDetails httpRequestDetails) {
if (isExtendedURINotNull(extendedURI) && (httpRequestDetails.requestVerb().equals(RequestVerbs.GET))) {
return new HttpGet(extendedURI);
} else if (isExtendedURINotNull(extendedURI) && (httpRequestDetails.requestVerb().equals(RequestVerbs.PUT))) {
return new HttpPut(extendedURI);
} else if (isExtendedURINotNull(extendedURI) &&
isPatchRequestValid(httpRequestDetails.requestVerb(),httpRequestDetails.jsonBody())) {
return createHttpPatch(extendedURI, httpRequestDetails.jsonBody());
} else {
return null;
}
}
private Boolean isExtendedURINotNull(URI extendedURI) {
return extendedURI != null ? true : false;
}
private Optional<StringEntity> createStringEntity(Optional<String> jsonBody) {
return Optional.of(parseJson(jsonBody).get());
}
private HttpPatch createHttpPatch(URI extendedURI, Optional<String> jsonBody) {
HttpPatch httpPatch = new HttpPatch(extendedURI);
Optional<StringEntity> stringEntity = createStringEntity(jsonBody);
httpPatch.setEntity(stringEntity.get());
return httpPatch;
}
private Optional<StringEntity> parseJson(Optional<String> jsonBody) {
Optional<StringEntity> stringEntity = Optional.empty();
try {
stringEntity = Optional.of(new StringEntity(jsonBody.get()));
} catch (UnsupportedEncodingException e) {
logger.error("Exception while parsing JSON: {}", e);
}
return stringEntity;
}
private Boolean isPatchRequestValid(RequestVerbs requestVerb, Optional<String> jsonBody) {
return requestVerb == RequestVerbs.PATCH && jsonBody.isPresent();
}
}
|
