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
234
235
236
237
238
239
240
241
242
243
244
245
|
/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2017 Amdocs
* =============================================================================
* Modifications Copyright (C) 2018 Samsung
* ================================================================================
* 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.appc.adapter.rest.impl;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import java.util.Iterator;
import java.util.Map;
import java.util.function.Supplier;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpDelete;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.glassfish.grizzly.http.util.HttpStatus;
import org.json.JSONObject;
import org.onap.appc.Constants;
import org.onap.appc.adapter.rest.RequestFactory;
import org.onap.appc.adapter.rest.RestAdapter;
import org.onap.appc.configuration.Configuration;
import org.onap.appc.configuration.ConfigurationFactory;
import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
/**
* This class implements the {@link RestAdapter} interface. This interface defines the behaviors that our service
* provides.
*/
public class RestAdapterImpl implements RestAdapter {
/**
* The constant for the status code for a failed outcome
*/
@SuppressWarnings("nls")
private static final String OUTCOME_FAILURE = "failure";
/**
* The constant for the status code for a successful outcome
*/
@SuppressWarnings("nls")
private static final String OUTCOME_SUCCESS = "success";
/**
* The logger to be used
*/
private final EELFLogger logger = EELFManager.getInstance().getLogger(RestAdapterImpl.class);
/**
* A reference to the adapter configuration object.
*/
private Configuration configuration;
/**
* This default constructor is used as a work around because the activator wasnt getting called
*/
public RestAdapterImpl() {
initialize();
}
/**
* Returns the symbolic name of the adapter
*
* @return The adapter name
* @see org.onap.appc.adapter.rest.RestAdapter#getAdapterName()
*/
@Override
public String getAdapterName() {
return configuration.getProperty(Constants.PROPERTY_ADAPTER_NAME);
}
@Override
public void commonGet(Map<String, String> params, SvcLogicContext ctx) {
logger.info("Run get method");
RequestContext rc = new RequestContext(ctx);
rc.isAlive();
HttpGet httpGet = (HttpGet) createHttpRequest("GET", params, rc);
executeHttpRequest(httpGet, rc);
}
@Override
public void commonDelete(Map<String, String> params, SvcLogicContext ctx) {
logger.info("Run Delete method");
RequestContext rc = new RequestContext(ctx);
rc.isAlive();
HttpDelete httpDelete = (HttpDelete) createHttpRequest("DELETE", params, rc);
executeHttpRequest(httpDelete, rc);
}
@Override
public void commonPost(Map<String, String> params, SvcLogicContext ctx) {
logger.info("Run post method");
RequestContext rc = new RequestContext(ctx);
rc.isAlive();
HttpPost httpPost = (HttpPost) createHttpRequest("POST", params, rc);
executeHttpRequest(httpPost, rc);
}
@Override
public void commonPut(Map<String, String> params, SvcLogicContext ctx) {
logger.info("Run put method");
RequestContext rc = new RequestContext(ctx);
rc.isAlive();
HttpPut httpPut = (HttpPut) createHttpRequest("PUT", params, rc);
executeHttpRequest(httpPut, rc);
}
@SuppressWarnings("static-method")
private void doFailure(RequestContext rc, HttpStatus code, String message) {
SvcLogicContext svcLogic = rc.getSvcLogicContext();
String msg = (message == null) ? code.getReasonPhrase() : message;
if (msg.contains("\n")) {
msg = msg.substring(msg.indexOf('\n'));
}
String status;
try {
status = Integer.toString(code.getStatusCode());
} catch (Exception e) {
logger.error("Exception occurred", e);
status = "500";
}
svcLogic.setStatus(OUTCOME_FAILURE);
svcLogic.setAttribute(Constants.ATTRIBUTE_ERROR_CODE, status);
svcLogic.setAttribute(Constants.ATTRIBUTE_ERROR_MESSAGE, msg);
svcLogic.setAttribute(Constants.CONTEXT_ERROR_CODE, status);
svcLogic.setAttribute(Constants.CONTEXT_ERROR_MESSAGE, msg);
}
/**
* @param rc The request context that manages the state and recovery of the request for the life of its processing.
*/
@SuppressWarnings("static-method")
private void doSuccess(RequestContext rc, int code, String message) {
SvcLogicContext svcLogic = rc.getSvcLogicContext();
svcLogic.setStatus(OUTCOME_SUCCESS);
svcLogic.setAttribute(Constants.ATTRIBUTE_ERROR_CODE, Integer.toString(HttpStatus.OK_200.getStatusCode()));
svcLogic.setAttribute(Constants.ATTRIBUTE_ERROR_MESSAGE, message);
svcLogic.setAttribute(Constants.CONTEXT_AGENT_ERROR_CODE, Integer.toString(code));
svcLogic.setAttribute(Constants.CONTEXT_AGENT_ERROR_MESSAGE, message);
svcLogic.setAttribute(Constants.CONTEXT_ERROR_CODE, Integer.toString(HttpStatus.OK_200.getStatusCode()));
}
private void executeHttpRequest(HttpRequestBase httpRequest, RequestContext rc) {
try (CloseableHttpClient httpClient = HttpClients.createDefault()) {
HttpResponse response = httpClient.execute(httpRequest);
int responseCode = response.getStatusLine().getStatusCode();
HttpEntity entity = response.getEntity();
String responseOutput = EntityUtils.toString(entity);
if (responseCode == 200) {
doSuccess(rc, responseCode, responseOutput);
} else {
doFailure(rc, HttpStatus.getHttpStatus(responseCode), response.getStatusLine().getReasonPhrase());
}
} catch (Exception e) {
logger.error("An error occurred when executing http request", e);
doFailure(rc, HttpStatus.INTERNAL_SERVER_ERROR_500, e.toString());
}
}
public HttpRequestBase createHttpRequest(String method, Map<String, String> params, RequestContext rc) {
HttpRequestBase httpRequest = null;
try {
String tUrl = params.get("org.onap.appc.instance.URI");
String haveHeader = params.get("org.onap.appc.instance.haveHeader");
String headers = params.get("org.onap.appc.instance.headers");
Supplier<RequestFactory> requestFactory = RequestFactory::new;
httpRequest = requestFactory.get().getHttpRequest(method, tUrl);
if ("true".equals(haveHeader)) {
JSONObject jsonHeaders = new JSONObject(headers);
Iterator keys = jsonHeaders.keys();
while (keys.hasNext()) {
String string1 = (String) keys.next();
String string2 = jsonHeaders.getString(string1);
httpRequest.addHeader(string1, string2);
}
}
if (params.containsKey("org.onap.appc.instance.requestBody")) {
String body = params.get("org.onap.appc.instance.requestBody");
StringEntity bodyParams = new StringEntity(body, "UTF-8");
if ("PUT".equals(method)) {
HttpPut httpPut = (HttpPut) httpRequest;
httpPut.setEntity(bodyParams);
}
if ("POST".equals(method)) {
HttpPost httpPost = (HttpPost) httpRequest;
httpPost.setEntity(bodyParams);
}
}
} catch (Exception e) {
logger.error("An error occurred when creating http request", e);
doFailure(rc, HttpStatus.INTERNAL_SERVER_ERROR_500, e.toString());
}
return httpRequest;
}
/**
* initialize the provider adapter by building the context cache
*/
private void initialize() {
configuration = ConfigurationFactory.getConfiguration();
logger.info("Rest adapter has been initialized");
}
}
|
