2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017-2019 AT&T Intellectual Property. All rights reserved.
6 * Modifications Copyright (C) 2019 Nordix Foundation.
7 * Modifications Copyright (C) 2019 Samsung Electronics Co., Ltd.
8 * ================================================================================
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 * ============LICENSE_END=========================================================
23 package org.onap.policy.aai;
25 import java.io.UnsupportedEncodingException;
26 import java.net.URLEncoder;
27 import java.nio.charset.StandardCharsets;
28 import java.util.HashMap;
30 import java.util.UUID;
31 import java.util.stream.Collectors;
33 import org.json.JSONArray;
34 import org.json.JSONObject;
35 import org.onap.policy.common.endpoints.event.comm.Topic.CommInfrastructure;
36 import org.onap.policy.common.endpoints.utils.NetLoggerUtil;
37 import org.onap.policy.common.endpoints.utils.NetLoggerUtil.EventType;
38 import org.onap.policy.common.utils.coder.CoderException;
39 import org.onap.policy.common.utils.coder.StandardCoder;
40 import org.onap.policy.rest.RestManager;
41 import org.onap.policy.rest.RestManager.Pair;
42 import org.slf4j.Logger;
43 import org.slf4j.LoggerFactory;
46 * This class handles communication towards and responses from A&AI for this module.
48 public final class AaiManager {
50 /** The Constant logger. */
51 private static final Logger logger = LoggerFactory.getLogger(AaiManager.class);
53 private static final String APPLICATION_JSON = "application/json";
55 private static final StandardCoder CODER = new StandardCoder();
57 // The REST manager used for processing REST calls for this AAI manager
58 private final RestManager restManager;
60 /** custom query and other AAI resource URLs. */
61 private static final String CQ_URL = "/aai/v16/query?format=resource";
62 private static final String TENANT_URL = "/aai/v16/search/nodes-query?"
63 + "search-node-type=vserver&filter=vserver-name:EQUALS:";
64 private static final String PREFIX = "/aai/v16";
65 private static final String PNF_URL = PREFIX + "/network/pnfs/pnf/";
66 private static final String AAI_DEPTH_SUFFIX = "?depth=0";
69 * Constructor, create the AAI manager with the specified REST manager.
71 * @param restManager the rest manager to use for REST calls
73 public AaiManager(final RestManager restManager) {
74 this.restManager = restManager;
78 * Creates the custom query payload from a tenant query response.
80 * @param getResponse response from the tenant query
81 * @return String Payload
83 private String createCustomQueryPayload(String getResponse) {
85 if (getResponse == null) {
88 JSONObject responseObj = new JSONObject(getResponse);
89 JSONArray resultsArray;
90 if (responseObj.has("result-data")) {
91 resultsArray = (JSONArray) responseObj.get("result-data");
95 String resourceLink = resultsArray.getJSONObject(0).getString("resource-link");
96 String start = resourceLink.replace(PREFIX, "");
97 String query = "query/closed-loop";
98 JSONObject payload = new JSONObject();
99 payload.put("start", start);
100 payload.put("query", query);
101 return payload.toString();
107 * This method is used to get the information for custom query.
109 * @param url url of the get method
110 * @param username Aai username
111 * @param password Aai password
112 * @param requestId request ID
113 * @param vserver Id of the vserver
116 private String getCustomQueryRequestPayload(String url, String username, String password, UUID requestId,
119 String urlGet = url + TENANT_URL;
121 String getResponse = getStringQuery(urlGet, username, password, requestId, vserver);
122 return createCustomQueryPayload(getResponse);
126 * Calls Aai and returns a custom query response for a vserver.
129 * @param username Aai Username
130 * @param password Aai Password
131 * @param requestId request ID
132 * @param vserver Vserver
133 * @return AaiCqResponse response from Aai for custom query
135 public AaiCqResponse getCustomQueryResponse(String url, String username, String password, UUID requestId,
138 final Map<String, String> headers = createHeaders(requestId);
140 logger.debug("RestManager.put before");
141 String requestJson = getCustomQueryRequestPayload(url, username, password, requestId, vserver);
142 NetLoggerUtil.log(EventType.OUT, CommInfrastructure.REST, url, requestJson);
146 Pair<Integer, String> httpDetails = this.restManager.put(url, username, password, headers, APPLICATION_JSON,
148 logger.debug("RestManager.put after");
150 if (httpDetails == null) {
151 logger.info("AAI POST Null Response to {}", url);
155 int httpResponseCode = httpDetails.first;
158 logger.info("{}", httpResponseCode);
159 logger.info(httpDetails.second);
161 if (httpDetails.second != null) {
162 String resp = httpDetails.second;
163 return new AaiCqResponse(resp);
169 * Returns the string response of a get query.
172 * @param username Aai Username
173 * @param password Aai Password
174 * @param requestId AaiRequestId
176 * @return String returns the string from the get query
178 private String getStringQuery(final String url, final String username, final String password, final UUID requestId,
181 Map<String, String> headers = createHeaders(requestId);
183 String urlGet = url + key;
185 int attemptsLeft = 3;
187 while (attemptsLeft-- > 0) {
188 NetLoggerUtil.getNetworkLogger().info("[OUT|{}|{}|]", CommInfrastructure.REST, urlGet);
189 Pair<Integer, String> httpDetailsGet = restManager.get(urlGet, username, password, headers);
190 if (httpDetailsGet == null) {
191 logger.info("AAI GET Null Response to {}", urlGet);
195 int httpResponseCode = httpDetailsGet.first;
198 logger.info("{}", httpResponseCode);
199 logger.info(httpDetailsGet.second);
201 if (httpResponseCode == 200) {
202 String responseGet = httpDetailsGet.second;
203 if (responseGet != null) {
209 } catch (InterruptedException e) {
210 Thread.currentThread().interrupt();
219 * Create the headers for the HTTP request.
221 * @param requestId the request ID to insert in the headers
222 * @return the HTTP headers
224 private Map<String, String> createHeaders(final UUID requestId) {
225 Map<String, String> headers = new HashMap<>();
227 headers.put("X-FromAppId", "POLICY");
228 headers.put("X-TransactionId", requestId.toString());
229 headers.put("Accept", APPLICATION_JSON);
235 * Perform a GET request for a particular PNF by PNF ID towards A&AI.
237 * @param url the A&AI URL
238 * @param username the user name for authentication
239 * @param password the password for authentication
240 * @param requestId the UUID of the request
241 * @param pnfName the AAI unique identifier for PNF object
242 * @return HashMap of PNF properties
244 public Map<String, String> getPnf(String url, String username, String password, UUID requestId, String pnfName) {
247 urlGet = url + PNF_URL;
248 pnfName = URLEncoder.encode(pnfName, StandardCharsets.UTF_8.toString()) + AAI_DEPTH_SUFFIX;
249 } catch (UnsupportedEncodingException e) {
250 logger.error("Failed to encode the pnfName: {} using UTF-8 encoding. {}", pnfName, e);
253 String responseGet = getStringQuery(urlGet, username, password, requestId, pnfName);
254 if (responseGet == null) {
255 logger.error("Null response from AAI for the url: {}.", urlGet);
259 @SuppressWarnings("unchecked")
260 Map<String, String> pnfParams = CODER.decode(responseGet, HashMap.class);
261 // Map to AAI node.attribute notation
262 return pnfParams.entrySet().stream()
263 .collect(Collectors.toMap(e -> "pnf." + e.getKey(), Map.Entry::getValue));
264 } catch (CoderException e) {
265 logger.error("Failed to fetch PNF from AAI", e);