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/*-
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2021 Wipro Limited.
* ================================================================================
* 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.cps.tbdmt.client;
import java.util.Arrays;
import java.util.Map;
import org.onap.cps.tbdmt.exception.CpsClientException;
import org.onap.cps.tbdmt.model.AppConfiguration;
import org.onap.cps.tbdmt.model.CpsConfiguration;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.stereotype.Component;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.util.UriComponentsBuilder;
@Component
public class CpsRestClient {
private static final String NODES_API_PATH = "/anchors/{anchor}/node";
private static final String QUERY_API_PATH = "/anchors/{anchor}/nodes/query";
private static final String POST_API_PATH = "/anchors/{anchor}/nodes";
@Autowired
private RestTemplate restTemplate;
@Autowired
private AppConfiguration appConfiguration;
/**
* Fetch node from the CPS using xpath.
*
* @param anchor anchor
* @param xpath xpath query
* @return result Response string from CPS
*/
public String fetchNode(final String anchor, final String xpath,
final String requestType, final Boolean includeDescendants) throws CpsClientException {
final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<>();
queryParams.add("xpath", xpath);
queryParams.add("include-descendants", includeDescendants.toString());
final CpsConfiguration cpsConfiguration = "cpsCore".equals(appConfiguration.getCpsClient())
? appConfiguration.getCpsCoreConfiguration() : appConfiguration.getNcmpConfiguration();
final String path = "query".equals(requestType) ? QUERY_API_PATH : NODES_API_PATH;
final String uri = buildCpsUrl(cpsConfiguration.getUrl(), path, anchor, queryParams);
final HttpHeaders headers = new HttpHeaders();
headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
headers.setBasicAuth(cpsConfiguration.getUsername(), cpsConfiguration.getPassword());
final HttpEntity<String> entity = new HttpEntity<>(headers);
ResponseEntity<String> responseEntity = null;
try {
responseEntity = restTemplate.exchange(uri, HttpMethod.GET, entity, String.class);
} catch (final Exception e) {
throw new CpsClientException(e.getLocalizedMessage());
}
final int statusCode = responseEntity.getStatusCodeValue();
if (statusCode == 200) {
return responseEntity.getBody();
} else {
throw new CpsClientException(
String.format("Response code from CPS other than 200: %d", statusCode));
}
}
/**
* Post data to CPS using xpath.
*
* @param anchor anchor
* @param xpath xpath query
* @param requestType http request type
* @param payload request body
* @return result Response string from CPS
*/
public String addData(final String anchor, final String xpath, final String requestType,
final Map<String, Object> payload) throws CpsClientException {
final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<>();
queryParams.add("xpath", xpath);
final CpsConfiguration cpsConfiguration = "cpsCore".equals(appConfiguration.getCpsClient())
? appConfiguration.getCpsCoreConfiguration() : appConfiguration.getNcmpConfiguration();
final HttpHeaders headers = new HttpHeaders();
headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
headers.setContentType(MediaType.APPLICATION_JSON);
headers.setBasicAuth(cpsConfiguration.getUsername(), cpsConfiguration.getPassword());
final HttpEntity<String> entity = new HttpEntity<>(new com.google.gson.Gson().toJson(payload), headers);
String uri = buildCpsUrl(cpsConfiguration.getUrl(), POST_API_PATH, anchor, queryParams);
try {
if (requestType.equalsIgnoreCase("post")) {
uri = buildCpsUrl(cpsConfiguration.getUrl(), POST_API_PATH, anchor, new LinkedMultiValueMap<>());
return restTemplate.postForEntity(uri, entity, String.class).getBody();
} else if (requestType.equalsIgnoreCase("patch")) {
final HttpComponentsClientHttpRequestFactory requestFactory
= new HttpComponentsClientHttpRequestFactory();
requestFactory.setConnectTimeout(10000);
requestFactory.setReadTimeout(10000);
restTemplate.setRequestFactory(requestFactory);
return restTemplate.patchForObject(uri, entity, String.class);
} else {
return restTemplate.exchange(uri, HttpMethod.PUT, entity, String.class).getBody();
}
} catch (final Exception e) {
throw new CpsClientException(e.getLocalizedMessage());
}
}
private String buildCpsUrl(final String baseUrl, final String path, final String anchor,
final MultiValueMap<String, String> queryParams) {
return UriComponentsBuilder
.fromHttpUrl(baseUrl)
.path(path)
.queryParams(queryParams)
.buildAndExpand(anchor)
.toUriString();
}
}
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