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/*-
* ============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 utilities;
import json.Credential;
import json.Environment;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.TrustSelfSignedStrategy;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicHeader;
import org.apache.http.ssl.SSLContextBuilder;
import org.onap.sdc.dcae.composition.restmodels.CreateVFCMTRequest;
import org.onap.sdc.dcae.composition.restmodels.canvas.DcaeComponentCatalog;
import org.onap.sdc.dcae.composition.restmodels.sdc.Resource;
import org.onap.sdc.dcae.composition.restmodels.sdc.ResourceDetailed;
import org.springframework.http.*;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.stereotype.Component;
import org.springframework.web.client.RestTemplate;
import tools.LoggerDebug;
import javax.annotation.PostConstruct;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
import java.util.stream.Stream;
@Component("dcaerestclient")
public class DcaeRestClient implements IDcaeRestClient {
private static LoggerDebug debugLogger = LoggerDebug.getInstance();
private static final String GET_RESOURCES_BY_CATEGORY = "/getResourcesByCategory";
private static final String CREATE_VFCMT = "/createVFCMT";
private static final String CATALOG = "/catalog";
private static final String ECOMP_INSTANCE_ID_HEADER = "X-ECOMP-InstanceID";
private static final String USER_ID_HEADER = "USER_ID";
private String uri;
private RestTemplate client;
private Credential credential;
public DcaeRestClient(Credential credential) {
this.credential = credential;
}
@Override
public String getUserId() {
return credential.getUsername();
}
@PostConstruct
@Override
public void init(Environment environment) {
credential = environment.getCredential();
debugLogger.log("Connecting to server host: " + environment.getDcaeBeHost() + ", port: " + environment.getDcaeBePort());
try {
HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory();
requestFactory.setHttpClient(buildRestClient());
client = new RestTemplate(requestFactory);
} catch (SSLException e) {
debugLogger.log("ERROR: Build rest client failed because: " + e.getMessage());
}
uri = String.format("%s:%s%s", environment.getDcaeBeHost(), environment.getDcaeBePort(), environment.getApiPath());
debugLogger.log("end function");
}
private List<BasicHeader> defaultHeaders(Credential credential) {
List<BasicHeader> headers = new ArrayList<>();
headers.add(new BasicHeader(HttpHeaders.ACCEPT, MediaType.APPLICATION_JSON_VALUE));
headers.add(new BasicHeader(HttpHeaders.ACCEPT, MediaType.APPLICATION_OCTET_STREAM_VALUE));
headers.add(new BasicHeader(ECOMP_INSTANCE_ID_HEADER, credential.getUsername()));
return headers;
}
@Override
public List<ResourceDetailed> getAllVfcmts() {
String url = buildRequestPath(GET_RESOURCES_BY_CATEGORY);
return Arrays.asList(client.getForObject(url, ResourceDetailed[].class));
}
@Override
public List<ResourceDetailed> getAllBaseVfcmts() {
String url = buildRequestPath("/getResourcesByMonitoringTemplateCategory");
return Arrays.asList(client.getForObject(url, ResourceDetailed[].class));
}
@Override
public ResourceDetailed createResource(CreateVFCMTRequest resource) {
String url = buildRequestPath(CREATE_VFCMT);
return client.postForObject(url, new HttpEntity<>(resource, postResourceHeaders(credential.getUsername())), ResourceDetailed.class);
}
@Override
public ResourceDetailed checkoutVfcmt(String vfcmtUuid) {
String url = buildRequestPath(String.format("/checkout/vfcmt/%s", vfcmtUuid));
ResponseEntity<ResourceDetailed> resourceDetailedResponse = client.exchange(url, HttpMethod.PUT, new HttpEntity(postResourceHeaders(credential.getUsername())), ResourceDetailed.class);
return resourceDetailedResponse.getBody();
}
@Override
public ResourceDetailed checkinVfcmt(String vfcmtUuid) {
String url = buildRequestPath(String.format("/checkin/vfcmt/%s", vfcmtUuid));
ResponseEntity<ResourceDetailed> resourceDetailedResponse = client.exchange(url, HttpMethod.PUT, new HttpEntity(postResourceHeaders(credential.getUsername())), ResourceDetailed.class);
return resourceDetailedResponse.getBody();
}
@Override
public Map<String, List<Resource>> getDcaeCatalog() {
String url = buildRequestPath(CATALOG);
DcaeComponentCatalog catalog = client.getForObject(url, DcaeComponentCatalog.class);
return catalog.getElements().stream().collect(Collectors.toMap(DcaeComponentCatalog.SubCategoryFolder::getName, DcaeComponentCatalog.SubCategoryFolder::getItems));
}
@Override
public String getItemModel(String elementId) {
String url = buildRequestPath("/"+ elementId +"/model");
return client.getForObject(url, String.class);
}
@Override
public String getItemType(String elementId, String type) {
String url = buildRequestPath("/"+ elementId +"/type/"+ type +"/");
return client.getForObject(url, String.class);
}
@Override
public String saveComposition(String componentId, String body) {
String url = buildRequestPath("/saveComposition/" + componentId);
ResponseEntity<String> resourceDetailedResponse = client.exchange(url, HttpMethod.POST, new HttpEntity<>(body, postResourceHeaders(credential.getUsername())), String.class);
return resourceDetailedResponse.getBody();
}
@Override
public String certifyVfcmt(String vfcmtUuid) {
String url = buildRequestPath(String.format("/certify/vfcmt/%s", vfcmtUuid));
ResponseEntity<String> resourceDetailedResponse = client.exchange(url, HttpMethod.PUT, new HttpEntity(postResourceHeaders(credential.getUsername())), String.class);
return resourceDetailedResponse.getBody();
}
private HttpHeaders postResourceHeaders(String userId) {
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_JSON_UTF8);
headers.add(USER_ID_HEADER, userId);
return headers;
}
private String buildRequestPath(String... args){
String url = uri + String.join("", args);
debugLogger.log("Sending request: " + url);
return url;
}
@Override
public void updateResource(ResourceDetailed vfcmt) {
// Do nothing
}
private CloseableHttpClient buildRestClient() throws SSLException {
SSLContextBuilder builder = new SSLContextBuilder();
try {
builder.loadTrustMaterial(null, new TrustSelfSignedStrategy());
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
SSLContext.getDefault(), NoopHostnameVerifier.INSTANCE);
Registry<ConnectionSocketFactory> registry =
RegistryBuilder.<ConnectionSocketFactory>create()
.register("http", new PlainConnectionSocketFactory()).register("https", sslsf)
.build();
PoolingHttpClientConnectionManager cm =
new PoolingHttpClientConnectionManager(registry);
return HttpClients.custom().setSSLSocketFactory(sslsf).setConnectionManager(cm).build();
} catch (NoSuchAlgorithmException | KeyStoreException e) {
throw new SSLException(e);
}
}
}
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