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/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017-2018 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 org.onap.appc.flow.controller.executorImpl;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.api.client.ClientResponse.Status;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.api.client.config.DefaultClientConfig;
import com.sun.jersey.api.client.filter.HTTPBasicAuthFilter;
import com.sun.jersey.client.urlconnection.HTTPSProperties;
import java.net.URI;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLContext;
import javax.ws.rs.HttpMethod;
import javax.ws.rs.core.MediaType;
import org.apache.commons.lang3.StringUtils;
import org.onap.appc.flow.controller.data.Response;
import org.onap.appc.flow.controller.data.Transaction;
import org.onap.appc.flow.controller.interfaces.FlowExecutorInterface;
import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
public class RestExecutor implements FlowExecutorInterface {
private static final EELFLogger log = EELFManager.getInstance().getLogger(RestExecutor.class);
@Override
public Map<String, String> execute(Transaction transaction, SvcLogicContext ctx) throws Exception {
log.info("Configuring Rest Operation....." + transaction.toString());
Map<String, String> outputMessage = new HashMap<>();
Client client = null;
try {
System.setProperty("jsse.enableSNIExtension", "false");
SSLContext sslContext = SSLContext.getInstance("SSL");
sslContext.init(null, new javax.net.ssl.TrustManager[] {new SecureRestClientTrustManager()}, null);
DefaultClientConfig defaultClientConfig = new DefaultClientConfig();
defaultClientConfig.getProperties().put(HTTPSProperties.PROPERTY_HTTPS_PROPERTIES,
new HTTPSProperties(getHostnameVerifier(), sslContext));
client = createClient(defaultClientConfig);
if ((transaction.getuId() != null) && (transaction.getPswd() != null)) {
client.addFilter(new HTTPBasicAuthFilter(transaction.getuId(), transaction.getPswd()));
}
WebResource webResource = client.resource(new URI(transaction.getExecutionEndPoint()));
webResource.setProperty("Content-Type", "application/json;charset=UTF-8");
ClientResponse clientResponse = getClientResponse(transaction, webResource).orElseThrow(() -> new Exception(
"Cannot determine the state of : " + transaction.getActionLevel() + " HTTP response is null"));
processClientResponse(clientResponse, transaction, outputMessage);
log.info("Completed Rest Operation.....");
} catch (Exception e) {
log.debug("failed in RESTCONT Action (" + transaction.getExecutionRPC() + ") for the resource "
+ transaction.getExecutionEndPoint() + ", fault message :" + e.getMessage());
throw new Exception("Error While Sending Rest Request", e);
} finally {
if (client != null) {
client.destroy();
}
}
return outputMessage;
}
private HostnameVerifier getHostnameVerifier() {
return (hostname, sslSession) -> true;
}
Client createClient(DefaultClientConfig defaultClientConfig) {
return Client.create(defaultClientConfig);
}
private Optional<ClientResponse> getClientResponse(Transaction transaction, WebResource webResource) {
String responseDataType = MediaType.APPLICATION_JSON;
String requestDataType = MediaType.APPLICATION_JSON;
ClientResponse clientResponse = null;
log.info("Starting Rest Operation.....");
if (HttpMethod.GET.equalsIgnoreCase(transaction.getExecutionRPC())) {
clientResponse = webResource.accept(responseDataType).get(ClientResponse.class);
} else if (HttpMethod.POST.equalsIgnoreCase(transaction.getExecutionRPC())) {
clientResponse = webResource.type(requestDataType).post(ClientResponse.class, transaction.getPayload());
} else if (HttpMethod.PUT.equalsIgnoreCase(transaction.getExecutionRPC())) {
clientResponse = webResource.type(requestDataType).put(ClientResponse.class, transaction.getPayload());
} else if (HttpMethod.DELETE.equalsIgnoreCase(transaction.getExecutionRPC())) {
clientResponse = webResource.delete(ClientResponse.class);
}
return Optional.ofNullable(clientResponse);
}
private void processClientResponse(ClientResponse clientResponse, Transaction transaction,
Map<String, String> outputMessage) throws Exception {
if (clientResponse.getStatus() == Status.OK.getStatusCode()) {
Response response = new Response();
response.setResponseCode(String.valueOf(Status.OK.getStatusCode()));
transaction.setResponses(Collections.singletonList(response));
outputMessage.put("restResponse", clientResponse.getEntity(String.class));
} else {
String errorMsg = clientResponse.getEntity(String.class);
if (StringUtils.isNotBlank(errorMsg)) {
log.debug("Error Message from Client Response" + errorMsg);
}
throw new Exception("Cannot determine the state of : " + transaction.getActionLevel()
+ " HTTP error code : " + clientResponse.getStatus());
}
}
}
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