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/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2017 Amdocs
* =============================================================================
* 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.
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
* ============LICENSE_END=========================================================
*/
package org.onap.appc.adapter.rest.impl;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
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.RestAdapter;
import org.onap.appc.adapter.rest.RequestFactory;
import org.onap.appc.configuration.Configuration;
import org.onap.appc.configuration.ConfigurationFactory;
import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
import java.util.Iterator;
import java.util.Map;
import java.util.function.Supplier;
/**
* 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);
}
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);
}
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);
}
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);
}
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) {
status = "500";
}
svcLogic.setStatus(OUTCOME_FAILURE);
svcLogic.setAttribute(Constants.ATTRIBUTE_ERROR_CODE, status);
svcLogic.setAttribute(Constants.ATTRIBUTE_ERROR_MESSAGE, msg);
svcLogic.setAttribute("org.openecomp.rest.result.code", status);
svcLogic.setAttribute("org.openecomp.rest.result.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("org.openecomp.rest.agent.result.code",Integer.toString(code));
svcLogic.setAttribute("org.openecomp.rest.agent.result.message",message);
svcLogic.setAttribute("org.openecomp.rest.result.code",Integer.toString(HttpStatus.OK_200.getStatusCode()));
}
public 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 ex) {
doFailure(rc, HttpStatus.INTERNAL_SERVER_ERROR_500, ex.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 (haveHeader.equals("true")) {
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 (method.equals("PUT")){
HttpPut httpPut = (HttpPut) httpRequest;
httpPut.setEntity(bodyParams);
}
if (method.equals("POST")){
HttpPost httpPost = (HttpPost) httpRequest;
httpPost.setEntity(bodyParams);
}
}
} catch (Exception ex) {
doFailure(rc, HttpStatus.INTERNAL_SERVER_ERROR_500, ex.toString());
}
return httpRequest;
}
/**
* initialize the provider adapter by building the context cache
*/
private void initialize() {
configuration = ConfigurationFactory.getConfiguration();
logger.info("init rest adapter!!!!!");
}
}
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