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/**
* Copyright 2016-2017 ZTE Corporation.
*
* 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.
*/
package org.onap.workflow.activitiext.restservicetask;
import org.activiti.engine.ActivitiException;
import org.apache.commons.httpclient.HttpMethodBase;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.methods.DeleteMethod;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.PutMethod;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @author 10222158
*
*/
public class HighLevelRestApi {
private static final Logger logger = LoggerFactory.getLogger(HighLevelRestApi.class);
/**
* invoke http service
*
* @param methodValue
* @param uri
* @param requestPayload
* @param acceptValue
* @param contentTypeValue
* @return
*/
public static HttpResponseMessage invoke(String methodValue, String uri, String requestPayload, String acceptValue,
String contentTypeValue) throws Exception {
// complete uri
uri = completeUri(uri);
logger.info("uri: " + uri);
logger.info("method: " + methodValue);
logger.info("requestbody: " + requestPayload);
logger.info("accept: " + acceptValue);
logger.info("content-type: " + contentTypeValue);
HttpResponseMessage msg = new HttpResponseMessage();
switch (methodValue.toUpperCase()) {
case ConstString.HTTP_GET:
msg = HighLevelRestApi.Get(uri, acceptValue, contentTypeValue);
break;
case ConstString.HTTP_POST:
msg = HighLevelRestApi.Post(uri, requestPayload, acceptValue, contentTypeValue);
break;
case ConstString.HTTP_DELETE:
msg = HighLevelRestApi.Delete(uri, acceptValue, contentTypeValue);
break;
case ConstString.HTTP_PUT:
msg = HighLevelRestApi.Put(uri, requestPayload, acceptValue, contentTypeValue);
break;
default:
throw new ActivitiException("can not find the http method type '" + methodValue + "'!");
}
return msg;
}
/**
* This method implements the HTTP Put Method
*
* @param uri
* Resource URI
* @param requestPayload
* Content which has to be put into the Resource
* @return ResponseCode of HTTP Interaction
*/
@SuppressWarnings("deprecation")
public static HttpResponseMessage Put(String uri, String requestPayload, String acceptValue,
String contentTypeValue) {
PutMethod method = new PutMethod(uri);
HighLevelRestApi.setAcceptHeader(method, acceptValue);
HighLevelRestApi.setContentTypeHeader(method, contentTypeValue);
method.setRequestBody(requestPayload);
HttpResponseMessage responseMessage = LowLevelRestApi.executeHttpMethod(method);
return responseMessage;
}
/**
* This method implements the HTTP Post Method
*
* @param uri
* Resource URI
* @param requestPayload
* Content which has to be posted into the Resource
* @return ResponseCode of HTTP Interaction
*/
@SuppressWarnings("deprecation")
public static HttpResponseMessage Post(String uri, String requestPayload, String acceptValue,
String contentTypeValue) {
PostMethod method = null;
if (uri.contains("?")) {
String[] split = uri.split("\\?");
method = new PostMethod(split[0]);
method.setQueryString(HighLevelRestApi.createNameValuePairArrayFromQuery(split[1]));
} else {
method = new PostMethod(uri);
}
method.setRequestBody(requestPayload);
HighLevelRestApi.setAcceptHeader(method, acceptValue);
HighLevelRestApi.setContentTypeHeader(method, contentTypeValue);
HttpResponseMessage responseMessage = LowLevelRestApi.executeHttpMethod(method);
return responseMessage;
}
/**
* This method implements the HTTP Get Method
*
* @param uri
* Resource URI
* @return Content represented by the Resource URI
*/
public static HttpResponseMessage Get(String uri, String acceptValue, String contentTypeValue) {
GetMethod method = null;
if (uri.contains("?")) {
String[] split = uri.split("\\?");
method = new GetMethod(split[0]);
method.setQueryString(HighLevelRestApi.createNameValuePairArrayFromQuery(split[1]));
} else {
method = new GetMethod(uri);
}
HighLevelRestApi.setAcceptHeader(method, acceptValue);
HighLevelRestApi.setContentTypeHeader(method, contentTypeValue);
HttpResponseMessage responseMessage = LowLevelRestApi.executeHttpMethod(method);
return responseMessage;
}
private static NameValuePair[] createNameValuePairArrayFromQuery(String query) {
String[] pairs = query.trim().split("&");
NameValuePair[] nameValuePairArray = new NameValuePair[pairs.length];
int count = 0;
for (String pair : pairs) {
String[] keyValue = pair.split("=");
NameValuePair nameValuePair = new NameValuePair();
nameValuePair.setName(keyValue[0]);
nameValuePair.setValue(keyValue[1]);
nameValuePairArray[count] = nameValuePair;
count++;
}
return nameValuePairArray;
}
/**
* This method implements the HTTP Delete Method
*
* @param uri
* Resource URI
* @return ResponseCode of HTTP Interaction
*/
public static HttpResponseMessage Delete(String uri, String acceptValue, String contentTypeValue) {
DeleteMethod method = new DeleteMethod(uri);
HighLevelRestApi.setAcceptHeader(method, acceptValue);
HighLevelRestApi.setContentTypeHeader(method, contentTypeValue);
HttpResponseMessage responseMessage = LowLevelRestApi.executeHttpMethod(method);
return responseMessage;
}
private static void setAcceptHeader(HttpMethodBase method, String value) {
if (!StringUtils.isEmpty(value)) {
method.setRequestHeader("Accept", value);
} else {
method.setRequestHeader("Accept", "application/xml");
}
}
private static void setContentTypeHeader(HttpMethodBase method, String value) {
if (!StringUtils.isEmpty(value)) {
method.setRequestHeader("content-type", value);
} else {
method.setRequestHeader("content-type", "application/json");
}
}
private static String completeUri(String uri) {
String urlReg = "^http[\\s\\S]*";
if (uri != null && !uri.matches(urlReg)) {
uri = PropertyUtil.getBasePath() + uri;
}
return uri;
}
}
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