diff options
Diffstat (limited to 'wso2/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/Bpel4RestLightOperation.java')
-rw-r--r-- | wso2/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/Bpel4RestLightOperation.java | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/wso2/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/Bpel4RestLightOperation.java b/wso2/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/Bpel4RestLightOperation.java new file mode 100644 index 0000000..2335f49 --- /dev/null +++ b/wso2/wso2bpel-ext/wso2bpel-core/BPEL4RESTLight/src/main/java/de/unistuttgart/iaas/bpel/extensions/bpel4restlight/Bpel4RestLightOperation.java @@ -0,0 +1,147 @@ +package de.unistuttgart.iaas.bpel.extensions.bpel4restlight; + +import java.io.File; +import java.io.FileInputStream; +import java.io.InputStream; +import java.util.Properties; + +import org.apache.commons.logging.Log; +import org.apache.commons.logging.LogFactory; +import org.apache.ode.bpel.common.FaultException; +import org.apache.ode.bpel.runtime.extension.AbstractSyncExtensionOperation; +import org.apache.ode.bpel.runtime.extension.ExtensionContext; +import org.opentosca.bpel4restlight.rest.HighLevelRestApi; +import org.opentosca.bpel4restlight.rest.HttpMethod; +import org.opentosca.bpel4restlight.rest.HttpResponseMessage; +/** + * + * Copyright 2011 IAAS University of Stuttgart <br> + * <br> + * + * This class provides 4 BPEL4RestLight ExtensionActivity-operations which + * correspond to the 4 typical REST-Operations GET, PUT, POST and Delete. + * + * @author uwe.breitenbuecher@iaas.uni-stuttgart.de + * + */ +import org.w3c.dom.Element; + +import de.unistuttgart.iaas.bpel.extensions.bpel4restlight.util.Bpel4RestLightUtil; +import de.unistuttgart.iaas.bpel.util.BPELVariableInjectionUtil; +import de.unistuttgart.iaas.bpel.util.BpelUtil; + + +public class Bpel4RestLightOperation extends AbstractSyncExtensionOperation { + protected static final Log log = LogFactory.getLog(Bpel4RestLightOperation.class); + private static final String EXT_PROPERTIES = "wso2bps-ext.properties"; // extra properties setting + private static final String MSB_URL = "MSB_URL"; // http://msb:port, ext property msb url, if exist replace the request url + + + public static String wrapper = "temporary-simple-type-wrapper"; + private static String msbUrl = null; + + static { + + try { + File file = new File(EXT_PROPERTIES); + if(file.exists()) { + Properties p=new Properties(); + InputStream inputStream = new FileInputStream(file); + p.load(inputStream); + inputStream.close(); + msbUrl = p.getProperty(MSB_URL); + } + + } catch (Exception e) { + e.printStackTrace(); + } + + } + + + private void processResponseMessage(HttpResponseMessage responseMessage, ExtensionContext context, Element element) throws FaultException { + // Write responsePayload to designated variable + String responsePayloadVariableName = Bpel4RestLightUtil.getMethodAttributeValue(element, MethodAttribute.RESPONSEPAYLOADVARIABLE); + String statusCodeVariableName = Bpel4RestLightUtil.getMethodAttributeValue(element, MethodAttribute.STATUSCODEVARIABLE); + + if (responsePayloadVariableName != null && !responsePayloadVariableName.equals("")) { + BpelUtil.writeResponsePayloadToVariable(context, responseMessage.getResponseBody(), responsePayloadVariableName, Bpel4RestLightOperation.wrapper); + } + + if (statusCodeVariableName != null && !statusCodeVariableName.equals("")) { + String StatusCode = "" + responseMessage.getStatusCode(); // int can not be casted to String + + BpelUtil.writeResponsePayloadToVariable(context, StatusCode, statusCodeVariableName, Bpel4RestLightOperation.wrapper); + + } + } + + /** {@inheritDoc} */ + @Override + protected void runSync(ExtensionContext context, Element element) throws FaultException { + element = BPELVariableInjectionUtil.replaceExtensionVariables(context, element); + log.debug("LocalName of edited element: " + element.getLocalName()); + String httpMethod = element.getLocalName(); + + // Extract requestUri + String requestUri = getRequestUrl(element); + + HttpResponseMessage responseMessage = null; + String acceptHeader = Bpel4RestLightUtil.extractAcceptHeader(context, element); + String contentTypeHeader = Bpel4RestLightUtil.extractContentTypeHeader(context, element); + String requestPayload = Bpel4RestLightUtil.extractRequestPayload(context, element); + + // Execute corresponding HttpMethod via the HighLevelRestApi + switch (HttpMethod.valueOf(httpMethod)) { + + case PUT: { + responseMessage = HighLevelRestApi.Put(requestUri, requestPayload, acceptHeader, contentTypeHeader); + break; + } + + case POST: { + responseMessage = HighLevelRestApi.Post(requestUri, requestPayload, acceptHeader, contentTypeHeader); + break; + } + + case GET: { + responseMessage = HighLevelRestApi.Get(requestUri, acceptHeader, contentTypeHeader); + break; + } + + case DELETE: { + responseMessage = HighLevelRestApi.Delete(requestUri, acceptHeader, contentTypeHeader); + break; + } + } + + processResponseMessage(responseMessage, context, element); + // Bpel4RestLightOperation.wrapper = null; + } + + + /** + * getRequestUrl + * get request url from element, if exists msbUrl property, then replace the ip and port + * @param element + * @return + */ + private String getRequestUrl(Element element) { + String requestUri = Bpel4RestLightUtil.getMethodAttributeValue(element, MethodAttribute.REQUESTURI); + log.debug("original url:" + requestUri); + if(msbUrl == null || "".equals(msbUrl) || "http://msb:port".equals(msbUrl)) { + return requestUri; + } else { + requestUri = requestUri.substring(requestUri.indexOf("//") + 2); + int index = requestUri.indexOf("/"); + if(index == -1) { + + } else { + requestUri = requestUri.substring(index); + } + requestUri = msbUrl + requestUri; + log.debug("changed url:" + requestUri); + return requestUri; + } + } +} |