/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* 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.kie.server.services.jbpm.ui;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.lang3.reflect.MethodUtils;
import org.kie.server.api.commands.CommandScript;
import org.kie.server.api.commands.DescriptorCommand;
import org.kie.server.api.marshalling.MarshallingFormat;
import org.kie.server.api.model.KieServerCommand;
import org.kie.server.api.model.ServiceResponse;
import org.kie.server.api.model.ServiceResponsesList;
import org.kie.server.api.model.Wrapped;
import org.kie.server.services.api.KieContainerCommandService;
import org.kie.server.services.api.KieServerRegistry;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class JBPMUIKieContainerCommandServiceImpl implements KieContainerCommandService {
private static final Logger logger = LoggerFactory.getLogger(JBPMUIKieContainerCommandServiceImpl.class);
private KieServerRegistry context;
private FormServiceBase formServiceBase;
private ImageServiceBase imageServiceBase;
public JBPMUIKieContainerCommandServiceImpl(KieServerRegistry context, FormServiceBase formServiceBase, ImageServiceBase imageServiceBase) {
this.context = context;
this.formServiceBase = formServiceBase;
this.imageServiceBase = imageServiceBase;
}
@Override
public ServiceResponse<String> callContainer(String containerId, String payload, MarshallingFormat marshallingFormat, String classType) {
return null;
}
@Override
public ServiceResponsesList executeScript(CommandScript commands, MarshallingFormat marshallingFormat, String classType) {
List<ServiceResponse<? extends Object>> responses = new ArrayList<ServiceResponse<? extends Object>>();
for (KieServerCommand command : commands.getCommands()) {
if (!(command instanceof DescriptorCommand)) {
logger.warn("Unsupported command '{}' given, will not process it", command.getClass().getName());
continue;
}
try {
Object result = null;
Object handler = null;
DescriptorCommand descriptorCommand = (DescriptorCommand) command;
// find out the handler to call to process given command
if ("FormService".equals(descriptorCommand.getService())) {
handler = formServiceBase;
} else if ("ImageService".equals(descriptorCommand.getService())) {
handler = imageServiceBase;
} else {
throw new IllegalStateException("Unable to find handler for " + descriptorCommand.getService() + " service");
}
List<Object> arguments = new ArrayList();
// process and unwrap arguments
for (Object arg : descriptorCommand.getArguments()) {
logger.debug("Before :: Argument with type {} and value {}", arg.getClass(), arg);
if (arg instanceof Wrapped) {
arg = ((Wrapped) arg).unwrap();
}
logger.debug("After :: Argument with type {} and value {}", arg.getClass(), arg);
arguments.add(arg);
}
logger.debug("About to execute {} operation on {} with args {}", descriptorCommand.getMethod(), handler, arguments);
// process command via reflection and handler
result = MethodUtils.invokeMethod(handler, descriptorCommand.getMethod(), arguments.toArray());
logger.debug("Handler {} returned response {}", handler, result);
// return successful result
responses.add(new ServiceResponse(ServiceResponse.ResponseType.SUCCESS, "", result));
} catch (InvocationTargetException e){
responses.add(new ServiceResponse(ServiceResponse.ResponseType.FAILURE, e.getTargetException().getMessage()));
} catch (Throwable e) {
logger.error("Error while processing {} command", command, e);
// return failure result
responses.add(new ServiceResponse(ServiceResponse.ResponseType.FAILURE, e.getMessage()));
}
}
logger.debug("About to return responses '{}'", responses);
return new ServiceResponsesList(responses);
}
}