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org.distributeme.agents.transporter.generated.RemoteTransporterServiceStub Maven / Gradle / Ivy
package org.distributeme.agents.transporter.generated;
//CHECKSTYLE:OFF
import java.util.List;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ConcurrentHashMap;
import org.slf4j.Logger;
import java.rmi.RemoteException;
import java.rmi.NotBoundException;
import org.distributeme.core.RegistryUtil;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import org.distributeme.core.ServiceDescriptor;
import org.distributeme.core.ServiceDescriptor.Protocol;
import org.distributeme.core.DiscoveryMode;
import org.distributeme.core.failing.FailingStrategy;
import org.distributeme.core.concurrencycontrol.ConcurrencyControlStrategy;
import org.distributeme.core.failing.FailDecision;
import org.distributeme.core.ClientSideCallContext;
import org.distributeme.core.exception.DistributemeRuntimeException;
import org.distributeme.core.exception.NoConnectionToServerException;
import org.distributeme.core.exception.ServiceUnavailableException;
import org.distributeme.core.Defaults;
import org.distributeme.core.interceptor.ClientSideRequestInterceptor;
import org.distributeme.core.interceptor.InterceptorRegistry;
import org.distributeme.core.interceptor.InterceptorResponse;
import org.distributeme.core.interceptor.InterceptionContext;
import org.distributeme.core.interceptor.InterceptionPhase;
import org.distributeme.core.interceptor.FailedByInterceptorException;
public class RemoteTransporterServiceStub implements org.distributeme.agents.transporter.TransporterService{
private volatile ConcurrentMap delegates = new ConcurrentHashMap();
private DiscoveryMode discoveryMode = DiscoveryMode.AUTO;
// ROUTER DECL V2
// No class-wide-router set, skipping.
// Method wide routers if applicable
// Method wide routers END
// ROUTER DECL V2 end
// Failing
// Class wide failing strategy
private FailingStrategy clazzWideFailingStrategy = Defaults.getDefaultFailingStrategy();
private FailingStrategy receiveAndAwakeAgentFailingStrategy_orgdistributemeagentsAgentPackageagent = clazzWideFailingStrategy;
// Failing end
// CONCURRENCY CONTROL
// Class wide concurrency control strategy
private ConcurrencyControlStrategy clazzWideCCStrategy = Defaults.getDefaultConcurrencyControlStrategy();
private ConcurrencyControlStrategy receiveAndAwakeAgentCCStrategy_orgdistributemeagentsAgentPackageagent = clazzWideCCStrategy;
// CONCURRENCY CONTROL end
public RemoteTransporterServiceStub(){
discoveryMode = DiscoveryMode.AUTO;
}
private ServiceDescriptor manuallySetDescriptor;
private RemoteTransporterService manuallySetTarget;
public RemoteTransporterServiceStub(ServiceDescriptor target){
discoveryMode = DiscoveryMode.MANUAL;
manuallySetDescriptor = target;
try{
manuallySetTarget = lookup(manuallySetDescriptor);
}catch(NoConnectionToServerException e){
throw new IllegalStateException("Can not resolve manually set reference", e);
}
}
public void receiveAndAwakeAgent(org.distributeme.agents.AgentPackage agent) throws org.distributeme.agents.transporter.TransporterServiceException{
receiveAndAwakeAgent(agent, (ClientSideCallContext)null);
} //...public void receiveAndAwakeAgent(org.distributeme.agents.AgentPackage agent) throws org.distributeme.agents.transporter.TransporterServiceException
private void receiveAndAwakeAgent(org.distributeme.agents.AgentPackage agent, org.distributeme.core.ClientSideCallContext diMeCallContext) throws org.distributeme.agents.transporter.TransporterServiceException{
List __fromServerSide = null;
Exception exceptionInMethod = null;
// This flag is used by the interceptor logic to mark a request es failed, even it is not.
boolean diMeForceFailing = false;
boolean abortAndFail = false;
if (diMeCallContext == null)
diMeCallContext = new ClientSideCallContext("receiveAndAwakeAgent");
if (discoveryMode == DiscoveryMode.MANUAL) {
diMeCallContext.setServiceId(manuallySetDescriptor.getServiceId());
}
if (discoveryMode==DiscoveryMode.AUTO && diMeCallContext.getServiceId()==null)
diMeCallContext.setServiceId(TransporterServiceConstants.getServiceId());
HashMap __transportableCallContext = diMeCallContext.getTransportableCallContext();
// Initialize interceptors
List diMeInterceptors = InterceptorRegistry.getInstance().getClientSideRequestInterceptors();
InterceptionContext diMeInterceptionContext = new InterceptionContext();
// Concurrency control, client side - start
receiveAndAwakeAgentCCStrategy_orgdistributemeagentsAgentPackageagent.notifyClientSideCallStarted(diMeCallContext);
try{
ArrayList diMeParameters = new ArrayList();
diMeParameters.add(agent);
diMeCallContext.setParameters(diMeParameters);
diMeInterceptionContext.setCurrentPhase(InterceptionPhase.BEFORE_SERVICE_CALL);
for (ClientSideRequestInterceptor interceptor : diMeInterceptors){
InterceptorResponse interceptorResponse = interceptor.beforeServiceCall(diMeCallContext, diMeInterceptionContext);
switch(interceptorResponse.getCommand()){
case ABORT:
if (interceptorResponse.getException() instanceof RuntimeException)
throw (RuntimeException) interceptorResponse.getException();
if (interceptorResponse.getException() instanceof org.distributeme.agents.transporter.TransporterServiceException)
throw (org.distributeme.agents.transporter.TransporterServiceException) interceptorResponse.getException();
throw new RuntimeException("Interceptor exception",interceptorResponse.getException());
case RETURN:
return;
case CONTINUE:
break;
case ABORT_AND_FAIL:
abortAndFail = true;
exceptionInMethod = new FailedByInterceptorException();
break;
case RETURN_AND_FAIL:
// Force failing logic to work.
diMeForceFailing = true;
exceptionInMethod = new FailedByInterceptorException();
break;
default:
throw new IllegalStateException("Unsupported or unexpected command from interceptor " + interceptorResponse.getCommand()+ " in phase:"+diMeInterceptionContext.getCurrentPhase());
} //...switch
} //...for
// parse parameters again in case an interceptor modified them
agent = (org.distributeme.agents.AgentPackage) diMeParameters.get(0);
if (!abortAndFail){
__fromServerSide = getDelegate(diMeCallContext.getServiceId()).receiveAndAwakeAgent(agent, __transportableCallContext);
__transportableCallContext.putAll(((HashMap)__fromServerSide.get(1)));
return;
}
}catch(RemoteException e){
// handle exceptions properly
e.printStackTrace();
notifyDelegateFailed(diMeCallContext.getServiceId());
exceptionInMethod = e;
}catch(NoConnectionToServerException e){
exceptionInMethod = e;
}finally{
// Concurrency control, client side - end
receiveAndAwakeAgentCCStrategy_orgdistributemeagentsAgentPackageagent.notifyClientSideCallFinished(diMeCallContext);
diMeInterceptionContext.setCurrentPhase(InterceptionPhase.AFTER_SERVICE_CALL);
if (__fromServerSide!=null){
diMeInterceptionContext.setReturnValue(__fromServerSide.get(0));
}
diMeInterceptionContext.setException(exceptionInMethod);
boolean diMeReturnOverriden = false;
for (ClientSideRequestInterceptor interceptor : diMeInterceptors){
InterceptorResponse interceptorResponse = interceptor.afterServiceCall(diMeCallContext, diMeInterceptionContext);
switch(interceptorResponse.getCommand()){
case ABORT:
if (interceptorResponse.getException() instanceof RuntimeException)
throw (RuntimeException) interceptorResponse.getException();
if (interceptorResponse.getException() instanceof org.distributeme.agents.transporter.TransporterServiceException)
throw (org.distributeme.agents.transporter.TransporterServiceException) interceptorResponse.getException();
throw new RuntimeException("Interceptor exception",interceptorResponse.getException());
case RETURN:
return;
case CONTINUE:
break;
case ABORT_AND_FAIL:
abortAndFail = true;
break;
case RETURN_AND_FAIL:
// Force failing logic to work.
receiveAndAwakeAgentFailingStrategy_orgdistributemeagentsAgentPackageagent.callFailed(diMeCallContext);
break;
default:
throw new IllegalStateException("Unsupported or unexpected command from interceptor " + interceptorResponse.getCommand()+ " in phase:"+diMeInterceptionContext.getCurrentPhase());
} //...switch
} //...for
} //...finally
// Failing
if (exceptionInMethod!=null || diMeForceFailing || abortAndFail){
FailDecision failDecision = receiveAndAwakeAgentFailingStrategy_orgdistributemeagentsAgentPackageagent.callFailed(diMeCallContext);
if (failDecision.getTargetService()!=null)
diMeCallContext.setServiceId(failDecision.getTargetService());
switch(failDecision.getReaction()){
case RETRY:
receiveAndAwakeAgent(agent, diMeCallContext.increaseCallCount());
return;
case RETRYONCE:
// Only retry if its the first call
if (!diMeCallContext.isFirstCall())
break;
receiveAndAwakeAgent(agent, diMeCallContext.increaseCallCount());
return;
case FAIL:
default:
// Fail or default is to do nothing at all and let the request fail
} //...switch(failDecision)
}
// fail through, if we are here, we must have had an exception before.
if (exceptionInMethod == null)
throw new AssertionError("Exception must have been thrown before, but it wasn't, framework error!");
throw mapException(exceptionInMethod);
}
// according to findbugs this method is never used, so we remove it for now reduce warnings.
//private void notifyDelegateFailed(){
//notifyDelegateFailed(TransporterServiceConstants.getServiceId());
//}
private void notifyDelegateFailed(String serviceId){
if (discoveryMode==DiscoveryMode.MANUAL){
manuallySetTarget = null;
return;
}
if (serviceId!=null)
delegates.remove(serviceId);
} //...notifyDelegateFailed
private RemoteTransporterService getDelegate() throws NoConnectionToServerException{
if (discoveryMode==DiscoveryMode.MANUAL){
if (manuallySetTarget!=null)
return manuallySetTarget;
manuallySetTarget = lookup(manuallySetDescriptor);
return manuallySetTarget;
} //...if (mode==MANUAL)
return getDelegate(TransporterServiceConstants.getServiceId());
}
private RemoteTransporterService getDelegate(String serviceId) throws NoConnectionToServerException{
// if no serviceId is provided, fallback to default resolve with manual mode
if (serviceId==null || discoveryMode==DiscoveryMode.MANUAL)
return getDelegate();
RemoteTransporterService delegate = delegates.get(serviceId);
if (delegate==null){
try{
delegate = lookup(serviceId);
RemoteTransporterService existingDelegate = delegates.putIfAbsent(serviceId, delegate);
if (existingDelegate!=null)
delegate = existingDelegate;
}catch(Exception e){
// //TODO - generate and throw typed exception.
throw new NoConnectionToServerException("Couldn't lookup delegate because: "+e.getMessage()+" at "+RegistryUtil.describeRegistry(), e);
}//try
} //...first if (del==null)
return delegate;
} //...fun
private RemoteTransporterService lookup(String serviceId) throws NoConnectionToServerException{
// //first we need to lookup target host.
ServiceDescriptor toLookup = new ServiceDescriptor(Protocol.RMI, serviceId);
ServiceDescriptor targetService = RegistryUtil.resolve(toLookup);
if (targetService==null)
throw new RuntimeException("Can't resolve host for an instance of "+TransporterServiceConstants.getServiceId());
Registry registry = null;
try{
registry = LocateRegistry.getRegistry(targetService.getHost(), targetService.getPort());
}catch(Exception e){
System.err.println("lookup - couldn't obtain rmi registry on "+targetService+", aborting lookup"); e.printStackTrace();
throw new NoConnectionToServerException("Can't resolve rmi registry for an instance of "+TransporterServiceConstants.getServiceId());
}
try{
return (RemoteTransporterService) registry.lookup(serviceId);
}catch(RemoteException e){
throw new NoConnectionToServerException("Can't lookup service in the target rmi registry for an instance of "+serviceId, e);
}catch(NotBoundException e){
throw new NoConnectionToServerException("Can't lookup service in the target rmi registry for an instance of "+serviceId, e);
}
}
private RemoteTransporterService lookup(ServiceDescriptor serviceDescriptor) throws NoConnectionToServerException{
Registry registry = null;
try{
registry = LocateRegistry.getRegistry(serviceDescriptor.getHost(), serviceDescriptor.getPort());
}catch(Exception e){
System.err.println("lookup - couldn't obtain rmi registry on "+serviceDescriptor+", aborting lookup"); e.printStackTrace();
throw new NoConnectionToServerException("Can't resolve rmi registry for "+serviceDescriptor);
}
try{
RemoteTransporterService ret = (RemoteTransporterService) registry.lookup(serviceDescriptor.getServiceId());
return ret;
}catch(RemoteException e){
throw new NoConnectionToServerException("Can't lookup service in the target rmi registry for an instance of "+serviceDescriptor, e);
}catch(NotBoundException e){
throw new NoConnectionToServerException("Can't lookup service in the target rmi registry for an instance of "+serviceDescriptor, e);
}
}
private DistributemeRuntimeException mapException(Exception in){
if (in instanceof DistributemeRuntimeException)
return (DistributemeRuntimeException) in;
if (in instanceof RemoteException)
return new ServiceUnavailableException ("Service unavailable due to rmi failure: "+in.getMessage(), in);
return new ServiceUnavailableException("Unexpected exception: "+in.getMessage()+" " + in.getClass().getName(), in);
}
}
