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package com.sun.jersey.server.impl.monitoring;
import com.sun.jersey.api.model.AbstractResourceMethod;
import com.sun.jersey.api.model.AbstractSubResourceLocator;
import com.sun.jersey.core.spi.component.ProviderServices;
import com.sun.jersey.spi.container.ContainerRequest;
import com.sun.jersey.spi.container.ContainerResponse;
import com.sun.jersey.spi.monitoring.DispatchingListener;
import com.sun.jersey.spi.monitoring.DispatchingListenerAdapter;
import com.sun.jersey.spi.monitoring.RequestListener;
import com.sun.jersey.spi.monitoring.RequestListenerAdapter;
import com.sun.jersey.spi.monitoring.ResponseListener;
import com.sun.jersey.spi.monitoring.ResponseListenerAdapter;
import java.util.Collections;
import java.util.Set;
import javax.ws.rs.ext.ExceptionMapper;
/**
* @author Jakub.Podlesak@Oracle.Com
*/
public final class MonitoringProviderFactory {
private MonitoringProviderFactory() {}
private static class EmptyListener implements RequestListener, ResponseListener, DispatchingListener {
@Override
public void onSubResource(long id, Class subResource) {
}
@Override
public void onSubResourceLocator(long id, AbstractSubResourceLocator locator) {
}
@Override
public void onResourceMethod(long id, AbstractResourceMethod method) {
}
@Override
public void onRequest(long id, ContainerRequest request) {
}
@Override
public void onError(long id, Throwable ex) {
}
@Override
public void onResponse(long id, ContainerResponse response) {
}
@Override
public void onMappedException(long id, Throwable exception, ExceptionMapper mapper) {
}
}
private static class AggregatedRequestListener implements RequestListener {
private final Set<RequestListener> listeners;
private AggregatedRequestListener(Set<RequestListener> listeners) {
this.listeners = Collections.unmodifiableSet(listeners);
}
@Override
public void onRequest(long id, ContainerRequest request) {
for (RequestListener requestListener : listeners) {
requestListener.onRequest(id, request);
}
}
}
private static class AggregatedResponseListener implements ResponseListener {
private final Set<ResponseListener> listeners;
private AggregatedResponseListener(Set<ResponseListener> listeners) {
this.listeners = Collections.unmodifiableSet(listeners);
}
@Override
public void onError(long id, Throwable ex) {
for (ResponseListener responseListener : listeners) {
responseListener.onError(id, ex);
}
}
@Override
public void onResponse(long id, ContainerResponse response) {
for (ResponseListener responseListener : listeners) {
responseListener.onResponse(id, response);
}
}
@Override
public void onMappedException(long id, Throwable exception, ExceptionMapper mapper) {
for (ResponseListener responseListener : listeners) {
responseListener.onMappedException(id, exception, mapper);
}
}
}
private static class AggregatedDispatchingListener implements DispatchingListener {
private final Set<DispatchingListener> listeners;
private AggregatedDispatchingListener(Set<DispatchingListener> listeners) {
this.listeners = Collections.unmodifiableSet(listeners);
}
@Override
public void onSubResource(long id, Class subResource) {
for (DispatchingListener dispatchingListener : listeners) {
dispatchingListener.onSubResource(id, subResource);
}
}
@Override
public void onSubResourceLocator(long id, AbstractSubResourceLocator locator) {
for (DispatchingListener dispatchingListener : listeners) {
dispatchingListener.onSubResourceLocator(id, locator);
}
}
@Override
public void onResourceMethod(long id, AbstractResourceMethod method) {
for (DispatchingListener dispatchingListener : listeners) {
dispatchingListener.onResourceMethod(id, method);
}
}
}
private final static EmptyListener EMPTY_LISTENER = new EmptyListener();
public static RequestListener createRequestListener(ProviderServices providerServices) {
final Set<RequestListener> listeners = providerServices.getProvidersAndServices(RequestListener.class);
RequestListener requestListener = listeners.isEmpty() ? EMPTY_LISTENER : new AggregatedRequestListener(listeners);
for(RequestListenerAdapter a : providerServices.getProvidersAndServices(RequestListenerAdapter.class)) {
requestListener = a.adapt(requestListener);
}
return requestListener;
}
public static DispatchingListener createDispatchingListener(ProviderServices providerServices) {
final Set<DispatchingListener> listeners = providerServices.getProvidersAndServices(DispatchingListener.class);
DispatchingListener dispatchingListener = listeners.isEmpty() ? EMPTY_LISTENER : new AggregatedDispatchingListener(listeners);
for(DispatchingListenerAdapter a : providerServices.getProvidersAndServices(DispatchingListenerAdapter.class)) {
dispatchingListener = a.adapt(dispatchingListener);
}
return dispatchingListener;
}
public static ResponseListener createResponseListener(ProviderServices providerServices) {
final Set<ResponseListener> listeners = providerServices.getProvidersAndServices(ResponseListener.class);
ResponseListener responseListener = listeners.isEmpty() ? EMPTY_LISTENER : new AggregatedResponseListener(listeners);
for(ResponseListenerAdapter a : providerServices.getProvidersAndServices(ResponseListenerAdapter.class)) {
responseListener = a.adapt(responseListener);
}
return responseListener;
}
}