/*
Copyright (c) 2012 LinkedIn Corp.
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 com.linkedin.restli.server;
import com.linkedin.r2.message.RequestContext;
import com.linkedin.r2.message.rest.RestException;
import com.linkedin.r2.message.rest.RestRequest;
import com.linkedin.r2.message.rest.RestResponse;
import com.linkedin.r2.message.rest.RestStatus;
import com.linkedin.r2.message.stream.StreamRequest;
import com.linkedin.r2.message.stream.StreamResponse;
import com.linkedin.r2.transport.common.RestRequestHandler;
import com.linkedin.r2.transport.common.StreamRequestHandler;
import com.linkedin.r2.transport.common.StreamRequestHandlerAdapter;
import com.linkedin.r2.transport.common.bridge.common.TransportCallback;
import com.linkedin.r2.transport.common.bridge.common.TransportResponseImpl;
import com.linkedin.r2.transport.common.bridge.server.TransportCallbackAdapter;
import com.linkedin.r2.transport.common.bridge.server.TransportDispatcher;
import java.util.Map;
/**
* Delegates dispatch to a single {@link RestRequestHandler}.
*
* @author dellamag
*/
public class DelegatingTransportDispatcher implements TransportDispatcher
{
// for the streaming & rest-over-stream code path
private final StreamRequestHandler _streamHandler;
// for the legacy code path
private final RestRequestHandler _restHandler;
public DelegatingTransportDispatcher(final RestRequestHandler handler)
{
_streamHandler = new StreamRequestHandlerAdapter(handler);
_restHandler = handler;
}
@Override
public void handleRestRequest(RestRequest req, Map<String, String> wireAttrs,
RequestContext requestContext, TransportCallback<RestResponse> callback)
{
try
{
_restHandler.handleRequest(req, requestContext, new TransportCallbackAdapter<RestResponse>(callback));
}
catch (Exception e)
{
callback.onResponse(TransportResponseImpl.<RestResponse>error(RestException.forError(RestStatus.INTERNAL_SERVER_ERROR, e)));
}
}
@Override
public void handleStreamRequest(final StreamRequest req,
final Map<String, String> wireAttrs,
final RequestContext requestContext,
final TransportCallback<StreamResponse> callback)
{
try
{
_streamHandler.handleRequest(req, requestContext, new TransportCallbackAdapter<StreamResponse>(callback));
}
catch (Exception e)
{
final Exception ex = RestException.forError(RestStatus.INTERNAL_SERVER_ERROR, e);
callback.onResponse(TransportResponseImpl.<StreamResponse>error(ex));
}
}
}