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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.thrift;
import java.util.Collections;
import java.util.Map;
import org.apache.thrift.async.AsyncMethodCallback;
import org.apache.thrift.protocol.*;
import org.apache.thrift.server.AbstractNonblockingServer.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class TBaseAsyncProcessor<I> implements TAsyncProcessor, TProcessor {
protected final Logger LOGGER = LoggerFactory.getLogger(getClass().getName());
final I iface;
final Map<String, AsyncProcessFunction<I, ? extends TBase, ?>> processMap;
public TBaseAsyncProcessor(
I iface, Map<String, AsyncProcessFunction<I, ? extends TBase, ?>> processMap) {
this.iface = iface;
this.processMap = processMap;
}
public Map<String, AsyncProcessFunction<I, ? extends TBase, ?>> getProcessMapView() {
return Collections.unmodifiableMap(processMap);
}
public void process(final AsyncFrameBuffer fb) throws TException {
final TProtocol in = fb.getInputProtocol();
final TProtocol out = fb.getOutputProtocol();
// Find processing function
final TMessage msg = in.readMessageBegin();
AsyncProcessFunction fn = processMap.get(msg.name);
if (fn == null) {
TProtocolUtil.skip(in, TType.STRUCT);
in.readMessageEnd();
TApplicationException x =
new TApplicationException(
TApplicationException.UNKNOWN_METHOD, "Invalid method name: '" + msg.name + "'");
LOGGER.debug("Invalid method name", x);
// this means it is a two-way request, so we can send a reply
if (msg.type == TMessageType.CALL) {
out.writeMessageBegin(new TMessage(msg.name, TMessageType.EXCEPTION, msg.seqid));
x.write(out);
out.writeMessageEnd();
out.getTransport().flush();
}
fb.responseReady();
return;
}
// Get Args
TBase args = fn.getEmptyArgsInstance();
try {
args.read(in);
} catch (TProtocolException e) {
in.readMessageEnd();
TApplicationException x =
new TApplicationException(TApplicationException.PROTOCOL_ERROR, e.getMessage());
LOGGER.debug("Could not retrieve function arguments", x);
if (!fn.isOneway()) {
out.writeMessageBegin(new TMessage(msg.name, TMessageType.EXCEPTION, msg.seqid));
x.write(out);
out.writeMessageEnd();
out.getTransport().flush();
}
fb.responseReady();
return;
}
in.readMessageEnd();
if (fn.isOneway()) {
fb.responseReady();
}
// start off processing function
AsyncMethodCallback resultHandler = fn.getResultHandler(fb, msg.seqid);
try {
fn.start(iface, args, resultHandler);
} catch (Exception e) {
LOGGER.debug("Exception handling function", e);
resultHandler.onError(e);
}
return;
}
@Override
public void process(TProtocol in, TProtocol out) throws TException {}
}
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