/*
* Copyright 2013, The Sporting Exchange Limited
*
* 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.betfair.cougar.core.impl.ev;
import com.betfair.cougar.api.ExecutionContext;
import com.betfair.cougar.core.api.ev.*;
import com.betfair.cougar.core.api.exception.CougarException;
import com.betfair.cougar.core.api.exception.CougarFrameworkException;
import com.betfair.cougar.core.api.exception.CougarServiceException;
import com.betfair.cougar.core.api.exception.ServerFaultCode;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
public class InterceptingExecutableWrapper implements ExecutableWrapper {
private final Executable exec;
private final List<ExecutionPreProcessor> preExecutionInterceptorList;
private final List<ExecutionPostProcessor> postExecutionInterceptorList;
private Map<Thread, List<ExecutionPreProcessor>> unexecutedPreProcessorsByThread = new ConcurrentHashMap<>();
public InterceptingExecutableWrapper(Executable exec, List<ExecutionPreProcessor> preExecutionInterceptorList, List<ExecutionPostProcessor> postExecutionInterceptorList) {
this.exec = exec;
this.preExecutionInterceptorList = preExecutionInterceptorList;
this.postExecutionInterceptorList = postExecutionInterceptorList;
}
@Override
public void execute(final ExecutionContext ctx, final OperationKey key, final Object[] args, final ExecutionObserver observer, final ExecutionVenue executionVenue, final TimeConstraints timeConstraints) {
final Runnable execution = new Runnable() {
@Override
public void run() {
ExecutionObserver newObserver = new PostProcessingInterceptorWrapper(observer, postExecutionInterceptorList, ctx, key, args);
try {
exec.execute(
ctx,
key,
args,
newObserver,
executionVenue,
timeConstraints);
} catch (CougarException e) {
newObserver.onResult(new ExecutionResult(e));
newObserver.onResult(new ExecutionResult(
new CougarFrameworkException(ServerFaultCode.ServiceRuntimeException, "Exception thrown by service method", e)));
}
catch (Exception e) {
}
}
};
List<ExecutionPreProcessor> unexecuted = unexecutedPreProcessorsByThread.get(Thread.currentThread());
if (unexecuted == null) {
// this has to be a new list since the InterceptionUtils.execute call below is allowed to (expected to even) mutate the second list passed in
unexecuted = new ArrayList<>(preExecutionInterceptorList);
}
try {
InterceptionUtils.execute(preExecutionInterceptorList, unexecuted, ExecutionRequirement.PRE_EXECUTE, execution, ctx, key, args, observer);
}
finally {
unexecutedPreProcessorsByThread.remove(Thread.currentThread());
}
}
@Override
public Executable getWrappedExecutable() {
return exec;
}
@Override
public <T extends Executable> T findChild(Class<T> clazz) {
return ExecutableWrapperUtils.findChild(clazz, this);
}
public void setUnexecutedPreProcessorsForThisThread(List<ExecutionPreProcessor> remainingProcessors) {
unexecutedPreProcessorsByThread.put(Thread.currentThread(), remainingProcessors);
}
}