/*
* Copyright 2017 Red Hat, Inc. and/or its affiliates.
*
* 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 org.jbpm.runtime.manager.impl.error;
import java.util.concurrent.atomic.AtomicInteger;
import org.drools.core.command.impl.AbstractInterceptor;
import org.kie.api.runtime.Environment;
import org.kie.api.runtime.EnvironmentName;
import org.kie.api.runtime.Executable;
import org.kie.api.runtime.RequestContext;
import org.kie.internal.runtime.error.ExecutionErrorManager;
public class ExecutionErrorHandlerInterceptor extends AbstractInterceptor {
private static final ThreadLocal<AtomicInteger> invocationsCounter = new ThreadLocal<>();
private ExecutionErrorManager executionErrorManager;
public ExecutionErrorHandlerInterceptor(Environment env) {
this.executionErrorManager = (ExecutionErrorManager) env.get(EnvironmentName.EXEC_ERROR_MANAGER);
}
@Override
public final RequestContext execute( Executable executable, RequestContext ctx ) {
AtomicInteger counter = invocationsCounter.get();
if (counter == null) {
counter = new AtomicInteger( 0 );
invocationsCounter.set( counter );
}
counter.incrementAndGet();
try {
return internalExecute( executable, ctx );
} finally {
if (counter.decrementAndGet() == 0) {
invocationsCounter.remove();
}
}
}
protected RequestContext internalExecute(Executable executable, RequestContext ctx) {
try {
executeNext(executable, ctx);
return ctx;
} catch (Throwable ex) {
// in case there is another interceptor of this type in the stack don't handle it here
if (hasInterceptorInStack() || executionErrorManager == null) {
throw ex;
}
executionErrorManager.getHandler().handle(ex);
throw ex;
}
}
protected boolean hasInterceptorInStack() {
return invocationsCounter.get().get() > 1;
}
}