/**
* Copyright 2012 Netflix, Inc.
*
* 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.netflix.hystrix.contrib.javanica.command;
import com.google.common.collect.ImmutableSet;
import rx.Completable;
import rx.Observable;
import rx.Single;
import java.util.Set;
import java.util.concurrent.Future;
/**
* Specifies executions types.
*/
public enum ExecutionType {
/**
* Used for asynchronous execution of command.
*/
ASYNCHRONOUS,
/**
* Used for synchronous execution of command.
*/
SYNCHRONOUS,
/**
* Reactive execution (asynchronous callback).
*/
OBSERVABLE;
// RX types
private static final Set<? extends Class> RX_TYPES = ImmutableSet.of(Observable.class, Single.class, Completable.class);
/**
* Gets execution type for specified class type.
* @param type the type
* @return the execution type {@link ExecutionType}
*/
public static ExecutionType getExecutionType(Class<?> type) {
if (Future.class.isAssignableFrom(type)) {
return ExecutionType.ASYNCHRONOUS;
} else if (isRxType(type)) {
return ExecutionType.OBSERVABLE;
} else {
return ExecutionType.SYNCHRONOUS;
}
}
private static boolean isRxType(Class<?> cl) {
for (Class<?> rxType : RX_TYPES) {
if (rxType.isAssignableFrom(cl)) {
return true;
}
}
return false;
}
}