com.developmentsprint.spring.breaker.annotations.CircuitBreakerConfigurationSelector.java Source code

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Here is the source code for com.developmentsprint.spring.breaker.annotations.CircuitBreakerConfigurationSelector.java

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/**
 * Copyright 2014 Development Sprint, LLC.
 * 
 * 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.developmentsprint.spring.breaker.annotations;

import org.springframework.context.annotation.AdviceMode;
import org.springframework.context.annotation.AdviceModeImportSelector;
import org.springframework.context.annotation.AutoProxyRegistrar;

/**
 * Selects which implementation of {@link AbstractCircuitBreakerConfiguration} should be used based on the value of {@link EnableCircuitBreakers#mode} on the
 * importing {@code @Configuration} class.
 * 
 * @author Todd Orr
 * @since 1.0
 * @see EnableCircuitBreakers
 * @see ProxyCircuitBreakerConfiguration
 */
public class CircuitBreakerConfigurationSelector extends AdviceModeImportSelector<EnableCircuitBreakers> {

    private static final String CIRCUIT_BREAKER_ASPECT_CONFIGURATION_CLASS_NAME = "com.developmentsprint.spring.breaker.aspectj.AspectJCircuitBreakerConfiguration";

    /**
     * {@inheritDoc}
     * 
     * @return {@link ProxyCircuitBreakerConfiguration} or {@code AspectJCircuitBreakerConfiguration} for {@code PROXY} and {@code ASPECTJ} values of
     *         {@link EnableCircuitBreakers#mode()}, respectively
     */
    @Override
    public String[] selectImports(AdviceMode adviceMode) {
        switch (adviceMode) {
        case PROXY:
            return new String[] { AutoProxyRegistrar.class.getName(),
                    ProxyCircuitBreakerConfiguration.class.getName() };
        case ASPECTJ:
            return new String[] { CIRCUIT_BREAKER_ASPECT_CONFIGURATION_CLASS_NAME };
        default:
            return null;
        }
    }

}