de.coderebell.failsafeactuator.service.CircuitBreakerRegistry.java Source code

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Here is the source code for de.coderebell.failsafeactuator.service.CircuitBreakerRegistry.java

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/**
 * The MIT License (MIT)
 * Copyright (c) 2016 Malte Pickhan
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package de.coderebell.failsafeactuator.service;

import net.jodah.failsafe.CircuitBreaker;
import org.springframework.stereotype.Component;
import org.springframework.util.Assert;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * Registry which holds a reference to registered circuit breakers.
 *
 * @author mpickhan on 29.06.16.
 */
@Component
public class CircuitBreakerRegistry {

    private static final Map<String, CircuitBreaker> concurrentBreakerMap = new ConcurrentHashMap<String, CircuitBreaker>();

    /**
     * Will put the {@link CircuitBreaker} into the registry. There is no check which avoids overwriting
     * of identifiers. Therefore be sure that your identifiers are unique, or you want to overwrite the
     * current {@link CircuitBreaker} which is registered with this identifier.
     *
     * @param breaker Which should be added
     * @param name    Which is used to identify the CircuitBreaker
     */
    void registerCircuitBreaker(final CircuitBreaker breaker, final String name) {
        Assert.hasText(name, "Name for circuitbreaker needs to be set");
        Assert.notNull(breaker, "Circuitbreaker to add, can't be null");

        CircuitBreaker replaced = concurrentBreakerMap.put(name, breaker);
        Assert.isNull(replaced, "There was an Circuit-Breaker registered already with name : " + name);
    }

    /**
     * Returns the {@link Map} with registered circuit breakers.
     *
     * @return
     */
    public Map<String, CircuitBreaker> getConcurrentBreakerMap() {
        return this.concurrentBreakerMap;
    }

}