cbee

Circuit Breaker pattern implementation for Java EE

cbee technologies

• Circuit Breaker Pattern - (Martin Fowler)
• Lombok Data and Builder pattern on POJO - (Lombok)
• Java CDI (Depedancy Injection & interception)

configuration

Add the below to you maven pom.xml

    <!-- cbee -->
    <dependency>
        <groupId>com.github.dabump</groupId>
        <artifactId>cbee</artifactId>
        <version>1.0.5</version>
    </dependency>

Add the following to your beans.xml

<interceptors>
    <class>com.github.dabump.cbee.circuitbreaker.CircuitBreakerInterceptor</class>
</interceptors>

usage

Around any method that you want to circuit break, add the @CircuitBreaker annotation

Simple Example with default values:

@CircuitBreaker
public void executeSomeLogic() {
    ...
}

Advanced Example (Used if upstream system throws Exceptions you do not want to react to and open the circuit):

@CircuitBreaker(scope="authentication", ignoredExceptions={MyExceptionNotToCircuitBreak.class, AnotherClass.class})
public SecurityCredentials authenticateUser(String username, String password) {
    ...
}

Custom values example

@CircuitBreaker(invocationTimeoutinMillis = 3000, failureThershold = 5, openStatementResetInMillies = 120000)
public boolean doLogic() {
    ...
}