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Spring framework @Async


Config on Spring boot

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.aop.interceptor.AsyncUncaughtExceptionHandler;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.AsyncConfigurer;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.lang.reflect.Method;
import java.util.concurrent.Executor;

@Configuration
@EnableAsync
public class SpringAsyncConfig implements AsyncConfigurer {

    @Bean(name = "threadPoolTaskExecutor")
    public Executor threadPoolTaskExecutor() {
        return new ThreadPoolTaskExecutor();
    }

    @Override
    public Executor getAsyncExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(2);
        executor.setMaxPoolSize(2);
        executor.setQueueCapacity(500);
        executor.setThreadNamePrefix("GithubLookup-");
        executor.initialize();
        return executor;
    }

    @Override
    public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
        return new CustomAsyncExceptionHandler();
    }

    public class CustomAsyncExceptionHandler implements AsyncUncaughtExceptionHandler {
        private Log log = LogFactory.getLog(this.getClass());

        @Override
        public void handleUncaughtException(
                Throwable throwable, Method method, Object... obj) {
            log.info("Exception message - " + throwable.getMessage());
            log.info("Method name - " + method.getName());
            for (Object param : obj) {
                log.info("Parameter value - " + param);
            }
        }
    }
}

Using Async with Service code

@Async("threadPoolTaskExecutor")
public void sendEmail(String email){
//code
}
#spring-framework (1) #async (1)
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