七.Hystrix Timeout机制

HystrixCommandProperties.Setter().withExecutionTimeoutInMilliseconds(int value)

HystrixCommandProperties.Setter().withExecutionTimeoutEnabled(boolean value)

/**
 * 获取商品信息
 * @author 张三丰
 *
 */
public class GetProductInfoCommand extends HystrixCommand<ProductInfo> {

    private Long productId;
    
    public GetProductInfoCommand(Long productId) {
        super(Setter.withGroupKey(HystrixCommandGroupKey.Factory.asKey("ProductInfoService"))
                .andCommandKey(HystrixCommandKey.Factory.asKey("GetProductInfoCommand"))
                .andThreadPoolKey(HystrixThreadPoolKey.Factory.asKey("GetProductInfoPool"))
                .andThreadPoolPropertiesDefaults(HystrixThreadPoolProperties.Setter()
                        .withCoreSize(10)
                        .withMaxQueueSize(12)
                        .withQueueSizeRejectionThreshold(15)) 
                .andCommandPropertiesDefaults(HystrixCommandProperties.Setter()
                        .withCircuitBreakerRequestVolumeThreshold(30)
                        .withCircuitBreakerErrorThresholdPercentage(40)
                        .withCircuitBreakerSleepWindowInMilliseconds(3000)
                        .withExecutionTimeoutInMilliseconds(500)//超时时间500毫秒
                        .withFallbackIsolationSemaphoreMaxConcurrentRequests(30))  
                );  
        this.productId = productId;
    }
    
    @Override
    protected ProductInfo run() throws Exception {
        System.out.println("调用接口，查询商品数据，productId=" + productId); 
        
        
        if(productId.equals(-2L)) {
            Thread.sleep(3000);  
        }
        

        return JSONObject.parseObject("数据", ProductInfo.class);  
    }

    
    @Override
    protected ProductInfo getFallback() {
        ProductInfo productInfo = new ProductInfo();
        productInfo.setName("降级商品");  
        return productInfo;
    }
    
}