Spring Cloud Hystrix降级处理超时时间设置

Spring Cloud Hystrix降级处理超时时间设置

默认情况下调用接口能够触发Hystrix服务降级处理的超时时间是1000ms，我们可以通过HystrixCommandProperties类的源码查找到，

package com.netflix.hystrix;

import com.netflix.hystrix.strategy.properties.HystrixDynamicProperty;
import com.netflix.hystrix.strategy.properties.HystrixPropertiesChainedProperty;
import com.netflix.hystrix.strategy.properties.HystrixProperty;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public abstract class HystrixCommandProperties {
    private static final Logger logger = LoggerFactory.getLogger(HystrixCommandProperties.class);
    static final Integer default_metricsRollingStatisticalWindow = 10000;
    private static final Integer default_metricsRollingStatisticalWindowBuckets = 10;
    private static final Integer default_circuitBreakerRequestVolumeThreshold = 20;
    private static final Integer default_circuitBreakerSleepWindowInMilliseconds = 5000;
    private static final Integer default_circuitBreakerErrorThresholdPercentage = 50;
    private static final Boolean default_circuitBreakerForceOpen = false;
    static final Boolean default_circuitBreakerForceClosed = false;
    private static final Integer default_executionTimeoutInMilliseconds = 1000; <----!!这个 超时时间
    private static final Boolean default_executionTimeoutEnabled = true;
    private static final HystrixCommandProperties.ExecutionIsolationStrategy default_executionIsolationStrategy;
    private static final Boolean default_executionIsolationThreadInterruptOnTimeout;
    private static final Boolean default_executionIsolationThreadInterruptOnFutureCancel;
    private static final Boolean default_metricsRollingPercentileEnabled;
    private static final Boolean default_requestCacheEnabled;
    private static final Integer default_fallbackIsolationSemaphoreMaxConcurrentRequests;
    private static final Boolean default_fallbackEnabled;
    private static final Integer default_executionIsolationSemaphoreMaxConcurrentRequests;
    private static final Boolean default_requestLogEnabled;
    private static final Boolean default_circuitBreakerEnabled;
    private static final Integer default_metricsRollingPercentileWindow;
    private static final Integer default_metricsRollingPercentileWindowBuckets;
    private static final Integer default_metricsRollingPercentileBucketSize;
    private static final Integer default_metricsHealthSnapshotIntervalInMilliseconds;
    private final HystrixCommandKey key;
    private final HystrixProperty<Integer> circuitBreakerRequestVolumeThreshold;
    private final HystrixProperty<Integer> circuitBreakerSleepWindowInMilliseconds;
    private final HystrixProperty<Boolean> circuitBreakerEnabled;
    private final HystrixProperty<Integer> circuitBreakerErrorThresholdPercentage;
    private final HystrixProperty<Boolean> circuitBreakerForceOpen;
    private final HystrixProperty<Boolean> circuitBreakerForceClosed;
    private final HystrixProperty<HystrixCommandProperties.ExecutionIsolationStrategy> executionIsolationStrategy;
    private final HystrixProperty<Integer> executionTimeoutInMilliseconds;
    private final HystrixProperty<Boolean> executionTimeoutEnabled;
    private final HystrixProperty<String> executionIsolationThreadPoolKeyOverride;
    private final HystrixProperty<Integer> executionIsolationSemaphoreMaxConcurrentRequests;
    private final HystrixProperty<Integer> fallbackIsolationSemaphoreMaxConcurrentRequests;
    private final HystrixProperty<Boolean> fallbackEnabled;
    private final HystrixProperty<Boolean> executionIsolationThreadInterruptOnTimeout;
    private final HystrixProperty<Boolean> executionIsolationThreadInterruptOnFutureCancel;
    private final HystrixProperty<Integer> metricsRollingStatisticalWindowInMilliseconds;
    private final HystrixProperty<Integer> metricsRollingStatisticalWindowBuckets;
    private final HystrixProperty<Boolean> metricsRollingPercentileEnabled;
    private final HystrixProperty<Integer> metricsRollingPercentileWindowInMilliseconds;
    private final HystrixProperty<Integer> metricsRollingPercentileWindowBuckets;
    private final HystrixProperty<Integer> metricsRollingPercentileBucketSize;
    private final HystrixProperty<Integer> metricsHealthSnapshotIntervalInMilliseconds;
    private final HystrixProperty<Boolean> requestLogEnabled;
    private final HystrixProperty<Boolean> requestCacheEnabled;

根据这个

protected HystrixCommandProperties(HystrixCommandKey key, HystrixCommandProperties.Setter builder, String propertyPrefix) {
        this.key = key;
        this.circuitBreakerEnabled = getProperty(propertyPrefix, key, "circuitBreaker.enabled", builder.getCircuitBreakerEnabled(), default_circuitBreakerEnabled);
        this.circuitBreakerRequestVolumeThreshold = getProperty(propertyPrefix, key, "circuitBreaker.requestVolumeThreshold", builder.getCircuitBreakerRequestVolumeThreshold(), default_circuitBreakerRequestVolumeThreshold);
        this.circuitBreakerSleepWindowInMilliseconds = getProperty(propertyPrefix, key, "circuitBreaker.sleepWindowInMilliseconds", builder.getCircuitBreakerSleepWindowInMilliseconds(), default_circuitBreakerSleepWindowInMilliseconds);
        this.circuitBreakerErrorThresholdPercentage = getProperty(propertyPrefix, key, "circuitBreaker.errorThresholdPercentage", builder.getCircuitBreakerErrorThresholdPercentage(), default_circuitBreakerErrorThresholdPercentage);
        this.circuitBreakerForceOpen = getProperty(propertyPrefix, key, "circuitBreaker.forceOpen", builder.getCircuitBreakerForceOpen(), default_circuitBreakerForceOpen);
        this.circuitBreakerForceClosed = getProperty(propertyPrefix, key, "circuitBreaker.forceClosed", builder.getCircuitBreakerForceClosed(), default_circuitBreakerForceClosed);
        this.executionIsolationStrategy = getProperty(propertyPrefix, key, "execution.isolation.strategy", builder.getExecutionIsolationStrategy(), default_executionIsolationStrategy);
        this.executionTimeoutInMilliseconds = getProperty(propertyPrefix, key, "execution.isolation.thread.timeoutInMilliseconds", builder.getExecutionIsolationThreadTimeoutInMilliseconds(), default_executionTimeoutInMilliseconds);
        this.executionTimeoutEnabled = getProperty(propertyPrefix, key, "execution.timeout.enabled", builder.getExecutionTimeoutEnabled(), default_executionTimeoutEnabled);
        this.executionIsolationThreadInterruptOnTimeout = getProperty(propertyPrefix, key, "execution.isolation.thread.interruptOnTimeout", builder.getExecutionIsolationThreadInterruptOnTimeout(), default_executionIsolationThreadInterruptOnTimeout);
        this.executionIsolationThreadInterruptOnFutureCancel = getProperty(propertyPrefix, key, "execution.isolation.thread.interruptOnFutureCancel", builder.getExecutionIsolationThreadInterruptOnFutureCancel(), default_executionIsolationThreadInterruptOnFutureCancel);
        this.executionIsolationSemaphoreMaxConcurrentRequests = getProperty(propertyPrefix, key, "execution.isolation.semaphore.maxConcurrentRequests", builder.getExecutionIsolationSemaphoreMaxConcurrentRequests(), default_executionIsolationSemaphoreMaxConcurrentRequests);
        this.fallbackIsolationSemaphoreMaxConcurrentRequests = getProperty(propertyPrefix, key, "fallback.isolation.semaphore.maxConcurrentRequests", builder.getFallbackIsolationSemaphoreMaxConcurrentRequests(), default_fallbackIsolationSemaphoreMaxConcurrentRequests);
        this.fallbackEnabled = getProperty(propertyPrefix, key, "fallback.enabled", builder.getFallbackEnabled(), default_fallbackEnabled);
        this.metricsRollingStatisticalWindowInMilliseconds = getProperty(propertyPrefix, key, "metrics.rollingStats.timeInMilliseconds", builder.getMetricsRollingStatisticalWindowInMilliseconds(), default_metricsRollingStatisticalWindow);
        this.metricsRollingStatisticalWindowBuckets = getProperty(propertyPrefix, key, "metrics.rollingStats.numBuckets", builder.getMetricsRollingStatisticalWindowBuckets(), default_metricsRollingStatisticalWindowBuckets);
        this.metricsRollingPercentileEnabled = getProperty(propertyPrefix, key, "metrics.rollingPercentile.enabled", builder.getMetricsRollingPercentileEnabled(), default_metricsRollingPercentileEnabled);
        this.metricsRollingPercentileWindowInMilliseconds = getProperty(propertyPrefix, key, "metrics.rollingPercentile.timeInMilliseconds", builder.getMetricsRollingPercentileWindowInMilliseconds(), default_metricsRollingPercentileWindow);
        this.metricsRollingPercentileWindowBuckets = getProperty(propertyPrefix, key, "metrics.rollingPercentile.numBuckets", builder.getMetricsRollingPercentileWindowBuckets(), default_metricsRollingPercentileWindowBuckets);
        this.metricsRollingPercentileBucketSize = getProperty(propertyPrefix, key, "metrics.rollingPercentile.bucketSize", builder.getMetricsRollingPercentileBucketSize(), default_metricsRollingPercentileBucketSize);
        this.metricsHealthSnapshotIntervalInMilliseconds = getProperty(propertyPrefix, key, "metrics.healthSnapshot.intervalInMilliseconds", builder.getMetricsHealthSnapshotIntervalInMilliseconds(), default_metricsHealthSnapshotIntervalInMilliseconds);
        this.requestCacheEnabled = getProperty(propertyPrefix, key, "requestCache.enabled", builder.getRequestCacheEnabled(), default_requestCacheEnabled);
        this.requestLogEnabled = getProperty(propertyPrefix, key, "requestLog.enabled", builder.getRequestLogEnabled(), default_requestLogEnabled);
        this.executionIsolationThreadPoolKeyOverride = HystrixPropertiesChainedProperty.forString().add(propertyPrefix + ".command." + key.name() + ".threadPoolKeyOverride", (Object)null).build();
    }

确认通过配置属性"execution.isolation.thread.timeoutInMilliseconds" 可以使超时时间属性生效

this.executionTimeoutInMilliseconds = getProperty(propertyPrefix, key, "execution.isolation.thread.timeoutInMilliseconds", builder.getExecutionIsolationThreadTimeoutInMilliseconds(), default_executionTimeoutInMilliseconds);

代码中设置为

@HystrixCommand(fallbackMethod = "timeout_handler", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "1500")
    })