HystrixTimeout设置小记

最新推荐文章于 2024-03-17 17:45:05 发布

whatzhang007

最新推荐文章于 2024-03-17 17:45:05 发布

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分类专栏： # Spring Cloud 文章标签： hystrix ribbon timeout zuul HystrixTimeout

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源码如下，看完包会

protected static HystrixCommandProperties.Setter createSetter(IClientConfig config,
			String commandKey, ZuulProperties zuulProperties) {
	//获取HystrixTimeout，设置HystrixCommand的Setter
	int hystrixTimeout = getHystrixTimeout(config, commandKey);
	return HystrixCommandProperties.Setter()
			.withExecutionIsolationStrategy(
					zuulProperties.getRibbonIsolationStrategy())
			.withExecutionTimeoutInMilliseconds(hystrixTimeout);
}

protected static int getHystrixTimeout(IClientConfig config, String commandKey) {
	int ribbonTimeout = getRibbonTimeout(config, commandKey);
	DynamicPropertyFactory dynamicPropertyFactory = DynamicPropertyFactory
			.getInstance();
	int defaultHystrixTimeout = dynamicPropertyFactory.getIntProperty(
			"hystrix.command.default.execution.isolation.thread.timeoutInMilliseconds",
			0).get();
	int commandHystrixTimeout = dynamicPropertyFactory
			.getIntProperty("hystrix.command." + commandKey
					+ ".execution.isolation.thread.timeoutInMilliseconds", 0)
			.get();
	int hystrixTimeout;
	if (commandHystrixTimeout > 0) {
		hystrixTimeout = commandHystrixTimeout;
	}
	else if (defaultHystrixTimeout > 0) {
		hystrixTimeout = defaultHystrixTimeout;
	}
	else {
		hystrixTimeout = ribbonTimeout;
	}
	if (hystrixTimeout < ribbonTimeout) {
		LOGGER.warn("The Hystrix timeout of " + hystrixTimeout + "ms for the command "
				+ commandKey
				+ " is set lower than the combination of the Ribbon read and connect timeout, "
				+ ribbonTimeout + "ms.");
	}
	return hystrixTimeout;
}

protected static int getRibbonTimeout(IClientConfig config, String commandKey) {
	int ribbonTimeout;
	if (config == null) {
		ribbonTimeout = RibbonClientConfiguration.DEFAULT_READ_TIMEOUT
				+ RibbonClientConfiguration.DEFAULT_CONNECT_TIMEOUT;
	}
	else {
		int ribbonReadTimeout = getTimeout(config, commandKey, "ReadTimeout",
				IClientConfigKey.Keys.ReadTimeout,
				//默认1000
				RibbonClientConfiguration.DEFAULT_READ_TIMEOUT);
		int ribbonConnectTimeout = getTimeout(config, commandKey, "ConnectTimeout",
				IClientConfigKey.Keys.ConnectTimeout,
				//默认1000
				RibbonClientConfiguration.DEFAULT_CONNECT_TIMEOUT);
		int maxAutoRetries = getTimeout(config, commandKey, "MaxAutoRetries",
				IClientConfigKey.Keys.MaxAutoRetries,
				//默认0
				DefaultClientConfigImpl.DEFAULT_MAX_AUTO_RETRIES);
		int maxAutoRetriesNextServer = getTimeout(config, commandKey,
				"MaxAutoRetriesNextServer",
				IClientConfigKey.Keys.MaxAutoRetriesNextServer,
				//默认1
				DefaultClientConfigImpl.DEFAULT_MAX_AUTO_RETRIES_NEXT_SERVER);
		ribbonTimeout = (ribbonReadTimeout + ribbonConnectTimeout)
				* (maxAutoRetries + 1) * (maxAutoRetriesNextServer + 1);
	}
	return ribbonTimeout;
}

private static int getTimeout(IClientConfig config, String commandKey,
		String property, IClientConfigKey<Integer> configKey, int defaultValue) {
	DynamicPropertyFactory dynamicPropertyFactory = DynamicPropertyFactory
			.getInstance();
	return dynamicPropertyFactory
			.getIntProperty(commandKey + "." + config.getNameSpace() + "." + property,
					config.get(configKey, defaultValue))
			.get();
}