序
ribbon的超时设置,只能按转发的serviceId来分的,无法像nginx那样直接在每个转发的链接里头设置超时时间。这里hack一下,实现url基本的ribbon超时时间设置。具体的思路就是重写RibbonApacheHttpRequest的toRequest方法,然后进行设置。
CustomRibbonApacheHttpRequest
public class CustomRibbonApacheHttpRequest extends RibbonApacheHttpRequest {
public CustomRibbonApacheHttpRequest(RibbonCommandContext context) {
super(context);
}
@Override
public HttpUriRequest toRequest(RequestConfig requestConfig) {
final RequestBuilder builder = RequestBuilder.create(this.context.getMethod());
builder.setUri(this.uri);
for (final String name : this.context.getHeaders().keySet()) {
final List<String> values = this.context.getHeaders().get(name);
for (final String value : values) {
builder.addHeader(name, value);
}
}
for (final String name : this.context.getParams().keySet()) {
final List<String> values = this.context.getParams().get(name);
for (final String value : values) {
builder.addParameter(name, value);
}
}
if (this.context.getRequestEntity() != null) {
final BasicHttpEntity entity;
entity = new BasicHttpEntity();
entity.setContent(this.context.getRequestEntity());
// if the entity contentLength isn't set, transfer-encoding will be set
// to chunked in org.apache.http.protocol.RequestContent. See gh-1042
if (this.context.getContentLength() != null) {
entity.setContentLength(this.context.getContentLength());
} else if ("GET".equals(this.context.getMethod())) {
entity.setContentLength(0);
}
builder.setEntity(entity);
}
customize(this.context.getRequestCustomizers(), builder);
//todo 这里处理个性的timeout信息
if(uri.getPath().equals("/review/timeout")){
RequestConfig.Builder configBuilder = RequestConfig.copy(builder.getConfig());
configBuilder.setConnectionRequestTimeout(30*1000);
configBuilder.setConnectTimeout(30*1000);
configBuilder.setSocketTimeout(30*1000);
builder.setConfig(configBuilder.build());
}else{
builder.setConfig(requestConfig);
}
return builder.build();
}
}
CustomHttpClientRibbonCommand
public class CustomHttpClientRibbonCommand extends HttpClientRibbonCommand {
public CustomHttpClientRibbonCommand(String commandKey, RibbonLoadBalancingHttpClient client, RibbonCommandContext context, ZuulProperties zuulProperties) {
super(commandKey, client, context, zuulProperties);
}
public CustomHttpClientRibbonCommand(String commandKey, RibbonLoadBalancingHttpClient client, RibbonCommandContext context, ZuulProperties zuulProperties, ZuulFallbackProvider zuulFallbackProvider) {
super(commandKey, client, context, zuulProperties, zuulFallbackProvider);
}
@Override
protected RibbonApacheHttpRequest createRequest() throws Exception {
RibbonApacheHttpRequest ribbonApacheHttpRequest = new CustomRibbonApacheHttpRequest(this.context);
return ribbonApacheHttpRequest;
}
}
CustomHttpClientRibbonCommandFactory
public class CustomHttpClientRibbonCommandFactory extends HttpClientRibbonCommandFactory{
private final SpringClientFactory clientFactory;
private final ZuulProperties zuulProperties;
public CustomHttpClientRibbonCommandFactory(SpringClientFactory clientFactory, ZuulProperties zuulProperties) {
super(clientFactory, zuulProperties);
this.clientFactory = clientFactory;
this.zuulProperties = zuulProperties;
}
public CustomHttpClientRibbonCommandFactory(SpringClientFactory clientFactory, ZuulProperties zuulProperties, Set<ZuulFallbackProvider> fallbackProviders) {
super(clientFactory, zuulProperties, fallbackProviders);
this.clientFactory = clientFactory;
this.zuulProperties = zuulProperties;
}
@Override
public HttpClientRibbonCommand create(RibbonCommandContext context) {
ZuulFallbackProvider zuulFallbackProvider = getFallbackProvider(context.getServiceId());
final String serviceId = context.getServiceId();
final RibbonLoadBalancingHttpClient client = this.clientFactory.getClient(
serviceId, RibbonLoadBalancingHttpClient.class);
client.setLoadBalancer(this.clientFactory.getLoadBalancer(serviceId));
return new CustomHttpClientRibbonCommand(serviceId, client, context, zuulProperties, zuulFallbackProvider);
}
}
配置
@Autowired(required = false)
private Set<ZuulFallbackProvider> zuulFallbackProviders = Collections.emptySet();
@Bean
@ConditionalOnMissingBean
public RibbonCommandFactory<?> ribbonCommandFactory(
SpringClientFactory clientFactory, ZuulProperties zuulProperties) {
return new CustomHttpClientRibbonCommandFactory(clientFactory, zuulProperties, zuulFallbackProviders);
}
网关的超时层级
zuul
zuul:
max:
host:
connections: 500
host:
socket-timeout-millis: 60000
connect-timeout-millis: 60000
ribbon
ribbon:
ReadTimeout: 10000
ConnectTimeout: 10000
MaxAutoRetries: 0
MaxAutoRetriesNextServer: 1
eureka:
enabled: true
hystrix
hystrix:
command:
default:
execution:
timeout:
enabled: true
isolation:
thread:
timeoutInMilliseconds: 60000
小结
走网关的话,有三层的超时时间,一个是zuul的,一个是ribbon的,还有一个是hystrix的。hystrix的超时设置,AbstractRibbonCommand这个类没有暴露设置hystrix的Setter方法出来,所以无法通过继承的方式来扩展。因此要自定义ribbon超时的话,需要这个超时时间是小于hystrix的,不然就提前被hystrix超时了,无法起到效果。
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