标签：static tco iat ica 替换 blank 原因 aws stat
一、概述
Zuul本事是基于Hystrix和Ribbon等，默认会支持Hystrix的Command等
在Zuul给定的路由回路跳闸，可以通过创建一个类型为ZuulFallbackProvider的bean来提供回退响应。在此bean中，您需要指定回退的路由ID，并提供ClientHttpResponse作为回退。这是一个非常简单的ZuulFallbackProvider实现。
二、提供Hystrix路由回退
当Zuul中给定路由的电路被触发时，您可以通过创建一个类型为ZuulFallbackProvider的bean来提供回退响应。在此bean中，您需要指定回退的路由ID，并提供ClientHttpResponse作为回退。这是一个非常简单的ZuulFallbackProvider实现。
class MyFallbackProvider implements ZuulFallbackProvider { @Override public String getRoute() { return "customers"; } @Override public ClientHttpResponse fallbackResponse() { return new ClientHttpResponse() { @Override public HttpStatus getStatusCode() throws IOException { return HttpStatus.OK; } @Override public int getRawStatusCode() throws IOException { return 200; } @Override public String getStatusText() throws IOException { return "OK"; } @Override public void close() { } @Override public InputStream getBody() throws IOException { return new ByteArrayInputStream("fallback".getBytes()); } @Override public HttpHeaders getHeaders() { HttpHeaders headers = new HttpHeaders(); headers.setContentType(MediaType.APPLICATION_JSON); return headers; } }; } }
路由配置
zuul: routes: customers: /customers/**
如果您希望为所有路由提供默认回退，则可以创建类型为ZuulFallbackProvider的bean，并让getRoute方法返回*或null
class MyFallbackProvider implements ZuulFallbackProvider { @Override public String getRoute() { return "*"; } @Override public ClientHttpResponse fallbackResponse() { return new ClientHttpResponse() { @Override public HttpStatus getStatusCode() throws IOException { return HttpStatus.OK; } @Override public int getRawStatusCode() throws IOException { return 200; } @Override public String getStatusText() throws IOException { return "OK"; } @Override public void close() { } @Override public InputStream getBody() throws IOException { return new ByteArrayInputStream("fallback".getBytes()); } @Override public HttpHeaders getHeaders() { HttpHeaders headers = new HttpHeaders(); headers.setContentType(MediaType.APPLICATION_JSON); return headers; } }; } }
如果您想选择基于故障原因的响应，请使用FallbackProvider，它将替换未来版本中的ZuulFallbackProvder。
class MyFallbackProvider implements FallbackProvider { @Override public String getRoute() { return "*"; } @Override public ClientHttpResponse fallbackResponse(final Throwable cause) { if (cause instanceof HystrixTimeoutException) { return response(HttpStatus.GATEWAY_TIMEOUT); } else { return fallbackResponse(); } } @Override public ClientHttpResponse fallbackResponse() { return response(HttpStatus.INTERNAL_SERVER_ERROR); } private ClientHttpResponse response(final HttpStatus status) { return new ClientHttpResponse() { @Override public HttpStatus getStatusCode() throws IOException { return status; } @Override public int getRawStatusCode() throws IOException { return status.value(); } @Override public String getStatusText() throws IOException { return status.getReasonPhrase(); } @Override public void close() { } @Override public InputStream getBody() throws IOException { return new ByteArrayInputStream("fallback".getBytes()); } @Override public HttpHeaders getHeaders() { HttpHeaders headers = new HttpHeaders(); headers.setContentType(MediaType.APPLICATION_JSON); return headers; } }; } }
都是
0604-Zuul构建API Gateway-Zuul的回退
标签：static tco iat ica 替换 blank 原因 aws stat
原文地址：https://www.cnblogs.com/bjlhx/p/9011337.html
