juplo.de Git - demos/testing/blob - src/main/java/de/juplo/demo/RestController.java

   1 package de.juplo.demo;
   2
   3
   4 import org.springframework.http.MediaType;
   5 import org.springframework.web.bind.annotation.GetMapping;
   6 import org.springframework.web.bind.annotation.RequestParam;
   7 import org.springframework.web.reactive.function.client.WebClientResponseException;
   8 import org.springframework.web.reactive.function.client.WebClientResponseException.NotFound;
   9 import reactor.core.publisher.Mono;
  10
  11
  12 /**
  13  * Fetches and returns data from a remote-webserver.
  14  * @author Kai Moritz
  15  */
  16 @org.springframework.web.bind.annotation.RestController
  17 public class RestController
  18 {
  19   RemoteContentService service;
  20
  21
  22   public RestController(RemoteContentService service)
  23   {
  24     this.service = service;
  25   }
  26
  27
  28   @GetMapping(path = { "", "/" }, produces = MediaType.TEXT_PLAIN_VALUE)
  29   public Mono<String> fetch(@RequestParam String path)
  30   {
  31     return
  32         service
  33             .getRemoteText(path)
  34             .onErrorResume(t ->
  35             {
  36               if(t.getClass().equals(NotFound.class))
  37                 return Mono.error(t);
  38               if(!(t instanceof WebClientResponseException))
  39                 return
  40                     Mono.error(
  41                         WebClientResponseException.create(
  42                             500,
  43                             "Internal Server Error - Cause: " + t.getMessage(),
  44                             null,
  45                             null,
  46                             null));
  47
  48               return
  49                   Mono.error(
  50                       WebClientResponseException.create(
  51                           503,
  52                           "Service Unavailable - Cause: " + t.getMessage(),
  53                           null,
  54                           null,
  55                           null));
  56             });
  57   }
  58 }