Spring Cloud Gateway : How to pass params to custom filter












0















I have a custom filter defined in my application.yml. I need to take some more parameters from that filter definition in YAML, so that I can perform a logic inside my custom filter. I have multiple such routes defined wherein the filter parameters differs. The problem I am facing is, not able to read the values specified in YAML file.



application.yml ---

spring:
cloud:
gateway:
routes:
- id: test_route
uri: https://api.rangon.pi
predicates:
- Path=/api/staticdata/rattlefeed*
filters:
- AddRequestHeader=X-Y-Host, rangon
- TestGatewayFilter=admin, XY8382, basic


//Is there any way to get "admin, XY8382, basic" in my custom filter class



My filter class



@Component
public class TestGatewayFilter implements
GatewayFilterFactory<TestGatewayFilter.Config> {

@Override
public GatewayFilter apply(Config config) {
// grab configuration from Config object

return (exchange, chain) -> {
Route r = (Route) exchange.getAttributes().get(ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR);

Route route = exchange.getAttribute(ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR);
// ServerWebExchange route =
// exchange.getAttribute(ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR);
// List<GatewayFilter> list = r.getFilters();

GatewayFilter gwf = r.getFilters().get(r.getFilters().size() - 1);

Builder builder = exchange.getRequest().mutate();
// use builder to manipulate the request

return chain.filter(exchange.mutate().build());
};
}

public Config newConfig() {

Config c = new Config();
return c;
}

public static class Config {
// Put the configuration properties for your filter here

}

}









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    0















    I have a custom filter defined in my application.yml. I need to take some more parameters from that filter definition in YAML, so that I can perform a logic inside my custom filter. I have multiple such routes defined wherein the filter parameters differs. The problem I am facing is, not able to read the values specified in YAML file.



    application.yml ---

    spring:
    cloud:
    gateway:
    routes:
    - id: test_route
    uri: https://api.rangon.pi
    predicates:
    - Path=/api/staticdata/rattlefeed*
    filters:
    - AddRequestHeader=X-Y-Host, rangon
    - TestGatewayFilter=admin, XY8382, basic


    //Is there any way to get "admin, XY8382, basic" in my custom filter class



    My filter class



    @Component
    public class TestGatewayFilter implements
    GatewayFilterFactory<TestGatewayFilter.Config> {

    @Override
    public GatewayFilter apply(Config config) {
    // grab configuration from Config object

    return (exchange, chain) -> {
    Route r = (Route) exchange.getAttributes().get(ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR);

    Route route = exchange.getAttribute(ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR);
    // ServerWebExchange route =
    // exchange.getAttribute(ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR);
    // List<GatewayFilter> list = r.getFilters();

    GatewayFilter gwf = r.getFilters().get(r.getFilters().size() - 1);

    Builder builder = exchange.getRequest().mutate();
    // use builder to manipulate the request

    return chain.filter(exchange.mutate().build());
    };
    }

    public Config newConfig() {

    Config c = new Config();
    return c;
    }

    public static class Config {
    // Put the configuration properties for your filter here

    }

    }









    share|improve this question



























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      I have a custom filter defined in my application.yml. I need to take some more parameters from that filter definition in YAML, so that I can perform a logic inside my custom filter. I have multiple such routes defined wherein the filter parameters differs. The problem I am facing is, not able to read the values specified in YAML file.



      application.yml ---

      spring:
      cloud:
      gateway:
      routes:
      - id: test_route
      uri: https://api.rangon.pi
      predicates:
      - Path=/api/staticdata/rattlefeed*
      filters:
      - AddRequestHeader=X-Y-Host, rangon
      - TestGatewayFilter=admin, XY8382, basic


      //Is there any way to get "admin, XY8382, basic" in my custom filter class



      My filter class



      @Component
      public class TestGatewayFilter implements
      GatewayFilterFactory<TestGatewayFilter.Config> {

      @Override
      public GatewayFilter apply(Config config) {
      // grab configuration from Config object

      return (exchange, chain) -> {
      Route r = (Route) exchange.getAttributes().get(ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR);

      Route route = exchange.getAttribute(ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR);
      // ServerWebExchange route =
      // exchange.getAttribute(ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR);
      // List<GatewayFilter> list = r.getFilters();

      GatewayFilter gwf = r.getFilters().get(r.getFilters().size() - 1);

      Builder builder = exchange.getRequest().mutate();
      // use builder to manipulate the request

      return chain.filter(exchange.mutate().build());
      };
      }

      public Config newConfig() {

      Config c = new Config();
      return c;
      }

      public static class Config {
      // Put the configuration properties for your filter here

      }

      }









      share|improve this question
















      I have a custom filter defined in my application.yml. I need to take some more parameters from that filter definition in YAML, so that I can perform a logic inside my custom filter. I have multiple such routes defined wherein the filter parameters differs. The problem I am facing is, not able to read the values specified in YAML file.



      application.yml ---

      spring:
      cloud:
      gateway:
      routes:
      - id: test_route
      uri: https://api.rangon.pi
      predicates:
      - Path=/api/staticdata/rattlefeed*
      filters:
      - AddRequestHeader=X-Y-Host, rangon
      - TestGatewayFilter=admin, XY8382, basic


      //Is there any way to get "admin, XY8382, basic" in my custom filter class



      My filter class



      @Component
      public class TestGatewayFilter implements
      GatewayFilterFactory<TestGatewayFilter.Config> {

      @Override
      public GatewayFilter apply(Config config) {
      // grab configuration from Config object

      return (exchange, chain) -> {
      Route r = (Route) exchange.getAttributes().get(ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR);

      Route route = exchange.getAttribute(ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR);
      // ServerWebExchange route =
      // exchange.getAttribute(ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR);
      // List<GatewayFilter> list = r.getFilters();

      GatewayFilter gwf = r.getFilters().get(r.getFilters().size() - 1);

      Builder builder = exchange.getRequest().mutate();
      // use builder to manipulate the request

      return chain.filter(exchange.mutate().build());
      };
      }

      public Config newConfig() {

      Config c = new Config();
      return c;
      }

      public static class Config {
      // Put the configuration properties for your filter here

      }

      }






      spring cloud gateway






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      edited Nov 29 '18 at 14:45









      k32y

      1339




      1339










      asked Nov 25 '18 at 7:49









      PlutoPluto

      6816




      6816
























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