Set routeId on configurations from route definitions.

fixes gh-1160

spring-cloud-gateway-core/src/main/java/org/springframework/cloud/gateway/route/RouteDefinitionRouteLocator.java

@@ -41,6 +41,7 @@ import org.springframework.cloud.gateway.handler.AsyncPredicate;
 import org.springframework.cloud.gateway.handler.predicate.PredicateDefinition;
 import org.springframework.cloud.gateway.handler.predicate.RoutePredicateFactory;
 import org.springframework.cloud.gateway.support.ConfigurationUtils;
+import org.springframework.cloud.gateway.support.HasRouteId;
 import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.context.ApplicationEventPublisherAware;
 import org.springframework.core.Ordered;
@@ -173,6 +174,13 @@ public class RouteDefinitionRouteLocator
 			ConfigurationUtils.bind(configuration, properties,
 					factory.shortcutFieldPrefix(), definition.getName(), validator);
 
+			// some filters require routeId
+			// TODO: is there a better place to apply this?
+			if (configuration instanceof HasRouteId) {
+				HasRouteId hasRouteId = (HasRouteId) configuration;
+				hasRouteId.setRouteId(id);
+			}
+
 			GatewayFilter gatewayFilter = factory.apply(configuration);
 			if (this.publisher != null) {
 				this.publisher.publishEvent(new FilterArgsEvent(this, id, properties));

spring-cloud-gateway-core/src/test/java/org/springframework/cloud/gateway/filter/factory/RetryGatewayFilterFactoryIntegrationTests.java

@@ -84,6 +84,14 @@ public class RetryGatewayFilterFactoryIntegrationTests extends BaseWebClientTest
 
 	@Test
 	public void retryFilterPost() {
+		testClient.post().uri("/retrypost?key=postconfig&expectedbody=HelloConfig")
+				.header(HttpHeaders.HOST, "www.retrypostconfig.org")
+				.syncBody("HelloConfig").exchange().expectStatus().isOk()
+				.expectBody(String.class).isEqualTo("3");
+	}
+
+	@Test
+	public void retryFilterPostJavaDsl() {
 		testClient.post().uri("/retrypost?key=post&expectedbody=Hello")
 				.header(HttpHeaders.HOST, "www.retryjava.org").syncBody("Hello")
 				.exchange().expectStatus().isOk().expectBody(String.class).isEqualTo("3");
@@ -131,7 +139,8 @@ public class RetryGatewayFilterFactoryIntegrationTests extends BaseWebClientTest
 		@RequestMapping("/httpbin/retrypost")
 		public ResponseEntity<String> retry(@RequestParam("key") String key,
 				@RequestParam(name = "count", defaultValue = "3") int count,
-				@RequestParam("expectedbody") String expectedbody, @RequestBody String body) {
+				@RequestParam("expectedbody") String expectedbody,
+				@RequestBody String body) {
 			ResponseEntity<String> response = retry(key, count);
 			if (!expectedbody.equals(body)) {
 				AtomicInteger num = getCount(key);

spring-cloud-gateway-core/src/test/resources/application.yml

@@ -251,6 +251,16 @@ spring:
         filters:
         - Retry
 
+        # =====================================
+      - id: retry_post_test
+        uri: ${test.uri}
+        predicates:
+        - Host=**.retrypostconfig.org
+        filters:
+        - name: Retry
+          args:
+            methods: GET,POST
+
       # =====================================
       - id: secure_headers_test
         uri: ${test.uri}