Reusable proxies

config/configload/merge.go

@@ -214,6 +214,21 @@ func mergeServers(bodies []*hclsyntax.Body, proxies map[string]*hclsyntax.Block)
 								return nil, newMergeError(errUniqueLabels, subBlock)
 							}
 
+							if attr, ok := subBlock.Body.Attributes[proxy]; ok {
+								reference, err := attrStringValue(attr)
+								if err != nil {
+									return nil, err
+								}
+
+								delete(subBlock.Body.Attributes, proxy)
+
+								if proxyBlock, ok := proxies[reference]; !ok {
+									return nil, newMergeError(errMissingReferencedProxy, subBlock)
+								} else {
+									subBlock.Body.Blocks = append(subBlock.Body.Blocks, proxyBlock)
+								}
+							}
+
 							results[serverKey].apis[apiKey].endpoints[subBlock.Labels[0]] = subBlock
 						} else if subBlock.Type == errorHandler {
 							if err := absInBackends(subBlock); err != nil {

server/http_endpoints_test.go

@@ -979,6 +979,9 @@ func TestEndpoint_ReusableProxies(t *testing.T) {
 		{"/abcdef", "abcdef", 204},
 		{"/reuse", "abcdef", 204},
 		{"/default", "default", 204},
+		{"/api-abcdef", "abcdef", 204},
+		{"/api-reuse", "abcdef", 204},
+		{"/api-default", "default", 204},
 	} {
 		t.Run(tc.path, func(st *testing.T) {
 			h := test.New(st)

server/testdata/endpoints/18_couper.hcl

@@ -18,6 +18,28 @@ server "couper" {
       status = 204
     }
   }
+
+  api {
+    endpoint "/api-abcdef" {
+      proxy = "test"
+      response {
+        status = 204
+      }
+    }
+    endpoint "/api-reuse" {
+      proxy = "test"
+      response {
+        status = 204
+      }
+    }
+
+    endpoint "/api-default" {
+      proxy = "defaultName"
+      response {
+        status = 204
+      }
+    }
+  }
 }
 
 definitions {