Add ?ingress query parameter on /v1/health/connect

Refactor boolean query parameter logic from ?passing value to re-use
with ingress

agent/health_endpoint.go

@@ -3,6 +3,7 @@ package agent
 import (
 	"fmt"
 	"net/http"
+	"net/url"
 	"strconv"
 	"strings"
 
@@ -186,6 +187,20 @@ func (s *HTTPServer) healthServiceNodes(resp http.ResponseWriter, req *http.Requ
 		prefix = "/v1/health/connect/"
 	}
 
+	// Check for ingress request only when requesting connect services
+	if connect {
+		ingress, err := getBoolQueryParam(params, "ingress")
+		if err != nil {
+			resp.WriteHeader(http.StatusBadRequest)
+			fmt.Fprint(resp, "Invalid value for ?ingress")
+			return nil, nil
+		}
+		if ingress {
+			args.Connect = false
+			args.Ingress = true
+		}
+	}
+
 	// Pull out the service name
 	args.ServiceName = strings.TrimPrefix(req.URL.Path, prefix)
 	if args.ServiceName == "" {
@@ -224,26 +239,15 @@ func (s *HTTPServer) healthServiceNodes(resp http.ResponseWriter, req *http.Requ
 	out.ConsistencyLevel = args.QueryOptions.ConsistencyLevel()
 
 	// Filter to only passing if specified
-	if _, ok := params[api.HealthPassing]; ok {
-		val := params.Get(api.HealthPassing)
-		// Backwards-compat to allow users to specify ?passing without a value. This
-		// should be removed in Consul 0.10.
-		var filter bool
-		if val == "" {
-			filter = true
-		} else {
-			var err error
-			filter, err = strconv.ParseBool(val)
-			if err != nil {
-				resp.WriteHeader(http.StatusBadRequest)
-				fmt.Fprint(resp, "Invalid value for ?passing")
-				return nil, nil
-			}
-		}
+	filter, err := getBoolQueryParam(params, api.HealthPassing)
+	if err != nil {
+		resp.WriteHeader(http.StatusBadRequest)
+		fmt.Fprint(resp, "Invalid value for ?passing")
+		return nil, nil
+	}
 
-		if filter {
-			out.Nodes = filterNonPassing(out.Nodes)
-		}
+	if filter {
+		out.Nodes = filterNonPassing(out.Nodes)
 	}
 
 	// Translate addresses after filtering so we don't waste effort.
@@ -273,6 +277,27 @@ func (s *HTTPServer) healthServiceNodes(resp http.ResponseWriter, req *http.Requ
 	return out.Nodes, nil
 }
 
+func getBoolQueryParam(params url.Values, key string) (bool, error) {
+	var param bool
+	if _, ok := params[key]; ok {
+		val := params.Get(key)
+		// Orginally a comment declared this check should be removed after Consul
+		// 0.10, to no longer support using ?passing without a value. However, I
+		// think this is a reasonable experience for a user and so am keeping it
+		// here.
+		if val == "" {
+			param = true
+		} else {
+			var err error
+			param, err = strconv.ParseBool(val)
+			if err != nil {
+				return false, err
+			}
+		}
+	}
+	return param, nil
+}
+
 // filterNonPassing is used to filter out any nodes that have check that are not passing
 func filterNonPassing(nodes structs.CheckServiceNodes) structs.CheckServiceNodes {
 	n := len(nodes)

agent/health_endpoint_test.go

@@ -1139,6 +1139,105 @@ func TestHealthConnectServiceNodes(t *testing.T) {
 	assert.Len(nodes[0].Checks, 0)
 }
 
+func TestHealthConnectServiceNodes_Ingress(t *testing.T) {
+	t.Parallel()
+
+	a := NewTestAgent(t, "")
+	defer a.Shutdown()
+	testrpc.WaitForLeader(t, a.RPC, "dc1")
+
+	// Register gateway
+	gatewayArgs := structs.TestRegisterIngressGateway(t)
+	gatewayArgs.Service.Address = "127.0.0.27"
+	var out struct{}
+	require.NoError(t, a.RPC("Catalog.Register", gatewayArgs, &out))
+
+	args := structs.TestRegisterRequest(t)
+	require.NoError(t, a.RPC("Catalog.Register", args, &out))
+
+	// Associate service to gateway
+	cfgArgs := &structs.IngressGatewayConfigEntry{
+		Name: "ingress-gateway",
+		Kind: structs.IngressGateway,
+		Listeners: []structs.IngressListener{
+			{
+				Port:     8888,
+				Protocol: "tcp",
+				Services: []structs.IngressService{
+					{Name: args.Service.Service},
+				},
+			},
+		},
+	}
+
+	req := structs.ConfigEntryRequest{
+		Op:         structs.ConfigEntryUpsert,
+		Datacenter: "dc1",
+		Entry:      cfgArgs,
+	}
+	var outB bool
+	require.Nil(t, a.RPC("ConfigEntry.Apply", req, &outB))
+	require.True(t, outB)
+
+	t.Run("no_query_value", func(t *testing.T) {
+		assert := assert.New(t)
+		req, _ := http.NewRequest("GET", fmt.Sprintf(
+			"/v1/health/connect/%s?ingress", args.Service.Service), nil)
+		resp := httptest.NewRecorder()
+		obj, err := a.srv.HealthConnectServiceNodes(resp, req)
+		assert.Nil(err)
+		assertIndex(t, resp)
+
+		nodes := obj.(structs.CheckServiceNodes)
+		require.Len(t, nodes, 1)
+		require.Equal(t, structs.ServiceKindIngressGateway, nodes[0].Service.Kind)
+		require.Equal(t, gatewayArgs.Service.Address, nodes[0].Service.Address)
+		require.Equal(t, gatewayArgs.Service.Proxy, nodes[0].Service.Proxy)
+	})
+
+	t.Run("true_value", func(t *testing.T) {
+		assert := assert.New(t)
+		req, _ := http.NewRequest("GET", fmt.Sprintf(
+			"/v1/health/connect/%s?ingress=true", args.Service.Service), nil)
+		resp := httptest.NewRecorder()
+		obj, err := a.srv.HealthConnectServiceNodes(resp, req)
+		assert.Nil(err)
+		assertIndex(t, resp)
+
+		nodes := obj.(structs.CheckServiceNodes)
+		require.Len(t, nodes, 1)
+		require.Equal(t, structs.ServiceKindIngressGateway, nodes[0].Service.Kind)
+		require.Equal(t, gatewayArgs.Service.Address, nodes[0].Service.Address)
+		require.Equal(t, gatewayArgs.Service.Proxy, nodes[0].Service.Proxy)
+	})
+
+	t.Run("false_value", func(t *testing.T) {
+		assert := assert.New(t)
+		req, _ := http.NewRequest("GET", fmt.Sprintf(
+			"/v1/health/connect/%s?ingress=false", args.Service.Service), nil)
+		resp := httptest.NewRecorder()
+		obj, err := a.srv.HealthConnectServiceNodes(resp, req)
+		assert.Nil(err)
+		assertIndex(t, resp)
+
+		nodes := obj.(structs.CheckServiceNodes)
+		require.Len(t, nodes, 0)
+	})
+
+	t.Run("invalid_value", func(t *testing.T) {
+		assert := assert.New(t)
+		req, _ := http.NewRequest("GET", fmt.Sprintf(
+			"/v1/health/connect/%s?ingress=notabool", args.Service.Service), nil)
+		resp := httptest.NewRecorder()
+		_, err := a.srv.HealthConnectServiceNodes(resp, req)
+		assert.Equal(400, resp.Code)
+
+		body, err := ioutil.ReadAll(resp.Body)
+		assert.Nil(err)
+		assert.True(bytes.Contains(body, []byte("Invalid value for ?ingress")))
+	})
+}
+
 func TestHealthConnectServiceNodes_Filter(t *testing.T) {
 	t.Parallel()