Backport of [NET-5163] Support locality testing in consul-container into release/1.16.x (#18503)

backport of commit 61b7c0d76ff33f883dfad875d1a39bfd115b332b

Co-authored-by: Michael Zalimeni <michael.zalimeni@hashicorp.com>

sdk/testutil/retry/retry.go

@@ -216,6 +216,12 @@ func DefaultFailer() *Timer {
 	return &Timer{Timeout: 7 * time.Second, Wait: 25 * time.Millisecond}
 }
 
+// ThirtySeconds repeats an operation for thirty seconds and waits 500ms in between.
+// Best for known slower operations like waiting on eventually consistent state.
+func ThirtySeconds() *Timer {
+	return &Timer{Timeout: 30 * time.Second, Wait: 500 * time.Millisecond}
+}
+
 // TwoSeconds repeats an operation for two seconds and waits 25ms in between.
 func TwoSeconds() *Timer {
 	return &Timer{Timeout: 2 * time.Second, Wait: 25 * time.Millisecond}

test/integration/consul-container/libs/assert/service.go

@@ -216,7 +216,54 @@ func AssertFortioName(t *testing.T, urlbase string, name string, reqHost string)
 // client must be a custom http.Client
 func AssertFortioNameWithClient(t *testing.T, urlbase string, name string, reqHost string, client *http.Client) {
 	t.Helper()
-	var fortioNameRE = regexp.MustCompile(("\nFORTIO_NAME=(.+)\n"))
+	foundName, err := FortioNameWithClient(t, urlbase, name, reqHost, client)
+	require.NoError(t, err)
+	t.Logf("got response from server name %q expect %q", foundName, name)
+	assert.Equal(t, name, foundName)
+}
+
+// WaitForFortioName is a convenience function for [WaitForFortioNameWithClient], using a [cleanhttp.DefaultClient()]
+func WaitForFortioName(t *testing.T, r retry.Retryer, urlbase string, name string, reqHost string) {
+	t.Helper()
+	client := cleanhttp.DefaultClient()
+	WaitForFortioNameWithClient(t, r, urlbase, name, reqHost, client)
+}
+
+// WaitForFortioNameWithClient enables waiting for FortioNameWithClient to return a specific
+// value. It uses the provided Retryer to wait for the expected name and only fails when
+// retries are exhausted.
+//
+// This is useful when performing failovers in tests and in other eventual consistency
+// scenarios that may take multiple seconds to resolve.
+//
+// Note that the underlying FortioNameWithClient has its own retry for successfully making
+// an HTTP request, which will be counted against the timeout of the provided Retryer if it
+// is a Timer, or incorporated into each attempt if it is a Counter.
+func WaitForFortioNameWithClient(t *testing.T, r retry.Retryer, urlbase string, name string, reqHost string, client *http.Client) {
+	t.Helper()
+	retry.RunWith(r, t, func(r *retry.R) {
+		actual, err := FortioNameWithClient(r, urlbase, name, reqHost, client)
+		require.NoError(r, err)
+		if name != actual {
+			r.Errorf("name %s did not match expected %s", name, actual)
+		}
+	})
+}
+
+// FortioNameWithClient returns the `FORTIO_NAME` returned by the fortio service at
+// urlbase/debug. This can be used to validate that the client is sending traffic to
+// the right envoy proxy.
+//
+// If reqHost is set, the Host field of the HTTP request will be set to its value.
+//
+// It retries with timeout defaultHTTPTimeout and wait defaultHTTPWait.
+//
+// client must be a custom http.Client
+func FortioNameWithClient(t retry.Failer, urlbase string, name string, reqHost string, client *http.Client) (string, error) {
+	t.Helper()
+	var fortioNameRE = regexp.MustCompile("\nFORTIO_NAME=(.+)\n")
+	var body []byte
+
 	retry.RunWith(&retry.Timer{Timeout: defaultHTTPTimeout, Wait: defaultHTTPWait}, t, func(r *retry.R) {
 		fullurl := fmt.Sprintf("%s/debug?env=dump", urlbase)
 		req, err := http.NewRequest("GET", fullurl, nil)
@@ -236,16 +283,17 @@ func AssertFortioNameWithClient(t *testing.T, urlbase string, name string, reqHo
 			r.Fatalf("could not make request to %q: status %d", fullurl, resp.StatusCode)
 		}
 
-		body, err := io.ReadAll(resp.Body)
+		body, err = io.ReadAll(resp.Body)
 		if err != nil {
 			r.Fatalf("failed to read response body from %q: %v", fullurl, err)
 		}
-
-		m := fortioNameRE.FindStringSubmatch(string(body))
-		require.GreaterOrEqual(r, len(m), 2)
-		t.Logf("got response from server name %q expect %q", m[1], name)
-		assert.Equal(r, name, m[1])
 	})
+
+	m := fortioNameRE.FindStringSubmatch(string(body))
+	if len(m) < 2 {
+		return "", fmt.Errorf("fortio name not found %s", name)
+	}
+	return m[1], nil
 }
 
 // AssertContainerState validates service container status

test/integration/consul-container/libs/service/connect.go

@@ -163,8 +163,9 @@ func (g ConnectContainer) GetStatus() (string, error) {
 type SidecarConfig struct {
 	Name         string
 	ServiceID    string
-	Namespace    string
 	EnableTProxy bool
+	Namespace    string
+	Partition    string
 }
 
 // NewConnectService returns a container that runs envoy sidecar, launched by

test/integration/consul-container/libs/service/helpers.go

@@ -46,6 +46,8 @@ type ServiceOpts struct {
 	Checks       Checks
 	Connect      SidecarService
 	Namespace    string
+	Partition    string
+	Locality     *api.Locality
 }
 
 // createAndRegisterStaticServerAndSidecar register the services and launch static-server containers
@@ -71,6 +73,7 @@ func createAndRegisterStaticServerAndSidecar(node libcluster.Agent, httpPort int
 		Name:      fmt.Sprintf("%s-sidecar", svc.ID),
 		ServiceID: svc.ID,
 		Namespace: svc.Namespace,
+		Partition: svc.Partition,
 		EnableTProxy: svc.Connect != nil &&
 			svc.Connect.SidecarService != nil &&
 			svc.Connect.SidecarService.Proxy != nil &&
@@ -117,6 +120,8 @@ func CreateAndRegisterStaticServerAndSidecar(node libcluster.Agent, serviceOpts
 			},
 		},
 		Namespace: serviceOpts.Namespace,
+		Partition: serviceOpts.Partition,
+		Locality:  serviceOpts.Locality,
 		Meta:      serviceOpts.Meta,
 		Check:     &agentCheck,
 	}
@@ -144,7 +149,10 @@ func CreateAndRegisterStaticServerAndSidecarWithChecks(node libcluster.Agent, se
 				TTL:  serviceOpts.Checks.TTL,
 			},
 		},
-		Meta: serviceOpts.Meta,
+		Meta:      serviceOpts.Meta,
+		Namespace: serviceOpts.Namespace,
+		Partition: serviceOpts.Partition,
+		Locality:  serviceOpts.Locality,
 	}
 
 	return createAndRegisterStaticServerAndSidecar(node, serviceOpts.HTTPPort, serviceOpts.GRPCPort, req)
@@ -155,6 +163,7 @@ func CreateAndRegisterStaticClientSidecar(
 	peerName string,
 	localMeshGateway bool,
 	enableTProxy bool,
+	serviceOpts *ServiceOpts,
 ) (*ConnectContainer, error) {
 	// Do some trickery to ensure that partial completion is correctly torn
 	// down, but successful execution is not.
@@ -196,6 +205,27 @@ func CreateAndRegisterStaticClientSidecar(
 		},
 	}
 
+	// Set relevant fields for static client if opts are provided
+	if serviceOpts != nil {
+		if serviceOpts.Connect.Proxy.Mode != "" {
+			return nil, fmt.Errorf("this helper does not support directly setting connect proxy mode; use enableTProxy and/or localMeshGateway instead")
+		}
+		// These options are defaulted above, so only set them as overrides
+		if serviceOpts.Name != "" {
+			req.Name = serviceOpts.Name
+		}
+		if serviceOpts.HTTPPort != 0 {
+			req.Port = serviceOpts.HTTPPort
+		}
+		if serviceOpts.Connect.Port != 0 {
+			req.Connect.SidecarService.Port = serviceOpts.Connect.Port
+		}
+		req.Meta = serviceOpts.Meta
+		req.Namespace = serviceOpts.Namespace
+		req.Partition = serviceOpts.Partition
+		req.Locality = serviceOpts.Locality
+	}
+
 	if err := node.GetClient().Agent().ServiceRegister(req); err != nil {
 		return nil, err
 	}

test/integration/consul-container/libs/topology/peering_topology.go

@@ -151,7 +151,7 @@ func BasicPeeringTwoClustersSetup(
 
 		// Create a service and proxy instance
 		var err error
-		clientSidecarService, err = libservice.CreateAndRegisterStaticClientSidecar(clientNode, DialingPeerName, true, false)
+		clientSidecarService, err = libservice.CreateAndRegisterStaticClientSidecar(clientNode, DialingPeerName, true, false, nil)
 		require.NoError(t, err)
 
 		libassert.CatalogServiceExists(t, dialingClient, "static-client-sidecar-proxy", nil)

test/integration/consul-container/libs/topology/service_topology.go

@@ -45,7 +45,7 @@ func CreateServices(t *testing.T, cluster *libcluster.Cluster) (libservice.Servi
 	libassert.CatalogServiceExists(t, client, libservice.StaticServerServiceName, nil)
 
 	// Create a client proxy instance with the server as an upstream
-	clientConnectProxy, err := libservice.CreateAndRegisterStaticClientSidecar(node, "", false, false)
+	clientConnectProxy, err := libservice.CreateAndRegisterStaticClientSidecar(node, "", false, false, nil)
 	require.NoError(t, err)
 
 	libassert.CatalogServiceExists(t, client, fmt.Sprintf("%s-sidecar-proxy", libservice.StaticClientServiceName), nil)

test/integration/consul-container/test/envoy_extensions/ext_authz_test.go

@@ -110,7 +110,7 @@ func createServices(t *testing.T, cluster *libcluster.Cluster) libservice.Servic
 	libassert.CatalogServiceExists(t, client, libservice.StaticServerServiceName, nil)
 
 	// Create a client proxy instance with the server as an upstream
-	clientConnectProxy, err := libservice.CreateAndRegisterStaticClientSidecar(node, "", false, false)
+	clientConnectProxy, err := libservice.CreateAndRegisterStaticClientSidecar(node, "", false, false, nil)
 	require.NoError(t, err)
 
 	libassert.CatalogServiceExists(t, client, "static-client-sidecar-proxy", nil)

test/integration/consul-container/test/jwtauth/jwt_auth_test.go

@@ -130,7 +130,7 @@ func createServices(t *testing.T, cluster *libcluster.Cluster) libservice.Servic
 	libassert.CatalogServiceExists(t, client, libservice.StaticServerServiceName, apiOpts)
 
 	// Create a client proxy instance with the server as an upstream
-	clientConnectProxy, err := libservice.CreateAndRegisterStaticClientSidecar(node, "", false, false)
+	clientConnectProxy, err := libservice.CreateAndRegisterStaticClientSidecar(node, "", false, false, nil)
 	require.NoError(t, err)
 
 	libassert.CatalogServiceExists(t, client, "static-client-sidecar-proxy", apiOpts)

test/integration/consul-container/test/tproxy/tproxy_test.go

@@ -215,7 +215,7 @@ func createServices(t *testing.T, cluster *libcluster.Cluster) libservice.Servic
 		client := node.GetClient()
 
 		// Create a client proxy instance with the server as an upstream
-		clientConnectProxy, err := libservice.CreateAndRegisterStaticClientSidecar(node, "", false, true)
+		clientConnectProxy, err := libservice.CreateAndRegisterStaticClientSidecar(node, "", false, true, nil)
 		require.NoError(t, err)
 
 		libassert.CatalogServiceExists(t, client, "static-client-sidecar-proxy", nil)

test/integration/consul-container/test/upgrade/ingress_gateway_grpc_test.go

@@ -92,7 +92,7 @@ func TestIngressGateway_GRPC_UpgradeToTarget_fromLatest(t *testing.T) {
 	serverNodes := cluster.Servers()
 	require.NoError(t, err)
 	require.True(t, len(serverNodes) > 0)
-	staticClientSvcSidecar, err := libservice.CreateAndRegisterStaticClientSidecar(serverNodes[0], "", true, false)
+	staticClientSvcSidecar, err := libservice.CreateAndRegisterStaticClientSidecar(serverNodes[0], "", true, false, nil)
 	require.NoError(t, err)
 
 	tests := func(t *testing.T) {

test/integration/consul-container/test/upgrade/l7_traffic_management/resolver_default_subset_test.go

@@ -349,7 +349,7 @@ func setup(t *testing.T) (*libcluster.Cluster, libservice.Service, libservice.Se
 	require.NoError(t, err)
 
 	// Create a client proxy instance with the server as an upstream
-	staticClientProxy, err := libservice.CreateAndRegisterStaticClientSidecar(node, "", false, false)
+	staticClientProxy, err := libservice.CreateAndRegisterStaticClientSidecar(node, "", false, false, nil)
 	require.NoError(t, err)
 
 	require.NoError(t, err)

test/integration/consul-container/test/upgrade/peering/peering_control_plane_mgw_test.go

@@ -87,7 +87,7 @@ func TestPeering_ControlPlaneMGW(t *testing.T) {
 		"upstream_cx_total", 1)
 	require.NoError(t, accepting.Gateway.Start())
 
-	clientSidecarService, err := libservice.CreateAndRegisterStaticClientSidecar(dialingCluster.Servers()[0], libtopology.DialingPeerName, true, false)
+	clientSidecarService, err := libservice.CreateAndRegisterStaticClientSidecar(dialingCluster.Servers()[0], libtopology.DialingPeerName, true, false, nil)
 	require.NoError(t, err)
 	_, port := clientSidecarService.GetAddr()
 	_, adminPort := clientSidecarService.GetAdminAddr()

test/integration/consul-container/test/upgrade/peering/peering_http_test.go

@@ -7,10 +7,12 @@ import (
 	"context"
 	"fmt"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/require"
 
 	"github.com/hashicorp/consul/api"
+	"github.com/hashicorp/consul/sdk/testutil/retry"
 	libassert "github.com/hashicorp/consul/test/integration/consul-container/libs/assert"
 	libservice "github.com/hashicorp/consul/test/integration/consul-container/libs/service"
 	libtopology "github.com/hashicorp/consul/test/integration/consul-container/libs/topology"
@@ -83,13 +85,13 @@ func TestPeering_HTTPRouter(t *testing.T) {
 	}
 	require.NoError(t, acceptingCluster.ConfigEntryWrite(routerConfigEntry))
 	_, appPort := dialing.Container.GetAddr()
-	libassert.AssertFortioName(t, fmt.Sprintf("http://localhost:%d/static-server-2", appPort), "static-server-2", "")
+	libassert.WaitForFortioName(t, retry.ThirtySeconds(), fmt.Sprintf("http://localhost:%d/static-server-2", appPort), "static-server-2", "")
 
 	peeringUpgrade(t, accepting, dialing, utils.TargetVersion)
 
 	peeringPostUpgradeValidation(t, dialing)
 	// TODO: restart static-server-2's sidecar
-	libassert.AssertFortioName(t, fmt.Sprintf("http://localhost:%d/static-server-2", appPort), "static-server-2", "")
+	libassert.WaitForFortioName(t, retry.ThirtySeconds(), fmt.Sprintf("http://localhost:%d/static-server-2", appPort), "static-server-2", "")
 }
 
 // Verify resolver and failover can direct traffic to server in peered cluster
@@ -171,11 +173,12 @@ func TestPeering_HTTPResolverAndFailover(t *testing.T) {
 
 	assertionAdditionalResources := func() {
 		// assert traffic can fail-over to static-server in peered cluster and restor to local static-server
-		libassert.AssertFortioName(t, fmt.Sprintf("http://localhost:%d", appPorts[0]), "static-server-dialing", "")
+		// timeouts in this segment of the test reflect previously implicit retries in fortio name assertions for parity
+		libassert.WaitForFortioName(t, &retry.Timer{Timeout: 2 * time.Minute, Wait: 500 * time.Millisecond}, fmt.Sprintf("http://localhost:%d", appPorts[0]), "static-server-dialing", "")
 		require.NoError(t, serverConnectProxy.Stop())
-		libassert.AssertFortioName(t, fmt.Sprintf("http://localhost:%d", appPorts[0]), libservice.StaticServerServiceName, "")
+		libassert.WaitForFortioName(t, &retry.Timer{Timeout: 2 * time.Minute, Wait: 500 * time.Millisecond}, fmt.Sprintf("http://localhost:%d", appPorts[0]), libservice.StaticServerServiceName, "")
 		require.NoError(t, serverConnectProxy.Start())
-		libassert.AssertFortioName(t, fmt.Sprintf("http://localhost:%d", appPorts[0]), "static-server-dialing", "")
+		libassert.WaitForFortioName(t, &retry.Timer{Timeout: 2 * time.Minute, Wait: 500 * time.Millisecond}, fmt.Sprintf("http://localhost:%d", appPorts[0]), "static-server-dialing", "")
 
 		// assert peer-static-server resolves to static-server in peered cluster
 		libassert.AssertFortioName(t, fmt.Sprintf("http://localhost:%d", appPorts[1]), libservice.StaticServerServiceName, "")
@@ -352,7 +355,7 @@ func peeringUpgrade(t *testing.T, accepting, dialing *libtopology.BuiltCluster,
 func peeringPostUpgradeValidation(t *testing.T, dialing *libtopology.BuiltCluster) {
 	t.Helper()
 
-	clientSidecarService, err := libservice.CreateAndRegisterStaticClientSidecar(dialing.Cluster.Servers()[0], libtopology.DialingPeerName, true, false)
+	clientSidecarService, err := libservice.CreateAndRegisterStaticClientSidecar(dialing.Cluster.Servers()[0], libtopology.DialingPeerName, true, false, nil)
 	require.NoError(t, err)
 	_, port := clientSidecarService.GetAddr()
 	_, adminPort := clientSidecarService.GetAdminAddr()

test/integration/consul-container/test/wanfed/wanfed_peering_test.go

@@ -57,7 +57,7 @@ func TestPeering_WanFedSecondaryDC(t *testing.T) {
 		require.NoError(t, service.Export("default", "alpha-to-secondary", c3Agent.GetClient()))
 
 		// Create a testing sidecar to proxy requests through
-		clientConnectProxy, err := libservice.CreateAndRegisterStaticClientSidecar(c2Agent, "secondary-to-alpha", false, false)
+		clientConnectProxy, err := libservice.CreateAndRegisterStaticClientSidecar(c2Agent, "secondary-to-alpha", false, false, nil)
 		require.NoError(t, err)
 		libassert.CatalogServiceExists(t, c2Agent.GetClient(), "static-client-sidecar-proxy", nil)