/
authority_test.go
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/
authority_test.go
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/*
*
* Copyright 2022 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package e2e_test
import (
"context"
"testing"
"time"
"github.com/google/uuid"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials/insecure"
"google.golang.org/grpc/internal/testutils"
"google.golang.org/grpc/internal/testutils/xds/e2e"
xdstestutils "google.golang.org/grpc/xds/internal/testutils"
"google.golang.org/grpc/xds/internal/xdsclient"
"google.golang.org/grpc/xds/internal/xdsclient/bootstrap"
"google.golang.org/grpc/xds/internal/xdsclient/xdsresource"
"google.golang.org/grpc/xds/internal/xdsclient/xdsresource/version"
v3clusterpb "github.com/envoyproxy/go-control-plane/envoy/config/cluster/v3"
v3corepb "github.com/envoyproxy/go-control-plane/envoy/config/core/v3"
)
const (
testAuthority1 = "test-authority1"
testAuthority2 = "test-authority2"
testAuthority3 = "test-authority3"
)
var (
// These two resources use `testAuthority1`, which contains an empty server
// config in the bootstrap file, and therefore will use the default
// management server.
authorityTestResourceName11 = xdstestutils.BuildResourceName(xdsresource.ClusterResource, testAuthority1, cdsName+"1", nil)
authorityTestResourceName12 = xdstestutils.BuildResourceName(xdsresource.ClusterResource, testAuthority1, cdsName+"2", nil)
// This resource uses `testAuthority2`, which contains an empty server
// config in the bootstrap file, and therefore will use the default
// management server.
authorityTestResourceName2 = xdstestutils.BuildResourceName(xdsresource.ClusterResource, testAuthority2, cdsName+"3", nil)
// This resource uses `testAuthority3`, which contains a non-empty server
// config in the bootstrap file, and therefore will use the non-default
// management server.
authorityTestResourceName3 = xdstestutils.BuildResourceName(xdsresource.ClusterResource, testAuthority3, cdsName+"3", nil)
)
// setupForAuthorityTests spins up two management servers, one to act as the
// default and the other to act as the non-default. It also generates a
// bootstrap configuration with three authorities (the first two pointing to the
// default and the third one pointing to the non-default).
//
// Returns two listeners used by the default and non-default management servers
// respectively, and the xDS client.
func setupForAuthorityTests(ctx context.Context, t *testing.T, idleTimeout time.Duration) (*testutils.ListenerWrapper, *testutils.ListenerWrapper, xdsclient.XDSClient) {
overrideFedEnvVar(t)
// Create listener wrappers which notify on to a channel whenever a new
// connection is accepted. We use this to track the number of transports
// used by the xDS client.
lisDefault := testutils.NewListenerWrapper(t, nil)
lisNonDefault := testutils.NewListenerWrapper(t, nil)
// Start a management server to act as the default authority.
defaultAuthorityServer, err := e2e.StartManagementServer(&e2e.ManagementServerOptions{Listener: lisDefault})
if err != nil {
t.Fatalf("Failed to spin up the xDS management server: %v", err)
}
t.Cleanup(func() { defaultAuthorityServer.Stop() })
// Start a management server to act as the non-default authority.
nonDefaultAuthorityServer, err := e2e.StartManagementServer(&e2e.ManagementServerOptions{Listener: lisNonDefault})
if err != nil {
t.Fatalf("Failed to spin up the xDS management server: %v", err)
}
t.Cleanup(func() { nonDefaultAuthorityServer.Stop() })
// Create a bootstrap configuration with two non-default authorities which
// have empty server configs, and therefore end up using the default server
// config, which points to the above management server.
nodeID := uuid.New().String()
client, err := xdsclient.NewWithConfigForTesting(&bootstrap.Config{
XDSServer: &bootstrap.ServerConfig{
ServerURI: defaultAuthorityServer.Address,
Creds: grpc.WithTransportCredentials(insecure.NewCredentials()),
TransportAPI: version.TransportV3,
NodeProto: &v3corepb.Node{Id: nodeID},
},
Authorities: map[string]*bootstrap.Authority{
testAuthority1: {},
testAuthority2: {},
testAuthority3: {
XDSServer: &bootstrap.ServerConfig{
ServerURI: nonDefaultAuthorityServer.Address,
Creds: grpc.WithTransportCredentials(insecure.NewCredentials()),
TransportAPI: version.TransportV3,
NodeProto: &v3corepb.Node{Id: nodeID},
},
},
},
}, defaultTestWatchExpiryTimeout, idleTimeout)
if err != nil {
t.Fatalf("failed to create xds client: %v", err)
}
t.Cleanup(func() { client.Close() })
resources := e2e.UpdateOptions{
NodeID: nodeID,
Clusters: []*v3clusterpb.Cluster{
e2e.DefaultCluster(authorityTestResourceName11, edsName, e2e.SecurityLevelNone),
e2e.DefaultCluster(authorityTestResourceName12, edsName, e2e.SecurityLevelNone),
e2e.DefaultCluster(authorityTestResourceName2, edsName, e2e.SecurityLevelNone),
e2e.DefaultCluster(authorityTestResourceName3, edsName, e2e.SecurityLevelNone),
},
SkipValidation: true,
}
if err := defaultAuthorityServer.Update(ctx, resources); err != nil {
t.Fatalf("Failed to update management server with resources: %v, err: %v", resources, err)
}
return lisDefault, lisNonDefault, client
}
// TestAuthorityShare tests the authority sharing logic. The test verifies the
// following scenarios:
// - A watch for a resource name with an authority matching an existing watch
// should not result in a new transport being created.
// - A watch for a resource name with different authority name but same
// authority config as an existing watch should not result in a new transport
// being created.
func (s) TestAuthorityShare(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), defaultTestTimeout)
defer cancel()
lis, _, client := setupForAuthorityTests(ctx, t, time.Duration(0))
// Verify that no connection is established to the management server at this
// point. A transport is created only when a resource (which belongs to that
// authority) is requested.
sCtx, sCancel := context.WithTimeout(ctx, defaultTestShortTimeout)
defer sCancel()
if _, err := lis.NewConnCh.Receive(sCtx); err != context.DeadlineExceeded {
t.Fatal("Unexpected new transport created to management server")
}
// Request the first resource. Verify that a new transport is created.
cdsCancel1 := client.WatchCluster(authorityTestResourceName11, func(u xdsresource.ClusterUpdate, err error) {})
defer cdsCancel1()
if _, err := lis.NewConnCh.Receive(ctx); err != nil {
t.Fatalf("Timed out when waiting for a new transport to be created to the management server: %v", err)
}
// Request the second resource. Verify that no new transport is created.
cdsCancel2 := client.WatchCluster(authorityTestResourceName12, func(u xdsresource.ClusterUpdate, err error) {})
defer cdsCancel2()
sCtx, sCancel = context.WithTimeout(ctx, defaultTestShortTimeout)
defer sCancel()
if _, err := lis.NewConnCh.Receive(sCtx); err != context.DeadlineExceeded {
t.Fatal("Unexpected new transport created to management server")
}
// Request the third resource. Verify that no new transport is created.
cdsCancel3 := client.WatchCluster(authorityTestResourceName2, func(u xdsresource.ClusterUpdate, err error) {})
defer cdsCancel3()
sCtx, sCancel = context.WithTimeout(ctx, defaultTestShortTimeout)
defer sCancel()
if _, err := lis.NewConnCh.Receive(sCtx); err != context.DeadlineExceeded {
t.Fatal("Unexpected new transport created to management server")
}
}
// TestAuthorityIdle test the authority idle timeout logic. The test verifies
// that the xDS client does not close authorities immediately after the last
// watch is canceled, but waits for the configured idle timeout to expire before
// closing them.
func (s) TestAuthorityIdleTimeout(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), defaultTestTimeout)
defer cancel()
lis, _, client := setupForAuthorityTests(ctx, t, defaultTestIdleAuthorityTimeout)
// Request the first resource. Verify that a new transport is created.
cdsCancel1 := client.WatchCluster(authorityTestResourceName11, func(u xdsresource.ClusterUpdate, err error) {})
val, err := lis.NewConnCh.Receive(ctx)
if err != nil {
t.Fatalf("Timed out when waiting for a new transport to be created to the management server: %v", err)
}
conn := val.(*testutils.ConnWrapper)
// Request the second resource. Verify that no new transport is created.
cdsCancel2 := client.WatchCluster(authorityTestResourceName12, func(u xdsresource.ClusterUpdate, err error) {})
sCtx, sCancel := context.WithTimeout(ctx, defaultTestShortTimeout)
defer sCancel()
if _, err := lis.NewConnCh.Receive(sCtx); err != context.DeadlineExceeded {
t.Fatal("Unexpected new transport created to management server")
}
// Cancel both watches, and verify that the connection to the management
// server is not closed immediately.
cdsCancel1()
cdsCancel2()
sCtx, sCancel = context.WithTimeout(ctx, defaultTestShortTimeout)
defer sCancel()
if _, err := conn.CloseCh.Receive(sCtx); err != context.DeadlineExceeded {
t.Fatal("Connection to management server closed unexpectedly")
}
// Wait for the authority idle timeout to fire.
time.Sleep(2 * defaultTestIdleAuthorityTimeout)
sCtx, sCancel = context.WithTimeout(ctx, defaultTestShortTimeout)
defer sCancel()
if _, err := conn.CloseCh.Receive(sCtx); err != nil {
t.Fatal("Connection to management server not closed after idle timeout expiry")
}
}
// TestAuthorityClientClose verifies that authorities in use and in the idle
// cache are all closed when the client is closed.
func (s) TestAuthorityClientClose(t *testing.T) {
// Set the authority idle timeout to twice the defaultTestTimeout. This will
// ensure that idle authorities stay in the cache for the duration of this
// test, until explicitly closed.
ctx, cancel := context.WithTimeout(context.Background(), defaultTestTimeout)
defer cancel()
lisDefault, lisNonDefault, client := setupForAuthorityTests(ctx, t, time.Duration(2*defaultTestTimeout))
// Request the first resource. Verify that a new transport is created to the
// default management server.
cdsCancel1 := client.WatchCluster(authorityTestResourceName11, func(u xdsresource.ClusterUpdate, err error) {})
val, err := lisDefault.NewConnCh.Receive(ctx)
if err != nil {
t.Fatalf("Timed out when waiting for a new transport to be created to the management server: %v", err)
}
connDefault := val.(*testutils.ConnWrapper)
// Request another resource which is served by the non-default authority.
// Verify that a new transport is created to the non-default management
// server.
client.WatchCluster(authorityTestResourceName3, func(u xdsresource.ClusterUpdate, err error) {})
val, err = lisNonDefault.NewConnCh.Receive(ctx)
if err != nil {
t.Fatalf("Timed out when waiting for a new transport to be created to the management server: %v", err)
}
connNonDefault := val.(*testutils.ConnWrapper)
// Cancel the first watch. This should move the default authority to the
// idle cache, but the connection should not be closed yet, because the idle
// timeout would not have fired.
cdsCancel1()
sCtx, sCancel := context.WithTimeout(ctx, defaultTestShortTimeout)
defer sCancel()
if _, err := connDefault.CloseCh.Receive(sCtx); err != context.DeadlineExceeded {
t.Fatal("Connection to management server closed unexpectedly")
}
// Closing the xDS client should close the connection to both management
// servers, even though we have an open watch to one of them.
client.Close()
if _, err := connDefault.CloseCh.Receive(ctx); err != nil {
t.Fatal("Connection to management server not closed after client close")
}
if _, err := connNonDefault.CloseCh.Receive(ctx); err != nil {
t.Fatal("Connection to management server not closed after client close")
}
}
// TestAuthorityRevive verifies that an authority in the idle cache is revived
// when a new watch is started on this authority.
func (s) TestAuthorityRevive(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), defaultTestTimeout)
defer cancel()
lis, _, client := setupForAuthorityTests(ctx, t, defaultTestIdleAuthorityTimeout)
// Request the first resource. Verify that a new transport is created.
cdsCancel1 := client.WatchCluster(authorityTestResourceName11, func(u xdsresource.ClusterUpdate, err error) {})
val, err := lis.NewConnCh.Receive(ctx)
if err != nil {
t.Fatalf("Timed out when waiting for a new transport to be created to the management server: %v", err)
}
conn := val.(*testutils.ConnWrapper)
// Cancel the above watch. This should move the authority to the idle cache.
cdsCancel1()
// Request the second resource. Verify that no new transport is created.
// This should move the authority out of the idle cache.
cdsCancel2 := client.WatchCluster(authorityTestResourceName12, func(u xdsresource.ClusterUpdate, err error) {})
defer cdsCancel2()
sCtx, sCancel := context.WithTimeout(ctx, defaultTestShortTimeout)
defer sCancel()
if _, err := lis.NewConnCh.Receive(sCtx); err != context.DeadlineExceeded {
t.Fatal("Unexpected new transport created to management server")
}
// Wait for double the idle timeout, and the connection to the management
// server should not be closed, since it was revived from the idle cache.
time.Sleep(2 * defaultTestIdleAuthorityTimeout)
sCtx, sCancel = context.WithTimeout(ctx, defaultTestShortTimeout)
defer sCancel()
if _, err := conn.CloseCh.Receive(sCtx); err != context.DeadlineExceeded {
t.Fatal("Connection to management server closed unexpectedly")
}
}