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| 1 | +/* |
| 2 | + * |
| 3 | + * Copyright 2025 gRPC authors. |
| 4 | + * |
| 5 | + * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | + * you may not use this file except in compliance with the License. |
| 7 | + * You may obtain a copy of the License at |
| 8 | + * |
| 9 | + * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | + * |
| 11 | + * Unless required by applicable law or agreed to in writing, software |
| 12 | + * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | + * See the License for the specific language governing permissions and |
| 15 | + * limitations under the License. |
| 16 | + * |
| 17 | + */ |
| 18 | + |
| 19 | +package pool_test |
| 20 | + |
| 21 | +import ( |
| 22 | +"encoding/json" |
| 23 | +"fmt" |
| 24 | +"testing" |
| 25 | + |
| 26 | +"github.com/google/uuid" |
| 27 | +"google.golang.org/grpc/internal/grpctest" |
| 28 | +"google.golang.org/grpc/internal/testutils" |
| 29 | +"google.golang.org/grpc/internal/testutils/stats" |
| 30 | +"google.golang.org/grpc/internal/xds/bootstrap" |
| 31 | +"google.golang.org/grpc/xds/internal/xdsclient" |
| 32 | +) |
| 33 | + |
| 34 | +type s struct { |
| 35 | +grpctest.Tester |
| 36 | +} |
| 37 | + |
| 38 | +func Test(t *testing.T) { |
| 39 | +grpctest.RunSubTests(t, s{}) |
| 40 | +} |
| 41 | + |
| 42 | +// TestDefaultPool_LazyLoadBootstrapConfig verifies that the DefaultPool |
| 43 | +// lazily loads the bootstrap configuration from environment variables when |
| 44 | +// an xDS client is created for the first time. |
| 45 | +// |
| 46 | +// If tries to create the new client in DefaultPool at the start of test when |
| 47 | +// none of the env vars are set. This should fail. |
| 48 | +// |
| 49 | +// Then it sets the env var XDSBootstrapFileName and retry creating a client |
| 50 | +// in DefaultPool. This should succeed. |
| 51 | +func (s) TestDefaultPool_LazyLoadBootstrapConfig(t *testing.T) { |
| 52 | +_, closeFunc, err := xdsclient.DefaultPool.NewClient(t.Name(), &stats.NoopMetricsRecorder{}) |
| 53 | +if err == nil { |
| 54 | +t.Fatalf("xdsclient.DefaultPool.NewClient() succeeded without setting bootstrap config env vars, want failure") |
| 55 | +} |
| 56 | + |
| 57 | +bs, err := bootstrap.NewContentsForTesting(bootstrap.ConfigOptionsForTesting{ |
| 58 | +Servers: []byte(fmt.Sprintf(`[{ |
| 59 | + "server_uri": %q, |
| 60 | + "channel_creds": [{"type": "insecure"}] |
| 61 | + }]`, "non-existent-management-server")), |
| 62 | +Node: []byte(fmt.Sprintf(`{"id": "%s"}`, uuid.New().String())), |
| 63 | +CertificateProviders: map[string]json.RawMessage{ |
| 64 | +"cert-provider-instance": json.RawMessage("{}"), |
| 65 | +}, |
| 66 | +}) |
| 67 | +if err != nil { |
| 68 | +t.Fatalf("Failed to create bootstrap configuration: %v", err) |
| 69 | +} |
| 70 | + |
| 71 | +testutils.CreateBootstrapFileForTesting(t, bs) |
| 72 | +if cfg := xdsclient.DefaultPool.BootstrapConfigForTesting(); cfg != nil { |
| 73 | +t.Fatalf("DefaultPool.BootstrapConfigForTesting() = %v, want nil", cfg) |
| 74 | +} |
| 75 | + |
| 76 | +_, closeFunc, err = xdsclient.DefaultPool.NewClient(t.Name(), &stats.NoopMetricsRecorder{}) |
| 77 | +if err != nil { |
| 78 | +t.Fatalf("Failed to create xDS client: %v", err) |
| 79 | +} |
| 80 | +defer func() { |
| 81 | +closeFunc() |
| 82 | +xdsclient.DefaultPool.UnsetBootstrapConfigForTesting() |
| 83 | +}() |
| 84 | + |
| 85 | +if xdsclient.DefaultPool.BootstrapConfigForTesting() == nil { |
| 86 | +t.Fatalf("DefaultPool.BootstrapConfigForTesting() = nil, want non-nil") |
| 87 | +} |
| 88 | +} |
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