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| 1 | +// Copyright 2017 The etcd Authors |
| 2 | +// |
| 3 | +// Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | +// you may not use this file except in compliance with the License. |
| 5 | +// You may obtain a copy of the License at |
| 6 | +// |
| 7 | +// http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | +// |
| 9 | +// Unless required by applicable law or agreed to in writing, software |
| 10 | +// distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | +// See the License for the specific language governing permissions and |
| 13 | +// limitations under the License. |
| 14 | + |
| 15 | +package integration |
| 16 | + |
| 17 | +import ( |
| 18 | + "context" |
| 19 | + "errors" |
| 20 | + "testing" |
| 21 | + "time" |
| 22 | + |
| 23 | + "go.etcd.io/etcd/v3/clientv3" |
| 24 | + "go.etcd.io/etcd/v3/clientv3/ordering" |
| 25 | + "go.etcd.io/etcd/v3/integration" |
| 26 | + "go.etcd.io/etcd/v3/pkg/testutil" |
| 27 | +) |
| 28 | + |
| 29 | +func TestDetectKvOrderViolation(t *testing.T) { |
| 30 | + var errOrderViolation = errors.New("Detected Order Violation") |
| 31 | + |
| 32 | + defer testutil.AfterTest(t) |
| 33 | + clus := integration.NewClusterV3(t, &integration.ClusterConfig{Size: 3}) |
| 34 | + defer clus.Terminate(t) |
| 35 | + |
| 36 | + cfg := clientv3.Config{ |
| 37 | + Endpoints: []string{ |
| 38 | + clus.Members[0].GRPCAddr(), |
| 39 | + clus.Members[1].GRPCAddr(), |
| 40 | + clus.Members[2].GRPCAddr(), |
| 41 | + }, |
| 42 | + } |
| 43 | + cli, err := clientv3.New(cfg) |
| 44 | + if err != nil { |
| 45 | + t.Fatal(err) |
| 46 | + } |
| 47 | + defer cli.Close() |
| 48 | + ctx := context.TODO() |
| 49 | + |
| 50 | + if _, err = clus.Client(0).Put(ctx, "foo", "bar"); err != nil { |
| 51 | + t.Fatal(err) |
| 52 | + } |
| 53 | + // ensure that the second member has the current revision for the key foo |
| 54 | + if _, err = clus.Client(1).Get(ctx, "foo"); err != nil { |
| 55 | + t.Fatal(err) |
| 56 | + } |
| 57 | + |
| 58 | + // stop third member in order to force the member to have an outdated revision |
| 59 | + clus.Members[2].Stop(t) |
| 60 | + time.Sleep(1 * time.Second) // give enough time for operation |
| 61 | + _, err = cli.Put(ctx, "foo", "buzz") |
| 62 | + if err != nil { |
| 63 | + t.Fatal(err) |
| 64 | + } |
| 65 | + |
| 66 | + // perform get request against the first member, in order to |
| 67 | + // set up kvOrdering to expect "foo" revisions greater than that of |
| 68 | + // the third member. |
| 69 | + orderingKv := ordering.NewKV(cli.KV, |
| 70 | + func(op clientv3.Op, resp clientv3.OpResponse, prevRev int64) error { |
| 71 | + return errOrderViolation |
| 72 | + }) |
| 73 | + _, err = orderingKv.Get(ctx, "foo") |
| 74 | + if err != nil { |
| 75 | + t.Fatal(err) |
| 76 | + } |
| 77 | + |
| 78 | + // ensure that only the third member is queried during requests |
| 79 | + clus.Members[0].Stop(t) |
| 80 | + clus.Members[1].Stop(t) |
| 81 | + clus.Members[2].Restart(t) |
| 82 | + // force OrderingKv to query the third member |
| 83 | + cli.SetEndpoints(clus.Members[2].GRPCAddr()) |
| 84 | + time.Sleep(2 * time.Second) // FIXME: Figure out how pause SetEndpoints sufficiently that this is not needed |
| 85 | + |
| 86 | + _, err = orderingKv.Get(ctx, "foo", clientv3.WithSerializable()) |
| 87 | + if err != errOrderViolation { |
| 88 | + t.Fatalf("expected %v, got %v", errOrderViolation, err) |
| 89 | + } |
| 90 | +} |
| 91 | + |
| 92 | +func TestDetectTxnOrderViolation(t *testing.T) { |
| 93 | + var errOrderViolation = errors.New("Detected Order Violation") |
| 94 | + |
| 95 | + defer testutil.AfterTest(t) |
| 96 | + clus := integration.NewClusterV3(t, &integration.ClusterConfig{Size: 3}) |
| 97 | + defer clus.Terminate(t) |
| 98 | + |
| 99 | + cfg := clientv3.Config{ |
| 100 | + Endpoints: []string{ |
| 101 | + clus.Members[0].GRPCAddr(), |
| 102 | + clus.Members[1].GRPCAddr(), |
| 103 | + clus.Members[2].GRPCAddr(), |
| 104 | + }, |
| 105 | + } |
| 106 | + cli, err := clientv3.New(cfg) |
| 107 | + defer cli.Close() |
| 108 | + if err != nil { |
| 109 | + t.Fatal(err) |
| 110 | + } |
| 111 | + defer cli.Close() |
| 112 | + ctx := context.TODO() |
| 113 | + |
| 114 | + if _, err = clus.Client(0).Put(ctx, "foo", "bar"); err != nil { |
| 115 | + t.Fatal(err) |
| 116 | + } |
| 117 | + // ensure that the second member has the current revision for the key foo |
| 118 | + if _, err = clus.Client(1).Get(ctx, "foo"); err != nil { |
| 119 | + t.Fatal(err) |
| 120 | + } |
| 121 | + |
| 122 | + // stop third member in order to force the member to have an outdated revision |
| 123 | + clus.Members[2].Stop(t) |
| 124 | + time.Sleep(1 * time.Second) // give enough time for operation |
| 125 | + if _, err = clus.Client(1).Put(ctx, "foo", "buzz"); err != nil { |
| 126 | + t.Fatal(err) |
| 127 | + } |
| 128 | + |
| 129 | + // perform get request against the first member, in order to |
| 130 | + // set up kvOrdering to expect "foo" revisions greater than that of |
| 131 | + // the third member. |
| 132 | + orderingKv := ordering.NewKV(cli.KV, |
| 133 | + func(op clientv3.Op, resp clientv3.OpResponse, prevRev int64) error { |
| 134 | + return errOrderViolation |
| 135 | + }) |
| 136 | + orderingTxn := orderingKv.Txn(ctx) |
| 137 | + _, err = orderingTxn.If( |
| 138 | + clientv3.Compare(clientv3.Value("b"), ">", "a"), |
| 139 | + ).Then( |
| 140 | + clientv3.OpGet("foo"), |
| 141 | + ).Commit() |
| 142 | + if err != nil { |
| 143 | + t.Fatal(err) |
| 144 | + } |
| 145 | + |
| 146 | + // ensure that only the third member is queried during requests |
| 147 | + clus.Members[0].Stop(t) |
| 148 | + clus.Members[1].Stop(t) |
| 149 | + clus.Members[2].Restart(t) |
| 150 | + // force OrderingKv to query the third member |
| 151 | + cli.SetEndpoints(clus.Members[2].GRPCAddr()) |
| 152 | + time.Sleep(2 * time.Second) // FIXME: Figure out how pause SetEndpoints sufficiently that this is not needed |
| 153 | + _, err = orderingKv.Get(ctx, "foo", clientv3.WithSerializable()) |
| 154 | + if err != errOrderViolation { |
| 155 | + t.Fatalf("expected %v, got %v", errOrderViolation, err) |
| 156 | + } |
| 157 | + orderingTxn = orderingKv.Txn(ctx) |
| 158 | + _, err = orderingTxn.If( |
| 159 | + clientv3.Compare(clientv3.Value("b"), ">", "a"), |
| 160 | + ).Then( |
| 161 | + clientv3.OpGet("foo", clientv3.WithSerializable()), |
| 162 | + ).Commit() |
| 163 | + if err != errOrderViolation { |
| 164 | + t.Fatalf("expected %v, got %v", errOrderViolation, err) |
| 165 | + } |
| 166 | +} |
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