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| 1 | +// Copyright 2023 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 etcdserver |
| 16 | + |
| 17 | +import ( |
| 18 | + "bytes" |
| 19 | + "encoding/json" |
| 20 | + "io" |
| 21 | + "net/http" |
| 22 | + "net/http/httptest" |
| 23 | + "strconv" |
| 24 | + "strings" |
| 25 | + "testing" |
| 26 | + |
| 27 | + "github.com/stretchr/testify/assert" |
| 28 | + "go.uber.org/zap" |
| 29 | + |
| 30 | + pb "go.etcd.io/etcd/etcdserver/etcdserverpb" |
| 31 | + "go.etcd.io/etcd/lease" |
| 32 | + "go.etcd.io/etcd/mvcc" |
| 33 | + betesting "go.etcd.io/etcd/mvcc/backend" |
| 34 | + "go.etcd.io/etcd/pkg/types" |
| 35 | +) |
| 36 | + |
| 37 | +func TestHashKVHandler(t *testing.T) { |
| 38 | + var remoteClusterID = 111195 |
| 39 | + var localClusterID = 111196 |
| 40 | + var revision = 1 |
| 41 | + |
| 42 | + etcdSrv := &EtcdServer{} |
| 43 | + etcdSrv.cluster = newTestCluster(nil) |
| 44 | + etcdSrv.cluster.SetID(types.ID(localClusterID), types.ID(localClusterID)) |
| 45 | + be, _ := betesting.NewDefaultTmpBackend() |
| 46 | + defer func() { |
| 47 | + assert.NoError(t, be.Close()) |
| 48 | + }() |
| 49 | + etcdSrv.kv = mvcc.New(zap.NewNop(), be, &lease.FakeLessor{}, nil, nil, mvcc.StoreConfig{}) |
| 50 | + ph := &hashKVHandler{ |
| 51 | + lg: zap.NewNop(), |
| 52 | + server: etcdSrv, |
| 53 | + } |
| 54 | + srv := httptest.NewServer(ph) |
| 55 | + defer srv.Close() |
| 56 | + |
| 57 | + tests := []struct { |
| 58 | + name string |
| 59 | + remoteClusterID int |
| 60 | + wcode int |
| 61 | + wKeyWords string |
| 62 | + }{ |
| 63 | + { |
| 64 | + name: "HashKV returns 200 if cluster hash matches", |
| 65 | + remoteClusterID: localClusterID, |
| 66 | + wcode: http.StatusOK, |
| 67 | + wKeyWords: "", |
| 68 | + }, |
| 69 | + { |
| 70 | + name: "HashKV returns 400 if cluster hash doesn't matche", |
| 71 | + remoteClusterID: remoteClusterID, |
| 72 | + wcode: http.StatusPreconditionFailed, |
| 73 | + wKeyWords: "cluster ID mismatch", |
| 74 | + }, |
| 75 | + } |
| 76 | + for i, tt := range tests { |
| 77 | + t.Run(tt.name, func(t *testing.T) { |
| 78 | + hashReq := &pb.HashKVRequest{Revision: int64(revision)} |
| 79 | + hashReqBytes, err := json.Marshal(hashReq) |
| 80 | + if err != nil { |
| 81 | + t.Fatalf("failed to marshal request: %v", err) |
| 82 | + } |
| 83 | + req, err := http.NewRequest(http.MethodGet, srv.URL+PeerHashKVPath, bytes.NewReader(hashReqBytes)) |
| 84 | + if err != nil { |
| 85 | + t.Fatalf("failed to create request: %v", err) |
| 86 | + } |
| 87 | + req.Header.Set("X-Etcd-Cluster-ID", strconv.FormatUint(uint64(tt.remoteClusterID), 16)) |
| 88 | + |
| 89 | + resp, err := http.DefaultClient.Do(req) |
| 90 | + if err != nil { |
| 91 | + t.Fatalf("failed to get http response: %v", err) |
| 92 | + } |
| 93 | + body, err := io.ReadAll(resp.Body) |
| 94 | + resp.Body.Close() |
| 95 | + if err != nil { |
| 96 | + t.Fatalf("unexpected io.ReadAll error: %v", err) |
| 97 | + } |
| 98 | + if resp.StatusCode != tt.wcode { |
| 99 | + t.Fatalf("#%d: code = %d, want %d", i, resp.StatusCode, tt.wcode) |
| 100 | + } |
| 101 | + if resp.StatusCode != http.StatusOK { |
| 102 | + if !strings.Contains(string(body), tt.wKeyWords) { |
| 103 | + t.Errorf("#%d: body: %s, want body to contain keywords: %s", i, string(body), tt.wKeyWords) |
| 104 | + } |
| 105 | + return |
| 106 | + } |
| 107 | + |
| 108 | + hashKVResponse := pb.HashKVResponse{} |
| 109 | + err = json.Unmarshal(body, &hashKVResponse) |
| 110 | + if err != nil { |
| 111 | + t.Fatalf("unmarshal response error: %v", err) |
| 112 | + } |
| 113 | + hashValue, _, _, err := etcdSrv.KV().HashByRev(int64(revision)) |
| 114 | + if err != nil { |
| 115 | + t.Fatalf("etcd server hash failed: %v", err) |
| 116 | + } |
| 117 | + if hashKVResponse.Hash != hashValue { |
| 118 | + t.Fatalf("hash value inconsistent: %d != %d", hashKVResponse.Hash, hashValue) |
| 119 | + } |
| 120 | + }) |
| 121 | + } |
| 122 | +} |
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