-
Notifications
You must be signed in to change notification settings - Fork 4.4k
/
leader_test.go
394 lines (330 loc) · 8.67 KB
/
leader_test.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
package consul
import (
"fmt"
"github.com/hashicorp/consul/consul/structs"
"github.com/hashicorp/serf/serf"
"os"
"testing"
"time"
)
func TestLeader_RegisterMember(t *testing.T) {
dir1, s1 := testServer(t)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
dir2, c1 := testClient(t)
defer os.RemoveAll(dir2)
defer c1.Shutdown()
// Wait until we have a leader
time.Sleep(100 * time.Millisecond)
// Try to join
addr := fmt.Sprintf("127.0.0.1:%d",
s1.config.SerfLANConfig.MemberlistConfig.BindPort)
if _, err := c1.JoinLAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
// Wait for registration
time.Sleep(10 * time.Millisecond)
// Client should be registered
state := s1.fsm.State()
_, found, _ := state.GetNode(c1.config.NodeName)
if !found {
t.Fatalf("client not registered")
}
// Should have a check
_, checks := state.NodeChecks(c1.config.NodeName)
if len(checks) != 1 {
t.Fatalf("client missing check")
}
if checks[0].CheckID != SerfCheckID {
t.Fatalf("bad check: %v", checks[0])
}
if checks[0].Name != SerfCheckName {
t.Fatalf("bad check: %v", checks[0])
}
if checks[0].Status != structs.HealthPassing {
t.Fatalf("bad check: %v", checks[0])
}
// Server should be registered
_, found, _ = state.GetNode(s1.config.NodeName)
if !found {
t.Fatalf("server not registered")
}
// Service should be registered
_, services := state.NodeServices(s1.config.NodeName)
if _, ok := services.Services["consul"]; !ok {
t.Fatalf("consul service not registered: %v", services)
}
}
func TestLeader_FailedMember(t *testing.T) {
dir1, s1 := testServer(t)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
dir2, c1 := testClient(t)
defer os.RemoveAll(dir2)
defer c1.Shutdown()
// Wait until we have a leader
time.Sleep(100 * time.Millisecond)
// Try to join
addr := fmt.Sprintf("127.0.0.1:%d",
s1.config.SerfLANConfig.MemberlistConfig.BindPort)
if _, err := c1.JoinLAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
// Fail the member
c1.Shutdown()
// Wait for failure detection
time.Sleep(500 * time.Millisecond)
// Should be registered
state := s1.fsm.State()
_, found, _ := state.GetNode(c1.config.NodeName)
if !found {
t.Fatalf("client not registered")
}
// Should have a check
_, checks := state.NodeChecks(c1.config.NodeName)
if len(checks) != 1 {
t.Fatalf("client missing check")
}
if checks[0].CheckID != SerfCheckID {
t.Fatalf("bad check: %v", checks[0])
}
if checks[0].Name != SerfCheckName {
t.Fatalf("bad check: %v", checks[0])
}
if checks[0].Status != structs.HealthCritical {
t.Fatalf("bad check: %v", checks[0])
}
}
func TestLeader_LeftMember(t *testing.T) {
dir1, s1 := testServer(t)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
dir2, c1 := testClient(t)
defer os.RemoveAll(dir2)
defer c1.Shutdown()
// Wait until we have a leader
time.Sleep(100 * time.Millisecond)
// Try to join
addr := fmt.Sprintf("127.0.0.1:%d",
s1.config.SerfLANConfig.MemberlistConfig.BindPort)
if _, err := c1.JoinLAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
// Wait for registration
time.Sleep(10 * time.Millisecond)
// Should be registered
state := s1.fsm.State()
_, found, _ := state.GetNode(c1.config.NodeName)
if !found {
t.Fatalf("client not registered")
}
// Node should leave
c1.Leave()
c1.Shutdown()
// Wait for failure detection
time.Sleep(500 * time.Millisecond)
// Should be deregistered
_, found, _ = state.GetNode(c1.config.NodeName)
if found {
t.Fatalf("client registered")
}
}
func TestLeader_ReapMember(t *testing.T) {
dir1, s1 := testServer(t)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
dir2, c1 := testClient(t)
defer os.RemoveAll(dir2)
defer c1.Shutdown()
// Wait until we have a leader
time.Sleep(100 * time.Millisecond)
// Try to join
addr := fmt.Sprintf("127.0.0.1:%d",
s1.config.SerfLANConfig.MemberlistConfig.BindPort)
if _, err := c1.JoinLAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
// Wait for registration
time.Sleep(10 * time.Millisecond)
// Should be registered
state := s1.fsm.State()
_, found, _ := state.GetNode(c1.config.NodeName)
if !found {
t.Fatalf("client not registered")
}
// Simulate a node reaping
mems := s1.LANMembers()
var c1mem serf.Member
for _, m := range mems {
if m.Name == c1.config.NodeName {
c1mem = m
c1mem.Status = StatusReap
break
}
}
s1.reconcileCh <- c1mem
// Wait to reconcile
time.Sleep(10 * time.Millisecond)
// Should be deregistered
_, found, _ = state.GetNode(c1.config.NodeName)
if found {
t.Fatalf("client registered")
}
}
func TestLeader_Reconcile_ReapMember(t *testing.T) {
dir1, s1 := testServer(t)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
// Wait until we have a leader
time.Sleep(100 * time.Millisecond)
// Register a non-existing member
dead := structs.RegisterRequest{
Datacenter: s1.config.Datacenter,
Node: "no-longer-around",
Address: "127.1.1.1",
Check: &structs.HealthCheck{
Node: "no-longer-around",
CheckID: SerfCheckID,
Name: SerfCheckName,
Status: structs.HealthCritical,
},
}
var out struct{}
if err := s1.RPC("Catalog.Register", &dead, &out); err != nil {
t.Fatalf("err: %v", err)
}
// Force a reconciliation
if err := s1.reconcile(); err != nil {
t.Fatalf("err: %v", err)
}
// Node should be gone
state := s1.fsm.State()
_, found, _ := state.GetNode("no-longer-around")
if found {
t.Fatalf("client registered")
}
}
func TestLeader_Reconcile(t *testing.T) {
dir1, s1 := testServer(t)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
dir2, c1 := testClient(t)
defer os.RemoveAll(dir2)
defer c1.Shutdown()
// Join before we have a leader, this should cause a reconcile!
addr := fmt.Sprintf("127.0.0.1:%d",
s1.config.SerfLANConfig.MemberlistConfig.BindPort)
if _, err := c1.JoinLAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
// Should not be registered
state := s1.fsm.State()
_, found, _ := state.GetNode(c1.config.NodeName)
if found {
t.Fatalf("client registered")
}
// Wait for leader
time.Sleep(100 * time.Millisecond)
// Should be registered
_, found, _ = state.GetNode(c1.config.NodeName)
if !found {
t.Fatalf("client not registered")
}
}
func TestLeader_LeftServer(t *testing.T) {
dir1, s1 := testServer(t)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
dir2, s2 := testServerDCBootstrap(t, "dc1", false)
defer os.RemoveAll(dir2)
defer s2.Shutdown()
dir3, s3 := testServerDCBootstrap(t, "dc1", false)
defer os.RemoveAll(dir3)
defer s3.Shutdown()
servers := []*Server{s1, s2, s3}
// Try to join
addr := fmt.Sprintf("127.0.0.1:%d",
s1.config.SerfLANConfig.MemberlistConfig.BindPort)
if _, err := s2.JoinLAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
if _, err := s3.JoinLAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
// Wait until we have 3 peers
start := time.Now()
CHECK1:
for _, s := range servers {
peers, _ := s.raftPeers.Peers()
if len(peers) != 3 {
if time.Now().Sub(start) >= 2*time.Second {
t.Fatalf("should have 3 peers")
} else {
time.Sleep(100 * time.Millisecond)
goto CHECK1
}
}
}
// Kill any server
servers[0].Shutdown()
// Wait for failure detection
time.Sleep(500 * time.Millisecond)
// Force remove the non-leader (transition to left state)
if err := servers[1].RemoveFailedNode(servers[0].config.NodeName); err != nil {
t.Fatalf("err: %v", err)
}
// Wait for intent propagation
time.Sleep(500 * time.Millisecond)
// Wait until we have 2 peers
start = time.Now()
CHECK2:
for _, s := range servers[1:] {
peers, _ := s.raftPeers.Peers()
if len(peers) != 2 {
if time.Now().Sub(start) >= 2*time.Second {
t.Fatalf("should have 2 peers")
} else {
time.Sleep(100 * time.Millisecond)
goto CHECK2
}
}
}
}
func TestLeader_MultiBootstrap(t *testing.T) {
dir1, s1 := testServer(t)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
dir2, s2 := testServer(t)
defer os.RemoveAll(dir2)
defer s2.Shutdown()
servers := []*Server{s1, s2}
// Try to join
addr := fmt.Sprintf("127.0.0.1:%d",
s1.config.SerfLANConfig.MemberlistConfig.BindPort)
if _, err := s2.JoinLAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
// Wait until we have 2 peers
start := time.Now()
CHECK1:
for _, s := range servers {
peers := s.serfLAN.Members()
if len(peers) != 2 {
if time.Now().Sub(start) >= 2*time.Second {
t.Fatalf("should have 2 peers")
} else {
time.Sleep(100 * time.Millisecond)
goto CHECK1
}
}
}
// Wait to ensure no peer is added
time.Sleep(200 * time.Millisecond)
// Ensure we don't have multiple raft peers
for _, s := range servers {
peers, _ := s.raftPeers.Peers()
if len(peers) != 1 {
t.Fatalf("should only have 1 raft peer!")
}
}
}