forked from vitessio/vitess
-
Notifications
You must be signed in to change notification settings - Fork 0
/
query.go
420 lines (384 loc) · 15.1 KB
/
query.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
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
// Copyright 2015, Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package vtctl
import (
"encoding/json"
"flag"
"fmt"
"strconv"
"strings"
"time"
"github.com/youtube/vitess/go/vt/tabletserver/tabletconn"
"github.com/youtube/vitess/go/vt/topo"
"github.com/youtube/vitess/go/vt/topo/topoproto"
"github.com/youtube/vitess/go/vt/vtgate/vtgateconn"
"github.com/youtube/vitess/go/vt/wrangler"
"golang.org/x/net/context"
pb "github.com/youtube/vitess/go/vt/proto/topodata"
)
// This file contains the query command group for vtctl.
const queriesGroupName = "Queries"
func init() {
addCommandGroup(queriesGroupName)
// VtGate commands
addCommand(queriesGroupName, command{
"VtGateExecute",
commandVtGateExecute,
"-server <vtgate> [-bind_variables <JSON map>] [-connect_timeout <connect timeout>] [-tablet_type <tablet type>] <sql>",
"Executes the given SQL query with the provided bound variables against the vtgate server."})
addCommand(queriesGroupName, command{
"VtGateExecuteShard",
commandVtGateExecuteShard,
"-server <vtgate> -keyspace <keyspace> -shards <shard0>,<shard1>,... [-bind_variables <JSON map>] [-connect_timeout <connect timeout>] [-tablet_type <tablet type>] <sql>",
"Executes the given SQL query with the provided bound variables against the vtgate server."})
addCommand(queriesGroupName, command{
"VtGateSplitQuery",
commandVtGateSplitQuery,
"-server <vtgate> -keyspace <keyspace> [-split_column <split_column>] -split_count <split_count> [-bind_variables <JSON map>] [-connect_timeout <connect timeout>] <sql>",
"Executes the SplitQuery computation for the given SQL query with the provided bound variables against the vtgate server (this is the base query for Map-Reduce workloads, and is provided here for debug / test purposes)."})
// VtTablet commands
addCommand(queriesGroupName, command{
"VtTabletExecute",
commandVtTabletExecute,
"[-bind_variables <JSON map>] [-connect_timeout <connect timeout>] [-transaction_id <transaction_id>] [-tablet_type <tablet_type>] -keyspace <keyspace> -shard <shard> <tablet alias> <sql>",
"Executes the given query on the given tablet."})
addCommand(queriesGroupName, command{
"VtTabletBegin",
commandVtTabletBegin,
"[-connect_timeout <connect timeout>] [-tablet_type <tablet_type>] -keyspace <keyspace> -shard <shard> <tablet alias>",
"Starts a transaction on the provided server."})
addCommand(queriesGroupName, command{
"VtTabletCommit",
commandVtTabletCommit,
"[-connect_timeout <connect timeout>] [-tablet_type <tablet_type>] -keyspace <keyspace> -shard <shard> <tablet alias> <transaction_id>",
"Commits a transaction on the provided server."})
addCommand(queriesGroupName, command{
"VtTabletRollback",
commandVtTabletRollback,
"[-connect_timeout <connect timeout>] [-tablet_type <tablet_type>] -keyspace <keyspace> -shard <shard> <tablet alias> <transaction_id>",
"Rollbacks a transaction on the provided server."})
addCommand(queriesGroupName, command{
"VtTabletStreamHealth",
commandVtTabletStreamHealth,
"[-count <count, default 1>] [-connect_timeout <connect timeout>] <tablet alias>",
"Executes the StreamHealth streaming query to a vttablet process. Will stop after getting <count> answers."})
}
type bindvars map[string]interface{}
func (bv *bindvars) String() string {
b, err := json.Marshal(bv)
if err != nil {
return err.Error()
}
return string(b)
}
func (bv *bindvars) Set(s string) (err error) {
err = json.Unmarshal([]byte(s), &bv)
if err != nil {
return fmt.Errorf("error json-unmarshaling '%v': %v", s, err)
}
// json reads all numbers as float64
// So, we just ditch floats for bindvars
for k, v := range *bv {
if f, ok := v.(float64); ok {
if f > 0 {
(*bv)[k] = uint64(f)
} else {
(*bv)[k] = int64(f)
}
}
}
return nil
}
// For internal flag compatibility
func (bv *bindvars) Get() interface{} {
return bv
}
func newBindvars(subFlags *flag.FlagSet) *bindvars {
var bv bindvars
subFlags.Var(&bv, "bind_variables", "bind variables as a json list")
return &bv
}
func commandVtGateExecute(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
server := subFlags.String("server", "", "VtGate server to connect to")
bindVariables := newBindvars(subFlags)
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vtgate client")
tabletType := subFlags.String("tablet_type", "master", "tablet type to query")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 1 {
return fmt.Errorf("the <sql> argument is required for the VtGateExecute command")
}
t, err := parseTabletType(*tabletType, []pb.TabletType{pb.TabletType_MASTER, pb.TabletType_REPLICA, pb.TabletType_RDONLY})
if err != nil {
return err
}
vtgateConn, err := vtgateconn.Dial(ctx, *server, *connectTimeout)
if err != nil {
return fmt.Errorf("error connecting to vtgate '%v': %v", *server, err)
}
defer vtgateConn.Close()
qr, err := vtgateConn.Execute(ctx, subFlags.Arg(0), *bindVariables, t)
if err != nil {
return fmt.Errorf("Execute failed: %v", err)
}
return printJSON(wr, qr)
}
func commandVtGateExecuteShard(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
server := subFlags.String("server", "", "VtGate server to connect to")
bindVariables := newBindvars(subFlags)
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vtgate client")
tabletType := subFlags.String("tablet_type", "master", "tablet type to query")
keyspace := subFlags.String("keyspace", "", "keyspace to send query to")
shardsStr := subFlags.String("shards", "", "comma-separated list of shards to send query to")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 1 {
return fmt.Errorf("the <sql> argument is required for the VtGateExecuteShard command")
}
t, err := parseTabletType(*tabletType, []pb.TabletType{pb.TabletType_MASTER, pb.TabletType_REPLICA, pb.TabletType_RDONLY})
if err != nil {
return err
}
var shards []string
if *shardsStr != "" {
shards = strings.Split(*shardsStr, ",")
}
vtgateConn, err := vtgateconn.Dial(ctx, *server, *connectTimeout)
if err != nil {
return fmt.Errorf("error connecting to vtgate '%v': %v", *server, err)
}
defer vtgateConn.Close()
qr, err := vtgateConn.ExecuteShards(ctx, subFlags.Arg(0), *keyspace, shards, *bindVariables, t)
if err != nil {
return fmt.Errorf("Execute failed: %v", err)
}
return printJSON(wr, qr)
}
func commandVtGateSplitQuery(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
server := subFlags.String("server", "", "VtGate server to connect to")
bindVariables := newBindvars(subFlags)
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vtgate client")
splitColumn := subFlags.String("split_column", "", "force the use of this column to split the query")
splitCount := subFlags.Int("split_count", 16, "number of splits to generate")
keyspace := subFlags.String("keyspace", "", "keyspace to send query to")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 1 {
return fmt.Errorf("the <sql> argument is required for the VtGateSplitQuery command")
}
vtgateConn, err := vtgateconn.Dial(ctx, *server, *connectTimeout)
if err != nil {
return fmt.Errorf("error connecting to vtgate '%v': %v", *server, err)
}
defer vtgateConn.Close()
r, err := vtgateConn.SplitQuery(ctx, *keyspace, subFlags.Arg(0), *bindVariables, *splitColumn, *splitCount)
if err != nil {
return fmt.Errorf("SplitQuery failed: %v", err)
}
return printJSON(wr, r)
}
func commandVtTabletExecute(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
transactionID := subFlags.Int("transaction_id", 0, "transaction id to use, if inside a transaction.")
bindVariables := newBindvars(subFlags)
keyspace := subFlags.String("keyspace", "", "keyspace the tablet belongs to")
shard := subFlags.String("shard", "", "shard the tablet belongs to")
tabletType := subFlags.String("tablet_type", "unknown", "tablet type we expect from the tablet (use unknown to use sessionId)")
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vttablet client")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 2 {
return fmt.Errorf("the <tablet_alias> and <sql> arguments are required for the VtTabletExecute command")
}
tt, err := topoproto.ParseTabletType(*tabletType)
if err != nil {
return err
}
tabletAlias, err := topoproto.ParseTabletAlias(subFlags.Arg(0))
if err != nil {
return err
}
tabletInfo, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return err
}
ep, err := topo.TabletEndPoint(tabletInfo.Tablet)
if err != nil {
return fmt.Errorf("cannot get EndPoint from tablet record: %v", err)
}
conn, err := tabletconn.GetDialer()(ctx, ep, *keyspace, *shard, tt, *connectTimeout)
if err != nil {
return fmt.Errorf("cannot connect to tablet %v: %v", tabletAlias, err)
}
defer conn.Close()
qr, err := conn.Execute(ctx, subFlags.Arg(1), *bindVariables, int64(*transactionID))
if err != nil {
return fmt.Errorf("Execute failed: %v", err)
}
return printJSON(wr, qr)
}
func commandVtTabletBegin(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
keyspace := subFlags.String("keyspace", "", "keyspace the tablet belongs to")
shard := subFlags.String("shard", "", "shard the tablet belongs to")
tabletType := subFlags.String("tablet_type", "unknown", "tablet type we expect from the tablet (use unknown to use sessionId)")
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vttablet client")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 1 {
return fmt.Errorf("the <tablet_alias> argument is required for the VtTabletBegin command")
}
tt, err := topoproto.ParseTabletType(*tabletType)
if err != nil {
return err
}
tabletAlias, err := topoproto.ParseTabletAlias(subFlags.Arg(0))
if err != nil {
return err
}
tabletInfo, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return err
}
ep, err := topo.TabletEndPoint(tabletInfo.Tablet)
if err != nil {
return fmt.Errorf("cannot get EndPoint from tablet record: %v", err)
}
conn, err := tabletconn.GetDialer()(ctx, ep, *keyspace, *shard, tt, *connectTimeout)
if err != nil {
return fmt.Errorf("cannot connect to tablet %v: %v", tabletAlias, err)
}
defer conn.Close()
transactionID, err := conn.Begin(ctx)
if err != nil {
return fmt.Errorf("Begin failed: %v", err)
}
result := map[string]int64{
"transaction_id": transactionID,
}
return printJSON(wr, result)
}
func commandVtTabletCommit(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
keyspace := subFlags.String("keyspace", "", "keyspace the tablet belongs to")
shard := subFlags.String("shard", "", "shard the tablet belongs to")
tabletType := subFlags.String("tablet_type", "unknown", "tablet type we expect from the tablet (use unknown to use sessionId)")
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vttablet client")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 2 {
return fmt.Errorf("the <tablet_alias> and <transaction_id> arguments are required for the VtTabletCommit command")
}
transactionID, err := strconv.ParseInt(subFlags.Arg(1), 10, 64)
if err != nil {
return err
}
tt, err := topoproto.ParseTabletType(*tabletType)
if err != nil {
return err
}
tabletAlias, err := topoproto.ParseTabletAlias(subFlags.Arg(0))
if err != nil {
return err
}
tabletInfo, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return err
}
ep, err := topo.TabletEndPoint(tabletInfo.Tablet)
if err != nil {
return fmt.Errorf("cannot get EndPoint from tablet record: %v", err)
}
conn, err := tabletconn.GetDialer()(ctx, ep, *keyspace, *shard, tt, *connectTimeout)
if err != nil {
return fmt.Errorf("cannot connect to tablet %v: %v", tabletAlias, err)
}
defer conn.Close()
return conn.Commit(ctx, transactionID)
}
func commandVtTabletRollback(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
keyspace := subFlags.String("keyspace", "", "keyspace the tablet belongs to")
shard := subFlags.String("shard", "", "shard the tablet belongs to")
tabletType := subFlags.String("tablet_type", "unknown", "tablet type we expect from the tablet (use unknown to use sessionId)")
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vttablet client")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 2 {
return fmt.Errorf("the <tablet_alias> and <transaction_id> arguments are required for the VtTabletRollback command")
}
transactionID, err := strconv.ParseInt(subFlags.Arg(1), 10, 64)
if err != nil {
return err
}
tt, err := topoproto.ParseTabletType(*tabletType)
if err != nil {
return err
}
tabletAlias, err := topoproto.ParseTabletAlias(subFlags.Arg(0))
if err != nil {
return err
}
tabletInfo, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return err
}
ep, err := topo.TabletEndPoint(tabletInfo.Tablet)
if err != nil {
return fmt.Errorf("cannot get EndPoint from tablet record: %v", err)
}
conn, err := tabletconn.GetDialer()(ctx, ep, *keyspace, *shard, tt, *connectTimeout)
if err != nil {
return fmt.Errorf("cannot connect to tablet %v: %v", tabletAlias, err)
}
defer conn.Close()
return conn.Rollback(ctx, transactionID)
}
func commandVtTabletStreamHealth(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
count := subFlags.Int("count", 1, "number of responses to wait for")
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vttablet client")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 1 {
return fmt.Errorf("The <tablet alias> argument is required for the VtTabletStreamHealth command.")
}
tabletAlias, err := topoproto.ParseTabletAlias(subFlags.Arg(0))
if err != nil {
return err
}
tabletInfo, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return err
}
ep, err := topo.TabletEndPoint(tabletInfo.Tablet)
if err != nil {
return fmt.Errorf("cannot get EndPoint from tablet record: %v", err)
}
// pass in a non-UNKNOWN tablet type to not use sessionId
conn, err := tabletconn.GetDialer()(ctx, ep, "", "", pb.TabletType_MASTER, *connectTimeout)
if err != nil {
return fmt.Errorf("cannot connect to tablet %v: %v", tabletAlias, err)
}
stream, errFunc, err := conn.StreamHealth(ctx)
if err != nil {
return err
}
for i := 0; i < *count; i++ {
shr, ok := <-stream
if !ok {
return fmt.Errorf("stream ended early: %v", errFunc())
}
data, err := json.Marshal(shr)
if err != nil {
wr.Logger().Errorf("cannot json-marshal structure: %v", err)
} else {
wr.Logger().Printf("%v\n", string(data))
}
}
return nil
}