/
version.go
365 lines (327 loc) · 12.5 KB
/
version.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
// Copyright 2020 PingCAP, Inc. Licensed under Apache-2.0.
package version
import (
"context"
"fmt"
"math"
"regexp"
"strconv"
"strings"
"github.com/coreos/go-semver/semver"
"github.com/pingcap/errors"
"github.com/pingcap/kvproto/pkg/metapb"
"github.com/pingcap/log"
berrors "github.com/pingcap/tidb/br/pkg/errors"
"github.com/pingcap/tidb/br/pkg/logutil"
"github.com/pingcap/tidb/br/pkg/utils"
"github.com/pingcap/tidb/br/pkg/version/build"
pd "github.com/tikv/pd/client"
"go.uber.org/zap"
)
var (
minTiKVVersion = semver.New("3.1.0-beta.2")
incompatibleTiKVMajor3 = semver.New("3.1.0")
incompatibleTiKVMajor4 = semver.New("4.0.0-rc.1")
compatibleTiFlashMajor3 = semver.New("3.1.0")
compatibleTiFlashMajor4 = semver.New("4.0.0")
versionHash = regexp.MustCompile("-[0-9]+-g[0-9a-f]{7,}")
)
// NextMajorVersion returns the next major version.
func NextMajorVersion() semver.Version {
nextMajorVersion, err := semver.NewVersion(removeVAndHash(build.ReleaseVersion))
if err != nil {
// build.ReleaseVersion is unknown, assuming infinitely-new nightly version.
return semver.Version{Major: math.MaxInt64, PreRelease: "nightly"}
}
nextMajorVersion.BumpMajor()
return *nextMajorVersion
}
// removeVAndHash sanitizes a version string.
func removeVAndHash(v string) string {
v = versionHash.ReplaceAllLiteralString(v, "")
v = strings.TrimSuffix(v, "-dirty")
return strings.TrimPrefix(v, "v")
}
func checkTiFlashVersion(store *metapb.Store) error {
flash, err := semver.NewVersion(removeVAndHash(store.Version))
if err != nil {
return errors.Annotatef(berrors.ErrVersionMismatch, "failed to parse TiFlash %s version %s, err %s",
store.GetPeerAddress(), store.Version, err)
}
if flash.Major == 3 && flash.LessThan(*compatibleTiFlashMajor3) {
return errors.Annotatef(berrors.ErrVersionMismatch, "incompatible TiFlash %s version %s, try update it to %s",
store.GetPeerAddress(), store.Version, compatibleTiFlashMajor3)
}
if flash.Major == 4 && flash.LessThan(*compatibleTiFlashMajor4) {
return errors.Annotatef(berrors.ErrVersionMismatch, "incompatible TiFlash %s version %s, try update it to %s",
store.GetPeerAddress(), store.Version, compatibleTiFlashMajor4)
}
return nil
}
// IsTiFlash tests whether the store is based on tiflash engine.
func IsTiFlash(store *metapb.Store) bool {
for _, label := range store.Labels {
if label.Key == "engine" && label.Value == "tiflash" {
return true
}
}
return false
}
// VerChecker is a callback for the CheckClusterVersion, decides whether the cluster is suitable to execute restore.
// See also: CheckVersionForBackup and CheckVersionForBR.
type VerChecker func(store *metapb.Store, ver *semver.Version) error
// CheckClusterVersion check TiKV version.
func CheckClusterVersion(ctx context.Context, client pd.Client, checker VerChecker) error {
stores, err := client.GetAllStores(ctx, pd.WithExcludeTombstone())
if err != nil {
return errors.Trace(err)
}
for _, s := range stores {
isTiFlash := IsTiFlash(s)
log.Debug("checking compatibility of store in cluster",
zap.Uint64("ID", s.GetId()),
zap.Bool("TiFlash?", isTiFlash),
zap.String("address", s.GetAddress()),
zap.String("version", s.GetVersion()),
)
if isTiFlash {
if err := checkTiFlashVersion(s); err != nil {
return errors.Trace(err)
}
}
tikvVersionString := removeVAndHash(s.Version)
tikvVersion, getVersionErr := semver.NewVersion(tikvVersionString)
if getVersionErr != nil {
return errors.Annotatef(berrors.ErrVersionMismatch, "%s: TiKV node %s version %s is invalid", getVersionErr, s.Address, tikvVersionString)
}
if checkerErr := checker(s, tikvVersion); checkerErr != nil {
return checkerErr
}
}
return nil
}
// CheckVersionForBackup checks the version for backup and
func CheckVersionForBackup(backupVersion *semver.Version) VerChecker {
return func(store *metapb.Store, ver *semver.Version) error {
if backupVersion.Major > ver.Major {
return errors.Annotatef(berrors.ErrVersionMismatch,
"backup with cluster version %s cannot be restored at cluster of version %s: major version mismatches",
backupVersion, ver)
}
return nil
}
}
// CheckVersionForBR checks whether version of the cluster and BR itself is compatible.
func CheckVersionForBR(s *metapb.Store, tikvVersion *semver.Version) error {
BRVersion, err := semver.NewVersion(removeVAndHash(build.ReleaseVersion))
if err != nil {
return errors.Annotatef(berrors.ErrVersionMismatch, "%s: invalid version, please recompile using `git fetch origin --tags && make build`", err)
}
if tikvVersion.Compare(*minTiKVVersion) < 0 {
return errors.Annotatef(berrors.ErrVersionMismatch, "TiKV node %s version %s don't support BR, please upgrade cluster to %s",
s.Address, tikvVersion, build.ReleaseVersion)
}
if tikvVersion.Major != BRVersion.Major {
return errors.Annotatef(berrors.ErrVersionMismatch, "TiKV node %s version %s and BR %s major version mismatch, please use the same version of BR",
s.Address, tikvVersion, build.ReleaseVersion)
}
// BR(https://github.com/pingcap/br/pull/233) and TiKV(https://github.com/tikv/tikv/pull/7241) have breaking changes
// if BR include #233 and TiKV not include #7241, BR will panic TiKV during restore
// These incompatible version is 3.1.0 and 4.0.0-rc.1
if tikvVersion.Major == 3 {
if tikvVersion.Compare(*incompatibleTiKVMajor3) < 0 && BRVersion.Compare(*incompatibleTiKVMajor3) >= 0 {
return errors.Annotatef(berrors.ErrVersionMismatch, "TiKV node %s version %s and BR %s version mismatch, please use the same version of BR",
s.Address, tikvVersion, build.ReleaseVersion)
}
}
if tikvVersion.Major == 4 {
if tikvVersion.Compare(*incompatibleTiKVMajor4) < 0 && BRVersion.Compare(*incompatibleTiKVMajor4) >= 0 {
return errors.Annotatef(berrors.ErrVersionMismatch, "TiKV node %s version %s and BR %s version mismatch, please use the same version of BR",
s.Address, tikvVersion, build.ReleaseVersion)
}
}
// don't warn if we are the master build, which always have the version v4.0.0-beta.2-*
if build.GitBranch != "master" && tikvVersion.Compare(*BRVersion) > 0 {
log.Warn(fmt.Sprintf("BR version is outdated, please consider use version %s of BR", tikvVersion))
}
return nil
}
// CheckVersion checks if the actual version is within [requiredMinVersion, requiredMaxVersion).
func CheckVersion(component string, actual, requiredMinVersion, requiredMaxVersion semver.Version) error {
if actual.Compare(requiredMinVersion) < 0 {
return errors.Annotatef(berrors.ErrVersionMismatch,
"%s version too old, required to be in [%s, %s), found '%s'",
component,
requiredMinVersion,
requiredMaxVersion,
actual,
)
}
// Compare the major version number to make sure beta version does not pass
// the check. This is because beta version may contains incompatible
// changes.
if actual.Major >= requiredMaxVersion.Major {
return errors.Annotatef(berrors.ErrVersionMismatch,
"%s version too new, expected to be within [%s, %d.0.0), found '%s'",
component,
requiredMinVersion,
requiredMaxVersion.Major,
actual,
)
}
return nil
}
// ExtractTiDBVersion extracts TiDB version from TiDB SQL `version()` outputs.
func ExtractTiDBVersion(version string) (*semver.Version, error) {
// version format: "5.7.10-TiDB-v2.1.0-rc.1-7-g38c939f"
// ^~~~~~~~~^ we only want this part
// version format: "5.7.10-TiDB-v2.0.4-1-g06a0bf5"
// ^~~~^
// version format: "5.7.10-TiDB-v2.0.7"
// ^~~~^
// version format: "5.7.25-TiDB-v3.0.0-beta-211-g09beefbe0-dirty"
// ^~~~~~~~~^
// The version is generated by `git describe --tags` on the TiDB repository.
versions := strings.Split(strings.TrimSuffix(version, "-dirty"), "-")
end := len(versions)
switch end {
case 3, 4:
case 5, 6:
end -= 2
default:
return nil, errors.Annotatef(berrors.ErrVersionMismatch, "not a valid TiDB version: %s", version)
}
rawVersion := strings.Join(versions[2:end], "-")
rawVersion = strings.TrimPrefix(rawVersion, "v")
return semver.NewVersion(rawVersion)
}
// CheckTiDBVersion is equals to ExtractTiDBVersion followed by CheckVersion.
func CheckTiDBVersion(versionStr string, requiredMinVersion, requiredMaxVersion semver.Version) error {
serverInfo := ParseServerInfo(versionStr)
if serverInfo.ServerType != ServerTypeTiDB {
return errors.Errorf("server with version '%s' is not TiDB", versionStr)
}
return CheckVersion("TiDB", *serverInfo.ServerVersion, requiredMinVersion, requiredMaxVersion)
}
// NormalizeBackupVersion normalizes the version string from backupmeta.
func NormalizeBackupVersion(version string) *semver.Version {
// We need to unquote here because we get the version from PD HTTP API,
// which returns quoted string.
trimmedVerStr := strings.TrimSpace(version)
unquotedVerStr, err := strconv.Unquote(trimmedVerStr)
if err != nil {
unquotedVerStr = trimmedVerStr
}
normalizedVerStr := strings.TrimSpace(unquotedVerStr)
ver, err := semver.NewVersion(normalizedVerStr)
if err != nil {
log.Warn("cannot parse backup version", zap.String("version", normalizedVerStr), zap.Error(err))
}
return ver
}
// FetchVersion gets the version information from the database server
//
// NOTE: the executed query will be:
// - `select tidb_version()` if target db is tidb
// - `select version()` if target db is not tidb
func FetchVersion(ctx context.Context, db utils.QueryExecutor) (string, error) {
var versionInfo string
const queryTiDB = "SELECT tidb_version();"
tidbRow := db.QueryRowContext(ctx, queryTiDB)
err := tidbRow.Scan(&versionInfo)
if err == nil {
return versionInfo, nil
}
log.L().Warn("select tidb_version() failed, will fallback to 'select version();'", logutil.ShortError(err))
const query = "SELECT version();"
row := db.QueryRowContext(ctx, query)
err = row.Scan(&versionInfo)
if err != nil {
return "", errors.Annotatef(err, "sql: %s", query)
}
return versionInfo, nil
}
type ServerType int
const (
// ServerTypeUnknown represents unknown server type
ServerTypeUnknown = iota
// ServerTypeMySQL represents MySQL server type
ServerTypeMySQL
// ServerTypeMariaDB represents MariaDB server type
ServerTypeMariaDB
// ServerTypeTiDB represents TiDB server type
ServerTypeTiDB
// ServerTypeAll represents All server types
ServerTypeAll
)
var serverTypeString = []string{
ServerTypeUnknown: "Unknown",
ServerTypeMySQL: "MySQL",
ServerTypeMariaDB: "MariaDB",
ServerTypeTiDB: "TiDB",
}
// String implements Stringer.String
func (s ServerType) String() string {
if s >= ServerTypeAll {
return ""
}
return serverTypeString[s]
}
// ServerInfo is the combination of ServerType and ServerInfo
type ServerInfo struct {
ServerType ServerType
ServerVersion *semver.Version
HasTiKV bool
}
var (
mysqlVersionRegex = regexp.MustCompile(`^\d+\.\d+\.\d+([0-9A-Za-z-]+(\.[0-9A-Za-z-]+)*)?`)
// `select version()` result
tidbVersionRegex = regexp.MustCompile(`-[v]?\d+\.\d+\.\d+([0-9A-Za-z-]+(\.[0-9A-Za-z-]+)*)?`)
// `select tidb_version()` result
tidbReleaseVersionRegex = regexp.MustCompile(`v\d+\.\d+\.\d+([0-9A-Za-z-]+(\.[0-9A-Za-z-]+)*)?`)
)
// ParseServerInfo parses exported server type and version info from version string
func ParseServerInfo(src string) ServerInfo {
lowerCase := strings.ToLower(src)
serverInfo := ServerInfo{}
isReleaseVersion := false
switch {
case strings.Contains(lowerCase, "release version:"):
// this version string is tidb release version
serverInfo.ServerType = ServerTypeTiDB
isReleaseVersion = true
case strings.Contains(lowerCase, "tidb"):
serverInfo.ServerType = ServerTypeTiDB
case strings.Contains(lowerCase, "mariadb"):
serverInfo.ServerType = ServerTypeMariaDB
case mysqlVersionRegex.MatchString(lowerCase):
serverInfo.ServerType = ServerTypeMySQL
default:
serverInfo.ServerType = ServerTypeUnknown
}
var versionStr string
if serverInfo.ServerType == ServerTypeTiDB {
if isReleaseVersion {
versionStr = tidbReleaseVersionRegex.FindString(src)
} else {
versionStr = tidbVersionRegex.FindString(src)[1:]
}
versionStr = strings.TrimPrefix(versionStr, "v")
} else {
versionStr = mysqlVersionRegex.FindString(src)
}
var err error
serverInfo.ServerVersion, err = semver.NewVersion(versionStr)
if err != nil {
log.L().Warn("fail to parse version",
zap.String("version", versionStr))
}
var version string
if serverInfo.ServerVersion != nil {
version = serverInfo.ServerVersion.String()
}
log.L().Info("detect server version",
zap.String("type", serverInfo.ServerType.String()),
zap.String("version", version))
return serverInfo
}