/
slow_log.go
383 lines (368 loc) · 14.1 KB
/
slow_log.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
// Copyright 2019 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package infoschema
import (
"bufio"
"context"
"io"
"os"
"strconv"
"strings"
"time"
"github.com/pingcap/errors"
"github.com/pingcap/parser/mysql"
"github.com/pingcap/tidb/sessionctx"
"github.com/pingcap/tidb/sessionctx/variable"
"github.com/pingcap/tidb/types"
"github.com/pingcap/tidb/util/execdetails"
"github.com/pingcap/tidb/util/hack"
"github.com/pingcap/tidb/util/logutil"
"go.uber.org/zap"
)
var slowQueryCols = []columnInfo{
{variable.SlowLogTimeStr, mysql.TypeTimestamp, 26, 0, nil, nil},
{variable.SlowLogTxnStartTSStr, mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{variable.SlowLogUserStr, mysql.TypeVarchar, 64, 0, nil, nil},
{variable.SlowLogConnIDStr, mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{variable.SlowLogQueryTimeStr, mysql.TypeDouble, 22, 0, nil, nil},
{variable.SlowLogParseTimeStr, mysql.TypeDouble, 22, 0, nil, nil},
{variable.SlowLogCompileTimeStr, mysql.TypeDouble, 22, 0, nil, nil},
{execdetails.PreWriteTimeStr, mysql.TypeDouble, 22, 0, nil, nil},
{execdetails.CommitTimeStr, mysql.TypeDouble, 22, 0, nil, nil},
{execdetails.GetCommitTSTimeStr, mysql.TypeDouble, 22, 0, nil, nil},
{execdetails.CommitBackoffTimeStr, mysql.TypeDouble, 22, 0, nil, nil},
{execdetails.ResolveLockTimeStr, mysql.TypeDouble, 22, 0, nil, nil},
{execdetails.LocalLatchWaitTimeStr, mysql.TypeDouble, 22, 0, nil, nil},
{execdetails.WriteKeysStr, mysql.TypeLonglong, 22, 0, nil, nil},
{execdetails.WriteSizeStr, mysql.TypeLonglong, 22, 0, nil, nil},
{execdetails.PrewriteRegionStr, mysql.TypeLonglong, 22, 0, nil, nil},
{execdetails.TxnRetryStr, mysql.TypeLonglong, 22, 0, nil, nil},
{execdetails.ProcessTimeStr, mysql.TypeDouble, 22, 0, nil, nil},
{execdetails.WaitTimeStr, mysql.TypeDouble, 22, 0, nil, nil},
{execdetails.BackoffTimeStr, mysql.TypeDouble, 22, 0, nil, nil},
{execdetails.RequestCountStr, mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{execdetails.TotalKeysStr, mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{execdetails.ProcessKeysStr, mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{variable.SlowLogDBStr, mysql.TypeVarchar, 64, 0, nil, nil},
{variable.SlowLogIndexNamesStr, mysql.TypeVarchar, 100, 0, nil, nil},
{variable.SlowLogIsInternalStr, mysql.TypeTiny, 1, 0, nil, nil},
{variable.SlowLogDigestStr, mysql.TypeVarchar, 64, 0, nil, nil},
{variable.SlowLogStatsInfoStr, mysql.TypeVarchar, 512, 0, nil, nil},
{variable.SlowLogCopProcAvg, mysql.TypeDouble, 22, 0, nil, nil},
{variable.SlowLogCopProcP90, mysql.TypeDouble, 22, 0, nil, nil},
{variable.SlowLogCopProcMax, mysql.TypeDouble, 22, 0, nil, nil},
{variable.SlowLogCopWaitAvg, mysql.TypeDouble, 22, 0, nil, nil},
{variable.SlowLogCopWaitP90, mysql.TypeDouble, 22, 0, nil, nil},
{variable.SlowLogCopWaitMax, mysql.TypeDouble, 22, 0, nil, nil},
{variable.SlowLogMemMax, mysql.TypeLonglong, 20, 0, nil, nil},
{variable.SlowLogSucc, mysql.TypeTiny, 1, 0, nil, nil},
{variable.SlowLogPrevStmt, mysql.TypeLongBlob, types.UnspecifiedLength, 0, nil, nil},
{variable.SlowLogQuerySQLStr, mysql.TypeLongBlob, types.UnspecifiedLength, 0, nil, nil},
}
func dataForSlowLog(ctx sessionctx.Context) ([][]types.Datum, error) {
return parseSlowLogFile(ctx.GetSessionVars().Location(), ctx.GetSessionVars().SlowQueryFile)
}
// parseSlowLogFile uses to parse slow log file.
// TODO: Support parse multiple log-files.
func parseSlowLogFile(tz *time.Location, filePath string) ([][]types.Datum, error) {
file, err := os.Open(filePath)
if err != nil {
return nil, errors.Trace(err)
}
defer func() {
if err = file.Close(); err != nil {
logutil.Logger(context.Background()).Error("close slow log file failed.", zap.String("file", filePath), zap.Error(err))
}
}()
return ParseSlowLog(tz, bufio.NewReader(file))
}
// ParseSlowLog exports for testing.
// TODO: optimize for parse huge log-file.
func ParseSlowLog(tz *time.Location, reader *bufio.Reader) ([][]types.Datum, error) {
var rows [][]types.Datum
startFlag := false
var st *slowQueryTuple
for {
lineByte, err := getOneLine(reader)
if err != nil {
if err == io.EOF {
return rows, nil
}
return rows, err
}
line := string(hack.String(lineByte))
// Check slow log entry start flag.
if !startFlag && strings.HasPrefix(line, variable.SlowLogStartPrefixStr) {
st = &slowQueryTuple{}
err = st.setFieldValue(tz, variable.SlowLogTimeStr, line[len(variable.SlowLogStartPrefixStr):])
if err != nil {
return rows, err
}
startFlag = true
continue
}
if startFlag {
// Parse slow log field.
if strings.HasPrefix(line, variable.SlowLogPrefixStr) {
line = line[len(variable.SlowLogPrefixStr):]
if strings.HasPrefix(line, variable.SlowLogPrevStmtPrefix) {
st.prevStmt = line[len(variable.SlowLogPrevStmtPrefix):]
} else {
fieldValues := strings.Split(line, " ")
for i := 0; i < len(fieldValues)-1; i += 2 {
field := fieldValues[i]
if strings.HasSuffix(field, ":") {
field = field[:len(field)-1]
}
err = st.setFieldValue(tz, field, fieldValues[i+1])
if err != nil {
return rows, err
}
}
}
} else if strings.HasSuffix(line, variable.SlowLogSQLSuffixStr) {
// Get the sql string, and mark the start flag to false.
err = st.setFieldValue(tz, variable.SlowLogQuerySQLStr, string(hack.Slice(line)))
if err != nil {
return rows, err
}
rows = append(rows, st.convertToDatumRow())
startFlag = false
} else {
startFlag = false
}
}
}
}
func getOneLine(reader *bufio.Reader) ([]byte, error) {
var resByte []byte
lineByte, isPrefix, err := reader.ReadLine()
if isPrefix {
// Need to read more data.
resByte = make([]byte, len(lineByte), len(lineByte)*2)
} else {
resByte = make([]byte, len(lineByte))
}
// Use copy here to avoid shallow copy problem.
copy(resByte, lineByte)
if err != nil {
return resByte, err
}
var tempLine []byte
for isPrefix {
tempLine, isPrefix, err = reader.ReadLine()
resByte = append(resByte, tempLine...)
// Use the max value of max_allowed_packet to check the single line length.
if len(resByte) > int(variable.MaxOfMaxAllowedPacket) {
return resByte, errors.Errorf("single line length exceeds limit: %v", variable.MaxOfMaxAllowedPacket)
}
if err != nil {
return resByte, err
}
}
return resByte, err
}
type slowQueryTuple struct {
time time.Time
txnStartTs uint64
user string
host string
connID uint64
queryTime float64
parseTime float64
compileTime float64
preWriteTime float64
commitTime float64
getCommitTSTime float64
commitBackoffTime float64
resolveLockTime float64
localLatchWaitTime float64
writeKeys uint64
writeSize uint64
prewriteRegion uint64
txnRetry uint64
processTime float64
waitTime float64
backOffTime float64
requestCount uint64
totalKeys uint64
processKeys uint64
db string
indexIDs string
digest string
statsInfo string
avgProcessTime float64
p90ProcessTime float64
maxProcessTime float64
maxProcessAddress string
avgWaitTime float64
p90WaitTime float64
maxWaitTime float64
maxWaitAddress string
memMax int64
prevStmt string
sql string
isInternal bool
succ bool
}
func (st *slowQueryTuple) setFieldValue(tz *time.Location, field, value string) error {
var err error
switch field {
case variable.SlowLogTimeStr:
st.time, err = ParseTime(value)
if err != nil {
break
}
if st.time.Location() != tz {
st.time = st.time.In(tz)
}
case variable.SlowLogTxnStartTSStr:
st.txnStartTs, err = strconv.ParseUint(value, 10, 64)
case variable.SlowLogUserStr:
st.user = value
case variable.SlowLogConnIDStr:
st.connID, err = strconv.ParseUint(value, 10, 64)
case variable.SlowLogQueryTimeStr:
st.queryTime, err = strconv.ParseFloat(value, 64)
case variable.SlowLogParseTimeStr:
st.parseTime, err = strconv.ParseFloat(value, 64)
case variable.SlowLogCompileTimeStr:
st.compileTime, err = strconv.ParseFloat(value, 64)
case execdetails.PreWriteTimeStr:
st.preWriteTime, err = strconv.ParseFloat(value, 64)
case execdetails.CommitTimeStr:
st.commitTime, err = strconv.ParseFloat(value, 64)
case execdetails.GetCommitTSTimeStr:
st.getCommitTSTime, err = strconv.ParseFloat(value, 64)
case execdetails.CommitBackoffTimeStr:
st.commitBackoffTime, err = strconv.ParseFloat(value, 64)
case execdetails.ResolveLockTimeStr:
st.resolveLockTime, err = strconv.ParseFloat(value, 64)
case execdetails.LocalLatchWaitTimeStr:
st.localLatchWaitTime, err = strconv.ParseFloat(value, 64)
case execdetails.WriteKeysStr:
st.writeKeys, err = strconv.ParseUint(value, 10, 64)
case execdetails.WriteSizeStr:
st.writeSize, err = strconv.ParseUint(value, 10, 64)
case execdetails.PrewriteRegionStr:
st.prewriteRegion, err = strconv.ParseUint(value, 10, 64)
case execdetails.TxnRetryStr:
st.txnRetry, err = strconv.ParseUint(value, 10, 64)
case execdetails.ProcessTimeStr:
st.processTime, err = strconv.ParseFloat(value, 64)
case execdetails.WaitTimeStr:
st.waitTime, err = strconv.ParseFloat(value, 64)
case execdetails.BackoffTimeStr:
st.backOffTime, err = strconv.ParseFloat(value, 64)
case execdetails.RequestCountStr:
st.requestCount, err = strconv.ParseUint(value, 10, 64)
case execdetails.TotalKeysStr:
st.totalKeys, err = strconv.ParseUint(value, 10, 64)
case execdetails.ProcessKeysStr:
st.processKeys, err = strconv.ParseUint(value, 10, 64)
case variable.SlowLogDBStr:
st.db = value
case variable.SlowLogIndexNamesStr:
st.indexIDs = value
case variable.SlowLogIsInternalStr:
st.isInternal = value == "true"
case variable.SlowLogDigestStr:
st.digest = value
case variable.SlowLogStatsInfoStr:
st.statsInfo = value
case variable.SlowLogCopProcAvg:
st.avgProcessTime, err = strconv.ParseFloat(value, 64)
case variable.SlowLogCopProcP90:
st.p90ProcessTime, err = strconv.ParseFloat(value, 64)
case variable.SlowLogCopProcMax:
st.maxProcessTime, err = strconv.ParseFloat(value, 64)
case variable.SlowLogCopWaitAvg:
st.avgWaitTime, err = strconv.ParseFloat(value, 64)
case variable.SlowLogCopWaitP90:
st.p90WaitTime, err = strconv.ParseFloat(value, 64)
case variable.SlowLogCopWaitMax:
st.maxWaitTime, err = strconv.ParseFloat(value, 64)
case variable.SlowLogMemMax:
st.memMax, err = strconv.ParseInt(value, 10, 64)
case variable.SlowLogSucc:
st.succ, err = strconv.ParseBool(value)
case variable.SlowLogQuerySQLStr:
st.sql = value
}
if err != nil {
return errors.Wrap(err, "parse slow log failed `"+field+"` error")
}
return nil
}
func (st *slowQueryTuple) convertToDatumRow() []types.Datum {
record := make([]types.Datum, 0, len(slowQueryCols))
record = append(record, types.NewTimeDatum(types.Time{
Time: types.FromGoTime(st.time),
Type: mysql.TypeDatetime,
Fsp: types.MaxFsp,
}))
record = append(record, types.NewUintDatum(st.txnStartTs))
record = append(record, types.NewStringDatum(st.user))
record = append(record, types.NewUintDatum(st.connID))
record = append(record, types.NewFloat64Datum(st.queryTime))
record = append(record, types.NewFloat64Datum(st.parseTime))
record = append(record, types.NewFloat64Datum(st.compileTime))
record = append(record, types.NewFloat64Datum(st.preWriteTime))
record = append(record, types.NewFloat64Datum(st.commitTime))
record = append(record, types.NewFloat64Datum(st.getCommitTSTime))
record = append(record, types.NewFloat64Datum(st.commitBackoffTime))
record = append(record, types.NewFloat64Datum(st.resolveLockTime))
record = append(record, types.NewFloat64Datum(st.localLatchWaitTime))
record = append(record, types.NewUintDatum(st.writeKeys))
record = append(record, types.NewUintDatum(st.writeSize))
record = append(record, types.NewUintDatum(st.prewriteRegion))
record = append(record, types.NewUintDatum(st.txnRetry))
record = append(record, types.NewFloat64Datum(st.processTime))
record = append(record, types.NewFloat64Datum(st.waitTime))
record = append(record, types.NewFloat64Datum(st.backOffTime))
record = append(record, types.NewUintDatum(st.requestCount))
record = append(record, types.NewUintDatum(st.totalKeys))
record = append(record, types.NewUintDatum(st.processKeys))
record = append(record, types.NewStringDatum(st.db))
record = append(record, types.NewStringDatum(st.indexIDs))
record = append(record, types.NewDatum(st.isInternal))
record = append(record, types.NewStringDatum(st.digest))
record = append(record, types.NewStringDatum(st.statsInfo))
record = append(record, types.NewFloat64Datum(st.avgProcessTime))
record = append(record, types.NewFloat64Datum(st.p90ProcessTime))
record = append(record, types.NewFloat64Datum(st.maxProcessTime))
record = append(record, types.NewFloat64Datum(st.avgWaitTime))
record = append(record, types.NewFloat64Datum(st.p90WaitTime))
record = append(record, types.NewFloat64Datum(st.maxWaitTime))
record = append(record, types.NewIntDatum(st.memMax))
if st.succ {
record = append(record, types.NewIntDatum(1))
} else {
record = append(record, types.NewIntDatum(0))
}
record = append(record, types.NewStringDatum(st.prevStmt))
record = append(record, types.NewStringDatum(st.sql))
return record
}
// ParseTime exports for testing.
func ParseTime(s string) (time.Time, error) {
t, err := time.Parse(logutil.SlowLogTimeFormat, s)
if err != nil {
// This is for compatibility.
t, err = time.Parse(logutil.OldSlowLogTimeFormat, s)
if err != nil {
err = errors.Errorf("string \"%v\" doesn't has a prefix that matches format \"%v\", err: %v", s, logutil.SlowLogTimeFormat, err)
}
}
return t, err
}