forked from vitessio/vitess
/
streamlogger.go
188 lines (171 loc) · 4.55 KB
/
streamlogger.go
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// Copyright 2012, 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 tabletserver
import (
"encoding/json"
"fmt"
"net/url"
"strings"
"time"
log "github.com/golang/glog"
"github.com/youtube/vitess/go/sqltypes"
"github.com/youtube/vitess/go/streamlog"
)
var SqlQueryLogger = streamlog.New("SqlQuery", 50)
const (
QUERY_SOURCE_ROWCACHE = 1 << iota
QUERY_SOURCE_CONSOLIDATOR
QUERY_SOURCE_MYSQL
)
type sqlQueryStats struct {
Method string
PlanType string
OriginalSql string
BindVariables map[string]interface{}
rewrittenSqls []string
RowsAffected int
NumberOfQueries int
StartTime time.Time
EndTime time.Time
MysqlResponseTime time.Duration
WaitingForConnection time.Duration
CacheHits int64
CacheAbsent int64
CacheMisses int64
CacheInvalidations int64
QuerySources byte
Rows [][]sqltypes.Value
context *Context
sensitiveMode bool
}
func newSqlQueryStats(methodName string, context *Context, sensitiveMode bool) *sqlQueryStats {
return &sqlQueryStats{
Method: methodName,
StartTime: time.Now(),
context: context,
sensitiveMode: sensitiveMode,
}
}
func (stats *sqlQueryStats) Send() {
stats.EndTime = time.Now()
SqlQueryLogger.Send(stats)
}
func (stats *sqlQueryStats) AddRewrittenSql(sql string) {
if stats.sensitiveMode {
return
}
stats.rewrittenSqls = append(stats.rewrittenSqls, sql)
}
func (stats *sqlQueryStats) TotalTime() time.Duration {
return stats.EndTime.Sub(stats.StartTime)
}
// RewrittenSql returns a semicolon separated list of SQL statements
// that were executed.
func (stats *sqlQueryStats) RewrittenSql() string {
if stats.sensitiveMode {
return ""
}
return strings.Join(stats.rewrittenSqls, "; ")
}
// SizeOfResponse returns the approximate size of the response in
// bytes (this does not take in account BSON encoding). It will return
// 0 for streaming requests.
func (stats *sqlQueryStats) SizeOfResponse() int {
if stats.Rows == nil {
return 0
}
size := 0
for _, row := range stats.Rows {
for _, field := range row {
size += len(field.Raw())
}
}
return size
}
// FmtBindVariables returns the map of bind variables as JSON. For
// values that are strings or byte slices it only reports their type
// and length.
func (stats *sqlQueryStats) FmtBindVariables(full bool) string {
if stats.sensitiveMode {
return ""
}
var out map[string]interface{}
if full {
out = stats.BindVariables
} else {
// NOTE(szopa): I am getting rid of potentially large bind
// variables.
out = make(map[string]interface{})
for k, v := range stats.BindVariables {
switch val := v.(type) {
case string:
out[k] = fmt.Sprintf("string %v", len(val))
case []byte:
out[k] = fmt.Sprintf("bytes %v", len(val))
default:
out[k] = v
}
}
}
b, err := json.Marshal(out)
if err != nil {
log.Warningf("could not marshal %q", stats.BindVariables)
return ""
}
return string(b)
}
// FmtQuerySources returns a comma separated list of query
// sources. If there were no query sources, it returns the string
// "none".
func (stats *sqlQueryStats) FmtQuerySources() string {
if stats.QuerySources == 0 {
return "none"
}
sources := make([]string, 3)
n := 0
if stats.QuerySources&QUERY_SOURCE_MYSQL != 0 {
sources[n] = "mysql"
n++
}
if stats.QuerySources&QUERY_SOURCE_ROWCACHE != 0 {
sources[n] = "rowcache"
n++
}
if stats.QuerySources&QUERY_SOURCE_CONSOLIDATOR != 0 {
sources[n] = "consolidator"
n++
}
return strings.Join(sources[:n], ",")
}
func (log *sqlQueryStats) RemoteAddr() string {
return log.context.RemoteAddr
}
func (log *sqlQueryStats) Username() string {
return log.context.Username
}
// String returns a tab separated list of logged fields.
func (log *sqlQueryStats) Format(params url.Values) string {
_, fullBindParams := params["full"]
return fmt.Sprintf(
"%v\t%v\t%v\t%v\t%v\t%.6f\t%v\t%q\t%v\t%v\t%q\t%v\t%.6f\t%.6f\t%v\t%v\t%v\t%v\t%v\t\n",
log.Method,
log.RemoteAddr(),
log.Username(),
log.StartTime.Format(time.StampMicro),
log.EndTime.Format(time.StampMicro),
log.TotalTime().Seconds(),
log.PlanType,
log.OriginalSql,
log.FmtBindVariables(fullBindParams),
log.NumberOfQueries,
log.RewrittenSql(),
log.FmtQuerySources(),
log.MysqlResponseTime.Seconds(),
log.WaitingForConnection.Seconds(),
log.SizeOfResponse(),
log.CacheHits,
log.CacheMisses,
log.CacheAbsent,
log.CacheInvalidations)
}