*: refine some error code

domain/domain.go

@@ -815,8 +815,6 @@ func (do *Domain) LoadPrivilegeLoop(ctx sessionctx.Context) error {
 			metrics.LoadPrivilegeCounter.WithLabelValues(metrics.RetLabel(err)).Inc()
 			if err != nil {
 				logutil.BgLogger().Error("load privilege failed", zap.Error(err))
-			} else {
-				logutil.BgLogger().Debug("reload privilege success")
 			}
 		}
 	}()

go.mod

@@ -37,7 +37,7 @@ require (
 	github.com/pingcap/goleveldb v0.0.0-20171020122428-b9ff6c35079e
 	github.com/pingcap/kvproto v0.0.0-20191202044712-32be31591b03
 	github.com/pingcap/log v0.0.0-20191012051959-b742a5d432e9
-	github.com/pingcap/parser v0.0.0-20191210055545-753e13bfdbf0
+	github.com/pingcap/parser v0.0.0-20191210060830-bdf23a7ade01
 	github.com/pingcap/pd v1.1.0-beta.0.20191210055626-676ddd3fbd2d
 	github.com/pingcap/sysutil v0.0.0-20191126040022-986c5b3ed9a3
 	github.com/pingcap/tidb-tools v3.0.6-0.20191106033616-90632dda3863+incompatible

go.sum

@@ -190,8 +190,8 @@ github.com/pingcap/kvproto v0.0.0-20191202044712-32be31591b03/go.mod h1:WWLmULLO
 github.com/pingcap/log v0.0.0-20190715063458-479153f07ebd/go.mod h1:WpHUKhNZ18v116SvGrmjkA9CBhYmuUTKL+p8JC9ANEw=
 github.com/pingcap/log v0.0.0-20191012051959-b742a5d432e9 h1:AJD9pZYm72vMgPcQDww9rkZ1DnWfl0pXV3BOWlkYIjA=
 github.com/pingcap/log v0.0.0-20191012051959-b742a5d432e9/go.mod h1:4rbK1p9ILyIfb6hU7OG2CiWSqMXnp3JMbiaVJ6mvoY8=
-github.com/pingcap/parser v0.0.0-20191210055545-753e13bfdbf0 h1:BmayUSQpOj05pzVprTZ9HCoarUlap4gYNjlHijNxx8w=
-github.com/pingcap/parser v0.0.0-20191210055545-753e13bfdbf0/go.mod h1:1FNvfp9+J0wvc4kl8eGNh7Rqrxveg15jJoWo/a0uHwA=
+github.com/pingcap/parser v0.0.0-20191210060830-bdf23a7ade01 h1:q1rGnV/296//bArDP7cDWWaSrhaeEKZY+gIo+Jb0Gyk=
+github.com/pingcap/parser v0.0.0-20191210060830-bdf23a7ade01/go.mod h1:1FNvfp9+J0wvc4kl8eGNh7Rqrxveg15jJoWo/a0uHwA=
 github.com/pingcap/pd v1.1.0-beta.0.20191210055626-676ddd3fbd2d h1:0uUwCayeh1U4r1n7kb4gHf2ZbiI9fuVtXPCEpb2piBY=
 github.com/pingcap/pd v1.1.0-beta.0.20191210055626-676ddd3fbd2d/go.mod h1:Z/VMtXHpkOP+MnYnk4TL5VHc3ZwO1qHwc89zDuf5n8Q=
 github.com/pingcap/sysutil v0.0.0-20191126040022-986c5b3ed9a3 h1:HCNif3lukL83gNC2EBAoh2Qbz36+2p0bm0LjgnNfl1s=

meta/autoid/autoid.go

@@ -22,7 +22,6 @@ import (
 	"github.com/cznic/mathutil"
 	"github.com/pingcap/errors"
 	"github.com/pingcap/failpoint"
-	"github.com/pingcap/parser/terror"
 	"github.com/pingcap/tidb/kv"
 	"github.com/pingcap/tidb/meta"
 	"github.com/pingcap/tidb/metrics"
@@ -52,8 +51,6 @@ const (
 // Test needs to change it, so it's a variable.
 var step = int64(30000)
 
-var errInvalidTableID = terror.ClassAutoid.New(codeInvalidTableID, "invalid TableID")
-
 // Allocator is an auto increment id generator.
 // Just keep id unique actually.
 type Allocator interface {
@@ -262,9 +259,6 @@ func NewAllocator(store kv.Storage, dbID int64, isUnsigned bool) Allocator {
 	}
 }
 
-// codeInvalidTableID is the code of autoid error.
-const codeInvalidTableID terror.ErrCode = 1
-
 // Alloc implements autoid.Allocator Alloc interface.
 func (alloc *allocator) Alloc(tableID int64, n uint64) (int64, int64, error) {
 	if tableID == 0 {

meta/autoid/errors.go

@@ -20,6 +20,7 @@ import (
 
 // Error instances.
 var (
+	errInvalidTableID    = terror.ClassAutoid.New(mysql.ErrInvalidTableID, mysql.MySQLErrName[mysql.ErrInvalidTableID])
 	ErrAutoincReadFailed = terror.ClassAutoid.New(mysql.ErrAutoincReadFailed, mysql.MySQLErrName[mysql.ErrAutoincReadFailed])
 	ErrWrongAutoKey      = terror.ClassAutoid.New(mysql.ErrWrongAutoKey, mysql.MySQLErrName[mysql.ErrWrongAutoKey])
 )
@@ -29,6 +30,7 @@ func init() {
 	tableMySQLErrCodes := map[terror.ErrCode]uint16{
 		mysql.ErrAutoincReadFailed: mysql.ErrAutoincReadFailed,
 		mysql.ErrWrongAutoKey:      mysql.ErrWrongAutoKey,
+		mysql.ErrInvalidTableID:    mysql.ErrInvalidTableID,
 	}
 	terror.ErrClassToMySQLCodes[terror.ClassAutoid] = tableMySQLErrCodes
 }

privilege/privileges/cache.go

@@ -29,9 +29,10 @@ import (
 	"github.com/pingcap/tidb/sessionctx"
 	"github.com/pingcap/tidb/types"
 	"github.com/pingcap/tidb/util/chunk"
+	"github.com/pingcap/tidb/util/logutil"
 	"github.com/pingcap/tidb/util/sqlexec"
 	"github.com/pingcap/tidb/util/stringutil"
-	log "github.com/sirupsen/logrus"
+	"go.uber.org/zap"
 )
 
 var (
@@ -184,47 +185,53 @@ func (p *MySQLPrivilege) FindRole(user string, host string, role *auth.RoleIdent
 func (p *MySQLPrivilege) LoadAll(ctx sessionctx.Context) error {
 	err := p.LoadUserTable(ctx)
 	if err != nil {
-		return errors.Trace(err)
+		logutil.BgLogger().Warn("load mysql.user fail", zap.Error(err))
+		return errLoadPrivilege.FastGen("mysql.user")
 	}
 
 	err = p.LoadDBTable(ctx)
 	if err != nil {
 		if !noSuchTable(err) {
-			return errors.Trace(err)
+			logutil.BgLogger().Warn("load mysql.db fail", zap.Error(err))
+			return errLoadPrivilege.FastGen("mysql.db")
 		}
-		log.Warn("mysql.db maybe missing")
+		logutil.BgLogger().Warn("mysql.db maybe missing")
 	}
 
 	err = p.LoadTablesPrivTable(ctx)
 	if err != nil {
 		if !noSuchTable(err) {
-			return errors.Trace(err)
+			logutil.BgLogger().Warn("load mysql.tables_priv fail", zap.Error(err))
+			return errLoadPrivilege.FastGen("mysql.tables_priv")
 		}
-		log.Warn("mysql.tables_priv missing")
+		logutil.BgLogger().Warn("mysql.tables_priv missing")
 	}
 
 	err = p.LoadDefaultRoles(ctx)
 	if err != nil {
 		if !noSuchTable(err) {
-			return errors.Trace(err)
+			logutil.BgLogger().Warn("load mysql.roles", zap.Error(err))
+			return errLoadPrivilege.FastGen("mysql.roles")
 		}
-		log.Warn("mysql.default_roles missing")
+		logutil.BgLogger().Warn("mysql.default_roles missing")
 	}
 
 	err = p.LoadColumnsPrivTable(ctx)
 	if err != nil {
 		if !noSuchTable(err) {
-			return errors.Trace(err)
+			logutil.BgLogger().Warn("load mysql.columns_priv", zap.Error(err))
+			return errLoadPrivilege.FastGen("mysql.columns_priv")
 		}
-		log.Warn("mysql.columns_priv missing")
+		logutil.BgLogger().Warn("mysql.columns_priv missing")
 	}
 
 	err = p.LoadRoleGraph(ctx)
 	if err != nil {
 		if !noSuchTable(err) {
-			return errors.Trace(err)
+			logutil.BgLogger().Warn("load mysql.role_edges", zap.Error(err))
+			return errLoadPrivilege.FastGen("mysql.role_edges")
 		}
-		log.Warn("mysql.role_edges missing")
+		logutil.BgLogger().Warn("mysql.role_edges missing")
 	}
 	return nil
 }
@@ -566,7 +573,7 @@ func decodeSetToPrivilege(s types.Set) mysql.PrivilegeType {
 	for _, str := range strings.Split(s.Name, ",") {
 		priv, ok := mysql.SetStr2Priv[str]
 		if !ok {
-			log.Warn("unsupported privilege type:", str)
+			logutil.BgLogger().Warn("unsupported privilege", zap.String("type", str))
 			continue
 		}
 		ret |= priv
@@ -1053,7 +1060,7 @@ func (h *Handle) Update(ctx sessionctx.Context) error {
 	var priv MySQLPrivilege
 	err := priv.LoadAll(ctx)
 	if err != nil {
-		return errors.Trace(err)
+		return err
 	}
 
 	h.priv.Store(&priv)

privilege/privileges/errors.go

@@ -18,19 +18,17 @@ import (
 	"github.com/pingcap/parser/terror"
 )
 
-// privilege error codes.
-const (
-	codeInvalidPrivilegeType terror.ErrCode = 1
-)
-
 var (
-	errInvalidPrivilegeType = terror.ClassPrivilege.New(codeInvalidPrivilegeType, "unknown privilege type %s")
+	errInvalidPrivilegeType = terror.ClassPrivilege.New(mysql.ErrInvalidPrivilegeType, mysql.MySQLErrName[mysql.ErrInvalidPrivilegeType])
 	errNonexistingGrant     = terror.ClassPrivilege.New(mysql.ErrNonexistingGrant, mysql.MySQLErrName[mysql.ErrNonexistingGrant])
+	errLoadPrivilege        = terror.ClassPrivilege.New(mysql.ErrLoadPrivilege, mysql.MySQLErrName[mysql.ErrLoadPrivilege])
 )
 
 func init() {
 	privilegeMySQLErrCodes := map[terror.ErrCode]uint16{
-		mysql.ErrNonexistingGrant: mysql.ErrNonexistingGrant,
+		mysql.ErrNonexistingGrant:     mysql.ErrNonexistingGrant,
+		mysql.ErrLoadPrivilege:        mysql.ErrLoadPrivilege,
+		mysql.ErrInvalidPrivilegeType: mysql.ErrInvalidPrivilegeType,
 	}
 	terror.ErrClassToMySQLCodes[terror.ClassPrivilege] = privilegeMySQLErrCodes
 }

server/server.go

@@ -86,9 +86,9 @@ func init() {
 }
 
 var (
-	errUnknownFieldType  = terror.ClassServer.New(codeUnknownFieldType, "unknown field type")
-	errInvalidSequence   = terror.ClassServer.New(codeInvalidSequence, "invalid sequence")
-	errInvalidType       = terror.ClassServer.New(codeInvalidType, "invalid type")
+	errUnknownFieldType  = terror.ClassServer.New(mysql.ErrUnknownFieldType, mysql.MySQLErrName[mysql.ErrUnknownFieldType])
+	errInvalidSequence   = terror.ClassServer.New(mysql.ErrInvalidSequence, mysql.MySQLErrName[mysql.ErrInvalidSequence])
+	errInvalidType       = terror.ClassServer.New(mysql.ErrInvalidType, mysql.MySQLErrName[mysql.ErrInvalidType])
 	errNotAllowedCommand = terror.ClassServer.New(mysql.ErrNotAllowedCommand, mysql.MySQLErrName[mysql.ErrNotAllowedCommand])
 	errAccessDenied      = terror.ClassServer.New(mysql.ErrAccessDenied, mysql.MySQLErrName[mysql.ErrAccessDenied])
 )
@@ -647,6 +647,9 @@ func init() {
 	serverMySQLErrCodes := map[terror.ErrCode]uint16{
 		mysql.ErrNotAllowedCommand: mysql.ErrNotAllowedCommand,
 		mysql.ErrAccessDenied:      mysql.ErrAccessDenied,
+		mysql.ErrUnknownFieldType:  mysql.ErrUnknownFieldType,
+		mysql.ErrInvalidSequence:   mysql.ErrInvalidSequence,
+		mysql.ErrInvalidType:       mysql.ErrInvalidType,
 	}
 	terror.ErrClassToMySQLCodes[terror.ClassServer] = serverMySQLErrCodes
 }

sessionctx/variable/session.go

@@ -44,19 +44,13 @@ import (
 	"github.com/pingcap/tidb/util/timeutil"
 )
 
-const (
-	codeCantGetValidID terror.ErrCode = 1
-	codeCantSetToNull  terror.ErrCode = 2
-	codeSnapshotTooOld terror.ErrCode = 3
-)
-
 var preparedStmtCount int64
 
 // Error instances.
 var (
-	errCantGetValidID = terror.ClassVariable.New(codeCantGetValidID, "cannot get valid auto-increment id in retry")
-	ErrCantSetToNull  = terror.ClassVariable.New(codeCantSetToNull, "cannot set variable to null")
-	ErrSnapshotTooOld = terror.ClassVariable.New(codeSnapshotTooOld, "snapshot is older than GC safe point %s")
+	errCantGetValidID = terror.ClassVariable.New(mysql.ErrCantGetValidID, mysql.MySQLErrName[mysql.ErrCantGetValidID])
+	ErrCantSetToNull  = terror.ClassVariable.New(mysql.ErrCantSetToNull, mysql.MySQLErrName[mysql.ErrCantSetToNull])
+	ErrSnapshotTooOld = terror.ClassVariable.New(mysql.ErrSnapshotTooOld, mysql.MySQLErrName[mysql.ErrSnapshotTooOld])
 )
 
 // RetryInfo saves retry information.

sessionctx/variable/sysvar.go

@@ -84,6 +84,9 @@ func init() {
 
 	// Register terror to mysql error map.
 	mySQLErrCodes := map[terror.ErrCode]uint16{
+		mysql.ErrCantGetValidID:              mysql.ErrCantGetValidID,
+		mysql.ErrCantSetToNull:               mysql.ErrCantSetToNull,
+		mysql.ErrSnapshotTooOld:              mysql.ErrSnapshotTooOld,
 		mysql.ErrUnsupportedValueForVar:      mysql.ErrUnsupportedValueForVar,
 		mysql.ErrUnknownSystemVariable:       mysql.ErrUnknownSystemVariable,
 		mysql.ErrIncorrectGlobalLocalVar:     mysql.ErrIncorrectGlobalLocalVar,