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init.go
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init.go
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// Copyright 2016 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 perfschema
import (
"github.com/pingcap/tidb/meta/autoid"
"github.com/pingcap/tidb/model"
"github.com/pingcap/tidb/mysql"
"github.com/pingcap/tidb/table"
"github.com/pingcap/tidb/types"
"github.com/pingcap/tidb/util/charset"
)
type columnInfo struct {
tp byte
size int
flag uint
deflt interface{}
elems []string
}
var globalStatusCols = []columnInfo{
{mysql.TypeString, 64, mysql.NotNullFlag, `%`, nil},
{mysql.TypeString, 1024, 0, `%`, nil},
}
var sessionStatusCols = []columnInfo{
{mysql.TypeString, 64, mysql.NotNullFlag, `%`, nil},
{mysql.TypeString, 1024, 0, `%`, nil},
}
var setupActorsCols = []columnInfo{
{mysql.TypeString, 60, mysql.NotNullFlag, `%`, nil},
{mysql.TypeString, 32, mysql.NotNullFlag, `%`, nil},
{mysql.TypeString, 16, mysql.NotNullFlag, `%`, nil},
{mysql.TypeEnum, -1, mysql.NotNullFlag, "YES", []string{"YES", "NO"}},
{mysql.TypeEnum, -1, mysql.NotNullFlag, "YES", []string{"YES", "NO"}},
}
var setupObjectsCols = []columnInfo{
{mysql.TypeEnum, -1, mysql.NotNullFlag, "TABLE", []string{"EVENT", "FUNCTION", "TABLE"}},
{mysql.TypeVarchar, 64, 0, `%`, nil},
{mysql.TypeVarchar, 64, mysql.NotNullFlag, `%`, nil},
{mysql.TypeEnum, -1, mysql.NotNullFlag, "YES", []string{"YES", "NO"}},
{mysql.TypeEnum, -1, mysql.NotNullFlag, "YES", []string{"YES", "NO"}},
}
var setupInstrumentsCols = []columnInfo{
{mysql.TypeVarchar, 128, mysql.NotNullFlag, nil, nil},
{mysql.TypeEnum, -1, mysql.NotNullFlag, nil, []string{"YES", "NO"}},
{mysql.TypeEnum, -1, mysql.NotNullFlag, nil, []string{"YES", "NO"}},
}
var setupConsumersCols = []columnInfo{
{mysql.TypeVarchar, 64, mysql.NotNullFlag, nil, nil},
{mysql.TypeEnum, -1, mysql.NotNullFlag, nil, []string{"YES", "NO"}},
}
var setupTimersCols = []columnInfo{
{mysql.TypeVarchar, 64, mysql.NotNullFlag, nil, nil},
{mysql.TypeEnum, -1, mysql.NotNullFlag, nil, []string{"NANOSECOND", "MICROSECOND", "MILLISECOND"}},
}
var stmtsCurrentCols = []columnInfo{
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeVarchar, 128, mysql.NotNullFlag, nil, nil},
{mysql.TypeVarchar, 64, 0, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLongBlob, -1, 0, nil, nil},
{mysql.TypeVarchar, 32, 0, nil, nil},
{mysql.TypeLongBlob, -1, 0, nil, nil},
{mysql.TypeVarchar, 64, 0, nil, nil},
{mysql.TypeVarchar, 64, 0, nil, nil},
{mysql.TypeVarchar, 64, 0, nil, nil},
{mysql.TypeVarchar, 64, 0, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeLong, 11, 0, nil, nil},
{mysql.TypeVarchar, 5, 0, nil, nil},
{mysql.TypeVarchar, 128, 0, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeEnum, -1, 0, nil, []string{"TRANSACTION", "STATEMENT", "STAGE"}},
{mysql.TypeLong, 11, 0, nil, nil},
}
var preparedStmtsInstancesCols = []columnInfo{
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeVarchar, 64, 0, nil, nil},
{mysql.TypeLongBlob, -1, mysql.NotNullFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeEnum, -1, 0, nil, []string{"EVENT", "FUNCTION", "TABLE"}},
{mysql.TypeVarchar, 64, 0, nil, nil},
{mysql.TypeVarchar, 64, 0, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
}
var transCurrentCols = []columnInfo{
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeVarchar, 128, mysql.NotNullFlag, nil, nil},
{mysql.TypeEnum, -1, 0, nil, []string{"ACTIVE", "COMMITTED", "ROLLED BACK"}},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeVarchar, 64, 0, nil, nil},
{mysql.TypeLong, 11, 0, nil, nil},
{mysql.TypeVarchar, 130, 0, nil, nil},
{mysql.TypeVarchar, 130, 0, nil, nil},
{mysql.TypeVarchar, 64, 0, nil, nil},
{mysql.TypeVarchar, 64, 0, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeEnum, -1, 0, nil, []string{"READ ONLY", "READ WRITE"}},
{mysql.TypeVarchar, 64, 0, nil, nil},
{mysql.TypeEnum, -1, mysql.NotNullFlag, nil, []string{"YES", "NO"}},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeEnum, -1, 0, nil, []string{"TRANSACTION", "STATEMENT", "STAGE"}},
}
var stagesCurrentCols = []columnInfo{
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.NotNullFlag | mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeVarchar, 128, mysql.NotNullFlag, nil, nil},
{mysql.TypeVarchar, 64, 0, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeLonglong, 20, mysql.UnsignedFlag, nil, nil},
{mysql.TypeEnum, -1, 0, nil, []string{"TRANSACTION", "STATEMENT", "STAGE"}},
}
func (ps *perfSchema) buildTables() {
tbls := make([]*model.TableInfo, 0, len(ps.tables))
dbID := autoid.GenLocalSchemaID()
for name, meta := range ps.tables {
tbls = append(tbls, meta)
meta.ID = autoid.GenLocalSchemaID()
for _, c := range meta.Columns {
c.ID = autoid.GenLocalSchemaID()
}
ps.mTables[name] = createPerfSchemaTable(meta)
}
ps.dbInfo = &model.DBInfo{
ID: dbID,
Name: model.NewCIStr(Name),
Charset: mysql.DefaultCharset,
Collate: mysql.DefaultCollationName,
Tables: tbls,
}
}
func (ps *perfSchema) buildModel(tbName string, colNames []string, cols []columnInfo) {
rcols := make([]*model.ColumnInfo, len(cols))
for i, col := range cols {
var ci *model.ColumnInfo
if col.elems == nil {
ci = buildUsualColumnInfo(i, colNames[i], col.tp, col.size, col.flag, col.deflt)
} else {
ci = buildEnumColumnInfo(i, colNames[i], col.elems, col.flag, col.deflt)
}
rcols[i] = ci
}
ps.tables[tbName] = &model.TableInfo{
Name: model.NewCIStr(tbName),
Charset: charset.CharsetBin,
Collate: charset.CollationBin,
Columns: rcols,
}
}
func buildUsualColumnInfo(offset int, name string, tp byte, size int, flag uint, def interface{}) *model.ColumnInfo {
mCharset := charset.CharsetBin
mCollation := charset.CharsetBin
if tp == mysql.TypeString || tp == mysql.TypeVarchar || tp == mysql.TypeBlob || tp == mysql.TypeLongBlob {
mCharset = mysql.DefaultCharset
mCollation = mysql.DefaultCollationName
}
if def == nil {
flag |= mysql.NoDefaultValueFlag
}
// TODO: does TypeLongBlob need size?
fieldType := types.FieldType{
Charset: mCharset,
Collate: mCollation,
Tp: tp,
Flen: size,
Flag: flag,
}
colInfo := &model.ColumnInfo{
Name: model.NewCIStr(name),
Offset: offset,
FieldType: fieldType,
DefaultValue: def,
State: model.StatePublic,
}
return colInfo
}
func buildEnumColumnInfo(offset int, name string, elems []string, flag uint, def interface{}) *model.ColumnInfo {
mCharset := charset.CharsetBin
mCollation := charset.CharsetBin
if def == nil {
flag |= mysql.NoDefaultValueFlag
}
fieldType := types.FieldType{
Charset: mCharset,
Collate: mCollation,
Tp: mysql.TypeEnum,
Flag: flag,
Elems: elems,
}
colInfo := &model.ColumnInfo{
Name: model.NewCIStr(name),
Offset: offset,
FieldType: fieldType,
DefaultValue: def,
State: model.StatePublic,
}
return colInfo
}
func (ps *perfSchema) initialize() {
ps.tables = make(map[string]*model.TableInfo)
ps.mTables = make(map[string]table.Table, len(ps.tables))
allColDefs := [][]columnInfo{
globalStatusCols,
sessionStatusCols,
setupActorsCols,
setupObjectsCols,
setupInstrumentsCols,
setupConsumersCols,
setupTimersCols,
stmtsCurrentCols,
stmtsCurrentCols, // same as above
stmtsCurrentCols, // same as above
preparedStmtsInstancesCols,
transCurrentCols,
transCurrentCols, // same as above
transCurrentCols, // same as above
stagesCurrentCols,
stagesCurrentCols, // same as above
stagesCurrentCols, // same as above
}
allColNames := [][]string{
columnGlobalStatus,
columnSessionStatus,
columnSetupActors,
columnSetupObjects,
columnSetupInstruments,
columnSetupConsumers,
columnSetupTimers,
columnStmtsCurrent,
columnStmtsHistory,
columnStmtsHistoryLong,
columnPreparedStmtsInstances,
columnStmtsCurrent,
columnStmtsHistory,
columnStmtsHistoryLong,
columnStagesCurrent,
columnStagesHistory,
columnStagesHistoryLong,
}
// initialize all table, column and result field definitions
for i, def := range allColDefs {
ps.buildModel(perfSchemaTables[i], allColNames[i], def)
}
ps.buildTables()
}
// GetDBMeta returns the DB info.
func (ps *perfSchema) GetDBMeta() *model.DBInfo {
return ps.dbInfo
}
// GetTable returns the table.
func (ps *perfSchema) GetTable(name string) (table.Table, bool) {
tbl, ok := ps.mTables[name]
return tbl, ok
}
// GetTableMeta returns the table info.
func (ps *perfSchema) GetTableMeta(name string) (*model.TableInfo, bool) {
tbl, ok := ps.tables[name]
return tbl, ok
}