b6a95a8cb3
* Dropped unused codekit config * Integrated dynamic and static bindata for public * Ignore public bindata * Add a general generate make task * Integrated flexible public assets into web command * Updated vendoring, added all missiong govendor deps * Made the linter happy with the bindata and dynamic code * Moved public bindata definition to modules directory * Ignoring the new bindata path now * Updated to the new public modules import path * Updated public bindata command and drop the new prefix
218 lines
7.4 KiB
Go
218 lines
7.4 KiB
Go
// Copyright 2013 The ql Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSES/QL-LICENSE file.
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// Copyright 2015 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package tidb
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import (
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"fmt"
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"runtime/debug"
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"strings"
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"github.com/juju/errors"
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"github.com/ngaut/log"
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"github.com/pingcap/tidb/infoschema"
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"github.com/pingcap/tidb/mysql"
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"github.com/pingcap/tidb/sessionctx/variable"
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)
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const (
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// CreateUserTable is the SQL statement creates User table in system db.
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CreateUserTable = `CREATE TABLE if not exists mysql.user (
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Host CHAR(64),
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User CHAR(16),
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Password CHAR(41),
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Select_priv ENUM('N','Y') NOT NULL DEFAULT 'N',
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Insert_priv ENUM('N','Y') NOT NULL DEFAULT 'N',
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Update_priv ENUM('N','Y') NOT NULL DEFAULT 'N',
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Delete_priv ENUM('N','Y') NOT NULL DEFAULT 'N',
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Create_priv ENUM('N','Y') NOT NULL DEFAULT 'N',
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Drop_priv ENUM('N','Y') NOT NULL DEFAULT 'N',
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Grant_priv ENUM('N','Y') NOT NULL DEFAULT 'N',
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Alter_priv ENUM('N','Y') NOT NULL DEFAULT 'N',
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Show_db_priv ENUM('N','Y') NOT NULL DEFAULT 'N',
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Execute_priv ENUM('N','Y') NOT NULL DEFAULT 'N',
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Index_priv ENUM('N','Y') NOT NULL DEFAULT 'N',
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Create_user_priv ENUM('N','Y') NOT NULL DEFAULT 'N',
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PRIMARY KEY (Host, User));`
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// CreateDBPrivTable is the SQL statement creates DB scope privilege table in system db.
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CreateDBPrivTable = `CREATE TABLE if not exists mysql.db (
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Host CHAR(60),
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DB CHAR(64),
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User CHAR(16),
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Select_priv ENUM('N','Y') Not Null DEFAULT 'N',
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Insert_priv ENUM('N','Y') Not Null DEFAULT 'N',
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Update_priv ENUM('N','Y') Not Null DEFAULT 'N',
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Delete_priv ENUM('N','Y') Not Null DEFAULT 'N',
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Create_priv ENUM('N','Y') Not Null DEFAULT 'N',
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Drop_priv ENUM('N','Y') Not Null DEFAULT 'N',
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Grant_priv ENUM('N','Y') Not Null DEFAULT 'N',
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Index_priv ENUM('N','Y') Not Null DEFAULT 'N',
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Alter_priv ENUM('N','Y') Not Null DEFAULT 'N',
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Execute_priv ENUM('N','Y') Not Null DEFAULT 'N',
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PRIMARY KEY (Host, DB, User));`
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// CreateTablePrivTable is the SQL statement creates table scope privilege table in system db.
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CreateTablePrivTable = `CREATE TABLE if not exists mysql.tables_priv (
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Host CHAR(60),
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DB CHAR(64),
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User CHAR(16),
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Table_name CHAR(64),
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Grantor CHAR(77),
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Timestamp Timestamp DEFAULT CURRENT_TIMESTAMP,
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Table_priv SET('Select','Insert','Update','Delete','Create','Drop','Grant', 'Index','Alter'),
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Column_priv SET('Select','Insert','Update'),
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PRIMARY KEY (Host, DB, User, Table_name));`
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// CreateColumnPrivTable is the SQL statement creates column scope privilege table in system db.
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CreateColumnPrivTable = `CREATE TABLE if not exists mysql.columns_priv(
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Host CHAR(60),
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DB CHAR(64),
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User CHAR(16),
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Table_name CHAR(64),
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Column_name CHAR(64),
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Timestamp Timestamp DEFAULT CURRENT_TIMESTAMP,
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Column_priv SET('Select','Insert','Update'),
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PRIMARY KEY (Host, DB, User, Table_name, Column_name));`
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// CreateGloablVariablesTable is the SQL statement creates global variable table in system db.
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// TODO: MySQL puts GLOBAL_VARIABLES table in INFORMATION_SCHEMA db.
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// INFORMATION_SCHEMA is a virtual db in TiDB. So we put this table in system db.
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// Maybe we will put it back to INFORMATION_SCHEMA.
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CreateGloablVariablesTable = `CREATE TABLE if not exists mysql.GLOBAL_VARIABLES(
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VARIABLE_NAME VARCHAR(64) Not Null PRIMARY KEY,
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VARIABLE_VALUE VARCHAR(1024) DEFAULT Null);`
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// CreateTiDBTable is the SQL statement creates a table in system db.
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// This table is a key-value struct contains some information used by TiDB.
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// Currently we only put bootstrapped in it which indicates if the system is already bootstrapped.
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CreateTiDBTable = `CREATE TABLE if not exists mysql.tidb(
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VARIABLE_NAME VARCHAR(64) Not Null PRIMARY KEY,
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VARIABLE_VALUE VARCHAR(1024) DEFAULT Null,
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COMMENT VARCHAR(1024));`
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)
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// Bootstrap initiates system DB for a store.
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func bootstrap(s Session) {
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b, err := checkBootstrapped(s)
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if err != nil {
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log.Fatal(err)
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}
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if b {
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return
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}
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doDDLWorks(s)
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doDMLWorks(s)
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}
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const (
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bootstrappedVar = "bootstrapped"
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bootstrappedVarTrue = "True"
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)
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func checkBootstrapped(s Session) (bool, error) {
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// Check if system db exists.
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_, err := s.Execute(fmt.Sprintf("USE %s;", mysql.SystemDB))
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if err != nil && infoschema.DatabaseNotExists.NotEqual(err) {
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log.Fatal(err)
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}
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// Check bootstrapped variable value in TiDB table.
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v, err := checkBootstrappedVar(s)
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if err != nil {
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return false, errors.Trace(err)
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}
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return v, nil
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}
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func checkBootstrappedVar(s Session) (bool, error) {
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sql := fmt.Sprintf(`SELECT VARIABLE_VALUE FROM %s.%s WHERE VARIABLE_NAME="%s"`,
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mysql.SystemDB, mysql.TiDBTable, bootstrappedVar)
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rs, err := s.Execute(sql)
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if err != nil {
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if infoschema.TableNotExists.Equal(err) {
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return false, nil
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}
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return false, errors.Trace(err)
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}
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if len(rs) != 1 {
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return false, errors.New("Wrong number of Recordset")
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}
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r := rs[0]
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row, err := r.Next()
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if err != nil || row == nil {
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return false, errors.Trace(err)
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}
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isBootstrapped := row.Data[0].GetString() == bootstrappedVarTrue
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if isBootstrapped {
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// Make sure that doesn't affect the following operations.
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if err = s.FinishTxn(false); err != nil {
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return false, errors.Trace(err)
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}
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}
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return isBootstrapped, nil
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}
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// Execute DDL statements in bootstrap stage.
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func doDDLWorks(s Session) {
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// Create a test database.
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mustExecute(s, "CREATE DATABASE IF NOT EXISTS test")
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// Create system db.
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mustExecute(s, fmt.Sprintf("CREATE DATABASE IF NOT EXISTS %s;", mysql.SystemDB))
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// Create user table.
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mustExecute(s, CreateUserTable)
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// Create privilege tables.
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mustExecute(s, CreateDBPrivTable)
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mustExecute(s, CreateTablePrivTable)
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mustExecute(s, CreateColumnPrivTable)
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// Create global systemt variable table.
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mustExecute(s, CreateGloablVariablesTable)
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// Create TiDB table.
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mustExecute(s, CreateTiDBTable)
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}
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// Execute DML statements in bootstrap stage.
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// All the statements run in a single transaction.
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func doDMLWorks(s Session) {
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mustExecute(s, "BEGIN")
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// Insert a default user with empty password.
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mustExecute(s, `INSERT INTO mysql.user VALUES
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("%", "root", "", "Y", "Y", "Y", "Y", "Y", "Y", "Y", "Y", "Y", "Y", "Y", "Y")`)
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// Init global system variables table.
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values := make([]string, 0, len(variable.SysVars))
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for k, v := range variable.SysVars {
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value := fmt.Sprintf(`("%s", "%s")`, strings.ToLower(k), v.Value)
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values = append(values, value)
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}
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sql := fmt.Sprintf("INSERT INTO %s.%s VALUES %s;", mysql.SystemDB, mysql.GlobalVariablesTable,
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strings.Join(values, ", "))
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mustExecute(s, sql)
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sql = fmt.Sprintf(`INSERT INTO %s.%s VALUES("%s", "%s", "Bootstrap flag. Do not delete.")
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ON DUPLICATE KEY UPDATE VARIABLE_VALUE="%s"`,
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mysql.SystemDB, mysql.TiDBTable, bootstrappedVar, bootstrappedVarTrue, bootstrappedVarTrue)
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mustExecute(s, sql)
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mustExecute(s, "COMMIT")
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}
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func mustExecute(s Session, sql string) {
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_, err := s.Execute(sql)
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if err != nil {
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debug.PrintStack()
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log.Fatal(err)
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}
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}
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