mirror of
https://codeberg.org/forgejo/forgejo.git
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Noteable additions: - `redefines-builtin-id` forbid variable names that shadow go builtins - `empty-lines` remove unnecessary empty lines that `gofumpt` does not remove for some reason - `superfluous-else` eliminate more superfluous `else` branches Rules are also sorted alphabetically and I cleaned up various parts of `.golangci.yml`. (cherry picked from commit 74f0c84fa4245a20ce6fb87dac1faf2aeeded2a2) Conflicts: .golangci.yml apply the linter recommendations to Forgejo code as well
540 lines
18 KiB
Go
540 lines
18 KiB
Go
// Copyright 2022 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package base
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import (
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"context"
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"database/sql"
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"errors"
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"fmt"
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"os"
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"path"
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"reflect"
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"regexp"
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"strings"
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"time"
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"code.gitea.io/gitea/models/db"
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"code.gitea.io/gitea/models/unittest"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/util"
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"xorm.io/xorm"
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"xorm.io/xorm/schemas"
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)
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// RecreateTables will recreate the tables for the provided beans using the newly provided bean definition and move all data to that new table
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// WARNING: YOU MUST PROVIDE THE FULL BEAN DEFINITION
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func RecreateTables(beans ...any) func(*xorm.Engine) error {
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return func(x *xorm.Engine) error {
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sess := x.NewSession()
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defer sess.Close()
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if err := sess.Begin(); err != nil {
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return err
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}
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sess = sess.StoreEngine("InnoDB")
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for _, bean := range beans {
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log.Info("Recreating Table: %s for Bean: %s", x.TableName(bean), reflect.Indirect(reflect.ValueOf(bean)).Type().Name())
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if err := RecreateTable(sess, bean); err != nil {
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return err
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}
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}
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return sess.Commit()
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}
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}
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// RecreateTable will recreate the table using the newly provided bean definition and move all data to that new table
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// WARNING: YOU MUST PROVIDE THE FULL BEAN DEFINITION
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// WARNING: YOU MUST COMMIT THE SESSION AT THE END
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func RecreateTable(sess *xorm.Session, bean any) error {
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// TODO: This will not work if there are foreign keys
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tableName := sess.Engine().TableName(bean)
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tempTableName := fmt.Sprintf("tmp_recreate__%s", tableName)
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// We need to move the old table away and create a new one with the correct columns
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// We will need to do this in stages to prevent data loss
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//
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// First create the temporary table
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if err := sess.Table(tempTableName).CreateTable(bean); err != nil {
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log.Error("Unable to create table %s. Error: %v", tempTableName, err)
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return err
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}
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if err := sess.Table(tempTableName).CreateUniques(bean); err != nil {
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log.Error("Unable to create uniques for table %s. Error: %v", tempTableName, err)
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return err
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}
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if err := sess.Table(tempTableName).CreateIndexes(bean); err != nil {
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log.Error("Unable to create indexes for table %s. Error: %v", tempTableName, err)
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return err
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}
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// Work out the column names from the bean - these are the columns to select from the old table and install into the new table
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table, err := sess.Engine().TableInfo(bean)
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if err != nil {
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log.Error("Unable to get table info. Error: %v", err)
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return err
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}
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newTableColumns := table.Columns()
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if len(newTableColumns) == 0 {
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return fmt.Errorf("no columns in new table")
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}
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hasID := false
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for _, column := range newTableColumns {
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hasID = hasID || (column.IsPrimaryKey && column.IsAutoIncrement)
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}
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sqlStringBuilder := &strings.Builder{}
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_, _ = sqlStringBuilder.WriteString("INSERT INTO `")
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_, _ = sqlStringBuilder.WriteString(tempTableName)
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_, _ = sqlStringBuilder.WriteString("` (`")
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_, _ = sqlStringBuilder.WriteString(newTableColumns[0].Name)
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_, _ = sqlStringBuilder.WriteString("`")
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for _, column := range newTableColumns[1:] {
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_, _ = sqlStringBuilder.WriteString(", `")
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_, _ = sqlStringBuilder.WriteString(column.Name)
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_, _ = sqlStringBuilder.WriteString("`")
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}
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_, _ = sqlStringBuilder.WriteString(")")
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_, _ = sqlStringBuilder.WriteString(" SELECT ")
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if newTableColumns[0].Default != "" {
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_, _ = sqlStringBuilder.WriteString("COALESCE(`")
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_, _ = sqlStringBuilder.WriteString(newTableColumns[0].Name)
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_, _ = sqlStringBuilder.WriteString("`, ")
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_, _ = sqlStringBuilder.WriteString(newTableColumns[0].Default)
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_, _ = sqlStringBuilder.WriteString(")")
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} else {
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_, _ = sqlStringBuilder.WriteString("`")
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_, _ = sqlStringBuilder.WriteString(newTableColumns[0].Name)
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_, _ = sqlStringBuilder.WriteString("`")
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}
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for _, column := range newTableColumns[1:] {
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if column.Default != "" {
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_, _ = sqlStringBuilder.WriteString(", COALESCE(`")
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_, _ = sqlStringBuilder.WriteString(column.Name)
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_, _ = sqlStringBuilder.WriteString("`, ")
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_, _ = sqlStringBuilder.WriteString(column.Default)
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_, _ = sqlStringBuilder.WriteString(")")
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} else {
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_, _ = sqlStringBuilder.WriteString(", `")
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_, _ = sqlStringBuilder.WriteString(column.Name)
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_, _ = sqlStringBuilder.WriteString("`")
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}
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}
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_, _ = sqlStringBuilder.WriteString(" FROM `")
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_, _ = sqlStringBuilder.WriteString(tableName)
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_, _ = sqlStringBuilder.WriteString("`")
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if _, err := sess.Exec(sqlStringBuilder.String()); err != nil {
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log.Error("Unable to set copy data in to temp table %s. Error: %v", tempTableName, err)
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return err
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}
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switch {
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case setting.Database.Type.IsSQLite3():
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// SQLite will drop all the constraints on the old table
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if _, err := sess.Exec(fmt.Sprintf("DROP TABLE `%s`", tableName)); err != nil {
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log.Error("Unable to drop old table %s. Error: %v", tableName, err)
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return err
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}
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if err := sess.Table(tempTableName).DropIndexes(bean); err != nil {
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log.Error("Unable to drop indexes on temporary table %s. Error: %v", tempTableName, err)
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return err
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}
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if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE `%s` RENAME TO `%s`", tempTableName, tableName)); err != nil {
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log.Error("Unable to rename %s to %s. Error: %v", tempTableName, tableName, err)
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return err
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}
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if err := sess.Table(tableName).CreateIndexes(bean); err != nil {
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log.Error("Unable to recreate indexes on table %s. Error: %v", tableName, err)
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return err
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}
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if err := sess.Table(tableName).CreateUniques(bean); err != nil {
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log.Error("Unable to recreate uniques on table %s. Error: %v", tableName, err)
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return err
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}
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case setting.Database.Type.IsMySQL():
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// MySQL will drop all the constraints on the old table
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if _, err := sess.Exec(fmt.Sprintf("DROP TABLE `%s`", tableName)); err != nil {
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log.Error("Unable to drop old table %s. Error: %v", tableName, err)
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return err
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}
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if err := sess.Table(tempTableName).DropIndexes(bean); err != nil {
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log.Error("Unable to drop indexes on temporary table %s. Error: %v", tempTableName, err)
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return err
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}
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// SQLite and MySQL will move all the constraints from the temporary table to the new table
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if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE `%s` RENAME TO `%s`", tempTableName, tableName)); err != nil {
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log.Error("Unable to rename %s to %s. Error: %v", tempTableName, tableName, err)
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return err
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}
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if err := sess.Table(tableName).CreateIndexes(bean); err != nil {
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log.Error("Unable to recreate indexes on table %s. Error: %v", tableName, err)
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return err
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}
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if err := sess.Table(tableName).CreateUniques(bean); err != nil {
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log.Error("Unable to recreate uniques on table %s. Error: %v", tableName, err)
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return err
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}
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case setting.Database.Type.IsPostgreSQL():
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var originalSequences []string
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type sequenceData struct {
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LastValue int `xorm:"'last_value'"`
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IsCalled bool `xorm:"'is_called'"`
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}
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sequenceMap := map[string]sequenceData{}
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schema := sess.Engine().Dialect().URI().Schema
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sess.Engine().SetSchema("")
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if err := sess.Table("information_schema.sequences").Cols("sequence_name").Where("sequence_name LIKE ? || '_%' AND sequence_catalog = ?", tableName, setting.Database.Name).Find(&originalSequences); err != nil {
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log.Error("Unable to rename %s to %s. Error: %v", tempTableName, tableName, err)
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return err
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}
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sess.Engine().SetSchema(schema)
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for _, sequence := range originalSequences {
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sequenceData := sequenceData{}
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if _, err := sess.Table(sequence).Cols("last_value", "is_called").Get(&sequenceData); err != nil {
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log.Error("Unable to get last_value and is_called from %s. Error: %v", sequence, err)
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return err
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}
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sequenceMap[sequence] = sequenceData
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}
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// CASCADE causes postgres to drop all the constraints on the old table
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if _, err := sess.Exec(fmt.Sprintf("DROP TABLE `%s` CASCADE", tableName)); err != nil {
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log.Error("Unable to drop old table %s. Error: %v", tableName, err)
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return err
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}
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// CASCADE causes postgres to move all the constraints from the temporary table to the new table
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if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE `%s` RENAME TO `%s`", tempTableName, tableName)); err != nil {
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log.Error("Unable to rename %s to %s. Error: %v", tempTableName, tableName, err)
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return err
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}
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var indices []string
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sess.Engine().SetSchema("")
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if err := sess.Table("pg_indexes").Cols("indexname").Where("tablename = ? ", tableName).Find(&indices); err != nil {
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log.Error("Unable to rename %s to %s. Error: %v", tempTableName, tableName, err)
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return err
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}
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sess.Engine().SetSchema(schema)
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for _, index := range indices {
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newIndexName := strings.Replace(index, "tmp_recreate__", "", 1)
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if _, err := sess.Exec(fmt.Sprintf("ALTER INDEX `%s` RENAME TO `%s`", index, newIndexName)); err != nil {
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log.Error("Unable to rename %s to %s. Error: %v", index, newIndexName, err)
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return err
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}
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}
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var sequences []string
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sess.Engine().SetSchema("")
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if err := sess.Table("information_schema.sequences").Cols("sequence_name").Where("sequence_name LIKE 'tmp_recreate__' || ? || '_%' AND sequence_catalog = ?", tableName, setting.Database.Name).Find(&sequences); err != nil {
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log.Error("Unable to rename %s to %s. Error: %v", tempTableName, tableName, err)
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return err
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}
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sess.Engine().SetSchema(schema)
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for _, sequence := range sequences {
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newSequenceName := strings.Replace(sequence, "tmp_recreate__", "", 1)
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if _, err := sess.Exec(fmt.Sprintf("ALTER SEQUENCE `%s` RENAME TO `%s`", sequence, newSequenceName)); err != nil {
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log.Error("Unable to rename %s sequence to %s. Error: %v", sequence, newSequenceName, err)
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return err
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}
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val, ok := sequenceMap[newSequenceName]
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if newSequenceName == tableName+"_id_seq" {
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if ok && val.LastValue != 0 {
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if _, err := sess.Exec(fmt.Sprintf("SELECT setval('%s', %d, %t)", newSequenceName, val.LastValue, val.IsCalled)); err != nil {
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log.Error("Unable to reset %s to %d. Error: %v", newSequenceName, val, err)
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return err
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}
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} else {
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// We're going to try to guess this
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if _, err := sess.Exec(fmt.Sprintf("SELECT setval('%s', COALESCE((SELECT MAX(id)+1 FROM `%s`), 1), false)", newSequenceName, tableName)); err != nil {
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log.Error("Unable to reset %s. Error: %v", newSequenceName, err)
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return err
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}
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}
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} else if ok {
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if _, err := sess.Exec(fmt.Sprintf("SELECT setval('%s', %d, %t)", newSequenceName, val.LastValue, val.IsCalled)); err != nil {
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log.Error("Unable to reset %s to %d. Error: %v", newSequenceName, val, err)
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return err
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}
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}
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}
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default:
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log.Fatal("Unrecognized DB")
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}
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return nil
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}
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// WARNING: YOU MUST COMMIT THE SESSION AT THE END
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func DropTableColumns(sess *xorm.Session, tableName string, columnNames ...string) (err error) {
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if tableName == "" || len(columnNames) == 0 {
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return nil
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}
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// TODO: This will not work if there are foreign keys
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switch {
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case setting.Database.Type.IsSQLite3():
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// First drop the indexes on the columns
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res, errIndex := sess.Query(fmt.Sprintf("PRAGMA index_list(`%s`)", tableName))
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if errIndex != nil {
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return errIndex
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}
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for _, row := range res {
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indexName := row["name"]
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indexRes, err := sess.Query(fmt.Sprintf("PRAGMA index_info(`%s`)", indexName))
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if err != nil {
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return err
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}
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if len(indexRes) != 1 {
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continue
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}
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indexColumn := string(indexRes[0]["name"])
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for _, name := range columnNames {
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if name == indexColumn {
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_, err := sess.Exec(fmt.Sprintf("DROP INDEX `%s`", indexName))
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if err != nil {
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return err
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}
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}
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}
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}
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// Here we need to get the columns from the original table
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sql := fmt.Sprintf("SELECT sql FROM sqlite_master WHERE tbl_name='%s' and type='table'", tableName)
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res, err := sess.Query(sql)
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if err != nil {
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return err
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}
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tableSQL := string(res[0]["sql"])
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// Get the string offset for column definitions: `CREATE TABLE ( column-definitions... )`
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columnDefinitionsIndex := strings.Index(tableSQL, "(")
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if columnDefinitionsIndex < 0 {
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return errors.New("couldn't find column definitions")
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}
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// Separate out the column definitions
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tableSQL = tableSQL[columnDefinitionsIndex:]
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// Remove the required columnNames
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for _, name := range columnNames {
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tableSQL = regexp.MustCompile(regexp.QuoteMeta("`"+name+"`")+"[^`,)]*?[,)]").ReplaceAllString(tableSQL, "")
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}
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// Ensure the query is ended properly
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tableSQL = strings.TrimSpace(tableSQL)
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if tableSQL[len(tableSQL)-1] != ')' {
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if tableSQL[len(tableSQL)-1] == ',' {
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tableSQL = tableSQL[:len(tableSQL)-1]
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}
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tableSQL += ")"
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}
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// Find all the columns in the table
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columns := regexp.MustCompile("`([^`]*)`").FindAllString(tableSQL, -1)
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tableSQL = fmt.Sprintf("CREATE TABLE `new_%s_new` ", tableName) + tableSQL
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if _, err := sess.Exec(tableSQL); err != nil {
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return err
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}
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// Now restore the data
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columnsSeparated := strings.Join(columns, ",")
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insertSQL := fmt.Sprintf("INSERT INTO `new_%s_new` (%s) SELECT %s FROM %s", tableName, columnsSeparated, columnsSeparated, tableName)
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if _, err := sess.Exec(insertSQL); err != nil {
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return err
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}
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// Now drop the old table
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if _, err := sess.Exec(fmt.Sprintf("DROP TABLE `%s`", tableName)); err != nil {
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return err
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}
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// Rename the table
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if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE `new_%s_new` RENAME TO `%s`", tableName, tableName)); err != nil {
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return err
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}
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case setting.Database.Type.IsPostgreSQL():
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cols := ""
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for _, col := range columnNames {
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if cols != "" {
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cols += ", "
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}
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cols += "DROP COLUMN `" + col + "` CASCADE"
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}
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if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE `%s` %s", tableName, cols)); err != nil {
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return fmt.Errorf("Drop table `%s` columns %v: %v", tableName, columnNames, err)
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}
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case setting.Database.Type.IsMySQL():
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// Drop indexes on columns first
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sql := fmt.Sprintf("SHOW INDEX FROM %s WHERE column_name IN ('%s')", tableName, strings.Join(columnNames, "','"))
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res, err := sess.Query(sql)
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if err != nil {
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return err
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}
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for _, index := range res {
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indexName := index["column_name"]
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if len(indexName) > 0 {
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_, err := sess.Exec(fmt.Sprintf("DROP INDEX `%s` ON `%s`", indexName, tableName))
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if err != nil {
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return err
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}
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}
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}
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// Now drop the columns
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cols := ""
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for _, col := range columnNames {
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if cols != "" {
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cols += ", "
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}
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cols += "DROP COLUMN `" + col + "`"
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}
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if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE `%s` %s", tableName, cols)); err != nil {
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return fmt.Errorf("Drop table `%s` columns %v: %v", tableName, columnNames, err)
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}
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default:
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log.Fatal("Unrecognized DB")
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}
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return nil
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}
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// ModifyColumn will modify column's type or other property. SQLITE is not supported
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func ModifyColumn(x *xorm.Engine, tableName string, col *schemas.Column) error {
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var indexes map[string]*schemas.Index
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var err error
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defer func() {
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for _, index := range indexes {
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_, err = x.Exec(x.Dialect().CreateIndexSQL(tableName, index))
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if err != nil {
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log.Error("Create index %s on table %s failed: %v", index.Name, tableName, err)
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}
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}
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}()
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alterSQL := x.Dialect().ModifyColumnSQL(tableName, col)
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if _, err := x.Exec(alterSQL); err != nil {
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return err
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}
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return nil
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}
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func removeAllWithRetry(dir string) error {
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var err error
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for i := 0; i < 20; i++ {
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err = os.RemoveAll(dir)
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if err == nil {
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break
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}
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time.Sleep(100 * time.Millisecond)
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}
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return err
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}
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func newXORMEngine() (*xorm.Engine, error) {
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if err := db.InitEngine(context.Background()); err != nil {
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return nil, err
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}
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x := unittest.GetXORMEngine()
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return x, nil
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}
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func deleteDB() error {
|
|
switch {
|
|
case setting.Database.Type.IsSQLite3():
|
|
if err := util.Remove(setting.Database.Path); err != nil {
|
|
return err
|
|
}
|
|
return os.MkdirAll(path.Dir(setting.Database.Path), os.ModePerm)
|
|
|
|
case setting.Database.Type.IsMySQL():
|
|
db, err := sql.Open("mysql", fmt.Sprintf("%s:%s@tcp(%s)/",
|
|
setting.Database.User, setting.Database.Passwd, setting.Database.Host))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer db.Close()
|
|
|
|
if _, err = db.Exec(fmt.Sprintf("DROP DATABASE IF EXISTS %s", setting.Database.Name)); err != nil {
|
|
return err
|
|
}
|
|
|
|
if _, err = db.Exec(fmt.Sprintf("CREATE DATABASE IF NOT EXISTS %s", setting.Database.Name)); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
case setting.Database.Type.IsPostgreSQL():
|
|
db, err := sql.Open("postgres", fmt.Sprintf("postgres://%s:%s@%s/?sslmode=%s",
|
|
setting.Database.User, setting.Database.Passwd, setting.Database.Host, setting.Database.SSLMode))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer db.Close()
|
|
|
|
if _, err = db.Exec(fmt.Sprintf("DROP DATABASE IF EXISTS %s", setting.Database.Name)); err != nil {
|
|
return err
|
|
}
|
|
|
|
if _, err = db.Exec(fmt.Sprintf("CREATE DATABASE %s", setting.Database.Name)); err != nil {
|
|
return err
|
|
}
|
|
db.Close()
|
|
|
|
// Check if we need to setup a specific schema
|
|
if len(setting.Database.Schema) != 0 {
|
|
db, err = sql.Open("postgres", fmt.Sprintf("postgres://%s:%s@%s/%s?sslmode=%s",
|
|
setting.Database.User, setting.Database.Passwd, setting.Database.Host, setting.Database.Name, setting.Database.SSLMode))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer db.Close()
|
|
|
|
schrows, err := db.Query(fmt.Sprintf("SELECT 1 FROM information_schema.schemata WHERE schema_name = '%s'", setting.Database.Schema))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer schrows.Close()
|
|
|
|
if !schrows.Next() {
|
|
// Create and setup a DB schema
|
|
_, err = db.Exec(fmt.Sprintf("CREATE SCHEMA %s", setting.Database.Schema))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
// Make the user's default search path the created schema; this will affect new connections
|
|
_, err = db.Exec(fmt.Sprintf(`ALTER USER "%s" SET search_path = %s`, setting.Database.User, setting.Database.Schema))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|