121 lines
3.2 KiB
Go
121 lines
3.2 KiB
Go
// Vikunja is a to-do list application to facilitate your life.
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// Copyright 2018-present Vikunja and contributors. All rights reserved.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public Licensee as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public Licensee for more details.
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//
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// You should have received a copy of the GNU Affero General Public Licensee
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package db
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import (
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"encoding/json"
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"strings"
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"code.vikunja.io/api/pkg/log"
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"xorm.io/xorm/schemas"
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)
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// Dump dumps all database tables
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func Dump() (data map[string][]byte, err error) {
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tables, err := x.DBMetas()
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if err != nil {
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return
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}
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data = make(map[string][]byte, len(tables))
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for _, table := range tables {
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entries := []map[string]interface{}{}
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err := x.Table(table.Name).Find(&entries)
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if err != nil {
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return nil, err
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}
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data[table.Name], err = json.Marshal(entries)
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if err != nil {
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return nil, err
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}
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}
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return
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}
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// Restore restores a table with all its entries
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func Restore(table string, contents []map[string]interface{}) (err error) {
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if _, err := x.IsTableExist(table); err != nil {
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return err
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}
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meta, err := x.DBMetas()
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if err != nil {
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return err
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}
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var metaForCurrentTable *schemas.Table
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for _, m := range meta {
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if m.Name == table {
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metaForCurrentTable = m
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break
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}
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}
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if metaForCurrentTable == nil {
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log.Fatalf("Could not find table definition for table %s", table)
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}
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for _, content := range contents {
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for colName, value := range content {
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// Date fields might get restored as 0001-01-01 from null dates. This can have unintended side-effects like
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// users being scheduled for deletion after a restore.
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// To avoid this, we set these dates to nil so that they'll end up as null in the db.
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col := metaForCurrentTable.GetColumn(colName)
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strVal, is := value.(string)
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if is && col.SQLType.IsTime() && (strVal == "" || strings.HasPrefix(strVal, "0001-")) {
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content[colName] = nil
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}
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}
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if _, err := x.Table(table).Insert(content); err != nil {
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return err
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}
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}
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if Type() == schemas.POSTGRES {
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idSequence := table + "_id_seq"
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_, err = x.Query("SELECT setval('" + idSequence + "', COALESCE(MAX(id), 1) )")
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if err != nil {
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log.Warningf("Could not reset id sequence for %s: %s", idSequence, err)
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err = nil
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}
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}
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return
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}
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// RestoreAndTruncate removes all content from the table before restoring it from the contents map
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func RestoreAndTruncate(table string, contents []map[string]interface{}) (err error) {
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if _, err := x.IsTableExist(table); err != nil {
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return err
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}
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if x.Dialect().URI().DBType == schemas.SQLITE {
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if _, err := x.Query("DELETE FROM " + table); err != nil {
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return err
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}
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} else {
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if _, err := x.Query("TRUNCATE TABLE ?", table); err != nil {
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return err
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}
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}
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return Restore(table, contents)
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}
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