mirror of
https://github.com/go-vikunja/vikunja.git
synced 2026-07-17 07:12:34 -05:00
91 lines
3.7 KiB
Go
91 lines
3.7 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 License 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 License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package migration
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import (
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"fmt"
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"strings"
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"code.vikunja.io/api/pkg/config"
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"code.vikunja.io/api/pkg/log"
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"xorm.io/xorm"
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)
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// checkPostgresSchemaMismatch refuses to run migrations when an existing install's tables
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// live only in a schema other than the active one, instead of creating a second empty set (#3118).
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func checkPostgresSchemaMismatch(x *xorm.Engine) error {
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if config.DatabaseType.GetString() != "postgres" {
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return nil
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}
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results, err := x.Query("SELECT COALESCE(current_schema(), '') AS current_schema")
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if err != nil {
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return fmt.Errorf("could not determine the current schema: %w", err)
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}
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currentSchema := ""
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if len(results) > 0 {
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currentSchema = string(results[0]["current_schema"])
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}
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// users + migration together identify a schema holding an existing Vikunja install.
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results, err = x.Query(`SELECT u.schemaname
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FROM pg_tables u
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JOIN pg_tables m ON m.schemaname = u.schemaname AND m.tablename = 'migration'
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WHERE u.tablename = 'users'`)
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if err != nil {
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return fmt.Errorf("could not check for existing Vikunja tables: %w", err)
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}
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dataSchemas := make([]string, 0, len(results))
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for _, row := range results {
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dataSchemas = append(dataSchemas, string(row["schemaname"]))
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}
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return validateSchemaPlacement(config.DatabaseSchema.GetString(), currentSchema, dataSchemas)
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}
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func validateSchemaPlacement(configuredSchema, currentSchema string, dataSchemas []string) error {
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// current_schema() falls back to the next valid search_path entry (e.g. public) when the
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// configured schema does not exist, so compare against the configured value explicitly.
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if configuredSchema != "" && currentSchema != configuredSchema {
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return fmt.Errorf("the configured schema %q does not exist or is not accessible to the database user (active schema: %q). Create it or set database.schema (VIKUNJA_DATABASE_SCHEMA) to an existing schema", configuredSchema, currentSchema)
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}
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others := make([]string, 0, len(dataSchemas))
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found := false
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for _, s := range dataSchemas {
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if s == currentSchema {
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found = true
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continue
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}
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others = append(others, s)
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}
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if len(dataSchemas) == 0 || found {
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if found && len(others) > 0 {
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log.Warningf("Found Vikunja tables in schema(s) %s in addition to the active schema %q. Vikunja will ignore them, but you may want to clean them up.", strings.Join(others, ", "), currentSchema)
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}
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return nil
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}
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if currentSchema == "" {
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return fmt.Errorf("the configured database schema does not exist, but existing Vikunja tables were found in schema(s) %s. Set database.schema (VIKUNJA_DATABASE_SCHEMA) to the schema containing your data", strings.Join(others, ", "))
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}
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return fmt.Errorf("existing Vikunja tables were found in schema(s) %s, but Vikunja is configured to use schema %q. Running migrations now would create a second, empty set of tables. Set database.schema (VIKUNJA_DATABASE_SCHEMA) to the schema containing your data", strings.Join(others, ", "), currentSchema)
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}
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