gotosocial/internal/db/basic.go
tobi 4920229a3b
Database updates (#144)
* start moving some database stuff around

* continue moving db stuff around

* more fiddling

* more updates

* and some more

* and yet more

* i broke SOMETHING but what, it's a mystery

* tidy up

* vendor ttlcache

* use ttlcache

* fix up some tests

* rename some stuff

* little reminder

* some more updates
2021-08-20 12:26:56 +02:00

87 lines
4.2 KiB
Go

/*
GoToSocial
Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package db
import "context"
// Basic wraps basic database functionality.
type Basic interface {
// CreateTable creates a table for the given interface.
// For implementations that don't use tables, this can just return nil.
CreateTable(i interface{}) Error
// DropTable drops the table for the given interface.
// For implementations that don't use tables, this can just return nil.
DropTable(i interface{}) Error
// RegisterTable registers a table for use in many2many relations.
// For implementations that don't use tables, or many2many relations, this can just return nil.
RegisterTable(i interface{}) Error
// Stop should stop and close the database connection cleanly, returning an error if this is not possible.
// If the database implementation doesn't need to be stopped, this can just return nil.
Stop(ctx context.Context) Error
// IsHealthy should return nil if the database connection is healthy, or an error if not.
IsHealthy(ctx context.Context) Error
// GetByID gets one entry by its id. In a database like postgres, this might be the 'id' field of the entry,
// for other implementations (for example, in-memory) it might just be the key of a map.
// The given interface i will be set to the result of the query, whatever it is. Use a pointer or a slice.
// In case of no entries, a 'no entries' error will be returned
GetByID(id string, i interface{}) Error
// GetWhere gets one entry where key = value. This is similar to GetByID but allows the caller to specify the
// name of the key to select from.
// The given interface i will be set to the result of the query, whatever it is. Use a pointer or a slice.
// In case of no entries, a 'no entries' error will be returned
GetWhere(where []Where, i interface{}) Error
// GetAll will try to get all entries of type i.
// The given interface i will be set to the result of the query, whatever it is. Use a pointer or a slice.
// In case of no entries, a 'no entries' error will be returned
GetAll(i interface{}) Error
// Put simply stores i. It is up to the implementation to figure out how to store it, and using what key.
// The given interface i will be set to the result of the query, whatever it is. Use a pointer or a slice.
Put(i interface{}) Error
// Upsert stores or updates i based on the given conflict column, as in https://www.postgresqltutorial.com/postgresql-upsert/
// It is up to the implementation to figure out how to store it, and using what key.
// The given interface i will be set to the result of the query, whatever it is. Use a pointer or a slice.
Upsert(i interface{}, conflictColumn string) Error
// UpdateByID updates i with id id.
// The given interface i will be set to the result of the query, whatever it is. Use a pointer or a slice.
UpdateByID(id string, i interface{}) Error
// UpdateOneByID updates interface i with database the given database id. It will update one field of key key and value value.
UpdateOneByID(id string, key string, value interface{}, i interface{}) Error
// UpdateWhere updates column key of interface i with the given value, where the given parameters apply.
UpdateWhere(where []Where, key string, value interface{}, i interface{}) Error
// DeleteByID removes i with id id.
// If i didn't exist anyway, then no error should be returned.
DeleteByID(id string, i interface{}) Error
// DeleteWhere deletes i where key = value
// If i didn't exist anyway, then no error should be returned.
DeleteWhere(where []Where, i interface{}) Error
}