mirror of
https://github.com/superseriousbusiness/gotosocial.git
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083099a957
* reference logrus' global logger instead of passing and storing a logger reference everywhere * always directly use global logrus logger instead of referencing an instance * test suites should also directly use the global logrus logger * rename gin logging function to clarify that it's middleware * correct comments which erroneously referenced removed logger parameter * setting log level for tests now uses logrus' exported type instead of the string value, to guarantee error isn't possible
91 lines
2.4 KiB
Go
91 lines
2.4 KiB
Go
package bundb
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import (
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"context"
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"database/sql"
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"github.com/superseriousbusiness/gotosocial/internal/db"
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"github.com/uptrace/bun"
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"github.com/uptrace/bun/dialect"
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)
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// DBConn wrapps a bun.DB conn to provide SQL-type specific additional functionality
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type DBConn struct {
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// TODO: move *Config here, no need to be in each struct type
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errProc func(error) db.Error // errProc is the SQL-type specific error processor
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*bun.DB // DB is the underlying bun.DB connection
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}
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// WrapDBConn @TODO
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func WrapDBConn(dbConn *bun.DB) *DBConn {
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var errProc func(error) db.Error
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switch dbConn.Dialect().Name() {
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case dialect.PG:
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errProc = processPostgresError
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case dialect.SQLite:
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errProc = processSQLiteError
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default:
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panic("unknown dialect name: " + dbConn.Dialect().Name().String())
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}
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return &DBConn{
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errProc: errProc,
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DB: dbConn,
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}
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}
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// RunInTx wraps execution of the supplied transaction function.
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func (conn *DBConn) RunInTx(ctx context.Context, fn func(bun.Tx) error) db.Error {
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// Acquire a new transaction
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tx, err := conn.BeginTx(ctx, nil)
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if err != nil {
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return conn.ProcessError(err)
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}
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// Perform supplied transaction
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if err = fn(tx); err != nil {
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tx.Rollback() //nolint
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return conn.ProcessError(err)
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}
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// Finally, commit transaction
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err = tx.Commit()
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return conn.ProcessError(err)
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}
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// ProcessError processes an error to replace any known values with our own db.Error types,
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// making it easier to catch specific situations (e.g. no rows, already exists, etc)
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func (conn *DBConn) ProcessError(err error) db.Error {
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switch {
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case err == nil:
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return nil
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case err == sql.ErrNoRows:
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return db.ErrNoEntries
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default:
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return conn.errProc(err)
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}
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}
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// Exists checks the results of a SelectQuery for the existence of the data in question, masking ErrNoEntries errors
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func (conn *DBConn) Exists(ctx context.Context, query *bun.SelectQuery) (bool, db.Error) {
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// Get the select query result
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count, err := query.Count(ctx)
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// Process error as our own and check if it exists
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switch err := conn.ProcessError(err); err {
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case nil:
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return (count != 0), nil
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case db.ErrNoEntries:
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return false, nil
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default:
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return false, err
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}
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}
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// NotExists is the functional opposite of conn.Exists()
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func (conn *DBConn) NotExists(ctx context.Context, query *bun.SelectQuery) (bool, db.Error) {
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// Simply inverse of conn.exists()
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exists, err := conn.Exists(ctx, query)
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return !exists, err
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}
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