Documentation
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Overview ¶
Package errors maps a store's database errors to domain errors: each mapper translates driver-specific errors (constraint violations, not-found, schema errors) into a coded core/errors.AppError. The mapper is chosen by the store's database Kind, one subpackage per kind (postgres/: pgx and pgconn).
Only the generic, dependency-light mappers live here. An Ent-ORM mapper belongs with the consumer that owns the Ent schema, because it imports the schema-generated ent error predicates; that consumer's Ent store injects it as a DBMapperFunc — the seam type below — at its composition point.
Index ¶
Constants ¶
const KindPostgres = "postgres"
KindPostgres maps PostgreSQL errors (pgx, pgconn) to domain errors (the default).
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type DBMapperFunc ¶
DBMapperFunc maps a database error to an *AppError. Implementations must return nil when the input error is nil. A concrete ORM mapper (e.g. a consumer's Ent mapper) is a DBMapperFunc value injected by the store that owns that ORM.
func NewDBMapper ¶
func NewDBMapper(kind string) (DBMapperFunc, error)
NewDBMapper returns the DBMapperFunc for the database kind; empty means KindPostgres. An unknown kind is CodeInvalidInput.
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