1 files changed, 57 insertions, 0 deletions
diff --git a/pkg/database/error.go b/pkg/database/error.go
new file mode 100644
index 0000000..1681dd5
--- /dev/null
+++ b/pkg/database/error.go
@@ -0,0 +1,57 @@
+package database
+
+import "fmt"
+
+// database init error
+type InitError struct {
+	path string
+	err  error
+}
+
+func (e *InitError) Error() string {
+	return fmt.Sprintf("Failed to open database : %s", e.path)
+}
+func (e *InitError) Unwrap() error { return e.err }
+
+func newInitError(path string, err error) error {
+	return &InitError{
+		path: path,
+		err:  err,
+	}
+}
+
+// database migration error
+type MigrationError struct {
+	version int
+	err     error
+}
+
+func (e *MigrationError) Error() string {
+	return fmt.Sprintf("Failed to migrate database to version %d : %s", e.version, e.err)
+}
+func (e *MigrationError) Unwrap() error { return e.err }
+
+func newMigrationError(version int, err error) error {
+	return &MigrationError{
+		version: version,
+		err:     err,
+	}
+}
+
+// database transaction error
+type TransactionError struct {
+	msg string
+	err error
+}
+
+func (e *TransactionError) Error() string {
+	return fmt.Sprintf("Failed to perform transaction : %s", e.msg)
+}
+func (e *TransactionError) Unwrap() error { return e.err }
+
+func newTransactionError(msg string, err error) error {
+	return &TransactionError{
+		msg: msg,
+		err: err,
+	}
+}