123 lines
2.9 KiB
Go
123 lines
2.9 KiB
Go
/*
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Copyright 2023 The Dapr Authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package state
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import (
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"errors"
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"fmt"
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)
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type ETagErrorKind string
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const (
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mismatchPrefix = "possible etag mismatch. error from state store"
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invalidPrefix = "invalid etag value"
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ETagInvalid ETagErrorKind = "invalid"
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ETagMismatch ETagErrorKind = "mismatch"
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)
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// ETagError is a custom error type for etag exceptions.
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type ETagError struct {
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err error
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kind ETagErrorKind
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}
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// NewETagError returns an ETagError wrapping an existing context error.
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func NewETagError(kind ETagErrorKind, err error) *ETagError {
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return &ETagError{
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err: err,
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kind: kind,
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}
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}
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func (e *ETagError) Kind() ETagErrorKind {
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return e.kind
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}
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func (e *ETagError) Error() string {
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var prefix string
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switch e.kind {
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case ETagInvalid:
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prefix = invalidPrefix
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case ETagMismatch:
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prefix = mismatchPrefix
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}
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if e.err != nil {
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return prefix + ": " + e.err.Error()
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}
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return prefix
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}
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func (e *ETagError) Unwrap() error {
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return e.err
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}
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// BulkDeleteRowMismatchError represents mismatch in rowcount while deleting rows.
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type BulkDeleteRowMismatchError struct {
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expected uint64
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affected uint64
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}
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// BulkDeleteRowMismatchError returns a BulkDeleteRowMismatchError.
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func NewBulkDeleteRowMismatchError(expected, affected uint64) *BulkDeleteRowMismatchError {
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return &BulkDeleteRowMismatchError{
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expected: expected,
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affected: affected,
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}
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}
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func (e *BulkDeleteRowMismatchError) Error() string {
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return fmt.Sprintf("delete affected only %d rows, expected %d", e.affected, e.expected)
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}
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// BulkStoreError is an error object that contains details on the operations that failed.
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type BulkStoreError struct {
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key string
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err error
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}
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func NewBulkStoreError(key string, err error) BulkStoreError {
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return BulkStoreError{
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key: key,
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err: err,
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}
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}
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// Key returns the key of the operation that failed.
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func (e BulkStoreError) Key() string {
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return e.key
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}
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// Error returns the error message. It implements the error interface.
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func (e BulkStoreError) Error() string {
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return e.err.Error()
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}
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// Unwrap returns the wrapped error. It implements the error wrapping interface.
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func (e BulkStoreError) Unwrap() error {
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return e.err
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}
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// ETagError returns an *ETagError if the wrapped error is of that kind; otherwise, returns nil
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func (e BulkStoreError) ETagError() *ETagError {
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var etagErr *ETagError
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if errors.As(e.err, &etagErr) {
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return etagErr
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}
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return nil
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}
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