723d86274b
- This updates the spend pruner to use a single notification channel to keep the order and processing of connectiong and disconnections deterministic. - The process lock is now held when spend journal entries being removed by the pruner to ensure. - The spend pruners lifecycle process uses an unbuffered channel to recieve and process notifications. Notifications are sent via goroutines to avoid blocking as a result. - Comment related wrapping issues have been resolved.
56 lines
1.7 KiB
Go
56 lines
1.7 KiB
Go
// Copyright (c) 2021 The Decred developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package spendpruner
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// ErrorKind identifies a kind of error. It has full support for errors.Is and
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// errors.As, so the caller can directly check against an error kind when
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// determining the reason for an error.
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type ErrorKind string
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// These constants are used to identify a specific PruneError.
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const (
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// ErrNoConsumer indicates a spend journal consumer hash does not exist.
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ErrNoConsumer = ErrorKind("ErrNoConsumer")
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// ErrLoadSpendDeps indicates an error loading consumer
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// spend dependencies.
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ErrLoadSpendDeps = ErrorKind("ErrLoadSpendDeps")
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// ErrNeedSpendData indicates an error asserting a spend data dependency.
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ErrNeedSpendData = ErrorKind("ErrNeedSpendData")
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// ErrUpdateConsumerDeps indicates an error updating consumer spend
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// dependencies.
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ErrUpdateConsumerDeps = ErrorKind("ErrUpdateConsumerDeps")
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)
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// Error satisfies the error interface and prints human-readable errors.
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func (e ErrorKind) Error() string {
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return string(e)
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}
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// PruneError identifies a spend journal pruner error. It has full support for
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// errors.Is and errors.As, so the caller can ascertain the specific reason
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// for the error by checking the underlying error.
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type PruneError struct {
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Description string
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Err error
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}
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// Error satisfies the error interface and prints human-readable errors.
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func (e PruneError) Error() string {
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return e.Description
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}
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// Unwrap returns the underlying wrapped error.
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func (e PruneError) Unwrap() error {
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return e.Err
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}
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// pruneError creates a PruneError given a set of arguments.
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func pruneError(kind ErrorKind, desc string) PruneError {
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return PruneError{Err: kind, Description: desc}
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}
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