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92 lines
3.0 KiB
Go
92 lines
3.0 KiB
Go
// Copyright (c) 2015-2016 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 main
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import (
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"fmt"
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)
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// MiningErrorCode identifies a kind of error.
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type MiningErrorCode int
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// These constants are used to identify a specific RuleError.
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const (
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// ErrNotEnoughVoters indicates that there were not enough voters to
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// build a block on top of HEAD.
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ErrNotEnoughVoters MiningErrorCode = iota
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// ErrFailedToGetGeneration specifies that the current generation for
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// a block could not be obtained from blockchain.
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ErrFailedToGetGeneration
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// ErrGetStakeDifficulty indicates that the current top block of the
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// blockchain could not be obtained.
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ErrGetTopBlock
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// ErrGettingDifficulty indicates that there was an error getting the
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// PoW difficulty.
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ErrGettingDifficulty
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// ErrTransactionAppend indicates there was a problem adding a msgtx
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// to a msgblock.
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ErrTransactionAppend
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// ErrCheckConnectBlock indicates that a newly created block template
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// failed blockchain.CheckConnectBlock.
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ErrCheckConnectBlock
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// ErrFraudProofIndex indicates that there was an error finding the index
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// for a fraud proof.
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ErrFraudProofIndex
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// ErrFetchTxStore indicates a transaction store failed to fetch.
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ErrFetchTxStore
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)
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// Map of MiningErrorCode values back to their constant names for pretty printing.
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var miningErrorCodeStrings = map[MiningErrorCode]string{
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ErrNotEnoughVoters: "ErrNotEnoughVoters",
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ErrFailedToGetGeneration: "ErrFailedToGetGeneration",
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ErrGetTopBlock: "ErrGetTopBlock",
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ErrGettingDifficulty: "ErrGettingDifficulty",
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ErrTransactionAppend: "ErrTransactionAppend",
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ErrCheckConnectBlock: "ErrCheckConnectBlock",
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ErrFraudProofIndex: "ErrFraudProofIndex",
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ErrFetchTxStore: "ErrFetchTxStore",
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}
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// String returns the MiningErrorCode as a human-readable name.
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func (e MiningErrorCode) String() string {
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if s := miningErrorCodeStrings[e]; s != "" {
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return s
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}
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return fmt.Sprintf("Unknown MiningErrorCode (%d)", int(e))
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}
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// MiningRuleError identifies a rule violation. It is used to indicate that
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// processing of a block or transaction failed due to one of the many validation
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// rules. The caller can use type assertions to determine if a failure was
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// specifically due to a rule violation and access the MiningErrorCode field to
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// ascertain the specific reason for the rule violation.
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type MiningRuleError struct {
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ErrorCode MiningErrorCode // Describes the kind of error
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Description string // Human readable description of the issue
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}
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// Error satisfies the error interface and prints human-readable errors.
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func (e MiningRuleError) Error() string {
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return e.Description
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}
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// GetCode satisfies the error interface and prints human-readable errors.
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func (e MiningRuleError) GetCode() MiningErrorCode {
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return e.ErrorCode
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}
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// miningRuleError creates an RuleError given a set of arguments.
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func miningRuleError(c MiningErrorCode, desc string) MiningRuleError {
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return MiningRuleError{ErrorCode: c, Description: desc}
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}
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