github.com/theQRL/go-zond@v0.1.1/trie/triedb/pathdb/errors.go (about)

     1  // Copyright 2023 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>
    16  
    17  package pathdb
    18  
    19  import (
    20  	"errors"
    21  	"fmt"
    22  
    23  	"github.com/theQRL/go-zond/common"
    24  )
    25  
    26  var (
    27  	// errSnapshotReadOnly is returned if the database is opened in read only mode
    28  	// and mutation is requested.
    29  	errSnapshotReadOnly = errors.New("read only")
    30  
    31  	// errSnapshotStale is returned from data accessors if the underlying layer
    32  	// layer had been invalidated due to the chain progressing forward far enough
    33  	// to not maintain the layer's original state.
    34  	errSnapshotStale = errors.New("layer stale")
    35  
    36  	// errUnexpectedHistory is returned if an unmatched state history is applied
    37  	// to the database for state rollback.
    38  	errUnexpectedHistory = errors.New("unexpected state history")
    39  
    40  	// errStateUnrecoverable is returned if state is required to be reverted to
    41  	// a destination without associated state history available.
    42  	errStateUnrecoverable = errors.New("state is unrecoverable")
    43  
    44  	// errUnexpectedNode is returned if the requested node with specified path is
    45  	// not hash matched with expectation.
    46  	errUnexpectedNode = errors.New("unexpected node")
    47  )
    48  
    49  func newUnexpectedNodeError(loc string, expHash common.Hash, gotHash common.Hash, owner common.Hash, path []byte) error {
    50  	return fmt.Errorf("%w, loc: %s, node: (%x %v), %x!=%x", errUnexpectedNode, loc, owner, path, expHash, gotHash)
    51  }