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91 lines
2.8 KiB
91 lines
2.8 KiB
// Copyright 2022 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package rawdb
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import (
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"fmt"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/ethdb"
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)
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type tableSize struct {
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name string
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size common.StorageSize
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}
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// freezerInfo contains the basic information of the freezer.
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type freezerInfo struct {
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name string // The identifier of freezer
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head uint64 // The number of last stored item in the freezer
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tail uint64 // The number of first stored item in the freezer
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sizes []tableSize // The storage size per table
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}
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// count returns the number of stored items in the freezer.
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func (info *freezerInfo) count() uint64 {
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return info.head - info.tail + 1
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}
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// size returns the storage size of the entire freezer.
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func (info *freezerInfo) size() common.StorageSize {
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var total common.StorageSize
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for _, table := range info.sizes {
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total += table.size
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}
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return total
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}
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// inspectFreezers inspects all freezers registered in the system.
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// This function is NOT used, just ported over from the Ethereum
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func inspectFreezers(db ethdb.Database) ([]freezerInfo, error) {
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var infos []freezerInfo
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for _, freezer := range freezers {
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switch freezer {
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case chainFreezerName:
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// Chain ancient store is a bit special. It's always opened along
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// with the key-value store, inspect the chain store directly.
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info := freezerInfo{name: freezer}
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// Retrieve storage size of every contained table.
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for table := range chainFreezerNoSnappy {
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size, err := db.AncientSize(table)
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if err != nil {
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return nil, err
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}
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info.sizes = append(info.sizes, tableSize{name: table, size: common.StorageSize(size)})
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}
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// Retrieve the number of last stored item
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ancients, err := db.Ancients()
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if err != nil {
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return nil, err
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}
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info.head = ancients - 1
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// Retrieve the number of first stored item
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tail, err := db.Tail()
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if err != nil {
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return nil, err
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}
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info.tail = tail
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infos = append(infos, info)
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default:
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return nil, fmt.Errorf("unknown freezer, supported ones: %v", freezers)
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}
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}
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return infos, nil
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}
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