* cmd, core, ethdb, node: create chain freezer in a sub folder * core/rawdb: remove unused code * core, ethdb, node: add AncientDatadir API back * cmd, core: extend freezer info dump for sub-ancient-store * core/rawdb: rework freezer inspector * core/rawdb: address comments from Peter * core/rawdb: fix build issue
		
			
				
	
	
		
			87 lines
		
	
	
		
			3.0 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			87 lines
		
	
	
		
			3.0 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
// 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 "fmt"
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// The list of table names of chain freezer.
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const (
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	// chainFreezerHeaderTable indicates the name of the freezer header table.
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	chainFreezerHeaderTable = "headers"
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	// chainFreezerHashTable indicates the name of the freezer canonical hash table.
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	chainFreezerHashTable = "hashes"
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	// chainFreezerBodiesTable indicates the name of the freezer block body table.
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	chainFreezerBodiesTable = "bodies"
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	// chainFreezerReceiptTable indicates the name of the freezer receipts table.
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	chainFreezerReceiptTable = "receipts"
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	// chainFreezerDifficultyTable indicates the name of the freezer total difficulty table.
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	chainFreezerDifficultyTable = "diffs"
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)
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// chainFreezerNoSnappy configures whether compression is disabled for the ancient-tables.
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// Hashes and difficulties don't compress well.
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var chainFreezerNoSnappy = map[string]bool{
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	chainFreezerHeaderTable:     false,
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	chainFreezerHashTable:       true,
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	chainFreezerBodiesTable:     false,
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	chainFreezerReceiptTable:    false,
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	chainFreezerDifficultyTable: true,
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}
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// The list of identifiers of ancient stores.
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var (
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	chainFreezerName = "chain" // the folder name of chain segment ancient store.
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)
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// freezers the collections of all builtin freezers.
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var freezers = []string{chainFreezerName}
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// InspectFreezerTable dumps out the index of a specific freezer table. The passed
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// ancient indicates the path of root ancient directory where the chain freezer can
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// be opened. Start and end specify the range for dumping out indexes.
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// Note this function can only be used for debugging purposes.
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func InspectFreezerTable(ancient string, freezerName string, tableName string, start, end int64) error {
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	var (
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		path   string
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		tables map[string]bool
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	)
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	switch freezerName {
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	case chainFreezerName:
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		path, tables = resolveChainFreezerDir(ancient), chainFreezerNoSnappy
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	default:
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		return fmt.Errorf("unknown freezer, supported ones: %v", freezers)
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	}
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	noSnappy, exist := tables[tableName]
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	if !exist {
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		var names []string
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		for name := range tables {
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			names = append(names, name)
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		}
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		return fmt.Errorf("unknown table, supported ones: %v", names)
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	}
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	table, err := newFreezerTable(path, tableName, noSnappy, true)
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	if err != nil {
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		return err
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	}
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	table.dumpIndexStdout(start, end)
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	return nil
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}
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