mirror of
https://github.com/0glabs/0g-chain.git
synced 2024-12-27 00:35:18 +00:00
84 lines
2.2 KiB
Go
84 lines
2.2 KiB
Go
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package iavlviewer
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import (
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"fmt"
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"strconv"
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dbm "github.com/cometbft/cometbft-db"
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"github.com/cosmos/cosmos-sdk/client"
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"github.com/cosmos/cosmos-sdk/server"
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ethermintserver "github.com/evmos/ethermint/server"
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"github.com/spf13/cobra"
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"github.com/cosmos/iavl"
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)
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const (
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DefaultCacheSize int = 10000
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)
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func NewCmd(opts ethermintserver.StartOptions) *cobra.Command {
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cmd := &cobra.Command{
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Use: "iavlviewer <data|hash|shape|versions> <prefix> [version number]",
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Short: "Output various data, hashes, and calculations for an iavl tree",
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}
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cmd.AddCommand(newDataCmd(opts))
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cmd.AddCommand(newHashCmd(opts))
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cmd.AddCommand(newShapeCmd(opts))
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cmd.AddCommand(newVersionsCmd(opts))
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return cmd
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}
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func parseVersion(arg string) (int, error) {
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version, err := strconv.Atoi(arg)
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if err != nil {
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return 0, fmt.Errorf("invalid version number: '%s'", arg)
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}
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return version, nil
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}
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func openPrefixTree(opts ethermintserver.StartOptions, cmd *cobra.Command, prefix string, version int) (*iavl.MutableTree, error) {
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clientCtx := client.GetClientContextFromCmd(cmd)
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ctx := server.GetServerContextFromCmd(cmd)
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ctx.Config.SetRoot(clientCtx.HomeDir)
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db, err := opts.DBOpener(ctx.Viper, clientCtx.HomeDir, server.GetAppDBBackend(ctx.Viper))
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if err != nil {
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return nil, fmt.Errorf("failed to open database at %s: %s", clientCtx.HomeDir, err)
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}
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defer func() {
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if err := db.Close(); err != nil {
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ctx.Logger.Error("error closing db", "error", err.Error())
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}
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}()
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tree, err := readTree(db, version, []byte(prefix))
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if err != nil {
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return nil, fmt.Errorf("failed to read tree with prefix %s: %s", prefix, err)
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}
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return tree, nil
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}
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// ReadTree loads an iavl tree from the directory
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// If version is 0, load latest, otherwise, load named version
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// The prefix represents which iavl tree you want to read. The iaviwer will always set a prefix.
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func readTree(db dbm.DB, version int, prefix []byte) (*iavl.MutableTree, error) {
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if len(prefix) != 0 {
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db = dbm.NewPrefixDB(db, prefix)
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}
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tree, err := iavl.NewMutableTree(db, DefaultCacheSize, false)
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if err != nil {
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return nil, err
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}
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ver, err := tree.LoadVersion(int64(version))
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if err != nil {
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return nil, err
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}
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fmt.Printf("Latest version: %d\n", ver)
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fmt.Printf("Got version: %d\n", version)
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return tree, err
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}
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