bd4e64d1d4
This is mostly a backport of some of the same modifications made in Decred along with a few additional things cleaned up. In particular, this updates the code to make use of the new chainhash package. Also, since this required API changes anyways and the hash algorithm is no longer tied specifically to SHA, all other functions throughout the code base which had "Sha" in their name have been changed to Hash so they are not incorrectly implying the hash algorithm. The following is an overview of the changes: - Remove the wire.ShaHash type - Update all references to wire.ShaHash to the new chainhash.Hash type - Rename the following functions and update all references: - wire.BlockHeader.BlockSha -> BlockHash - wire.MsgBlock.BlockSha -> BlockHash - wire.MsgBlock.TxShas -> TxHashes - wire.MsgTx.TxSha -> TxHash - blockchain.ShaHashToBig -> HashToBig - peer.ShaFunc -> peer.HashFunc - Rename all variables that included sha in their name to include hash instead - Update for function name changes in other dependent packages such as btcutil - Update copyright dates on all modified files - Update glide.lock file to use the required version of btcutil
101 lines
2.4 KiB
Go
101 lines
2.4 KiB
Go
// Copyright (c) 2015-2016 The btcsuite 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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"time"
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"github.com/btcsuite/btcd/chaincfg/chainhash"
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"github.com/btcsuite/btcd/database"
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)
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// headersCmd defines the configuration options for the loadheaders command.
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type headersCmd struct {
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Bulk bool `long:"bulk" description:"Use bulk loading of headers instead of one at a time"`
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}
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var (
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// headersCfg defines the configuration options for the command.
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headersCfg = headersCmd{
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Bulk: false,
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}
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)
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// Execute is the main entry point for the command. It's invoked by the parser.
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func (cmd *headersCmd) Execute(args []string) error {
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// Setup the global config options and ensure they are valid.
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if err := setupGlobalConfig(); err != nil {
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return err
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}
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// Load the block database.
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db, err := loadBlockDB()
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if err != nil {
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return err
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}
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defer db.Close()
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// NOTE: This code will only work for ffldb. Ideally the package using
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// the database would keep a metadata index of its own.
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blockIdxName := []byte("ffldb-blockidx")
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if !headersCfg.Bulk {
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err = db.View(func(tx database.Tx) error {
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totalHdrs := 0
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blockIdxBucket := tx.Metadata().Bucket(blockIdxName)
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blockIdxBucket.ForEach(func(k, v []byte) error {
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totalHdrs++
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return nil
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})
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log.Infof("Loading headers for %d blocks...", totalHdrs)
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numLoaded := 0
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startTime := time.Now()
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blockIdxBucket.ForEach(func(k, v []byte) error {
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var hash chainhash.Hash
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copy(hash[:], k)
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_, err := tx.FetchBlockHeader(&hash)
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if err != nil {
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return err
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}
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numLoaded++
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return nil
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})
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log.Infof("Loaded %d headers in %v", numLoaded,
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time.Now().Sub(startTime))
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return nil
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})
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if err != nil {
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return err
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}
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return nil
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}
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// Bulk load headers.
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err = db.View(func(tx database.Tx) error {
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blockIdxBucket := tx.Metadata().Bucket(blockIdxName)
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hashes := make([]chainhash.Hash, 0, 500000)
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blockIdxBucket.ForEach(func(k, v []byte) error {
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var hash chainhash.Hash
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copy(hash[:], k)
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hashes = append(hashes, hash)
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return nil
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})
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log.Infof("Loading headers for %d blocks...", len(hashes))
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startTime := time.Now()
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hdrs, err := tx.FetchBlockHeaders(hashes)
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if err != nil {
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return err
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}
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log.Infof("Loaded %d headers in %v", len(hdrs),
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time.Now().Sub(startTime))
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return nil
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})
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if err != nil {
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return err
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}
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return nil
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}
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