mirror of
https://github.com/btcsuite/btcd.git
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16cd44f0e6
This change is part of the effort to add utxocache support to btcd. utxo cache is now used by the BlockChain struct. By default it's used and the minimum cache is set to 250MiB. The change made helps speed up block/tx validation as the cache allows for much faster lookup of utxos. The initial block download in particular is improved as the db i/o bottleneck is remedied by the cache.
85 lines
2.5 KiB
Go
85 lines
2.5 KiB
Go
// Copyright (c) 2015-2017 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 netsync
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import (
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"fmt"
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"sync"
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"time"
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"github.com/btcsuite/btcd/blockchain"
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"github.com/btcsuite/btcd/btcutil"
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"github.com/btcsuite/btclog"
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)
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// blockProgressLogger provides periodic logging for other services in order
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// to show users progress of certain "actions" involving some or all current
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// blocks. Ex: syncing to best chain, indexing all blocks, etc.
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type blockProgressLogger struct {
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receivedLogBlocks int64
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receivedLogTx int64
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lastBlockLogTime time.Time
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subsystemLogger btclog.Logger
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progressAction string
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sync.Mutex
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}
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// newBlockProgressLogger returns a new block progress logger.
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// The progress message is templated as follows:
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//
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// {progressAction} {numProcessed} {blocks|block} in the last {timePeriod}
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// ({numTxs}, height {lastBlockHeight}, {lastBlockTimeStamp})
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func newBlockProgressLogger(progressMessage string, logger btclog.Logger) *blockProgressLogger {
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return &blockProgressLogger{
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lastBlockLogTime: time.Now(),
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progressAction: progressMessage,
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subsystemLogger: logger,
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}
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}
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// LogBlockHeight logs a new block height as an information message to show
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// progress to the user. In order to prevent spam, it limits logging to one
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// message every 10 seconds with duration and totals included.
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func (b *blockProgressLogger) LogBlockHeight(block *btcutil.Block, chain *blockchain.BlockChain) {
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b.Lock()
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defer b.Unlock()
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b.receivedLogBlocks++
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b.receivedLogTx += int64(len(block.MsgBlock().Transactions))
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now := time.Now()
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duration := now.Sub(b.lastBlockLogTime)
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if duration < time.Second*10 {
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return
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}
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// Truncate the duration to 10s of milliseconds.
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durationMillis := int64(duration / time.Millisecond)
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tDuration := 10 * time.Millisecond * time.Duration(durationMillis/10)
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// Log information about new block height.
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blockStr := "blocks"
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if b.receivedLogBlocks == 1 {
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blockStr = "block"
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}
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txStr := "transactions"
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if b.receivedLogTx == 1 {
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txStr = "transaction"
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}
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cacheSizeStr := fmt.Sprintf("~%d MiB", chain.CachedStateSize()/1024/1024)
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b.subsystemLogger.Infof("%s %d %s in the last %s (%d %s, height %d, %s, %s cache)",
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b.progressAction, b.receivedLogBlocks, blockStr, tDuration, b.receivedLogTx,
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txStr, block.Height(), block.MsgBlock().Header.Timestamp, cacheSizeStr)
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b.receivedLogBlocks = 0
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b.receivedLogTx = 0
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b.lastBlockLogTime = now
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}
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func (b *blockProgressLogger) SetLastLogTime(time time.Time) {
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b.lastBlockLogTime = time
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}
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