77 lines
2.3 KiB
Go
77 lines
2.3 KiB
Go
// Copyright (c) 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 indexers
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import (
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"sync"
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"time"
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"github.com/btcsuite/btclog"
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btcutil "github.com/lbryio/lbcutil"
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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) {
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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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b.subsystemLogger.Infof("%s %d %s in the last %s (%d %s, height %d, %s)",
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b.progressAction, b.receivedLogBlocks, blockStr, tDuration, b.receivedLogTx,
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txStr, block.Height(), block.MsgBlock().Header.Timestamp)
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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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