lbcd/cmd/addblock/addblock.go
Dave Collins dc83f4ee6a addblock: Add support for generating indexes.
This adds two new flags, --txindex and --addrindex, to the addblock
utility which mirror the flags on btcd.  They serve to to specify that
the transaction index and/or address index, respectively, should be
built while importing from the bootstrap file.

This is technically not 100% required since btcd will build the indexes
on the first load (when enabled) if they aren't already built, however
it is much faster to build the indexes as the blocks are being validated
(particularly for the address index), so this makes the capability
available.
2016-06-03 17:06:16 -05:00

132 lines
3.5 KiB
Go

// Copyright (c) 2013-2016 The btcsuite developers
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.
package main
import (
"os"
"path/filepath"
"runtime"
"github.com/btcsuite/btcd/blockchain"
"github.com/btcsuite/btcd/blockchain/indexers"
"github.com/btcsuite/btcd/database"
"github.com/btcsuite/btcd/limits"
"github.com/btcsuite/btclog"
)
const (
// blockDbNamePrefix is the prefix for the btcd block database.
blockDbNamePrefix = "blocks"
)
var (
cfg *config
log btclog.Logger
)
// loadBlockDB opens the block database and returns a handle to it.
func loadBlockDB() (database.DB, error) {
// The database name is based on the database type.
dbName := blockDbNamePrefix + "_" + cfg.DbType
dbPath := filepath.Join(cfg.DataDir, dbName)
log.Infof("Loading block database from '%s'", dbPath)
db, err := database.Open(cfg.DbType, dbPath, activeNetParams.Net)
if err != nil {
// Return the error if it's not because the database doesn't
// exist.
if dbErr, ok := err.(database.Error); !ok || dbErr.ErrorCode !=
database.ErrDbDoesNotExist {
return nil, err
}
// Create the db if it does not exist.
err = os.MkdirAll(cfg.DataDir, 0700)
if err != nil {
return nil, err
}
db, err = database.Create(cfg.DbType, dbPath, activeNetParams.Net)
if err != nil {
return nil, err
}
}
log.Info("Block database loaded")
return db, nil
}
// realMain is the real main function for the utility. It is necessary to work
// around the fact that deferred functions do not run when os.Exit() is called.
func realMain() error {
// Load configuration and parse command line.
tcfg, _, err := loadConfig()
if err != nil {
return err
}
cfg = tcfg
// Setup logging.
backendLogger := btclog.NewDefaultBackendLogger()
defer backendLogger.Flush()
log = btclog.NewSubsystemLogger(backendLogger, "")
database.UseLogger(btclog.NewSubsystemLogger(backendLogger, "BCDB: "))
blockchain.UseLogger(btclog.NewSubsystemLogger(backendLogger, "CHAN: "))
indexers.UseLogger(btclog.NewSubsystemLogger(backendLogger, "INDX: "))
// Load the block database.
db, err := loadBlockDB()
if err != nil {
log.Errorf("Failed to load database: %v", err)
return err
}
defer db.Close()
fi, err := os.Open(cfg.InFile)
if err != nil {
log.Errorf("Failed to open file %v: %v", cfg.InFile, err)
return err
}
defer fi.Close()
// Create a block importer for the database and input file and start it.
// The done channel returned from start will contain an error if
// anything went wrong.
importer, err := newBlockImporter(db, fi)
if err != nil {
log.Errorf("Failed create block importer: %v", err)
return err
}
// Perform the import asynchronously. This allows blocks to be
// processed and read in parallel. The results channel returned from
// Import contains the statistics about the import including an error
// if something went wrong.
log.Info("Starting import")
resultsChan := importer.Import()
results := <-resultsChan
if results.err != nil {
log.Errorf("%v", results.err)
return results.err
}
log.Infof("Processed a total of %d blocks (%d imported, %d already "+
"known)", results.blocksProcessed, results.blocksImported,
results.blocksProcessed-results.blocksImported)
return nil
}
func main() {
// Use all processor cores and up some limits.
runtime.GOMAXPROCS(runtime.NumCPU())
if err := limits.SetLimits(); err != nil {
os.Exit(1)
}
// Work around defer not working after os.Exit()
if err := realMain(); err != nil {
os.Exit(1)
}
}