mirror of https://github.com/ethereum/go-ethereum
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
383 lines
11 KiB
383 lines
11 KiB
// Copyright 2014 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package ethdb
|
|
|
|
import (
|
|
"strconv"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum/log"
|
|
"github.com/ethereum/go-ethereum/metrics"
|
|
"github.com/syndtr/goleveldb/leveldb"
|
|
"github.com/syndtr/goleveldb/leveldb/errors"
|
|
"github.com/syndtr/goleveldb/leveldb/filter"
|
|
"github.com/syndtr/goleveldb/leveldb/iterator"
|
|
"github.com/syndtr/goleveldb/leveldb/opt"
|
|
)
|
|
|
|
var OpenFileLimit = 64
|
|
|
|
type LDBDatabase struct {
|
|
fn string // filename for reporting
|
|
db *leveldb.DB // LevelDB instance
|
|
|
|
compTimeMeter metrics.Meter // Meter for measuring the total time spent in database compaction
|
|
compReadMeter metrics.Meter // Meter for measuring the data read during compaction
|
|
compWriteMeter metrics.Meter // Meter for measuring the data written during compaction
|
|
diskReadMeter metrics.Meter // Meter for measuring the effective amount of data read
|
|
diskWriteMeter metrics.Meter // Meter for measuring the effective amount of data written
|
|
|
|
quitLock sync.Mutex // Mutex protecting the quit channel access
|
|
quitChan chan chan error // Quit channel to stop the metrics collection before closing the database
|
|
|
|
log log.Logger // Contextual logger tracking the database path
|
|
}
|
|
|
|
// NewLDBDatabase returns a LevelDB wrapped object.
|
|
func NewLDBDatabase(file string, cache int, handles int) (*LDBDatabase, error) {
|
|
logger := log.New("database", file)
|
|
|
|
// Ensure we have some minimal caching and file guarantees
|
|
if cache < 16 {
|
|
cache = 16
|
|
}
|
|
if handles < 16 {
|
|
handles = 16
|
|
}
|
|
logger.Info("Allocated cache and file handles", "cache", cache, "handles", handles)
|
|
|
|
// Open the db and recover any potential corruptions
|
|
db, err := leveldb.OpenFile(file, &opt.Options{
|
|
OpenFilesCacheCapacity: handles,
|
|
BlockCacheCapacity: cache / 2 * opt.MiB,
|
|
WriteBuffer: cache / 4 * opt.MiB, // Two of these are used internally
|
|
Filter: filter.NewBloomFilter(10),
|
|
})
|
|
if _, corrupted := err.(*errors.ErrCorrupted); corrupted {
|
|
db, err = leveldb.RecoverFile(file, nil)
|
|
}
|
|
// (Re)check for errors and abort if opening of the db failed
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &LDBDatabase{
|
|
fn: file,
|
|
db: db,
|
|
log: logger,
|
|
}, nil
|
|
}
|
|
|
|
// Path returns the path to the database directory.
|
|
func (db *LDBDatabase) Path() string {
|
|
return db.fn
|
|
}
|
|
|
|
// Put puts the given key / value to the queue
|
|
func (db *LDBDatabase) Put(key []byte, value []byte) error {
|
|
// Generate the data to write to disk, update the meter and write
|
|
//value = rle.Compress(value)
|
|
|
|
return db.db.Put(key, value, nil)
|
|
}
|
|
|
|
func (db *LDBDatabase) Has(key []byte) (bool, error) {
|
|
return db.db.Has(key, nil)
|
|
}
|
|
|
|
// Get returns the given key if it's present.
|
|
func (db *LDBDatabase) Get(key []byte) ([]byte, error) {
|
|
// Retrieve the key and increment the miss counter if not found
|
|
dat, err := db.db.Get(key, nil)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return dat, nil
|
|
//return rle.Decompress(dat)
|
|
}
|
|
|
|
// Delete deletes the key from the queue and database
|
|
func (db *LDBDatabase) Delete(key []byte) error {
|
|
// Execute the actual operation
|
|
return db.db.Delete(key, nil)
|
|
}
|
|
|
|
func (db *LDBDatabase) NewIterator() iterator.Iterator {
|
|
return db.db.NewIterator(nil, nil)
|
|
}
|
|
|
|
func (db *LDBDatabase) Close() {
|
|
// Stop the metrics collection to avoid internal database races
|
|
db.quitLock.Lock()
|
|
defer db.quitLock.Unlock()
|
|
|
|
if db.quitChan != nil {
|
|
errc := make(chan error)
|
|
db.quitChan <- errc
|
|
if err := <-errc; err != nil {
|
|
db.log.Error("Metrics collection failed", "err", err)
|
|
}
|
|
}
|
|
err := db.db.Close()
|
|
if err == nil {
|
|
db.log.Info("Database closed")
|
|
} else {
|
|
db.log.Error("Failed to close database", "err", err)
|
|
}
|
|
}
|
|
|
|
func (db *LDBDatabase) LDB() *leveldb.DB {
|
|
return db.db
|
|
}
|
|
|
|
// Meter configures the database metrics collectors and
|
|
func (db *LDBDatabase) Meter(prefix string) {
|
|
// Short circuit metering if the metrics system is disabled
|
|
if !metrics.Enabled {
|
|
return
|
|
}
|
|
// Initialize all the metrics collector at the requested prefix
|
|
db.compTimeMeter = metrics.NewRegisteredMeter(prefix+"compact/time", nil)
|
|
db.compReadMeter = metrics.NewRegisteredMeter(prefix+"compact/input", nil)
|
|
db.compWriteMeter = metrics.NewRegisteredMeter(prefix+"compact/output", nil)
|
|
db.diskReadMeter = metrics.NewRegisteredMeter(prefix+"disk/read", nil)
|
|
db.diskWriteMeter = metrics.NewRegisteredMeter(prefix+"disk/write", nil)
|
|
|
|
// Create a quit channel for the periodic collector and run it
|
|
db.quitLock.Lock()
|
|
db.quitChan = make(chan chan error)
|
|
db.quitLock.Unlock()
|
|
|
|
go db.meter(3 * time.Second)
|
|
}
|
|
|
|
// meter periodically retrieves internal leveldb counters and reports them to
|
|
// the metrics subsystem.
|
|
//
|
|
// This is how a stats table look like (currently):
|
|
// Compactions
|
|
// Level | Tables | Size(MB) | Time(sec) | Read(MB) | Write(MB)
|
|
// -------+------------+---------------+---------------+---------------+---------------
|
|
// 0 | 0 | 0.00000 | 1.27969 | 0.00000 | 12.31098
|
|
// 1 | 85 | 109.27913 | 28.09293 | 213.92493 | 214.26294
|
|
// 2 | 523 | 1000.37159 | 7.26059 | 66.86342 | 66.77884
|
|
// 3 | 570 | 1113.18458 | 0.00000 | 0.00000 | 0.00000
|
|
//
|
|
// This is how the iostats look like (currently):
|
|
// Read(MB):3895.04860 Write(MB):3654.64712
|
|
func (db *LDBDatabase) meter(refresh time.Duration) {
|
|
// Create the counters to store current and previous compaction values
|
|
compactions := make([][]float64, 2)
|
|
for i := 0; i < 2; i++ {
|
|
compactions[i] = make([]float64, 3)
|
|
}
|
|
// Create storage for iostats.
|
|
var iostats [2]float64
|
|
// Iterate ad infinitum and collect the stats
|
|
for i := 1; ; i++ {
|
|
// Retrieve the database stats
|
|
stats, err := db.db.GetProperty("leveldb.stats")
|
|
if err != nil {
|
|
db.log.Error("Failed to read database stats", "err", err)
|
|
return
|
|
}
|
|
// Find the compaction table, skip the header
|
|
lines := strings.Split(stats, "\n")
|
|
for len(lines) > 0 && strings.TrimSpace(lines[0]) != "Compactions" {
|
|
lines = lines[1:]
|
|
}
|
|
if len(lines) <= 3 {
|
|
db.log.Error("Compaction table not found")
|
|
return
|
|
}
|
|
lines = lines[3:]
|
|
|
|
// Iterate over all the table rows, and accumulate the entries
|
|
for j := 0; j < len(compactions[i%2]); j++ {
|
|
compactions[i%2][j] = 0
|
|
}
|
|
for _, line := range lines {
|
|
parts := strings.Split(line, "|")
|
|
if len(parts) != 6 {
|
|
break
|
|
}
|
|
for idx, counter := range parts[3:] {
|
|
value, err := strconv.ParseFloat(strings.TrimSpace(counter), 64)
|
|
if err != nil {
|
|
db.log.Error("Compaction entry parsing failed", "err", err)
|
|
return
|
|
}
|
|
compactions[i%2][idx] += value
|
|
}
|
|
}
|
|
// Update all the requested meters
|
|
if db.compTimeMeter != nil {
|
|
db.compTimeMeter.Mark(int64((compactions[i%2][0] - compactions[(i-1)%2][0]) * 1000 * 1000 * 1000))
|
|
}
|
|
if db.compReadMeter != nil {
|
|
db.compReadMeter.Mark(int64((compactions[i%2][1] - compactions[(i-1)%2][1]) * 1024 * 1024))
|
|
}
|
|
if db.compWriteMeter != nil {
|
|
db.compWriteMeter.Mark(int64((compactions[i%2][2] - compactions[(i-1)%2][2]) * 1024 * 1024))
|
|
}
|
|
|
|
// Retrieve the database iostats.
|
|
ioStats, err := db.db.GetProperty("leveldb.iostats")
|
|
if err != nil {
|
|
db.log.Error("Failed to read database iostats", "err", err)
|
|
return
|
|
}
|
|
parts := strings.Split(ioStats, " ")
|
|
if len(parts) < 2 {
|
|
db.log.Error("Bad syntax of ioStats", "ioStats", ioStats)
|
|
return
|
|
}
|
|
r := strings.Split(parts[0], ":")
|
|
if len(r) < 2 {
|
|
db.log.Error("Bad syntax of read entry", "entry", parts[0])
|
|
return
|
|
}
|
|
read, err := strconv.ParseFloat(r[1], 64)
|
|
if err != nil {
|
|
db.log.Error("Read entry parsing failed", "err", err)
|
|
return
|
|
}
|
|
w := strings.Split(parts[1], ":")
|
|
if len(w) < 2 {
|
|
db.log.Error("Bad syntax of write entry", "entry", parts[1])
|
|
return
|
|
}
|
|
write, err := strconv.ParseFloat(w[1], 64)
|
|
if err != nil {
|
|
db.log.Error("Write entry parsing failed", "err", err)
|
|
return
|
|
}
|
|
if db.diskReadMeter != nil {
|
|
db.diskReadMeter.Mark(int64((read - iostats[0]) * 1024 * 1024))
|
|
}
|
|
if db.diskWriteMeter != nil {
|
|
db.diskWriteMeter.Mark(int64((write - iostats[1]) * 1024 * 1024))
|
|
}
|
|
iostats[0] = read
|
|
iostats[1] = write
|
|
|
|
// Sleep a bit, then repeat the stats collection
|
|
select {
|
|
case errc := <-db.quitChan:
|
|
// Quit requesting, stop hammering the database
|
|
errc <- nil
|
|
return
|
|
|
|
case <-time.After(refresh):
|
|
// Timeout, gather a new set of stats
|
|
}
|
|
}
|
|
}
|
|
|
|
func (db *LDBDatabase) NewBatch() Batch {
|
|
return &ldbBatch{db: db.db, b: new(leveldb.Batch)}
|
|
}
|
|
|
|
type ldbBatch struct {
|
|
db *leveldb.DB
|
|
b *leveldb.Batch
|
|
size int
|
|
}
|
|
|
|
func (b *ldbBatch) Put(key, value []byte) error {
|
|
b.b.Put(key, value)
|
|
b.size += len(value)
|
|
return nil
|
|
}
|
|
|
|
func (b *ldbBatch) Write() error {
|
|
return b.db.Write(b.b, nil)
|
|
}
|
|
|
|
func (b *ldbBatch) ValueSize() int {
|
|
return b.size
|
|
}
|
|
|
|
func (b *ldbBatch) Reset() {
|
|
b.b.Reset()
|
|
b.size = 0
|
|
}
|
|
|
|
type table struct {
|
|
db Database
|
|
prefix string
|
|
}
|
|
|
|
// NewTable returns a Database object that prefixes all keys with a given
|
|
// string.
|
|
func NewTable(db Database, prefix string) Database {
|
|
return &table{
|
|
db: db,
|
|
prefix: prefix,
|
|
}
|
|
}
|
|
|
|
func (dt *table) Put(key []byte, value []byte) error {
|
|
return dt.db.Put(append([]byte(dt.prefix), key...), value)
|
|
}
|
|
|
|
func (dt *table) Has(key []byte) (bool, error) {
|
|
return dt.db.Has(append([]byte(dt.prefix), key...))
|
|
}
|
|
|
|
func (dt *table) Get(key []byte) ([]byte, error) {
|
|
return dt.db.Get(append([]byte(dt.prefix), key...))
|
|
}
|
|
|
|
func (dt *table) Delete(key []byte) error {
|
|
return dt.db.Delete(append([]byte(dt.prefix), key...))
|
|
}
|
|
|
|
func (dt *table) Close() {
|
|
// Do nothing; don't close the underlying DB.
|
|
}
|
|
|
|
type tableBatch struct {
|
|
batch Batch
|
|
prefix string
|
|
}
|
|
|
|
// NewTableBatch returns a Batch object which prefixes all keys with a given string.
|
|
func NewTableBatch(db Database, prefix string) Batch {
|
|
return &tableBatch{db.NewBatch(), prefix}
|
|
}
|
|
|
|
func (dt *table) NewBatch() Batch {
|
|
return &tableBatch{dt.db.NewBatch(), dt.prefix}
|
|
}
|
|
|
|
func (tb *tableBatch) Put(key, value []byte) error {
|
|
return tb.batch.Put(append([]byte(tb.prefix), key...), value)
|
|
}
|
|
|
|
func (tb *tableBatch) Write() error {
|
|
return tb.batch.Write()
|
|
}
|
|
|
|
func (tb *tableBatch) ValueSize() int {
|
|
return tb.batch.ValueSize()
|
|
}
|
|
|
|
func (tb *tableBatch) Reset() {
|
|
tb.batch.Reset()
|
|
}
|
|
|