libp2p/go-libp2p-peerstore
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Merge pull request from raulk/txndatastore

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Migrate to ds.TxnDatastore, optimisations++, cache changes, benchmarks
This commit is contained in:
Raúl Kripalani 2018-09-14 10:34:16 +01:00 committed by GitHub
commit 9194e8fbdf
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GPG Key ID: 4AEE18F83AFDEB23
10 changed files with 788 additions and 291 deletions

543
pstoreds/addr_book.go
View File

@ -17,36 +17,43 @@ import (
pstoremem "github.com/libp2p/go-libp2p-peerstore/pstoremem"
)
var log = logging.Logger("peerstore/ds")
// Number of times to retry transactional writes
var dsWriteRetries = 5
var (
log = logging.Logger("peerstore/ds")
)
var _ pstore.AddrBook = (*dsAddrBook)(nil)
// dsAddrBook is an address book backed by a Datastore with both an
// in-memory TTL manager and an in-memory address stream manager.
type dsAddrBook struct {
cache *lru.ARCCache
ds ds.Batching
ttlManager *ttlmanager
subsManager *pstoremem.AddrSubManager
cache cache
ds ds.TxnDatastore
ttlManager *ttlManager
subsManager *pstoremem.AddrSubManager
writeRetries int
}
// NewAddrBook initializes a new address book given a
// Datastore instance, a context for managing the TTL manager,
// and the interval at which the TTL manager should sweep the Datastore.
func NewAddrBook(ctx context.Context, ds ds.Batching, ttlInterval time.Duration) (*dsAddrBook, error) {
cache, err := lru.NewARC(1024)
if err != nil {
return nil, err
func NewAddrBook(ctx context.Context, ds ds.TxnDatastore, opts Options) (*dsAddrBook, error) {
var (
cache cache = &noopCache{}
err error
)
if opts.CacheSize > 0 {
if cache, err = lru.NewARC(int(opts.CacheSize)); err != nil {
return nil, err
}
}
mgr := &dsAddrBook{
cache: cache,
ds: ds,
ttlManager: newTTLManager(ctx, ds, cache, ttlInterval),
subsManager: pstoremem.NewAddrSubManager(),
cache: cache,
ds: ds,
ttlManager: newTTLManager(ctx, ds, &cache, opts.TTLInterval),
subsManager: pstoremem.NewAddrSubManager(),
writeRetries: int(opts.WriteRetries),
}
return mgr, nil
}
@ -56,17 +63,29 @@ func (mgr *dsAddrBook) Stop() {
mgr.ttlManager.cancel()
}
func peerAddressKey(p *peer.ID, addr *ma.Multiaddr) (ds.Key, error) {
hash, err := mh.Sum((*addr).Bytes(), mh.MURMUR3, -1)
if err != nil {
return ds.Key{}, nil
}
return ds.NewKey(peer.IDB58Encode(*p)).ChildString(hash.B58String()), nil
}
func keysAndAddrs(p peer.ID, addrs []ma.Multiaddr) ([]ds.Key, []ma.Multiaddr, error) {
var (
keys = make([]ds.Key, len(addrs))
clean = make([]ma.Multiaddr, len(addrs))
parentKey = ds.NewKey(peer.IDB58Encode(p))
i = 0
)
func peerIDFromKey(key ds.Key) (peer.ID, error) {
idstring := key.Parent().Name()
return peer.IDB58Decode(idstring)
for _, addr := range addrs {
if addr == nil {
continue
}
hash, err := mh.Sum((addr).Bytes(), mh.MURMUR3, -1)
if err != nil {
return nil, nil, err
}
keys[i] = parentKey.ChildString(hash.B58String())
clean[i] = addr
i++
}
return keys[:i], clean[:i], nil
}
// AddAddr will add a new address if it's not already in the AddrBook.
@ -79,141 +98,208 @@ func (mgr *dsAddrBook) AddAddrs(p peer.ID, addrs []ma.Multiaddr, ttl time.Durati
if ttl <= 0 {
return
}
mgr.setAddrs(p, addrs, ttl, true)
mgr.setAddrs(p, addrs, ttl, false)
}
// SetAddr will add or update the TTL of an address in the AddrBook.
func (mgr *dsAddrBook) SetAddr(p peer.ID, addr ma.Multiaddr, ttl time.Duration) {
mgr.SetAddrs(p, []ma.Multiaddr{addr}, ttl)
addrs := []ma.Multiaddr{addr}
mgr.SetAddrs(p, addrs, ttl)
}
// SetAddrs will add or update the TTLs of addresses in the AddrBook.
func (mgr *dsAddrBook) SetAddrs(p peer.ID, addrs []ma.Multiaddr, ttl time.Duration) {
mgr.setAddrs(p, addrs, ttl, false)
}
func (mgr *dsAddrBook) setAddrs(p peer.ID, addrs []ma.Multiaddr, ttl time.Duration, add bool) {
for i := 0; i < dsWriteRetries; i++ {
// keys to add to the TTL manager
var keys []ds.Key
batch, err := mgr.ds.Batch()
if err != nil {
log.Error(err)
return
}
for _, addr := range addrs {
if addr == nil {
continue
}
key, err := peerAddressKey(&p, &addr)
if err != nil {
log.Error(err)
continue
}
keys = append(keys, key)
if ttl <= 0 {
if err := batch.Delete(key); err != nil {
log.Error(err)
} else {
mgr.cache.Remove(key)
}
continue
}
has := mgr.cache.Contains(key)
if !has {
has, err = mgr.ds.Has(key)
}
if err != nil || !has {
mgr.subsManager.BroadcastAddr(p, addr)
}
// Allows us to support AddAddr and SetAddr in one function
if !has {
if err := batch.Put(key, addr.Bytes()); err != nil {
log.Error(err)
} else {
mgr.cache.Add(key, addr.Bytes())
}
}
}
if err := batch.Commit(); err != nil {
log.Errorf("failed to write addresses for peer %s: %s\n", p.Pretty(), err)
continue
}
mgr.ttlManager.setTTLs(keys, ttl, add)
if ttl <= 0 {
mgr.deleteAddrs(p, addrs)
return
}
log.Errorf("failed to avoid write conflict for peer %s after %d retries\n", p.Pretty(), dsWriteRetries)
mgr.setAddrs(p, addrs, ttl, true)
}
func (mgr *dsAddrBook) deleteAddrs(p peer.ID, addrs []ma.Multiaddr) error {
// Keys and cleaned up addresses.
keys, addrs, err := keysAndAddrs(p, addrs)
if err != nil {
return err
}
mgr.cache.Remove(p.Pretty())
// Attempt transactional KV deletion.
for i := 0; i < mgr.writeRetries; i++ {
if err = mgr.dbDelete(keys); err == nil {
break
}
log.Errorf("failed to delete addresses for peer %s: %s\n", p.Pretty(), err)
}
if err != nil {
log.Errorf("failed to avoid write conflict for peer %s after %d retries: %v\n", p.Pretty(), mgr.writeRetries, err)
return err
}
mgr.ttlManager.deleteTTLs(keys)
return nil
}
func (mgr *dsAddrBook) setAddrs(p peer.ID, addrs []ma.Multiaddr, ttl time.Duration, ttlReset bool) error {
// Keys and cleaned up addresses.
keys, addrs, err := keysAndAddrs(p, addrs)
if err != nil {
return err
}
mgr.cache.Remove(p.Pretty())
// Attempt transactional KV insertion.
var existed []bool
for i := 0; i < mgr.writeRetries; i++ {
if existed, err = mgr.dbInsert(keys, addrs); err == nil {
break
}
log.Errorf("failed to write addresses for peer %s: %s\n", p.Pretty(), err)
}
if err != nil {
log.Errorf("failed to avoid write conflict for peer %s after %d retries: %v\n", p.Pretty(), mgr.writeRetries, err)
return err
}
// Update was successful, so broadcast event only for new addresses.
for i, _ := range keys {
if !existed[i] {
mgr.subsManager.BroadcastAddr(p, addrs[i])
}
}
// Force update TTLs only if TTL reset was requested; otherwise
// insert the appropriate TTL entries if they don't already exist.
if ttlReset {
mgr.ttlManager.setTTLs(keys, ttl)
} else {
mgr.ttlManager.insertOrExtendTTLs(keys, ttl)
}
return nil
}
// dbInsert performs a transactional insert of the provided keys and values.
func (mgr *dsAddrBook) dbInsert(keys []ds.Key, addrs []ma.Multiaddr) ([]bool, error) {
var (
err error
existed = make([]bool, len(keys))
)
txn := mgr.ds.NewTransaction(false)
defer txn.Discard()
for i, key := range keys {
// Check if the key existed previously.
if existed[i], err = txn.Has(key); err != nil {
log.Errorf("transaction failed and aborted while checking key existence: %s, cause: %v", key.String(), err)
return nil, err
}
// The key embeds a hash of the value, so if it existed, we can safely skip the insert.
if existed[i] {
continue
}
// Attempt to add the key.
if err = txn.Put(key, addrs[i].Bytes()); err != nil {
log.Errorf("transaction failed and aborted while setting key: %s, cause: %v", key.String(), err)
return nil, err
}
}
if err = txn.Commit(); err != nil {
log.Errorf("failed to commit transaction when setting keys, cause: %v", err)
return nil, err
}
return existed, nil
}
// UpdateAddrs will update any addresses for a given peer and TTL combination to
// have a new TTL.
func (mgr *dsAddrBook) UpdateAddrs(p peer.ID, oldTTL time.Duration, newTTL time.Duration) {
prefix := ds.NewKey(p.Pretty())
mgr.ttlManager.updateTTLs(prefix, oldTTL, newTTL)
mgr.ttlManager.adjustTTLs(prefix, oldTTL, newTTL)
}
// Addrs Returns all of the non-expired addresses for a given peer.
// Addrs returns all of the non-expired addresses for a given peer.
func (mgr *dsAddrBook) Addrs(p peer.ID) []ma.Multiaddr {
prefix := ds.NewKey(p.Pretty())
q := query.Query{Prefix: prefix.String(), KeysOnly: true}
results, err := mgr.ds.Query(q)
if err != nil {
var (
prefix = ds.NewKey(p.Pretty())
q = query.Query{Prefix: prefix.String(), KeysOnly: false}
results query.Results
err error
)
// Check the cache.
if entry, ok := mgr.cache.Get(p.Pretty()); ok {
e := entry.([]ma.Multiaddr)
addrs := make([]ma.Multiaddr, len(e))
copy(addrs, e)
return addrs
}
txn := mgr.ds.NewTransaction(true)
defer txn.Discard()
if results, err = txn.Query(q); err != nil {
log.Error(err)
return nil
}
defer results.Close()
var addrs []ma.Multiaddr
for result := range results.Next() {
key := ds.RawKey(result.Key)
var addri interface{}
addri, ok := mgr.cache.Get(key)
if !ok {
addri, err = mgr.ds.Get(key)
if err != nil {
log.Error(err)
continue
}
if addr, err := ma.NewMultiaddrBytes(result.Value); err == nil {
addrs = append(addrs, addr)
}
addrbytes := addri.([]byte)
addr, err := ma.NewMultiaddrBytes(addrbytes)
if err != nil {
log.Error(err)
continue
}
addrs = append(addrs, addr)
}
// Store a copy in the cache.
addrsCpy := make([]ma.Multiaddr, len(addrs))
copy(addrsCpy, addrs)
mgr.cache.Add(p.Pretty(), addrsCpy)
return addrs
}
// Peers returns all of the peer IDs for which the AddrBook has addresses.
func (mgr *dsAddrBook) PeersWithAddrs() peer.IDSlice {
q := query.Query{KeysOnly: true}
results, err := mgr.ds.Query(q)
if err != nil {
var (
q = query.Query{KeysOnly: true}
results query.Results
err error
)
txn := mgr.ds.NewTransaction(true)
defer txn.Discard()
if results, err = txn.Query(q); err != nil {
log.Error(err)
return peer.IDSlice{}
}
idset := make(map[peer.ID]struct{})
defer results.Close()
idset := make(map[string]struct{})
for result := range results.Next() {
key := ds.RawKey(result.Key)
id, err := peerIDFromKey(key)
if err != nil {
continue
}
idset[id] = struct{}{}
idset[key.Parent().Name()] = struct{}{}
}
ids := make(peer.IDSlice, 0, len(idset))
if len(idset) == 0 {
return peer.IDSlice{}
}
ids := make(peer.IDSlice, len(idset))
i := 0
for id := range idset {
ids = append(ids, id)
pid, _ := peer.IDB58Decode(id)
ids[i] = pid
i++
}
return ids
}
@ -227,70 +313,128 @@ func (mgr *dsAddrBook) AddrStream(ctx context.Context, p peer.ID) <-chan ma.Mult
// ClearAddrs will delete all known addresses for a peer ID.
func (mgr *dsAddrBook) ClearAddrs(p peer.ID) {
prefix := ds.NewKey(p.Pretty())
for i := 0; i < dsWriteRetries; i++ {
q := query.Query{Prefix: prefix.String(), KeysOnly: true}
results, err := mgr.ds.Query(q)
if err != nil {
log.Error(err)
return
}
batch, err := mgr.ds.Batch()
if err != nil {
log.Error(err)
return
}
var (
err error
prefix = ds.NewKey(p.Pretty())
deleteFn func() error
)
for result := range results.Next() {
key := ds.NewKey(result.Key)
err := batch.Delete(key)
if err != nil {
// From inspectin badger, errors here signify a problem with
// the transaction as a whole, so we can log and abort.
log.Error(err)
return
}
mgr.cache.Remove(key)
if e, ok := mgr.cache.Peek(p.Pretty()); ok {
mgr.cache.Remove(p.Pretty())
keys, _, _ := keysAndAddrs(p, e.([]ma.Multiaddr))
deleteFn = func() error {
return mgr.dbDelete(keys)
}
if err = batch.Commit(); err != nil {
log.Errorf("failed to clear addresses for peer %s: %s\n", p.Pretty(), err)
continue
} else {
deleteFn = func() error {
_, err := mgr.dbDeleteIter(prefix)
return err
}
mgr.ttlManager.clear(ds.NewKey(p.Pretty()))
return
}
log.Errorf("failed to clear addresses for peer %s after %d attempts\n", p.Pretty(), dsWriteRetries)
// Attempt transactional KV deletion.
for i := 0; i < mgr.writeRetries; i++ {
if err = deleteFn(); err == nil {
break
}
log.Errorf("failed to clear addresses for peer %s: %s\n", p.Pretty(), err)
}
if err != nil {
log.Errorf("failed to clear addresses for peer %s after %d attempts\n", p.Pretty(), mgr.writeRetries)
}
// Perform housekeeping.
mgr.ttlManager.clear(prefix)
}
type ttlentry struct {
// dbDelete transactionally deletes the provided keys.
func (mgr *dsAddrBook) dbDelete(keys []ds.Key) error {
txn := mgr.ds.NewTransaction(false)
defer txn.Discard()
for _, key := range keys {
if err := txn.Delete(key); err != nil {
log.Errorf("failed to delete key: %s, cause: %v", key.String(), err)
return err
}
}
if err := txn.Commit(); err != nil {
log.Errorf("failed to commit transaction when deleting keys, cause: %v", err)
return err
}
return nil
}
// dbDeleteIter removes all entries whose keys are prefixed with the argument.
// it returns a slice of the removed keys in case it's needed
func (mgr *dsAddrBook) dbDeleteIter(prefix ds.Key) ([]ds.Key, error) {
q := query.Query{Prefix: prefix.String(), KeysOnly: true}
txn := mgr.ds.NewTransaction(false)
defer txn.Discard()
results, err := txn.Query(q)
if err != nil {
log.Errorf("failed to fetch all keys prefixed with: %s, cause: %v", prefix.String(), err)
return nil, err
}
var keys []ds.Key
for result := range results.Next() {
key := ds.RawKey(result.Key)
keys = append(keys, key)
if err = txn.Delete(key); err != nil {
log.Errorf("failed to delete key: %s, cause: %v", key.String(), err)
return nil, err
}
}
if err := results.Close(); err != nil {
log.Errorf("failed to close cursor, cause: %v", err)
return nil, err
}
if err = txn.Commit(); err != nil {
log.Errorf("failed to commit transaction when deleting keys, cause: %v", err)
return nil, err
}
return keys, nil
}
type ttlEntry struct {
TTL time.Duration
ExpiresAt time.Time
}
type ttlmanager struct {
type ttlManager struct {
sync.RWMutex
entries map[ds.Key]*ttlentry
entries map[ds.Key]*ttlEntry
ctx context.Context
cancel context.CancelFunc
ticker *time.Ticker
ds ds.Batching
cache *lru.ARCCache
ds ds.TxnDatastore
cache cache
}
func newTTLManager(parent context.Context, d ds.Datastore, c *lru.ARCCache, tick time.Duration) *ttlmanager {
func newTTLManager(parent context.Context, d ds.Datastore, c *cache, tick time.Duration) *ttlManager {
ctx, cancel := context.WithCancel(parent)
batching, ok := d.(ds.Batching)
txnDs, ok := d.(ds.TxnDatastore)
if !ok {
panic("must construct ttlmanager with batching datastore")
panic("must construct ttlManager with transactional datastore")
}
mgr := &ttlmanager{
entries: make(map[ds.Key]*ttlentry),
mgr := &ttlManager{
entries: make(map[ds.Key]*ttlEntry),
ctx: ctx,
cancel: cancel,
ticker: time.NewTicker(tick),
ds: batching,
cache: c,
ds: txnDs,
cache: *c,
}
go func() {
@ -309,57 +453,72 @@ func newTTLManager(parent context.Context, d ds.Datastore, c *lru.ARCCache, tick
}
// To be called by TTL manager's coroutine only.
func (mgr *ttlmanager) tick() {
func (mgr *ttlManager) tick() {
mgr.Lock()
defer mgr.Unlock()
now := time.Now()
batch, err := mgr.ds.Batch()
if err != nil {
log.Error(err)
var toDel []ds.Key
for key, entry := range mgr.entries {
if entry.ExpiresAt.After(now) {
continue
}
toDel = append(toDel, key)
}
if len(toDel) == 0 {
return
}
for key, entry := range mgr.entries {
if entry.ExpiresAt.Before(now) {
if err := batch.Delete(key); err != nil {
log.Error(err)
} else {
mgr.cache.Remove(key)
}
delete(mgr.entries, key)
txn := mgr.ds.NewTransaction(false)
defer txn.Discard()
for _, key := range toDel {
if err := txn.Delete(key); err != nil {
log.Error("failed to delete TTL key: %v, cause: %v", key.String(), err)
break
}
mgr.cache.Remove(key.Parent().Name())
delete(mgr.entries, key)
}
err = batch.Commit()
if err != nil {
log.Error(err)
if err := txn.Commit(); err != nil {
log.Error("failed to commit TTL deletion, cause: %v", err)
}
}
func (mgr *ttlmanager) setTTLs(keys []ds.Key, ttl time.Duration, add bool) {
func (mgr *ttlManager) deleteTTLs(keys []ds.Key) {
mgr.Lock()
defer mgr.Unlock()
for _, key := range keys {
delete(mgr.entries, key)
}
}
func (mgr *ttlManager) insertOrExtendTTLs(keys []ds.Key, ttl time.Duration) {
mgr.Lock()
defer mgr.Unlock()
expiration := time.Now().Add(ttl)
for _, key := range keys {
update := true
if add {
if entry, ok := mgr.entries[key]; ok {
if entry.ExpiresAt.After(expiration) {
update = false
}
}
}
if update {
if ttl <= 0 {
delete(mgr.entries, key)
} else {
mgr.entries[key] = &ttlentry{TTL: ttl, ExpiresAt: expiration}
}
if entry, ok := mgr.entries[key]; !ok || (ok && entry.ExpiresAt.Before(expiration)) {
mgr.entries[key] = &ttlEntry{TTL: ttl, ExpiresAt: expiration}
}
}
}
func (mgr *ttlmanager) updateTTLs(prefix ds.Key, oldTTL, newTTL time.Duration) {
func (mgr *ttlManager) setTTLs(keys []ds.Key, ttl time.Duration) {
mgr.Lock()
defer mgr.Unlock()
expiration := time.Now().Add(ttl)
for _, key := range keys {
mgr.entries[key] = &ttlEntry{TTL: ttl, ExpiresAt: expiration}
}
}
func (mgr *ttlManager) adjustTTLs(prefix ds.Key, oldTTL, newTTL time.Duration) {
mgr.Lock()
defer mgr.Unlock()
@ -374,7 +533,7 @@ func (mgr *ttlmanager) updateTTLs(prefix ds.Key, oldTTL, newTTL time.Duration) {
}
}
func (mgr *ttlmanager) clear(prefix ds.Key) {
func (mgr *ttlManager) clear(prefix ds.Key) {
mgr.Lock()
defer mgr.Unlock()

33
pstoreds/cache.go Normal file
View File

@ -0,0 +1,33 @@
package pstoreds
// cache abstracts all methods we access from ARCCache, to enable alternate
// implementations such as a no-op one.
type cache interface {
Get(key interface{}) (value interface{}, ok bool)
Add(key, value interface{})
Remove(key interface{})
Contains(key interface{}) bool
Peek(key interface{}) (value interface{}, ok bool)
}
// noopCache is a dummy implementation that's used when the cache is disabled.
type noopCache struct {
}
func (*noopCache) Get(key interface{}) (value interface{}, ok bool) {
return nil, false
}
func (*noopCache) Add(key, value interface{}) {
}
func (*noopCache) Remove(key interface{}) {
}
func (*noopCache) Contains(key interface{}) bool {
return false
}
func (*noopCache) Peek(key interface{}) (value interface{}, ok bool) {
return nil, false
}

170
pstoreds/ds_test.go
View File

@ -2,19 +2,159 @@ package pstoreds
import (
"context"
"fmt"
"io/ioutil"
"os"
"testing"
"time"
bd "github.com/dgraph-io/badger"
ds "github.com/ipfs/go-datastore"
"github.com/ipfs/go-ds-badger"
badger "github.com/ipfs/go-ds-badger"
pstore "github.com/libp2p/go-libp2p-peerstore"
pt "github.com/libp2p/go-libp2p-peerstore/test"
)
func setupBadgerDatastore(t testing.TB) (ds.Batching, func()) {
func BenchmarkBaselineBadgerDatastorePutEntry(b *testing.B) {
bds, closer := badgerStore(b)
defer closer()
b.ResetTimer()
for i := 0; i < b.N; i++ {
txn := bds.NewTransaction(false)
key := ds.RawKey(fmt.Sprintf("/key/%d", i))
txn.Put(key, []byte(fmt.Sprintf("/value/%d", i)))
txn.Commit()
txn.Discard()
}
}
func BenchmarkBaselineBadgerDatastoreGetEntry(b *testing.B) {
bds, closer := badgerStore(b)
defer closer()
txn := bds.NewTransaction(false)
keys := make([]ds.Key, 1000)
for i := 0; i < 1000; i++ {
key := ds.RawKey(fmt.Sprintf("/key/%d", i))
txn.Put(key, []byte(fmt.Sprintf("/value/%d", i)))
keys[i] = key
}
if err := txn.Commit(); err != nil {
b.Fatal(err)
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
txn := bds.NewTransaction(true)
if _, err := txn.Get(keys[i%1000]); err != nil {
b.Fatal(err)
}
txn.Discard()
}
}
func BenchmarkBaselineBadgerDirectPutEntry(b *testing.B) {
opts := bd.DefaultOptions
dataPath, err := ioutil.TempDir(os.TempDir(), "badger")
if err != nil {
b.Fatal(err)
}
opts.Dir = dataPath
opts.ValueDir = dataPath
opts.SyncWrites = false
db, err := bd.Open(opts)
if err != nil {
b.Fatal(err)
}
defer db.Close()
b.ResetTimer()
for i := 0; i < b.N; i++ {
txn := db.NewTransaction(true)
txn.Set([]byte(fmt.Sprintf("/key/%d", i)), []byte(fmt.Sprintf("/value/%d", i)))
txn.Commit(nil)
}
}
func BenchmarkBaselineBadgerDirectGetEntry(b *testing.B) {
opts := bd.DefaultOptions
dataPath, err := ioutil.TempDir(os.TempDir(), "badger")
if err != nil {
b.Fatal(err)
}
opts.Dir = dataPath
opts.ValueDir = dataPath
db, err := bd.Open(opts)
if err != nil {
b.Fatal(err)
}
defer db.Close()
txn := db.NewTransaction(true)
for i := 0; i < 1000; i++ {
txn.Set([]byte(fmt.Sprintf("/key/%d", i)), []byte(fmt.Sprintf("/value/%d", i)))
}
txn.Commit(nil)
b.ResetTimer()
for i := 0; i < b.N; i++ {
txn := db.NewTransaction(false)
txn.Get([]byte(fmt.Sprintf("/key/%d", i%1000)))
txn.Discard()
}
}
func TestBadgerDsPeerstore(t *testing.T) {
pt.TestPeerstore(t, peerstoreFactory(t, DefaultOpts()))
}
func TestBadgerDsAddrBook(t *testing.T) {
t.Run("Cacheful", func(t *testing.T) {
t.Parallel()
opts := DefaultOpts()
opts.TTLInterval = 100 * time.Microsecond
opts.CacheSize = 1024
pt.TestAddrBook(t, addressBookFactory(t, opts))
})
t.Run("Cacheless", func(t *testing.T) {
t.Parallel()
opts := DefaultOpts()
opts.TTLInterval = 100 * time.Microsecond
opts.CacheSize = 0
pt.TestAddrBook(t, addressBookFactory(t, opts))
})
}
func BenchmarkBadgerDsPeerstore(b *testing.B) {
caching := DefaultOpts()
caching.CacheSize = 1024
cacheless := DefaultOpts()
cacheless.CacheSize = 0
pt.BenchmarkPeerstore(b, peerstoreFactory(b, caching), "Caching")
pt.BenchmarkPeerstore(b, peerstoreFactory(b, cacheless), "Cacheless")
}
func badgerStore(t testing.TB) (ds.TxnDatastore, func()) {
dataPath, err := ioutil.TempDir(os.TempDir(), "badger")
if err != nil {
t.Fatal(err)
@ -30,11 +170,11 @@ func setupBadgerDatastore(t testing.TB) (ds.Batching, func()) {
return ds, closer
}
func newPeerstoreFactory(tb testing.TB) pt.PeerstoreFactory {
func peerstoreFactory(tb testing.TB, opts Options) pt.PeerstoreFactory {
return func() (pstore.Peerstore, func()) {
ds, closeFunc := setupBadgerDatastore(tb)
ds, closeFunc := badgerStore(tb)
ps, err := NewPeerstore(context.Background(), ds)
ps, err := NewPeerstore(context.Background(), ds, opts)
if err != nil {
tb.Fatal(err)
}
@ -43,17 +183,13 @@ func newPeerstoreFactory(tb testing.TB) pt.PeerstoreFactory {
}
}
func TestBadgerDsPeerstore(t *testing.T) {
pt.TestPeerstore(t, newPeerstoreFactory(t))
}
func addressBookFactory(tb testing.TB, opts Options) pt.AddrBookFactory {
return func() (pstore.AddrBook, func()) {
ds, closeDB := badgerStore(tb)
func TestBadgerDsAddrBook(t *testing.T) {
pt.TestAddrBook(t, func() (pstore.AddrBook, func()) {
ds, closeDB := setupBadgerDatastore(t)
mgr, err := NewAddrBook(context.Background(), ds, 100*time.Microsecond)
mgr, err := NewAddrBook(context.Background(), ds, opts)
if err != nil {
t.Fatal(err)
tb.Fatal(err)
}
closeFunc := func() {
@ -61,9 +197,5 @@ func TestBadgerDsAddrBook(t *testing.T) {
closeDB()
}
return mgr, closeFunc
})
}
func BenchmarkBadgerDsPeerstore(b *testing.B) {
pt.BenchmarkPeerstore(b, newPeerstoreFactory(b))
}
}

29
pstoreds/peerstore.go
View File

@ -10,9 +10,34 @@ import (
pstoremem "github.com/libp2p/go-libp2p-peerstore/pstoremem"
)
// Configuration object for the peerstore.
type Options struct {
// The size of the in-memory cache. A value of 0 or lower disables the cache.
CacheSize uint
// Sweep interval to expire entries, only used when TTL is *not* natively managed
// by the underlying datastore.
TTLInterval time.Duration
// Number of times to retry transactional writes.
WriteRetries uint
}
// DefaultOpts returns the default options for a persistent peerstore:
// * Cache size: 1024
// * TTL sweep interval: 1 second
// * WriteRetries: 5
func DefaultOpts() Options {
return Options{
CacheSize: 1024,
TTLInterval: time.Second,
WriteRetries: 5,
}
}
// NewPeerstore creates a peerstore backed by the provided persistent datastore.
func NewPeerstore(ctx context.Context, ds ds.Batching) (pstore.Peerstore, error) {
addrBook, err := NewAddrBook(ctx, ds, time.Second)
func NewPeerstore(ctx context.Context, store ds.TxnDatastore, opts Options) (pstore.Peerstore, error) {
addrBook, err := NewAddrBook(ctx, store, opts)
if err != nil {
return nil, err
}

4
pstoremem/addr_book.go
View File

@ -162,10 +162,8 @@ func (mab *memoryAddrBook) UpdateAddrs(p peer.ID, oldTTL time.Duration, newTTL t
}
exp := time.Now().Add(newTTL)
// TODO: RK - Shorthand.
for i := range addrs {
aexp := &addrs[i]
if oldTTL == aexp.TTL {
if aexp := &addrs[i]; oldTTL == aexp.TTL {
aexp.TTL = newTTL
aexp.Expires = exp
}

2
pstoremem/inmem_test.go
View File

@ -28,5 +28,5 @@ func TestInMemoryKeyBook(t *testing.T) {
func BenchmarkInMemoryPeerstore(b *testing.B) {
pt.BenchmarkPeerstore(b, func() (pstore.Peerstore, func()) {
return NewPeerstore(), nil
})
}, "InMem")
}

83
test/addr_book_suite.go
View File

@ -18,6 +18,8 @@ var addressBookSuite = map[string]func(book pstore.AddrBook) func(*testing.T){
"UpdateTTLs": testUpdateTTLs,
"NilAddrsDontBreak": testNilAddrsDontBreak,
"AddressesExpire": testAddressesExpire,
"ClearWithIter": testClearWithIterator,
"PeersWithAddresses": testPeersWithAddrs,
}
type AddrBookFactory func() (pstore.AddrBook, func())
@ -152,25 +154,25 @@ func testUpdateTTLs(m pstore.AddrBook) func(t *testing.T) {
testHas(t, addrs2, m.Addrs(ids[1]))
// Will only affect addrs1[0].
m.UpdateAddrs(ids[0], time.Hour, time.Second)
m.UpdateAddrs(ids[0], time.Hour, 100*time.Microsecond)
// No immediate effect.
testHas(t, addrs1, m.Addrs(ids[0]))
testHas(t, addrs2, m.Addrs(ids[1]))
// After a wait, addrs[0] is gone.
time.Sleep(1200 * time.Millisecond)
time.Sleep(100 * time.Millisecond)
testHas(t, addrs1[1:2], m.Addrs(ids[0]))
testHas(t, addrs2, m.Addrs(ids[1]))
// Will only affect addrs2[0].
m.UpdateAddrs(ids[1], time.Hour, time.Second)
m.UpdateAddrs(ids[1], time.Hour, 100*time.Microsecond)
// No immediate effect.
testHas(t, addrs1[1:2], m.Addrs(ids[0]))
testHas(t, addrs2, m.Addrs(ids[1]))
time.Sleep(1200 * time.Millisecond)
time.Sleep(100 * time.Millisecond)
// First addrs is gone in both.
testHas(t, addrs1[1:], m.Addrs(ids[0]))
@ -207,33 +209,86 @@ func testAddressesExpire(m pstore.AddrBook) func(t *testing.T) {
testHas(t, addrs1, m.Addrs(ids[0]))
testHas(t, addrs2, m.Addrs(ids[1]))
m.SetAddr(ids[0], addrs1[0], time.Millisecond)
<-time.After(time.Millisecond * 5)
m.SetAddr(ids[0], addrs1[0], 100*time.Microsecond)
<-time.After(100 * time.Millisecond)
testHas(t, addrs1[1:3], m.Addrs(ids[0]))
testHas(t, addrs2, m.Addrs(ids[1]))
m.SetAddr(ids[0], addrs1[2], time.Millisecond)
<-time.After(time.Millisecond * 5)
m.SetAddr(ids[0], addrs1[2], 100*time.Microsecond)
<-time.After(100 * time.Millisecond)
testHas(t, addrs1[1:2], m.Addrs(ids[0]))
testHas(t, addrs2, m.Addrs(ids[1]))
m.SetAddr(ids[1], addrs2[0], time.Millisecond)
<-time.After(time.Millisecond * 5)
m.SetAddr(ids[1], addrs2[0], 100*time.Microsecond)
<-time.After(100 * time.Millisecond)
testHas(t, addrs1[1:2], m.Addrs(ids[0]))
testHas(t, addrs2[1:], m.Addrs(ids[1]))
m.SetAddr(ids[1], addrs2[1], time.Millisecond)
<-time.After(time.Millisecond * 5)
m.SetAddr(ids[1], addrs2[1], 100*time.Microsecond)
<-time.After(100 * time.Millisecond)
testHas(t, addrs1[1:2], m.Addrs(ids[0]))
testHas(t, nil, m.Addrs(ids[1]))
m.SetAddr(ids[0], addrs1[1], time.Millisecond)
<-time.After(time.Millisecond * 5)
m.SetAddr(ids[0], addrs1[1], 100*time.Microsecond)
<-time.After(100 * time.Millisecond)
testHas(t, nil, m.Addrs(ids[0]))
testHas(t, nil, m.Addrs(ids[1]))
}
}
func testClearWithIterator(m pstore.AddrBook) func(t *testing.T) {
return func(t *testing.T) {
ids := generatePeerIds(2)
addrs := generateAddrs(100)
// Add the peers with 50 addresses each.
m.AddAddrs(ids[0], addrs[:50], pstore.PermanentAddrTTL)
m.AddAddrs(ids[1], addrs[50:], pstore.PermanentAddrTTL)
if all := append(m.Addrs(ids[0]), m.Addrs(ids[1])...); len(all) != 100 {
t.Fatal("expected pstore to contain both peers with all their maddrs")
}
// Since we don't fetch these peers, they won't be present in cache.
m.ClearAddrs(ids[0])
if all := append(m.Addrs(ids[0]), m.Addrs(ids[1])...); len(all) != 50 {
t.Fatal("expected pstore to contain only addrs of peer 2")
}
m.ClearAddrs(ids[1])
if all := append(m.Addrs(ids[0]), m.Addrs(ids[1])...); len(all) != 0 {
t.Fatal("expected pstore to contain no addresses")
}
}
}
func testPeersWithAddrs(m pstore.AddrBook) func(t *testing.T) {
return func(t *testing.T) {
// cannot run in parallel as the store is modified.
// go runs sequentially in the specified order
// see https://blog.golang.org/subtests
t.Run("empty addrbook", func(t *testing.T) {
if peers := m.PeersWithAddrs(); len(peers) != 0 {
t.Fatal("expected to find no peers")
}
})
t.Run("non-empty addrbook", func(t *testing.T) {
ids := generatePeerIds(2)
addrs := generateAddrs(10)
m.AddAddrs(ids[0], addrs[:5], pstore.PermanentAddrTTL)
m.AddAddrs(ids[1], addrs[5:], pstore.PermanentAddrTTL)
if peers := m.PeersWithAddrs(); len(peers) != 2 {
t.Fatal("expected to find 2 peers")
}
})
}
}
func testHas(t *testing.T, exp, act []ma.Multiaddr) {
t.Helper()
if len(exp) != len(act) {

115
test/benchmarks_suite.go Normal file
View File

@ -0,0 +1,115 @@
package test
import (
"context"
"fmt"
"testing"
pstore "github.com/libp2p/go-libp2p-peerstore"
)
var peerstoreBenchmarks = map[string]func(pstore.Peerstore, chan *peerpair) func(*testing.B){
"AddAddrs": benchmarkAddAddrs,
"SetAddrs": benchmarkSetAddrs,
"GetAddrs": benchmarkGetAddrs,
// The in-between get allows us to benchmark the read-through cache.
"AddGetAndClearAddrs": benchmarkAddGetAndClearAddrs,
// Calls PeersWithAddr on a peerstore with 1000 peers.
"Get1000PeersWithAddrs": benchmarkGet1000PeersWithAddrs,
}
func BenchmarkPeerstore(b *testing.B, factory PeerstoreFactory, variant string) {
// Parameterises benchmarks to tackle peers with 1, 10, 100 multiaddrs.
params := []struct {
n int
ch chan *peerpair
}{
{1, make(chan *peerpair, 100)},
{10, make(chan *peerpair, 100)},
{100, make(chan *peerpair, 100)},
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Start all test peer producing goroutines, where each produces peers with as many
// multiaddrs as the n field in the param struct.
for _, p := range params {
go addressProducer(ctx, b, p.ch, p.n)
}
for name, bench := range peerstoreBenchmarks {
for _, p := range params {
// Create a new peerstore.
ps, closeFunc := factory()
// Run the test.
b.Run(fmt.Sprintf("%s-%dAddrs-%s", name, p.n, variant), bench(ps, p.ch))
// Cleanup.
if closeFunc != nil {
closeFunc()
}
}
}
}
func benchmarkAddAddrs(ps pstore.Peerstore, addrs chan *peerpair) func(*testing.B) {
return func(b *testing.B) {
b.ResetTimer()
for i := 0; i < b.N; i++ {
pp := <-addrs
ps.AddAddrs(pp.ID, pp.Addr, pstore.PermanentAddrTTL)
}
}
}
func benchmarkSetAddrs(ps pstore.Peerstore, addrs chan *peerpair) func(*testing.B) {
return func(b *testing.B) {
b.ResetTimer()
for i := 0; i < b.N; i++ {
pp := <-addrs
ps.SetAddrs(pp.ID, pp.Addr, pstore.PermanentAddrTTL)
}
}
}
func benchmarkGetAddrs(ps pstore.Peerstore, addrs chan *peerpair) func(*testing.B) {
return func(b *testing.B) {
pp := <-addrs
ps.SetAddrs(pp.ID, pp.Addr, pstore.PermanentAddrTTL)
b.ResetTimer()
for i := 0; i < b.N; i++ {
_ = ps.Addrs(pp.ID)
}
}
}
func benchmarkAddGetAndClearAddrs(ps pstore.Peerstore, addrs chan *peerpair) func(*testing.B) {
return func(b *testing.B) {
b.ResetTimer()
for i := 0; i < b.N; i++ {
pp := <-addrs
ps.AddAddrs(pp.ID, pp.Addr, pstore.PermanentAddrTTL)
ps.Addrs(pp.ID)
ps.ClearAddrs(pp.ID)
}
}
}
func benchmarkGet1000PeersWithAddrs(ps pstore.Peerstore, addrs chan *peerpair) func(*testing.B) {
return func(b *testing.B) {
var peers = make([]*peerpair, 1000)
for i, _ := range peers {
pp := <-addrs
ps.AddAddrs(pp.ID, pp.Addr, pstore.PermanentAddrTTL)
peers[i] = pp
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
_ = ps.PeersWithAddrs()
}
}
}

28
test/peerstore_suite.go
View File

@ -15,7 +15,7 @@ import (
pstore "github.com/libp2p/go-libp2p-peerstore"
)
var peerstoreSuite = map[string]func(book pstore.Peerstore) func(*testing.T){
var peerstoreSuite = map[string]func(pstore.Peerstore) func(*testing.T){
"AddrStream": testAddrStream,
"GetStreamBeforePeerAdded": testGetStreamBeforePeerAdded,
"AddStreamDuplicates": testAddrStreamDuplicates,
@ -40,16 +40,6 @@ func TestPeerstore(t *testing.T, factory PeerstoreFactory) {
}
}
func BenchmarkPeerstore(b *testing.B, factory PeerstoreFactory) {
ps, closeFunc := factory()
b.Run("Peerstore", benchmarkPeerstore(ps))
if closeFunc != nil {
closeFunc()
}
}
func testAddrStream(ps pstore.Peerstore) func(t *testing.T) {
return func(t *testing.T) {
addrs, pid := getAddrs(t, 100), peer.ID("testpeer")
@ -289,22 +279,6 @@ func testBasicPeerstore(ps pstore.Peerstore) func(t *testing.T) {
}
}
func benchmarkPeerstore(ps pstore.Peerstore) func(*testing.B) {
return func(b *testing.B) {
addrs := make(chan *peerpair, 100)
ctx, cancel := context.WithCancel(context.Background())
go addressProducer(ctx, b, addrs)
b.ResetTimer()
for i := 0; i < b.N; i++ {
pp := <-addrs
ps.AddAddr(pp.ID, pp.Addr, pstore.PermanentAddrTTL)
}
cancel()
}
}
func getAddrs(t *testing.T, n int) []ma.Multiaddr {
var addrs []ma.Multiaddr
for i := 0; i < n; i++ {

72
test/utils.go
View File

@ -10,39 +10,6 @@ import (
ma "github.com/multiformats/go-multiaddr"
)
type peerpair struct {
ID peer.ID
Addr ma.Multiaddr
}
func randomPeer(b *testing.B) *peerpair {
var pid peer.ID
var err error
var addr ma.Multiaddr
if pid, err = pt.RandPeerID(); err != nil {
b.Fatal(err)
}
if addr, err = ma.NewMultiaddr(fmt.Sprintf("/ip4/127.0.0.1/tcp/6666/ipfs/%s", pid.Pretty())); err != nil {
b.Fatal(err)
}
return &peerpair{pid, addr}
}
func addressProducer(ctx context.Context, b *testing.B, addrs chan *peerpair) {
defer close(addrs)
for {
p := randomPeer(b)
select {
case addrs <- p:
case <-ctx.Done():
return
}
}
}
func multiaddr(m string) ma.Multiaddr {
maddr, err := ma.NewMultiaddr(m)
if err != nil {
@ -50,3 +17,42 @@ func multiaddr(m string) ma.Multiaddr {
}
return maddr
}
type peerpair struct {
ID peer.ID
Addr []ma.Multiaddr
}
func randomPeer(b *testing.B, addrCount int) *peerpair {
var (
pid peer.ID
err error
addrs = make([]ma.Multiaddr, addrCount)
aFmt = "/ip4/127.0.0.1/tcp/%d/ipfs/%s"
)
b.Helper()
if pid, err = pt.RandPeerID(); err != nil {
b.Fatal(err)
}
for i := 0; i < addrCount; i++ {
if addrs[i], err = ma.NewMultiaddr(fmt.Sprintf(aFmt, i, pid.Pretty())); err != nil {
b.Fatal(err)
}
}
return &peerpair{pid, addrs}
}
func addressProducer(ctx context.Context, b *testing.B, addrs chan *peerpair, addrsPerPeer int) {
b.Helper()
defer close(addrs)
for {
p := randomPeer(b, addrsPerPeer)
select {
case addrs <- p:
case <-ctx.Done():
return
}
}
}