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allocations improvements and tunnel fixes (#1248)

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* reduce allocations in tunnel code

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

* another allocation fix

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

* allocate maps with len if it known

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

* allocate key for send once

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
This commit is contained in:
Василий Толстов 2020-02-24 17:15:20 +03:00 committed by GitHub
parent 01d88601c0
commit 5b0175c2e5
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
13 changed files with 58 additions and 31 deletions
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2
client/grpc/codec.go
View File

@ -155,7 +155,7 @@ func (g *grpcCodec) ReadHeader(m *codec.Message, mt codec.MessageType) error {
m = new(codec.Message)
}
if m.Header == nil {
m.Header = make(map[string]string)
m.Header = make(map[string]string, len(md))
}
for k, v := range md {
m.Header[k] = strings.Join(v, ",")

13
client/grpc/grpc.go
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@ -110,13 +110,18 @@ func (g *grpcClient) next(request client.Request, opts client.CallOptions) (sele
}
func (g *grpcClient) call(ctx context.Context, node *registry.Node, req client.Request, rsp interface{}, opts client.CallOptions) error {
var header map[string]string
address := node.Address
header := make(map[string]string)
header = make(map[string]string)
if md, ok := metadata.FromContext(ctx); ok {
header = make(map[string]string, len(md))
for k, v := range md {
header[k] = v
}
} else {
header = make(map[string]string)
}
// set timeout in nanoseconds
@ -182,13 +187,17 @@ func (g *grpcClient) call(ctx context.Context, node *registry.Node, req client.R
}
func (g *grpcClient) stream(ctx context.Context, node *registry.Node, req client.Request, opts client.CallOptions) (client.Stream, error) {
var header map[string]string
address := node.Address
header := make(map[string]string)
if md, ok := metadata.FromContext(ctx); ok {
header = make(map[string]string, len(md))
for k, v := range md {
header[k] = v
}
} else {
header = make(map[string]string)
}
// set timeout in nanoseconds

2
client/grpc/response.go
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@ -27,7 +27,7 @@ func (r *response) Header() map[string]string {
if err != nil {
return map[string]string{}
}
hdr := make(map[string]string)
hdr := make(map[string]string, len(md))
for k, v := range md {
hdr[k] = strings.Join(v, ",")
}

2
metadata/metadata.go
View File

@ -58,7 +58,7 @@ func FromContext(ctx context.Context) (Metadata, bool) {
}
// capitalise all values
newMD := make(map[string]string)
newMD := make(map[string]string, len(md))
for k, v := range md {
newMD[strings.Title(k)] = v
}

10
registry/memory/util.go
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@ -7,12 +7,12 @@ import (
)
func serviceToRecord(s *registry.Service, ttl time.Duration) *record {
metadata := make(map[string]string)
metadata := make(map[string]string, len(s.Metadata))
for k, v := range s.Metadata {
metadata[k] = v
}
nodes := make(map[string]*node)
nodes := make(map[string]*node, len(s.Nodes))
for _, n := range s.Nodes {
nodes[n.Id] = &node{
Node: n,
@ -36,7 +36,7 @@ func serviceToRecord(s *registry.Service, ttl time.Duration) *record {
}
func recordToService(r *record) *registry.Service {
metadata := make(map[string]string)
metadata := make(map[string]string, len(r.Metadata))
for k, v := range r.Metadata {
metadata[k] = v
}
@ -52,7 +52,7 @@ func recordToService(r *record) *registry.Service {
*response = *e.Response
}
metadata := make(map[string]string)
metadata := make(map[string]string, len(e.Metadata))
for k, v := range e.Metadata {
metadata[k] = v
}
@ -68,7 +68,7 @@ func recordToService(r *record) *registry.Service {
nodes := make([]*registry.Node, len(r.Nodes))
i := 0
for _, n := range r.Nodes {
metadata := make(map[string]string)
metadata := make(map[string]string, len(n.Metadata))
for k, v := range n.Metadata {
metadata[k] = v
}

2
server/grpc/codec.go
View File

@ -140,7 +140,7 @@ func (g *grpcCodec) ReadHeader(m *codec.Message, mt codec.MessageType) error {
m = new(codec.Message)
}
if m.Header == nil {
m.Header = make(map[string]string)
m.Header = make(map[string]string, len(md))
}
for k, v := range md {
m.Header[k] = strings.Join(v, ",")

2
server/grpc/subscriber.go
View File

@ -188,7 +188,7 @@ func (g *grpcServer) createSubHandler(sb *subscriber, opts server.Options) broke
return err
}
hdr := make(map[string]string)
hdr := make(map[string]string, len(msg.Header))
for k, v := range msg.Header {
hdr[k] = v
}

4
server/rpc_server.go
View File

@ -85,7 +85,7 @@ func (s *rpcServer) HandleEvent(e broker.Event) error {
}
// copy headers
hdr := make(map[string]string)
hdr := make(map[string]string, len(msg.Header))
for k, v := range msg.Header {
hdr[k] = v
}
@ -262,7 +262,7 @@ func (s *rpcServer) ServeConn(sock transport.Socket) {
ct := msg.Header["Content-Type"]
// copy the message headers
hdr := make(map[string]string)
hdr := make(map[string]string, len(msg.Header))
for k, v := range msg.Header {
hdr[k] = v
}

10
transport/http_transport.go
View File

@ -156,7 +156,7 @@ func (h *httpTransportClient) Recv(m *Message) error {
m.Body = b
if m.Header == nil {
m.Header = make(map[string]string)
m.Header = make(map[string]string, len(rsp.Header))
}
for k, v := range rsp.Header {
@ -193,10 +193,6 @@ func (h *httpTransportSocket) Recv(m *Message) error {
return errors.New("message passed in is nil")
}
if m.Header == nil {
m.Header = make(map[string]string)
}
// process http 1
if h.r.ProtoMajor == 1 {
// set timeout if its greater than 0
@ -228,6 +224,10 @@ func (h *httpTransportSocket) Recv(m *Message) error {
r.Body.Close()
m.Body = b
if m.Header == nil {
m.Header = make(map[string]string, len(r.Header))
}
// set headers
for k, v := range r.Header {
if len(v) > 0 {

23
tunnel/crypto.go
View File

@ -5,7 +5,16 @@ import (
"crypto/cipher"
"crypto/rand"
"crypto/sha256"
"io"
"github.com/oxtoacart/bpool"
)
var (
// the local buffer pool
// gcmStandardNonceSize from crypto/cipher/gcm.go is 12 bytes
// 100 - is max size of pool
noncePool = bpool.NewBytePool(100, 12)
hashPool = bpool.NewBytePool(1024*32, 32)
)
// hash hahes the data into 32 bytes key and returns it
@ -13,7 +22,10 @@ import (
func hash(key string) []byte {
hasher := sha256.New()
hasher.Write([]byte(key))
return hasher.Sum(nil)
out := hashPool.Get()
defer hashPool.Put(out[:0])
out = hasher.Sum(out[:0])
return out
}
// Encrypt encrypts data and returns the encrypted data
@ -32,12 +44,13 @@ func Encrypt(data []byte, key string) ([]byte, error) {
return nil, err
}
// create a new byte array the size of the nonce
// get new byte array the size of the nonce from pool
// NOTE: we might use smaller nonce size in the future
nonce := make([]byte, gcm.NonceSize())
if _, err = io.ReadFull(rand.Reader, nonce); err != nil {
nonce := noncePool.Get()
if _, err = rand.Read(nonce); err != nil {
return nil, err
}
defer noncePool.Put(nonce)
// NOTE: we prepend the nonce to the payload
// we need to do this as we need the same nonce

1
tunnel/default.go
View File

@ -131,6 +131,7 @@ func (t *tun) newSession(channel, sessionId string) (*session, bool) {
recv: make(chan *message, 128),
send: t.send,
errChan: make(chan error, 1),
key: t.token + channel + sessionId,
}
// save session

2
tunnel/listener.go
View File

@ -77,6 +77,8 @@ func (t *tunListener) process() {
// create a new session session
sess = &session{
// the session key
key: t.token + m.channel + sessionId,
// the id of the remote side
tunnel: m.tunnel,
// the channel

16
tunnel/session.go
View File

@ -47,6 +47,8 @@ type session struct {
link string
// the error response
errChan chan error
// key for session encryption
key string
}
// message is sent over the send channel
@ -326,22 +328,22 @@ func (s *session) Announce() error {
// Send is used to send a message
func (s *session) Send(m *transport.Message) error {
// encrypt the transport message payload
body, err := Encrypt(m.Body, s.token+s.channel+s.session)
body, err := Encrypt(m.Body, s.key)
if err != nil {
log.Debugf("failed to encrypt message body: %v", err)
return err
}
// make copy
// make copy, without rehash and realloc
data := &transport.Message{
Header: make(map[string]string),
Header: make(map[string]string, len(m.Header)),
Body: body,
}
// encrypt all the headers
for k, v := range m.Header {
// encrypt the transport message payload
val, err := Encrypt([]byte(v), s.token+s.channel+s.session)
val, err := Encrypt([]byte(v), s.key)
if err != nil {
log.Debugf("failed to encrypt message header %s: %v", k, err)
return err
@ -387,14 +389,14 @@ func (s *session) Recv(m *transport.Message) error {
default:
}
//log.Tracef("Received %+v from recv backlog", msg)
log.Tracef("Received %+v from recv backlog", msg)
key := s.token + s.channel + msg.session
// decrypt the received payload using the token
// we have to used msg.session because multicast has a shared
// session id of "multicast" in this session struct on
// the listener side
body, err := Decrypt(msg.data.Body, s.token+s.channel+msg.session)
body, err := Decrypt(msg.data.Body, key)
if err != nil {
log.Debugf("failed to decrypt message body: %v", err)
return err
@ -410,7 +412,7 @@ func (s *session) Recv(m *transport.Message) error {
return err
}
// encrypt the transport message payload
val, err := Decrypt([]byte(h), s.token+s.channel+msg.session)
val, err := Decrypt([]byte(h), key)
if err != nil {
log.Debugf("failed to decrypt message header %s: %v", k, err)
return err