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memory transport: fix race cond on channel close

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Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
This commit is contained in:
Василий Толстов 2019-07-11 01:21:03 +03:00
parent 382fbecd40
commit 29fa8de98e
1 changed files with 17 additions and 5 deletions
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22
transport/memory/memory.go
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@ -12,6 +12,10 @@ import (
"github.com/micro/go-micro/transport" "github.com/micro/go-micro/transport"
) )
var (
r = rand.New(rand.NewSource(time.Now().UnixNano()))
)
type memorySocket struct { type memorySocket struct {
recv chan *transport.Message recv chan *transport.Message
send chan *transport.Message send chan *transport.Message
@ -22,6 +26,7 @@ type memorySocket struct {
local string local string
remote string remote string
sync.RWMutex
} }
type memoryClient struct { type memoryClient struct {
@ -34,16 +39,18 @@ type memoryListener struct {
exit chan bool exit chan bool
conn chan *memorySocket conn chan *memorySocket
opts transport.ListenOptions opts transport.ListenOptions
sync.RWMutex
} }
type memoryTransport struct { type memoryTransport struct {
opts transport.Options opts transport.Options
sync.RWMutex
sync.Mutex
listeners map[string]*memoryListener listeners map[string]*memoryListener
} }
func (ms *memorySocket) Recv(m *transport.Message) error { func (ms *memorySocket) Recv(m *transport.Message) error {
ms.RLock()
defer ms.RUnlock()
select { select {
case <-ms.exit: case <-ms.exit:
return errors.New("connection closed") return errors.New("connection closed")
@ -64,6 +71,8 @@ func (ms *memorySocket) Remote() string {
} }
func (ms *memorySocket) Send(m *transport.Message) error { func (ms *memorySocket) Send(m *transport.Message) error {
ms.RLock()
defer ms.RUnlock()
select { select {
case <-ms.exit: case <-ms.exit:
return errors.New("connection closed") return errors.New("connection closed")
@ -75,6 +84,8 @@ func (ms *memorySocket) Send(m *transport.Message) error {
} }
func (ms *memorySocket) Close() error { func (ms *memorySocket) Close() error {
ms.RLock()
defer ms.RUnlock()
select { select {
case <-ms.exit: case <-ms.exit:
return nil return nil
@ -89,6 +100,8 @@ func (m *memoryListener) Addr() string {
} }
func (m *memoryListener) Close() error { func (m *memoryListener) Close() error {
m.Lock()
defer m.Unlock()
select { select {
case <-m.exit: case <-m.exit:
return nil return nil
@ -117,8 +130,8 @@ func (m *memoryListener) Accept(fn func(transport.Socket)) error {
} }
func (m *memoryTransport) Dial(addr string, opts ...transport.DialOption) (transport.Client, error) { func (m *memoryTransport) Dial(addr string, opts ...transport.DialOption) (transport.Client, error) {
m.Lock() m.RLock()
defer m.Unlock() defer m.RUnlock()
listener, ok := m.listeners[addr] listener, ok := m.listeners[addr]
if !ok { if !ok {
@ -165,7 +178,6 @@ func (m *memoryTransport) Listen(addr string, opts ...transport.ListenOption) (t
// if zero port then randomly assign one // if zero port then randomly assign one
if len(parts) > 1 && parts[len(parts)-1] == "0" { if len(parts) > 1 && parts[len(parts)-1] == "0" {
r := rand.New(rand.NewSource(time.Now().UnixNano()))
i := r.Intn(10000) i := r.Intn(10000)
// set addr with port // set addr with port
addr = fmt.Sprintf("%s:%d", parts[:len(parts)-1], 10000+i) addr = fmt.Sprintf("%s:%d", parts[:len(parts)-1], 10000+i)