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https://github.com/cwinfo/yggdrasil-go.git
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start migrating Conn to be an actor
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parent
cac3444d9a
commit
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@ -3,12 +3,12 @@ package yggdrasil
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import (
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"errors"
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"fmt"
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"sync"
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"sync/atomic"
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"time"
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"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
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"github.com/yggdrasil-network/yggdrasil-go/src/util"
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"github.com/Arceliar/phony"
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)
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// ConnError implements the net.Error interface
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@ -54,10 +54,10 @@ func (e *ConnError) Closed() bool {
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}
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type Conn struct {
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phony.Actor
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core *Core
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readDeadline atomic.Value // time.Time // TODO timer
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writeDeadline atomic.Value // time.Time // TODO timer
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mutex sync.RWMutex // protects the below
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readDeadline *time.Time
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writeDeadline *time.Time
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nodeID *crypto.NodeID
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nodeMask *crypto.NodeID
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session *sessionInfo
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@ -75,9 +75,9 @@ func newConn(core *Core, nodeID *crypto.NodeID, nodeMask *crypto.NodeID, session
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}
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func (c *Conn) String() string {
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c.mutex.RLock()
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defer c.mutex.RUnlock()
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return fmt.Sprintf("conn=%p", c)
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var s string
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<-c.SyncExec(func() { s = fmt.Sprintf("conn=%p", c) })
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return s
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}
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// This should never be called from the router goroutine, used in the dial functions
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@ -137,10 +137,10 @@ func (c *Conn) doSearch() {
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go c.core.router.doAdmin(routerWork)
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}
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func (c *Conn) getDeadlineCancellation(value *atomic.Value) (util.Cancellation, bool) {
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if deadline, ok := value.Load().(time.Time); ok {
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func (c *Conn) _getDeadlineCancellation(t *time.Time) (util.Cancellation, bool) {
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if t != nil {
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// A deadline is set, so return a Cancellation that uses it
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c := util.CancellationWithDeadline(c.session.cancel, deadline)
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c := util.CancellationWithDeadline(c.session.cancel, *t)
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return c, true
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} else {
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// No deadline was set, so just return the existinc cancellation and a dummy value
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@ -150,7 +150,9 @@ func (c *Conn) getDeadlineCancellation(value *atomic.Value) (util.Cancellation,
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// Used internally by Read, the caller is responsible for util.PutBytes when they're done.
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func (c *Conn) ReadNoCopy() ([]byte, error) {
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cancel, doCancel := c.getDeadlineCancellation(&c.readDeadline)
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var cancel util.Cancellation
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var doCancel bool
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<-c.SyncExec(func() { cancel, doCancel = c._getDeadlineCancellation(c.readDeadline) })
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if doCancel {
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defer cancel.Cancel(nil)
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}
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@ -210,7 +212,9 @@ func (c *Conn) WriteNoCopy(msg FlowKeyMessage) error {
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}
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c.session.doFunc(sessionFunc)
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if err == nil {
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cancel, doCancel := c.getDeadlineCancellation(&c.writeDeadline)
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var cancel util.Cancellation
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var doCancel bool
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<-c.SyncExec(func() { cancel, doCancel = c._getDeadlineCancellation(c.writeDeadline) })
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if doCancel {
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defer cancel.Cancel(nil)
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}
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@ -240,14 +244,14 @@ func (c *Conn) Write(b []byte) (int, error) {
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}
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func (c *Conn) Close() (err error) {
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c.mutex.Lock()
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defer c.mutex.Unlock()
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if c.session != nil {
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// Close the session, if it hasn't been closed already
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if e := c.session.cancel.Cancel(errors.New("connection closed")); e != nil {
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err = ConnError{errors.New("close failed, session already closed"), false, false, true, 0}
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<-c.SyncExec(func() {
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if c.session != nil {
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// Close the session, if it hasn't been closed already
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if e := c.session.cancel.Cancel(errors.New("connection closed")); e != nil {
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err = ConnError{errors.New("close failed, session already closed"), false, false, true, 0}
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}
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}
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}
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})
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return
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}
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@ -256,9 +260,9 @@ func (c *Conn) LocalAddr() crypto.NodeID {
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}
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func (c *Conn) RemoteAddr() crypto.NodeID {
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c.mutex.RLock()
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defer c.mutex.RUnlock()
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return *c.nodeID
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var n crypto.NodeID
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<-c.SyncExec(func() { n = *c.nodeID })
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return n
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}
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func (c *Conn) SetDeadline(t time.Time) error {
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@ -268,11 +272,11 @@ func (c *Conn) SetDeadline(t time.Time) error {
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}
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func (c *Conn) SetReadDeadline(t time.Time) error {
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c.readDeadline.Store(t)
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<-c.SyncExec(func() { c.readDeadline = &t })
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return nil
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}
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func (c *Conn) SetWriteDeadline(t time.Time) error {
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c.writeDeadline.Store(t)
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<-c.SyncExec(func() { c.writeDeadline = &t })
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return nil
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}
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