repo stringlengths 5 67 | path stringlengths 4 218 | func_name stringlengths 0 151 | original_string stringlengths 52 373k | language stringclasses 6 values | code stringlengths 52 373k | code_tokens listlengths 10 512 | docstring stringlengths 3 47.2k | docstring_tokens listlengths 3 234 | sha stringlengths 40 40 | url stringlengths 85 339 | partition stringclasses 3 values |
|---|---|---|---|---|---|---|---|---|---|---|---|
xtaci/kcp-go | sess.go | newUDPSession | func newUDPSession(conv uint32, dataShards, parityShards int, l *Listener, conn net.PacketConn, remote net.Addr, block BlockCrypt) *UDPSession {
sess := new(UDPSession)
sess.die = make(chan struct{})
sess.nonce = new(nonceAES128)
sess.nonce.Init()
sess.chReadEvent = make(chan struct{}, 1)
sess.chWriteEvent = make(chan struct{}, 1)
sess.chReadError = make(chan error, 1)
sess.chWriteError = make(chan error, 1)
sess.remote = remote
sess.conn = conn
sess.l = l
sess.block = block
sess.recvbuf = make([]byte, mtuLimit)
// FEC codec initialization
sess.fecDecoder = newFECDecoder(rxFECMulti*(dataShards+parityShards), dataShards, parityShards)
if sess.block != nil {
sess.fecEncoder = newFECEncoder(dataShards, parityShards, cryptHeaderSize)
} else {
sess.fecEncoder = newFECEncoder(dataShards, parityShards, 0)
}
// calculate additional header size introduced by FEC and encryption
if sess.block != nil {
sess.headerSize += cryptHeaderSize
}
if sess.fecEncoder != nil {
sess.headerSize += fecHeaderSizePlus2
}
sess.kcp = NewKCP(conv, func(buf []byte, size int) {
if size >= IKCP_OVERHEAD+sess.headerSize {
sess.output(buf[:size])
}
})
sess.kcp.ReserveBytes(sess.headerSize)
// register current session to the global updater,
// which call sess.update() periodically.
updater.addSession(sess)
if sess.l == nil { // it's a client connection
go sess.readLoop()
atomic.AddUint64(&DefaultSnmp.ActiveOpens, 1)
} else {
atomic.AddUint64(&DefaultSnmp.PassiveOpens, 1)
}
currestab := atomic.AddUint64(&DefaultSnmp.CurrEstab, 1)
maxconn := atomic.LoadUint64(&DefaultSnmp.MaxConn)
if currestab > maxconn {
atomic.CompareAndSwapUint64(&DefaultSnmp.MaxConn, maxconn, currestab)
}
return sess
} | go | func newUDPSession(conv uint32, dataShards, parityShards int, l *Listener, conn net.PacketConn, remote net.Addr, block BlockCrypt) *UDPSession {
sess := new(UDPSession)
sess.die = make(chan struct{})
sess.nonce = new(nonceAES128)
sess.nonce.Init()
sess.chReadEvent = make(chan struct{}, 1)
sess.chWriteEvent = make(chan struct{}, 1)
sess.chReadError = make(chan error, 1)
sess.chWriteError = make(chan error, 1)
sess.remote = remote
sess.conn = conn
sess.l = l
sess.block = block
sess.recvbuf = make([]byte, mtuLimit)
// FEC codec initialization
sess.fecDecoder = newFECDecoder(rxFECMulti*(dataShards+parityShards), dataShards, parityShards)
if sess.block != nil {
sess.fecEncoder = newFECEncoder(dataShards, parityShards, cryptHeaderSize)
} else {
sess.fecEncoder = newFECEncoder(dataShards, parityShards, 0)
}
// calculate additional header size introduced by FEC and encryption
if sess.block != nil {
sess.headerSize += cryptHeaderSize
}
if sess.fecEncoder != nil {
sess.headerSize += fecHeaderSizePlus2
}
sess.kcp = NewKCP(conv, func(buf []byte, size int) {
if size >= IKCP_OVERHEAD+sess.headerSize {
sess.output(buf[:size])
}
})
sess.kcp.ReserveBytes(sess.headerSize)
// register current session to the global updater,
// which call sess.update() periodically.
updater.addSession(sess)
if sess.l == nil { // it's a client connection
go sess.readLoop()
atomic.AddUint64(&DefaultSnmp.ActiveOpens, 1)
} else {
atomic.AddUint64(&DefaultSnmp.PassiveOpens, 1)
}
currestab := atomic.AddUint64(&DefaultSnmp.CurrEstab, 1)
maxconn := atomic.LoadUint64(&DefaultSnmp.MaxConn)
if currestab > maxconn {
atomic.CompareAndSwapUint64(&DefaultSnmp.MaxConn, maxconn, currestab)
}
return sess
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] | // newUDPSession create a new udp session for client or server | [
"newUDPSession",
"create",
"a",
"new",
"udp",
"session",
"for",
"client",
"or",
"server"
] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/sess.go#L113-L168 | train |
xtaci/kcp-go | sess.go | WriteBuffers | func (s *UDPSession) WriteBuffers(v [][]byte) (n int, err error) {
for {
s.mu.Lock()
if s.isClosed {
s.mu.Unlock()
return 0, errors.New(errBrokenPipe)
}
if s.kcp.WaitSnd() < int(s.kcp.snd_wnd) {
for _, b := range v {
n += len(b)
for {
if len(b) <= int(s.kcp.mss) {
s.kcp.Send(b)
break
} else {
s.kcp.Send(b[:s.kcp.mss])
b = b[s.kcp.mss:]
}
}
}
if s.kcp.WaitSnd() >= int(s.kcp.snd_wnd) || !s.writeDelay {
s.kcp.flush(false)
}
s.mu.Unlock()
atomic.AddUint64(&DefaultSnmp.BytesSent, uint64(n))
return n, nil
}
var timeout *time.Timer
var c <-chan time.Time
if !s.wd.IsZero() {
if time.Now().After(s.wd) {
s.mu.Unlock()
return 0, errTimeout{}
}
delay := s.wd.Sub(time.Now())
timeout = time.NewTimer(delay)
c = timeout.C
}
s.mu.Unlock()
select {
case <-s.chWriteEvent:
case <-c:
case <-s.die:
case err = <-s.chWriteError:
if timeout != nil {
timeout.Stop()
}
return n, err
}
if timeout != nil {
timeout.Stop()
}
}
} | go | func (s *UDPSession) WriteBuffers(v [][]byte) (n int, err error) {
for {
s.mu.Lock()
if s.isClosed {
s.mu.Unlock()
return 0, errors.New(errBrokenPipe)
}
if s.kcp.WaitSnd() < int(s.kcp.snd_wnd) {
for _, b := range v {
n += len(b)
for {
if len(b) <= int(s.kcp.mss) {
s.kcp.Send(b)
break
} else {
s.kcp.Send(b[:s.kcp.mss])
b = b[s.kcp.mss:]
}
}
}
if s.kcp.WaitSnd() >= int(s.kcp.snd_wnd) || !s.writeDelay {
s.kcp.flush(false)
}
s.mu.Unlock()
atomic.AddUint64(&DefaultSnmp.BytesSent, uint64(n))
return n, nil
}
var timeout *time.Timer
var c <-chan time.Time
if !s.wd.IsZero() {
if time.Now().After(s.wd) {
s.mu.Unlock()
return 0, errTimeout{}
}
delay := s.wd.Sub(time.Now())
timeout = time.NewTimer(delay)
c = timeout.C
}
s.mu.Unlock()
select {
case <-s.chWriteEvent:
case <-c:
case <-s.die:
case err = <-s.chWriteError:
if timeout != nil {
timeout.Stop()
}
return n, err
}
if timeout != nil {
timeout.Stop()
}
}
} | [
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"Stop",
"(",
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"}",
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"}",
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"}"
] | // WriteBuffers write a vector of byte slices to the underlying connection | [
"WriteBuffers",
"write",
"a",
"vector",
"of",
"byte",
"slices",
"to",
"the",
"underlying",
"connection"
] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/sess.go#L247-L305 | train |
xtaci/kcp-go | sess.go | SetWriteDelay | func (s *UDPSession) SetWriteDelay(delay bool) {
s.mu.Lock()
defer s.mu.Unlock()
s.writeDelay = delay
} | go | func (s *UDPSession) SetWriteDelay(delay bool) {
s.mu.Lock()
defer s.mu.Unlock()
s.writeDelay = delay
} | [
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"}"
] | // SetWriteDelay delays write for bulk transfer until the next update interval | [
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] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/sess.go#L365-L369 | train |
xtaci/kcp-go | sess.go | SetWindowSize | func (s *UDPSession) SetWindowSize(sndwnd, rcvwnd int) {
s.mu.Lock()
defer s.mu.Unlock()
s.kcp.WndSize(sndwnd, rcvwnd)
} | go | func (s *UDPSession) SetWindowSize(sndwnd, rcvwnd int) {
s.mu.Lock()
defer s.mu.Unlock()
s.kcp.WndSize(sndwnd, rcvwnd)
} | [
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"}"
] | // SetWindowSize set maximum window size | [
"SetWindowSize",
"set",
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"window",
"size"
] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/sess.go#L372-L376 | train |
xtaci/kcp-go | sess.go | SetACKNoDelay | func (s *UDPSession) SetACKNoDelay(nodelay bool) {
s.mu.Lock()
defer s.mu.Unlock()
s.ackNoDelay = nodelay
} | go | func (s *UDPSession) SetACKNoDelay(nodelay bool) {
s.mu.Lock()
defer s.mu.Unlock()
s.ackNoDelay = nodelay
} | [
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"}"
] | // SetACKNoDelay changes ack flush option, set true to flush ack immediately, | [
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"true",
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] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/sess.go#L402-L406 | train |
xtaci/kcp-go | sess.go | SetDUP | func (s *UDPSession) SetDUP(dup int) {
s.mu.Lock()
defer s.mu.Unlock()
s.dup = dup
} | go | func (s *UDPSession) SetDUP(dup int) {
s.mu.Lock()
defer s.mu.Unlock()
s.dup = dup
} | [
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"mu",
".",
"Unlock",
"(",
")",
"\n",
"s",
".",
"dup",
"=",
"dup",
"\n",
"}"
] | // SetDUP duplicates udp packets for kcp output, for testing purpose only | [
"SetDUP",
"duplicates",
"udp",
"packets",
"for",
"kcp",
"output",
"for",
"testing",
"purpose",
"only"
] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/sess.go#L409-L413 | train |
xtaci/kcp-go | sess.go | SetReadBuffer | func (s *UDPSession) SetReadBuffer(bytes int) error {
s.mu.Lock()
defer s.mu.Unlock()
if s.l == nil {
if nc, ok := s.conn.(setReadBuffer); ok {
return nc.SetReadBuffer(bytes)
}
}
return errors.New(errInvalidOperation)
} | go | func (s *UDPSession) SetReadBuffer(bytes int) error {
s.mu.Lock()
defer s.mu.Unlock()
if s.l == nil {
if nc, ok := s.conn.(setReadBuffer); ok {
return nc.SetReadBuffer(bytes)
}
}
return errors.New(errInvalidOperation)
} | [
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"return",
"errors",
".",
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"(",
"errInvalidOperation",
")",
"\n",
"}"
] | // SetReadBuffer sets the socket read buffer, no effect if it's accepted from Listener | [
"SetReadBuffer",
"sets",
"the",
"socket",
"read",
"buffer",
"no",
"effect",
"if",
"it",
"s",
"accepted",
"from",
"Listener"
] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/sess.go#L441-L450 | train |
xtaci/kcp-go | sess.go | update | func (s *UDPSession) update() (interval time.Duration) {
s.mu.Lock()
waitsnd := s.kcp.WaitSnd()
interval = time.Duration(s.kcp.flush(false)) * time.Millisecond
if s.kcp.WaitSnd() < waitsnd {
s.notifyWriteEvent()
}
s.mu.Unlock()
return
} | go | func (s *UDPSession) update() (interval time.Duration) {
s.mu.Lock()
waitsnd := s.kcp.WaitSnd()
interval = time.Duration(s.kcp.flush(false)) * time.Millisecond
if s.kcp.WaitSnd() < waitsnd {
s.notifyWriteEvent()
}
s.mu.Unlock()
return
} | [
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"}",
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"s",
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"mu",
".",
"Unlock",
"(",
")",
"\n",
"return",
"\n",
"}"
] | // kcp update, returns interval for next calling | [
"kcp",
"update",
"returns",
"interval",
"for",
"next",
"calling"
] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/sess.go#L518-L527 | train |
xtaci/kcp-go | sess.go | SetReadBuffer | func (l *Listener) SetReadBuffer(bytes int) error {
if nc, ok := l.conn.(setReadBuffer); ok {
return nc.SetReadBuffer(bytes)
}
return errors.New(errInvalidOperation)
} | go | func (l *Listener) SetReadBuffer(bytes int) error {
if nc, ok := l.conn.(setReadBuffer); ok {
return nc.SetReadBuffer(bytes)
}
return errors.New(errInvalidOperation)
} | [
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"}",
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] | // SetReadBuffer sets the socket read buffer for the Listener | [
"SetReadBuffer",
"sets",
"the",
"socket",
"read",
"buffer",
"for",
"the",
"Listener"
] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/sess.go#L733-L738 | train |
xtaci/kcp-go | sess.go | SetWriteBuffer | func (l *Listener) SetWriteBuffer(bytes int) error {
if nc, ok := l.conn.(setWriteBuffer); ok {
return nc.SetWriteBuffer(bytes)
}
return errors.New(errInvalidOperation)
} | go | func (l *Listener) SetWriteBuffer(bytes int) error {
if nc, ok := l.conn.(setWriteBuffer); ok {
return nc.SetWriteBuffer(bytes)
}
return errors.New(errInvalidOperation)
} | [
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"}",
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")",
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"}"
] | // SetWriteBuffer sets the socket write buffer for the Listener | [
"SetWriteBuffer",
"sets",
"the",
"socket",
"write",
"buffer",
"for",
"the",
"Listener"
] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/sess.go#L741-L746 | train |
xtaci/kcp-go | sess.go | SetDSCP | func (l *Listener) SetDSCP(dscp int) error {
if nc, ok := l.conn.(net.Conn); ok {
addr, _ := net.ResolveUDPAddr("udp", nc.LocalAddr().String())
if addr.IP.To4() != nil {
return ipv4.NewConn(nc).SetTOS(dscp << 2)
} else {
return ipv6.NewConn(nc).SetTrafficClass(dscp)
}
}
return errors.New(errInvalidOperation)
} | go | func (l *Listener) SetDSCP(dscp int) error {
if nc, ok := l.conn.(net.Conn); ok {
addr, _ := net.ResolveUDPAddr("udp", nc.LocalAddr().String())
if addr.IP.To4() != nil {
return ipv4.NewConn(nc).SetTOS(dscp << 2)
} else {
return ipv6.NewConn(nc).SetTrafficClass(dscp)
}
}
return errors.New(errInvalidOperation)
} | [
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"}"
] | // SetDSCP sets the 6bit DSCP field of IP header | [
"SetDSCP",
"sets",
"the",
"6bit",
"DSCP",
"field",
"of",
"IP",
"header"
] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/sess.go#L749-L759 | train |
xtaci/kcp-go | sess.go | AcceptKCP | func (l *Listener) AcceptKCP() (*UDPSession, error) {
var timeout <-chan time.Time
if tdeadline, ok := l.rd.Load().(time.Time); ok && !tdeadline.IsZero() {
timeout = time.After(tdeadline.Sub(time.Now()))
}
select {
case <-timeout:
return nil, &errTimeout{}
case c := <-l.chAccepts:
return c, nil
case <-l.die:
return nil, errors.New(errBrokenPipe)
}
} | go | func (l *Listener) AcceptKCP() (*UDPSession, error) {
var timeout <-chan time.Time
if tdeadline, ok := l.rd.Load().(time.Time); ok && !tdeadline.IsZero() {
timeout = time.After(tdeadline.Sub(time.Now()))
}
select {
case <-timeout:
return nil, &errTimeout{}
case c := <-l.chAccepts:
return c, nil
case <-l.die:
return nil, errors.New(errBrokenPipe)
}
} | [
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"}",
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"}"
] | // AcceptKCP accepts a KCP connection | [
"AcceptKCP",
"accepts",
"a",
"KCP",
"connection"
] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/sess.go#L767-L781 | train |
xtaci/kcp-go | sess.go | Close | func (l *Listener) Close() error {
close(l.die)
return l.conn.Close()
} | go | func (l *Listener) Close() error {
close(l.die)
return l.conn.Close()
} | [
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"l",
"*",
"Listener",
")",
"Close",
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")",
"error",
"{",
"close",
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"l",
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"die",
")",
"\n",
"return",
"l",
".",
"conn",
".",
"Close",
"(",
")",
"\n",
"}"
] | // Close stops listening on the UDP address. Already Accepted connections are not closed. | [
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"listening",
"on",
"the",
"UDP",
"address",
".",
"Already",
"Accepted",
"connections",
"are",
"not",
"closed",
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] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/sess.go#L803-L806 | train |
xtaci/kcp-go | sess.go | closeSession | func (l *Listener) closeSession(remote net.Addr) (ret bool) {
l.sessionLock.Lock()
defer l.sessionLock.Unlock()
if _, ok := l.sessions[remote.String()]; ok {
delete(l.sessions, remote.String())
return true
}
return false
} | go | func (l *Listener) closeSession(remote net.Addr) (ret bool) {
l.sessionLock.Lock()
defer l.sessionLock.Unlock()
if _, ok := l.sessions[remote.String()]; ok {
delete(l.sessions, remote.String())
return true
}
return false
} | [
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] | // closeSession notify the listener that a session has closed | [
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"the",
"listener",
"that",
"a",
"session",
"has",
"closed"
] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/sess.go#L809-L817 | train |
xtaci/kcp-go | sess.go | ListenWithOptions | func ListenWithOptions(laddr string, block BlockCrypt, dataShards, parityShards int) (*Listener, error) {
udpaddr, err := net.ResolveUDPAddr("udp", laddr)
if err != nil {
return nil, errors.Wrap(err, "net.ResolveUDPAddr")
}
conn, err := net.ListenUDP("udp", udpaddr)
if err != nil {
return nil, errors.Wrap(err, "net.ListenUDP")
}
return ServeConn(block, dataShards, parityShards, conn)
} | go | func ListenWithOptions(laddr string, block BlockCrypt, dataShards, parityShards int) (*Listener, error) {
udpaddr, err := net.ResolveUDPAddr("udp", laddr)
if err != nil {
return nil, errors.Wrap(err, "net.ResolveUDPAddr")
}
conn, err := net.ListenUDP("udp", udpaddr)
if err != nil {
return nil, errors.Wrap(err, "net.ListenUDP")
}
return ServeConn(block, dataShards, parityShards, conn)
} | [
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] | // ListenWithOptions listens for incoming KCP packets addressed to the local address laddr on the network "udp" with packet encryption,
// dataShards, parityShards defines Reed-Solomon Erasure Coding parameters | [
"ListenWithOptions",
"listens",
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] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/sess.go#L827-L838 | train |
xtaci/kcp-go | sess.go | ServeConn | func ServeConn(block BlockCrypt, dataShards, parityShards int, conn net.PacketConn) (*Listener, error) {
l := new(Listener)
l.conn = conn
l.sessions = make(map[string]*UDPSession)
l.chAccepts = make(chan *UDPSession, acceptBacklog)
l.chSessionClosed = make(chan net.Addr)
l.die = make(chan struct{})
l.dataShards = dataShards
l.parityShards = parityShards
l.block = block
l.fecDecoder = newFECDecoder(rxFECMulti*(dataShards+parityShards), dataShards, parityShards)
// calculate header size
if l.block != nil {
l.headerSize += cryptHeaderSize
}
if l.fecDecoder != nil {
l.headerSize += fecHeaderSizePlus2
}
go l.monitor()
return l, nil
} | go | func ServeConn(block BlockCrypt, dataShards, parityShards int, conn net.PacketConn) (*Listener, error) {
l := new(Listener)
l.conn = conn
l.sessions = make(map[string]*UDPSession)
l.chAccepts = make(chan *UDPSession, acceptBacklog)
l.chSessionClosed = make(chan net.Addr)
l.die = make(chan struct{})
l.dataShards = dataShards
l.parityShards = parityShards
l.block = block
l.fecDecoder = newFECDecoder(rxFECMulti*(dataShards+parityShards), dataShards, parityShards)
// calculate header size
if l.block != nil {
l.headerSize += cryptHeaderSize
}
if l.fecDecoder != nil {
l.headerSize += fecHeaderSizePlus2
}
go l.monitor()
return l, nil
} | [
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] | // ServeConn serves KCP protocol for a single packet connection. | [
"ServeConn",
"serves",
"KCP",
"protocol",
"for",
"a",
"single",
"packet",
"connection",
"."
] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/sess.go#L841-L863 | train |
xtaci/kcp-go | sess.go | DialWithOptions | func DialWithOptions(raddr string, block BlockCrypt, dataShards, parityShards int) (*UDPSession, error) {
// network type detection
udpaddr, err := net.ResolveUDPAddr("udp", raddr)
if err != nil {
return nil, errors.Wrap(err, "net.ResolveUDPAddr")
}
network := "udp4"
if udpaddr.IP.To4() == nil {
network = "udp"
}
conn, err := net.ListenUDP(network, nil)
if err != nil {
return nil, errors.Wrap(err, "net.DialUDP")
}
return NewConn(raddr, block, dataShards, parityShards, conn)
} | go | func DialWithOptions(raddr string, block BlockCrypt, dataShards, parityShards int) (*UDPSession, error) {
// network type detection
udpaddr, err := net.ResolveUDPAddr("udp", raddr)
if err != nil {
return nil, errors.Wrap(err, "net.ResolveUDPAddr")
}
network := "udp4"
if udpaddr.IP.To4() == nil {
network = "udp"
}
conn, err := net.ListenUDP(network, nil)
if err != nil {
return nil, errors.Wrap(err, "net.DialUDP")
}
return NewConn(raddr, block, dataShards, parityShards, conn)
} | [
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] | // DialWithOptions connects to the remote address "raddr" on the network "udp" with packet encryption | [
"DialWithOptions",
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"raddr",
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"the",
"network",
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"with",
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] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/sess.go#L869-L886 | train |
xtaci/kcp-go | sess.go | NewConn | func NewConn(raddr string, block BlockCrypt, dataShards, parityShards int, conn net.PacketConn) (*UDPSession, error) {
udpaddr, err := net.ResolveUDPAddr("udp", raddr)
if err != nil {
return nil, errors.Wrap(err, "net.ResolveUDPAddr")
}
var convid uint32
binary.Read(rand.Reader, binary.LittleEndian, &convid)
return newUDPSession(convid, dataShards, parityShards, nil, conn, udpaddr, block), nil
} | go | func NewConn(raddr string, block BlockCrypt, dataShards, parityShards int, conn net.PacketConn) (*UDPSession, error) {
udpaddr, err := net.ResolveUDPAddr("udp", raddr)
if err != nil {
return nil, errors.Wrap(err, "net.ResolveUDPAddr")
}
var convid uint32
binary.Read(rand.Reader, binary.LittleEndian, &convid)
return newUDPSession(convid, dataShards, parityShards, nil, conn, udpaddr, block), nil
} | [
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] | // NewConn establishes a session and talks KCP protocol over a packet connection. | [
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"and",
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"KCP",
"protocol",
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] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/sess.go#L889-L898 | train |
xtaci/kcp-go | snmp.go | ToSlice | func (s *Snmp) ToSlice() []string {
snmp := s.Copy()
return []string{
fmt.Sprint(snmp.BytesSent),
fmt.Sprint(snmp.BytesReceived),
fmt.Sprint(snmp.MaxConn),
fmt.Sprint(snmp.ActiveOpens),
fmt.Sprint(snmp.PassiveOpens),
fmt.Sprint(snmp.CurrEstab),
fmt.Sprint(snmp.InErrs),
fmt.Sprint(snmp.InCsumErrors),
fmt.Sprint(snmp.KCPInErrors),
fmt.Sprint(snmp.InPkts),
fmt.Sprint(snmp.OutPkts),
fmt.Sprint(snmp.InSegs),
fmt.Sprint(snmp.OutSegs),
fmt.Sprint(snmp.InBytes),
fmt.Sprint(snmp.OutBytes),
fmt.Sprint(snmp.RetransSegs),
fmt.Sprint(snmp.FastRetransSegs),
fmt.Sprint(snmp.EarlyRetransSegs),
fmt.Sprint(snmp.LostSegs),
fmt.Sprint(snmp.RepeatSegs),
fmt.Sprint(snmp.FECParityShards),
fmt.Sprint(snmp.FECErrs),
fmt.Sprint(snmp.FECRecovered),
fmt.Sprint(snmp.FECShortShards),
}
} | go | func (s *Snmp) ToSlice() []string {
snmp := s.Copy()
return []string{
fmt.Sprint(snmp.BytesSent),
fmt.Sprint(snmp.BytesReceived),
fmt.Sprint(snmp.MaxConn),
fmt.Sprint(snmp.ActiveOpens),
fmt.Sprint(snmp.PassiveOpens),
fmt.Sprint(snmp.CurrEstab),
fmt.Sprint(snmp.InErrs),
fmt.Sprint(snmp.InCsumErrors),
fmt.Sprint(snmp.KCPInErrors),
fmt.Sprint(snmp.InPkts),
fmt.Sprint(snmp.OutPkts),
fmt.Sprint(snmp.InSegs),
fmt.Sprint(snmp.OutSegs),
fmt.Sprint(snmp.InBytes),
fmt.Sprint(snmp.OutBytes),
fmt.Sprint(snmp.RetransSegs),
fmt.Sprint(snmp.FastRetransSegs),
fmt.Sprint(snmp.EarlyRetransSegs),
fmt.Sprint(snmp.LostSegs),
fmt.Sprint(snmp.RepeatSegs),
fmt.Sprint(snmp.FECParityShards),
fmt.Sprint(snmp.FECErrs),
fmt.Sprint(snmp.FECRecovered),
fmt.Sprint(snmp.FECShortShards),
}
} | [
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"Sprint",
"(",
"snmp",
".",
"FECShortShards",
")",
",",
"}",
"\n",
"}"
] | // ToSlice returns current snmp info as slice | [
"ToSlice",
"returns",
"current",
"snmp",
"info",
"as",
"slice"
] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/snmp.go#L71-L99 | train |
xtaci/kcp-go | snmp.go | Copy | func (s *Snmp) Copy() *Snmp {
d := newSnmp()
d.BytesSent = atomic.LoadUint64(&s.BytesSent)
d.BytesReceived = atomic.LoadUint64(&s.BytesReceived)
d.MaxConn = atomic.LoadUint64(&s.MaxConn)
d.ActiveOpens = atomic.LoadUint64(&s.ActiveOpens)
d.PassiveOpens = atomic.LoadUint64(&s.PassiveOpens)
d.CurrEstab = atomic.LoadUint64(&s.CurrEstab)
d.InErrs = atomic.LoadUint64(&s.InErrs)
d.InCsumErrors = atomic.LoadUint64(&s.InCsumErrors)
d.KCPInErrors = atomic.LoadUint64(&s.KCPInErrors)
d.InPkts = atomic.LoadUint64(&s.InPkts)
d.OutPkts = atomic.LoadUint64(&s.OutPkts)
d.InSegs = atomic.LoadUint64(&s.InSegs)
d.OutSegs = atomic.LoadUint64(&s.OutSegs)
d.InBytes = atomic.LoadUint64(&s.InBytes)
d.OutBytes = atomic.LoadUint64(&s.OutBytes)
d.RetransSegs = atomic.LoadUint64(&s.RetransSegs)
d.FastRetransSegs = atomic.LoadUint64(&s.FastRetransSegs)
d.EarlyRetransSegs = atomic.LoadUint64(&s.EarlyRetransSegs)
d.LostSegs = atomic.LoadUint64(&s.LostSegs)
d.RepeatSegs = atomic.LoadUint64(&s.RepeatSegs)
d.FECParityShards = atomic.LoadUint64(&s.FECParityShards)
d.FECErrs = atomic.LoadUint64(&s.FECErrs)
d.FECRecovered = atomic.LoadUint64(&s.FECRecovered)
d.FECShortShards = atomic.LoadUint64(&s.FECShortShards)
return d
} | go | func (s *Snmp) Copy() *Snmp {
d := newSnmp()
d.BytesSent = atomic.LoadUint64(&s.BytesSent)
d.BytesReceived = atomic.LoadUint64(&s.BytesReceived)
d.MaxConn = atomic.LoadUint64(&s.MaxConn)
d.ActiveOpens = atomic.LoadUint64(&s.ActiveOpens)
d.PassiveOpens = atomic.LoadUint64(&s.PassiveOpens)
d.CurrEstab = atomic.LoadUint64(&s.CurrEstab)
d.InErrs = atomic.LoadUint64(&s.InErrs)
d.InCsumErrors = atomic.LoadUint64(&s.InCsumErrors)
d.KCPInErrors = atomic.LoadUint64(&s.KCPInErrors)
d.InPkts = atomic.LoadUint64(&s.InPkts)
d.OutPkts = atomic.LoadUint64(&s.OutPkts)
d.InSegs = atomic.LoadUint64(&s.InSegs)
d.OutSegs = atomic.LoadUint64(&s.OutSegs)
d.InBytes = atomic.LoadUint64(&s.InBytes)
d.OutBytes = atomic.LoadUint64(&s.OutBytes)
d.RetransSegs = atomic.LoadUint64(&s.RetransSegs)
d.FastRetransSegs = atomic.LoadUint64(&s.FastRetransSegs)
d.EarlyRetransSegs = atomic.LoadUint64(&s.EarlyRetransSegs)
d.LostSegs = atomic.LoadUint64(&s.LostSegs)
d.RepeatSegs = atomic.LoadUint64(&s.RepeatSegs)
d.FECParityShards = atomic.LoadUint64(&s.FECParityShards)
d.FECErrs = atomic.LoadUint64(&s.FECErrs)
d.FECRecovered = atomic.LoadUint64(&s.FECRecovered)
d.FECShortShards = atomic.LoadUint64(&s.FECShortShards)
return d
} | [
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] | // Copy make a copy of current snmp snapshot | [
"Copy",
"make",
"a",
"copy",
"of",
"current",
"snmp",
"snapshot"
] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/snmp.go#L102-L129 | train |
xtaci/kcp-go | snmp.go | Reset | func (s *Snmp) Reset() {
atomic.StoreUint64(&s.BytesSent, 0)
atomic.StoreUint64(&s.BytesReceived, 0)
atomic.StoreUint64(&s.MaxConn, 0)
atomic.StoreUint64(&s.ActiveOpens, 0)
atomic.StoreUint64(&s.PassiveOpens, 0)
atomic.StoreUint64(&s.CurrEstab, 0)
atomic.StoreUint64(&s.InErrs, 0)
atomic.StoreUint64(&s.InCsumErrors, 0)
atomic.StoreUint64(&s.KCPInErrors, 0)
atomic.StoreUint64(&s.InPkts, 0)
atomic.StoreUint64(&s.OutPkts, 0)
atomic.StoreUint64(&s.InSegs, 0)
atomic.StoreUint64(&s.OutSegs, 0)
atomic.StoreUint64(&s.InBytes, 0)
atomic.StoreUint64(&s.OutBytes, 0)
atomic.StoreUint64(&s.RetransSegs, 0)
atomic.StoreUint64(&s.FastRetransSegs, 0)
atomic.StoreUint64(&s.EarlyRetransSegs, 0)
atomic.StoreUint64(&s.LostSegs, 0)
atomic.StoreUint64(&s.RepeatSegs, 0)
atomic.StoreUint64(&s.FECParityShards, 0)
atomic.StoreUint64(&s.FECErrs, 0)
atomic.StoreUint64(&s.FECRecovered, 0)
atomic.StoreUint64(&s.FECShortShards, 0)
} | go | func (s *Snmp) Reset() {
atomic.StoreUint64(&s.BytesSent, 0)
atomic.StoreUint64(&s.BytesReceived, 0)
atomic.StoreUint64(&s.MaxConn, 0)
atomic.StoreUint64(&s.ActiveOpens, 0)
atomic.StoreUint64(&s.PassiveOpens, 0)
atomic.StoreUint64(&s.CurrEstab, 0)
atomic.StoreUint64(&s.InErrs, 0)
atomic.StoreUint64(&s.InCsumErrors, 0)
atomic.StoreUint64(&s.KCPInErrors, 0)
atomic.StoreUint64(&s.InPkts, 0)
atomic.StoreUint64(&s.OutPkts, 0)
atomic.StoreUint64(&s.InSegs, 0)
atomic.StoreUint64(&s.OutSegs, 0)
atomic.StoreUint64(&s.InBytes, 0)
atomic.StoreUint64(&s.OutBytes, 0)
atomic.StoreUint64(&s.RetransSegs, 0)
atomic.StoreUint64(&s.FastRetransSegs, 0)
atomic.StoreUint64(&s.EarlyRetransSegs, 0)
atomic.StoreUint64(&s.LostSegs, 0)
atomic.StoreUint64(&s.RepeatSegs, 0)
atomic.StoreUint64(&s.FECParityShards, 0)
atomic.StoreUint64(&s.FECErrs, 0)
atomic.StoreUint64(&s.FECRecovered, 0)
atomic.StoreUint64(&s.FECShortShards, 0)
} | [
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")",
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"}"
] | // Reset values to zero | [
"Reset",
"values",
"to",
"zero"
] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/snmp.go#L132-L157 | train |
xtaci/kcp-go | crypt.go | NewSimpleXORBlockCrypt | func NewSimpleXORBlockCrypt(key []byte) (BlockCrypt, error) {
c := new(simpleXORBlockCrypt)
c.xortbl = pbkdf2.Key(key, []byte(saltxor), 32, mtuLimit, sha1.New)
return c, nil
} | go | func NewSimpleXORBlockCrypt(key []byte) (BlockCrypt, error) {
c := new(simpleXORBlockCrypt)
c.xortbl = pbkdf2.Key(key, []byte(saltxor), 32, mtuLimit, sha1.New)
return c, nil
} | [
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] | // NewSimpleXORBlockCrypt simple xor with key expanding | [
"NewSimpleXORBlockCrypt",
"simple",
"xor",
"with",
"key",
"expanding"
] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/crypt.go#L224-L228 | train |
xtaci/kcp-go | crypt.go | encrypt | func encrypt(block cipher.Block, dst, src, buf []byte) {
switch block.BlockSize() {
case 8:
encrypt8(block, dst, src, buf)
case 16:
encrypt16(block, dst, src, buf)
default:
encryptVariant(block, dst, src, buf)
}
} | go | func encrypt(block cipher.Block, dst, src, buf []byte) {
switch block.BlockSize() {
case 8:
encrypt8(block, dst, src, buf)
case 16:
encrypt16(block, dst, src, buf)
default:
encryptVariant(block, dst, src, buf)
}
} | [
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"}",
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"}"
] | // packet encryption with local CFB mode | [
"packet",
"encryption",
"with",
"local",
"CFB",
"mode"
] | 88b8a1475ba14b58f41457c9c89b5ccd919f1c24 | https://github.com/xtaci/kcp-go/blob/88b8a1475ba14b58f41457c9c89b5ccd919f1c24/crypt.go#L244-L253 | train |
hashicorp/yamux | addr.go | LocalAddr | func (s *Session) LocalAddr() net.Addr {
addr, ok := s.conn.(hasAddr)
if !ok {
return &yamuxAddr{"local"}
}
return addr.LocalAddr()
} | go | func (s *Session) LocalAddr() net.Addr {
addr, ok := s.conn.(hasAddr)
if !ok {
return &yamuxAddr{"local"}
}
return addr.LocalAddr()
} | [
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"}"
] | // LocalAddr is used to get the local address of the
// underlying connection. | [
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/addr.go#L34-L40 | train |
hashicorp/yamux | stream.go | newStream | func newStream(session *Session, id uint32, state streamState) *Stream {
s := &Stream{
id: id,
session: session,
state: state,
controlHdr: header(make([]byte, headerSize)),
controlErr: make(chan error, 1),
sendHdr: header(make([]byte, headerSize)),
sendErr: make(chan error, 1),
recvWindow: initialStreamWindow,
sendWindow: initialStreamWindow,
recvNotifyCh: make(chan struct{}, 1),
sendNotifyCh: make(chan struct{}, 1),
}
s.readDeadline.Store(time.Time{})
s.writeDeadline.Store(time.Time{})
return s
} | go | func newStream(session *Session, id uint32, state streamState) *Stream {
s := &Stream{
id: id,
session: session,
state: state,
controlHdr: header(make([]byte, headerSize)),
controlErr: make(chan error, 1),
sendHdr: header(make([]byte, headerSize)),
sendErr: make(chan error, 1),
recvWindow: initialStreamWindow,
sendWindow: initialStreamWindow,
recvNotifyCh: make(chan struct{}, 1),
sendNotifyCh: make(chan struct{}, 1),
}
s.readDeadline.Store(time.Time{})
s.writeDeadline.Store(time.Time{})
return s
} | [
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] | // newStream is used to construct a new stream within
// a given session for an ID | [
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"stream",
"within",
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/stream.go#L56-L73 | train |
hashicorp/yamux | stream.go | Read | func (s *Stream) Read(b []byte) (n int, err error) {
defer asyncNotify(s.recvNotifyCh)
START:
s.stateLock.Lock()
switch s.state {
case streamLocalClose:
fallthrough
case streamRemoteClose:
fallthrough
case streamClosed:
s.recvLock.Lock()
if s.recvBuf == nil || s.recvBuf.Len() == 0 {
s.recvLock.Unlock()
s.stateLock.Unlock()
return 0, io.EOF
}
s.recvLock.Unlock()
case streamReset:
s.stateLock.Unlock()
return 0, ErrConnectionReset
}
s.stateLock.Unlock()
// If there is no data available, block
s.recvLock.Lock()
if s.recvBuf == nil || s.recvBuf.Len() == 0 {
s.recvLock.Unlock()
goto WAIT
}
// Read any bytes
n, _ = s.recvBuf.Read(b)
s.recvLock.Unlock()
// Send a window update potentially
err = s.sendWindowUpdate()
return n, err
WAIT:
var timeout <-chan time.Time
var timer *time.Timer
readDeadline := s.readDeadline.Load().(time.Time)
if !readDeadline.IsZero() {
delay := readDeadline.Sub(time.Now())
timer = time.NewTimer(delay)
timeout = timer.C
}
select {
case <-s.recvNotifyCh:
if timer != nil {
timer.Stop()
}
goto START
case <-timeout:
return 0, ErrTimeout
}
} | go | func (s *Stream) Read(b []byte) (n int, err error) {
defer asyncNotify(s.recvNotifyCh)
START:
s.stateLock.Lock()
switch s.state {
case streamLocalClose:
fallthrough
case streamRemoteClose:
fallthrough
case streamClosed:
s.recvLock.Lock()
if s.recvBuf == nil || s.recvBuf.Len() == 0 {
s.recvLock.Unlock()
s.stateLock.Unlock()
return 0, io.EOF
}
s.recvLock.Unlock()
case streamReset:
s.stateLock.Unlock()
return 0, ErrConnectionReset
}
s.stateLock.Unlock()
// If there is no data available, block
s.recvLock.Lock()
if s.recvBuf == nil || s.recvBuf.Len() == 0 {
s.recvLock.Unlock()
goto WAIT
}
// Read any bytes
n, _ = s.recvBuf.Read(b)
s.recvLock.Unlock()
// Send a window update potentially
err = s.sendWindowUpdate()
return n, err
WAIT:
var timeout <-chan time.Time
var timer *time.Timer
readDeadline := s.readDeadline.Load().(time.Time)
if !readDeadline.IsZero() {
delay := readDeadline.Sub(time.Now())
timer = time.NewTimer(delay)
timeout = timer.C
}
select {
case <-s.recvNotifyCh:
if timer != nil {
timer.Stop()
}
goto START
case <-timeout:
return 0, ErrTimeout
}
} | [
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":",
"return",
"0",
",",
"ErrTimeout",
"\n",
"}",
"\n",
"}"
] | // Read is used to read from the stream | [
"Read",
"is",
"used",
"to",
"read",
"from",
"the",
"stream"
] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/stream.go#L86-L142 | train |
hashicorp/yamux | stream.go | Write | func (s *Stream) Write(b []byte) (n int, err error) {
s.sendLock.Lock()
defer s.sendLock.Unlock()
total := 0
for total < len(b) {
n, err := s.write(b[total:])
total += n
if err != nil {
return total, err
}
}
return total, nil
} | go | func (s *Stream) Write(b []byte) (n int, err error) {
s.sendLock.Lock()
defer s.sendLock.Unlock()
total := 0
for total < len(b) {
n, err := s.write(b[total:])
total += n
if err != nil {
return total, err
}
}
return total, nil
} | [
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] | // Write is used to write to the stream | [
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"is",
"used",
"to",
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"to",
"the",
"stream"
] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/stream.go#L145-L157 | train |
hashicorp/yamux | stream.go | write | func (s *Stream) write(b []byte) (n int, err error) {
var flags uint16
var max uint32
var body io.Reader
START:
s.stateLock.Lock()
switch s.state {
case streamLocalClose:
fallthrough
case streamClosed:
s.stateLock.Unlock()
return 0, ErrStreamClosed
case streamReset:
s.stateLock.Unlock()
return 0, ErrConnectionReset
}
s.stateLock.Unlock()
// If there is no data available, block
window := atomic.LoadUint32(&s.sendWindow)
if window == 0 {
goto WAIT
}
// Determine the flags if any
flags = s.sendFlags()
// Send up to our send window
max = min(window, uint32(len(b)))
body = bytes.NewReader(b[:max])
// Send the header
s.sendHdr.encode(typeData, flags, s.id, max)
if err = s.session.waitForSendErr(s.sendHdr, body, s.sendErr); err != nil {
return 0, err
}
// Reduce our send window
atomic.AddUint32(&s.sendWindow, ^uint32(max-1))
// Unlock
return int(max), err
WAIT:
var timeout <-chan time.Time
writeDeadline := s.writeDeadline.Load().(time.Time)
if !writeDeadline.IsZero() {
delay := writeDeadline.Sub(time.Now())
timeout = time.After(delay)
}
select {
case <-s.sendNotifyCh:
goto START
case <-timeout:
return 0, ErrTimeout
}
return 0, nil
} | go | func (s *Stream) write(b []byte) (n int, err error) {
var flags uint16
var max uint32
var body io.Reader
START:
s.stateLock.Lock()
switch s.state {
case streamLocalClose:
fallthrough
case streamClosed:
s.stateLock.Unlock()
return 0, ErrStreamClosed
case streamReset:
s.stateLock.Unlock()
return 0, ErrConnectionReset
}
s.stateLock.Unlock()
// If there is no data available, block
window := atomic.LoadUint32(&s.sendWindow)
if window == 0 {
goto WAIT
}
// Determine the flags if any
flags = s.sendFlags()
// Send up to our send window
max = min(window, uint32(len(b)))
body = bytes.NewReader(b[:max])
// Send the header
s.sendHdr.encode(typeData, flags, s.id, max)
if err = s.session.waitForSendErr(s.sendHdr, body, s.sendErr); err != nil {
return 0, err
}
// Reduce our send window
atomic.AddUint32(&s.sendWindow, ^uint32(max-1))
// Unlock
return int(max), err
WAIT:
var timeout <-chan time.Time
writeDeadline := s.writeDeadline.Load().(time.Time)
if !writeDeadline.IsZero() {
delay := writeDeadline.Sub(time.Now())
timeout = time.After(delay)
}
select {
case <-s.sendNotifyCh:
goto START
case <-timeout:
return 0, ErrTimeout
}
return 0, nil
} | [
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"}",
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"}"
] | // write is used to write to the stream, may return on
// a short write. | [
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"is",
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"to",
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"to",
"the",
"stream",
"may",
"return",
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"a",
"short",
"write",
"."
] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/stream.go#L161-L218 | train |
hashicorp/yamux | stream.go | sendFlags | func (s *Stream) sendFlags() uint16 {
s.stateLock.Lock()
defer s.stateLock.Unlock()
var flags uint16
switch s.state {
case streamInit:
flags |= flagSYN
s.state = streamSYNSent
case streamSYNReceived:
flags |= flagACK
s.state = streamEstablished
}
return flags
} | go | func (s *Stream) sendFlags() uint16 {
s.stateLock.Lock()
defer s.stateLock.Unlock()
var flags uint16
switch s.state {
case streamInit:
flags |= flagSYN
s.state = streamSYNSent
case streamSYNReceived:
flags |= flagACK
s.state = streamEstablished
}
return flags
} | [
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] | // sendFlags determines any flags that are appropriate
// based on the current stream state | [
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"flags",
"that",
"are",
"appropriate",
"based",
"on",
"the",
"current",
"stream",
"state"
] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/stream.go#L222-L235 | train |
hashicorp/yamux | stream.go | sendWindowUpdate | func (s *Stream) sendWindowUpdate() error {
s.controlHdrLock.Lock()
defer s.controlHdrLock.Unlock()
// Determine the delta update
max := s.session.config.MaxStreamWindowSize
var bufLen uint32
s.recvLock.Lock()
if s.recvBuf != nil {
bufLen = uint32(s.recvBuf.Len())
}
delta := (max - bufLen) - s.recvWindow
// Determine the flags if any
flags := s.sendFlags()
// Check if we can omit the update
if delta < (max/2) && flags == 0 {
s.recvLock.Unlock()
return nil
}
// Update our window
s.recvWindow += delta
s.recvLock.Unlock()
// Send the header
s.controlHdr.encode(typeWindowUpdate, flags, s.id, delta)
if err := s.session.waitForSendErr(s.controlHdr, nil, s.controlErr); err != nil {
return err
}
return nil
} | go | func (s *Stream) sendWindowUpdate() error {
s.controlHdrLock.Lock()
defer s.controlHdrLock.Unlock()
// Determine the delta update
max := s.session.config.MaxStreamWindowSize
var bufLen uint32
s.recvLock.Lock()
if s.recvBuf != nil {
bufLen = uint32(s.recvBuf.Len())
}
delta := (max - bufLen) - s.recvWindow
// Determine the flags if any
flags := s.sendFlags()
// Check if we can omit the update
if delta < (max/2) && flags == 0 {
s.recvLock.Unlock()
return nil
}
// Update our window
s.recvWindow += delta
s.recvLock.Unlock()
// Send the header
s.controlHdr.encode(typeWindowUpdate, flags, s.id, delta)
if err := s.session.waitForSendErr(s.controlHdr, nil, s.controlErr); err != nil {
return err
}
return nil
} | [
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] | // sendWindowUpdate potentially sends a window update enabling
// further writes to take place. Must be invoked with the lock. | [
"sendWindowUpdate",
"potentially",
"sends",
"a",
"window",
"update",
"enabling",
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"to",
"take",
"place",
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"with",
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"lock",
"."
] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/stream.go#L239-L271 | train |
hashicorp/yamux | stream.go | sendClose | func (s *Stream) sendClose() error {
s.controlHdrLock.Lock()
defer s.controlHdrLock.Unlock()
flags := s.sendFlags()
flags |= flagFIN
s.controlHdr.encode(typeWindowUpdate, flags, s.id, 0)
if err := s.session.waitForSendErr(s.controlHdr, nil, s.controlErr); err != nil {
return err
}
return nil
} | go | func (s *Stream) sendClose() error {
s.controlHdrLock.Lock()
defer s.controlHdrLock.Unlock()
flags := s.sendFlags()
flags |= flagFIN
s.controlHdr.encode(typeWindowUpdate, flags, s.id, 0)
if err := s.session.waitForSendErr(s.controlHdr, nil, s.controlErr); err != nil {
return err
}
return nil
} | [
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] | // sendClose is used to send a FIN | [
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/stream.go#L274-L285 | train |
hashicorp/yamux | stream.go | Close | func (s *Stream) Close() error {
closeStream := false
s.stateLock.Lock()
switch s.state {
// Opened means we need to signal a close
case streamSYNSent:
fallthrough
case streamSYNReceived:
fallthrough
case streamEstablished:
s.state = streamLocalClose
goto SEND_CLOSE
case streamLocalClose:
case streamRemoteClose:
s.state = streamClosed
closeStream = true
goto SEND_CLOSE
case streamClosed:
case streamReset:
default:
panic("unhandled state")
}
s.stateLock.Unlock()
return nil
SEND_CLOSE:
s.stateLock.Unlock()
s.sendClose()
s.notifyWaiting()
if closeStream {
s.session.closeStream(s.id)
}
return nil
} | go | func (s *Stream) Close() error {
closeStream := false
s.stateLock.Lock()
switch s.state {
// Opened means we need to signal a close
case streamSYNSent:
fallthrough
case streamSYNReceived:
fallthrough
case streamEstablished:
s.state = streamLocalClose
goto SEND_CLOSE
case streamLocalClose:
case streamRemoteClose:
s.state = streamClosed
closeStream = true
goto SEND_CLOSE
case streamClosed:
case streamReset:
default:
panic("unhandled state")
}
s.stateLock.Unlock()
return nil
SEND_CLOSE:
s.stateLock.Unlock()
s.sendClose()
s.notifyWaiting()
if closeStream {
s.session.closeStream(s.id)
}
return nil
} | [
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] | // Close is used to close the stream | [
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"is",
"used",
"to",
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"the",
"stream"
] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/stream.go#L288-L322 | train |
hashicorp/yamux | stream.go | forceClose | func (s *Stream) forceClose() {
s.stateLock.Lock()
s.state = streamClosed
s.stateLock.Unlock()
s.notifyWaiting()
} | go | func (s *Stream) forceClose() {
s.stateLock.Lock()
s.state = streamClosed
s.stateLock.Unlock()
s.notifyWaiting()
} | [
"func",
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"}"
] | // forceClose is used for when the session is exiting | [
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"is",
"exiting"
] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/stream.go#L325-L330 | train |
hashicorp/yamux | stream.go | processFlags | func (s *Stream) processFlags(flags uint16) error {
// Close the stream without holding the state lock
closeStream := false
defer func() {
if closeStream {
s.session.closeStream(s.id)
}
}()
s.stateLock.Lock()
defer s.stateLock.Unlock()
if flags&flagACK == flagACK {
if s.state == streamSYNSent {
s.state = streamEstablished
}
s.session.establishStream(s.id)
}
if flags&flagFIN == flagFIN {
switch s.state {
case streamSYNSent:
fallthrough
case streamSYNReceived:
fallthrough
case streamEstablished:
s.state = streamRemoteClose
s.notifyWaiting()
case streamLocalClose:
s.state = streamClosed
closeStream = true
s.notifyWaiting()
default:
s.session.logger.Printf("[ERR] yamux: unexpected FIN flag in state %d", s.state)
return ErrUnexpectedFlag
}
}
if flags&flagRST == flagRST {
s.state = streamReset
closeStream = true
s.notifyWaiting()
}
return nil
} | go | func (s *Stream) processFlags(flags uint16) error {
// Close the stream without holding the state lock
closeStream := false
defer func() {
if closeStream {
s.session.closeStream(s.id)
}
}()
s.stateLock.Lock()
defer s.stateLock.Unlock()
if flags&flagACK == flagACK {
if s.state == streamSYNSent {
s.state = streamEstablished
}
s.session.establishStream(s.id)
}
if flags&flagFIN == flagFIN {
switch s.state {
case streamSYNSent:
fallthrough
case streamSYNReceived:
fallthrough
case streamEstablished:
s.state = streamRemoteClose
s.notifyWaiting()
case streamLocalClose:
s.state = streamClosed
closeStream = true
s.notifyWaiting()
default:
s.session.logger.Printf("[ERR] yamux: unexpected FIN flag in state %d", s.state)
return ErrUnexpectedFlag
}
}
if flags&flagRST == flagRST {
s.state = streamReset
closeStream = true
s.notifyWaiting()
}
return nil
} | [
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] | // processFlags is used to update the state of the stream
// based on set flags, if any. Lock must be held | [
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/stream.go#L334-L375 | train |
hashicorp/yamux | stream.go | incrSendWindow | func (s *Stream) incrSendWindow(hdr header, flags uint16) error {
if err := s.processFlags(flags); err != nil {
return err
}
// Increase window, unblock a sender
atomic.AddUint32(&s.sendWindow, hdr.Length())
asyncNotify(s.sendNotifyCh)
return nil
} | go | func (s *Stream) incrSendWindow(hdr header, flags uint16) error {
if err := s.processFlags(flags); err != nil {
return err
}
// Increase window, unblock a sender
atomic.AddUint32(&s.sendWindow, hdr.Length())
asyncNotify(s.sendNotifyCh)
return nil
} | [
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/stream.go#L384-L393 | train |
hashicorp/yamux | stream.go | readData | func (s *Stream) readData(hdr header, flags uint16, conn io.Reader) error {
if err := s.processFlags(flags); err != nil {
return err
}
// Check that our recv window is not exceeded
length := hdr.Length()
if length == 0 {
return nil
}
// Wrap in a limited reader
conn = &io.LimitedReader{R: conn, N: int64(length)}
// Copy into buffer
s.recvLock.Lock()
if length > s.recvWindow {
s.session.logger.Printf("[ERR] yamux: receive window exceeded (stream: %d, remain: %d, recv: %d)", s.id, s.recvWindow, length)
return ErrRecvWindowExceeded
}
if s.recvBuf == nil {
// Allocate the receive buffer just-in-time to fit the full data frame.
// This way we can read in the whole packet without further allocations.
s.recvBuf = bytes.NewBuffer(make([]byte, 0, length))
}
if _, err := io.Copy(s.recvBuf, conn); err != nil {
s.session.logger.Printf("[ERR] yamux: Failed to read stream data: %v", err)
s.recvLock.Unlock()
return err
}
// Decrement the receive window
s.recvWindow -= length
s.recvLock.Unlock()
// Unblock any readers
asyncNotify(s.recvNotifyCh)
return nil
} | go | func (s *Stream) readData(hdr header, flags uint16, conn io.Reader) error {
if err := s.processFlags(flags); err != nil {
return err
}
// Check that our recv window is not exceeded
length := hdr.Length()
if length == 0 {
return nil
}
// Wrap in a limited reader
conn = &io.LimitedReader{R: conn, N: int64(length)}
// Copy into buffer
s.recvLock.Lock()
if length > s.recvWindow {
s.session.logger.Printf("[ERR] yamux: receive window exceeded (stream: %d, remain: %d, recv: %d)", s.id, s.recvWindow, length)
return ErrRecvWindowExceeded
}
if s.recvBuf == nil {
// Allocate the receive buffer just-in-time to fit the full data frame.
// This way we can read in the whole packet without further allocations.
s.recvBuf = bytes.NewBuffer(make([]byte, 0, length))
}
if _, err := io.Copy(s.recvBuf, conn); err != nil {
s.session.logger.Printf("[ERR] yamux: Failed to read stream data: %v", err)
s.recvLock.Unlock()
return err
}
// Decrement the receive window
s.recvWindow -= length
s.recvLock.Unlock()
// Unblock any readers
asyncNotify(s.recvNotifyCh)
return nil
} | [
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] | // readData is used to handle a data frame | [
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"to",
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"data",
"frame"
] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/stream.go#L396-L436 | train |
hashicorp/yamux | stream.go | SetDeadline | func (s *Stream) SetDeadline(t time.Time) error {
if err := s.SetReadDeadline(t); err != nil {
return err
}
if err := s.SetWriteDeadline(t); err != nil {
return err
}
return nil
} | go | func (s *Stream) SetDeadline(t time.Time) error {
if err := s.SetReadDeadline(t); err != nil {
return err
}
if err := s.SetWriteDeadline(t); err != nil {
return err
}
return nil
} | [
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] | // SetDeadline sets the read and write deadlines | [
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/stream.go#L439-L447 | train |
hashicorp/yamux | stream.go | SetWriteDeadline | func (s *Stream) SetWriteDeadline(t time.Time) error {
s.writeDeadline.Store(t)
return nil
} | go | func (s *Stream) SetWriteDeadline(t time.Time) error {
s.writeDeadline.Store(t)
return nil
} | [
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] | // SetWriteDeadline sets the deadline for future Write calls | [
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/stream.go#L456-L459 | train |
hashicorp/yamux | stream.go | Shrink | func (s *Stream) Shrink() {
s.recvLock.Lock()
if s.recvBuf != nil && s.recvBuf.Len() == 0 {
s.recvBuf = nil
}
s.recvLock.Unlock()
} | go | func (s *Stream) Shrink() {
s.recvLock.Lock()
if s.recvBuf != nil && s.recvBuf.Len() == 0 {
s.recvBuf = nil
}
s.recvLock.Unlock()
} | [
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] | // Shrink is used to compact the amount of buffers utilized
// This is useful when using Yamux in a connection pool to reduce
// the idle memory utilization. | [
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/stream.go#L464-L470 | train |
hashicorp/yamux | mux.go | Server | func Server(conn io.ReadWriteCloser, config *Config) (*Session, error) {
if config == nil {
config = DefaultConfig()
}
if err := VerifyConfig(config); err != nil {
return nil, err
}
return newSession(config, conn, false), nil
} | go | func Server(conn io.ReadWriteCloser, config *Config) (*Session, error) {
if config == nil {
config = DefaultConfig()
}
if err := VerifyConfig(config); err != nil {
return nil, err
}
return newSession(config, conn, false), nil
} | [
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// There must be at most one server-side connection. If a nil config is
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hashicorp/yamux | mux.go | Client | func Client(conn io.ReadWriteCloser, config *Config) (*Session, error) {
if config == nil {
config = DefaultConfig()
}
if err := VerifyConfig(config); err != nil {
return nil, err
}
return newSession(config, conn, true), nil
} | go | func Client(conn io.ReadWriteCloser, config *Config) (*Session, error) {
if config == nil {
config = DefaultConfig()
}
if err := VerifyConfig(config); err != nil {
return nil, err
}
return newSession(config, conn, true), nil
} | [
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/mux.go#L89-L98 | train |
hashicorp/yamux | session.go | newSession | func newSession(config *Config, conn io.ReadWriteCloser, client bool) *Session {
logger := config.Logger
if logger == nil {
logger = log.New(config.LogOutput, "", log.LstdFlags)
}
s := &Session{
config: config,
logger: logger,
conn: conn,
bufRead: bufio.NewReader(conn),
pings: make(map[uint32]chan struct{}),
streams: make(map[uint32]*Stream),
inflight: make(map[uint32]struct{}),
synCh: make(chan struct{}, config.AcceptBacklog),
acceptCh: make(chan *Stream, config.AcceptBacklog),
sendCh: make(chan sendReady, 64),
recvDoneCh: make(chan struct{}),
shutdownCh: make(chan struct{}),
}
if client {
s.nextStreamID = 1
} else {
s.nextStreamID = 2
}
go s.recv()
go s.send()
if config.EnableKeepAlive {
go s.keepalive()
}
return s
} | go | func newSession(config *Config, conn io.ReadWriteCloser, client bool) *Session {
logger := config.Logger
if logger == nil {
logger = log.New(config.LogOutput, "", log.LstdFlags)
}
s := &Session{
config: config,
logger: logger,
conn: conn,
bufRead: bufio.NewReader(conn),
pings: make(map[uint32]chan struct{}),
streams: make(map[uint32]*Stream),
inflight: make(map[uint32]struct{}),
synCh: make(chan struct{}, config.AcceptBacklog),
acceptCh: make(chan *Stream, config.AcceptBacklog),
sendCh: make(chan sendReady, 64),
recvDoneCh: make(chan struct{}),
shutdownCh: make(chan struct{}),
}
if client {
s.nextStreamID = 1
} else {
s.nextStreamID = 2
}
go s.recv()
go s.send()
if config.EnableKeepAlive {
go s.keepalive()
}
return s
} | [
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] | // newSession is used to construct a new session | [
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"session"
] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L88-L119 | train |
hashicorp/yamux | session.go | NumStreams | func (s *Session) NumStreams() int {
s.streamLock.Lock()
num := len(s.streams)
s.streamLock.Unlock()
return num
} | go | func (s *Session) NumStreams() int {
s.streamLock.Lock()
num := len(s.streams)
s.streamLock.Unlock()
return num
} | [
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] | // NumStreams returns the number of currently open streams | [
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L138-L143 | train |
hashicorp/yamux | session.go | Open | func (s *Session) Open() (net.Conn, error) {
conn, err := s.OpenStream()
if err != nil {
return nil, err
}
return conn, nil
} | go | func (s *Session) Open() (net.Conn, error) {
conn, err := s.OpenStream()
if err != nil {
return nil, err
}
return conn, nil
} | [
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hashicorp/yamux | session.go | Accept | func (s *Session) Accept() (net.Conn, error) {
conn, err := s.AcceptStream()
if err != nil {
return nil, err
}
return conn, err
} | go | func (s *Session) Accept() (net.Conn, error) {
conn, err := s.AcceptStream()
if err != nil {
return nil, err
}
return conn, err
} | [
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// is ready to be accepted. | [
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L201-L207 | train |
hashicorp/yamux | session.go | Close | func (s *Session) Close() error {
s.shutdownLock.Lock()
defer s.shutdownLock.Unlock()
if s.shutdown {
return nil
}
s.shutdown = true
if s.shutdownErr == nil {
s.shutdownErr = ErrSessionShutdown
}
close(s.shutdownCh)
s.conn.Close()
<-s.recvDoneCh
s.streamLock.Lock()
defer s.streamLock.Unlock()
for _, stream := range s.streams {
stream.forceClose()
}
return nil
} | go | func (s *Session) Close() error {
s.shutdownLock.Lock()
defer s.shutdownLock.Unlock()
if s.shutdown {
return nil
}
s.shutdown = true
if s.shutdownErr == nil {
s.shutdownErr = ErrSessionShutdown
}
close(s.shutdownCh)
s.conn.Close()
<-s.recvDoneCh
s.streamLock.Lock()
defer s.streamLock.Unlock()
for _, stream := range s.streams {
stream.forceClose()
}
return nil
} | [
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] | // Close is used to close the session and all streams.
// Attempts to send a GoAway before closing the connection. | [
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L225-L246 | train |
hashicorp/yamux | session.go | exitErr | func (s *Session) exitErr(err error) {
s.shutdownLock.Lock()
if s.shutdownErr == nil {
s.shutdownErr = err
}
s.shutdownLock.Unlock()
s.Close()
} | go | func (s *Session) exitErr(err error) {
s.shutdownLock.Lock()
if s.shutdownErr == nil {
s.shutdownErr = err
}
s.shutdownLock.Unlock()
s.Close()
} | [
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L250-L257 | train |
hashicorp/yamux | session.go | GoAway | func (s *Session) GoAway() error {
return s.waitForSend(s.goAway(goAwayNormal), nil)
} | go | func (s *Session) GoAway() error {
return s.waitForSend(s.goAway(goAwayNormal), nil)
} | [
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] | // GoAway can be used to prevent accepting further
// connections. It does not close the underlying conn. | [
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L261-L263 | train |
hashicorp/yamux | session.go | goAway | func (s *Session) goAway(reason uint32) header {
atomic.SwapInt32(&s.localGoAway, 1)
hdr := header(make([]byte, headerSize))
hdr.encode(typeGoAway, 0, 0, reason)
return hdr
} | go | func (s *Session) goAway(reason uint32) header {
atomic.SwapInt32(&s.localGoAway, 1)
hdr := header(make([]byte, headerSize))
hdr.encode(typeGoAway, 0, 0, reason)
return hdr
} | [
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L266-L271 | train |
hashicorp/yamux | session.go | Ping | func (s *Session) Ping() (time.Duration, error) {
// Get a channel for the ping
ch := make(chan struct{})
// Get a new ping id, mark as pending
s.pingLock.Lock()
id := s.pingID
s.pingID++
s.pings[id] = ch
s.pingLock.Unlock()
// Send the ping request
hdr := header(make([]byte, headerSize))
hdr.encode(typePing, flagSYN, 0, id)
if err := s.waitForSend(hdr, nil); err != nil {
return 0, err
}
// Wait for a response
start := time.Now()
select {
case <-ch:
case <-time.After(s.config.ConnectionWriteTimeout):
s.pingLock.Lock()
delete(s.pings, id) // Ignore it if a response comes later.
s.pingLock.Unlock()
return 0, ErrTimeout
case <-s.shutdownCh:
return 0, ErrSessionShutdown
}
// Compute the RTT
return time.Now().Sub(start), nil
} | go | func (s *Session) Ping() (time.Duration, error) {
// Get a channel for the ping
ch := make(chan struct{})
// Get a new ping id, mark as pending
s.pingLock.Lock()
id := s.pingID
s.pingID++
s.pings[id] = ch
s.pingLock.Unlock()
// Send the ping request
hdr := header(make([]byte, headerSize))
hdr.encode(typePing, flagSYN, 0, id)
if err := s.waitForSend(hdr, nil); err != nil {
return 0, err
}
// Wait for a response
start := time.Now()
select {
case <-ch:
case <-time.After(s.config.ConnectionWriteTimeout):
s.pingLock.Lock()
delete(s.pings, id) // Ignore it if a response comes later.
s.pingLock.Unlock()
return 0, ErrTimeout
case <-s.shutdownCh:
return 0, ErrSessionShutdown
}
// Compute the RTT
return time.Now().Sub(start), nil
} | [
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"response",
"time"
] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L274-L307 | train |
hashicorp/yamux | session.go | keepalive | func (s *Session) keepalive() {
for {
select {
case <-time.After(s.config.KeepAliveInterval):
_, err := s.Ping()
if err != nil {
if err != ErrSessionShutdown {
s.logger.Printf("[ERR] yamux: keepalive failed: %v", err)
s.exitErr(ErrKeepAliveTimeout)
}
return
}
case <-s.shutdownCh:
return
}
}
} | go | func (s *Session) keepalive() {
for {
select {
case <-time.After(s.config.KeepAliveInterval):
_, err := s.Ping()
if err != nil {
if err != ErrSessionShutdown {
s.logger.Printf("[ERR] yamux: keepalive failed: %v", err)
s.exitErr(ErrKeepAliveTimeout)
}
return
}
case <-s.shutdownCh:
return
}
}
} | [
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] | // keepalive is a long running goroutine that periodically does
// a ping to keep the connection alive. | [
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L311-L327 | train |
hashicorp/yamux | session.go | waitForSend | func (s *Session) waitForSend(hdr header, body io.Reader) error {
errCh := make(chan error, 1)
return s.waitForSendErr(hdr, body, errCh)
} | go | func (s *Session) waitForSend(hdr header, body io.Reader) error {
errCh := make(chan error, 1)
return s.waitForSendErr(hdr, body, errCh)
} | [
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",",
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] | // waitForSendErr waits to send a header, checking for a potential shutdown | [
"waitForSendErr",
"waits",
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"send",
"a",
"header",
"checking",
"for",
"a",
"potential",
"shutdown"
] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L330-L333 | train |
hashicorp/yamux | session.go | waitForSendErr | func (s *Session) waitForSendErr(hdr header, body io.Reader, errCh chan error) error {
t := timerPool.Get()
timer := t.(*time.Timer)
timer.Reset(s.config.ConnectionWriteTimeout)
defer func() {
timer.Stop()
select {
case <-timer.C:
default:
}
timerPool.Put(t)
}()
ready := sendReady{Hdr: hdr, Body: body, Err: errCh}
select {
case s.sendCh <- ready:
case <-s.shutdownCh:
return ErrSessionShutdown
case <-timer.C:
return ErrConnectionWriteTimeout
}
select {
case err := <-errCh:
return err
case <-s.shutdownCh:
return ErrSessionShutdown
case <-timer.C:
return ErrConnectionWriteTimeout
}
} | go | func (s *Session) waitForSendErr(hdr header, body io.Reader, errCh chan error) error {
t := timerPool.Get()
timer := t.(*time.Timer)
timer.Reset(s.config.ConnectionWriteTimeout)
defer func() {
timer.Stop()
select {
case <-timer.C:
default:
}
timerPool.Put(t)
}()
ready := sendReady{Hdr: hdr, Body: body, Err: errCh}
select {
case s.sendCh <- ready:
case <-s.shutdownCh:
return ErrSessionShutdown
case <-timer.C:
return ErrConnectionWriteTimeout
}
select {
case err := <-errCh:
return err
case <-s.shutdownCh:
return ErrSessionShutdown
case <-timer.C:
return ErrConnectionWriteTimeout
}
} | [
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] | // waitForSendErr waits to send a header with optional data, checking for a
// potential shutdown. Since there's the expectation that sends can happen
// in a timely manner, we enforce the connection write timeout here. | [
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"."
] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L338-L368 | train |
hashicorp/yamux | session.go | sendNoWait | func (s *Session) sendNoWait(hdr header) error {
t := timerPool.Get()
timer := t.(*time.Timer)
timer.Reset(s.config.ConnectionWriteTimeout)
defer func() {
timer.Stop()
select {
case <-timer.C:
default:
}
timerPool.Put(t)
}()
select {
case s.sendCh <- sendReady{Hdr: hdr}:
return nil
case <-s.shutdownCh:
return ErrSessionShutdown
case <-timer.C:
return ErrConnectionWriteTimeout
}
} | go | func (s *Session) sendNoWait(hdr header) error {
t := timerPool.Get()
timer := t.(*time.Timer)
timer.Reset(s.config.ConnectionWriteTimeout)
defer func() {
timer.Stop()
select {
case <-timer.C:
default:
}
timerPool.Put(t)
}()
select {
case s.sendCh <- sendReady{Hdr: hdr}:
return nil
case <-s.shutdownCh:
return ErrSessionShutdown
case <-timer.C:
return ErrConnectionWriteTimeout
}
} | [
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"}",
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"}"
] | // sendNoWait does a send without waiting. Since there's the expectation that
// the send happens right here, we enforce the connection write timeout if we
// can't queue the header to be sent. | [
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"sent",
"."
] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L373-L394 | train |
hashicorp/yamux | session.go | send | func (s *Session) send() {
for {
select {
case ready := <-s.sendCh:
// Send a header if ready
if ready.Hdr != nil {
sent := 0
for sent < len(ready.Hdr) {
n, err := s.conn.Write(ready.Hdr[sent:])
if err != nil {
s.logger.Printf("[ERR] yamux: Failed to write header: %v", err)
asyncSendErr(ready.Err, err)
s.exitErr(err)
return
}
sent += n
}
}
// Send data from a body if given
if ready.Body != nil {
_, err := io.Copy(s.conn, ready.Body)
if err != nil {
s.logger.Printf("[ERR] yamux: Failed to write body: %v", err)
asyncSendErr(ready.Err, err)
s.exitErr(err)
return
}
}
// No error, successful send
asyncSendErr(ready.Err, nil)
case <-s.shutdownCh:
return
}
}
} | go | func (s *Session) send() {
for {
select {
case ready := <-s.sendCh:
// Send a header if ready
if ready.Hdr != nil {
sent := 0
for sent < len(ready.Hdr) {
n, err := s.conn.Write(ready.Hdr[sent:])
if err != nil {
s.logger.Printf("[ERR] yamux: Failed to write header: %v", err)
asyncSendErr(ready.Err, err)
s.exitErr(err)
return
}
sent += n
}
}
// Send data from a body if given
if ready.Body != nil {
_, err := io.Copy(s.conn, ready.Body)
if err != nil {
s.logger.Printf("[ERR] yamux: Failed to write body: %v", err)
asyncSendErr(ready.Err, err)
s.exitErr(err)
return
}
}
// No error, successful send
asyncSendErr(ready.Err, nil)
case <-s.shutdownCh:
return
}
}
} | [
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] | // send is a long running goroutine that sends data | [
"send",
"is",
"a",
"long",
"running",
"goroutine",
"that",
"sends",
"data"
] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L397-L433 | train |
hashicorp/yamux | session.go | recv | func (s *Session) recv() {
if err := s.recvLoop(); err != nil {
s.exitErr(err)
}
} | go | func (s *Session) recv() {
if err := s.recvLoop(); err != nil {
s.exitErr(err)
}
} | [
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"}",
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"}"
] | // recv is a long running goroutine that accepts new data | [
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L436-L440 | train |
hashicorp/yamux | session.go | recvLoop | func (s *Session) recvLoop() error {
defer close(s.recvDoneCh)
hdr := header(make([]byte, headerSize))
for {
// Read the header
if _, err := io.ReadFull(s.bufRead, hdr); err != nil {
if err != io.EOF && !strings.Contains(err.Error(), "closed") && !strings.Contains(err.Error(), "reset by peer") {
s.logger.Printf("[ERR] yamux: Failed to read header: %v", err)
}
return err
}
// Verify the version
if hdr.Version() != protoVersion {
s.logger.Printf("[ERR] yamux: Invalid protocol version: %d", hdr.Version())
return ErrInvalidVersion
}
mt := hdr.MsgType()
if mt < typeData || mt > typeGoAway {
return ErrInvalidMsgType
}
if err := handlers[mt](s, hdr); err != nil {
return err
}
}
} | go | func (s *Session) recvLoop() error {
defer close(s.recvDoneCh)
hdr := header(make([]byte, headerSize))
for {
// Read the header
if _, err := io.ReadFull(s.bufRead, hdr); err != nil {
if err != io.EOF && !strings.Contains(err.Error(), "closed") && !strings.Contains(err.Error(), "reset by peer") {
s.logger.Printf("[ERR] yamux: Failed to read header: %v", err)
}
return err
}
// Verify the version
if hdr.Version() != protoVersion {
s.logger.Printf("[ERR] yamux: Invalid protocol version: %d", hdr.Version())
return ErrInvalidVersion
}
mt := hdr.MsgType()
if mt < typeData || mt > typeGoAway {
return ErrInvalidMsgType
}
if err := handlers[mt](s, hdr); err != nil {
return err
}
}
} | [
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] | // recvLoop continues to receive data until a fatal error is encountered | [
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"until",
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"error",
"is",
"encountered"
] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L453-L480 | train |
hashicorp/yamux | session.go | handleStreamMessage | func (s *Session) handleStreamMessage(hdr header) error {
// Check for a new stream creation
id := hdr.StreamID()
flags := hdr.Flags()
if flags&flagSYN == flagSYN {
if err := s.incomingStream(id); err != nil {
return err
}
}
// Get the stream
s.streamLock.Lock()
stream := s.streams[id]
s.streamLock.Unlock()
// If we do not have a stream, likely we sent a RST
if stream == nil {
// Drain any data on the wire
if hdr.MsgType() == typeData && hdr.Length() > 0 {
s.logger.Printf("[WARN] yamux: Discarding data for stream: %d", id)
if _, err := io.CopyN(ioutil.Discard, s.bufRead, int64(hdr.Length())); err != nil {
s.logger.Printf("[ERR] yamux: Failed to discard data: %v", err)
return nil
}
} else {
s.logger.Printf("[WARN] yamux: frame for missing stream: %v", hdr)
}
return nil
}
// Check if this is a window update
if hdr.MsgType() == typeWindowUpdate {
if err := stream.incrSendWindow(hdr, flags); err != nil {
if sendErr := s.sendNoWait(s.goAway(goAwayProtoErr)); sendErr != nil {
s.logger.Printf("[WARN] yamux: failed to send go away: %v", sendErr)
}
return err
}
return nil
}
// Read the new data
if err := stream.readData(hdr, flags, s.bufRead); err != nil {
if sendErr := s.sendNoWait(s.goAway(goAwayProtoErr)); sendErr != nil {
s.logger.Printf("[WARN] yamux: failed to send go away: %v", sendErr)
}
return err
}
return nil
} | go | func (s *Session) handleStreamMessage(hdr header) error {
// Check for a new stream creation
id := hdr.StreamID()
flags := hdr.Flags()
if flags&flagSYN == flagSYN {
if err := s.incomingStream(id); err != nil {
return err
}
}
// Get the stream
s.streamLock.Lock()
stream := s.streams[id]
s.streamLock.Unlock()
// If we do not have a stream, likely we sent a RST
if stream == nil {
// Drain any data on the wire
if hdr.MsgType() == typeData && hdr.Length() > 0 {
s.logger.Printf("[WARN] yamux: Discarding data for stream: %d", id)
if _, err := io.CopyN(ioutil.Discard, s.bufRead, int64(hdr.Length())); err != nil {
s.logger.Printf("[ERR] yamux: Failed to discard data: %v", err)
return nil
}
} else {
s.logger.Printf("[WARN] yamux: frame for missing stream: %v", hdr)
}
return nil
}
// Check if this is a window update
if hdr.MsgType() == typeWindowUpdate {
if err := stream.incrSendWindow(hdr, flags); err != nil {
if sendErr := s.sendNoWait(s.goAway(goAwayProtoErr)); sendErr != nil {
s.logger.Printf("[WARN] yamux: failed to send go away: %v", sendErr)
}
return err
}
return nil
}
// Read the new data
if err := stream.readData(hdr, flags, s.bufRead); err != nil {
if sendErr := s.sendNoWait(s.goAway(goAwayProtoErr)); sendErr != nil {
s.logger.Printf("[WARN] yamux: failed to send go away: %v", sendErr)
}
return err
}
return nil
} | [
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] | // handleStreamMessage handles either a data or window update frame | [
"handleStreamMessage",
"handles",
"either",
"a",
"data",
"or",
"window",
"update",
"frame"
] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L483-L532 | train |
hashicorp/yamux | session.go | handlePing | func (s *Session) handlePing(hdr header) error {
flags := hdr.Flags()
pingID := hdr.Length()
// Check if this is a query, respond back in a separate context so we
// don't interfere with the receiving thread blocking for the write.
if flags&flagSYN == flagSYN {
go func() {
hdr := header(make([]byte, headerSize))
hdr.encode(typePing, flagACK, 0, pingID)
if err := s.sendNoWait(hdr); err != nil {
s.logger.Printf("[WARN] yamux: failed to send ping reply: %v", err)
}
}()
return nil
}
// Handle a response
s.pingLock.Lock()
ch := s.pings[pingID]
if ch != nil {
delete(s.pings, pingID)
close(ch)
}
s.pingLock.Unlock()
return nil
} | go | func (s *Session) handlePing(hdr header) error {
flags := hdr.Flags()
pingID := hdr.Length()
// Check if this is a query, respond back in a separate context so we
// don't interfere with the receiving thread blocking for the write.
if flags&flagSYN == flagSYN {
go func() {
hdr := header(make([]byte, headerSize))
hdr.encode(typePing, flagACK, 0, pingID)
if err := s.sendNoWait(hdr); err != nil {
s.logger.Printf("[WARN] yamux: failed to send ping reply: %v", err)
}
}()
return nil
}
// Handle a response
s.pingLock.Lock()
ch := s.pings[pingID]
if ch != nil {
delete(s.pings, pingID)
close(ch)
}
s.pingLock.Unlock()
return nil
} | [
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] | // handlePing is invokde for a typePing frame | [
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L535-L561 | train |
hashicorp/yamux | session.go | handleGoAway | func (s *Session) handleGoAway(hdr header) error {
code := hdr.Length()
switch code {
case goAwayNormal:
atomic.SwapInt32(&s.remoteGoAway, 1)
case goAwayProtoErr:
s.logger.Printf("[ERR] yamux: received protocol error go away")
return fmt.Errorf("yamux protocol error")
case goAwayInternalErr:
s.logger.Printf("[ERR] yamux: received internal error go away")
return fmt.Errorf("remote yamux internal error")
default:
s.logger.Printf("[ERR] yamux: received unexpected go away")
return fmt.Errorf("unexpected go away received")
}
return nil
} | go | func (s *Session) handleGoAway(hdr header) error {
code := hdr.Length()
switch code {
case goAwayNormal:
atomic.SwapInt32(&s.remoteGoAway, 1)
case goAwayProtoErr:
s.logger.Printf("[ERR] yamux: received protocol error go away")
return fmt.Errorf("yamux protocol error")
case goAwayInternalErr:
s.logger.Printf("[ERR] yamux: received internal error go away")
return fmt.Errorf("remote yamux internal error")
default:
s.logger.Printf("[ERR] yamux: received unexpected go away")
return fmt.Errorf("unexpected go away received")
}
return nil
} | [
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L564-L580 | train |
hashicorp/yamux | session.go | incomingStream | func (s *Session) incomingStream(id uint32) error {
// Reject immediately if we are doing a go away
if atomic.LoadInt32(&s.localGoAway) == 1 {
hdr := header(make([]byte, headerSize))
hdr.encode(typeWindowUpdate, flagRST, id, 0)
return s.sendNoWait(hdr)
}
// Allocate a new stream
stream := newStream(s, id, streamSYNReceived)
s.streamLock.Lock()
defer s.streamLock.Unlock()
// Check if stream already exists
if _, ok := s.streams[id]; ok {
s.logger.Printf("[ERR] yamux: duplicate stream declared")
if sendErr := s.sendNoWait(s.goAway(goAwayProtoErr)); sendErr != nil {
s.logger.Printf("[WARN] yamux: failed to send go away: %v", sendErr)
}
return ErrDuplicateStream
}
// Register the stream
s.streams[id] = stream
// Check if we've exceeded the backlog
select {
case s.acceptCh <- stream:
return nil
default:
// Backlog exceeded! RST the stream
s.logger.Printf("[WARN] yamux: backlog exceeded, forcing connection reset")
delete(s.streams, id)
stream.sendHdr.encode(typeWindowUpdate, flagRST, id, 0)
return s.sendNoWait(stream.sendHdr)
}
} | go | func (s *Session) incomingStream(id uint32) error {
// Reject immediately if we are doing a go away
if atomic.LoadInt32(&s.localGoAway) == 1 {
hdr := header(make([]byte, headerSize))
hdr.encode(typeWindowUpdate, flagRST, id, 0)
return s.sendNoWait(hdr)
}
// Allocate a new stream
stream := newStream(s, id, streamSYNReceived)
s.streamLock.Lock()
defer s.streamLock.Unlock()
// Check if stream already exists
if _, ok := s.streams[id]; ok {
s.logger.Printf("[ERR] yamux: duplicate stream declared")
if sendErr := s.sendNoWait(s.goAway(goAwayProtoErr)); sendErr != nil {
s.logger.Printf("[WARN] yamux: failed to send go away: %v", sendErr)
}
return ErrDuplicateStream
}
// Register the stream
s.streams[id] = stream
// Check if we've exceeded the backlog
select {
case s.acceptCh <- stream:
return nil
default:
// Backlog exceeded! RST the stream
s.logger.Printf("[WARN] yamux: backlog exceeded, forcing connection reset")
delete(s.streams, id)
stream.sendHdr.encode(typeWindowUpdate, flagRST, id, 0)
return s.sendNoWait(stream.sendHdr)
}
} | [
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] | // incomingStream is used to create a new incoming stream | [
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"used",
"to",
"create",
"a",
"new",
"incoming",
"stream"
] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L583-L620 | train |
hashicorp/yamux | session.go | closeStream | func (s *Session) closeStream(id uint32) {
s.streamLock.Lock()
if _, ok := s.inflight[id]; ok {
select {
case <-s.synCh:
default:
s.logger.Printf("[ERR] yamux: SYN tracking out of sync")
}
}
delete(s.streams, id)
s.streamLock.Unlock()
} | go | func (s *Session) closeStream(id uint32) {
s.streamLock.Lock()
if _, ok := s.inflight[id]; ok {
select {
case <-s.synCh:
default:
s.logger.Printf("[ERR] yamux: SYN tracking out of sync")
}
}
delete(s.streams, id)
s.streamLock.Unlock()
} | [
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] | // closeStream is used to close a stream once both sides have
// issued a close. If there was an in-flight SYN and the stream
// was not yet established, then this will give the credit back. | [
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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L625-L636 | train |
afex/hystrix-go | plugins/graphite_aggregator.go | InitializeGraphiteCollector | func InitializeGraphiteCollector(config *GraphiteCollectorConfig) {
go metrics.Graphite(metrics.DefaultRegistry, config.TickInterval, config.Prefix, config.GraphiteAddr)
} | go | func InitializeGraphiteCollector(config *GraphiteCollectorConfig) {
go metrics.Graphite(metrics.DefaultRegistry, config.TickInterval, config.Prefix, config.GraphiteAddr)
} | [
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afex/hystrix-go | hystrix/circuit.go | GetCircuit | func GetCircuit(name string) (*CircuitBreaker, bool, error) {
circuitBreakersMutex.RLock()
_, ok := circuitBreakers[name]
if !ok {
circuitBreakersMutex.RUnlock()
circuitBreakersMutex.Lock()
defer circuitBreakersMutex.Unlock()
// because we released the rlock before we obtained the exclusive lock,
// we need to double check that some other thread didn't beat us to
// creation.
if cb, ok := circuitBreakers[name]; ok {
return cb, false, nil
}
circuitBreakers[name] = newCircuitBreaker(name)
} else {
defer circuitBreakersMutex.RUnlock()
}
return circuitBreakers[name], !ok, nil
} | go | func GetCircuit(name string) (*CircuitBreaker, bool, error) {
circuitBreakersMutex.RLock()
_, ok := circuitBreakers[name]
if !ok {
circuitBreakersMutex.RUnlock()
circuitBreakersMutex.Lock()
defer circuitBreakersMutex.Unlock()
// because we released the rlock before we obtained the exclusive lock,
// we need to double check that some other thread didn't beat us to
// creation.
if cb, ok := circuitBreakers[name]; ok {
return cb, false, nil
}
circuitBreakers[name] = newCircuitBreaker(name)
} else {
defer circuitBreakersMutex.RUnlock()
}
return circuitBreakers[name], !ok, nil
} | [
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] | // GetCircuit returns the circuit for the given command and whether this call created it. | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/circuit.go#L34-L53 | train |
afex/hystrix-go | hystrix/circuit.go | Flush | func Flush() {
circuitBreakersMutex.Lock()
defer circuitBreakersMutex.Unlock()
for name, cb := range circuitBreakers {
cb.metrics.Reset()
cb.executorPool.Metrics.Reset()
delete(circuitBreakers, name)
}
} | go | func Flush() {
circuitBreakersMutex.Lock()
defer circuitBreakersMutex.Unlock()
for name, cb := range circuitBreakers {
cb.metrics.Reset()
cb.executorPool.Metrics.Reset()
delete(circuitBreakers, name)
}
} | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/circuit.go#L56-L65 | train |
afex/hystrix-go | hystrix/circuit.go | newCircuitBreaker | func newCircuitBreaker(name string) *CircuitBreaker {
c := &CircuitBreaker{}
c.Name = name
c.metrics = newMetricExchange(name)
c.executorPool = newExecutorPool(name)
c.mutex = &sync.RWMutex{}
return c
} | go | func newCircuitBreaker(name string) *CircuitBreaker {
c := &CircuitBreaker{}
c.Name = name
c.metrics = newMetricExchange(name)
c.executorPool = newExecutorPool(name)
c.mutex = &sync.RWMutex{}
return c
} | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/circuit.go#L68-L76 | train |
afex/hystrix-go | hystrix/circuit.go | toggleForceOpen | func (circuit *CircuitBreaker) toggleForceOpen(toggle bool) error {
circuit, _, err := GetCircuit(circuit.Name)
if err != nil {
return err
}
circuit.forceOpen = toggle
return nil
} | go | func (circuit *CircuitBreaker) toggleForceOpen(toggle bool) error {
circuit, _, err := GetCircuit(circuit.Name)
if err != nil {
return err
}
circuit.forceOpen = toggle
return nil
} | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/circuit.go#L80-L88 | train |
afex/hystrix-go | hystrix/circuit.go | IsOpen | func (circuit *CircuitBreaker) IsOpen() bool {
circuit.mutex.RLock()
o := circuit.forceOpen || circuit.open
circuit.mutex.RUnlock()
if o {
return true
}
if uint64(circuit.metrics.Requests().Sum(time.Now())) < getSettings(circuit.Name).RequestVolumeThreshold {
return false
}
if !circuit.metrics.IsHealthy(time.Now()) {
// too many failures, open the circuit
circuit.setOpen()
return true
}
return false
} | go | func (circuit *CircuitBreaker) IsOpen() bool {
circuit.mutex.RLock()
o := circuit.forceOpen || circuit.open
circuit.mutex.RUnlock()
if o {
return true
}
if uint64(circuit.metrics.Requests().Sum(time.Now())) < getSettings(circuit.Name).RequestVolumeThreshold {
return false
}
if !circuit.metrics.IsHealthy(time.Now()) {
// too many failures, open the circuit
circuit.setOpen()
return true
}
return false
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] | // IsOpen is called before any Command execution to check whether or
// not it should be attempted. An "open" circuit means it is disabled. | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/circuit.go#L92-L112 | train |
afex/hystrix-go | hystrix/circuit.go | ReportEvent | func (circuit *CircuitBreaker) ReportEvent(eventTypes []string, start time.Time, runDuration time.Duration) error {
if len(eventTypes) == 0 {
return fmt.Errorf("no event types sent for metrics")
}
circuit.mutex.RLock()
o := circuit.open
circuit.mutex.RUnlock()
if eventTypes[0] == "success" && o {
circuit.setClose()
}
var concurrencyInUse float64
if circuit.executorPool.Max > 0 {
concurrencyInUse = float64(circuit.executorPool.ActiveCount()) / float64(circuit.executorPool.Max)
}
select {
case circuit.metrics.Updates <- &commandExecution{
Types: eventTypes,
Start: start,
RunDuration: runDuration,
ConcurrencyInUse: concurrencyInUse,
}:
default:
return CircuitError{Message: fmt.Sprintf("metrics channel (%v) is at capacity", circuit.Name)}
}
return nil
} | go | func (circuit *CircuitBreaker) ReportEvent(eventTypes []string, start time.Time, runDuration time.Duration) error {
if len(eventTypes) == 0 {
return fmt.Errorf("no event types sent for metrics")
}
circuit.mutex.RLock()
o := circuit.open
circuit.mutex.RUnlock()
if eventTypes[0] == "success" && o {
circuit.setClose()
}
var concurrencyInUse float64
if circuit.executorPool.Max > 0 {
concurrencyInUse = float64(circuit.executorPool.ActiveCount()) / float64(circuit.executorPool.Max)
}
select {
case circuit.metrics.Updates <- &commandExecution{
Types: eventTypes,
Start: start,
RunDuration: runDuration,
ConcurrencyInUse: concurrencyInUse,
}:
default:
return CircuitError{Message: fmt.Sprintf("metrics channel (%v) is at capacity", circuit.Name)}
}
return nil
} | [
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] | // ReportEvent records command metrics for tracking recent error rates and exposing data to the dashboard. | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/circuit.go#L167-L196 | train |
afex/hystrix-go | hystrix/rolling/rolling.go | NewNumber | func NewNumber() *Number {
r := &Number{
Buckets: make(map[int64]*numberBucket),
Mutex: &sync.RWMutex{},
}
return r
} | go | func NewNumber() *Number {
r := &Number{
Buckets: make(map[int64]*numberBucket),
Mutex: &sync.RWMutex{},
}
return r
} | [
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] | // NewNumber initializes a RollingNumber struct. | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/rolling/rolling.go#L20-L26 | train |
afex/hystrix-go | hystrix/rolling/rolling.go | Increment | func (r *Number) Increment(i float64) {
if i == 0 {
return
}
r.Mutex.Lock()
defer r.Mutex.Unlock()
b := r.getCurrentBucket()
b.Value += i
r.removeOldBuckets()
} | go | func (r *Number) Increment(i float64) {
if i == 0 {
return
}
r.Mutex.Lock()
defer r.Mutex.Unlock()
b := r.getCurrentBucket()
b.Value += i
r.removeOldBuckets()
} | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/rolling/rolling.go#L53-L64 | train |
afex/hystrix-go | hystrix/rolling/rolling.go | UpdateMax | func (r *Number) UpdateMax(n float64) {
r.Mutex.Lock()
defer r.Mutex.Unlock()
b := r.getCurrentBucket()
if n > b.Value {
b.Value = n
}
r.removeOldBuckets()
} | go | func (r *Number) UpdateMax(n float64) {
r.Mutex.Lock()
defer r.Mutex.Unlock()
b := r.getCurrentBucket()
if n > b.Value {
b.Value = n
}
r.removeOldBuckets()
} | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/rolling/rolling.go#L67-L76 | train |
afex/hystrix-go | hystrix/rolling/rolling.go | Sum | func (r *Number) Sum(now time.Time) float64 {
sum := float64(0)
r.Mutex.RLock()
defer r.Mutex.RUnlock()
for timestamp, bucket := range r.Buckets {
// TODO: configurable rolling window
if timestamp >= now.Unix()-10 {
sum += bucket.Value
}
}
return sum
} | go | func (r *Number) Sum(now time.Time) float64 {
sum := float64(0)
r.Mutex.RLock()
defer r.Mutex.RUnlock()
for timestamp, bucket := range r.Buckets {
// TODO: configurable rolling window
if timestamp >= now.Unix()-10 {
sum += bucket.Value
}
}
return sum
} | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/rolling/rolling.go#L79-L93 | train |
afex/hystrix-go | hystrix/rolling/rolling.go | Max | func (r *Number) Max(now time.Time) float64 {
var max float64
r.Mutex.RLock()
defer r.Mutex.RUnlock()
for timestamp, bucket := range r.Buckets {
// TODO: configurable rolling window
if timestamp >= now.Unix()-10 {
if bucket.Value > max {
max = bucket.Value
}
}
}
return max
} | go | func (r *Number) Max(now time.Time) float64 {
var max float64
r.Mutex.RLock()
defer r.Mutex.RUnlock()
for timestamp, bucket := range r.Buckets {
// TODO: configurable rolling window
if timestamp >= now.Unix()-10 {
if bucket.Value > max {
max = bucket.Value
}
}
}
return max
} | [
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"."
] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/rolling/rolling.go#L96-L112 | train |
afex/hystrix-go | hystrix/hystrix.go | Go | func Go(name string, run runFunc, fallback fallbackFunc) chan error {
runC := func(ctx context.Context) error {
return run()
}
var fallbackC fallbackFuncC
if fallback != nil {
fallbackC = func(ctx context.Context, err error) error {
return fallback(err)
}
}
return GoC(context.Background(), name, runC, fallbackC)
} | go | func Go(name string, run runFunc, fallback fallbackFunc) chan error {
runC := func(ctx context.Context) error {
return run()
}
var fallbackC fallbackFuncC
if fallback != nil {
fallbackC = func(ctx context.Context, err error) error {
return fallback(err)
}
}
return GoC(context.Background(), name, runC, fallbackC)
} | [
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// If your function begins slowing down or failing repeatedly, we will block
// new calls to it for you to give the dependent service time to repair.
//
// Define a fallback function if you want to define some code to execute during outages. | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/hystrix.go#L55-L66 | train |
afex/hystrix-go | hystrix/hystrix.go | DoC | func DoC(ctx context.Context, name string, run runFuncC, fallback fallbackFuncC) error {
done := make(chan struct{}, 1)
r := func(ctx context.Context) error {
err := run(ctx)
if err != nil {
return err
}
done <- struct{}{}
return nil
}
f := func(ctx context.Context, e error) error {
err := fallback(ctx, e)
if err != nil {
return err
}
done <- struct{}{}
return nil
}
var errChan chan error
if fallback == nil {
errChan = GoC(ctx, name, r, nil)
} else {
errChan = GoC(ctx, name, r, f)
}
select {
case <-done:
return nil
case err := <-errChan:
return err
}
} | go | func DoC(ctx context.Context, name string, run runFuncC, fallback fallbackFuncC) error {
done := make(chan struct{}, 1)
r := func(ctx context.Context) error {
err := run(ctx)
if err != nil {
return err
}
done <- struct{}{}
return nil
}
f := func(ctx context.Context, e error) error {
err := fallback(ctx, e)
if err != nil {
return err
}
done <- struct{}{}
return nil
}
var errChan chan error
if fallback == nil {
errChan = GoC(ctx, name, r, nil)
} else {
errChan = GoC(ctx, name, r, f)
}
select {
case <-done:
return nil
case err := <-errChan:
return err
}
} | [
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] | // DoC runs your function in a synchronous manner, blocking until either your function succeeds
// or an error is returned, including hystrix circuit errors | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/hystrix.go#L217-L253 | train |
afex/hystrix-go | hystrix/hystrix.go | errorWithFallback | func (c *command) errorWithFallback(ctx context.Context, err error) {
eventType := "failure"
if err == ErrCircuitOpen {
eventType = "short-circuit"
} else if err == ErrMaxConcurrency {
eventType = "rejected"
} else if err == ErrTimeout {
eventType = "timeout"
} else if err == context.Canceled {
eventType = "context_canceled"
} else if err == context.DeadlineExceeded {
eventType = "context_deadline_exceeded"
}
c.reportEvent(eventType)
fallbackErr := c.tryFallback(ctx, err)
if fallbackErr != nil {
c.errChan <- fallbackErr
}
} | go | func (c *command) errorWithFallback(ctx context.Context, err error) {
eventType := "failure"
if err == ErrCircuitOpen {
eventType = "short-circuit"
} else if err == ErrMaxConcurrency {
eventType = "rejected"
} else if err == ErrTimeout {
eventType = "timeout"
} else if err == context.Canceled {
eventType = "context_canceled"
} else if err == context.DeadlineExceeded {
eventType = "context_deadline_exceeded"
}
c.reportEvent(eventType)
fallbackErr := c.tryFallback(ctx, err)
if fallbackErr != nil {
c.errChan <- fallbackErr
}
} | [
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] | // errorWithFallback triggers the fallback while reporting the appropriate metric events. | [
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"."
] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/hystrix.go#L263-L282 | train |
afex/hystrix-go | hystrix/settings.go | Configure | func Configure(cmds map[string]CommandConfig) {
for k, v := range cmds {
ConfigureCommand(k, v)
}
} | go | func Configure(cmds map[string]CommandConfig) {
for k, v := range cmds {
ConfigureCommand(k, v)
}
} | [
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] | // Configure applies settings for a set of circuits | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/settings.go#L51-L55 | train |
afex/hystrix-go | hystrix/settings.go | ConfigureCommand | func ConfigureCommand(name string, config CommandConfig) {
settingsMutex.Lock()
defer settingsMutex.Unlock()
timeout := DefaultTimeout
if config.Timeout != 0 {
timeout = config.Timeout
}
max := DefaultMaxConcurrent
if config.MaxConcurrentRequests != 0 {
max = config.MaxConcurrentRequests
}
volume := DefaultVolumeThreshold
if config.RequestVolumeThreshold != 0 {
volume = config.RequestVolumeThreshold
}
sleep := DefaultSleepWindow
if config.SleepWindow != 0 {
sleep = config.SleepWindow
}
errorPercent := DefaultErrorPercentThreshold
if config.ErrorPercentThreshold != 0 {
errorPercent = config.ErrorPercentThreshold
}
circuitSettings[name] = &Settings{
Timeout: time.Duration(timeout) * time.Millisecond,
MaxConcurrentRequests: max,
RequestVolumeThreshold: uint64(volume),
SleepWindow: time.Duration(sleep) * time.Millisecond,
ErrorPercentThreshold: errorPercent,
}
} | go | func ConfigureCommand(name string, config CommandConfig) {
settingsMutex.Lock()
defer settingsMutex.Unlock()
timeout := DefaultTimeout
if config.Timeout != 0 {
timeout = config.Timeout
}
max := DefaultMaxConcurrent
if config.MaxConcurrentRequests != 0 {
max = config.MaxConcurrentRequests
}
volume := DefaultVolumeThreshold
if config.RequestVolumeThreshold != 0 {
volume = config.RequestVolumeThreshold
}
sleep := DefaultSleepWindow
if config.SleepWindow != 0 {
sleep = config.SleepWindow
}
errorPercent := DefaultErrorPercentThreshold
if config.ErrorPercentThreshold != 0 {
errorPercent = config.ErrorPercentThreshold
}
circuitSettings[name] = &Settings{
Timeout: time.Duration(timeout) * time.Millisecond,
MaxConcurrentRequests: max,
RequestVolumeThreshold: uint64(volume),
SleepWindow: time.Duration(sleep) * time.Millisecond,
ErrorPercentThreshold: errorPercent,
}
} | [
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] | // ConfigureCommand applies settings for a circuit | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/settings.go#L58-L94 | train |
afex/hystrix-go | hystrix/metric_collector/default_metric_collector.go | NumRequests | func (d *DefaultMetricCollector) NumRequests() *rolling.Number {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.numRequests
} | go | func (d *DefaultMetricCollector) NumRequests() *rolling.Number {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.numRequests
} | [
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] | // NumRequests returns the rolling number of requests | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/metric_collector/default_metric_collector.go#L43-L47 | train |
afex/hystrix-go | hystrix/metric_collector/default_metric_collector.go | Errors | func (d *DefaultMetricCollector) Errors() *rolling.Number {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.errors
} | go | func (d *DefaultMetricCollector) Errors() *rolling.Number {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.errors
} | [
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] | // Errors returns the rolling number of errors | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/metric_collector/default_metric_collector.go#L50-L54 | train |
afex/hystrix-go | hystrix/metric_collector/default_metric_collector.go | Successes | func (d *DefaultMetricCollector) Successes() *rolling.Number {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.successes
} | go | func (d *DefaultMetricCollector) Successes() *rolling.Number {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.successes
} | [
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"}"
] | // Successes returns the rolling number of successes | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/metric_collector/default_metric_collector.go#L57-L61 | train |
afex/hystrix-go | hystrix/metric_collector/default_metric_collector.go | Failures | func (d *DefaultMetricCollector) Failures() *rolling.Number {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.failures
} | go | func (d *DefaultMetricCollector) Failures() *rolling.Number {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.failures
} | [
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] | // Failures returns the rolling number of failures | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/metric_collector/default_metric_collector.go#L64-L68 | train |
afex/hystrix-go | hystrix/metric_collector/default_metric_collector.go | Rejects | func (d *DefaultMetricCollector) Rejects() *rolling.Number {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.rejects
} | go | func (d *DefaultMetricCollector) Rejects() *rolling.Number {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.rejects
} | [
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] | // Rejects returns the rolling number of rejects | [
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"of",
"rejects"
] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/metric_collector/default_metric_collector.go#L71-L75 | train |
afex/hystrix-go | hystrix/metric_collector/default_metric_collector.go | ShortCircuits | func (d *DefaultMetricCollector) ShortCircuits() *rolling.Number {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.shortCircuits
} | go | func (d *DefaultMetricCollector) ShortCircuits() *rolling.Number {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.shortCircuits
} | [
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] | // ShortCircuits returns the rolling number of short circuits | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/metric_collector/default_metric_collector.go#L78-L82 | train |
afex/hystrix-go | hystrix/metric_collector/default_metric_collector.go | Timeouts | func (d *DefaultMetricCollector) Timeouts() *rolling.Number {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.timeouts
} | go | func (d *DefaultMetricCollector) Timeouts() *rolling.Number {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.timeouts
} | [
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] | // Timeouts returns the rolling number of timeouts | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/metric_collector/default_metric_collector.go#L85-L89 | train |
afex/hystrix-go | hystrix/metric_collector/default_metric_collector.go | FallbackSuccesses | func (d *DefaultMetricCollector) FallbackSuccesses() *rolling.Number {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.fallbackSuccesses
} | go | func (d *DefaultMetricCollector) FallbackSuccesses() *rolling.Number {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.fallbackSuccesses
} | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/metric_collector/default_metric_collector.go#L92-L96 | train |
afex/hystrix-go | hystrix/metric_collector/default_metric_collector.go | FallbackFailures | func (d *DefaultMetricCollector) FallbackFailures() *rolling.Number {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.fallbackFailures
} | go | func (d *DefaultMetricCollector) FallbackFailures() *rolling.Number {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.fallbackFailures
} | [
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] | // FallbackFailures returns the rolling number of fallback failures | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/metric_collector/default_metric_collector.go#L111-L115 | train |
afex/hystrix-go | hystrix/metric_collector/default_metric_collector.go | TotalDuration | func (d *DefaultMetricCollector) TotalDuration() *rolling.Timing {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.totalDuration
} | go | func (d *DefaultMetricCollector) TotalDuration() *rolling.Timing {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.totalDuration
} | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/metric_collector/default_metric_collector.go#L118-L122 | train |
afex/hystrix-go | hystrix/metric_collector/default_metric_collector.go | RunDuration | func (d *DefaultMetricCollector) RunDuration() *rolling.Timing {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.runDuration
} | go | func (d *DefaultMetricCollector) RunDuration() *rolling.Timing {
d.mutex.RLock()
defer d.mutex.RUnlock()
return d.runDuration
} | [
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] | // RunDuration returns the rolling run duration | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/metric_collector/default_metric_collector.go#L125-L129 | train |
afex/hystrix-go | hystrix/metric_collector/default_metric_collector.go | Reset | func (d *DefaultMetricCollector) Reset() {
d.mutex.Lock()
defer d.mutex.Unlock()
d.numRequests = rolling.NewNumber()
d.errors = rolling.NewNumber()
d.successes = rolling.NewNumber()
d.rejects = rolling.NewNumber()
d.shortCircuits = rolling.NewNumber()
d.failures = rolling.NewNumber()
d.timeouts = rolling.NewNumber()
d.fallbackSuccesses = rolling.NewNumber()
d.fallbackFailures = rolling.NewNumber()
d.contextCanceled = rolling.NewNumber()
d.contextDeadlineExceeded = rolling.NewNumber()
d.totalDuration = rolling.NewTiming()
d.runDuration = rolling.NewTiming()
} | go | func (d *DefaultMetricCollector) Reset() {
d.mutex.Lock()
defer d.mutex.Unlock()
d.numRequests = rolling.NewNumber()
d.errors = rolling.NewNumber()
d.successes = rolling.NewNumber()
d.rejects = rolling.NewNumber()
d.shortCircuits = rolling.NewNumber()
d.failures = rolling.NewNumber()
d.timeouts = rolling.NewNumber()
d.fallbackSuccesses = rolling.NewNumber()
d.fallbackFailures = rolling.NewNumber()
d.contextCanceled = rolling.NewNumber()
d.contextDeadlineExceeded = rolling.NewNumber()
d.totalDuration = rolling.NewTiming()
d.runDuration = rolling.NewTiming()
} | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/metric_collector/default_metric_collector.go#L152-L169 | train |
afex/hystrix-go | hystrix/rolling/rolling_timing.go | NewTiming | func NewTiming() *Timing {
r := &Timing{
Buckets: make(map[int64]*timingBucket),
Mutex: &sync.RWMutex{},
}
return r
} | go | func NewTiming() *Timing {
r := &Timing{
Buckets: make(map[int64]*timingBucket),
Mutex: &sync.RWMutex{},
}
return r
} | [
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] | // NewTiming creates a RollingTiming struct. | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/rolling/rolling_timing.go#L26-L32 | train |
afex/hystrix-go | hystrix/rolling/rolling_timing.go | SortedDurations | func (r *Timing) SortedDurations() []time.Duration {
r.Mutex.RLock()
t := r.LastCachedTime
r.Mutex.RUnlock()
if t+time.Duration(1*time.Second).Nanoseconds() > time.Now().UnixNano() {
// don't recalculate if current cache is still fresh
return r.CachedSortedDurations
}
var durations byDuration
now := time.Now()
r.Mutex.Lock()
defer r.Mutex.Unlock()
for timestamp, b := range r.Buckets {
// TODO: configurable rolling window
if timestamp >= now.Unix()-60 {
for _, d := range b.Durations {
durations = append(durations, d)
}
}
}
sort.Sort(durations)
r.CachedSortedDurations = durations
r.LastCachedTime = time.Now().UnixNano()
return r.CachedSortedDurations
} | go | func (r *Timing) SortedDurations() []time.Duration {
r.Mutex.RLock()
t := r.LastCachedTime
r.Mutex.RUnlock()
if t+time.Duration(1*time.Second).Nanoseconds() > time.Now().UnixNano() {
// don't recalculate if current cache is still fresh
return r.CachedSortedDurations
}
var durations byDuration
now := time.Now()
r.Mutex.Lock()
defer r.Mutex.Unlock()
for timestamp, b := range r.Buckets {
// TODO: configurable rolling window
if timestamp >= now.Unix()-60 {
for _, d := range b.Durations {
durations = append(durations, d)
}
}
}
sort.Sort(durations)
r.CachedSortedDurations = durations
r.LastCachedTime = time.Now().UnixNano()
return r.CachedSortedDurations
} | [
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] | // SortedDurations returns an array of time.Duration sorted from shortest
// to longest that have occurred in the last 60 seconds. | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/rolling/rolling_timing.go#L42-L73 | train |
afex/hystrix-go | hystrix/rolling/rolling_timing.go | Add | func (r *Timing) Add(duration time.Duration) {
b := r.getCurrentBucket()
r.Mutex.Lock()
defer r.Mutex.Unlock()
b.Durations = append(b.Durations, duration)
r.removeOldBuckets()
} | go | func (r *Timing) Add(duration time.Duration) {
b := r.getCurrentBucket()
r.Mutex.Lock()
defer r.Mutex.Unlock()
b.Durations = append(b.Durations, duration)
r.removeOldBuckets()
} | [
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afex/hystrix-go | hystrix/rolling/rolling_timing.go | Percentile | func (r *Timing) Percentile(p float64) uint32 {
sortedDurations := r.SortedDurations()
length := len(sortedDurations)
if length <= 0 {
return 0
}
pos := r.ordinal(len(sortedDurations), p) - 1
return uint32(sortedDurations[pos].Nanoseconds() / 1000000)
} | go | func (r *Timing) Percentile(p float64) uint32 {
sortedDurations := r.SortedDurations()
length := len(sortedDurations)
if length <= 0 {
return 0
}
pos := r.ordinal(len(sortedDurations), p) - 1
return uint32(sortedDurations[pos].Nanoseconds() / 1000000)
} | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/rolling/rolling_timing.go#L115-L124 | train |
afex/hystrix-go | hystrix/rolling/rolling_timing.go | Mean | func (r *Timing) Mean() uint32 {
sortedDurations := r.SortedDurations()
var sum time.Duration
for _, d := range sortedDurations {
sum += d
}
length := int64(len(sortedDurations))
if length == 0 {
return 0
}
return uint32(sum.Nanoseconds()/length) / 1000000
} | go | func (r *Timing) Mean() uint32 {
sortedDurations := r.SortedDurations()
var sum time.Duration
for _, d := range sortedDurations {
sum += d
}
length := int64(len(sortedDurations))
if length == 0 {
return 0
}
return uint32(sum.Nanoseconds()/length) / 1000000
} | [
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"sum",
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"Nanoseconds",
"(",
")",
"/",
"length",
")",
"/",
"1000000",
"\n",
"}"
] | // Mean computes the average timing in the last 60 seconds. | [
"Mean",
"computes",
"the",
"average",
"timing",
"in",
"the",
"last",
"60",
"seconds",
"."
] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/rolling/rolling_timing.go#L135-L148 | train |
afex/hystrix-go | hystrix/metrics.go | DefaultCollector | func (m *metricExchange) DefaultCollector() *metricCollector.DefaultMetricCollector {
if len(m.metricCollectors) < 1 {
panic("No Metric Collectors Registered.")
}
collection, ok := m.metricCollectors[0].(*metricCollector.DefaultMetricCollector)
if !ok {
panic("Default metric collector is not registered correctly. The default metric collector must be registered first.")
}
return collection
} | go | func (m *metricExchange) DefaultCollector() *metricCollector.DefaultMetricCollector {
if len(m.metricCollectors) < 1 {
panic("No Metric Collectors Registered.")
}
collection, ok := m.metricCollectors[0].(*metricCollector.DefaultMetricCollector)
if !ok {
panic("Default metric collector is not registered correctly. The default metric collector must be registered first.")
}
return collection
} | [
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"}"
] | // The Default Collector function will panic if collectors are not setup to specification. | [
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"are",
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/metrics.go#L41-L50 | train |
afex/hystrix-go | hystrix/eventstream.go | Start | func (sh *StreamHandler) Start() {
sh.requests = make(map[*http.Request]chan []byte)
sh.done = make(chan struct{})
go sh.loop()
} | go | func (sh *StreamHandler) Start() {
sh.requests = make(map[*http.Request]chan []byte)
sh.done = make(chan struct{})
go sh.loop()
} | [
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] | // Start begins watching the in-memory circuit breakers for metrics | [
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/eventstream.go#L30-L34 | train |
afex/hystrix-go | hystrix/metric_collector/metric_collector.go | InitializeMetricCollectors | func (m *metricCollectorRegistry) InitializeMetricCollectors(name string) []MetricCollector {
m.lock.RLock()
defer m.lock.RUnlock()
metrics := make([]MetricCollector, len(m.registry))
for i, metricCollectorInitializer := range m.registry {
metrics[i] = metricCollectorInitializer(name)
}
return metrics
} | go | func (m *metricCollectorRegistry) InitializeMetricCollectors(name string) []MetricCollector {
m.lock.RLock()
defer m.lock.RUnlock()
metrics := make([]MetricCollector, len(m.registry))
for i, metricCollectorInitializer := range m.registry {
metrics[i] = metricCollectorInitializer(name)
}
return metrics
} | [
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"}",
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] | // InitializeMetricCollectors runs the registried MetricCollector Initializers to create an array of MetricCollectors. | [
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"MetricCollector",
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/metric_collector/metric_collector.go#L23-L32 | train |
afex/hystrix-go | hystrix/metric_collector/metric_collector.go | Register | func (m *metricCollectorRegistry) Register(initMetricCollector func(string) MetricCollector) {
m.lock.Lock()
defer m.lock.Unlock()
m.registry = append(m.registry, initMetricCollector)
} | go | func (m *metricCollectorRegistry) Register(initMetricCollector func(string) MetricCollector) {
m.lock.Lock()
defer m.lock.Unlock()
m.registry = append(m.registry, initMetricCollector)
} | [
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"\n",
"}"
] | // Register places a MetricCollector Initializer in the registry maintained by this metricCollectorRegistry. | [
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"MetricCollector",
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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/metric_collector/metric_collector.go#L35-L40 | train |
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