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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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] | // 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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// a given session for an ID | [
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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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] | // Read is used to read from the stream | [
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"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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] | 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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] | // write is used to write to the stream, may return on
// a short write. | [
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"."
] | 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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// based on the current stream state | [
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] | 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",
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"window",
"update",
"enabling",
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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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] | 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()
} | [
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] | // forceClose is used for when the session is exiting | [
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] | 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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")",
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"}",
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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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] | // incrSendWindow updates the size of our send window | [
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"send",
"window"
] | 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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] | 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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] | 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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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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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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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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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,
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bufRead: bufio.NewReader(conn),
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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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] | 2f1d1f20f75d5404f53b9edf6b53ed5505508675 | https://github.com/hashicorp/yamux/blob/2f1d1f20f75d5404f53b9edf6b53ed5505508675/session.go#L146-L152 | train |
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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"}"
] | // exitErr is used to handle an error that is causing the
// session to terminate. | [
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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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] | // Ping is used to measure the RTT response time | [
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"is",
"used",
"to",
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"RTT",
"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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"}"
] | // waitForSendErr waits to send a header, checking for a potential shutdown | [
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"checking",
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] | 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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":",
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"}",
"\n",
"}"
] | // 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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] | // 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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"."
] | 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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] | // 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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"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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"\n",
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"err",
"\n",
"}",
"\n",
"return",
"nil",
"\n",
"}"
] | // 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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"for",
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"typePing",
"frame"
] | 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 | [
"incomingStream",
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"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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] | // InitializeGraphiteCollector creates the connection to the graphite server
// and should be called before any metrics are recorded. | [
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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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] | 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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] | // toggleForceOpen allows manually causing the fallback logic for all instances
// of a given command. | [
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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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"}",
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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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] | // Increment increments the number in current timeBucket. | [
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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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] | // UpdateMax updates the maximum value in the current bucket. | [
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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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"}"
] | // Sum sums the values over the buckets in the last 10 seconds. | [
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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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] | // Max returns the maximum value seen in the last 10 seconds. | [
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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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] | // Go runs your function while tracking the health of previous calls to it.
// 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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"}",
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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 | [
"DoC",
"runs",
"your",
"function",
"in",
"a",
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"or",
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"is",
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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. | [
"errorWithFallback",
"triggers",
"the",
"fallback",
"while",
"reporting",
"the",
"appropriate",
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"events",
"."
] | 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)
}
} | [
"func",
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"v",
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"}",
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"}"
] | // Configure applies settings for a set of circuits | [
"Configure",
"applies",
"settings",
"for",
"a",
"set",
"of",
"circuits"
] | 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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] | 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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] | // FallbackSuccesses returns the rolling number of fallback successes | [
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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 | [
"FallbackFailures",
"returns",
"the",
"rolling",
"number",
"of",
"fallback",
"failures"
] | 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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] | 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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] | 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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] | 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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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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] | // InitializeMetricCollectors runs the registried MetricCollector Initializers to create an array of MetricCollectors. | [
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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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] | fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a | https://github.com/afex/hystrix-go/blob/fa1af6a1f4f56e0e50d427fe901cd604d8c6fb8a/hystrix/metric_collector/metric_collector.go#L35-L40 | train |
kardianos/service | version.go | versionAtMost | func versionAtMost(version, max []int) (bool, error) {
if comp, err := versionCompare(version, max); err != nil {
return false, err
} else if comp == 1 {
return false, nil
}
return true, nil
} | go | func versionAtMost(version, max []int) (bool, error) {
if comp, err := versionCompare(version, max); err != nil {
return false, err
} else if comp == 1 {
return false, nil
}
return true, nil
} | [
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] | 0e5bec1b9eec14f9070a6f49ad7e0242f1545d66 | https://github.com/kardianos/service/blob/0e5bec1b9eec14f9070a6f49ad7e0242f1545d66/version.go#L10-L17 | train |
kardianos/service | version.go | versionCompare | func versionCompare(v1, v2 []int) (int, error) {
if len(v1) != len(v2) {
return 0, errors.New("version length mismatch")
}
for idx, v2S := range v2 {
v1S := v1[idx]
if v1S > v2S {
return 1, nil
}
if v1S < v2S {
return -1, nil
}
}
return 0, nil
} | go | func versionCompare(v1, v2 []int) (int, error) {
if len(v1) != len(v2) {
return 0, errors.New("version length mismatch")
}
for idx, v2S := range v2 {
v1S := v1[idx]
if v1S > v2S {
return 1, nil
}
if v1S < v2S {
return -1, nil
}
}
return 0, nil
} | [
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// An error will be returned if there is an array length mismatch.
// Return values are as follows
// -1 - v1 is less than v2
// 0 - v1 is equal to v2
// 1 - v1 is greater than v2 | [
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kardianos/service | version.go | parseVersion | func parseVersion(v string) []int {
version := make([]int, 3)
for idx, vStr := range strings.Split(v, ".") {
vS, err := strconv.Atoi(vStr)
if err != nil {
return nil
}
version[idx] = vS
}
return version
} | go | func parseVersion(v string) []int {
version := make([]int, 3)
for idx, vStr := range strings.Split(v, ".") {
vS, err := strconv.Atoi(vStr)
if err != nil {
return nil
}
version[idx] = vS
}
return version
} | [
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] | 0e5bec1b9eec14f9070a6f49ad7e0242f1545d66 | https://github.com/kardianos/service/blob/0e5bec1b9eec14f9070a6f49ad7e0242f1545d66/version.go#L45-L57 | train |
kardianos/service | service.go | New | func New(i Interface, c *Config) (Service, error) {
if len(c.Name) == 0 {
return nil, ErrNameFieldRequired
}
if system == nil {
return nil, ErrNoServiceSystemDetected
}
return system.New(i, c)
} | go | func New(i Interface, c *Config) (Service, error) {
if len(c.Name) == 0 {
return nil, ErrNameFieldRequired
}
if system == nil {
return nil, ErrNoServiceSystemDetected
}
return system.New(i, c)
} | [
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] | 0e5bec1b9eec14f9070a6f49ad7e0242f1545d66 | https://github.com/kardianos/service/blob/0e5bec1b9eec14f9070a6f49ad7e0242f1545d66/service.go#L160-L168 | train |
kardianos/service | service.go | bool | func (kv KeyValue) bool(name string, defaultValue bool) bool {
if v, found := kv[name]; found {
if castValue, is := v.(bool); is {
return castValue
}
}
return defaultValue
} | go | func (kv KeyValue) bool(name string, defaultValue bool) bool {
if v, found := kv[name]; found {
if castValue, is := v.(bool); is {
return castValue
}
}
return defaultValue
} | [
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] | 0e5bec1b9eec14f9070a6f49ad7e0242f1545d66 | https://github.com/kardianos/service/blob/0e5bec1b9eec14f9070a6f49ad7e0242f1545d66/service.go#L176-L183 | train |
kardianos/service | service.go | Control | func Control(s Service, action string) error {
var err error
switch action {
case ControlAction[0]:
err = s.Start()
case ControlAction[1]:
err = s.Stop()
case ControlAction[2]:
err = s.Restart()
case ControlAction[3]:
err = s.Install()
case ControlAction[4]:
err = s.Uninstall()
default:
err = fmt.Errorf("Unknown action %s", action)
}
if err != nil {
return fmt.Errorf("Failed to %s %v: %v", action, s, err)
}
return nil
} | go | func Control(s Service, action string) error {
var err error
switch action {
case ControlAction[0]:
err = s.Start()
case ControlAction[1]:
err = s.Stop()
case ControlAction[2]:
err = s.Restart()
case ControlAction[3]:
err = s.Install()
case ControlAction[4]:
err = s.Uninstall()
default:
err = fmt.Errorf("Unknown action %s", action)
}
if err != nil {
return fmt.Errorf("Failed to %s %v: %v", action, s, err)
}
return nil
} | [
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] | 0e5bec1b9eec14f9070a6f49ad7e0242f1545d66 | https://github.com/kardianos/service/blob/0e5bec1b9eec14f9070a6f49ad7e0242f1545d66/service.go#L368-L388 | train |
kardianos/service | service_windows.go | Errorf | func (l WindowsLogger) Errorf(format string, a ...interface{}) error {
return l.send(l.ev.Error(3, fmt.Sprintf(format, a...)))
} | go | func (l WindowsLogger) Errorf(format string, a ...interface{}) error {
return l.send(l.ev.Error(3, fmt.Sprintf(format, a...)))
} | [
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kardianos/service | service_windows.go | Warningf | func (l WindowsLogger) Warningf(format string, a ...interface{}) error {
return l.send(l.ev.Warning(2, fmt.Sprintf(format, a...)))
} | go | func (l WindowsLogger) Warningf(format string, a ...interface{}) error {
return l.send(l.ev.Warning(2, fmt.Sprintf(format, a...)))
} | [
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] | 0e5bec1b9eec14f9070a6f49ad7e0242f1545d66 | https://github.com/kardianos/service/blob/0e5bec1b9eec14f9070a6f49ad7e0242f1545d66/service_windows.go#L92-L94 | train |
kardianos/service | service_windows.go | Infof | func (l WindowsLogger) Infof(format string, a ...interface{}) error {
return l.send(l.ev.Info(1, fmt.Sprintf(format, a...)))
} | go | func (l WindowsLogger) Infof(format string, a ...interface{}) error {
return l.send(l.ev.Info(1, fmt.Sprintf(format, a...)))
} | [
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] | 0e5bec1b9eec14f9070a6f49ad7e0242f1545d66 | https://github.com/kardianos/service/blob/0e5bec1b9eec14f9070a6f49ad7e0242f1545d66/service_windows.go#L97-L99 | train |
kardianos/service | service_windows.go | NError | func (l WindowsLogger) NError(eventID uint32, v ...interface{}) error {
return l.send(l.ev.Error(eventID, fmt.Sprint(v...)))
} | go | func (l WindowsLogger) NError(eventID uint32, v ...interface{}) error {
return l.send(l.ev.Error(eventID, fmt.Sprint(v...)))
} | [
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] | 0e5bec1b9eec14f9070a6f49ad7e0242f1545d66 | https://github.com/kardianos/service/blob/0e5bec1b9eec14f9070a6f49ad7e0242f1545d66/service_windows.go#L102-L104 | train |
kardianos/service | service_windows.go | NWarning | func (l WindowsLogger) NWarning(eventID uint32, v ...interface{}) error {
return l.send(l.ev.Warning(eventID, fmt.Sprint(v...)))
} | go | func (l WindowsLogger) NWarning(eventID uint32, v ...interface{}) error {
return l.send(l.ev.Warning(eventID, fmt.Sprint(v...)))
} | [
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"(",
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] | 0e5bec1b9eec14f9070a6f49ad7e0242f1545d66 | https://github.com/kardianos/service/blob/0e5bec1b9eec14f9070a6f49ad7e0242f1545d66/service_windows.go#L107-L109 | train |
kardianos/service | service_windows.go | NInfo | func (l WindowsLogger) NInfo(eventID uint32, v ...interface{}) error {
return l.send(l.ev.Info(eventID, fmt.Sprint(v...)))
} | go | func (l WindowsLogger) NInfo(eventID uint32, v ...interface{}) error {
return l.send(l.ev.Info(eventID, fmt.Sprint(v...)))
} | [
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"NInfo",
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"message",
"and",
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"event",
"ID",
"."
] | 0e5bec1b9eec14f9070a6f49ad7e0242f1545d66 | https://github.com/kardianos/service/blob/0e5bec1b9eec14f9070a6f49ad7e0242f1545d66/service_windows.go#L112-L114 | train |
kardianos/service | service_windows.go | NErrorf | func (l WindowsLogger) NErrorf(eventID uint32, format string, a ...interface{}) error {
return l.send(l.ev.Error(eventID, fmt.Sprintf(format, a...)))
} | go | func (l WindowsLogger) NErrorf(eventID uint32, format string, a ...interface{}) error {
return l.send(l.ev.Error(eventID, fmt.Sprintf(format, a...)))
} | [
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"."
] | 0e5bec1b9eec14f9070a6f49ad7e0242f1545d66 | https://github.com/kardianos/service/blob/0e5bec1b9eec14f9070a6f49ad7e0242f1545d66/service_windows.go#L117-L119 | train |
kardianos/service | service_windows.go | NWarningf | func (l WindowsLogger) NWarningf(eventID uint32, format string, a ...interface{}) error {
return l.send(l.ev.Warning(eventID, fmt.Sprintf(format, a...)))
} | go | func (l WindowsLogger) NWarningf(eventID uint32, format string, a ...interface{}) error {
return l.send(l.ev.Warning(eventID, fmt.Sprintf(format, a...)))
} | [
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] | 0e5bec1b9eec14f9070a6f49ad7e0242f1545d66 | https://github.com/kardianos/service/blob/0e5bec1b9eec14f9070a6f49ad7e0242f1545d66/service_windows.go#L122-L124 | train |
kardianos/service | service_windows.go | NInfof | func (l WindowsLogger) NInfof(eventID uint32, format string, a ...interface{}) error {
return l.send(l.ev.Info(eventID, fmt.Sprintf(format, a...)))
} | go | func (l WindowsLogger) NInfof(eventID uint32, format string, a ...interface{}) error {
return l.send(l.ev.Info(eventID, fmt.Sprintf(format, a...)))
} | [
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] | 0e5bec1b9eec14f9070a6f49ad7e0242f1545d66 | https://github.com/kardianos/service/blob/0e5bec1b9eec14f9070a6f49ad7e0242f1545d66/service_windows.go#L127-L129 | train |
kardianos/service | service_windows.go | getStopTimeout | func getStopTimeout() time.Duration {
// For default and paths see https://support.microsoft.com/en-us/kb/146092
defaultTimeout := time.Millisecond * 20000
key, err := registry.OpenKey(registry.LOCAL_MACHINE, `SYSTEM\CurrentControlSet\Control`, registry.READ)
if err != nil {
return defaultTimeout
}
sv, _, err := key.GetStringValue("WaitToKillServiceTimeout")
if err != nil {
return defaultTimeout
}
v, err := strconv.Atoi(sv)
if err != nil {
return defaultTimeout
}
return time.Millisecond * time.Duration(v)
} | go | func getStopTimeout() time.Duration {
// For default and paths see https://support.microsoft.com/en-us/kb/146092
defaultTimeout := time.Millisecond * 20000
key, err := registry.OpenKey(registry.LOCAL_MACHINE, `SYSTEM\CurrentControlSet\Control`, registry.READ)
if err != nil {
return defaultTimeout
}
sv, _, err := key.GetStringValue("WaitToKillServiceTimeout")
if err != nil {
return defaultTimeout
}
v, err := strconv.Atoi(sv)
if err != nil {
return defaultTimeout
}
return time.Millisecond * time.Duration(v)
} | [
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] | 0e5bec1b9eec14f9070a6f49ad7e0242f1545d66 | https://github.com/kardianos/service/blob/0e5bec1b9eec14f9070a6f49ad7e0242f1545d66/service_windows.go#L406-L422 | train |
jroimartin/gocui | edit.go | simpleEditor | func simpleEditor(v *View, key Key, ch rune, mod Modifier) {
switch {
case ch != 0 && mod == 0:
v.EditWrite(ch)
case key == KeySpace:
v.EditWrite(' ')
case key == KeyBackspace || key == KeyBackspace2:
v.EditDelete(true)
case key == KeyDelete:
v.EditDelete(false)
case key == KeyInsert:
v.Overwrite = !v.Overwrite
case key == KeyEnter:
v.EditNewLine()
case key == KeyArrowDown:
v.MoveCursor(0, 1, false)
case key == KeyArrowUp:
v.MoveCursor(0, -1, false)
case key == KeyArrowLeft:
v.MoveCursor(-1, 0, false)
case key == KeyArrowRight:
v.MoveCursor(1, 0, false)
}
} | go | func simpleEditor(v *View, key Key, ch rune, mod Modifier) {
switch {
case ch != 0 && mod == 0:
v.EditWrite(ch)
case key == KeySpace:
v.EditWrite(' ')
case key == KeyBackspace || key == KeyBackspace2:
v.EditDelete(true)
case key == KeyDelete:
v.EditDelete(false)
case key == KeyInsert:
v.Overwrite = !v.Overwrite
case key == KeyEnter:
v.EditNewLine()
case key == KeyArrowDown:
v.MoveCursor(0, 1, false)
case key == KeyArrowUp:
v.MoveCursor(0, -1, false)
case key == KeyArrowLeft:
v.MoveCursor(-1, 0, false)
case key == KeyArrowRight:
v.MoveCursor(1, 0, false)
}
} | [
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] | c055c87ae801372cd74a0839b972db4f7697ae5f | https://github.com/jroimartin/gocui/blob/c055c87ae801372cd74a0839b972db4f7697ae5f/edit.go#L30-L53 | train |
jroimartin/gocui | edit.go | EditWrite | func (v *View) EditWrite(ch rune) {
v.writeRune(v.cx, v.cy, ch)
v.MoveCursor(1, 0, true)
} | go | func (v *View) EditWrite(ch rune) {
v.writeRune(v.cx, v.cy, ch)
v.MoveCursor(1, 0, true)
} | [
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] | c055c87ae801372cd74a0839b972db4f7697ae5f | https://github.com/jroimartin/gocui/blob/c055c87ae801372cd74a0839b972db4f7697ae5f/edit.go#L56-L59 | train |
jroimartin/gocui | edit.go | EditDelete | func (v *View) EditDelete(back bool) {
x, y := v.ox+v.cx, v.oy+v.cy
if y < 0 {
return
} else if y >= len(v.viewLines) {
v.MoveCursor(-1, 0, true)
return
}
maxX, _ := v.Size()
if back {
if x == 0 { // start of the line
if y < 1 {
return
}
var maxPrevWidth int
if v.Wrap {
maxPrevWidth = maxX
} else {
maxPrevWidth = maxInt
}
if v.viewLines[y].linesX == 0 { // regular line
v.mergeLines(v.cy - 1)
if len(v.viewLines[y-1].line) < maxPrevWidth {
v.MoveCursor(-1, 0, true)
}
} else { // wrapped line
v.deleteRune(len(v.viewLines[y-1].line)-1, v.cy-1)
v.MoveCursor(-1, 0, true)
}
} else { // middle/end of the line
v.deleteRune(v.cx-1, v.cy)
v.MoveCursor(-1, 0, true)
}
} else {
if x == len(v.viewLines[y].line) { // end of the line
v.mergeLines(v.cy)
} else { // start/middle of the line
v.deleteRune(v.cx, v.cy)
}
}
} | go | func (v *View) EditDelete(back bool) {
x, y := v.ox+v.cx, v.oy+v.cy
if y < 0 {
return
} else if y >= len(v.viewLines) {
v.MoveCursor(-1, 0, true)
return
}
maxX, _ := v.Size()
if back {
if x == 0 { // start of the line
if y < 1 {
return
}
var maxPrevWidth int
if v.Wrap {
maxPrevWidth = maxX
} else {
maxPrevWidth = maxInt
}
if v.viewLines[y].linesX == 0 { // regular line
v.mergeLines(v.cy - 1)
if len(v.viewLines[y-1].line) < maxPrevWidth {
v.MoveCursor(-1, 0, true)
}
} else { // wrapped line
v.deleteRune(len(v.viewLines[y-1].line)-1, v.cy-1)
v.MoveCursor(-1, 0, true)
}
} else { // middle/end of the line
v.deleteRune(v.cx-1, v.cy)
v.MoveCursor(-1, 0, true)
}
} else {
if x == len(v.viewLines[y].line) { // end of the line
v.mergeLines(v.cy)
} else { // start/middle of the line
v.deleteRune(v.cx, v.cy)
}
}
} | [
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"}",
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"}",
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] | // EditDelete deletes a rune at the cursor position. back determines the
// direction. | [
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"the",
"cursor",
"position",
".",
"back",
"determines",
"the",
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"."
] | c055c87ae801372cd74a0839b972db4f7697ae5f | https://github.com/jroimartin/gocui/blob/c055c87ae801372cd74a0839b972db4f7697ae5f/edit.go#L63-L106 | train |
jroimartin/gocui | edit.go | EditNewLine | func (v *View) EditNewLine() {
v.breakLine(v.cx, v.cy)
v.ox = 0
v.cx = 0
v.MoveCursor(0, 1, true)
} | go | func (v *View) EditNewLine() {
v.breakLine(v.cx, v.cy)
v.ox = 0
v.cx = 0
v.MoveCursor(0, 1, true)
} | [
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"0",
",",
"1",
",",
"true",
")",
"\n",
"}"
] | // EditNewLine inserts a new line under the cursor. | [
"EditNewLine",
"inserts",
"a",
"new",
"line",
"under",
"the",
"cursor",
"."
] | c055c87ae801372cd74a0839b972db4f7697ae5f | https://github.com/jroimartin/gocui/blob/c055c87ae801372cd74a0839b972db4f7697ae5f/edit.go#L109-L114 | train |
jroimartin/gocui | edit.go | mergeLines | func (v *View) mergeLines(y int) error {
v.tainted = true
_, y, err := v.realPosition(0, y)
if err != nil {
return err
}
if y < 0 || y >= len(v.lines) {
return errors.New("invalid point")
}
if y < len(v.lines)-1 { // otherwise we don't need to merge anything
v.lines[y] = append(v.lines[y], v.lines[y+1]...)
v.lines = append(v.lines[:y+1], v.lines[y+2:]...)
}
return nil
} | go | func (v *View) mergeLines(y int) error {
v.tainted = true
_, y, err := v.realPosition(0, y)
if err != nil {
return err
}
if y < 0 || y >= len(v.lines) {
return errors.New("invalid point")
}
if y < len(v.lines)-1 { // otherwise we don't need to merge anything
v.lines[y] = append(v.lines[y], v.lines[y+1]...)
v.lines = append(v.lines[:y+1], v.lines[y+2:]...)
}
return nil
} | [
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":",
"]",
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")",
"\n",
"}",
"\n",
"return",
"nil",
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"}"
] | // mergeLines merges the lines "y" and "y+1" if possible. | [
"mergeLines",
"merges",
"the",
"lines",
"y",
"and",
"y",
"+",
"1",
"if",
"possible",
"."
] | c055c87ae801372cd74a0839b972db4f7697ae5f | https://github.com/jroimartin/gocui/blob/c055c87ae801372cd74a0839b972db4f7697ae5f/edit.go#L294-L311 | train |
jroimartin/gocui | keybinding.go | newKeybinding | func newKeybinding(viewname string, key Key, ch rune, mod Modifier, handler func(*Gui, *View) error) (kb *keybinding) {
kb = &keybinding{
viewName: viewname,
key: key,
ch: ch,
mod: mod,
handler: handler,
}
return kb
} | go | func newKeybinding(viewname string, key Key, ch rune, mod Modifier, handler func(*Gui, *View) error) (kb *keybinding) {
kb = &keybinding{
viewName: viewname,
key: key,
ch: ch,
mod: mod,
handler: handler,
}
return kb
} | [
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] | // newKeybinding returns a new Keybinding object. | [
"newKeybinding",
"returns",
"a",
"new",
"Keybinding",
"object",
"."
] | c055c87ae801372cd74a0839b972db4f7697ae5f | https://github.com/jroimartin/gocui/blob/c055c87ae801372cd74a0839b972db4f7697ae5f/keybinding.go#L19-L28 | train |
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