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flynn/flynn
pkg/syslog/rfc6587/rfc6587.go
Bytes
func Bytes(m *rfc5424.Message) []byte { msg := m.Bytes() return bytes.Join([][]byte{[]byte(strconv.Itoa(len(msg))), msg}, []byte{' '}) }
go
func Bytes(m *rfc5424.Message) []byte { msg := m.Bytes() return bytes.Join([][]byte{[]byte(strconv.Itoa(len(msg))), msg}, []byte{' '}) }
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// Bytes returns the RFC6587-framed bytes of an RFC5424 syslog Message, // including length prefix.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/syslog/rfc6587/rfc6587.go#L14-L17
train
flynn/flynn
pkg/syslog/rfc6587/rfc6587.go
Split
func Split(data []byte, atEOF bool) (advance int, token []byte, err error) { return split(false, data, atEOF) }
go
func Split(data []byte, atEOF bool) (advance int, token []byte, err error) { return split(false, data, atEOF) }
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// Split is a bufio.SplitFunc that splits on RFC6587-framed syslog messages.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/syslog/rfc6587/rfc6587.go#L24-L26
train
flynn/flynn
pkg/syslog/rfc6587/rfc6587.go
SplitWithNewlines
func SplitWithNewlines(data []byte, atEOF bool) (advance int, token []byte, err error) { return split(true, data, atEOF) }
go
func SplitWithNewlines(data []byte, atEOF bool) (advance int, token []byte, err error) { return split(true, data, atEOF) }
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// SplitWithNewlines is a bufio.SplitFunc that splits on RFC6587-framed syslog // messages that are each followed by a newline.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/syslog/rfc6587/rfc6587.go#L30-L32
train
flynn/flynn
pkg/connutil/close_notify.go
CloseNotifyConn
func CloseNotifyConn(conn net.Conn) net.Conn { pr, pw := io.Pipe() c := &closeNotifyConn{ Conn: conn, r: pr, cnc: make(chan bool), } go func() { _, err := io.Copy(pw, conn) if err == nil { err = io.EOF } pw.CloseWithError(err) close(c.cnc) }() return c }
go
func CloseNotifyConn(conn net.Conn) net.Conn { pr, pw := io.Pipe() c := &closeNotifyConn{ Conn: conn, r: pr, cnc: make(chan bool), } go func() { _, err := io.Copy(pw, conn) if err == nil { err = io.EOF } pw.CloseWithError(err) close(c.cnc) }() return c }
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// CloseNotifyConn returns a net.Conn that implements http.CloseNotifier. // Used to detect connections closed early on the client side.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/connutil/close_notify.go#L21-L40
train
flynn/flynn
pkg/sse/sse.go
Decode
func (dec *Decoder) Decode(v interface{}) error { data, err := dec.Reader.Read() if err != nil { return err } return json.Unmarshal(data, v) }
go
func (dec *Decoder) Decode(v interface{}) error { data, err := dec.Reader.Read() if err != nil { return err } return json.Unmarshal(data, v) }
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// Decode finds the next "data" field and decodes it into v
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/sse/sse.go#L103-L109
train
flynn/flynn
flannel/discoverd/registry.go
WatchSubnets
func (r *registry) WatchSubnets(since uint64, stop chan bool) (*subnet.Response, error) { for { select { case event, ok := <-r.events: if !ok { return nil, errors.New("unexpected close of discoverd event stream") } if event.Kind != discoverd.EventKindServiceMeta { continue } net := &Network{...
go
func (r *registry) WatchSubnets(since uint64, stop chan bool) (*subnet.Response, error) { for { select { case event, ok := <-r.events: if !ok { return nil, errors.New("unexpected close of discoverd event stream") } if event.Kind != discoverd.EventKindServiceMeta { continue } net := &Network{...
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// WatchSubnets waits for a service metadata event with an index greater than // a given value, and then returns a response.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/flannel/discoverd/registry.go#L99-L128
train
flynn/flynn
builder/build.go
newLogger
func newLogger(tty bool, file string, verbose bool) log15.Logger { stdoutFormat := log15.LogfmtFormat() if tty { stdoutFormat = log15.TerminalFormat() } stdoutHandler := log15.StreamHandler(os.Stdout, stdoutFormat) if !verbose { stdoutHandler = log15.LvlFilterHandler(log15.LvlInfo, stdoutHandler) } log := lo...
go
func newLogger(tty bool, file string, verbose bool) log15.Logger { stdoutFormat := log15.LogfmtFormat() if tty { stdoutFormat = log15.TerminalFormat() } stdoutHandler := log15.StreamHandler(os.Stdout, stdoutFormat) if !verbose { stdoutHandler = log15.LvlFilterHandler(log15.LvlInfo, stdoutHandler) } log := lo...
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// newLogger returns a log15.Logger which writes to stdout and a log file
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/builder/build.go#L296-L311
train
flynn/flynn
builder/build.go
NewProgressBar
func NewProgressBar(count int, tty bool) (*pb.ProgressBar, error) { bar := pb.New(count) if !tty { bar.Output = os.Stderr return bar, nil } // replace os.Stdout / os.Stderr with a pipe and copy output to a // channel so that the progress bar can be wiped before printing output type stdOutput struct { Out ...
go
func NewProgressBar(count int, tty bool) (*pb.ProgressBar, error) { bar := pb.New(count) if !tty { bar.Output = os.Stderr return bar, nil } // replace os.Stdout / os.Stderr with a pipe and copy output to a // channel so that the progress bar can be wiped before printing output type stdOutput struct { Out ...
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// NewProgressBar creates a progress bar which is pinned to the bottom of the // terminal screen
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/builder/build.go#L1021-L1092
train
flynn/flynn
pkg/tufutil/tufutil.go
GetVersion
func GetVersion(client *tuf.Client, name string) (string, error) { targets, err := client.Targets() if err != nil { return "", err } target, ok := targets[name] if !ok { return "", fmt.Errorf("missing %q in tuf targets", name) } if target.Custom == nil || len(*target.Custom) == 0 { return "", errors.New("m...
go
func GetVersion(client *tuf.Client, name string) (string, error) { targets, err := client.Targets() if err != nil { return "", err } target, ok := targets[name] if !ok { return "", fmt.Errorf("missing %q in tuf targets", name) } if target.Custom == nil || len(*target.Custom) == 0 { return "", errors.New("m...
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// GetVersion returns the given target's version from custom metadata
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/tufutil/tufutil.go#L69-L89
train
flynn/flynn
pkg/httphelper/httphelper.go
IsRetryableError
func IsRetryableError(err error) bool { e, ok := err.(JSONError) return ok && e.Retry }
go
func IsRetryableError(err error) bool { e, ok := err.(JSONError) return ok && e.Retry }
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// IsRetryableError indicates whether a HTTP request can be safely retried.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/httphelper/httphelper.go#L89-L92
train
flynn/flynn
pkg/sirenia/state/state.go
evalLater
func (p *Peer) evalLater(delay time.Duration) { if p.retryCh != nil { p.retryCh <- struct{}{} return } time.AfterFunc(delay, p.triggerEval) }
go
func (p *Peer) evalLater(delay time.Duration) { if p.retryCh != nil { p.retryCh <- struct{}{} return } time.AfterFunc(delay, p.triggerEval) }
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// evalLater triggers a cluster state evaluation after delay has elapsed
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/sirenia/state/state.go#L440-L446
train
flynn/flynn
pkg/sirenia/state/state.go
startTransitionToNormalMode
func (p *Peer) startTransitionToNormalMode() { log := p.log.New("fn", "startTransitionToNormalMode") if p.Info().State.Primary.Meta[p.idKey] != p.id || p.Info().Role != RolePrimary { panic("startTransitionToNormalMode called when not primary") } // In the normal takeover case, we'd pick an async. In this case, w...
go
func (p *Peer) startTransitionToNormalMode() { log := p.log.New("fn", "startTransitionToNormalMode") if p.Info().State.Primary.Meta[p.idKey] != p.id || p.Info().Role != RolePrimary { panic("startTransitionToNormalMode called when not primary") } // In the normal takeover case, we'd pick an async. In this case, w...
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// As the primary, converts the current cluster to normal mode from singleton // mode.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/sirenia/state/state.go#L946-L976
train
flynn/flynn
pkg/sirenia/state/state.go
applyConfig
func (p *Peer) applyConfig() (err error) { p.moving() log := p.log.New("fn", "applyConfig") if p.online == nil { panic("applyConfig with database in unknown state") } config := p.Config() if p.applied != nil && p.applied.Equal(config) && p.applied.State.Equal(config.State) { log.Info("skipping config apply,...
go
func (p *Peer) applyConfig() (err error) { p.moving() log := p.log.New("fn", "applyConfig") if p.online == nil { panic("applyConfig with database in unknown state") } config := p.Config() if p.applied != nil && p.applied.Equal(config) && p.applied.State.Equal(config.State) { log.Info("skipping config apply,...
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// Reconfigure database based on the current configuration. During // reconfiguration, new requests to reconfigure will be ignored, and incoming // cluster state changes will be recorded but otherwise ignored. When // reconfiguration completes, if the desired configuration has changed, we'll // take another lap to appl...
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/sirenia/state/state.go#L1009-L1075
train
flynn/flynn
pkg/sirenia/state/state.go
whichAsync
func (p *Peer) whichAsync() int { for i, a := range p.Info().State.Async { if p.id == a.Meta[p.idKey] { return i } } return -1 }
go
func (p *Peer) whichAsync() int { for i, a := range p.Info().State.Async { if p.id == a.Meta[p.idKey] { return i } } return -1 }
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// Determine our index in the async peer list. -1 means not present.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/sirenia/state/state.go#L1090-L1097
train
flynn/flynn
pkg/sirenia/state/state.go
lookupUpstream
func (p *Peer) lookupUpstream(whichAsync int) *discoverd.Instance { if whichAsync == 0 { return p.Info().State.Sync } return p.Info().State.Async[whichAsync-1] }
go
func (p *Peer) lookupUpstream(whichAsync int) *discoverd.Instance { if whichAsync == 0 { return p.Info().State.Sync } return p.Info().State.Async[whichAsync-1] }
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// Return the upstream peer for a given one of the async peers
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/sirenia/state/state.go#L1100-L1105
train
flynn/flynn
pkg/sirenia/state/state.go
lookupDownstream
func (p *Peer) lookupDownstream(whichAsync int) *discoverd.Instance { async := p.Info().State.Async if whichAsync == len(async)-1 { return nil } return async[whichAsync+1] }
go
func (p *Peer) lookupDownstream(whichAsync int) *discoverd.Instance { async := p.Info().State.Async if whichAsync == len(async)-1 { return nil } return async[whichAsync+1] }
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// Return the downstream peer for a given one of the async peers
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/sirenia/state/state.go#L1108-L1114
train
flynn/flynn
pkg/sirenia/state/state.go
peerIsPresent
func (p *Peer) peerIsPresent(other *discoverd.Instance) bool { // We should never even be asking whether we're present. If we need to do // this at some point in the future, we need to consider we should always // consider ourselves present or whether we should check the list. if other.Meta[p.idKey] == p.id { pan...
go
func (p *Peer) peerIsPresent(other *discoverd.Instance) bool { // We should never even be asking whether we're present. If we need to do // this at some point in the future, we need to consider we should always // consider ourselves present or whether we should check the list. if other.Meta[p.idKey] == p.id { pan...
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// Returns true if the given other peer appears to be present in the most // recently received list of present peers.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/sirenia/state/state.go#L1118-L1132
train
flynn/flynn
router/proxy/reverseproxy.go
NewReverseProxy
func NewReverseProxy(bf BackendListFunc, stickyKey *[32]byte, sticky bool, rt RequestTracker, l log15.Logger) *ReverseProxy { return &ReverseProxy{ transport: &transport{ getBackends: bf, stickyCookieKey: stickyKey, useStickySessions: sticky, }, FlushInterval: 10 * time.Millisecond, RequestTr...
go
func NewReverseProxy(bf BackendListFunc, stickyKey *[32]byte, sticky bool, rt RequestTracker, l log15.Logger) *ReverseProxy { return &ReverseProxy{ transport: &transport{ getBackends: bf, stickyCookieKey: stickyKey, useStickySessions: sticky, }, FlushInterval: 10 * time.Millisecond, RequestTr...
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// NewReverseProxy initializes a new ReverseProxy with a callback to get // backends, a stickyKey for encrypting sticky session cookies, and a flag // sticky to enable sticky sessions.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/router/proxy/reverseproxy.go#L71-L82
train
flynn/flynn
router/proxy/reverseproxy.go
ServeConn
func (p *ReverseProxy) ServeConn(ctx context.Context, dconn net.Conn) { transport := p.transport if transport == nil { panic("router: nil transport for proxy") } defer dconn.Close() clientGone := dconn.(http.CloseNotifier).CloseNotify() ctx, cancel := context.WithCancel(ctx) defer cancel() // finish cancellat...
go
func (p *ReverseProxy) ServeConn(ctx context.Context, dconn net.Conn) { transport := p.transport if transport == nil { panic("router: nil transport for proxy") } defer dconn.Close() clientGone := dconn.(http.CloseNotifier).CloseNotify() ctx, cancel := context.WithCancel(ctx) defer cancel() // finish cancellat...
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// ServeConn takes an inbound conn and proxies it to a backend.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/router/proxy/reverseproxy.go#L162-L190
train
flynn/flynn
discoverd/deployment/deployment.go
update
func (d *Deployment) update() error { select { case event, ok := <-d.events: if !ok { return fmt.Errorf("service stream closed unexpectedly: %s", d.stream.Err()) } if event.Kind == discoverd.EventKindServiceMeta { d.meta = event.ServiceMeta } default: } return nil }
go
func (d *Deployment) update() error { select { case event, ok := <-d.events: if !ok { return fmt.Errorf("service stream closed unexpectedly: %s", d.stream.Err()) } if event.Kind == discoverd.EventKindServiceMeta { d.meta = event.ServiceMeta } default: } return nil }
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// update drains any pending events, updating the service metadata, it doesn't block.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/discoverd/deployment/deployment.go#L71-L83
train
flynn/flynn
discoverd/deployment/deployment.go
MarkDone
func (d *Deployment) MarkDone(addr string) error { return attempts.Run(func() error { if err := d.update(); err != nil { return err } deploymentMeta, err := d.decode(d.meta) if err != nil { return err } deploymentMeta.States[addr] = DeploymentStateDone return d.set(d.meta, deploymentMeta) }) }
go
func (d *Deployment) MarkDone(addr string) error { return attempts.Run(func() error { if err := d.update(); err != nil { return err } deploymentMeta, err := d.decode(d.meta) if err != nil { return err } deploymentMeta.States[addr] = DeploymentStateDone return d.set(d.meta, deploymentMeta) }) }
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// MarkDone marks the addr as done in the service metadata
[ "MarkDone", "marks", "the", "addr", "as", "done", "in", "the", "service", "metadata" ]
b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/discoverd/deployment/deployment.go#L169-L184
train
flynn/flynn
discoverd/deployment/deployment.go
Wait
func (d *Deployment) Wait(id string, timeout time.Duration, log log15.Logger) error { timeoutCh := time.After(timeout) for { actual := 0 select { case event, ok := <-d.events: if !ok { return fmt.Errorf("service stream closed unexpectedly: %s", d.stream.Err()) } if event.Kind == discoverd.EventKind...
go
func (d *Deployment) Wait(id string, timeout time.Duration, log log15.Logger) error { timeoutCh := time.After(timeout) for { actual := 0 select { case event, ok := <-d.events: if !ok { return fmt.Errorf("service stream closed unexpectedly: %s", d.stream.Err()) } if event.Kind == discoverd.EventKind...
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// Wait waits for an expected number of "done" addresses in the service metadata
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/discoverd/deployment/deployment.go#L187-L221
train
flynn/flynn
discoverd/deployment/deployment.go
Create
func (d *Deployment) Create(id string) error { return attempts.Run(func() error { if err := d.set(&discoverd.ServiceMeta{}, NewDeploymentMeta(id)); err == nil { return nil } if err := d.update(); err != nil { return err } return d.set(d.meta, NewDeploymentMeta(id)) }) }
go
func (d *Deployment) Create(id string) error { return attempts.Run(func() error { if err := d.set(&discoverd.ServiceMeta{}, NewDeploymentMeta(id)); err == nil { return nil } if err := d.update(); err != nil { return err } return d.set(d.meta, NewDeploymentMeta(id)) }) }
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// Create starts a new deployment with a given ID
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/discoverd/deployment/deployment.go#L224-L234
train
flynn/flynn
pkg/cluster/attach.go
Attach
func (c *Host) Attach(req *host.AttachReq, wait bool) (AttachClient, error) { rwc, err := c.c.Hijack("POST", "/attach", http.Header{"Upgrade": {"flynn-attach/0"}}, req) if err != nil { return nil, err } attachState := make([]byte, 1) if _, err := rwc.Read(attachState); err != nil { rwc.Close() return nil, e...
go
func (c *Host) Attach(req *host.AttachReq, wait bool) (AttachClient, error) { rwc, err := c.c.Hijack("POST", "/attach", http.Header{"Upgrade": {"flynn-attach/0"}}, req) if err != nil { return nil, err } attachState := make([]byte, 1) if _, err := rwc.Read(attachState); err != nil { rwc.Close() return nil, e...
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// Attach attaches to the job specified in req and returns an attach client. If // wait is true, the client will wait for the job to start before returning the // first bytes. If wait is false and the job is not running, ErrWouldWait is // returned.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/cluster/attach.go#L24-L85
train
flynn/flynn
pkg/cluster/attach.go
NewAttachClient
func NewAttachClient(conn io.ReadWriteCloser) AttachClient { return &attachClient{conn: conn, w: bufio.NewWriter(conn)} }
go
func NewAttachClient(conn io.ReadWriteCloser) AttachClient { return &attachClient{conn: conn, w: bufio.NewWriter(conn)} }
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// NewAttachClient wraps conn in an implementation of AttachClient.
[ "NewAttachClient", "wraps", "conn", "in", "an", "implementation", "of", "AttachClient", "." ]
b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/cluster/attach.go#L88-L90
train
flynn/flynn
pkg/pinned/pinned.go
Dial
func (c *Config) Dial(network, addr string) (net.Conn, error) { var conf tls.Config if c.Config != nil { conf = *c.Config } conf.InsecureSkipVerify = true cn, err := dialer.Retry.Dial(network, addr) if err != nil { return nil, err } conn := Conn{ Conn: tls.Client(cn, &conf), Wire: cn, } if conf.Ser...
go
func (c *Config) Dial(network, addr string) (net.Conn, error) { var conf tls.Config if c.Config != nil { conf = *c.Config } conf.InsecureSkipVerify = true cn, err := dialer.Retry.Dial(network, addr) if err != nil { return nil, err } conn := Conn{ Conn: tls.Client(cn, &conf), Wire: cn, } if conf.Ser...
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// Dial establishes a TLS connection to addr and checks the peer leaf // certificate against the configured pin. The underlying type of the returned // net.Conn is a Conn.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/pinned/pinned.go#L36-L74
train
flynn/flynn
pkg/pinned/pinned.go
CloseWrite
func (c Conn) CloseWrite() error { if cw, ok := c.Wire.(interface { CloseWrite() error }); ok { return cw.CloseWrite() } return errors.New("pinned: underlying connection does not support CloseWrite") }
go
func (c Conn) CloseWrite() error { if cw, ok := c.Wire.(interface { CloseWrite() error }); ok { return cw.CloseWrite() } return errors.New("pinned: underlying connection does not support CloseWrite") }
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// CloseWrite shuts down the writing side of the connection.
[ "CloseWrite", "shuts", "down", "the", "writing", "side", "of", "the", "connection", "." ]
b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/pinned/pinned.go#L86-L93
train
flynn/flynn
discoverd/client/client.go
currentPin
func (c *Client) currentPin() (string, string) { c.mu.RLock() defer c.mu.RUnlock() return c.leader, c.pinned }
go
func (c *Client) currentPin() (string, string) { c.mu.RLock() defer c.mu.RUnlock() return c.leader, c.pinned }
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// Retrieves current pin value
[ "Retrieves", "current", "pin", "value" ]
b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/discoverd/client/client.go#L132-L136
train
flynn/flynn
discoverd/client/client.go
updatePin
func (c *Client) updatePin(new string) { c.mu.Lock() defer c.mu.Unlock() c.pinned = new }
go
func (c *Client) updatePin(new string) { c.mu.Lock() defer c.mu.Unlock() c.pinned = new }
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// Update the currently pinned server
[ "Update", "the", "currently", "pinned", "server" ]
b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/discoverd/client/client.go#L139-L143
train
flynn/flynn
discoverd/client/client.go
updateServers
func (c *Client) updateServers(servers []string, idx uint64) { c.mu.Lock() defer c.mu.Unlock() // If the new index isn't greater than the current index then ignore // changes to the peer list. Prevents out of order request handling // nuking a more recent version of the peer list. if idx < c.idx { return } c...
go
func (c *Client) updateServers(servers []string, idx uint64) { c.mu.Lock() defer c.mu.Unlock() // If the new index isn't greater than the current index then ignore // changes to the peer list. Prevents out of order request handling // nuking a more recent version of the peer list. if idx < c.idx { return } c...
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// Updates the list of peers
[ "Updates", "the", "list", "of", "peers" ]
b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/discoverd/client/client.go#L146-L179
train
flynn/flynn
pkg/keepalive/reuseport.go
ReusableListen
func ReusableListen(proto, addr string) (net.Listener, error) { backlogOnce.Do(func() { backlog = maxListenerBacklog() }) saddr, typ, err := sockaddr(proto, addr) if err != nil { return nil, err } fd, err := syscall.Socket(typ, syscall.SOCK_STREAM, syscall.IPPROTO_TCP) if err != nil { return nil, err } ...
go
func ReusableListen(proto, addr string) (net.Listener, error) { backlogOnce.Do(func() { backlog = maxListenerBacklog() }) saddr, typ, err := sockaddr(proto, addr) if err != nil { return nil, err } fd, err := syscall.Socket(typ, syscall.SOCK_STREAM, syscall.IPPROTO_TCP) if err != nil { return nil, err } ...
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// ReusableListen returns a TCP listener with SO_REUSEPORT and keepalives // enabled.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/keepalive/reuseport.go#L19-L58
train
flynn/flynn
router/client/client.go
NewWithAddr
func NewWithAddr(addr string) Client { c := newRouterClient() c.URL = fmt.Sprintf("http://%s", addr) return c }
go
func NewWithAddr(addr string) Client { c := newRouterClient() c.URL = fmt.Sprintf("http://%s", addr) return c }
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// NewWithAddr uses addr as the specified API url and returns a client.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/router/client/client.go#L46-L50
train
flynn/flynn
appliance/redis/process.go
NewProcess
func NewProcess() *Process { p := &Process{ Port: DefaultPort, BinDir: DefaultBinDir, DataDir: DefaultDataDir, Password: DefaultPassword, OpTimeout: DefaultOpTimeout, ReplTimeout: DefaultReplTimeout, Logger: log15.New("app", "redis"), } p.stopping.Store(false) return p }
go
func NewProcess() *Process { p := &Process{ Port: DefaultPort, BinDir: DefaultBinDir, DataDir: DefaultDataDir, Password: DefaultPassword, OpTimeout: DefaultOpTimeout, ReplTimeout: DefaultReplTimeout, Logger: log15.New("app", "redis"), } p.stopping.Store(false) return p }
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// NewProcess returns a new instance of Process with defaults.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/appliance/redis/process.go#L70-L82
train
flynn/flynn
appliance/redis/process.go
Start
func (p *Process) Start() error { p.mtx.Lock() defer p.mtx.Unlock() // Valdiate that process is not already running and that we have a config. if p.running { return ErrRunning } return p.start() }
go
func (p *Process) Start() error { p.mtx.Lock() defer p.mtx.Unlock() // Valdiate that process is not already running and that we have a config. if p.running { return ErrRunning } return p.start() }
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// Start begins the process. // Returns an error if the process is already running.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/appliance/redis/process.go#L89-L98
train
flynn/flynn
appliance/redis/process.go
Stop
func (p *Process) Stop() error { p.mtx.Lock() defer p.mtx.Unlock() if !p.running { return ErrStopped } return p.stop() }
go
func (p *Process) Stop() error { p.mtx.Lock() defer p.mtx.Unlock() if !p.running { return ErrStopped } return p.stop() }
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// Stop attempts to gracefully stop the process. If the process cannot be // stopped gracefully then it is forcefully stopped. Returns an error if the // process is already stopped.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/appliance/redis/process.go#L142-L150
train
flynn/flynn
appliance/redis/process.go
monitorCmd
func (p *Process) monitorCmd(cmd *exec.Cmd, stopped chan struct{}) { err := cmd.Wait() if !p.stopping.Load().(bool) { p.Logger.Error("unexpectedly exit", "err", err) shutdown.ExitWithCode(1) } close(stopped) }
go
func (p *Process) monitorCmd(cmd *exec.Cmd, stopped chan struct{}) { err := cmd.Wait() if !p.stopping.Load().(bool) { p.Logger.Error("unexpectedly exit", "err", err) shutdown.ExitWithCode(1) } close(stopped) }
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// monitorCmd waits for cmd to finish and reports an error if it was unexpected. // Also closes the stopped channel to notify other listeners that it has finished.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/appliance/redis/process.go#L179-L186
train
flynn/flynn
appliance/redis/process.go
writeConfig
func (p *Process) writeConfig() error { logger := p.Logger.New("fn", "writeConfig") logger.Info("writing") // Create parent directory if it doesn't exist. if err := os.MkdirAll(filepath.Dir(p.ConfigPath()), 0777); err != nil { logger.Error("cannot create config parent directory", "err", err) return err } f,...
go
func (p *Process) writeConfig() error { logger := p.Logger.New("fn", "writeConfig") logger.Info("writing") // Create parent directory if it doesn't exist. if err := os.MkdirAll(filepath.Dir(p.ConfigPath()), 0777); err != nil { logger.Error("cannot create config parent directory", "err", err) return err } f,...
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// writeConfig generates a new redis.conf at the config path.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/appliance/redis/process.go#L189-L212
train
flynn/flynn
appliance/redis/process.go
Info
func (p *Process) Info() (*ProcessInfo, error) { p.mtx.Lock() defer p.mtx.Unlock() return &ProcessInfo{Running: p.running}, nil }
go
func (p *Process) Info() (*ProcessInfo, error) { p.mtx.Lock() defer p.mtx.Unlock() return &ProcessInfo{Running: p.running}, nil }
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// Info returns information about the process.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/appliance/redis/process.go#L215-L219
train
flynn/flynn
appliance/redis/process.go
ping
func (p *Process) ping(addr string, timeout time.Duration) error { // Default to local process if addr not specified. if addr == "" { addr = fmt.Sprintf("localhost:%s", p.Port) } logger := p.Logger.New("fn", "ping", "addr", addr, "timeout", timeout) logger.Info("sending") timer := time.NewTimer(timeout) defe...
go
func (p *Process) ping(addr string, timeout time.Duration) error { // Default to local process if addr not specified. if addr == "" { addr = fmt.Sprintf("localhost:%s", p.Port) } logger := p.Logger.New("fn", "ping", "addr", addr, "timeout", timeout) logger.Info("sending") timer := time.NewTimer(timeout) defe...
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// ping executes a PING command against addr until timeout occurs.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/appliance/redis/process.go#L227-L277
train
flynn/flynn
appliance/redis/process.go
pingWait
func (p *Process) pingWait(addr string, timeout time.Duration) error { // Default to local process if addr not specified. if addr == "" { addr = fmt.Sprintf("localhost:%s", p.Port) } logger := p.Logger.New("fn", "pingWait", "addr", addr, "timeout", timeout) ticker := time.NewTicker(checkInterval) defer ticker...
go
func (p *Process) pingWait(addr string, timeout time.Duration) error { // Default to local process if addr not specified. if addr == "" { addr = fmt.Sprintf("localhost:%s", p.Port) } logger := p.Logger.New("fn", "pingWait", "addr", addr, "timeout", timeout) ticker := time.NewTicker(checkInterval) defer ticker...
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// pingWait continually pings a server until successful response or timeout.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/appliance/redis/process.go#L280-L308
train
flynn/flynn
appliance/redis/process.go
Restore
func (p *Process) Restore(r io.Reader) error { p.mtx.Lock() defer p.mtx.Unlock() logger := p.Logger.New("fn", "Restore") logger.Info("begin restore") // Stop if running. if p.running { logger.Info("stopping process") if err := p.stop(); err != nil { logger.Error("error stopping process", "err", err) r...
go
func (p *Process) Restore(r io.Reader) error { p.mtx.Lock() defer p.mtx.Unlock() logger := p.Logger.New("fn", "Restore") logger.Info("begin restore") // Stop if running. if p.running { logger.Info("stopping process") if err := p.stop(); err != nil { logger.Error("error stopping process", "err", err) r...
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// Restore stops the process, copies an RDB from r, and restarts the process. // Redis automatically handles recovery when there's a dump.rdb file present.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/appliance/redis/process.go#L312-L358
train
flynn/flynn
appliance/redis/process.go
RedisInfo
func (p *Process) RedisInfo(addr string, timeout time.Duration) (*RedisInfo, error) { // Default to local process if addr not specified. if addr == "" { addr = fmt.Sprintf("localhost:%s", p.Port) } logger := p.Logger.New("fn", "replInfo", "addr", addr) logger.Info("sending INFO") // Connect to the redis serve...
go
func (p *Process) RedisInfo(addr string, timeout time.Duration) (*RedisInfo, error) { // Default to local process if addr not specified. if addr == "" { addr = fmt.Sprintf("localhost:%s", p.Port) } logger := p.Logger.New("fn", "replInfo", "addr", addr) logger.Info("sending INFO") // Connect to the redis serve...
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// RedisInfo executes an INFO command against a Redis server and returns the results.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/appliance/redis/process.go#L361-L405
train
flynn/flynn
appliance/redis/process.go
ParseRedisInfo
func ParseRedisInfo(s string) (*RedisInfo, error) { var info RedisInfo scanner := bufio.NewScanner(strings.NewReader(s)) for scanner.Scan() { line := scanner.Text() // Skip blank lines & comment lines if strings.HasPrefix(line, "#") || line == "" { continue } // Split into key/value. a := strings.S...
go
func ParseRedisInfo(s string) (*RedisInfo, error) { var info RedisInfo scanner := bufio.NewScanner(strings.NewReader(s)) for scanner.Scan() { line := scanner.Text() // Skip blank lines & comment lines if strings.HasPrefix(line, "#") || line == "" { continue } // Split into key/value. a := strings.S...
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// ParseRedisInfo parses the response from an INFO command.
[ "ParseRedisInfo", "parses", "the", "response", "from", "an", "INFO", "command", "." ]
b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/appliance/redis/process.go#L426-L474
train
flynn/flynn
appliance/redis/process.go
atoi
func atoi(s string) int { i, _ := strconv.Atoi(s) return i }
go
func atoi(s string) int { i, _ := strconv.Atoi(s) return i }
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// atoi returns the parsed integer value of s. Returns zero if a parse error occurs.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/appliance/redis/process.go#L490-L493
train
flynn/flynn
gitreceive/receiver/flynn-receive.go
needsDefaultScale
func needsDefaultScale(appID, prevReleaseID string, procs map[string]ct.ProcessType, client controller.Client) bool { if _, ok := procs["web"]; !ok { return false } if prevReleaseID == "" { return true } _, err := client.GetFormation(appID, prevReleaseID) return err == controller.ErrNotFound }
go
func needsDefaultScale(appID, prevReleaseID string, procs map[string]ct.ProcessType, client controller.Client) bool { if _, ok := procs["web"]; !ok { return false } if prevReleaseID == "" { return true } _, err := client.GetFormation(appID, prevReleaseID) return err == controller.ErrNotFound }
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// needsDefaultScale indicates whether a release needs a default scale based on // whether it has a web process type and either has no previous release or no // previous scale.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/gitreceive/receiver/flynn-receive.go#L269-L278
train
flynn/flynn
host/update.go
setEnv
func setEnv(cmd *exec.Cmd, envs map[string]string) { env := os.Environ() cmd.Env = make([]string, 0, len(env)+len(envs)) outer: for _, e := range env { for k := range envs { if strings.HasPrefix(e, k+"=") { continue outer } } cmd.Env = append(cmd.Env, e) } for k, v := range envs { cmd.Env = appen...
go
func setEnv(cmd *exec.Cmd, envs map[string]string) { env := os.Environ() cmd.Env = make([]string, 0, len(env)+len(envs)) outer: for _, e := range env { for k := range envs { if strings.HasPrefix(e, k+"=") { continue outer } } cmd.Env = append(cmd.Env, e) } for k, v := range envs { cmd.Env = appen...
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// setEnv sets the given environment variables for the command, ensuring they // are only set once.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/host/update.go#L183-L198
train
flynn/flynn
host/update.go
Resume
func (c *Child) Resume(buffers host.LogBuffers) error { if buffers == nil { buffers = host.LogBuffers{} } data, err := json.Marshal(buffers) if err != nil { return err } if _, err := syscall.Write(c.sock, append(ControlMsgResume, data...)); err != nil { return err } msg := make([]byte, len(ControlMsgOK)) ...
go
func (c *Child) Resume(buffers host.LogBuffers) error { if buffers == nil { buffers = host.LogBuffers{} } data, err := json.Marshal(buffers) if err != nil { return err } if _, err := syscall.Write(c.sock, append(ControlMsgResume, data...)); err != nil { return err } msg := make([]byte, len(ControlMsgOK)) ...
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// Resume writes ControlMsgResume to the control socket and waits for a // ControlMsgOK response
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/host/update.go#L216-L235
train
flynn/flynn
pkg/cluster/client.go
Host
func (c *Client) Host(id string) (*Host, error) { hosts, err := c.Hosts() if err != nil { return nil, err } for _, h := range hosts { if h.ID() == id { return h, nil } } return nil, fmt.Errorf("cluster: unknown host %q", id) }
go
func (c *Client) Host(id string) (*Host, error) { hosts, err := c.Hosts() if err != nil { return nil, err } for _, h := range hosts { if h.ID() == id { return h, nil } } return nil, fmt.Errorf("cluster: unknown host %q", id) }
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// Host returns the host identified by id.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/cluster/client.go#L54-L65
train
flynn/flynn
pkg/cluster/client.go
Hosts
func (c *Client) Hosts() ([]*Host, error) { insts, err := c.s.Instances() if err != nil { return nil, err } hosts := make([]*Host, len(insts)) for i, inst := range insts { hosts[i] = NewHost( inst.Meta["id"], inst.Addr, c.h, HostTagsFromMeta(inst.Meta), ) } return hosts, nil }
go
func (c *Client) Hosts() ([]*Host, error) { insts, err := c.s.Instances() if err != nil { return nil, err } hosts := make([]*Host, len(insts)) for i, inst := range insts { hosts[i] = NewHost( inst.Meta["id"], inst.Addr, c.h, HostTagsFromMeta(inst.Meta), ) } return hosts, nil }
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// Hosts returns a list of hosts in the cluster.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/cluster/client.go#L68-L83
train
flynn/flynn
host/types/types.go
Merge
func (x ContainerConfig) Merge(y ContainerConfig) ContainerConfig { x.TTY = x.TTY || y.TTY x.Stdin = x.Stdin || y.Stdin x.Data = x.Data || y.Data if y.Args != nil { x.Args = y.Args } env := make(map[string]string, len(x.Env)+len(y.Env)) for k, v := range x.Env { env[k] = v } for k, v := range y.Env { env...
go
func (x ContainerConfig) Merge(y ContainerConfig) ContainerConfig { x.TTY = x.TTY || y.TTY x.Stdin = x.Stdin || y.Stdin x.Data = x.Data || y.Data if y.Args != nil { x.Args = y.Args } env := make(map[string]string, len(x.Env)+len(y.Env)) for k, v := range x.Env { env[k] = v } for k, v := range y.Env { env...
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// Apply 'y' to 'x', returning a new structure. 'y' trumps.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/host/types/types.go#L122-L161
train
flynn/flynn
pkg/cliutil/json.go
DecodeJSONArg
func DecodeJSONArg(name string, v interface{}) error { var src io.Reader = os.Stdin if name != "-" && name != "" { f, err := os.Open(name) if err != nil { return err } defer f.Close() src = f } return json.NewDecoder(src).Decode(v) }
go
func DecodeJSONArg(name string, v interface{}) error { var src io.Reader = os.Stdin if name != "-" && name != "" { f, err := os.Open(name) if err != nil { return err } defer f.Close() src = f } return json.NewDecoder(src).Decode(v) }
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// DecodeJSONArg decodes JSON into v from a file named name, if name is empty or // "-", stdin is used.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/cliutil/json.go#L11-L22
train
flynn/flynn
host/volume/manager/manager.go
LockDB
func (m *Manager) LockDB() error { m.dbMtx.RLock() if m.db == nil { m.dbMtx.RUnlock() return ErrDBClosed } return nil }
go
func (m *Manager) LockDB() error { m.dbMtx.RLock() if m.db == nil { m.dbMtx.RUnlock() return ErrDBClosed } return nil }
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// LockDB acquires a read lock on the DB mutex so that it cannot be closed // until the caller has finished performing actions which will lead to changes // being persisted to the DB. // // For example, creating a volume first delegates to the provider to create the // volume and then persists to the DB, but if the DB ...
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/host/volume/manager/manager.go#L126-L133
train
flynn/flynn
host/volume/manager/manager.go
persistVolume
func (m *Manager) persistVolume(tx *bolt.Tx, vol volume.Volume) error { // Save the general volume info volumesBucket := tx.Bucket([]byte("volumes")) id := vol.Info().ID k := []byte(id) _, volExists := m.volumes[id] if !volExists { volumesBucket.Delete(k) } else { b, err := json.Marshal(vol.Info()) if err ...
go
func (m *Manager) persistVolume(tx *bolt.Tx, vol volume.Volume) error { // Save the general volume info volumesBucket := tx.Bucket([]byte("volumes")) id := vol.Info().ID k := []byte(id) _, volExists := m.volumes[id] if !volExists { volumesBucket.Delete(k) } else { b, err := json.Marshal(vol.Info()) if err ...
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// Called to sync changes to disk when a volume is updated
[ "Called", "to", "sync", "changes", "to", "disk", "when", "a", "volume", "is", "updated" ]
b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/host/volume/manager/manager.go#L488-L526
train
flynn/flynn
flannel/backend/vxlan/device.go
setAddr4
func setAddr4(link *netlink.Vxlan, ipn *net.IPNet) error { addrs, err := netlink.AddrList(link, syscall.AF_INET) if err != nil { return err } addr := netlink.Addr{IPNet: ipn} existing := false for _, old := range addrs { if old.IPNet.String() == addr.IPNet.String() { existing = true continue } if e...
go
func setAddr4(link *netlink.Vxlan, ipn *net.IPNet) error { addrs, err := netlink.AddrList(link, syscall.AF_INET) if err != nil { return err } addr := netlink.Addr{IPNet: ipn} existing := false for _, old := range addrs { if old.IPNet.String() == addr.IPNet.String() { existing = true continue } if e...
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// sets IP4 addr on link removing any existing ones first
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/flannel/backend/vxlan/device.go#L231-L256
train
flynn/flynn
pkg/syslog/rfc5424/parser.go
Parse
func Parse(buf []byte) (*Message, error) { msg := &Message{} return msg, parse(buf, msg) }
go
func Parse(buf []byte) (*Message, error) { msg := &Message{} return msg, parse(buf, msg) }
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// Parse parses RFC5424 syslog messages into a Message.
[ "Parse", "parses", "RFC5424", "syslog", "messages", "into", "a", "Message", "." ]
b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/syslog/rfc5424/parser.go#L10-L13
train
flynn/flynn
logaggregator/buffer/buffer.go
Add
func (b *Buffer) Add(m *rfc5424.Message) error { b.mu.Lock() defer b.mu.Unlock() if b.length == -1 { return errors.New("buffer closed") } if b.head == nil { b.head = &message{Message: *m} b.tail = b.head } else { // iterate from newest to oldest through messages to find position // to insert new messag...
go
func (b *Buffer) Add(m *rfc5424.Message) error { b.mu.Lock() defer b.mu.Unlock() if b.length == -1 { return errors.New("buffer closed") } if b.head == nil { b.head = &message{Message: *m} b.tail = b.head } else { // iterate from newest to oldest through messages to find position // to insert new messag...
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// Add adds an element to the Buffer. If the Buffer is already full, it removes // an existing message.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/logaggregator/buffer/buffer.go#L50-L108
train
flynn/flynn
logaggregator/buffer/buffer.go
Read
func (b *Buffer) Read() []*rfc5424.Message { b.mu.RLock() defer b.mu.RUnlock() return b.read() }
go
func (b *Buffer) Read() []*rfc5424.Message { b.mu.RLock() defer b.mu.RUnlock() return b.read() }
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// Read returns a copied slice with the contents of the Buffer. It does not // modify the underlying buffer in any way. You are free to modify the // returned slice without affecting Buffer, though modifying the individual // elements in the result will also modify those elements in the Buffer.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/logaggregator/buffer/buffer.go#L124-L128
train
flynn/flynn
logaggregator/buffer/buffer.go
ReadAndSubscribe
func (b *Buffer) ReadAndSubscribe(msgc chan<- *rfc5424.Message, donec <-chan struct{}) []*rfc5424.Message { b.mu.RLock() defer b.mu.RUnlock() b.subscribe(msgc, donec) return b.read() }
go
func (b *Buffer) ReadAndSubscribe(msgc chan<- *rfc5424.Message, donec <-chan struct{}) []*rfc5424.Message { b.mu.RLock() defer b.mu.RUnlock() b.subscribe(msgc, donec) return b.read() }
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// ReadAndSubscribe returns all buffered messages just like Read, and also // returns a channel that will stream new messages as they arrive.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/logaggregator/buffer/buffer.go#L132-L138
train
flynn/flynn
logaggregator/buffer/buffer.go
Subscribe
func (b *Buffer) Subscribe(msgc chan<- *rfc5424.Message, donec <-chan struct{}) { b.mu.RLock() defer b.mu.RUnlock() b.subscribe(msgc, donec) }
go
func (b *Buffer) Subscribe(msgc chan<- *rfc5424.Message, donec <-chan struct{}) { b.mu.RLock() defer b.mu.RUnlock() b.subscribe(msgc, donec) }
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// Subscribe returns a channel that sends all future messages added to the // Buffer. The returned channel is buffered, and any attempts to send new // messages to the channel will drop messages if the channel is full. // // The caller closes the donec channel to stop receiving messages.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/logaggregator/buffer/buffer.go#L145-L150
train
flynn/flynn
logaggregator/buffer/buffer.go
read
func (b *Buffer) read() []*rfc5424.Message { if b.length == -1 { return nil } buf := make([]*rfc5424.Message, 0, b.length) msg := b.head for msg != nil { buf = append(buf, &msg.Message) msg = msg.next } return buf }
go
func (b *Buffer) read() []*rfc5424.Message { if b.length == -1 { return nil } buf := make([]*rfc5424.Message, 0, b.length) msg := b.head for msg != nil { buf = append(buf, &msg.Message) msg = msg.next } return buf }
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// _read expects b.mu to already be locked
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/logaggregator/buffer/buffer.go#L153-L165
train
flynn/flynn
logaggregator/buffer/buffer.go
subscribe
func (b *Buffer) subscribe(msgc chan<- *rfc5424.Message, donec <-chan struct{}) { b.subs[msgc] = struct{}{} go func() { select { case <-donec: case <-b.donec: } b.mu.Lock() defer b.mu.Unlock() delete(b.subs, msgc) close(msgc) }() }
go
func (b *Buffer) subscribe(msgc chan<- *rfc5424.Message, donec <-chan struct{}) { b.subs[msgc] = struct{}{} go func() { select { case <-donec: case <-b.donec: } b.mu.Lock() defer b.mu.Unlock() delete(b.subs, msgc) close(msgc) }() }
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// _subscribe assumes b.mu is already locked
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/logaggregator/buffer/buffer.go#L168-L183
train
flynn/flynn
controller/client/client.go
NewClient
func NewClient(uri, key string) (Client, error) { return NewClientWithHTTP(uri, key, httphelper.RetryClient) }
go
func NewClient(uri, key string) (Client, error) { return NewClientWithHTTP(uri, key, httphelper.RetryClient) }
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// NewClient creates a new Client pointing at uri and using key for // authentication.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/client/client.go#L130-L132
train
flynn/flynn
controller/client/client.go
NewClientWithConfig
func NewClientWithConfig(uri, key string, config Config) (Client, error) { if config.Pin == nil { return NewClient(uri, key) } d := &pinned.Config{Pin: config.Pin} if config.Domain != "" { d.Config = &tls.Config{ServerName: config.Domain} } httpClient := &http.Client{Transport: &http.Transport{DialTLS: d.Dial...
go
func NewClientWithConfig(uri, key string, config Config) (Client, error) { if config.Pin == nil { return NewClient(uri, key) } d := &pinned.Config{Pin: config.Pin} if config.Domain != "" { d.Config = &tls.Config{ServerName: config.Domain} } httpClient := &http.Client{Transport: &http.Transport{DialTLS: d.Dial...
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// NewClientWithConfig acts like NewClient, but supports custom configuration.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/client/client.go#L146-L159
train
flynn/flynn
pkg/rpcplus/jsonrpc/server.go
NewServerCodec
func NewServerCodec(conn io.ReadWriteCloser) rpc.ServerCodec { return &serverCodec{ dec: json.NewDecoder(conn), enc: json.NewEncoder(conn), c: conn, pending: make(map[uint64]*json.RawMessage), } }
go
func NewServerCodec(conn io.ReadWriteCloser) rpc.ServerCodec { return &serverCodec{ dec: json.NewDecoder(conn), enc: json.NewEncoder(conn), c: conn, pending: make(map[uint64]*json.RawMessage), } }
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// NewServerCodec returns a new rpc.ServerCodec using JSON-RPC on conn.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/rpcplus/jsonrpc/server.go#L36-L43
train
flynn/flynn
pkg/rpcplus/jsonrpc/server.go
ServeConnWithContext
func ServeConnWithContext(conn io.ReadWriteCloser, context interface{}) { rpc.ServeCodecWithContext(NewServerCodec(conn), context) }
go
func ServeConnWithContext(conn io.ReadWriteCloser, context interface{}) { rpc.ServeCodecWithContext(NewServerCodec(conn), context) }
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// ServeConnWithContext is like ServeConn but it allows to pass a // connection context to the RPC methods.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/rpcplus/jsonrpc/server.go#L142-L144
train
flynn/flynn
host/state.go
CloseDB
func (s *State) CloseDB() error { s.dbCond.L.Lock() defer s.dbCond.L.Unlock() if s.stateDB == nil { return nil } for s.dbUsers > 0 { s.dbCond.Wait() } if err := s.stateDB.Close(); err != nil { return err } s.stateDB = nil return nil }
go
func (s *State) CloseDB() error { s.dbCond.L.Lock() defer s.dbCond.L.Unlock() if s.stateDB == nil { return nil } for s.dbUsers > 0 { s.dbCond.Wait() } if err := s.stateDB.Close(); err != nil { return err } s.stateDB = nil return nil }
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// CloseDB closes the persistence DB, waiting for the state to be fully // released first.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/host/state.go#L199-L213
train
flynn/flynn
host/state.go
Acquire
func (s *State) Acquire() error { s.dbCond.L.Lock() defer s.dbCond.L.Unlock() if s.stateDB == nil { return ErrDBClosed } s.dbUsers++ return nil }
go
func (s *State) Acquire() error { s.dbCond.L.Lock() defer s.dbCond.L.Unlock() if s.stateDB == nil { return ErrDBClosed } s.dbUsers++ return nil }
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// Acquire acquires the state for use by incrementing s.dbUsers, which prevents // the state DB being closed until the caller has finished performing actions // which will lead to changes being persisted to the DB. // // For example, running a job starts the job and then persists the change of // state, but if the DB i...
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/host/state.go#L227-L235
train
flynn/flynn
host/state.go
Release
func (s *State) Release() { s.dbCond.L.Lock() defer s.dbCond.L.Unlock() s.dbUsers-- if s.dbUsers == 0 { s.dbCond.Broadcast() } }
go
func (s *State) Release() { s.dbCond.L.Lock() defer s.dbCond.L.Unlock() s.dbUsers-- if s.dbUsers == 0 { s.dbCond.Broadcast() } }
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// Release releases the state by decrementing s.dbUsers, broadcasting the // condition variable if no users are left to wake CloseDB.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/host/state.go#L239-L246
train
flynn/flynn
controller/utils/utils.go
GetEntrypoint
func GetEntrypoint(artifacts []*ct.Artifact, typ string) *ct.ImageEntrypoint { for i := len(artifacts) - 1; i >= 0; i-- { artifact := artifacts[i] if artifact.Type != ct.ArtifactTypeFlynn { continue } if e, ok := artifact.Manifest().Entrypoints[typ]; ok { return e } } for i := len(artifacts) - 1; i >...
go
func GetEntrypoint(artifacts []*ct.Artifact, typ string) *ct.ImageEntrypoint { for i := len(artifacts) - 1; i >= 0; i-- { artifact := artifacts[i] if artifact.Type != ct.ArtifactTypeFlynn { continue } if e, ok := artifact.Manifest().Entrypoints[typ]; ok { return e } } for i := len(artifacts) - 1; i >...
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// GetEntrypoint returns an image entrypoint for a process type from a list of // artifacts, first iterating through them and returning any entrypoint having // the exact type, then iterating through them and returning the artifact's // default entrypoint if it has one. // // The artifacts are traversed in reverse orde...
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/utils/utils.go#L106-L126
train
flynn/flynn
controller/utils/utils.go
SetupMountspecs
func SetupMountspecs(job *host.Job, artifacts []*ct.Artifact) { for _, artifact := range artifacts { if artifact.Type != ct.ArtifactTypeFlynn { continue } if len(artifact.Manifest().Rootfs) != 1 { continue } rootfs := artifact.Manifest().Rootfs[0] for _, layer := range rootfs.Layers { if layer.Typ...
go
func SetupMountspecs(job *host.Job, artifacts []*ct.Artifact) { for _, artifact := range artifacts { if artifact.Type != ct.ArtifactTypeFlynn { continue } if len(artifact.Manifest().Rootfs) != 1 { continue } rootfs := artifact.Manifest().Rootfs[0] for _, layer := range rootfs.Layers { if layer.Typ...
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// SetupMountspecs populates job.Mountspecs using the layers from a list of // Flynn image artifacts, expecting each artifact to have a single rootfs entry // containing squashfs layers
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/utils/utils.go#L131-L154
train
flynn/flynn
controller/scheduler/formation.go
IsScaleDownOf
func (p Processes) IsScaleDownOf(proc Processes) bool { for typ, count := range p { if count <= -proc[typ] { return true } } return false }
go
func (p Processes) IsScaleDownOf(proc Processes) bool { for typ, count := range p { if count <= -proc[typ] { return true } } return false }
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// IsScaleDownOf returns whether a diff is the complete scale down of any // process types in the given processes
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/scheduler/formation.go#L59-L66
train
flynn/flynn
controller/scheduler/formation.go
RectifyOmni
func (f *Formation) RectifyOmni(hostCount int) bool { changed := false for typ, proc := range f.Release.Processes { if proc.Omni && f.Processes != nil && f.Processes[typ] > 0 { count := f.OriginalProcesses[typ] * hostCount if f.Processes[typ] != count { f.Processes[typ] = count changed = true } }...
go
func (f *Formation) RectifyOmni(hostCount int) bool { changed := false for typ, proc := range f.Release.Processes { if proc.Omni && f.Processes != nil && f.Processes[typ] > 0 { count := f.OriginalProcesses[typ] * hostCount if f.Processes[typ] != count { f.Processes[typ] = count changed = true } }...
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// RectifyOmni updates the process counts for omni jobs by multiplying them by // the host count, returning whether or not any counts have changed
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/scheduler/formation.go#L90-L102
train
flynn/flynn
controller/scheduler/formation.go
Diff
func (f *Formation) Diff(running Processes) Processes { return Processes(f.Processes).Diff(running) }
go
func (f *Formation) Diff(running Processes) Processes { return Processes(f.Processes).Diff(running) }
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// Diff returns the diff between the given running processes and what is // expected to be running for the formation
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/scheduler/formation.go#L124-L126
train
flynn/flynn
host/cli/download.go
updateTUFClient
func updateTUFClient(client *tuf.Client) error { _, err := client.Update() if err == nil || tuf.IsLatestSnapshot(err) { return nil } if err == tuf.ErrNoRootKeys { if err := client.Init(tufconfig.RootKeys, len(tufconfig.RootKeys)); err != nil { return err } return updateTUFClient(client) } return err }
go
func updateTUFClient(client *tuf.Client) error { _, err := client.Update() if err == nil || tuf.IsLatestSnapshot(err) { return nil } if err == tuf.ErrNoRootKeys { if err := client.Init(tufconfig.RootKeys, len(tufconfig.RootKeys)); err != nil { return err } return updateTUFClient(client) } return err }
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// updateTUFClient updates the given client, initializing and re-running the // update if ErrNoRootKeys is returned.
[ "updateTUFClient", "updates", "the", "given", "client", "initializing", "and", "re", "-", "running", "the", "update", "if", "ErrNoRootKeys", "is", "returned", "." ]
b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/host/cli/download.go#L146-L158
train
flynn/flynn
controller/scheduler/job.go
Tags
func (j *Job) Tags() map[string]string { if j.Formation == nil { return nil } return j.Formation.Tags[j.Type] }
go
func (j *Job) Tags() map[string]string { if j.Formation == nil { return nil } return j.Formation.Tags[j.Type] }
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// Tags returns the tags for the job's process type from the formation
[ "Tags", "returns", "the", "tags", "for", "the", "job", "s", "process", "type", "from", "the", "formation" ]
b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/scheduler/job.go#L115-L120
train
flynn/flynn
controller/scheduler/job.go
TagsMatchHost
func (j *Job) TagsMatchHost(host *Host) bool { for k, v := range j.Tags() { if w, ok := host.Tags[k]; !ok || v != w { return false } } return true }
go
func (j *Job) TagsMatchHost(host *Host) bool { for k, v := range j.Tags() { if w, ok := host.Tags[k]; !ok || v != w { return false } } return true }
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// TagsMatchHost checks whether all of the job's tags match the corresponding // host's tags
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/scheduler/job.go#L124-L131
train
flynn/flynn
controller/scheduler/job.go
WithFormationAndType
func (j Jobs) WithFormationAndType(f *Formation, typ string) sortJobs { jobs := make(sortJobs, 0, len(j)) for _, job := range j { if job.Formation == f && job.Type == typ { jobs = append(jobs, job) } } jobs.Sort() return jobs }
go
func (j Jobs) WithFormationAndType(f *Formation, typ string) sortJobs { jobs := make(sortJobs, 0, len(j)) for _, job := range j { if job.Formation == f && job.Type == typ { jobs = append(jobs, job) } } jobs.Sort() return jobs }
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// WithFormationAndType returns a list of jobs which belong to the given // formation and have the given type, ordered with the most recently started // job first
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/scheduler/job.go#L211-L220
train
flynn/flynn
host/logmux/logmux.go
Follow
func (m *Mux) Follow(r io.ReadCloser, buffer string, msgID logagg.MsgID, config *Config) *LogStream { hdr := &rfc5424.Header{ Hostname: []byte(config.HostID), AppName: []byte(config.AppID), MsgID: []byte(msgID), } if config.JobType != "" { hdr.ProcID = []byte(config.JobType + "." + config.JobID) } else ...
go
func (m *Mux) Follow(r io.ReadCloser, buffer string, msgID logagg.MsgID, config *Config) *LogStream { hdr := &rfc5424.Header{ Hostname: []byte(config.HostID), AppName: []byte(config.AppID), MsgID: []byte(msgID), } if config.JobType != "" { hdr.ProcID = []byte(config.JobType + "." + config.JobID) } else ...
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// Follow starts a goroutine that reads log lines from the reader into the mux. // It runs until the reader is closed or an error occurs. If an error occurs, // the reader may still be open.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/host/logmux/logmux.go#L286-L333
train
flynn/flynn
host/logmux/logmux.go
jobDoneCh
func (m *Mux) jobDoneCh(jobID string, stop <-chan struct{}) <-chan struct{} { ch := make(chan struct{}) go func() { defer close(ch) var started chan struct{} m.jobsMtx.Lock() // check if there is already a WaitGroup wg, ok := m.jobWaits[jobID] if !ok { // if not, check if there is a channel to be notif...
go
func (m *Mux) jobDoneCh(jobID string, stop <-chan struct{}) <-chan struct{} { ch := make(chan struct{}) go func() { defer close(ch) var started chan struct{} m.jobsMtx.Lock() // check if there is already a WaitGroup wg, ok := m.jobWaits[jobID] if !ok { // if not, check if there is a channel to be notif...
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// jobDoneCh returns a channel that is closed when all of the streams we are // following from the job have been closed. It will never unblock if the job has // already finished.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/host/logmux/logmux.go#L407-L448
train
flynn/flynn
host/logmux/logmux.go
logFiles
func (m *Mux) logFiles(app string) (map[string][]string, error) { files, err := ioutil.ReadDir(m.logDir) if err != nil { return nil, err } res := make(map[string][]string) for _, f := range files { n := f.Name() if f.IsDir() || !strings.HasSuffix(n, ".log") || !appIDPrefixPattern.MatchString(n) || !strings....
go
func (m *Mux) logFiles(app string) (map[string][]string, error) { files, err := ioutil.ReadDir(m.logDir) if err != nil { return nil, err } res := make(map[string][]string) for _, f := range files { n := f.Name() if f.IsDir() || !strings.HasSuffix(n, ".log") || !appIDPrefixPattern.MatchString(n) || !strings....
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// logFiles returns a list of app IDs and the list of log file names associated // with them, from oldest to newest. There is always at least one file, the // current log for the app.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/host/logmux/logmux.go#L620-L637
train
flynn/flynn
host/logmux/logmux.go
Release
func (l *appLog) Release() { l.mtx.Lock() defer l.mtx.Unlock() l.refs-- if l.refs == 0 { // we're the last user, clean it up l.l.Close() l.m.appLogsMtx.Lock() delete(l.m.appLogs, l.appID) l.m.appLogsMtx.Unlock() } }
go
func (l *appLog) Release() { l.mtx.Lock() defer l.mtx.Unlock() l.refs-- if l.refs == 0 { // we're the last user, clean it up l.l.Close() l.m.appLogsMtx.Lock() delete(l.m.appLogs, l.appID) l.m.appLogsMtx.Unlock() } }
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// Release releases the app log, when the last job releases an app log, it is // closed.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/host/logmux/logmux.go#L684-L695
train
flynn/flynn
router/tree.go
Insert
func (n *node) Insert(path string, backend *httpRoute) { cur := n for part, i := slice(path, 0); ; part, i = slice(path, i) { if part != "" { child, _ := cur.children[part] if child == nil { // insert node if it doesn't exist child = &node{children: make(map[string]*node, 0)} cur.children[part] = ...
go
func (n *node) Insert(path string, backend *httpRoute) { cur := n for part, i := slice(path, 0); ; part, i = slice(path, i) { if part != "" { child, _ := cur.children[part] if child == nil { // insert node if it doesn't exist child = &node{children: make(map[string]*node, 0)} cur.children[part] = ...
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// insert a new route into the tree, replacing entry if it exists
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/router/tree.go#L20-L37
train
flynn/flynn
router/tree.go
Lookup
func (n *node) Lookup(path string) *httpRoute { cur := n prev := n for part, i := slice(path, 0); ; part, i = slice(path, i) { if part != "" { cur = cur.children[part] if cur == nil { // can't progress any deeper, return last backend we saw return prev.backend } if cur.backend != nil { prev...
go
func (n *node) Lookup(path string) *httpRoute { cur := n prev := n for part, i := slice(path, 0); ; part, i = slice(path, i) { if part != "" { cur = cur.children[part] if cur == nil { // can't progress any deeper, return last backend we saw return prev.backend } if cur.backend != nil { prev...
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// lookup returns the best match for a given path
[ "lookup", "returns", "the", "best", "match", "for", "a", "given", "path" ]
b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/router/tree.go#L40-L62
train
flynn/flynn
router/tree.go
slice
func slice(path string, start int) (segment string, next int) { if len(path) == 0 || start < 0 || start >= len(path) { return "", -1 } end := strings.IndexRune(path[start:], '/') if end == -1 { return path[start:], -1 } if path[start:start+end] == "/" { return "", start + end + 1 } return path[start : sta...
go
func slice(path string, start int) (segment string, next int) { if len(path) == 0 || start < 0 || start >= len(path) { return "", -1 } end := strings.IndexRune(path[start:], '/') if end == -1 { return path[start:], -1 } if path[start:start+end] == "/" { return "", start + end + 1 } return path[start : sta...
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// slices string into path segments performing 0 heap allocation
[ "slices", "string", "into", "path", "segments", "performing", "0", "heap", "allocation" ]
b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/router/tree.go#L99-L111
train
flynn/flynn
controller/events.go
Notify
func (e *EventSubscriber) Notify(event *ct.Event) { if len(e.objectTypes) > 0 { foundType := false for _, typ := range e.objectTypes { if typ == string(event.ObjectType) { foundType = true break } } if !foundType { return } } if e.objectID != "" && e.objectID != event.ObjectID { return ...
go
func (e *EventSubscriber) Notify(event *ct.Event) { if len(e.objectTypes) > 0 { foundType := false for _, typ := range e.objectTypes { if typ == string(event.ObjectType) { foundType = true break } } if !foundType { return } } if e.objectID != "" && e.objectID != event.ObjectID { return ...
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// Notify filters the event based on it's type and objectID and then pushes // it to the event queue.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/events.go#L328-L350
train
flynn/flynn
controller/events.go
loop
func (e *EventSubscriber) loop() { defer close(e.Events) for { select { case <-e.stop: return case event := <-e.queue: e.Events <- event } } }
go
func (e *EventSubscriber) loop() { defer close(e.Events) for { select { case <-e.stop: return case event := <-e.queue: e.Events <- event } } }
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// loop pops events off the queue and sends them to the Events channel.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/events.go#L353-L363
train
flynn/flynn
controller/events.go
Close
func (e *EventSubscriber) Close() { e.l.Unsubscribe(e) e.stopOnce.Do(func() { close(e.stop) }) }
go
func (e *EventSubscriber) Close() { e.l.Unsubscribe(e) e.stopOnce.Do(func() { close(e.stop) }) }
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// Close unsubscribes from the EventListener and stops the loop.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/events.go#L366-L369
train
flynn/flynn
controller/events.go
CloseWithError
func (e *EventSubscriber) CloseWithError(err error) { e.errOnce.Do(func() { e.Err = err }) e.Close() }
go
func (e *EventSubscriber) CloseWithError(err error) { e.errOnce.Do(func() { e.Err = err }) e.Close() }
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// CloseWithError sets the Err field and then closes the subscriber.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/events.go#L372-L375
train
flynn/flynn
controller/events.go
Subscribe
func (e *EventListener) Subscribe(appID string, objectTypes []string, objectID string) (*EventSubscriber, error) { e.subMtx.Lock() defer e.subMtx.Unlock() if e.IsClosed() { return nil, errors.New("event listener closed") } s := &EventSubscriber{ Events: make(chan *ct.Event), l: e, queue: ...
go
func (e *EventListener) Subscribe(appID string, objectTypes []string, objectID string) (*EventSubscriber, error) { e.subMtx.Lock() defer e.subMtx.Unlock() if e.IsClosed() { return nil, errors.New("event listener closed") } s := &EventSubscriber{ Events: make(chan *ct.Event), l: e, queue: ...
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// Subscribe creates and returns an EventSubscriber for the given app, type and object. // Using an empty string for appID subscribes to all apps
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/events.go#L400-L421
train
flynn/flynn
controller/events.go
Unsubscribe
func (e *EventListener) Unsubscribe(s *EventSubscriber) { e.subMtx.Lock() defer e.subMtx.Unlock() if subs, ok := e.subscribers[s.appID]; ok { delete(subs, s) if len(subs) == 0 { delete(e.subscribers, s.appID) } } }
go
func (e *EventListener) Unsubscribe(s *EventSubscriber) { e.subMtx.Lock() defer e.subMtx.Unlock() if subs, ok := e.subscribers[s.appID]; ok { delete(subs, s) if len(subs) == 0 { delete(e.subscribers, s.appID) } } }
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// Unsubscribe unsubscribes the given subscriber.
[ "Unsubscribe", "unsubscribes", "the", "given", "subscriber", "." ]
b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/events.go#L424-L433
train
flynn/flynn
controller/events.go
Listen
func (e *EventListener) Listen() error { log := logger.New("fn", "EventListener.Listen") listener, err := e.eventRepo.db.Listen("events", log) if err != nil { e.CloseWithError(err) return err } go func() { for { select { case n, ok := <-listener.Notify: if !ok { e.CloseWithError(listener.Err) ...
go
func (e *EventListener) Listen() error { log := logger.New("fn", "EventListener.Listen") listener, err := e.eventRepo.db.Listen("events", log) if err != nil { e.CloseWithError(err) return err } go func() { for { select { case n, ok := <-listener.Notify: if !ok { e.CloseWithError(listener.Err) ...
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// Listen creates a postgres listener for events and starts a goroutine to // forward the events to subscribers.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/events.go#L437-L475
train
flynn/flynn
controller/events.go
Notify
func (e *EventListener) Notify(event *ct.Event) { e.subMtx.RLock() defer e.subMtx.RUnlock() if subs, ok := e.subscribers[event.AppID]; ok { for sub := range subs { sub.Notify(event) } } if event.AppID != "" { // Ensure subscribers not filtering by app get the event if subs, ok := e.subscribers[""]; ok {...
go
func (e *EventListener) Notify(event *ct.Event) { e.subMtx.RLock() defer e.subMtx.RUnlock() if subs, ok := e.subscribers[event.AppID]; ok { for sub := range subs { sub.Notify(event) } } if event.AppID != "" { // Ensure subscribers not filtering by app get the event if subs, ok := e.subscribers[""]; ok {...
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// Notify notifies all sbscribers of the given event.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/events.go#L478-L494
train
flynn/flynn
controller/events.go
IsClosed
func (e *EventListener) IsClosed() bool { e.closedMtx.RLock() defer e.closedMtx.RUnlock() return e.closed }
go
func (e *EventListener) IsClosed() bool { e.closedMtx.RLock() defer e.closedMtx.RUnlock() return e.closed }
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// IsClosed returns whether or not the listener is closed.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/events.go#L497-L501
train
flynn/flynn
controller/events.go
CloseWithError
func (e *EventListener) CloseWithError(err error) { e.closedMtx.Lock() if e.closed { e.closedMtx.Unlock() return } e.closed = true e.closedMtx.Unlock() e.subMtx.RLock() defer e.subMtx.RUnlock() subscribers := e.subscribers for _, subs := range subscribers { for sub := range subs { go sub.CloseWithErr...
go
func (e *EventListener) CloseWithError(err error) { e.closedMtx.Lock() if e.closed { e.closedMtx.Unlock() return } e.closed = true e.closedMtx.Unlock() e.subMtx.RLock() defer e.subMtx.RUnlock() subscribers := e.subscribers for _, subs := range subscribers { for sub := range subs { go sub.CloseWithErr...
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// CloseWithError marks the listener as closed and closes all subscribers // with the given error.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/controller/events.go#L505-L523
train
flynn/flynn
pkg/rpcplus/server.go
prepareMethod
func prepareMethod(method reflect.Method) *methodType { mtype := method.Type mname := method.Name var replyType, argType, contextType reflect.Type stream := false // Method must be exported. if method.PkgPath != "" { return nil } switch mtype.NumIn() { case 3: // normal method argType = mtype.In(1) r...
go
func prepareMethod(method reflect.Method) *methodType { mtype := method.Type mname := method.Name var replyType, argType, contextType reflect.Type stream := false // Method must be exported. if method.PkgPath != "" { return nil } switch mtype.NumIn() { case 3: // normal method argType = mtype.In(1) r...
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// prepareMethod returns a methodType for the provided method or nil // in case if the method was unsuitable.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/rpcplus/server.go#L261-L320
train
flynn/flynn
pkg/rpcplus/server.go
ServeConnWithContext
func (server *Server) ServeConnWithContext(conn io.ReadWriteCloser, context interface{}) { buf := bufio.NewWriter(conn) srv := &gobServerCodec{conn, gob.NewDecoder(conn), gob.NewEncoder(buf), buf} server.ServeCodecWithContext(srv, context) }
go
func (server *Server) ServeConnWithContext(conn io.ReadWriteCloser, context interface{}) { buf := bufio.NewWriter(conn) srv := &gobServerCodec{conn, gob.NewDecoder(conn), gob.NewEncoder(buf), buf} server.ServeCodecWithContext(srv, context) }
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// ServeConnWithContext is like ServeConn but makes it possible to // pass a connection context to the RPC methods.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/rpcplus/server.go#L538-L542
train
flynn/flynn
pkg/rpcplus/server.go
ServeCodecWithContext
func (server *Server) ServeCodecWithContext(codec ServerCodec, context interface{}) { sending := new(sync.Mutex) eof := make(chan struct{}) stopChans := make(map[uint64]chan struct{}) var stopChansMtx sync.Mutex var contextVal reflect.Value if context != nil { contextVal = reflect.ValueOf(context) } else { ...
go
func (server *Server) ServeCodecWithContext(codec ServerCodec, context interface{}) { sending := new(sync.Mutex) eof := make(chan struct{}) stopChans := make(map[uint64]chan struct{}) var stopChansMtx sync.Mutex var contextVal reflect.Value if context != nil { contextVal = reflect.ValueOf(context) } else { ...
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// ServeCodecWithContext is like ServeCodec but it makes it possible // to pass a connection context to the RPC methods.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/rpcplus/server.go#L552-L620
train
flynn/flynn
pkg/rpcplus/server.go
Accept
func (server *Server) Accept(lis net.Listener) { for { conn, err := lis.Accept() if err != nil { log.Fatal("rpc.Serve: accept:", err.Error()) // TODO(r): exit? } go server.ServeConn(conn) } }
go
func (server *Server) Accept(lis net.Listener) { for { conn, err := lis.Accept() if err != nil { log.Fatal("rpc.Serve: accept:", err.Error()) // TODO(r): exit? } go server.ServeConn(conn) } }
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// Accept accepts connections on the listener and serves requests // for each incoming connection. Accept blocks; the caller typically // invokes it in a go statement.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/rpcplus/server.go#L742-L750
train
flynn/flynn
pkg/rpcplus/server.go
ServeHTTP
func (server *Server) ServeHTTP(w http.ResponseWriter, req *http.Request) { if req.Method != "CONNECT" { w.Header().Set("Content-Type", "text/plain; charset=utf-8") w.WriteHeader(http.StatusMethodNotAllowed) io.WriteString(w, "405 must CONNECT\n") return } conn, _, err := w.(http.Hijacker).Hijack() if err !...
go
func (server *Server) ServeHTTP(w http.ResponseWriter, req *http.Request) { if req.Method != "CONNECT" { w.Header().Set("Content-Type", "text/plain; charset=utf-8") w.WriteHeader(http.StatusMethodNotAllowed) io.WriteString(w, "405 must CONNECT\n") return } conn, _, err := w.(http.Hijacker).Hijack() if err !...
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// ServeHTTP implements an http.Handler that answers RPC requests.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/pkg/rpcplus/server.go#L812-L826
train
flynn/flynn
appliance/mariadb/process.go
Backup
func (p *Process) Backup() (io.ReadCloser, error) { r := &backupReadCloser{} cmd := exec.Command( filepath.Join(p.BinDir, "innobackupex"), "--defaults-file="+p.ConfigPath(), "--host=127.0.0.1", "--port="+p.Port, "--user=flynn", "--password="+p.Password, "--socket=", "--stream=xbstream", ".", ) cm...
go
func (p *Process) Backup() (io.ReadCloser, error) { r := &backupReadCloser{} cmd := exec.Command( filepath.Join(p.BinDir, "innobackupex"), "--defaults-file="+p.ConfigPath(), "--host=127.0.0.1", "--port="+p.Port, "--user=flynn", "--password="+p.Password, "--socket=", "--stream=xbstream", ".", ) cm...
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// Backup returns a reader for streaming a backup in xbstream format.
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b4b05fce92da5fbc53b272362d87b994b88a3869
https://github.com/flynn/flynn/blob/b4b05fce92da5fbc53b272362d87b994b88a3869/appliance/mariadb/process.go#L289-L320
train