diff options
Diffstat (limited to 'vendor/github.com/influxdata/influxdb/client/v2/udp.go')
-rw-r--r-- | vendor/github.com/influxdata/influxdb/client/v2/udp.go | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/vendor/github.com/influxdata/influxdb/client/v2/udp.go b/vendor/github.com/influxdata/influxdb/client/v2/udp.go new file mode 100644 index 000000000..779a28b33 --- /dev/null +++ b/vendor/github.com/influxdata/influxdb/client/v2/udp.go @@ -0,0 +1,112 @@ +package client + +import ( + "fmt" + "io" + "net" + "time" +) + +const ( + // UDPPayloadSize is a reasonable default payload size for UDP packets that + // could be travelling over the internet. + UDPPayloadSize = 512 +) + +// UDPConfig is the config data needed to create a UDP Client. +type UDPConfig struct { + // Addr should be of the form "host:port" + // or "[ipv6-host%zone]:port". + Addr string + + // PayloadSize is the maximum size of a UDP client message, optional + // Tune this based on your network. Defaults to UDPPayloadSize. + PayloadSize int +} + +// NewUDPClient returns a client interface for writing to an InfluxDB UDP +// service from the given config. +func NewUDPClient(conf UDPConfig) (Client, error) { + var udpAddr *net.UDPAddr + udpAddr, err := net.ResolveUDPAddr("udp", conf.Addr) + if err != nil { + return nil, err + } + + conn, err := net.DialUDP("udp", nil, udpAddr) + if err != nil { + return nil, err + } + + payloadSize := conf.PayloadSize + if payloadSize == 0 { + payloadSize = UDPPayloadSize + } + + return &udpclient{ + conn: conn, + payloadSize: payloadSize, + }, nil +} + +// Close releases the udpclient's resources. +func (uc *udpclient) Close() error { + return uc.conn.Close() +} + +type udpclient struct { + conn io.WriteCloser + payloadSize int +} + +func (uc *udpclient) Write(bp BatchPoints) error { + var b = make([]byte, 0, uc.payloadSize) // initial buffer size, it will grow as needed + var d, _ = time.ParseDuration("1" + bp.Precision()) + + var delayedError error + + var checkBuffer = func(n int) { + if len(b) > 0 && len(b)+n > uc.payloadSize { + if _, err := uc.conn.Write(b); err != nil { + delayedError = err + } + b = b[:0] + } + } + + for _, p := range bp.Points() { + p.pt.Round(d) + pointSize := p.pt.StringSize() + 1 // include newline in size + //point := p.pt.RoundedString(d) + "\n" + + checkBuffer(pointSize) + + if p.Time().IsZero() || pointSize <= uc.payloadSize { + b = p.pt.AppendString(b) + b = append(b, '\n') + continue + } + + points := p.pt.Split(uc.payloadSize - 1) // account for newline character + for _, sp := range points { + checkBuffer(sp.StringSize() + 1) + b = sp.AppendString(b) + b = append(b, '\n') + } + } + + if len(b) > 0 { + if _, err := uc.conn.Write(b); err != nil { + return err + } + } + return delayedError +} + +func (uc *udpclient) Query(q Query) (*Response, error) { + return nil, fmt.Errorf("Querying via UDP is not supported") +} + +func (uc *udpclient) Ping(timeout time.Duration) (time.Duration, string, error) { + return 0, "", nil +} |