70 lines
1.3 KiB
Go
70 lines
1.3 KiB
Go
package graphite
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import (
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"net"
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"strings"
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"github.com/influxdb/influxdb"
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)
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const (
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udpBufferSize = 65536
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)
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// UDPerver processes Graphite data received via UDP.
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type UDPServer struct {
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writer SeriesWriter
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parser *Parser
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Database string
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}
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// NewUDPServer returns a new instance of a UDPServer
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func NewUDPServer(p *Parser, w SeriesWriter) *UDPServer {
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u := UDPServer{
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parser: p,
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writer: w,
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}
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return &u
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}
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// ListenAndServer instructs the UDPServer to start processing Graphite data
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// on the given interface. iface must be in the form host:port.
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func (u *UDPServer) ListenAndServe(iface string) error {
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if iface == "" { // Make sure we have an address
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return ErrBindAddressRequired
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} else if u.Database == "" { // Make sure they have a database
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return ErrDatabaseNotSpecified
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}
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addr, err := net.ResolveUDPAddr("udp", iface)
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if err != nil {
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return nil
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}
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conn, err := net.ListenUDP("udp", addr)
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if err != nil {
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return err
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}
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buf := make([]byte, udpBufferSize)
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go func() {
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for {
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n, _, err := conn.ReadFromUDP(buf)
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if err != nil {
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return
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}
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for _, line := range strings.Split(string(buf[:n]), "\n") {
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point, err := u.parser.Parse(line)
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if err != nil {
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continue
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}
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// Send the data to database
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u.writer.WriteSeries(u.Database, "", []influxdb.Point{point})
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}
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}
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}()
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return nil
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}
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