107 lines
2.5 KiB
Go
107 lines
2.5 KiB
Go
package socket_writer
|
|
|
|
import (
|
|
"fmt"
|
|
"net"
|
|
"strings"
|
|
|
|
"github.com/influxdata/telegraf"
|
|
"github.com/influxdata/telegraf/plugins/outputs"
|
|
"github.com/influxdata/telegraf/plugins/serializers"
|
|
)
|
|
|
|
type SocketWriter struct {
|
|
Address string
|
|
|
|
serializers.Serializer
|
|
|
|
net.Conn
|
|
}
|
|
|
|
func (sw *SocketWriter) Description() string {
|
|
return "Generic socket writer capable of handling multiple socket types."
|
|
}
|
|
|
|
func (sw *SocketWriter) SampleConfig() string {
|
|
return `
|
|
## URL to connect to
|
|
# address = "tcp://127.0.0.1:8094"
|
|
# address = "tcp://example.com:http"
|
|
# address = "tcp4://127.0.0.1:8094"
|
|
# address = "tcp6://127.0.0.1:8094"
|
|
# address = "tcp6://[2001:db8::1]:8094"
|
|
# address = "udp://127.0.0.1:8094"
|
|
# address = "udp4://127.0.0.1:8094"
|
|
# address = "udp6://127.0.0.1:8094"
|
|
# address = "unix:///tmp/telegraf.sock"
|
|
# address = "unixgram:///tmp/telegraf.sock"
|
|
|
|
## Data format to generate.
|
|
## Each data format has it's own unique set of configuration options, read
|
|
## more about them here:
|
|
## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
|
|
# data_format = "influx"
|
|
`
|
|
}
|
|
|
|
func (sw *SocketWriter) SetSerializer(s serializers.Serializer) {
|
|
sw.Serializer = s
|
|
}
|
|
|
|
func (sw *SocketWriter) Connect() error {
|
|
spl := strings.SplitN(sw.Address, "://", 2)
|
|
if len(spl) != 2 {
|
|
return fmt.Errorf("invalid address: %s", sw.Address)
|
|
}
|
|
|
|
c, err := net.Dial(spl[0], spl[1])
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
sw.Conn = c
|
|
return nil
|
|
}
|
|
|
|
// Write writes the given metrics to the destination.
|
|
// If an error is encountered, it is up to the caller to retry the same write again later.
|
|
// Not parallel safe.
|
|
func (sw *SocketWriter) Write(metrics []telegraf.Metric) error {
|
|
if sw.Conn == nil {
|
|
// previous write failed with permanent error and socket was closed.
|
|
if err := sw.Connect(); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
for _, m := range metrics {
|
|
bs, err := sw.Serialize(m)
|
|
if err != nil {
|
|
//TODO log & keep going with remaining metrics
|
|
return err
|
|
}
|
|
if _, err := sw.Conn.Write(bs); err != nil {
|
|
//TODO log & keep going with remaining strings
|
|
if err, ok := err.(net.Error); !ok || !err.Temporary() {
|
|
// permanent error. close the connection
|
|
sw.Close()
|
|
sw.Conn = nil
|
|
}
|
|
return err
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func newSocketWriter() *SocketWriter {
|
|
s, _ := serializers.NewInfluxSerializer()
|
|
return &SocketWriter{
|
|
Serializer: s,
|
|
}
|
|
}
|
|
|
|
func init() {
|
|
outputs.Add("socket_writer", func() telegraf.Output { return newSocketWriter() })
|
|
}
|