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output.go
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/
output.go
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package shim
import (
"bufio"
"fmt"
"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/plugins/parsers/influx"
)
// AddOutput adds the input to the shim. Later calls to Run() will run this.
func (s *Shim) AddOutput(output telegraf.Output) error {
setLoggerOnPlugin(output, s.Log())
if p, ok := output.(telegraf.Initializer); ok {
err := p.Init()
if err != nil {
return fmt.Errorf("failed to init input: %s", err)
}
}
s.Output = output
return nil
}
func (s *Shim) RunOutput() error {
parser := influx.Parser{}
err := parser.Init()
if err != nil {
return fmt.Errorf("Failed to create new parser: %w", err)
}
err = s.Output.Connect()
if err != nil {
return fmt.Errorf("failed to start processor: %w", err)
}
defer s.Output.Close()
var m telegraf.Metric
scanner := bufio.NewScanner(s.stdin)
for scanner.Scan() {
m, err = parser.ParseLine(scanner.Text())
if err != nil {
fmt.Fprintf(s.stderr, "Failed to parse metric: %s\n", err)
continue
}
if err = s.Output.Write([]telegraf.Metric{m}); err != nil {
fmt.Fprintf(s.stderr, "Failed to write metric: %s\n", err)
}
}
return nil
}