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nagfluxFileCollector.go
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nagfluxFileCollector.go
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package nagflux
import (
"github.com/griesbacher/nagflux/collector/spoolfile"
"github.com/griesbacher/nagflux/logging"
"github.com/kdar/factorlog"
"io/ioutil"
"os"
"strings"
"time"
)
//FileCollector provides a interface to nagflux, in which you could insert influxdb queries.
type FileCollector struct {
quit chan bool
results chan interface{}
folder string
log *factorlog.FactorLog
}
//NewNagfluxFileCollector constructor, which also starts the collector.
func NewNagfluxFileCollector(results chan interface{}, folder string) *FileCollector {
s := &FileCollector{make(chan bool, 1), results, folder, logging.GetLogger()}
go s.run()
return s
}
//Stop stops the Collector.
func (nfc *FileCollector) Stop() {
nfc.quit <- true
<-nfc.quit
nfc.log.Debug("NagfluxFileCollector stoped")
}
//Checks if the files are old enough, if so they will be added in the queue
func (nfc FileCollector) run() {
for {
select {
case <-nfc.quit:
nfc.quit <- true
return
case <-time.After(spoolfile.IntervalToCheckDirectory):
for _, currentFile := range spoolfile.FilesInDirectoryOlderThanX(nfc.folder, spoolfile.MinFileAge) {
data, err := ioutil.ReadFile(currentFile)
if err != nil {
break
}
for _, line := range strings.SplitAfter(string(data), "\n") {
line = strings.TrimSpace(line)
if line == "" {
continue
}
select {
case <-nfc.quit:
nfc.quit <- true
return
case nfc.results <- line:
case <-time.After(time.Duration(1) * time.Minute):
nfc.log.Warn("NagfluxFileCollector: Could not write to buffer")
}
}
err = os.Remove(currentFile)
if err != nil {
logging.GetLogger().Warn(err)
}
}
}
}
}