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heartbeat.go
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/
heartbeat.go
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package beater
import (
"fmt"
"time"
"github.com/elastic/beats/libbeat/beat"
"github.com/elastic/beats/libbeat/common"
"github.com/elastic/beats/libbeat/logp"
"github.com/elastic/beats/heartbeat/config"
"github.com/elastic/beats/heartbeat/monitors"
"github.com/elastic/beats/heartbeat/scheduler"
)
type Heartbeat struct {
done chan struct{}
scheduler *scheduler.Scheduler
manager *monitorManager
}
func New(b *beat.Beat, cfg *common.Config) (beat.Beater, error) {
logp.Warn("Beta: Heartbeat is beta software")
config := config.DefaultConfig
if err := cfg.Unpack(&config); err != nil {
return nil, fmt.Errorf("Error reading config file: %v", err)
}
limit := config.Scheduler.Limit
locationName := config.Scheduler.Location
if locationName == "" {
locationName = "Local"
}
location, err := time.LoadLocation(locationName)
if err != nil {
return nil, err
}
sched := scheduler.NewWithLocation(limit, location)
manager, err := newMonitorManager(b.Publisher, sched, monitors.Registry, config.Monitors)
if err != nil {
return nil, err
}
bt := &Heartbeat{
done: make(chan struct{}),
scheduler: sched,
manager: manager,
}
return bt, nil
}
func (bt *Heartbeat) Run(b *beat.Beat) error {
logp.Info("heartbeat is running! Hit CTRL-C to stop it.")
if err := bt.scheduler.Start(); err != nil {
return err
}
defer bt.scheduler.Stop()
<-bt.done
bt.manager.Stop()
logp.Info("Shutting down.")
return nil
}
func (bt *Heartbeat) Stop() {
close(bt.done)
}