/
fabricbeat.go
94 lines (80 loc) · 1.81 KB
/
fabricbeat.go
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package beater
import (
"fmt"
"time"
"context"
"io"
"os"
"github.com/elastic/beats/libbeat/beat"
"github.com/elastic/beats/libbeat/common"
"github.com/elastic/beats/libbeat/logp"
"github.com/karadalex/fabricbeat/config"
"github.com/docker/docker/api/types"
"github.com/docker/docker/client"
)
// Fabricbeat configuration.
type Fabricbeat struct {
done chan struct{}
config config.Config
client beat.Client
}
// New creates an instance of fabricbeat.
func New(b *beat.Beat, cfg *common.Config) (beat.Beater, error) {
c := config.DefaultConfig
if err := cfg.Unpack(&c); err != nil {
return nil, fmt.Errorf("Error reading config file: %v", err)
}
bt := &Fabricbeat{
done: make(chan struct{}),
config: c,
}
return bt, nil
}
// Run starts fabricbeat.
func (bt *Fabricbeat) Run(b *beat.Beat) error {
logp.Info("fabricbeat is running! Hit CTRL-C to stop it.")
var err error
bt.client, err = b.Publisher.Connect()
if err != nil {
return err
}
ticker := time.NewTicker(bt.config.Period)
counter := 1
for {
select {
case <-bt.done:
return nil
case <-ticker.C:
}
// Get logs from Fabric Docker container
ctx := context.Background()
cli, err := client.NewEnvClient()
if err != nil {
panic(err)
}
cli.NegotiateAPIVersion(ctx)
// Specify containerID from configuration (TODO)
options := types.ContainerLogsOptions{ShowStdout: true}
out, err := cli.ContainerLogs(ctx, "6a7bd48821d3", options)
if err != nil {
panic(err)
}
io.Copy(os.Stdout, out)
event := beat.Event{
Timestamp: time.Now(),
Fields: common.MapStr{
"type": b.Info.Name,
"counter": counter,
"fabric_log": out,
},
}
bt.client.Publish(event)
logp.Info("Event sent")
counter++
}
}
// Stop stops fabricbeat.
func (bt *Fabricbeat) Stop() {
bt.client.Close()
close(bt.done)
}