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// SPDX-License-Identifier: GPL-3.0-or-later
package logstash
import (
_ "embed"
"errors"
"net/http"
"time"
"github.com/netdata/netdata/go/go.d.plugin/agent/module"
"github.com/netdata/netdata/go/go.d.plugin/pkg/web"
)
//go:embed "config_schema.json"
var configSchema string
func init() {
module.Register("logstash", module.Creator{
JobConfigSchema: configSchema,
Create: func() module.Module { return New() },
})
}
func New() *Logstash {
return &Logstash{
Config: Config{
HTTP: web.HTTP{
Request: web.Request{
URL: "http://localhost:9600",
},
Client: web.Client{
Timeout: web.Duration(time.Second),
},
},
},
charts: charts.Copy(),
pipelines: make(map[string]bool),
}
}
type Config struct {
web.HTTP `yaml:",inline" json:""`
UpdateEvery int `yaml:"update_every" json:"update_every"`
}
type Logstash struct {
module.Base
Config `yaml:",inline" json:""`
charts *module.Charts
httpClient *http.Client
pipelines map[string]bool
}
func (l *Logstash) Configuration() any {
return l.Config
}
func (l *Logstash) Init() error {
if l.URL == "" {
l.Error("config validation: 'url' cannot be empty")
return errors.New("url not set")
}
httpClient, err := web.NewHTTPClient(l.Client)
if err != nil {
l.Errorf("init HTTP client: %v", err)
return err
}
l.httpClient = httpClient
l.Debugf("using URL %s", l.URL)
l.Debugf("using timeout: %s", l.Timeout.Duration())
return nil
}
func (l *Logstash) Check() error {
mx, err := l.collect()
if err != nil {
l.Error(err)
return err
}
if len(mx) == 0 {
return errors.New("no metrics collected")
}
return nil
}
func (l *Logstash) Charts() *module.Charts {
return l.charts
}
func (l *Logstash) Collect() map[string]int64 {
mx, err := l.collect()
if err != nil {
l.Error(err)
}
if len(mx) == 0 {
return nil
}
return mx
}
func (l *Logstash) Cleanup() {
if l.httpClient != nil {
l.httpClient.CloseIdleConnections()
}
}
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