src/go/plugin/go.d/modules/apache/apache.go
// SPDX-License-Identifier: GPL-3.0-or-later
package apache
import (
_ "embed"
"errors"
"net/http"
"sync"
"time"
"github.com/netdata/netdata/go/plugins/plugin/go.d/agent/module"
"github.com/netdata/netdata/go/plugins/plugin/go.d/pkg/confopt"
"github.com/netdata/netdata/go/plugins/plugin/go.d/pkg/web"
)
//go:embed "config_schema.json"
var configSchema string
func init() {
module.Register("apache", module.Creator{
Create: func() module.Module { return New() },
JobConfigSchema: configSchema,
Config: func() any { return &Config{} },
})
}
func New() *Apache {
return &Apache{
Config: Config{
HTTPConfig: web.HTTPConfig{
RequestConfig: web.RequestConfig{
URL: "http://127.0.0.1/server-status?auto",
},
ClientConfig: web.ClientConfig{
Timeout: confopt.Duration(time.Second),
},
},
},
charts: &module.Charts{},
once: &sync.Once{},
}
}
type Config struct {
UpdateEvery int `yaml:"update_every,omitempty" json:"update_every"`
web.HTTPConfig `yaml:",inline" json:""`
}
type Apache struct {
module.Base
Config `yaml:",inline" json:""`
charts *module.Charts
httpClient *http.Client
once *sync.Once
}
func (a *Apache) Configuration() any {
return a.Config
}
func (a *Apache) Init() error {
if err := a.validateConfig(); err != nil {
a.Errorf("config validation: %v", err)
return err
}
httpClient, err := a.initHTTPClient()
if err != nil {
a.Errorf("init HTTP client: %v", err)
return err
}
a.httpClient = httpClient
a.Debugf("using URL %s", a.URL)
a.Debugf("using timeout: %s", a.Timeout)
return nil
}
func (a *Apache) Check() error {
mx, err := a.collect()
if err != nil {
a.Error(err)
return err
}
if len(mx) == 0 {
return errors.New("no metrics collected")
}
return nil
}
func (a *Apache) Charts() *module.Charts {
return a.charts
}
func (a *Apache) Collect() map[string]int64 {
mx, err := a.collect()
if err != nil {
a.Error(err)
}
if len(mx) == 0 {
return nil
}
return mx
}
func (a *Apache) Cleanup() {
if a.httpClient != nil {
a.httpClient.CloseIdleConnections()
}
}