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// SPDX-License-Identifier: GPL-3.0-or-later
package envoy
import (
_ "embed"
"errors"
"time"
"github.com/netdata/netdata/go/plugins/plugin/go.d/agent/module"
"github.com/netdata/netdata/go/plugins/plugin/go.d/pkg/prometheus"
"github.com/netdata/netdata/go/plugins/plugin/go.d/pkg/web"
)
//go:embed "config_schema.json"
var configSchema string
func init() {
module.Register("envoy", module.Creator{
JobConfigSchema: configSchema,
Create: func() module.Module { return New() },
Config: func() any { return &Config{} },
})
}
func New() *Envoy {
return &Envoy{
Config: Config{
HTTP: web.HTTP{
Request: web.Request{
URL: "http://127.0.0.1:9091/stats/prometheus",
},
Client: web.Client{
Timeout: web.Duration(time.Second),
},
},
},
charts: &module.Charts{},
servers: make(map[string]bool),
clusterMgrs: make(map[string]bool),
clusterUpstream: make(map[string]bool),
listenerMgrs: make(map[string]bool),
listenerAdminDownstream: make(map[string]bool),
listenerDownstream: make(map[string]bool),
}
}
type Config struct {
UpdateEvery int `yaml:"update_every,omitempty" json:"update_every"`
web.HTTP `yaml:",inline" json:""`
}
type Envoy struct {
module.Base
Config `yaml:",inline" json:""`
charts *module.Charts
prom prometheus.Prometheus
servers map[string]bool
clusterMgrs map[string]bool
clusterUpstream map[string]bool
listenerMgrs map[string]bool
listenerAdminDownstream map[string]bool
listenerDownstream map[string]bool
}
func (e *Envoy) Configuration() any {
return e.Config
}
func (e *Envoy) Init() error {
if err := e.validateConfig(); err != nil {
e.Errorf("config validation: %v", err)
return err
}
prom, err := e.initPrometheusClient()
if err != nil {
e.Errorf("init Prometheus client: %v", err)
return err
}
e.prom = prom
return nil
}
func (e *Envoy) Check() error {
mx, err := e.collect()
if err != nil {
e.Error(err)
return err
}
if len(mx) == 0 {
return errors.New("no metrics collected")
}
return nil
}
func (e *Envoy) Charts() *module.Charts {
return e.charts
}
func (e *Envoy) Collect() map[string]int64 {
mx, err := e.collect()
if err != nil {
e.Error(err)
}
if len(mx) == 0 {
return nil
}
return mx
}
func (e *Envoy) Cleanup() {
if e.prom == nil || e.prom.HTTPClient() == nil {
return
}
e.prom.HTTPClient().CloseIdleConnections()
}
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