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// SPDX-License-Identifier: GPL-3.0-or-later
package pulsar
import (
_ "embed"
"errors"
"sync"
"time"
"github.com/netdata/netdata/go/go.d.plugin/agent/module"
"github.com/netdata/netdata/go/go.d.plugin/pkg/matcher"
"github.com/netdata/netdata/go/go.d.plugin/pkg/prometheus"
"github.com/netdata/netdata/go/go.d.plugin/pkg/web"
)
//go:embed "config_schema.json"
var configSchema string
func init() {
module.Register("pulsar", module.Creator{
JobConfigSchema: configSchema,
Defaults: module.Defaults{
UpdateEvery: 60,
},
Create: func() module.Module { return New() },
})
}
func New() *Pulsar {
return &Pulsar{
Config: Config{
HTTP: web.HTTP{
Request: web.Request{
URL: "http://127.0.0.1:8080/metrics",
},
Client: web.Client{
Timeout: web.Duration(time.Second * 5),
},
},
TopicFilter: matcher.SimpleExpr{
Includes: nil,
Excludes: []string{"*"},
},
},
once: &sync.Once{},
charts: summaryCharts.Copy(),
nsCharts: namespaceCharts.Copy(),
topicChartsMapping: topicChartsMapping(),
cache: newCache(),
curCache: newCache(),
}
}
type Config struct {
web.HTTP `yaml:",inline" json:""`
UpdateEvery int `yaml:"update_every" json:"update_every"`
TopicFilter matcher.SimpleExpr `yaml:"topic_filter" json:"topic_filter"`
}
type Pulsar struct {
module.Base
Config `yaml:",inline" json:""`
charts *Charts
nsCharts *Charts
prom prometheus.Prometheus
topicFilter matcher.Matcher
cache *cache
curCache *cache
once *sync.Once
topicChartsMapping map[string]string
}
func (p *Pulsar) Configuration() any {
return p.Config
}
func (p *Pulsar) Init() error {
if err := p.validateConfig(); err != nil {
p.Errorf("config validation: %v", err)
return err
}
prom, err := p.initPrometheusClient()
if err != nil {
p.Error(err)
return err
}
p.prom = prom
m, err := p.initTopicFilerMatcher()
if err != nil {
p.Error(err)
return err
}
p.topicFilter = m
return nil
}
func (p *Pulsar) Check() error {
mx, err := p.collect()
if err != nil {
p.Error(err)
return err
}
if len(mx) == 0 {
return errors.New("no metrics collected")
}
return nil
}
func (p *Pulsar) Charts() *Charts {
return p.charts
}
func (p *Pulsar) Collect() map[string]int64 {
mx, err := p.collect()
if err != nil {
p.Error(err)
}
if len(mx) == 0 {
return nil
}
return mx
}
func (p *Pulsar) Cleanup() {
if p.prom != nil && p.prom.HTTPClient() != nil {
p.prom.HTTPClient().CloseIdleConnections()
}
}
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