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// SPDX-License-Identifier: GPL-3.0-or-later
package consul
import (
_ "embed"
"errors"
"net/http"
"sync"
"time"
"github.com/netdata/netdata/go/go.d.plugin/agent/module"
"github.com/netdata/netdata/go/go.d.plugin/pkg/prometheus"
"github.com/netdata/netdata/go/go.d.plugin/pkg/web"
"github.com/blang/semver/v4"
)
//go:embed "config_schema.json"
var configSchema string
func init() {
module.Register("consul", module.Creator{
JobConfigSchema: configSchema,
Defaults: module.Defaults{
UpdateEvery: 1,
},
Create: func() module.Module { return New() },
})
}
func New() *Consul {
return &Consul{
Config: Config{
HTTP: web.HTTP{
Request: web.Request{
URL: "http://127.0.0.1:8500",
},
Client: web.Client{
Timeout: web.Duration(time.Second),
},
},
},
charts: &module.Charts{},
addGlobalChartsOnce: &sync.Once{},
addServerAutopilotChartsOnce: &sync.Once{},
checks: make(map[string]bool),
}
}
type Config struct {
web.HTTP `yaml:",inline" json:""`
UpdateEvery int `yaml:"update_every" json:"update_every"`
ACLToken string `yaml:"acl_token" json:"acl_token"`
}
type Consul struct {
module.Base
Config `yaml:",inline" json:""`
charts *module.Charts
addGlobalChartsOnce *sync.Once
addServerAutopilotChartsOnce *sync.Once
httpClient *http.Client
prom prometheus.Prometheus
cfg *consulConfig
version *semver.Version
hasLeaderCharts bool
hasFollowerCharts bool
checks map[string]bool
}
func (c *Consul) Configuration() any {
return c.Config
}
func (c *Consul) Init() error {
if err := c.validateConfig(); err != nil {
c.Errorf("config validation: %v", err)
return err
}
httpClient, err := c.initHTTPClient()
if err != nil {
c.Errorf("init HTTP client: %v", err)
return err
}
c.httpClient = httpClient
prom, err := c.initPrometheusClient(httpClient)
if err != nil {
c.Errorf("init Prometheus client: %v", err)
return err
}
c.prom = prom
return nil
}
func (c *Consul) Check() error {
mx, err := c.collect()
if err != nil {
c.Error(err)
return err
}
if len(mx) == 0 {
return errors.New("no metrics collected")
}
return nil
}
func (c *Consul) Charts() *module.Charts {
return c.charts
}
func (c *Consul) Collect() map[string]int64 {
mx, err := c.collect()
if err != nil {
c.Error(err)
}
if len(mx) == 0 {
return nil
}
return mx
}
func (c *Consul) Cleanup() {
if c.httpClient != nil {
c.httpClient.CloseIdleConnections()
}
}
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