firehol/netdata

// SPDX-License-Identifier: GPL-3.0-or-later

package zookeeper

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/confopt"
    "github.com/netdata/netdata/go/plugins/plugin/go.d/pkg/tlscfg"
)

//go:embed "config_schema.json"
var configSchema string

func init() {
    module.Register("zookeeper", module.Creator{
        JobConfigSchema: configSchema,
        Create:          func() module.Module { return New() },
        Config:          func() any { return &Config{} },
    })
}

func New() *Zookeeper {
    return &Zookeeper{
        Config: Config{
            Address: "127.0.0.1:2181",
            Timeout: confopt.Duration(time.Second),
            UseTLS:  false,
        }}
}

type Config struct {
    UpdateEvery      int              `yaml:"update_every,omitempty" json:"update_every"`
    Address          string           `yaml:"address" json:"address"`
    Timeout          confopt.Duration `yaml:"timeout,omitempty" json:"timeout"`
    tlscfg.TLSConfig `yaml:",inline" json:""`
    UseTLS           bool `yaml:"use_tls,omitempty" json:"use_tls"`
}

type (
    Zookeeper struct {
        module.Base
        Config `yaml:",inline" json:""`

        fetcher
    }
    fetcher interface {
        fetch(command string) ([]string, error)
    }
)

func (z *Zookeeper) Configuration() any {
    return z.Config
}

func (z *Zookeeper) Init() error {
    if err := z.verifyConfig(); err != nil {
        z.Error(err)
        return err
    }

    f, err := z.initZookeeperFetcher()
    if err != nil {
        z.Error(err)
        return err
    }
    z.fetcher = f

    return nil
}

func (z *Zookeeper) Check() error {
    mx, err := z.collect()
    if err != nil {
        z.Error(err)
        return err
    }
    if len(mx) == 0 {
        return errors.New("no metrics collected")
    }
    return nil
}

func (z *Zookeeper) Charts() *Charts {
    return charts.Copy()
}

func (z *Zookeeper) Collect() map[string]int64 {
    mx, err := z.collect()
    if err != nil {
        z.Error(err)
    }

    if len(mx) == 0 {
        return nil
    }
    return mx
}

func (z *Zookeeper) Cleanup() {}