firehol/netdata

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

package rethinkdb

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"
)

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

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

func New() *Rethinkdb {
    return &Rethinkdb{
        Config: Config{
            Address: "127.0.0.1:28015",
            Timeout: confopt.Duration(time.Second * 1),
        },

        charts:      clusterCharts.Copy(),
        newConn:     newRethinkdbConn,
        seenServers: make(map[string]bool),
    }
}

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"`
    Username    string           `yaml:"username,omitempty" json:"username"`
    Password    string           `yaml:"password,omitempty" json:"password"`
}

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

        charts *module.Charts

        newConn func(cfg Config) (rdbConn, error)
        rdb     rdbConn

        seenServers map[string]bool
    }
)

func (r *Rethinkdb) Configuration() any {
    return r.Config
}

func (r *Rethinkdb) Init() error {
    if r.Address == "" {
        r.Error("address is not set")
        return errors.New("address is not set")
    }
    return nil
}

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

func (r *Rethinkdb) Charts() *module.Charts {
    return r.charts
}

func (r *Rethinkdb) Collect() map[string]int64 {
    ms, err := r.collect()
    if err != nil {
        r.Error(err)
    }

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

func (r *Rethinkdb) Cleanup() {
    if r.rdb != nil {
        if err := r.rdb.close(); err != nil {
            r.Warningf("cleanup: error on closing client [%s]: %v", r.Address, err)
        }
        r.rdb = nil
    }
}