firehol/netdata

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

package sensors

import (
    _ "embed"
    "errors"
    "time"

    "github.com/netdata/netdata/go/plugins/plugin/go.d/agent/module"
    "github.com/netdata/netdata/go/plugins/plugin/go.d/modules/sensors/lmsensors"
    "github.com/netdata/netdata/go/plugins/plugin/go.d/pkg/confopt"
)

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

func init() {
    module.Register("sensors", module.Creator{
        JobConfigSchema: configSchema,
        Defaults: module.Defaults{
            UpdateEvery: 10,
        },
        Create: func() module.Module { return New() },
        Config: func() any { return &Config{} },
    })
}

func New() *Sensors {
    return &Sensors{
        Config: Config{
            BinaryPath: "/usr/bin/sensors",
            Timeout:    confopt.Duration(time.Second * 2),
        },
        charts:  &module.Charts{},
        sensors: make(map[string]bool),
    }
}

type Config struct {
    UpdateEvery int              `yaml:"update_every,omitempty" json:"update_every"`
    Timeout     confopt.Duration `yaml:"timeout,omitempty" json:"timeout"`
    BinaryPath  string           `yaml:"binary_path" json:"binary_path"`
}

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

        charts *module.Charts

        exec sensorsBinary
        sc   sysfsScanner

        sensors map[string]bool
    }
    sensorsBinary interface {
        sensorsInfo() ([]byte, error)
    }
    sysfsScanner interface {
        Scan() ([]*lmsensors.Device, error)
    }
)

func (s *Sensors) Configuration() any {
    return s.Config
}

func (s *Sensors) Init() error {
    if sb, err := s.initSensorsBinary(); err != nil {
        s.Infof("sensors exec initialization: %v", err)
    } else if sb != nil {
        s.exec = sb
    }

    sc := lmsensors.New()
    sc.Logger = s.Logger
    s.sc = sc

    return nil
}

func (s *Sensors) Check() error {
    mx, err := s.collect()
    if err != nil {
        s.Error(err)
        return err
    }

    if len(mx) == 0 {
        return errors.New("no metrics collected")
    }

    return nil
}

func (s *Sensors) Charts() *module.Charts {
    return s.charts
}

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

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

    return mx
}

func (s *Sensors) Cleanup() {}