Zabbix

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software: you can redistribute it and/or modify it under the terms of

** the GNU Affero General Public License as published by the Free Software Foundation, version 3.

**

** This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;

** without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

** See the GNU Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

/*

** We use the library go-modbus (goburrow/modbus), which is

** distributed under the terms of the 3-Clause BSD License

** available at https://github.com/goburrow/modbus/blob/master/LICENSE

**/

​

package modbus

​

import (

    "encoding/binary"

    "fmt"

    "time"

​

    named "github.com/BurntSushi/locker"

    "github.com/goburrow/modbus"

    mblib "github.com/goburrow/modbus"

    "golang.zabbix.com/sdk/conf"

    "golang.zabbix.com/sdk/errs"

    "golang.zabbix.com/sdk/plugin"

)

​

// Plugin -

type Plugin struct {

    plugin.Base

    options PluginOptions

}

​

// Session struct

type Session struct {

    // Endpoint is a connection string consisting of a protocol scheme, a host address and a port or seral port name and attributes.

    Endpoint string `conf:"optional"`

​

    // SlaveID of modbus devices.

    SlaveID string `conf:"optional"`

​

    // Timeout of modbus devices.

    Timeout int `conf:"optional"`

}

​

// PluginOptions -

type PluginOptions struct {

    // Sessions stores pre-defined named sets of connections settings.

    Sessions map[string]*Session `conf:"optional"`

}

​

type (

    bits8  uint8

    bits16 uint16

)