282 lines
8.8 KiB
Go
282 lines
8.8 KiB
Go
package service
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import (
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"context"
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"errors"
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"fmt"
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"log/slog"
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"strings"
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"time"
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"joylink.club/iot/modbus"
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"joylink.club/iot/service/model"
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sproto "joylink.club/iot/service/proto"
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)
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// Modbus驱动采集服务
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type modbusDcService struct {
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config *sproto.ModbusConfig
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cli modbus.MasterClient
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dc model.DC
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cancel context.CancelFunc
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}
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func NewModbusDcService(config *sproto.ModbusConfig, dc model.DC) (IotService, error) {
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if err := checkConfig(config); err != nil {
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return nil, err
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}
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_, ok := modbus.GetClient(config.Url)
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if ok {
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return nil, fmt.Errorf("modbus客户端已存在,url=%s", config.Url)
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}
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cli, err := modbus.NewClient(&modbus.ClientConfig{
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Url: config.Url,
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Timeout: config.Timeout,
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})
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if err != nil {
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return nil, errors.Join(err, fmt.Errorf("modbus客户端创建失败,url=%s", config.Url))
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}
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cli.SetUnitId(uint8(config.UnitId))
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cli.SetEndianness(convertEndianness(config.Endianness))
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cli.Start()
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s := &modbusDcService{
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config: config,
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cli: cli,
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dc: dc,
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}
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s.initOnUpdateTask()
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ctx, cancel := context.WithCancel(context.Background())
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go s.run(ctx)
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s.cancel = cancel
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return s, nil
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}
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func (m *modbusDcService) initOnUpdateTask() {
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mapping := m.config.Mapping
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for _, mdm := range mapping {
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if mdm.WriteStrategy == sproto.Modbus_OnUpdate && isWriteFunction(mdm.Function) {
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et := model.DCE_Drive_Update
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if mdm.Type == sproto.DataType_CollectTable {
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et = model.DCE_Collect_Update
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}
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m.dc.On(et, func(d model.DC) {
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if !m.cli.IsConnected() {
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slog.Warn("Modbus驱动采集服务数据更新写入失败,modbus客户端未连接", "url", m.config.Url, "Function", mdm.Function)
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return
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}
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switch mdm.Function {
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case sproto.Modbus_WriteCoil, sproto.Modbus_WriteCoils, sproto.Modbus_RWCoils:
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err := m.cli.WriteCoils(uint16(mdm.Addr), m.GetDcBits(mdm))
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if err != nil {
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slog.Error("Modbus驱动采集服务写入线圈失败", "url", m.config.Url, "error", err, "Function", mdm.Function)
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} else {
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slog.Info("Modbus驱动采集服务写入线圈成功", "url", m.config.Url, "Function", mdm.Function)
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}
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case sproto.Modbus_WriteRegister, sproto.Modbus_WriteRegisters, sproto.Modbus_RWRegisters:
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err := m.cli.WriteRegisterBytes(uint16(mdm.Addr), m.GetDcBytes(mdm))
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if err != nil {
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slog.Error("Modbus驱动采集服务写入寄存器失败", "url", m.config.Url, "error", err, "Function", mdm.Function)
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} else {
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slog.Info("Modbus驱动采集服务写入寄存器成功", "url", m.config.Url, "Function", mdm.Function)
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}
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}
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})
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}
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}
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}
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func isWriteFunction(modbus_Function sproto.Modbus_Function) bool {
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return modbus_Function == sproto.Modbus_WriteCoil ||
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modbus_Function == sproto.Modbus_WriteCoils ||
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modbus_Function == sproto.Modbus_WriteRegister ||
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modbus_Function == sproto.Modbus_WriteRegisters ||
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modbus_Function == sproto.Modbus_RWCoils ||
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modbus_Function == sproto.Modbus_RWRegisters
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}
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func (m *modbusDcService) run(ctx context.Context) {
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for {
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select {
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case <-ctx.Done():
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slog.Info("Modbus驱动采集服务退出", "url", m.config.Url)
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return
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default:
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}
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m.mappingTaskExecute()
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time.Sleep(time.Millisecond * time.Duration(m.config.Interval))
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}
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}
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func (m *modbusDcService) mappingTaskExecute() {
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if m.cli.IsConnected() {
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for _, mdm := range m.config.Mapping {
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switch mdm.Function {
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case sproto.Modbus_ReadCoil, sproto.Modbus_RWCoils:
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data, err := m.cli.ReadCoil(uint16(mdm.Addr), uint16(mdm.Quantity))
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if err != nil {
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slog.Error("Modbus驱动采集服务读取线圈失败", "url", m.config.Url, "error", err)
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continue
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}
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err = m.updateDcByBits(mdm, data)
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if err != nil {
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slog.Error("Modbus驱动采集服务更新驱采数据失败", "url", m.config.Url, "error", err)
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continue
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}
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case sproto.Modbus_ReadDiscreteInput:
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data, err := m.cli.ReadDiscreteInput(uint16(mdm.Addr), uint16(mdm.Quantity))
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if err != nil {
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slog.Error("Modbus驱动采集服务读取离散输入失败", "url", m.config.Url, "error", err)
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continue
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}
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err = m.updateDcByBits(mdm, data)
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if err != nil {
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slog.Error("Modbus驱动采集服务更新驱采数据失败", "url", m.config.Url, "error", err)
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continue
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}
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case sproto.Modbus_ReadHoldingRegister, sproto.Modbus_RWRegisters:
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data, err := m.cli.ReadHoldingRegisterBytes(uint16(mdm.Addr), uint16(mdm.Quantity*2))
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if err != nil {
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slog.Error("Modbus驱动采集服务读取保持寄存器失败", "url", m.config.Url, "error", err)
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continue
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}
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err = m.updateDcByBytes(mdm, data)
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if err != nil {
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slog.Error("Modbus驱动采集服务更新驱采数据失败", "url", m.config.Url, "error", err)
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continue
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}
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case sproto.Modbus_ReadInputRegister:
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data, err := m.cli.ReadInputRegisterBytes(uint16(mdm.Addr), uint16(mdm.Quantity*2))
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if err != nil {
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slog.Error("Modbus驱动采集服务读取输入寄存器失败", "url", m.config.Url, "error", err)
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continue
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}
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err = m.updateDcByBytes(mdm, data)
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if err != nil {
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slog.Error("Modbus驱动采集服务更新驱采数据失败", "url", m.config.Url, "error", err)
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continue
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}
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case sproto.Modbus_WriteCoil:
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if mdm.WriteStrategy == sproto.Modbus_OnScheduled { // 定时写
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bits := m.GetDcBits(mdm)
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err := m.cli.WriteCoil(uint16(mdm.Addr), bits[0])
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if err != nil {
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slog.Error("Modbus驱动采集服务写单线圈失败", "url", m.config.Url, "error", err)
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continue
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}
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}
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case sproto.Modbus_WriteCoils:
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if mdm.WriteStrategy == sproto.Modbus_OnScheduled { // 定时写
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bits := m.GetDcBits(mdm)
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err := m.cli.WriteCoils(uint16(mdm.Addr), bits)
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if err != nil {
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slog.Error("Modbus驱动采集服务写多线圈失败", "url", m.config.Url, "error", err)
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continue
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}
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}
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case sproto.Modbus_WriteRegister:
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if mdm.WriteStrategy == sproto.Modbus_OnScheduled { // 定时写
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data := m.GetDcBytes(mdm)
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err := m.cli.WriteRegisterBytes(uint16(mdm.Addr), data)
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if err != nil {
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slog.Error("Modbus驱动采集服务写单寄存器失败", "url", m.config.Url, "error", err)
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continue
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}
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}
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case sproto.Modbus_WriteRegisters:
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if mdm.WriteStrategy == sproto.Modbus_OnScheduled { // 定时写
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data := m.GetDcBytes(mdm)
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err := m.cli.WriteRegisterBytes(uint16(mdm.Addr), data)
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if err != nil {
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slog.Error("Modbus驱动采集服务写多寄存器失败", "url", m.config.Url, "error", err)
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continue
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}
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}
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}
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}
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} else {
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slog.Error("Modbus驱动采集服务映射任务执行失败,Modbus未连接", "url", m.config.Url)
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}
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}
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func (m *modbusDcService) GetDcBits(mdm *sproto.ModbusDcMapping) []bool {
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switch mdm.Type {
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case sproto.DataType_CollectTable: // 采集数据
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return m.dc.GetCollectBits(mdm.Start, mdm.Quantity)
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case sproto.DataType_DriveTable: // 驱动数据
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return m.dc.GetDriveBits(mdm.Start, mdm.Quantity)
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default:
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panic("未知数据类型")
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}
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}
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func (m *modbusDcService) GetDcBytes(mdm *sproto.ModbusDcMapping) []byte {
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switch mdm.Type {
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case sproto.DataType_CollectTable: // 采集数据
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return m.dc.GetCollectBytes(mdm.Start, mdm.Quantity*2)
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case sproto.DataType_DriveTable: // 驱动数据
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return m.dc.GetDriveBytes(mdm.Start, mdm.Quantity*2)
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default:
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panic("未知数据类型")
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}
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}
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func (m *modbusDcService) updateDcByBits(mdm *sproto.ModbusDcMapping, bits []bool) error {
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switch mdm.Type {
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case sproto.DataType_CollectTable: // 采集数据
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return m.dc.UpdateCollectByBits(mdm.Start, bits)
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case sproto.DataType_DriveTable: // 驱动数据
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return m.dc.UpdateDriveByBits(mdm.Start, bits)
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}
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return nil
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}
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func (m *modbusDcService) updateDcByBytes(mdm *sproto.ModbusDcMapping, bytes []byte) error {
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switch mdm.Type {
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case sproto.DataType_CollectTable: // 采集数据
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return m.dc.UpdateCollectByBytes(mdm.Start, bytes)
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case sproto.DataType_DriveTable: // 驱动数据
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return m.dc.UpdateDriveByBytes(mdm.Start, bytes)
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}
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return nil
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}
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func checkConfig(config *sproto.ModbusConfig) error {
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if config.Url == "" {
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return fmt.Errorf("Modbus配置未设置url")
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}
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if !strings.HasPrefix(config.Url, "tcp") {
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return fmt.Errorf("Modbus配置url必须以tcp开头")
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}
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if config.UnitId == 0 {
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return fmt.Errorf("Modbus配置未设置unitId")
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}
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if config.Interval == 0 {
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return fmt.Errorf("Modbus配置未设置interval")
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}
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if len(config.Mapping) == 0 {
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return fmt.Errorf("Modbus配置无映射配置")
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}
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return nil
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}
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func (m *modbusDcService) Start() error {
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return nil
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}
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func (m *modbusDcService) Stop() error {
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m.cancel()
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modbus.DeleteClient(m.config.Url)
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return nil
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}
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func convertEndianness(endianness sproto.Modbus_Endianness) modbus.Endianness {
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switch endianness {
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case sproto.Modbus_BigEndian:
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return modbus.BigEndian
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case sproto.Modbus_LittleEndian:
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return modbus.LittleEndian
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}
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return modbus.BigEndian
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}
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