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Device.go
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Device.go
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package simulated
import (
"context"
"github.com/rs/zerolog"
"math/rand"
apiValues "github.com/apache/plc4x/plc4go/pkg/api/values"
readWriteModel "github.com/apache/plc4x/plc4go/protocols/simulated/readwrite/model"
"github.com/apache/plc4x/plc4go/spi/options"
)
type Device struct {
Name string
State map[simulatedTag]*apiValues.PlcValue
passLogToModel bool
log zerolog.Logger
}
func NewDevice(name string, _options ...options.WithOption) *Device {
passLoggerToModel, _ := options.ExtractPassLoggerToModel(_options...)
customLogger := options.ExtractCustomLoggerOrDefaultToGlobal(_options...)
return &Device{
Name: name,
State: make(map[simulatedTag]*apiValues.PlcValue),
passLogToModel: passLoggerToModel,
log: customLogger,
}
}
func (d *Device) Get(tag simulatedTag) *apiValues.PlcValue {
switch tag.TagType {
case TagState:
return d.State[tag]
case TagRandom:
return d.getRandomValue(tag)
}
return nil
}
func (d *Device) Set(tag simulatedTag, value *apiValues.PlcValue) {
switch tag.TagType {
case TagState:
d.State[tag] = value
break
case TagRandom:
// TODO: Doesn'd really make any sense to write a random
break
case TagStdOut:
d.log.Debug().
Str("name", tag.Name).
Stringer("value", *value).
Msg("TEST PLC STDOUT [%s]: %s")
break
}
}
func (d *Device) getRandomValue(tag simulatedTag) *apiValues.PlcValue {
size := tag.GetDataTypeSize().DataTypeSize()
data := make([]byte, uint16(size)*tag.Quantity)
rand.Read(data)
ctxForModel := options.GetLoggerContextForModel(context.TODO(), d.log, options.WithPassLoggerToModel(d.passLogToModel))
plcValue, err := readWriteModel.DataItemParse(ctxForModel, data, tag.DataTypeSize.String(), tag.Quantity)
if err != nil {
d.log.Err(err).Msg("Unable to parse random bytes")
return nil
}
return &plcValue
}