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TagHandler.go
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/
TagHandler.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 knxnetip
import (
"encoding/hex"
"regexp"
"strconv"
apiModel "github.com/apache/plc4x/plc4go/pkg/api/model"
driverModel "github.com/apache/plc4x/plc4go/protocols/knxnetip/readwrite/model"
"github.com/apache/plc4x/plc4go/spi/utils"
"github.com/pkg/errors"
)
type TagHandler struct {
groupAddress3Level *regexp.Regexp
groupAddress2Level *regexp.Regexp
groupAddress1Level *regexp.Regexp
deviceQuery *regexp.Regexp
devicePropertyAddress *regexp.Regexp
deviceMemoryAddress *regexp.Regexp
deviceCommunicationObjectQuery *regexp.Regexp
}
func NewTagHandler() TagHandler {
return TagHandler{
groupAddress3Level: regexp.MustCompile(`^(?P<mainGroup>(\d{1,2}|\*|\[(\d{1,2}|\d{1,2}\-\d{1,2})(,(\d{1,2}|\d{1,2}\-\d{1,2}))*]))\/(?P<middleGroup>(\d{1,2}|\*|\[(\d{1,2}|\d{1,2}\-\d{1,2})(,(\d{1,2}|\d{1,2}\-\d{1,2}))*]))\/(?P<subGroup>(\d{1,3}|\*|\[(\d{1,3}|\d{1,3}\-\d{1,3})(,(\d{1,3}|\d{1,3}\-\d{1,3}))*]))(:(?P<datatype>[a-zA-Z_]+))?$`),
groupAddress2Level: regexp.MustCompile(`^(?P<mainGroup>(\d{1,2}|\*|\[(\d{1,2}|\d{1,2}\-\d{1,2})(,(\d{1,2}|\d{1,2}\-\d{1,2}))*]))/(?P<subGroup>(\d{1,4}|\*|\[(\d{1,4}|\d{1,4}\-\d{1,4})(,(\d{1,4}|\d{1,4}\-\d{1,4}))*]))(:(?P<datatype>[a-zA-Z_]+))?$`),
groupAddress1Level: regexp.MustCompile(`^(?P<mainGroup>(\d{1,5}|\*|\[(\d{1,5}|\d{1,5}\-\d{1,5})(,(\d{1,5}|\d{1,5}\-\d{1,5}))*]))(:(?P<datatype>[a-zA-Z_]+))?$`),
deviceQuery: regexp.MustCompile(`^(?P<mainGroup>(\d{1,2}|\*|\[(\d{1,2}|\d{1,2}\-\d{1,2})(,(\d{1,2}|\d{1,2}\-\d{1,2}))*]))\.(?P<middleGroup>(\d{1,2}|\*|\[(\d{1,2}|\d{1,2}\-\d{1,2})(,(\d{1,2}|\d{1,2}\-\d{1,2}))*]))\.(?P<subGroup>(\d{1,3}|\*|\[(\d{1,3}|\d{1,3}\-\d{1,3})(,(\d{1,3}|\d{1,3}\-\d{1,3}))*]))$`),
devicePropertyAddress: regexp.MustCompile(`^(?P<mainGroup>\d{1,2})\.(?P<middleGroup>\d)\.(?P<subGroup>\d{1,3})#(?P<objectId>\d{1,3})\/(?P<propertyId>\d{1,3})(\/(?P<propertyIndex>\d{1,4}))?(\[(?P<numElements>\d{1,2})])?$`),
deviceMemoryAddress: regexp.MustCompile(`^(?P<mainGroup>\d{1,2})\.(?P<middleGroup>\d)\.(?P<subGroup>\d{1,3})#(?P<address>[0-9a-fA-F]{1,8})(:(?P<datatype>[a-zA-Z_]+)(\[(?P<numElements>\d+)])?)?$`),
deviceCommunicationObjectQuery: regexp.MustCompile(`^(?P<mainGroup>\d{1,2})\.(?P<middleGroup>\d)\.(?P<subGroup>\d{1,3})#com-obj$`),
}
}
func (m TagHandler) ParseTag(tagAddress string) (apiModel.PlcTag, error) {
if match := utils.GetSubgroupMatches(m.groupAddress1Level, tagAddress); match != nil {
tagTypeName, ok := match["datatype"]
var tagType driverModel.KnxDatapointType
if ok {
tagType, ok = driverModel.KnxDatapointTypeByName(tagTypeName)
if !ok {
return nil, errors.Errorf("Unknown type %s", tagTypeName)
}
}
return NewGroupAddress1LevelPlcTag(match["mainGroup"], &tagType), nil
} else if match := utils.GetSubgroupMatches(m.groupAddress2Level, tagAddress); match != nil {
tagTypeName, ok := match["datatype"]
var tagType driverModel.KnxDatapointType
if ok {
tagType, ok = driverModel.KnxDatapointTypeByName(tagTypeName)
if !ok {
return nil, errors.Errorf("Unknown type %s", tagTypeName)
}
}
return NewGroupAddress2LevelPlcTag(match["mainGroup"], match["subGroup"], &tagType), nil
} else if match := utils.GetSubgroupMatches(m.groupAddress3Level, tagAddress); match != nil {
tagTypeName, ok := match["datatype"]
var tagType driverModel.KnxDatapointType
if ok {
tagType, ok = driverModel.KnxDatapointTypeByName(tagTypeName)
if !ok {
return nil, errors.Errorf("Unknown type %s", tagTypeName)
}
}
return NewGroupAddress3LevelPlcTag(match["mainGroup"], match["middleGroup"], match["subGroup"], &tagType), nil
} else if match := utils.GetSubgroupMatches(m.devicePropertyAddress, tagAddress); match != nil {
mainGroup, _ := strconv.ParseUint(match["mainGroup"], 10, 8)
middleGroup, _ := strconv.ParseUint(match["middleGroup"], 10, 8)
subGroup, _ := strconv.ParseUint(match["subGroup"], 10, 8)
objectId, _ := strconv.ParseUint(match["objectId"], 10, 8)
propertyId, _ := strconv.ParseUint(match["propertyId"], 10, 8)
propertyIndex := uint64(1)
propertyInd, ok := match["propertyIndex"]
if ok && len(propertyInd) > 0 {
propertyIndex, _ = strconv.ParseUint(propertyInd, 10, 16)
}
numberOfElements := uint64(1)
numElements, ok := match["numElements"]
if ok && len(numElements) > 0 {
numberOfElements, _ = strconv.ParseUint(numElements, 10, 8)
}
return NewDevicePropertyAddressPlcTag(
uint8(mainGroup), uint8(middleGroup), uint8(subGroup), uint8(objectId), uint8(propertyId),
uint16(propertyIndex), uint8(numberOfElements)), nil
} else if match := utils.GetSubgroupMatches(m.deviceMemoryAddress, tagAddress); match != nil {
tagTypeName, ok := match["datatype"]
// This is a 0-255 valued 1-byte value.
tagType := driverModel.KnxDatapointType_DPT_DecimalFactor
if ok && len(tagTypeName) > 0 {
tagType, _ = driverModel.KnxDatapointTypeByName(tagTypeName)
}
mainGroup, _ := strconv.ParseUint(match["mainGroup"], 10, 8)
middleGroup, _ := strconv.ParseUint(match["middleGroup"], 10, 8)
subGroup, _ := strconv.ParseUint(match["subGroup"], 10, 8)
addressData, _ := hex.DecodeString(match["address"])
var address uint16
if len(addressData) == 2 {
address = uint16(addressData[0])<<8 | uint16(addressData[1])
} else if len(addressData) == 1 {
address = uint16(addressData[0])
} else {
return nil, errors.New("invalid address: " + match["address"])
}
numberOfElements := uint64(1)
numElements, ok := match["numElements"]
if ok && len(numElements) > 0 {
numberOfElements, _ = strconv.ParseUint(numElements, 10, 8)
}
return NewDeviceMemoryAddressPlcTag(uint8(mainGroup), uint8(middleGroup), uint8(subGroup), address, uint8(numberOfElements), &tagType), nil
} else if match := utils.GetSubgroupMatches(m.deviceCommunicationObjectQuery, tagAddress); match != nil {
mainGroup, _ := strconv.ParseUint(match["mainGroup"], 10, 8)
middleGroup, _ := strconv.ParseUint(match["middleGroup"], 10, 8)
subGroup, _ := strconv.ParseUint(match["subGroup"], 10, 8)
return NewCommunicationObjectQuery(
uint8(mainGroup), uint8(middleGroup), uint8(subGroup)), nil
}
return nil, errors.New("Invalid address format for tag '" + tagAddress + "'")
}
func (m TagHandler) ParseQuery(query string) (apiModel.PlcQuery, error) {
if match := utils.GetSubgroupMatches(m.deviceQuery, query); match != nil {
return NewDeviceQuery(
match["mainGroup"], match["middleGroup"], match["subGroup"]), nil
}
return nil, errors.New("Invalid address format for query '" + query + "'")
}