| /* |
| * 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 ( |
| "errors" |
| "fmt" |
| "regexp" |
| "strconv" |
| |
| apiModel "github.com/apache/plc4x/plc4go/pkg/api/model" |
| "github.com/apache/plc4x/plc4go/protocols/simulated/readwrite/model" |
| "github.com/apache/plc4x/plc4go/spi/utils" |
| ) |
| |
| type TagType uint8 |
| |
| const ( |
| TagRandom TagType = iota |
| TagState |
| TagStdOut |
| ) |
| |
| func (e TagType) Name() string { |
| switch e { |
| case TagRandom: |
| return "RANDOM" |
| case TagState: |
| return "STATE" |
| case TagStdOut: |
| return "STDOUT" |
| default: |
| return "UNKNOWN" |
| } |
| } |
| |
| type TagHandler struct { |
| simulatedQuery *regexp.Regexp |
| } |
| |
| func NewTagHandler() TagHandler { |
| return TagHandler{ |
| simulatedQuery: regexp.MustCompile(`^(?P<type>\w+)/(?P<name>[a-zA-Z0-9_\\.]+):(?P<dataType>[a-zA-Z0-9]+)(\[(?P<numElements>\d+)])?$`), |
| } |
| } |
| |
| func (m TagHandler) ParseTag(tagAddress string) (apiModel.PlcTag, error) { |
| if match := utils.GetSubgroupMatches(m.simulatedQuery, tagAddress); match != nil { |
| tagTypeName, ok := match["type"] |
| var tagType TagType |
| if ok { |
| switch tagTypeName { |
| case "RANDOM": |
| tagType = TagRandom |
| break |
| case "STATE": |
| tagType = TagState |
| break |
| case "STDOUT": |
| tagType = TagStdOut |
| default: |
| return nil, errors.New("unknown tag type '" + tagTypeName + "'") |
| } |
| } |
| tagName, ok := match["name"] |
| tagDataTypeName, ok := match["dataType"] |
| var tagDataType model.SimulatedDataTypeSizes |
| if ok { |
| tagDataType, _ = model.SimulatedDataTypeSizesByName(tagDataTypeName) |
| if tagDataType == 0 { |
| return nil, errors.New("unknown tag data-type '" + tagDataTypeName + "'") |
| } |
| } |
| tagNumElementsText, ok := match["numElements"] |
| var tagNumElements uint16 |
| if ok && len(tagNumElementsText) > 0 { |
| num, err := strconv.Atoi(tagNumElementsText) |
| if err != nil { |
| return nil, errors.New("invalid size '" + tagNumElementsText + "'") |
| } |
| tagNumElements = uint16(num) |
| } else { |
| tagNumElements = 1 |
| } |
| return NewSimulatedTag(tagType, tagName, tagDataType, tagNumElements), nil |
| } |
| return nil, errors.New("Invalid address format for address '" + tagAddress + "'") |
| } |
| |
| func (m TagHandler) ParseQuery(query string) (apiModel.PlcQuery, error) { |
| return nil, fmt.Errorf("queries not supported") |
| } |