Class: MQTT::Homie::Property
Constant Summary
Constants inherited from Base
Instance Attribute Summary collapse
-
#datatype ⇒ Object
readonly
Returns the value of attribute datatype.
-
#format ⇒ Object
Returns the value of attribute format.
-
#node ⇒ Object
readonly
Returns the value of attribute node.
-
#unit ⇒ Object
Returns the value of attribute unit.
-
#value ⇒ Object
Returns the value of attribute value.
Attributes inherited from Base
Instance Method Summary collapse
- #device ⇒ Object
- #full_name ⇒ Object
-
#initialize(node, id, name, datatype, value = nil, format: nil, retained: true, unit: nil, &block) ⇒ Property
constructor
A new instance of Property.
- #inspect ⇒ Object
- #mqtt ⇒ Object
- #publish ⇒ Object
- #range ⇒ Object
- #retained? ⇒ Boolean
- #set(value) ⇒ Object
- #settable? ⇒ Boolean
- #subscribe ⇒ Object
- #topic ⇒ Object
- #unpublish ⇒ Object
Constructor Details
#initialize(node, id, name, datatype, value = nil, format: nil, retained: true, unit: nil, &block) ⇒ Property
Returns a new instance of Property.
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# File 'lib/mqtt/homie/property.rb', line 8 def initialize(node, id, name, datatype, value = nil, format: nil, retained: true, unit: nil, &block) raise ArgumentError, "Invalid Homie datatype" unless %i[string integer float boolean enum color datetime duration].include?(datatype) raise ArgumentError, "retained must be boolean" unless [true, false].include?(retained) format = format.join(",") if format.is_a?(Array) && datatype == :enum if %i[integer float].include?(datatype) && format.is_a?(Range) raise ArgumentError "only inclusive ranges are supported" if format.exclude_end? format = "#{format.begin}:#{format.end}" end raise ArgumentError, "format must be nil or a string" unless format.nil? || format.is_a?(String) raise ArgumentError, "unit must be nil or a string" unless unit.nil? || unit.is_a?(String) raise ArgumentError, "format is required for enums" if datatype == :enum && format.nil? raise ArgumentError, "format is required for colors" if datatype == :color && format.nil? if datatype == :color && !%w[rgb hsv].include?(format.to_s) raise ArgumentError, "format must be either rgb or hsv for colors" end if !value.nil? && !retained raise ArgumentError, "an initial value cannot be provided for a non-retained property" end super(id, name) @node = node @datatype = datatype @format = format @retained = retained @unit = unit @value = value @published = false @block = block end |
Instance Attribute Details
#datatype ⇒ Object (readonly)
Returns the value of attribute datatype.
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# File 'lib/mqtt/homie/property.rb', line 6 def datatype @datatype end |
#format ⇒ Object
Returns the value of attribute format.
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# File 'lib/mqtt/homie/property.rb', line 6 def format @format end |
#node ⇒ Object (readonly)
Returns the value of attribute node.
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# File 'lib/mqtt/homie/property.rb', line 6 def node @node end |
#unit ⇒ Object
Returns the value of attribute unit.
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# File 'lib/mqtt/homie/property.rb', line 6 def unit @unit end |
#value ⇒ Object
Returns the value of attribute value.
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# File 'lib/mqtt/homie/property.rb', line 6 def value @value end |
Instance Method Details
#device ⇒ Object
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# File 'lib/mqtt/homie/property.rb', line 60 def device node.device end |
#full_name ⇒ Object
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# File 'lib/mqtt/homie/property.rb', line 56 def full_name "#{node.full_name} #{name}" end |
#inspect ⇒ Object
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# File 'lib/mqtt/homie/property.rb', line 42 def inspect result = +"#<MQTT::Homie::Property #{topic} name=#{full_name.inspect}, datatype=#{datatype.inspect}" result << ", format=#{format.inspect}" if format result << ", unit=#{unit.inspect}" if unit result << ", settable=true" if settable? result << if retained? ", value=#{value.inspect}" else ", retained=false" end result << ">" result.freeze end |
#mqtt ⇒ Object
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# File 'lib/mqtt/homie/property.rb', line 161 def mqtt node.mqtt end |
#publish ⇒ Object
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# File 'lib/mqtt/homie/property.rb', line 165 def publish return if @published mqtt.batch_publish do mqtt.publish("#{topic}/$name", name, retain: true, qos: 1) mqtt.publish("#{topic}/$datatype", datatype.to_s, retain: true, qos: 1) mqtt.publish("#{topic}/$format", format, retain: true, qos: 1) if format mqtt.publish("#{topic}/$settable", "true", retain: true, qos: 1) if settable? mqtt.publish("#{topic}/$retained", "false", retain: true, qos: 1) unless retained? mqtt.publish("#{topic}/$unit", unit, retain: true, qos: 1) if unit publish_value unless value.nil? subscribe end @published = true end |
#range ⇒ Object
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# File 'lib/mqtt/homie/property.rb', line 105 def range return nil unless format case datatype when :enum then format.split(",") when :integer then Range.new(*format.split(":").map(&:to_i)) when :float then Range.new(*format.split(":").map(&:to_f)) else; raise MethodNotImplemented end end |
#retained? ⇒ Boolean
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# File 'lib/mqtt/homie/property.rb', line 68 def retained? @retained end |
#set(value) ⇒ Object
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# File 'lib/mqtt/homie/property.rb', line 116 def set(value) case datatype when :boolean return unless %w[true false].include?(value) value = value == "true" when :integer return unless /^-?\d+$/.match?(value) value = value.to_i return if format && !range.include?(value) when :float return unless /^-?(?:\d+|\d+\.|\.\d+|\d+\.\d+)(?:[eE]-?\d+)?$/.match?(value) value = value.to_f return if format && !range.include?(value) when :enum return unless range.include?(value) when :color return unless /^\d{1,3},\d{1,3},\d{1,3}$/.match?(value) value = value.split(",").map(&:to_i) case format when "rgb" return if value.max > 255 when "hsv" return if value.first > 360 || value[1..2].max > 100 end when :datetime begin value = Time.parse(value) rescue ArgumentError return end when :duration begin value = ActiveSupport::Duration.parse(value) rescue ActiveSupport::Duration::ISO8601Parser::ParsingError return end end @block.arity == 2 ? @block.call(value, self) : @block.call(value) end |
#settable? ⇒ Boolean
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# File 'lib/mqtt/homie/property.rb', line 72 def settable? !!@block end |
#subscribe ⇒ Object
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# File 'lib/mqtt/homie/property.rb', line 182 def subscribe mqtt.subscribe("#{topic}/set") if settable? end |
#topic ⇒ Object
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# File 'lib/mqtt/homie/property.rb', line 64 def topic "#{node.topic}/#{id}" end |
#unpublish ⇒ Object
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# File 'lib/mqtt/homie/property.rb', line 186 def unpublish return unless @published @published = false mqtt.publish("#{topic}/$name", retain: true, qos: 0) mqtt.publish("#{topic}/$datatype", retain: true, qos: 0) mqtt.publish("#{topic}/$format", retain: true, qos: 0) if format mqtt.publish("#{topic}/$settable", retain: true, qos: 0) if settable? mqtt.publish("#{topic}/$retained", retain: true, qos: 0) unless retained? mqtt.publish("#{topic}/$unit", retain: true, qos: 0) if unit mqtt.unsubscribe("#{topic}/set") if settable? mqtt.publish(topic, retain: retained?, qos: 0) if !value.nil? && retained? end |