サポート終了通知: 2026 年 5 月 20 日、 AWS は のサポートを終了します AWS IoT Events。2026 年 5 月 20 日以降、 AWS IoT Events コンソールまたは AWS IoT Events リソースにアクセスできなくなります。詳細については、[AWS IoT Events 「サポート終了](https://docs.aws.amazon.com/iotevents/latest/developerguide/iotevents-end-of-support.html)」を参照してください。

翻訳は機械翻訳により提供されています。提供された翻訳内容と英語版の間で齟齬、不一致または矛盾がある場合、英語版が優先します。

# AWS IoT Events ディテクターモデル定義を作成する
<a name="iotevents-commented-example-detector-model"></a>

`'areaDetectorModel'` の例には、コメントがインラインで含まれています。

CLI コマンド:

```
aws iotevents create-detector-model --cli-input-json file://areaDetectorModel.json
```

ファイル: `areaDetectorModel.json`

```
{
  "detectorModelName": "areaDetectorModel",
  "detectorModelDefinition": {
    "states": [
      {
        "stateName": "start",
        // In the 'start' state we set up the operation parameters of the new detector instance. 
        //   We get here when the first input message arrives. If that is a 'seedTemperatureInput' 
        //   message, we save the operation parameters, then transition to the 'idle' state. If 
        //   the first message is a 'temperatureInput', we wait here until we get a 
        //   'seedTemperatureInput' input to ensure our operation parameters are set. We can 
        //   also reenter this state using the 'BatchUpdateDetector' API. This enables us to
        //   reset the operation parameters without needing to delete the detector instance.
        "onEnter": {
          "events": [
            {
              "eventName": "prepare",
              "condition": "true",
              "actions": [
                {
                  "setVariable": {
                    // initialize 'sensorId' to an invalid value (0) until an actual sensor reading 
                    //   arrives
                    "variableName": "sensorId",
                    "value": "0"
                  }
                },
                {
                  "setVariable": {
                    // initialize 'reportedTemperature' to an invalid value (0.1) until an actual 
                    //   sensor reading arrives
                    "variableName": "reportedTemperature",
                    "value": "0.1"
                  }
                },
                {
                  "setVariable": {
                    // When using 'BatchUpdateDetector' to re-enter this state, this variable should 
                    //   be set to true.
                    "variableName": "resetMe",
                    "value": "false"
                  }
                }
              ]
            }
          ]
        },
        "onInput": {
          "transitionEvents": [
            {
              "eventName": "initialize",
              "condition": "$input.seedTemperatureInput.sensorCount > 0",
              // When a 'seedTemperatureInput' message with a valid 'sensorCount' is received,
              //   we use it to set the operational parameters for the area to be monitored.
              "actions": [
                { 
                  "setVariable": {
                    "variableName": "rangeHigh",
                    "value": "$input.seedTemperatureInput.rangeHigh"
                  }
                },
                { 
                  "setVariable": {
                    "variableName": "rangeLow",
                    "value": "$input.seedTemperatureInput.rangeLow"
                  }
                },
                { 
                  "setVariable": {
                    "variableName": "desiredTemperature",
                    "value": "$input.seedTemperatureInput.desiredTemperature"
                  }
                },
                { 
                  "setVariable": {
                    // Assume we're at the desired temperature when we start.
                    "variableName": "averageTemperature",
                    "value": "$input.seedTemperatureInput.desiredTemperature"
                  }
                },
                { 
                  "setVariable": {
                    "variableName": "allowedError",
                    "value": "$input.seedTemperatureInput.allowedError"
                  }
                },
                {
                  "setVariable": {
                    "variableName": "anomalousHigh",
                    "value": "$input.seedTemperatureInput.anomalousHigh"
                  }
                },
                {
                  "setVariable": {
                    "variableName": "anomalousLow",
                    "value": "$input.seedTemperatureInput.anomalousLow"
                  }
                },
                {
                  "setVariable": {
                    "variableName": "sensorCount",
                    "value": "$input.seedTemperatureInput.sensorCount"
                  }
                },
                {
                  "setVariable": {
                    "variableName": "noDelay",
                    "value": "$input.seedTemperatureInput.noDelay == true"
                  }
                }
              ],
              "nextState": "idle"
            },
            {
              "eventName": "reset",
              "condition": "($variable.resetMe == true) && ($input.temperatureInput.sensorData.temperature < $variable.anomalousHigh && $input.temperatureInput.sensorData.temperature > $variable.anomalousLow)",
              // This event is triggered if we have reentered the 'start' state using the 
              //   'BatchUpdateDetector' API with 'resetMe' set to true. When we reenter using
              //   'BatchUpdateDetector' we do not automatically continue to the 'idle' state, but
              //   wait in 'start' until the next input message arrives. This event enables us to 
              //   transition to 'idle' on the next valid 'temperatureInput' message that arrives.
              "actions": [
                {
                  "setVariable": {
                    "variableName": "averageTemperature",
                    "value": "((($variable.averageTemperature * ($variable.sensorCount - 1)) + $input.temperatureInput.sensorData.temperature) / $variable.sensorCount)"
                  }
                }
              ],
              "nextState": "idle"
            }
          ]
        },
        "onExit": {
          "events": [
            {
              "eventName": "resetHeatCool",
              "condition": "true",
              // Make sure the heating and cooling units are off before entering 'idle'.
              "actions": [
                {
                  "sns": {
                    "targetArn": "arn:aws:sns:us-west-2:123456789012:heatOff"
                  }
                },
                {
                  "sns": {
                    "targetArn": "arn:aws:sns:us-west-2:123456789012:coolOff"
                  }
                },
                {
                  "iotTopicPublish": {
                    "mqttTopic": "hvac/Heating/Off"
                  }
                },
                {
                  "iotTopicPublish": {
                    "mqttTopic": "hvac/Cooling/Off"
                  }
                }
              ]
            }
          ]
        }
      },


      {
        "stateName": "idle",
        "onInput": {
          "events": [
            {
              "eventName": "whatWasInput",
              "condition": "true",
              // By storing the 'sensorId' and the 'temperature' in variables, we make them 
              //   available in any messages we send out to report anomalies, spikes, or just
              //   if needed for debugging.
              "actions": [
                {
                  "setVariable": {
                    "variableName": "sensorId",
                    "value": "$input.temperatureInput.sensorId"
                  }
                },
                {
                  "setVariable": {
                    "variableName": "reportedTemperature",
                    "value": "$input.temperatureInput.sensorData.temperature"
                  }
                }
              ]
            },
            {
              "eventName": "changeDesired",
              "condition": "$input.seedTemperatureInput.desiredTemperature != $variable.desiredTemperature",
              // This event enables us to change the desired temperature at any time by sending a
              //   'seedTemperatureInput' message. But note that other operational parameters are not
              //   read or changed.
              "actions": [
                { 
                  "setVariable": {
                    "variableName": "desiredTemperature",
                    "value": "$input.seedTemperatureInput.desiredTemperature"
                  }
                }
              ]
            },
            {
              "eventName": "calculateAverage",
              "condition": "$input.temperatureInput.sensorData.temperature < $variable.anomalousHigh && $input.temperatureInput.sensorData.temperature > $variable.anomalousLow",
              // If a valid temperature reading arrives, we use it to update the average temperature.
              //   For simplicity, we assume our sensors will be sending updates at about the same rate,
              //   so we can calculate an approximate average by giving equal weight to each reading we receive.
              "actions": [
                {
                  "setVariable": {
                    "variableName": "averageTemperature",
                    "value": "((($variable.averageTemperature * ($variable.sensorCount - 1)) + $input.temperatureInput.sensorData.temperature) / $variable.sensorCount)"
                  }
                }
              ]
            }
          ],
          "transitionEvents": [
            {
              "eventName": "anomalousInputArrived",
              "condition": "$input.temperatureInput.sensorData.temperature >= $variable.anomalousHigh || $input.temperatureInput.sensorData.temperature <= $variable.anomalousLow",
              // When an anomalous reading arrives, send an MQTT message, but stay in the current state.
              "actions": [
                { 
                  "iotTopicPublish": {
                    "mqttTopic": "temperatureSensor/anomaly"
                  }
                }
              ],
              "nextState": "idle"
            },

            {
              "eventName": "highTemperatureSpike",
              "condition": "$input.temperatureInput.sensorData.temperature > $variable.rangeHigh",
              // When even a single temperature reading arrives that is above the 'rangeHigh', take
              //   emergency action to begin cooling, and report a high temperature spike.
              "actions": [
                {
                  "iotTopicPublish": {
                    "mqttTopic": "temperatureSensor/spike"
                  }
                },
                {
                  "sns": {
                    "targetArn": "arn:aws:sns:us-west-2:123456789012:coolOn"
                  }
                },
                {
                  "iotTopicPublish": {
                    "mqttTopic": "hvac/Cooling/On"
                  }
                },
                {
                  "setVariable": {
                    // This is necessary because we want to set a timer to delay the shutoff
                    //   of a cooling/heating unit, but we only want to set the timer when we 
                    //   enter that new state initially.
                    "variableName": "enteringNewState",
                    "value": "true"
                  }
                }
              ],
              "nextState": "cooling"
            },

            {
              "eventName": "lowTemperatureSpike",
              "condition": "$input.temperatureInput.sensorData.temperature < $variable.rangeLow",
              // When even a single temperature reading arrives that is below the 'rangeLow', take
              //   emergency action to begin heating, and report a low-temperature spike.
              "actions": [
                {
                  "iotTopicPublish": {
                    "mqttTopic": "temperatureSensor/spike"
                  }
                },
                {
                  "sns": {
                    "targetArn": "arn:aws:sns:us-west-2:123456789012:heatOn"
                  }
                },
                {
                  "iotTopicPublish": {
                    "mqttTopic": "hvac/Heating/On"
                  }
                },
                {
                  "setVariable": {
                    "variableName": "enteringNewState",
                    "value": "true"
                  }
                }
              ],
              "nextState": "heating"
            },

            {
              "eventName": "highTemperatureThreshold",
              "condition": "(((($variable.averageTemperature * ($variable.sensorCount - 1)) + $input.temperatureInput.sensorData.temperature) / $variable.sensorCount) > ($variable.desiredTemperature + $variable.allowedError))",
              // When the average temperature is above the desired temperature plus the allowed error factor,
              //   it is time to start cooling. Note that we calculate the average temperature here again
              //   because the value stored in the 'averageTemperature' variable is not yet available for use
              //   in our condition.
              "actions": [
                {
                  "sns": {
                    "targetArn": "arn:aws:sns:us-west-2:123456789012:coolOn"
                  }
                },
                {
                  "iotTopicPublish": {
                    "mqttTopic": "hvac/Cooling/On"
                  }
                },
                {
                  "setVariable": {
                    "variableName": "enteringNewState",
                    "value": "true"
                  }
                }
              ],
              "nextState": "cooling"
            },

            {
              "eventName": "lowTemperatureThreshold",
              "condition": "(((($variable.averageTemperature * ($variable.sensorCount - 1)) + $input.temperatureInput.sensorData.temperature) / $variable.sensorCount) < ($variable.desiredTemperature - $variable.allowedError))",
              // When the average temperature is below the desired temperature minus the allowed error factor,
              //   it is time to start heating. Note that we calculate the average temperature here again
              //   because the value stored in the 'averageTemperature' variable is not yet available for use
              //   in our condition.
              "actions": [
                {
                  "sns": {
                    "targetArn": "arn:aws:sns:us-west-2:123456789012:heatOn"
                  }
                },
                {
                  "iotTopicPublish": {
                    "mqttTopic": "hvac/Heating/On"
                  }
                },
                {
                  "setVariable": {
                    "variableName": "enteringNewState",
                    "value": "true"
                  }
                }
              ],
              "nextState": "heating"
            }
          ]
        }
      },


      {
        "stateName": "cooling",
        "onEnter": {
          "events": [
            {
              "eventName": "delay",
              "condition": "!$variable.noDelay && $variable.enteringNewState",
              // If the operational parameters specify that there should be a minimum time that the 
              //   heating and cooling units should be run before being shut off again, we set
              //   a timer to ensure the proper operation here.
              "actions": [
                {
                  "setTimer": {
                    "timerName": "coolingTimer",
                    "seconds": 180
                  }
                },
                {
                  "setVariable": {
                    // We use this 'goodToGo' variable to store the status of the timer expiration 
                    //   for use in conditions that also use input variable values. If 
                    //   'timeout()' is used in such mixed conditionals, its value is lost.
                    "variableName": "goodToGo",
                    "value": "false"
                  }
                }
              ]
            },
            {
              "eventName": "dontDelay",
              "condition": "$variable.noDelay == true",
              // If the heating/cooling unit shutoff delay is not used, no need to wait.
              "actions": [
                {
                  "setVariable": {
                    "variableName": "goodToGo",
                    "value": "true"
                  }
                }
              ]
            },
            {
              "eventName": "beenHere",
              "condition": "true",
              "actions": [
                {
                  "setVariable": {
                    "variableName": "enteringNewState",
                    "value": "false"
                  }
                }
              ]
            }
          ]
        },

        "onInput": {
          "events": [
            // These are events that occur when an input is received (if the condition is
            //   satisfied), but don't cause a transition to another state.
            {
              "eventName": "whatWasInput",
              "condition": "true",
              "actions": [
                {
                  "setVariable": {
                    "variableName": "sensorId",
                    "value": "$input.temperatureInput.sensorId"
                  }
                },
                {
                  "setVariable": {
                    "variableName": "reportedTemperature",
                    "value": "$input.temperatureInput.sensorData.temperature"
                  }
                }
              ]
            },
            {
              "eventName": "changeDesired",
              "condition": "$input.seedTemperatureInput.desiredTemperature != $variable.desiredTemperature",
              "actions": [
                { 
                  "setVariable": {
                    "variableName": "desiredTemperature",
                    "value": "$input.seedTemperatureInput.desiredTemperature"
                  }
                }
              ]
            },
            {
              "eventName": "calculateAverage",
              "condition": "$input.temperatureInput.sensorData.temperature < $variable.anomalousHigh && $input.temperatureInput.sensorData.temperature > $variable.anomalousLow",
              "actions": [
                {
                  "setVariable": {
                    "variableName": "averageTemperature",
                    "value": "((($variable.averageTemperature * ($variable.sensorCount - 1)) + $input.temperatureInput.sensorData.temperature) / $variable.sensorCount)"
                  }
                }
              ]
            },
            {
              "eventName": "areWeThereYet",
              "condition": "(timeout(\"coolingTimer\"))",
              "actions": [
                {
                  "setVariable": {
                    "variableName": "goodToGo",
                    "value": "true"
                  }
                }
              ]
            }
          ],
          "transitionEvents": [
            // Note that some tests of temperature values (for example, the test for an anomalous value) 
            //   must be placed here in the 'transitionEvents' because they work together with the tests 
            //   in the other conditions to ensure that we implement the proper "if..elseif..else" logic. 
            //   But each transition event must have a destination state ('nextState'), and even if that 
            //   is actually the current state, the "onEnter" events for this state will be executed again.
            //   This is the reason for the 'enteringNewState' variable and related.
            {
              "eventName": "anomalousInputArrived",
              "condition": "$input.temperatureInput.sensorData.temperature >= $variable.anomalousHigh || $input.temperatureInput.sensorData.temperature <= $variable.anomalousLow",
              "actions": [
                { 
                  "iotTopicPublish": {
                    "mqttTopic": "temperatureSensor/anomaly"
                  }
                }
              ],
              "nextState": "cooling"
            },

            {
              "eventName": "highTemperatureSpike",
              "condition": "$input.temperatureInput.sensorData.temperature > $variable.rangeHigh",
              "actions": [
                {
                  "iotTopicPublish": {
                    "mqttTopic": "temperatureSensor/spike"
                  }
                }
              ],
              "nextState": "cooling"
            },

            {
              "eventName": "lowTemperatureSpike",
              "condition": "$input.temperatureInput.sensorData.temperature < $variable.rangeLow",
              "actions": [
                {
                  "iotTopicPublish": {
                    "mqttTopic": "temperatureSensor/spike"
                  }
                },
                {
                  "sns": {
                    "targetArn": "arn:aws:sns:us-west-2:123456789012:coolOff"
                  }
                },
                {
                  "sns": {
                    "targetArn": "arn:aws:sns:us-west-2:123456789012:heatOn"
                  }
                },
                {
                  "iotTopicPublish": {
                    "mqttTopic": "hvac/Cooling/Off"
                  }
                },
                {
                  "iotTopicPublish": {
                    "mqttTopic": "hvac/Heating/On"
                  }
                },
                {
                  "setVariable": {
                    "variableName": "enteringNewState",
                    "value": "true"
                  }
                }
              ],
              "nextState": "heating"
            },

            {
              "eventName": "desiredTemperature",
              "condition": "(((($variable.averageTemperature * ($variable.sensorCount - 1)) + $input.temperatureInput.sensorData.temperature) / $variable.sensorCount) <= ($variable.desiredTemperature - $variable.allowedError)) && $variable.goodToGo == true",
              "actions": [
                {
                  "sns": {
                    "targetArn": "arn:aws:sns:us-west-2:123456789012:coolOff"
                  }
                },
                {
                  "iotTopicPublish": {
                    "mqttTopic": "hvac/Cooling/Off"
                  }
                }
              ],
              "nextState": "idle"
            }
          ]
        }
      },


      {
        "stateName": "heating",
        "onEnter": {
          "events": [
            {
              "eventName": "delay",
              "condition": "!$variable.noDelay && $variable.enteringNewState",
              "actions": [
                {
                  "setTimer": {
                    "timerName": "heatingTimer",
                    "seconds": 120
                  }
                },
                {
                  "setVariable": {
                    "variableName": "goodToGo",
                    "value": "false"
                  }
                }
              ]
            },
            {
              "eventName": "dontDelay",
              "condition": "$variable.noDelay == true",
              "actions": [
                {
                  "setVariable": {
                    "variableName": "goodToGo",
                    "value": "true"
                  }
                }
              ]
            },
            {
              "eventName": "beenHere",
              "condition": "true",
              "actions": [
                {
                  "setVariable": {
                    "variableName": "enteringNewState",
                    "value": "false"
                  }
                }
              ]
            }
          ]
        },

        "onInput": {
          "events": [
            {
              "eventName": "whatWasInput",
              "condition": "true",
              "actions": [
                {
                  "setVariable": {
                    "variableName": "sensorId",
                    "value": "$input.temperatureInput.sensorId"
                  }
                },
                {
                  "setVariable": {
                    "variableName": "reportedTemperature",
                    "value": "$input.temperatureInput.sensorData.temperature"
                  }
                }
              ]
            },
            {
              "eventName": "changeDesired",
              "condition": "$input.seedTemperatureInput.desiredTemperature != $variable.desiredTemperature",
              "actions": [
                { 
                  "setVariable": {
                    "variableName": "desiredTemperature",
                    "value": "$input.seedTemperatureInput.desiredTemperature"
                  }
                }
              ]
            },
            {
              "eventName": "calculateAverage",
              "condition": "$input.temperatureInput.sensorData.temperature < $variable.anomalousHigh && $input.temperatureInput.sensorData.temperature > $variable.anomalousLow",
              "actions": [
                {
                  "setVariable": {
                    "variableName": "averageTemperature",
                    "value": "((($variable.averageTemperature * ($variable.sensorCount - 1)) + $input.temperatureInput.sensorData.temperature) / $variable.sensorCount)"
                  }
                }
              ]
            },
            {
              "eventName": "areWeThereYet",
              "condition": "(timeout(\"heatingTimer\"))",
              "actions": [
                {
                  "setVariable": {
                    "variableName": "goodToGo",
                    "value": "true"
                  }
                }
              ]
            }
          ],
          "transitionEvents": [
            {
              "eventName": "anomalousInputArrived",
              "condition": "$input.temperatureInput.sensorData.temperature >= $variable.anomalousHigh || $input.temperatureInput.sensorData.temperature <= $variable.anomalousLow",
              "actions": [
                { 
                  "iotTopicPublish": {
                    "mqttTopic": "temperatureSensor/anomaly"
                  }
                }
              ],
              "nextState": "heating"
            },

            {
              "eventName": "highTemperatureSpike",
              "condition": "$input.temperatureInput.sensorData.temperature > $variable.rangeHigh",
              "actions": [
                {
                  "iotTopicPublish": {
                    "mqttTopic": "temperatureSensor/spike"
                  }
                },
                {
                  "sns": {
                    "targetArn": "arn:aws:sns:us-west-2:123456789012:heatOff"
                  }
                },
                {
                  "sns": {
                    "targetArn": "arn:aws:sns:us-west-2:123456789012:coolOn"
                  }
                },
                {
                  "iotTopicPublish": {
                    "mqttTopic": "hvac/Heating/Off"
                  }
                },
                {
                  "iotTopicPublish": {
                    "mqttTopic": "hvac/Cooling/On"
                  }
                },
                {
                  "setVariable": {
                    "variableName": "enteringNewState",
                    "value": "true"
                  }
                }
              ],
              "nextState": "cooling"
            },

            {
              "eventName": "lowTemperatureSpike",
              "condition": "$input.temperatureInput.sensorData.temperature < $variable.rangeLow",
              "actions": [
                {
                  "iotTopicPublish": {
                    "mqttTopic": "temperatureSensor/spike"
                  }
                }
              ],
              "nextState": "heating"
            },

            {
              "eventName": "desiredTemperature",
              "condition": "(((($variable.averageTemperature * ($variable.sensorCount - 1)) + $input.temperatureInput.sensorData.temperature) / $variable.sensorCount) >= ($variable.desiredTemperature + $variable.allowedError)) && $variable.goodToGo == true",
              "actions": [
                {
                  "sns": {
                    "targetArn": "arn:aws:sns:us-west-2:123456789012:heatOff"
                  }
                },
                {
                  "iotTopicPublish": {
                    "mqttTopic": "hvac/Heating/Off"
                  }
                }
              ],
              "nextState": "idle"
            }
          ]
        }
      } 

    ],

    "initialStateName": "start"
  },
  "key": "areaId",
  "roleArn": "arn:aws:iam::123456789012:role/IoTEventsRole" 
}
```

レスポンス:

```
{
    "detectorModelConfiguration": {
        "status": "ACTIVATING", 
        "lastUpdateTime": 1557523491.168, 
        "roleArn": "arn:aws:iam::123456789012:role/IoTEventsRole", 
        "creationTime": 1557523491.168, 
        "detectorModelArn": "arn:aws:iotevents:us-west-2:123456789012:detectorModel/areaDetectorModel", 
        "key": "areaId", 
        "detectorModelName": "areaDetectorModel", 
        "detectorModelVersion": "1"
    }
}
```