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Crie uma definição AWS IoT Events de modelo de detector
O exemplo 'areaDetectorModel' tem comentários embutidos.
CLIcomando:
aws iotevents create-detector-model --cli-input-json file://areaDetectorModel.json
Arquivo: 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" }
Resposta:
{ "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" } }
