iot-config-update.html

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<script type="text/html" data-template-name="google-cloud-iot config-update">
    <!--Name-->
    <div class="form-row">
        <label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
        <input type="text" id="node-input-name">
    </div>

    <!--Credentials-->
    <div class="form-row">
        <label for="node-input-account"><i class="fa fa-user"></i> Credentials</label>
        <input type="text" id="node-input-account">
    </div>

    <!--Key File-->
    <div class="form-row">
        <label for="node-input-keyFilename"><i class="fa fa-user"></i> Key File</label>
        <input type="text" id="node-input-keyFilename">
    </div>

    <!--Project ID-->
    <div class="form-row">
        <label for="node-input-projectId"><i class="fa fa-cloud"></i> Project ID</label>
        <input type="text" id="node-input-projectId">
    </div>

    <!--Region-->
    <div class="form-row">
        <label for="node-input-region"><i class="fa fa-globe"></i> Region</label>
        <input type="text" id="node-input-region">
    </div>

    <!--Registry ID-->
    <div class="form-row">
        <label for="node-input-registryId"><i class="fa fa-book"></i> Registry ID</label>
        <input type="text" id="node-input-registryId">
    </div>

    <!--Device ID-->
    <div class="form-row">
        <label for="node-input-deviceId"><i class="fa fa-microchip"></i> Device ID</label>
        <input type="text" id="node-input-deviceId">
    </div> 
</script>

<script type="text/html" data-help-name="google-cloud-iot config-update">
    <p>Update the config of an IoT device.</p>
    <h3>Inputs</h3>
    <dl class="message-properties">
        <dt>msg.gcp.projectId
            <span class="property-type">string</span>
        </dt>
        <dd>The project id hosting the registry of devices.</dd>

        <dt>msg.gcp.region
            <span class="property-type">string</span>
        </dt>
        <dd>The region in which the registry is defined..</dd>
        
        <dt>msg.gcp.registryId
            <span class="property-type">string</span>
        </dt>
        <dd>The identity of the registry.</dd>

        <dt>msg.gcp.deviceId
            <span class="property-type">string</span>
        </dt>
        <dd>The identity of the device.</dd>
    </dl>

    <h3>Details</h3>
    
    <p>
        The GCP IoT Core allows one to update the configuration of an IoT device  The IoT - Config Update node encapsulates this function.
        In order to update the config of an IoT device, we need to identify that device.  The properties to identify it are the combination of:
        <ul>
            <li>project id - The project hosting the registry.</li>
            <li>region - The region in which the registry is defined.</li>
            <li>registry id - The identity of the registry.</li>
            <li>device id - The identity of the device.</li>
        </ul>
    </p>
    <p>
        With those defined, we can then send a payload.  To use this node, each of these must be supplied.
        We can supply values statically through the node's specific configuration or dynamically in the incoming message.
        For a dynamic invocation, we supply:
        <ul>
            <li>msg.gcp.projectId</li>
            <li>msg.gcp.region</li>
            <li>msg.gcp.registryId</li>
            <li>msg.gcp.deviceId</li>
        </ul>
    </p>
    <p>
        For the projectId and region, if one or both of those are not found, then we test to see if Node-RED is itself running on GCP and use
        the values retrieved from the compute engine metadata.
        The content of the config update that is sent to the device will be retrieved from msg.payload.
    </p>
</script>

<script type="text/javascript">
RED.nodes.registerType("google-cloud-iot config-update", {
    category: "GCP",
    defaults: {
        account: { type: "google-cloud-credentials", required: false },
        keyFilename: {value: "", required: false },
        projectId: { required: false },
        region: { required: false },
        registryId: { required: false },
        deviceId: { required: false },
        name: { value: "", required: false }
    },
    inputs: 1,
    outputs: 1,
    icon: "iot.png",
    align: "left",
    color: "#3FADB5",
    label: function () {
        return this.name || this.topic || "iot config update";
    },
    paletteLabel: "iot config update"
});
</script>