/devices/{device-id}/config

// const deviceId = `myDevice`;
// const registryId = `myRegistry`;
// const region = `us-central1`;
// const algorithm = `RS256`;
// const privateKeyFile = `./rsa_private.pem`;
// const serverCertFile = `./roots.pem`;
/**
 * @see https://clearblade.atlassian.net/wiki/spaces/IC/pages/2210299905/Retargeting+Devices#Production-URL-%2F-URLs for a full URL list
 */
// const mqttBridgeHostname = `us-central1-mqtt.clearblade.com`;
// const mqttBridgePort = 8883;
// const messageType = `events`;
// const numMessages = 5;

// The mqttClientId is a unique string that identifies this device. For ClearBlade
// IoT Core, it must be in the format below.
const mqttClientId = `projects/${projectId}/locations/${region}/registries/${registryId}/devices/${deviceId}`;

// With ClearBlade IoT Core, the username field is ignored, however it must be
// non-empty. The password field is used to transmit a JWT to authorize the
// device. The "mqtts" protocol causes the library to connect using SSL, which
// is required for Cloud IoT Core.
const connectionArgs = {
  host: mqttBridgeHostname,
  port: mqttBridgePort,
  clientId: mqttClientId,
  username: "unused",
  password: createJwt(projectId, privateKeyFile, algorithm),
  protocol: "mqtts",
  secureProtocol: "TLSv1_2_method",
  ca: [readFileSync(serverCertFile)],
};

// Create a client, and connect to the ClearBlade MQTT bridge.
const iatTime = parseInt(Date.now() / 1000);
const client = mqtt.connect(connectionArgs);

// Subscribe to the /devices/{device-id}/config topic to receive config updates.
// Config updates are recommended to use QoS 1 (at least once delivery)
client.subscribe(`/devices/${deviceId}/config`, { qos: 1 });

// Subscribe to the /devices/{device-id}/commands/# topic to receive all
// commands or to the /devices/{device-id}/commands/<subfolder> to just receive
// messages published to a specific commands folder; we recommend you use
// QoS 0 (at most once delivery)
client.subscribe(`/devices/${deviceId}/commands/#`, { qos: 0 });

// The MQTT topic that this device will publish data to. The MQTT topic name is
// required to be in the format below. The topic name must end in 'state' to
// publish state and 'events' to publish telemetry. This differs from the
// device registry's Cloud Pub/Sub topic.
const mqttTopic = `/devices/${deviceId}/${messageType}`;

client.on("connect", (success) => {
  console.log("connect");
  if (!success) {
    console.log("Client not connected...");
  } else if (!publishChainInProgress) {
    publishAsync(mqttTopic, client, iatTime, 1, numMessages, connectionArgs);
  }
});

client.on("close", () => {
  console.log("close");
  shouldBackoff = true;
});

client.on("error", (err) => {
  console.log("error", err);
});

client.on("message", (topic, message) => {
  let messageStr = "Message received: ";
  if (topic === `/devices/${deviceId}/config`) {
    messageStr = "Config message received: ";
  } else if (topic.startsWith(`/devices/${deviceId}/commands`)) {
    messageStr = "Command message received: ";
  }

  messageStr += Buffer.from(message, "base64").toString("ascii");
  console.log(messageStr);
});

client.on("packetsend", () => {
  // Logging packet send is very verbose
});

// Once all the messages have been published, the connection to ClearBlade
// IoT Core will be closed, and the process will exit. See the publishAsync method.

import paho.mqtt.client as mqtt
import datetime
import ssl
import jwt

def create_jwt(project_id, private_key_file, algorithm):
    """Creates a JWT (https://jwt.io) to establish an MQTT connection.
    Args:
     project_id: The cloud project ID this device belongs to
     private_key_file: A path to a file containing an RSA256 or
             ES256 private key.
     algorithm: The encryption algorithm to use (RS256 or ES256)
    Returns:
        A JWT generated from the given project_id and private key, which
        expires in 20 minutes. After 20 minutes, your client will be
        disconnected, and a new JWT must be generated.
    Raises:
        ValueError: If the private_key_file does not contain a known key.
    """

    token = {
        # The time that the token was issued at
        "iat": datetime.datetime.now(tz=datetime.timezone.utc),
        # The time the token expires.
        "exp": datetime.datetime.now(tz=datetime.timezone.utc) + datetime.timedelta(minutes=20),
        # The audience field should always be set to the GCP project id.
        "aud": project_id,
    }

    # Read the private key file.
    with open(private_key_file, "r") as f:
        private_key = f.read()

    print(
        "Creating JWT using {} from private key file {}".format(
            algorithm, private_key_file
        )
    )

    return jwt.encode(token, private_key, algorithm=algorithm)

def error_str(rc):
    """Convert a Paho error to a human readable string."""
    return "{}: {}".format(rc, mqtt.error_string(rc))


def on_connect(unused_client, unused_userdata, unused_flags, rc):
    """Callback for when a device connects."""
    print("on_connect", mqtt.connack_string(rc))

    # After a successful connect, reset backoff time and stop backing off.
    global should_backoff
    global minimum_backoff_time
    should_backoff = False
    minimum_backoff_time = 1


def on_disconnect(unused_client, unused_userdata, rc):
    """Paho callback for when a device disconnects."""
    print("on_disconnect", error_str(rc))

    # Since a disconnect occurred, the next loop iteration will wait with
    # exponential backoff.
    global should_backoff
    should_backoff = True


def on_publish(unused_client, unused_userdata, unused_mid):
    """Paho callback when a message is sent to the broker."""
    print("on_publish")


def on_message(unused_client, unused_userdata, message):
    """Callback when the device receives a message on a subscription."""
    payload = str(message.payload.decode("utf-8"))
    print(
        "Received message '{}' on topic '{}' with Qos {}".format(
            payload, message.topic, str(message.qos)
        )
    )

def get_client(
    project_id,
    cloud_region,
    registry_id,
    device_id,
    private_key_file,
    algorithm,
    ca_certs,
    mqtt_bridge_hostname,
    mqtt_bridge_port,
):
    """Create our MQTT client.

    The client_id is a unique string that identifies this device.
    For ClearBlade IoT Core, it must be in the format below.
    """
    client_id = "projects/{}/locations/{}/registries/{}/devices/{}".format(
        project_id, cloud_region, registry_id, device_id
    )
    print("Device client_id is '{}'".format(client_id))

    client = mqtt.Client(client_id=client_id)

    # With ClearBlade IoT Core, the username field is ignored, and the
    # password field is used to transmit a JWT to authorize the device.
    client.username_pw_set(
        username="unused", password=create_jwt(project_id, private_key_file, algorithm)
    )

    # Enable SSL/TLS support.
    client.tls_set(ca_certs=ca_certs, tls_version=ssl.PROTOCOL_TLSv1_2)

    # Register message callbacks. https://eclipse.org/paho/clients/python/docs/
    # describes additional callbacks that Paho supports. In this example, the
    # callbacks just print to standard out.
    client.on_connect = on_connect
    client.on_publish = on_publish
    client.on_disconnect = on_disconnect
    client.on_message = on_message

    # Connect to the MQTT bridge.
    client.connect(mqtt_bridge_hostname, mqtt_bridge_port)

    # This is the topic on which the device will receive configuration updates.
    mqtt_config_topic = "/devices/{}/config".format(device_id)

    # Subscribe to the config topic.
    client.subscribe(mqtt_config_topic, qos=1)

    # The topic on which the device will receive commands.
    mqtt_command_topic = "/devices/{}/commands/#".format(device_id)

    # Subscribe to the commands topic, QoS 1 enables message acknowledgment.
    print("Subscribing to {}".format(mqtt_command_topic))
    client.subscribe(mqtt_command_topic, qos=0)

    return client

get_client(
    "YOUR_PROJECT_ID",
    "us-central1",
    "YOUR_REGISTRY_ID",
    "YOUR_DEVICE_ID",
    "YOUR_DEVICE_PRIVATE_KEY_FILE",
    "RS256",
    "DigiCertGlobalRootCA.crt.pem",
    "us-central1-mqtt.clearblade.com",
    8883
)

import fetch from 'node-fetch';

/**
 *
 * @see https://clearblade.atlassian.net/wiki/spaces/IC/pages/2202697766/Authenticating+applications for information on how to obtain your registry's urlBase, systemKey, and authToken
 *
 * @param {string} urlBase
 * @param {string} systemKey
 * @param {string} authToken
 * @param {string} deviceName
 * @param {number} version
 */
const getConfig = async (urlBase, systemKey, authToken, deviceName, version) => {
  const res = await fetch(
    `${urlBase}/api/v/4/webhook/execute/${systemKey}/cloudiotdevice_devices?name=${encodeURIComponent(
      deviceName
    )}&localVersion=${version}`,
    {
      method: 'GET',
      headers: {
        'ClearBlade-UserToken': authToken
      }
    }
  );
  const data = await res.json();
  console.log('Received config', data);
};

# see https://clearblade.atlassian.net/wiki/spaces/IC/pages/2202697766/Authenticating+applications

import requests
import urllib.parse

def get_config(urlBase, systemKey, authToken, deviceName, version):
  url = f"{urlBase}/api/v/4/webhook/execute/{systemKey}/cloudiotdevice_devices"
  headers = { "ClearBlade-UserToken": authToken }
  params = { "name": urllib.parse.quote(deviceName), "localVersion": version }
  response = requests.get(url=url, headers=headers, params=params)
  if response.status_code == 200:
    return response.json()
  else:
    return response.text

# To obtain the 3 params below see https://clearblade.atlassian.net/wiki/spaces/IC/pages/2202697766/Authenticating+applications
# urlBase named 'URL'
# systemKey named 'System Key'
# authToken named 'Token'
urlBase = "URL_FOR_YOUR_REGISTRY"
systemKey = "SYSTEM_KEY_FOR_YOUR_REGISTRY"
authToken = "TOKEN_FOR_YOUR_REGISTRY"
deviceName = "your-device-name"
version = "LOCAL_CONFIG_VERSION_OF_YOUR_DEVICE"
config_resp = get_config(urlBase, systemKey, authToken, deviceName, version)
print(config_resp)

// const cloudRegion = 'us-central1';
// const deviceId = 'my-device';
// const projectId = 'adjective-noun-123';
// const registryId = 'my-registry';
// const data = 'test-data';
// const version = 0;

import { DeviceManagerClient } from '@clearblade/iot';

const iotClient = new DeviceManagerClient({
  // optional auth parameters.
});

async function modifyCloudToDeviceConfig() {
  // Construct request
  const formattedName = iotClient.devicePath(projectId, cloudRegion, registryId, deviceId);

  const binaryData = Buffer.from(data).toString('base64');
  const request = {
    name: formattedName,
    versionToUpdate: version,
    binaryData: binaryData
  };

  const [response] = await iotClient.modifyCloudToDeviceConfig(request);
  console.log('Success:', response);
}

modifyCloudToDeviceConfig();

if (bPatchDeviceConfig)
{
    logger.LogInformation("Update configuration of a device");

    // While running this sample, it is assumed that device with name
    // "Sample-New-Device" exists

    string name = "projects/developmentenv/locations/us-central1/registries/Sample-New-Registry/devices/Sample-New-Device";

    var result = await mClient.GetDevice(4, name);
    if (!result.Item1 || (result.Item2 == null))
        logger.LogError("Failed to get a device configuration");
    else
    {
        logger.LogInformation("Successfully obtained the device configuration");

        // Use the obtained information
        string updateMask = "metadata";
        string pubKey = "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5P0Z4OUD5PSjri8xexGo\n6eQ39NGyQbXamIgWAwvnAs/oDRVqEejE2nwDhnpykaCGLkuDEN0LPd2wF+vC2Cq3\nY3YvkJh71IkjuAjMZQ+00CXdezfCjmTtEpMCNA3cV+G1g6uIcdEpHKs0YHfC9CFQ\nrjkc7tl3idmcQLngIov/gsFY7D1pbOgkCVVcZCRLgsdFfhCUYwYCvdEVJP3w+5mG\nybvmhNRbbFG7eG3+hmZoOg0h3f6r2fqgSx6l0+Z3D77SRT6lBEHvGDlxb08ASeuE\n0SJAc6PdAKd3FDqdZok4z1qJsgMqtU/ZGJJG54pNECWmhoOar+aQmmqnZ6kGQ5cn\nEwIDAQAB\n-----END PUBLIC KEY-----\n";
        result.Item2.credentials.Add(new core.Models.Credential
        {
            expirationTime = "",
            publicKey = new PublicKey
            {
                format = "RSA_PEM",
                key = pubKey
            }
        });

        result = await mClient.PatchDevice(4, name, updateMask, result.Item2);

        if (!result.Item1 || (result.Item2 == null))
            logger.LogError("Failed to update a device configuration");
    }
}

import os
import base64
from clearblade.cloud import iot_v1

def modify_cloud_to_device_config():
  project_id = 'YOUR_PROJECT_ID'
  cloud_region = 'us-central1'
  registry_id = 'your-registry-id'
  device_id = 'your-device-id'
  
  client = iot_v1.DeviceManagerClient()

  device_path = client.device_path(project_id, cloud_region, registry_id, device_id)

  # versionToUpdate MUST be the latest version. Setting this to 0 implies the latest version
  # since actual versions start with 1. If versionToUpdate is NOT 0 or the latest version, an
  # error is thrown.
  versionToUpdate = 0
  data = b"test-config-data"

  request = iot_v1.ModifyCloudToDeviceConfigRequest(
    name=device_path,
    version_to_update=versionToUpdate,
    binary_data=base64.b64encode(data)
  )

  client.modify_cloud_to_device_config(request=request)

os.environ["CLEARBLADE_CONFIGURATION"] = "/path/to/your-credentials.json"
modify_cloud_to_device_config()

// setConfig sends a configuration change to a device.
func setConfig(w io.Writer, projectID string, region string, registryID string, deviceID string, configData string) (*iot.DeviceConfig, error) {
    ctx := context.Background()
    service, err := iot.NewService(ctx)

    if err != nil {
        return nil, err
    }

    req := iot.ModifyCloudToDeviceConfigRequest{
        BinaryData: b64.StdEncoding.EncodeToString([]byte(configData)),
    }

    path := fmt.Sprintf("projects/%s/locations/%s/registries/%s/devices/%s", projectID, region, registryID, deviceID)
    response, err := service.Projects.Locations.Registries.Devices.ModifyCloudToDeviceConfig(path, &req).Do()
    if err != nil {
        return nil, err
    }

    fmt.Fprintf(w, "Config set!\nVersion now: %d\n", response.Version)

    return response, nil
}

// const cloudRegion = 'us-central1';
// const deviceId = 'my-device';
// const projectId = 'adjective-noun-123';
// const registryId = 'my-registry';
import { DeviceManagerClient } from '@clearblade/iot';

const iotClient = new DeviceManagerClient({
  // optional auth parameters.
});

async function listDeviceConfigVersions() {
  // Construct request
  const devicePath = iotClient.devicePath(projectId, cloudRegion, registryId, deviceId);

  const [response] = await iotClient.listDeviceConfigVersions({
    name: devicePath
  });
  const configs = response.deviceConfigs;

  if (configs.length === 0) {
    console.log(`No configs for device: ${deviceId}`);
  } else {
    console.log('Configs:');
  }

  for (let i = 0; i < configs.length; i++) {
    const config = configs[i];
    console.log('Config:', config, '\nData:\n', config.binaryData.toString('utf8'));
  }
}

listDeviceConfigVersions();

if (bGetDeviceConfig)
{
    logger.LogInformation("Get configuration of a device");

    // While running this sample, it is assumed that a device with name
    // "Sample-New-Device" exists and the version is updated to "2"

    string name = "projects/developmentenv/locations/us-central1/registries/Sample-New-Registry/Devices/Sample-New-Device";
    string localVersion = "2";

    var result = await mClient.GetDeviceConfig(4, name, localVersion);
    if (!result.Item1 || (result.Item2 == null))
        logger.LogError("Failed to get a device configuration");
    else
    {
        logger.LogInformation("Successfully obtained the device configuration");

        // Use the obtained information
    }
}

import os
from clearblade.cloud import iot_v1

def list_device_config_versions():
  project_id = 'YOUR_PROJECT_ID'
  cloud_region = 'us-central1'
  registry_id = 'your-registry-id'
  device_id = 'your-device-id'
  
  client = iot_v1.DeviceManagerClient()

  device_path = client.device_path(project_id, cloud_region, registry_id, device_id)

  request = iot_v1.ListDeviceConfigVersionsRequest(
    name=device_path,
    numVersions=0
  )

  response = client.list_device_config_versions(request=request)
  configs = response.device_configs

  if (len(configs) == 0):
    print(f"No configs for device: {device_id}")
  else:
    print("Configs:")
  
  for config in configs:
    if config.binary_data is None:
      print(f"version: {config.version}\n\tdata: {None}")
    else:  
      print(f"version: {config.version}\n\tcloudUpdateTime: {config.cloud_update_time}\n\tdata: {config.binary_data}")

os.environ["CLEARBLADE_CONFIGURATION"] = "/path/to/your-credentials.json"
list_device_config_versions()

// getDeviceConfigs retrieves and lists device configurations.
func getDeviceConfigs(w io.Writer, projectID string, region string, registryID string, device string) ([]*iot.DeviceConfig, error) {
    ctx := context.Background()
    service, err := iot.NewService(ctx)

    if err != nil {
        return nil, err
    }

    path := fmt.Sprintf("projects/%s/locations/%s/registries/%s/devices/%s", projectID, region, registryID, device)
    response, err := service.Projects.Locations.Registries.Devices.ConfigVersions.List(path).Do()
    if err != nil {
        return nil, err
    }

    for _, config := range response.DeviceConfigs {
        fmt.Fprintf(w, "%d : %s\n", config.Version, config.BinaryData)
    }

    return response.DeviceConfigs, nil
}