Device Management

IoT device lifecycle management: register, provision, configure, monitor health, push updates

Input: deviceId, deviceType, fleetId, firmwareVersion | Timeout: 1800s

Pipeline

dev_register_device
    │
dev_provision
    │
dev_configure
    │
dev_monitor_health
    │
dev_push_update

Workers

ConfigureWorker (dev_configure): Configures device settings. Real configuration based on device type.

switch (deviceType.toLowerCase()) {

Reads deviceType. Outputs configured, reportingInterval, telemetryTopics, shadowCreated.

MonitorHealthWorker (dev_monitor_health): Monitors device health. Real metric evaluation with threshold checks.

int batteryLevel = 50 + RNG.nextInt(51);

Reads deviceId. Outputs healthStatus, batteryLevel, signalStrength, lastSeen, uptime.

ProvisionWorker (dev_provision): Provisions credentials for a device. Real certificate ID generation.

String certificateId = "CERT-" + HexFormat.of().formatHex(certBytes).substring(0, 12).toUpperCase();

Reads deviceId. Outputs certificateId, mqttEndpoint, thingName, provisionedAt.

PushUpdateWorker (dev_push_update): Checks and pushes firmware updates. Real version comparison.

• comparison >= 0 → "up_to_date"

int len = Math.max(parts1.length, parts2.length);

Reads currentFirmware, deviceId. Outputs updateStatus, currentVersion, latestVersion, nextCheckAt.

RegisterDeviceWorker (dev_register_device): Registers an IoT device. Real validation of device type and fleet assignment.

boolean validType = VALID_TYPES.contains(deviceType.toLowerCase());

Reads deviceId, deviceType, fleetId. Outputs registrationId, registeredAt, fleetId, validType. Returns FAILED on validation errors.

Tests

10 tests cover valid inputs, boundary values, null handling, and error paths.

mvn test

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Run this example: see RUNNING.md for setup, build, and CLI instructions.