public async Task <int> SaveChangesAsync()
{
int modified = 0;
string twinJson = "";
foreach (var modifiedDevice in modelDevices.modifiedDevices)
{
if (modifiedDevice.State == EntityState.Added || modifiedDevice.State == EntityState.Modified)
{
twinJson = "{\"properties\":{\"desired\":" + modifiedDevice.Device.DesiredPropertiesToJson() + "}}";
var test = Newtonsoft.Json.JsonConvert.DeserializeObject(twinJson);
}
switch (modifiedDevice.State)
{
case EntityState.Added:
var newDevice = new Microsoft.Azure.Devices.Device(modifiedDevice.Device.Id);
newDevice = await registryManager.AddDeviceAsync(newDevice);
var twin = await registryManager.GetTwinAsync(newDevice.Id);
await registryManager.UpdateTwinAsync(newDevice.Id, twinJson, twin.ETag);
modified++;
break;
case EntityState.Modified:
var managedDevice = await registryManager.GetDeviceAsync(modifiedDevice.Device.Id);
var manageDeviceTwin = await registryManager.GetTwinAsync(modifiedDevice.Device.Id);
string etag = manageDeviceTwin.ETag;
await registryManager.UpdateTwinAsync(modifiedDevice.Device.Id, twinJson, etag);
modified++;
break;
case EntityState.Deleted:
var registered = await registryManager.GetDeviceAsync(modifiedDevice.Device.Id);
await registryManager.RemoveDeviceAsync(registered);
modified++;
break;
}
}
modelDevices.modifiedDevices.Clear();
return(modified);
}
public async Task DeviceRegistryAsync()
{
registryManager = Microsoft.Azure.Devices.RegistryManager.CreateFromConnectionString(Store.Instance.IotHubRegistryConnectionString);
device = await registryManager.GetDeviceAsync(GetDeviceID());
if (device == null)
{
device = await registryManager.AddDeviceAsync(new Microsoft.Azure.Devices.Device(GetDeviceID()));
}
}
private async Task <DeviceClient> GetDeviceClient(string deviceId)
{
DeviceClient deviceClient;
if (!deviceClients.TryGetValue(deviceId, out deviceClient))
{
Microsoft.Azure.Devices.Device azureDevice = await registryManager.GetDeviceAsync(deviceId);
if (azureDevice != null)
{
deviceClient = DeviceClient.Create(
iotHubUri, AuthenticationMethodFactory.CreateAuthenticationWithRegistrySymmetricKey(
deviceId, azureDevice.Authentication.SymmetricKey.PrimaryKey), TransportType.Amqp);
deviceClients[deviceId] = deviceClient;
}
}
return(deviceClient);
}
private async Task <List <TDevice> > LoadIoTHubDevicesAsync()
{
List <TDevice> resultSet = new List <TDevice>();
devices.Clear();
string devIdQuery = "SELECT deviceId FROM devices";
var query = registryManager.CreateQuery(devIdQuery);
while (query.HasMoreResults)
{
var page = await query.GetNextAsJsonAsync();
foreach (var twin in page)
{
var jdevice = Newtonsoft.Json.JsonConvert.DeserializeObject(twin) as Newtonsoft.Json.Linq.JObject;
var deviceId = jdevice.Value <string>("DeviceId");
var registedDevice = await registryManager.GetDeviceAsync(deviceId);
var registedDeviceTwin = await registryManager.GetTwinAsync(deviceId);
var device = new TDevice()
{
Id = registedDevice.Id
};
device.SetDesiredProperties(registedDeviceTwin.Properties.Desired.ToJson());
// Set Reported Properties.
var rpJSON = (Newtonsoft.Json.Linq.JObject)Newtonsoft.Json.JsonConvert.DeserializeObject(registedDeviceTwin.Properties.Reported.ToJson(Newtonsoft.Json.Formatting.None));
rpJSON.Remove("$metadata");
rpJSON.Remove("$version");
device.Reported = Newtonsoft.Json.JsonConvert.SerializeObject(rpJSON);
devices.Add(new IoTDeviceEntry <TDevice>()
{
Device = device,
State = EntityState.Unchanged
});
resultSet.Add(device);
}
}
return(resultSet);
}
public async Task StartAsync(CancellationToken ct)
{
// TODO: You cannot install certificate on Windows by script - we need to implement certificate verification callback handler.
IEnumerable <X509Certificate2> certs = await CertificateHelper.GetTrustBundleFromEdgelet(new Uri(this.workloadUri), this.apiVersion, this.workloadClientApiVersion, this.moduleId, this.moduleGenerationId);
ITransportSettings transportSettings = ((Protocol)Enum.Parse(typeof(Protocol), this.transportType.ToString())).ToTransportSettings();
OsPlatform.Current.InstallCaCertificates(certs, transportSettings);
Microsoft.Azure.Devices.RegistryManager registryManager = null;
try
{
registryManager = Microsoft.Azure.Devices.RegistryManager.CreateFromConnectionString(this.iotHubConnectionString);
var edgeDevice = await registryManager.GetDeviceAsync(this.edgeDeviceId);
var leafDevice = new Microsoft.Azure.Devices.Device(this.deviceId);
leafDevice.Scope = edgeDevice.Scope;
Microsoft.Azure.Devices.Device device = await registryManager.AddDeviceAsync(leafDevice, ct);
string deviceConnectionString = $"HostName={this.iotHubHostName};DeviceId={this.deviceId};SharedAccessKey={device.Authentication.SymmetricKey.PrimaryKey};GatewayHostName={this.gatewayHostName}";
this.deviceClient = DeviceClient.CreateFromConnectionString(deviceConnectionString, new ITransportSettings[] { transportSettings });
var retryStrategy = new Incremental(15, RetryStrategy.DefaultRetryInterval, RetryStrategy.DefaultRetryIncrement);
var retryPolicy = new RetryPolicy(new FailingConnectionErrorDetectionStrategy(), retryStrategy);
await retryPolicy.ExecuteAsync(
async() =>
{
await this.deviceClient.OpenAsync(ct);
}, ct);
while (!ct.IsCancellationRequested)
{
this.logger.LogInformation("Ready to receive message");
try
{
Message message = await this.deviceClient.ReceiveAsync();
if (message == null)
{
this.logger.LogWarning("Received message is null");
continue;
}
if (!message.Properties.ContainsKey(TestConstants.Message.SequenceNumberPropertyName) ||
!message.Properties.ContainsKey(TestConstants.Message.BatchIdPropertyName) ||
!message.Properties.ContainsKey(TestConstants.Message.TrackingIdPropertyName))
{
string messageBody = new StreamReader(message.BodyStream).ReadToEnd();
string propertyKeys = string.Join(",", message.Properties.Keys);
this.logger.LogWarning($"Received message doesn't contain required key. property keys: {propertyKeys}, message body: {messageBody}, lock token: {message.LockToken}.");
continue;
}
this.logger.LogInformation($"Message received. " +
$"Sequence Number: {message.Properties[TestConstants.Message.SequenceNumberPropertyName]}, " +
$"batchId: {message.Properties[TestConstants.Message.BatchIdPropertyName]}, " +
$"trackingId: {message.Properties[TestConstants.Message.TrackingIdPropertyName]}, " +
$"LockToken: {message.LockToken}.");
await this.ReportTestResult(message);
await this.deviceClient.CompleteAsync(message);
}
catch (Exception ex)
{
this.logger.LogError(ex, "Error occurred while receiving message.");
}
}
}
finally
{
registryManager?.Dispose();
}
}
