/// <summary>
/// Decode tags and property into registration object
/// </summary>
/// <param name="twin"></param>
/// <param name="properties"></param>
/// <returns></returns>
public static GatewayRegistration ToGatewayRegistration(this DeviceTwinModel twin,
Dictionary <string, VariantValue> properties)
{
if (twin == null)
{
return(null);
}
var tags = twin.Tags ?? new Dictionary <string, VariantValue>();
var registration = new GatewayRegistration {
// Device
DeviceId = twin.Id,
Etag = twin.Etag,
// Connected
Connected = twin.IsConnected() ?? false,
// Tags
IsDisabled =
tags.GetValueOrDefault <bool>(nameof(GatewayRegistration.IsDisabled), null),
NotSeenSince =
tags.GetValueOrDefault <DateTime>(nameof(GatewayRegistration.NotSeenSince), null),
Type =
tags.GetValueOrDefault <string>(TwinProperty.Type, null),
SiteId =
tags.GetValueOrDefault <string>(TwinProperty.SiteId, null),
// Properties
};
return(registration);
}
/// <summary>
/// Create patch twin model to upload
/// </summary>
/// <param name="existing"></param>
/// <param name="update"></param>
public static DeviceTwinModel Patch(this GatewayRegistration existing,
GatewayRegistration update)
{
var twin = new DeviceTwinModel {
Etag = existing?.Etag,
Tags = new Dictionary <string, VariantValue>(),
Properties = new TwinPropertiesModel {
Desired = new Dictionary <string, VariantValue>()
}
};
// Tags
if (update?.IsDisabled != null && update.IsDisabled != existing?.IsDisabled)
{
twin.Tags.Add(nameof(GatewayRegistration.IsDisabled), (update?.IsDisabled ?? false) ?
true : (bool?)null);
twin.Tags.Add(nameof(GatewayRegistration.NotSeenSince), (update?.IsDisabled ?? false) ?
DateTime.UtcNow : (DateTime?)null);
}
if (update?.SiteId != existing?.SiteId)
{
twin.Tags.Add(TwinProperty.SiteId, update?.SiteId);
}
twin.Tags.Add(nameof(GatewayRegistration.DeviceType), update?.DeviceType);
twin.Id = update?.DeviceId ?? existing?.DeviceId;
return(twin);
}
/// <summary>
/// Convert to service model
/// </summary>
/// <param name="registration"></param>
/// <returns></returns>
public static GatewayModel ToServiceModel(this GatewayRegistration registration)
{
return(new GatewayModel {
Id = registration.DeviceId,
SiteId = registration.SiteId,
Connected = registration.IsConnected() ? true : (bool?)null
});
}
/// <summary>
/// Create device twin
/// </summary>
/// <param name="registration"></param>
/// <returns></returns>
public static DeviceTwinModel ToDeviceTwin(this GatewayRegistration registration)
{
return(Patch(null, registration));
}