protected override Device CreateDeviceData()
{
Debug.Print("Initializing device data");
Device dd = new Device()
{
deviceClass = new DeviceClass()
{
name = Resources.GetString(Resources.StringResources.DeviceClass),
version = Resources.GetString(Resources.StringResources.Version)
},
id = new Guid(Resources.GetBytes(Resources.BinaryResources.guid)),
key = Resources.GetString(Resources.StringResources.Key),
name = Resources.GetString(Resources.StringResources.DeviceName),
network = new DeviceNetwork()
{
name = Resources.GetString(Resources.StringResources.Network),
description = Resources.GetString(Resources.StringResources.NetworkDesc)
},
status = DeviceStatus.OK,
};
Debug.Print("Done initializing device data.");
return dd;
}
/// <summary>
/// Gets a command
/// </summary>
/// <param name="device">Device data of the device that is getting a command</param>
/// <returns>Command data structure or null if there are no pending commands</returns>
/// <remarks>
/// This method returns all the commands that are waiting at the server since last GetCommand call. It returns immediately, regardless if there are commands to execute or not.
/// </remarks>
public DeviceCommand GetCommand(Device device)
{
if (CommandQueue.Count != 0)
{
return (DeviceCommand)CommandQueue.Dequeue();
}
string TimeString = LastTimeStamp.ToString("yyyy-MM-ddTHH\\%3Amm\\%3Ass.fff000");
string Url = CloudUrl + DeviceCommand + device.id.ToString() + GetCommandName + TimeString;
byte[] bts = null;
WebResponse resp = MakeRequest(Url, null, GetMethod, device.id.ToString(), device.key);
if (resp.ContentType.IndexOf(ContentType) >= 0)
{
if (resp.ContentLength > 0)
{
using (Stream rs = resp.GetResponseStream())
{
bts = new byte[(int)rs.Length];
rs.Read(bts, 0, bts.Length);
rs.Close();
}
}
}
resp.Close();
if (bts != null)
{
JsonFormatter js = new JsonFormatter();
object o = js.FromJson(bts, typeof(DeviceCommand));
DeviceCommand dc = o as DeviceCommand;
if (dc != null && dc.status.IsNullOrEmpty())
{
return dc;
}
ArrayList al = o as ArrayList;
if (al != null)
{
if (al.Count == 0) return null;
for (int x = 0; x < al.Count; ++x)
{
dc = (DeviceCommand)al[x];
if (dc.status.IsNullOrEmpty())
{
CommandQueue.Enqueue(dc);
}
}
DeviceCommand ldc = (DeviceCommand)al[al.Count - 1];
LastTimeStamp = ldc.timestamp;
//LastTimeStamp += new TimeSpan(0, 0, 0, 0, 1);
return CommandQueue.Count == 0 ? null : (DeviceCommand)CommandQueue.Dequeue();
}
}
return null;
}
/// <summary>
/// Initializes the device
/// </summary>
/// <returns>True if the initialization was successfull</returns>
/// <remarks>
/// This function should be called by implementers before any calls to other DeveiceEngine's functions.
/// </remarks>
virtual public bool Init()
{
IsConnected = false;
IsOnline = false;
ReconnectCount = DefaultReconnectCount;
//DcClient = client;
if (Initializing != null)
{
if (!Initializing(this, new EventArgs())) return false;
}
//PreInit();
DeviceData = CreateDeviceData();
CreateEquipment();
//PostInit();
if (Initialized != null)
{
if (!Initialized(this, new EventArgs())) return false;
}
return true;
}
/// <summary>
/// Updates command status
/// </summary>
/// <param name="device">Device data of the device that is updating a command status</param>
/// <param name="CommandId">ID of the command to be updated</param>
/// <param name="status">Status of the command</param>
/// <returns>True if the status update was successfull; false - otherwise</returns>
/// <remarks>
/// The devices are using this method to notify the server of command completion and its result.
/// </remarks>
public bool UpdateCommandStatus(Device device, string CommandId, CommandStatus status)
{
//bool rv = false;
HttpWebResponse resp = MakeRequest(
CloudUrl + DeviceCommand + device.id.ToString() + CommandStatus + CommandId,
status,
PutMethod,
device.id.ToString(),
device.key) as HttpWebResponse;
return resp.StatusCode == HttpStatusCode.OK || resp.StatusCode == HttpStatusCode.NoContent;
}
/// <summary>
/// Gets a command
/// </summary>
/// <param name="device">Device data of the device that is getting a command</param>
/// <param name="onlyUnprocessed">Get commands with empty status only</param>
/// <returns>Command data structure or null if there are no pending commands</returns>
/// <remarks>
/// This method returns all the commands that are waiting at the server since last GetCommand call. It returns immediately, regardless if there are commands to execute or not.
/// </remarks>
public DeviceCommand GetCommand(Device device, bool onlyUnprocessed = true)
{
if (CommandQueue.Count != 0)
{
return (DeviceCommand)CommandQueue.Dequeue();
}
string TimeString = UriExtensions.EscapeDataString(LastTimeStamp);
string Url = CloudUrl + DeviceCommand + device.id.ToString() + PollCommandName + TimeString + "&waitTimeout=0";
byte[] bts = null;
WebResponse resp = MakeRequest(Url, null, GetMethod, device.id.ToString(), device.key);
if (resp.ContentType.IndexOf(ContentType) >= 0)
{
if (resp.ContentLength > 0)
{
using (Stream rs = resp.GetResponseStream())
{
bts = new byte[(int)rs.Length];
rs.Read(bts, 0, bts.Length);
rs.Close();
}
}
}
resp.Close();
if (bts != null)
{
JsonFormatter js = new JsonFormatter();
object o = js.FromJson(bts, typeof(DeviceCommand));
DeviceCommand dc = o as DeviceCommand;
if (dc != null && (!onlyUnprocessed || StringExtensions.IsNullOrEmpty(dc.status)))
{
return dc;
}
ArrayList al = o as ArrayList;
if (al != null)
{
if (al.Count == 0) return null;
for (int x = 0; x < al.Count; ++x)
{
dc = (DeviceCommand)al[x];
if (!onlyUnprocessed || StringExtensions.IsNullOrEmpty(dc.status))
{
CommandQueue.Enqueue(dc);
}
}
DeviceCommand ldc = (DeviceCommand)al[al.Count - 1];
LastTimeStamp = ldc.timestamp;
return CommandQueue.Count == 0 ? null : (DeviceCommand)CommandQueue.Dequeue();
}
}
return null;
}
/// <summary>
/// Sends a notification
/// </summary>
/// <param name="device">Device data of the device that is sending the notification</param>
/// <param name="notification">Notification to be sent</param>
/// <returns>True if the notification succeeds; false - otherwise</returns>
/// <remarks>
/// This method can be used by devices to send notifications.
/// </remarks>
public bool PostNotification(Device device, INotification notification)
{
//bool rv = false;
HttpWebResponse resp = MakeRequest(
CloudUrl + DeviceCommand + device.id.ToString() + NotificationCommand,
notification.Data,
PostMethod,
device.id.ToString(),
device.key) as HttpWebResponse;
return resp.StatusCode == HttpStatusCode.OK || resp.StatusCode == HttpStatusCode.Created;
//resp.Close();
}
/// <summary>
/// Registers a device
/// </summary>
/// <param name="device">Device data structure</param>
/// <returns>True, if registration succeeds; false - otherwise</returns>
/// <remarks>
/// This method is called by device to register it at the server.
/// </remarks>
public bool SetDevice(Device device)
{
//bool rv = false;
HttpWebResponse resp = MakeRequest(CloudUrl + DeviceCommand + device.id.ToString(),
device,
PutMethod,
device.id.ToString(),
device.key) as HttpWebResponse;
return resp.StatusCode == HttpStatusCode.OK || resp.StatusCode == HttpStatusCode.NoContent;
}
// Obsolete!
/// <summary>
/// Polls command for execution
/// </summary>
/// <param name="device">Device data of the device that is polling a command</param>
/// <returns>Command data structure or null if there are no commands</returns>
/// <remarks>
/// This method returns the next command from the command queue. If there are no commands in the queue, it waits for ~30 seconds to receive a new command.
/// </remarks>
public DeviceCommand PollCommand(Device device)
{
if (CommandQueue.Count != 0)
{
return (DeviceCommand)CommandQueue.Dequeue();
}
//string TimeString = time.Year.ToString() + "-"
// + time.Month.ToString() + "-"
// + time.Day.ToString() + "T"
// + time.Hour.ToString() + ":"
// + time.Minute.ToString() + ":"
// + time.Second.ToString();
string Url = CloudUrl + DeviceCommand + device.id.ToString() + PollCommandName;// +TimeString;
byte[] bts = null;
WebResponse resp = MakeRequest(Url, null, GetMethod, device.id.ToString(), device.key);
if (resp.ContentType.IndexOf(ContentType) > 0)
{
if (resp.ContentLength > 0)
{
using (Stream rs = resp.GetResponseStream())
{
bts = new byte[(int)rs.Length];
rs.Read(bts, 0, bts.Length);
rs.Close();
}
}
}
resp.Close();
if (bts != null)
{
JsonFormatter js = new JsonFormatter();
object o = js.FromJson(bts, typeof(DeviceCommand));
DeviceCommand dc = o as DeviceCommand;
if (dc != null)
{
return dc;
}
ArrayList al = o as ArrayList;
if (al != null)
{
if (al.Count == 0) return null;
for (int x = 1; x < al.Count; ++x)
{
CommandQueue.Enqueue(al[x]);
}
return (DeviceCommand)al[0];
}
}
return null;
}
