/// <summary>
/// Enqueues the specified item.
/// </summary>
/// <param name="item">The item.</param>
public new void Enqueue(RestfulObject <T> item)
{
lock (syncLock) // Enqueue is locked until current queue is empted by AttemptNextTransaction()
{
//Device.Log.Debug("Enqueue Item: item: " + item.Object.ToString() + " type: " + typeof(T).ToString() );
RestfulObject <T> queueitem = this.FirstOrDefault(exitem => exitem.UriEndpoint == item.UriEndpoint);
if (queueitem != null)
{
if (item.Verb == HttpVerb.Delete)
{
queueitem.Verb = HttpVerb.Delete;
//queueitem.Verb = HttpVerb.None;
//base.Enqueue(item);
}
else
{
queueitem.Object = item.Object;
}
}
else
{
base.Enqueue(item);
}
}
TriggerTimer();
}
/// <summary>
/// Creates a copy of a RESTful object for the item instance provided.
/// </summary>
/// <param name="domainObject">The item instance to clone to a new RESTful object.</param>
/// <returns></returns>
public RestfulObject <T> Clone(T domainObject)
{
RestfulObject <T> restObj = new RestfulObject <T>(domainObject, this.UriEndpoint)
{
ExpirationDate = this.ExpirationDate,
LazyLoaded = this.LazyLoaded,
Verb = this.Verb,
AttemptRefreshDate = this.AttemptRefreshDate
};
return(restObj);
}
private Dictionary <string, string> MergeHeaders(RestfulObject <T> restObject)
{
var mergedHeaders = new Dictionary <string, string>();
if (Device.RequestInjectionHeaders != null)
{
mergedHeaders.AddRange(Device.RequestInjectionHeaders);
}
if (restObject != null && restObject.PutPostDeleteHeaders != null)
{
mergedHeaders.AddRange(restObject.PutPostDeleteHeaders);
}
return(mergedHeaders);
}
private HttpStatusCode MakeRequest(RestfulObject <T> obj, out RestfulObject <T> responseObj)
{
//ISerializer<T> iSerializer = SerializerFactory.Create<T>( QueueSerializationFormat );
//Device.Log.Debug (string.QueueSerializationFormat ("Request Body: {0}", iSerializer.SerializeObject (obj.Object, MonoCross.Utilities.EncryptionMode.NoEncryption)));
byte[] postBytes = Serializer.SerializeObjectToBytes(obj.Object, EncryptionMode.NoEncryption);
var headers = MergeHeaders(obj);
var body = Serializer.SerializeObject(obj.Object);
// add OData Accept header
if (Format == SerializationFormat.ODATA && !obj.PutPostDeleteHeaders.Contains("Accept"))
{
obj.PutPostDeleteHeaders.Add("Accept", "application/json");
}
NetworkResponse retval = Device.Network.Poster.PostBytes(BaseUri.AppendPath(obj.TransactionEndpoint), postBytes, Serializer.ContentType, obj.Verb,
headers, obj.Object, _responseTimeout);
// if Rest returns type and verb Put/Post then convert response to type T
// and call event with object to pass to subscriber (e.g. a provider)
responseObj = default(RestfulObject <T>);
if (retval.StatusCode == HttpStatusCode.OK ||
retval.StatusCode == HttpStatusCode.Created ||
retval.StatusCode == HttpStatusCode.Accepted ||
retval.StatusCode == HttpStatusCode.NoContent)
{
if (RequestReturnsObject)
{
if (obj.Verb == HttpVerb.Post || (obj.Verb == HttpVerb.Put && Format != SerializationFormat.ODATA))
{
obj.ExpirationDate = retval.Expiration;
obj.AttemptRefreshDate = retval.AttemptToRefresh;
if (retval.ResponseBytes != null)
{
T returnObj = Serializer.DeserializeObject(retval.ResponseBytes, EncryptionMode.NoEncryption);
if (returnObj == null)
{
responseObj = obj.Clone(returnObj);
return(retval.StatusCode);
}
responseObj = obj.Clone(returnObj);
}
else
{
responseObj = obj.Clone(default(T));
}
}
else if (obj.Verb == HttpVerb.Delete || (obj.Verb == HttpVerb.Put && Format == SerializationFormat.ODATA))
{
responseObj = obj.Clone(obj.Object); // set response object to return if DELETE or OData PUT
}
}
else
{
responseObj = obj.Clone(obj.Object);
obj.ExpirationDate = retval.Expiration;
obj.AttemptRefreshDate = retval.AttemptToRefresh;
}
//if ( RequestReturnsObject && ( obj.Verb == HttpVerb.Post || obj.Verb == HttpVerb.Put ) )
//{
// T returnObj = iSerializer.DeserializeObject( retval.ResponseString, Core.Utilities.EncryptionMode.NoEncryption );
// if ( returnObj == null )
// return retval.StatusCode;
// obj.ExpirationDate = retval.Expiration;
// obj.AttemptRefreshDate = retval.AttemptToRefresh;
// responseObj = obj.Clone( returnObj );
//}
}
return(retval.StatusCode);
}
/// <summary>
/// Attempts the next transaction.
/// </summary>
public void AttemptNextTransaction()
{
HttpStatusCode statusCode;
bool exitLoop = false;
lock (syncLock)
{
Device.Log.Debug(string.Format("AttemptNextTransaction: count {0} exitloop: {1} ", this.Count, exitLoop));
int qCount = this.Count;
if (qCount <= 0)
{
return;
}
while (this.Count > 0 && !exitLoop)
{
RestfulObject <T> nextItem = Peek();
if (nextItem == null || nextItem.Verb == HttpVerb.None)
{
Device.Log.Debug(string.Format("AttemptNextTransaction: next item is null or Verb == None"));
Dequeue();
continue;
}
try
{
Device.Log.Debug("Make Post Request: item: " + nextItem.Object.ToString() + " type: " + typeof(T).ToString());
RestfulObject <T> responseItem;
statusCode = MakeRequest(nextItem, out responseItem);
switch (statusCode)
{
case HttpStatusCode.OK:
case HttpStatusCode.Created:
case HttpStatusCode.Accepted:
case HttpStatusCode.NoContent:
Device.Log.Debug("Queue Processing Success: result status " + statusCode.ToString() + " item: " + nextItem.ToString() + " type: " + typeof(T).ToString());
Dequeue();
SerializeQueue();
if (OnRequestComplete != null && responseItem != null)
{
OnRequestComplete(responseItem, responseItem.Verb);
}
break;
case HttpStatusCode.Unauthorized:
case HttpStatusCode.ServiceUnavailable:
case HttpStatusCode.RequestTimeout:
case HttpStatusCode.BadGateway:
case HttpStatusCode.GatewayTimeout:
case (HttpStatusCode)(-1): // application exception from post
case (HttpStatusCode)(-2): // no response object from post
Device.Log.Debug("Halt Queue Processing: item: " + nextItem.ToString() + " type: " + typeof(T).ToString());
// do not remove from queue but halt processing to prevent repeated calls to server until authorized
exitLoop = true;
if (OnRequestError != null)
{
OnRequestError(nextItem, nextItem.Verb, statusCode);
}
if (DequeueOnError)
{
Device.Log.Debug("Removing Object From Queue: item: " + nextItem.ToString() + " type: " + typeof(T).ToString());
Dequeue();
SerializeQueue();
}
continue;
//break;
default:
Device.Log.Debug(string.Format("Restful Queue<{0}>: Received Status {1} for {2} to {3}. Removing from Queue.", typeof(T).Name, statusCode, nextItem.Verb, nextItem.TransactionEndpoint));
if (OnRequestError != null)
{
OnRequestError(nextItem, nextItem.Verb, statusCode);
}
Dequeue();
SerializeQueue();
break;
}
}
catch (Exception exc)
{
if (OnRequestFailed != null)
{
OnRequestFailed(nextItem, nextItem.Verb, exc);
}
}
}
}
}
