private void GetRequest(string requestUri, AsyncPostCallback callback)
{
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(requestUri);
request.ContentType = "application/x-www-form-urlencoded";
request.BeginGetResponse(new AsyncCallback((callbackResult) =>
{
try
{
HttpWebRequest request2 = (HttpWebRequest)callbackResult.AsyncState;
HttpWebResponse response = (HttpWebResponse)request2.EndGetResponse(callbackResult);
string responseString = "";
Stream streamResponse = response.GetResponseStream();
StreamReader reader = new StreamReader(streamResponse);
responseString = reader.ReadToEnd();
streamResponse.Close();
reader.Close();
response.Close();
callback(responseString);
}
catch (Exception e)
{
callback(null);
}
}), request);
}
public static void PostRequest(string requestUri, string parameters, AsyncPostCallback callback)
{
HttpWebRequest spAuthReq = HttpWebRequest.Create(requestUri) as HttpWebRequest;
spAuthReq.ContentType = "application/x-www-form-urlencoded";
spAuthReq.Method = "POST";
spAuthReq.BeginGetRequestStream(new AsyncCallback((callbackResult) =>
{
HttpWebRequest myRequest = (HttpWebRequest)callbackResult.AsyncState;
Stream postStream = myRequest.EndGetRequestStream(callbackResult);
byte[] byteArray = Encoding.UTF8.GetBytes(parameters);
postStream.Write(byteArray, 0, byteArray.Length);
postStream.Close();
myRequest.BeginGetResponse(new AsyncCallback((callbackResult2) =>
{
try
{
HttpWebRequest request = (HttpWebRequest)callbackResult2.AsyncState;
HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(callbackResult2);
string responseString = "";
Stream streamResponse = response.GetResponseStream();
StreamReader reader = new StreamReader(streamResponse);
responseString = reader.ReadToEnd();
streamResponse.Close();
reader.Close();
response.Close();
callback(responseString);
}
catch (Exception e)
{
callback(null);
}
}), myRequest);
}), spAuthReq);
}
/// <summary>
/// Construct a TCAPI object with asynchronous support.
/// </summary>
/// <param name="endpoint">The LRS endpoint</param>
/// <param name="authentification">Authentification object</param>
/// <param name="tcapiCallback">Asynchornous callback object</param>
/// <param name="offlineStorage">Offline Storage object</param>
/// <param name="statementPostInterval">Interval for asynchronous operations to take place, in milliseconds</param>
public TCAPI(Uri endpoint, IAuthenticationConfiguration authentification, ITCAPICallback tcapiCallback, IOfflineStorage offlineStorage, int statementPostInterval, int maxBatchSize)
{
this.endpoint = endpoint;
this.authentification = authentification;
this.tcapiCallback = tcapiCallback;
this.offlineStorage = offlineStorage;
this.statementPostInterval = statementPostInterval;
this.maxBatchSize = maxBatchSize;
this.asyncPostCallback = new AsyncPostCallback(this.PostSuccess, this.PostFailed, this.PostConnectionFailed);
this.isAsyncFlushing = false;
asyncPostTimer = new Timer();
asyncPostTimer.Elapsed += new ElapsedEventHandler(AsyncPostTimerElapsed);
asyncPostTimer.Interval = this.statementPostInterval;
asyncPostTimer.Enabled = this.statementPostInterval > 0;
asyncPostTimer.AutoReset = true;
this.version = DetermineVersioning();
}
/// <summary>
/// Stores statements synchronously, must be called from a separate thread
/// </summary>
/// <param name="statements">Statements to store</param>
/// <param name="callback">Callback to signal upon completion</param>
private void StoreStatements(Statement[] statements, AsyncPostCallback callback)
{
// Break the statement into a 2D array. First index is the number of batches, second is the number of
// statements in that batch, which is either maxBatchSize or statements.Length % maxBatchSize
Statement[][] batches = new Statement[(statements.Length - 1) / maxBatchSize + 1][];
for (int i = 0; i < batches.Length; i++)
{
batches[i] = new Statement[statements.Length - (maxBatchSize * (i + 1)) >= 0 ? maxBatchSize : statements.Length % maxBatchSize];
Array.Copy(statements, i * maxBatchSize, batches[i], 0, batches[i].Length);
}
for (int round = 0; round < batches.Length; round++)
{
foreach (Statement s in batches[round])
{
var failures = new List<ValidationFailure>(s.Validate(earlyReturnOnFailure: true));
if (failures.Count > 0)
{
throw new ArgumentException(failures[0].Error, "statements");
}
}
TinCanJsonConverter converter = new TinCanJsonConverter();
string postData;
switch (version)
{
case TCAPIVersion.TinCan090:
Model.TinCan090.Statement[] currentBatch = new RusticiSoftware.TinCanAPILibrary.Model.TinCan090.Statement[batches[round].Length];
for (int i = 0; i < currentBatch.Length; i++)
currentBatch[i] = (Model.TinCan090.Statement)batches[round][i];
postData = converter.SerializeToJSON(currentBatch);
break;
default:
postData = converter.SerializeToJSON(batches[round]);
break;
}
HttpMethods.PostRequest(postData, endpoint + STATEMENTS, authentification, callback, versionString);
}
}
