/// <summary>
/// PUT Verb
/// Initializes new session (request for new GUID create)
/// GestationalAge is required, in case GA is less/more than accepted minimum/maximum 406 is returned
/// </summary>
/// <returns></returns>
public Session InitSession(String GestationalAge)
{
int ga;
bool bSucc = Int32.TryParse(GestationalAge, out ga);
if (!bSucc || ga < 36 || ga > 42)
{
WebOperationContext.Current.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.NotAcceptable;
Logger.WriteLogEntry(TraceEventType.Error, "Patterns Add On Service, Patterns Service, Init Session", "Gestational age doesn't meet the requrements");
return(new Session());
}
var guidHndlr = GUIDHandler.Init();
var guidStr = guidHndlr.GenerateGUID(ga);
if (guidStr.Equals(String.Empty))
{
WebOperationContext.Current.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.NoContent;
Logger.WriteLogEntry(TraceEventType.Error, "Patterns Add On Service, Patterns Service, Init Session", "Failed to create Token");
return(null);
}
var curGuid = new Guid(guidStr);
var engineHandle = guidHndlr.GetEngineHandle(curGuid);
var session = new Session()
{
TokenId = guidStr, EngineHandle = engineHandle, GestationalAge = ga
};
Logger.WriteLogEntry(TraceEventType.Information, "Patterns Add On Service, Patterns Service, Init Session", "Token created successfully");
WebOperationContext.Current.OutgoingResponse.StatusCode = HttpStatusCode.Created;
return(session);
}
/// <summary>
/// GET Verb
/// Poll results
/// </summary>
/// <param name="Token"></param>
public ArtifactsList GetResults(String Token)
{
var guidHndlr = GUIDHandler.Init();
var curGuid = new Guid(Token);
bool bExist = guidHndlr.FindGuid(curGuid);
if (!bExist)
{
WebOperationContext.Current.OutgoingResponse.StatusCode = HttpStatusCode.NotFound;
Logger.WriteLogEntry(TraceEventType.Error, "Patterns Add On Service, Patterns Service, Get Results", "GUID not found");
return(ArtifactsList.GetEmptyList());
}
var session = guidHndlr.GetSession(curGuid);
if (session == null)
{
WebOperationContext.Current.OutgoingResponse.StatusCode = HttpStatusCode.NoContent;
Logger.WriteLogEntry(TraceEventType.Error, "Patterns Add On Service, Patterns Service, Get Results", "Couldn't find session");
return(ArtifactsList.GetEmptyList());
}
session.LastResultRequest = DateTime.Now;
var listToRet = ArtifactsList.GetList(session);
Logger.WriteLogEntry(TraceEventType.Information, "Patterns Add On Service, Patterns Service, Get Results", "Results sent");
Logger.WriteLogEntry(TraceEventType.Verbose, "Patterns Add On Service, Patterns Service, Get Results", "Results sent for GUID: " + curGuid.ToString());
return(listToRet);
}
public void StopTask()
{
var guidHndlr = GUIDHandler.Init();
guidHndlr.PurgeAll();
Host.Close();
Logger.WriteLogEntry(System.Diagnostics.TraceEventType.Information, "Patterns Add On Service, Add On Task, Service stop", "Service stopped");
}
/// <summary>
/// DELETE Verb
/// Closes specific session
/// </summary>
/// <param name="Token"></param>
public void PurgeToken(String Token)
{
var guidHndlr = GUIDHandler.Init();
var curGuid = new Guid(Token);
guidHndlr.DeleteGuid(curGuid);
Logger.WriteLogEntry(TraceEventType.Information, "Patterns Add On Service, Patterns Service, Delete Token", "Token deleted");
WebOperationContext.Current.OutgoingResponse.StatusCode = HttpStatusCode.OK;
}
/// <summary>
/// DELETE Verb
/// Remove all sessions
/// </summary>
public void PurgeAll()
{
var guidHndlr = GUIDHandler.Init();
bool bSucc = guidHndlr.PurgeAll();
Logger.WriteLogEntry(bSucc ? TraceEventType.Information : TraceEventType.Error,
"Patterns Add On Service, Patterns Service, Init Session",
bSucc ? "Tokens deleted successfully" : "Failed to delete all Tokens");
WebOperationContext.Current.OutgoingResponse.StatusCode = HttpStatusCode.OK;
}
/// <summary>
/// GET Verb
/// Get status of session, if GUID exists - returns the Token ID with status 200,
/// otherwise empty Token ID with status 204
/// </summary>
/// <param name="guid"></param>
/// <returns></returns>
public Session GetStatus(String Token)
{
var guidHndlr = GUIDHandler.Init();
var curGuid = new Guid(Token);
bool bExist = guidHndlr.FindGuid(curGuid);
Logger.WriteLogEntry(TraceEventType.Information, "Patterns Add On Service, Patterns Service, Get Token Status",
bExist ? "Token " + curGuid.ToString() + " found" : "Token not found");
WebOperationContext.Current.OutgoingResponse.StatusCode = bExist ? HttpStatusCode.OK : HttpStatusCode.NoContent;
return(new Session()
{
TokenId = bExist ? curGuid.ToString() : String.Empty
});
}
/// <summary>
/// POST Verb
/// Request for Patterns calculation.
/// If Token found - returns Token ID with 202, otherwise no Toke with 204.
/// </summary>
/// <param name="Token">Token ID</param>
/// <param name="inData">Input tracing data</param>
/// <returns>TokenID</returns>
public Session CalculatePatterns(String Token, TracingData inData)
{
var guidHndlr = GUIDHandler.Init();
var curGuid = new Guid(Token);
bool bExist = guidHndlr.FindGuid(curGuid);
if (!bExist)
{
WebOperationContext.Current.OutgoingResponse.StatusCode = HttpStatusCode.NotFound;
Logger.WriteLogEntry(TraceEventType.Error, "Patterns Add On Service, Patterns Service, Calculate Patterns", "GUID not found");
return(new Session()
{
TokenId = String.Empty
});
}
var session = guidHndlr.GetSession(curGuid);
if (session == null)
{
WebOperationContext.Current.OutgoingResponse.StatusCode = HttpStatusCode.NoContent;
Logger.WriteLogEntry(TraceEventType.Error, "Patterns Add On Service, Patterns Service, Calculate Patterns", "Couldn't find session");
return(new Session()
{
TokenId = curGuid.ToString()
});
}
// Check that results aren't stored for more than half an hour after last results request.
var resultsLength = DateTime.Now - session.LastResultRequest;
//System.Diagnostics.Trace.WriteLine("Last result request: " + resultsLength.TotalMinutes.ToString() + " ago");
if (resultsLength.TotalMinutes > Settings_MaxAmountOfResults)
{
WebOperationContext.Current.OutgoingResponse.StatusCode = HttpStatusCode.NotAcceptable;
Logger.WriteLogEntry(TraceEventType.Critical, "Patterns Add On Service, Patterns Service, Calculate Patterns", "Maximum size of results exceeded");
return(new Session()
{
TokenId = curGuid.ToString()
});
}
Logger.WriteLogEntry(TraceEventType.Verbose, "Patterns Add On Service, Patterns Service, Calculate Patterns", "Session found for GUID: " + curGuid.ToString());
if (!session.AppendRequest(inData))
{
WebOperationContext.Current.OutgoingResponse.StatusCode = HttpStatusCode.NoContent;
Logger.WriteLogEntry(TraceEventType.Critical, "Patterns Add On Service, Patterns Service, Calculate Patterns", "Input slice length exceeded");
return(new Session()
{
TokenId = curGuid.ToString()
});
}
Logger.WriteLogEntry(TraceEventType.Information, "Patterns Add On Service, Patterns Service, Calculate Patterns", "Tracings accepted");
WebOperationContext.Current.OutgoingResponse.StatusCode = HttpStatusCode.Accepted;
return(new Session()
{
TokenId = curGuid.ToString()
});
}
