ExtractedTimFrame BuildAlertFrame(string roadwayid, string text, DateTime startTime, int duration, double startMM, double endMM)
{
bool reversed = startMM > endMM;
if (reversed)
{
double swap = startMM;
startMM = endMM;
endMM = swap;
}
ExtractedTimFrame results = new ExtractedTimFrame(text, startTime, duration);
var dbAlertMileMarkers = srInfloDbContext.Configuration_RoadwayMileMarkers
.Where(r => r.RoadwayId.Equals(roadwayid));
//Snap to closest milemarkers by widening the alert.
try
{
startMM = dbAlertMileMarkers.Where(m => m.MMNumber <= startMM).OrderByDescending(m => m.MMNumber).First().MMNumber;
}
catch { }
try
{
endMM = dbAlertMileMarkers.Where(m => m.MMNumber >= endMM).OrderBy(m => m.MMNumber).First().MMNumber;
}
catch { }
dbAlertMileMarkers = dbAlertMileMarkers.Where(m => startMM <= m.MMNumber && m.MMNumber <= endMM);
if (reversed)
{
dbAlertMileMarkers = dbAlertMileMarkers.OrderByDescending(m => m.MMNumber);
}
else
{
dbAlertMileMarkers = dbAlertMileMarkers.OrderBy(m => m.MMNumber);
}
var dbAlertMileMarkersList = dbAlertMileMarkers.ToList();
List <ExtractedNodeList> alertPaths = new List <ExtractedNodeList>();
while (dbAlertMileMarkersList.Count() > 1)
{
var mmarkers = dbAlertMileMarkersList.GetRange(0, Math.Min(MileMarkersPerValidRegion, dbAlertMileMarkersList.Count()));
List <Extracted3DOffset> nodes = new List <Extracted3DOffset>();
if (reversed)
{
mmarkers.OrderByDescending(m => m.MMNumber).ToList().ForEach(m => nodes.Add(new Extracted3DOffset(m.Latitude2, m.Longitude2, m.MMNumber)));
}
else
{
mmarkers.OrderBy(m => m.MMNumber).ToList().ForEach(m => nodes.Add(new Extracted3DOffset(m.Latitude1, m.Longitude1, m.MMNumber)));
}
if (nodes.Count > 1)
{
ExtractedNodeList alertPath = new ExtractedNodeList(nodes.ToArray());
alertPaths.Add(alertPath);
}
dbAlertMileMarkersList.RemoveRange(0, mmarkers.Count() - 1);
}
results.setAlertPaths(alertPaths.ToArray());
return(results);
}
// GET api/tim
public HttpResponseMessage Get(string roadwayid, double mm)
{
Trace.TraceInformation("[TRACE] Entering TimController::Get(string roadwayid, double mm)...");
if (srInfloDbContext == null)
{
return(this.Request.CreateErrorResponse(HttpStatusCode.InternalServerError, "Error connecting to Inflo DB"));
}
else
{
srInfloDbContext.ChangeTracker.DetectChanges();
//TODO reduce alerts we care about.
var qWarnRoadwayAlerts = srInfloDbContext.TMEOutput_QWARNMessage_CV.Where(a => a.RoadwayID.Equals(roadwayid)) /*.Where(a => System.Data.Entity.DbFunctions.AddSeconds(a.DateGenerated, a.ValidityDuration ?? 20) >= DateTime.UtcNow)*/;
var qWarnIncrAlerts = qWarnRoadwayAlerts.Where(a => a.BOQMMLocation <= a.FOQMMLocation).Where(a => (mm + AlertSearchRadius) >= a.BOQMMLocation && (mm - AlertSearchRadius) <= a.FOQMMLocation).OrderByDescending(a => a.DateGenerated).Take(1);
var qWarnDecrAlerts = qWarnRoadwayAlerts.Where(a => a.BOQMMLocation > a.FOQMMLocation).Where(a => (mm - AlertSearchRadius) <= a.BOQMMLocation && (mm + AlertSearchRadius) >= a.FOQMMLocation).OrderByDescending(a => a.DateGenerated).Take(1);
var qWarnApplicableAlerts = qWarnIncrAlerts.Union(qWarnDecrAlerts).ToList();
var qWarnAheadIncrAlerts = qWarnRoadwayAlerts.Where(a => a.BOQMMLocation <= a.FOQMMLocation).Where(a => (mm + QWarnAheadDistance + AlertSearchRadius) >= a.BOQMMLocation && (mm - AlertSearchRadius) <= a.BOQMMLocation).OrderByDescending(a => a.DateGenerated).Take(1);
var qWarnAheadDecrAlerts = qWarnRoadwayAlerts.Where(a => a.BOQMMLocation > a.FOQMMLocation).Where(a => (mm - QWarnAheadDistance - AlertSearchRadius) <= a.BOQMMLocation && (mm + AlertSearchRadius) >= a.BOQMMLocation).OrderByDescending(a => a.DateGenerated).Take(1);
var qWarnAheadApplicableAlerts = qWarnAheadIncrAlerts.Union(qWarnAheadDecrAlerts).ToList();
var spdHarmRoadwayAlerts = srInfloDbContext.TMEOutput_SPDHARMMessage_CV.Where(a => a.RoadwayId.Equals(roadwayid)).Where(a => System.Data.Entity.DbFunctions.AddSeconds(a.DateGenerated, a.ValidityDuration ?? 20) >= DateTime.UtcNow);
var spdHarmIncrAlerts = spdHarmRoadwayAlerts.Where(a => a.BeginMM <= a.EndMM).Where(a => (mm + AlertSearchRadius) >= a.BeginMM && (mm - AlertSearchRadius) <= a.EndMM).OrderByDescending(a => a.DateGenerated).Take(1);
var spdHarmDecrAlerts = spdHarmRoadwayAlerts.Where(a => a.BeginMM > a.EndMM).Where(a => (mm - AlertSearchRadius) <= a.BeginMM && (mm + AlertSearchRadius) >= a.EndMM).OrderByDescending(a => a.DateGenerated).Take(1);
var spdHarmApplicableAlerts = spdHarmIncrAlerts.Union(spdHarmDecrAlerts).ToList();
try
{
ExtractedTIM timMessage = new ExtractedTIM();
timMessage.setPacketId(TimAgencyId, DateTime.Now);
List <ExtractedTimFrame> frames = new List <ExtractedTimFrame>();
foreach (var alert in qWarnApplicableAlerts)
{
double startMM = alert.BOQMMLocation;
double endMM = (double)alert.FOQMMLocation;
double length = Math.Abs(endMM - startMM);
int time = -1;
if (alert.SpeedInQueue != null && alert.SpeedInQueue != 0)
{
time = (int)(length * 60 / (short)alert.SpeedInQueue);
}
int duration = alert.ValidityDuration == null ? AlertDefaultDuration : (int)alert.ValidityDuration;
ExtractedTimFrame frame = BuildAlertFrame(roadwayid, String.Format("q,{0:F1},{1},{2}", length, time, "Q-WARN: In Queue"), alert.DateGenerated, duration, startMM, endMM);
if (frame.getAlertPathCount() > 0)
{
frames.Add(frame);
}
}
foreach (var alert in qWarnAheadApplicableAlerts)
{
double endMM = alert.BOQMMLocation;
double startMM;
if (alert.BOQMMLocation > alert.FOQMMLocation)
{
startMM = endMM + QWarnAheadDistance;
}
else
{
startMM = endMM - QWarnAheadDistance;
}
double length = Math.Abs(endMM - startMM);
int time = -1;
if (alert.SpeedInQueue != null && alert.SpeedInQueue != 0)
{
time = (int)(length * 60 / (short)alert.SpeedInQueue);
}
int duration = alert.ValidityDuration == null ? AlertDefaultDuration : (int)alert.ValidityDuration;
ExtractedTimFrame frame = BuildAlertFrame(roadwayid, String.Format("a,{0:F1},{1},{2}", length, time, "Q-WARN: Queue Ahead"), alert.DateGenerated, duration, startMM, endMM);
if (frame.getAlertPathCount() > 0)
{
frames.Add(frame);
}
}
foreach (var alert in spdHarmApplicableAlerts)
{
double startMM = alert.BeginMM;
double endMM = (double)alert.EndMM;
int duration = alert.ValidityDuration == null ? AlertDefaultDuration : (int)alert.ValidityDuration;
ExtractedTimFrame frame = BuildAlertFrame(roadwayid, String.Format("s,{0},{1}", alert.RecommendedSpeed, alert.Justification), alert.DateGenerated, duration, startMM, endMM);
if (frame.getAlertPathCount() > 0)
{
frames.Add(frame);
}
}
timMessage.setFrames(frames.ToArray());
var rawTimMessageContent = timMessage.generateASN();
TimMessage rTimMessage = new TimMessage();
rTimMessage.payload = string.Concat(Array.ConvertAll(rawTimMessageContent, b => b.ToString("X2")));
return(this.Request.CreateResponse <TimMessage>(HttpStatusCode.OK, rTimMessage));
}
catch (Exception e)
{
return(this.Request.CreateErrorResponse(HttpStatusCode.InternalServerError, "Error generating TIM Message", e));
}
}
}