public void ProcessRequest(HttpContext context)
{
if (dataSummaryManager == null) dataSummaryManager = new DataSummaryManager();
APIRequestParams filterSettings = new APIRequestParams();
filterSettings.ParseParameters(filterSettings,context);
string action = "totals_per_country";
if (!String.IsNullOrEmpty(context.Request["action"]))
{
action = context.Request["action"].ToString();
}
if (action == "totals_per_country")
{
context.Response.ContentType = "application/javascript";
context.Response.Write(dataSummaryManager.GetTotalsPerCountrySummary(true,"ocm_getdatasummary", filterSettings ));
context.Response.Flush();
}
if (action == "full_summary")
{
// Output JSON summary of:
// - Current totals per country
// - Total added (per country? based on date range, location/distance filter?)
// - Total modified
// - User Comments Count
// - per month values, current month first? default last 12 months
}
if (action == "activity_summary")
{
// Based on date range, location and distance:
// - list of recent comments, checkins, id & title etc of items added & modified
var o = new JSONOutputProvider();
context.Response.ContentType = o.ContentType;
var summary = dataSummaryManager.GetActivitySummary(filterSettings);
o.PerformSerialisationV2(context.Response.OutputStream, summary, filterSettings.Callback);
context.Response.Flush();
}
}
/// <summary>
/// Output compact (id's only for reference data) POI list
/// </summary>
/// <param name="context"></param>
/// <param name="filter"></param>
private void OutputCompactPOIList(HttpContext context, APIRequestParams filter)
{
//get list of charge points as compact POISearchResult List for output:
List<OCM.API.Common.Model.ChargePoint> dataList = new POIManager().GetChargePoints(filter);
int numResults = dataList.Count;
List<POISearchResult> poiList = new List<POISearchResult>();
foreach (var c in dataList)
{
var poi = new POISearchResult
{
ID = c.ID,
Title = c.AddressInfo.Title,
Address = c.AddressInfo.AddressLine1,
Distance = c.AddressInfo.Distance,
Latitude = (double)c.AddressInfo.Latitude,
Longitude = (double)c.AddressInfo.Longitude,
Postcode = c.AddressInfo.Postcode,
UsageTypeID = c.UsageType != null ? c.UsageType.ID : 0,
StatusTypeID = c.StatusType != null ? c.StatusType.ID : 0
};
poiList.Add(poi);
}
var o = new JSONOutputProvider();
string description = "Compact POI List: id=ID, t= Title, u= UsageTypeID, s= StatusTypeID, a=Address, p=Postcode, lt=Latitude, lg=Longitude, d= Distance";
o.PerformSerialisationV2(context.Response.OutputStream, new { status = "OK", description = description, count = poiList.Count, results = poiList }, filter.Callback);
}
/// <summary>
/// Handle output from API
/// </summary>
/// <param name="context"></param>
private async void PerformOutput(HttpContext context)
{
HttpContext.Current.Server.ScriptTimeout = 120; //max script execution time is 2 minutes
System.Diagnostics.Stopwatch stopwatch = new System.Diagnostics.Stopwatch();
stopwatch.Start();
//decide correct reponse type
IOutputProvider outputProvider = null;
var filter = new APIRequestParams();
//set defaults
string outputType = "xml";
filter.DistanceUnit = DistanceUnit.Miles;
filter.MaxResults = 100;
filter.EnableCaching = true;
filter.ParseParameters(context);
//override ?v=2 etc if called via /api/v2/ or /api/v1
if (APIBehaviourVersion > 0) filter.APIVersion = APIBehaviourVersion;
if (APIBehaviourVersion >= 2) filter.Action = DefaultAction;
if (context.Request.Url.Host.ToLower().StartsWith("api") && filter.APIVersion == null)
{
//API version is mandatory for api V2 onwards via api.openchargemap.* hostname
OutputBadRequestMessage(context, "mandatory API Version not specified in request");
return;
}
if (!String.IsNullOrEmpty(context.Request["output"]))
{
outputType = ParseString(context.Request["output"]);
}
else
{
//new default after API V2 is json instead of XML
if (filter.APIVersion >= 2)
{
outputType = "json";
}
}
//change defaults and override settings for deprecated api features
if (filter.APIVersion >= 2)
{
//the following output types are deprecated and will default as JSON
if (outputType == "carwings" || outputType == "rss")
{
OutputBadRequestMessage(context, "specified output type not supported in this API version");
return;
}
}
if (IsRequestByRobot)
{
OutputBadRequestMessage(context, "API requests by robots are temporarily disabled.", statusCode: 503);
return;
}
//determine output provider
switch (outputType)
{
case "xml":
outputProvider = new XMLOutputProvider();
break;
case "carwings":
case "rss":
outputProvider = new RSSOutputProvider();
if (outputType == "carwings") ((RSSOutputProvider)outputProvider).EnableCarwingsMode = true;
break;
case "json":
outputProvider = new JSONOutputProvider();
break;
case "geojson":
outputProvider = new GeoJSONOutputProvider();
break;
case "csv":
outputProvider = new CSVOutputProvider();
break;
case "kml":
outputProvider = new KMLOutputProvider(KMLOutputProvider.KMLVersion.V2);
break;
case "png":
outputProvider = new ImageOutputProvider();
break;
default:
outputProvider = new XMLOutputProvider();
break;
}
if (outputProvider != null)
{
context.Response.ContentEncoding = Encoding.Default;
context.Response.ContentType = outputProvider.ContentType;
if (!(filter.Action == "getcorereferencedata" && String.IsNullOrEmpty(context.Request["SessionToken"])))
{
//by default output is cacheable for 24 hrs, unless requested by a specific user.
context.Response.Cache.SetExpires(DateTime.Now.AddDays(1));
context.Response.Cache.SetCacheability(HttpCacheability.Public);
context.Response.Cache.SetValidUntilExpires(true);
}
if (ConfigurationManager.AppSettings["EnableOutputCompression"] == "true")
{
//apply compression if accepted
string encodings = context.Request.Headers.Get("Accept-Encoding");
if (encodings != null)
{
encodings = encodings.ToLower();
if (encodings.ToLower().Contains("gzip"))
{
context.Response.Filter = new GZipStream(context.Response.Filter, CompressionLevel.Optimal, false);
context.Response.AppendHeader("Content-Encoding", "gzip");
//context.Trace.Warn("GZIP Compression on");
}
else
{
context.Response.Filter = new DeflateStream(context.Response.Filter, CompressionMode.Compress);
context.Response.AppendHeader("Content-Encoding", "deflate");
//context.Trace.Warn("Deflate Compression on");
}
}
}
if (filter.Action == "getchargepoints" || filter.Action == "getpoilist")
{
OutputPOIList(outputProvider, context, filter);
}
if (filter.Action == "getcompactpoilist")
{
//experimental::
OutputCompactPOIList(context, filter);
}
if (filter.Action == "getcorereferencedata")
{
OutputCoreReferenceData(outputProvider, context, filter);
}
if (filter.Action == "geocode")
{
this.OutputGeocodingResult(outputProvider, context, filter);
}
if (filter.Action == "availability")
{
this.OutputAvailabilityResult(outputProvider, context, filter);
}
if (filter.Action == "refreshmirror")
{
try
{
var itemsUpdated = await OCM.Core.Data.CacheManager.RefreshCachedData();
new JSONOutputProvider().GetOutput(context.Response.OutputStream, new { POICount = itemsUpdated, Status = "OK" }, filter);
}
catch (Exception exp)
{
new JSONOutputProvider().GetOutput(context.Response.OutputStream, new { Status = "Error", Message = exp.ToString() }, filter);
}
}
stopwatch.Stop();
System.Diagnostics.Debug.WriteLine("Total output time: " + stopwatch.Elapsed.ToString());
}
}