public void ProcessRequest(HttpContext context)
{
try
{
var nameValueCollection = (NameValueCollection)ConfigurationManager.GetSection("rrdbfileserver");
string url = nameValueCollection["url"];
rrdDbAccessInterface = new ServerAccessor(url);//"tcp://server:8100/GetRrdDbAdapter");
//string channelName = context.Request.QueryString["c"];
DateTime start = new DateTime(2005, 12, 19);
DateTime end = new DateTime(2006, 12, 12);
//\Users\miknil\Documents\Visual Studio 2008\Projects\rrd4n\RRDConfigTool\
string databaseName = "car_day.rra";
StringBuilder sb = new StringBuilder();
sb.AppendFormat("- --start \"{0}\" --end \"{1}\"", start.ToShortDateString(), end.ToShortDateString());
sb.Append(" --imgformat PNG");
sb.AppendFormat(" DEF:myruntime=\"{0}\":milage:AVERAGE", databaseName);
sb.Append(" CDEF:mil=myruntime,86400,* LINE2:mil#FF0000 -w 800 -h 400 CDEF:km=myruntime,1000,*");
sb.Append(" SDEF:value_sum=km,TOTAL GPRINT:myruntime:TOTAL:\"usage {0}\"");
GraphParser parser = new GraphParser(sb.ToString());
RrdGraphDef graphDef = parser.CreateGraphDef();
RrdGraph graph_1 = new RrdGraph(graphDef, rrdDbAccessInterface);
RrdGraphInfo info = graph_1.getRrdGraphInfo();
MemoryStream ms = new MemoryStream(info.getBytes());
context.Response.ContentType = "image/png";
context.Response.BinaryWrite(ms.ToArray());
}
catch (Exception ex)
{
context.Response.ContentType = "text/plain";
context.Response.Write(ex.Message);
}
}
public void ShowGraph(RrdGraphDef graphDef)
{
RrdGraph graph_1 = new RrdGraph(graphDef, dbAccess);
RrdGraphInfo info = graph_1.getRrdGraphInfo();
if (info.getByteCount() == 0)
{
return;
}
MemoryStream ms = new MemoryStream(info.getBytes());
view.SetImge(ms);
}