private Dictionary<string, object> PrepareGraphParams(GraphDefinition gd, DrawOptions opts)
{
var dic = new Dictionary<string, object>();
dic["step"] = opts.Step.HasValue ? opts.Step.Value : 0;
dic["width"] = opts.Width.HasValue ? opts.Width : 0;
dic["height"] = opts.Height.HasValue ? opts.Height : 0;
dic["graphDefinitionId"] = gd.Id;
dic["graphTitle"] = gd.Title.Replace("\"", "\\\"");
return dic;
}
public TimeSeriesData ExportGraphData(GraphDefinition gd, DrawOptions opts)
{
var cmdtext = BuildRrdGraphCmdline(gd, opts, null, null, true);
string ret = RunRrdWithCommandline(cmdtext);
var doc = new XmlDocument();
doc.LoadXml(ret);
var x = new TimeSeriesData();
x.DataColumns = new List<string>();
x.Rows = new List<TimeSeriesData.Row>();
x.StartTime = FromUnixTime(int.Parse(doc.DocumentElement.SelectSingleNode("meta/start").InnerText));
x.EndTime = FromUnixTime(int.Parse(doc.DocumentElement.SelectSingleNode("meta/end").InnerText));
x.StepSecs = int.Parse(doc.DocumentElement.SelectSingleNode("meta/step").InnerText);
foreach (XmlElement el in doc.DocumentElement.SelectNodes("meta/legend/entry"))
{
x.DataColumns.Add(el.InnerText);
}
foreach (XmlElement el in doc.DocumentElement.SelectNodes("data/row"))
{
var r = new TimeSeriesData.Row();
r.T = Int32.Parse(el.SelectSingleNode("t").InnerText);
r.Timestamp = FromUnixTime(r.T);
var v = new List<double>();
foreach (XmlElement xv in el.SelectNodes("v"))
{
v.Add(ParseDouble(xv.InnerText));
}
r.V = v.ToArray();
x.Rows.Add(r);
}
return x;
}
protected string BuildRrdGraphCmdline(GraphDefinition gd, DrawOptions opts, IEnumerable<RrdEventInfo> addEvents, string destinationFile, bool asXport)
{
StringWriter cmd = new StringWriter();
if (asXport)
{
cmd.Write("xport ");
if (opts.Width.HasValue) cmd.Write(" -m {0}", opts.Width.Value);
}
else
{
if (destinationFile != null) cmd.Write("graphv \"{0}\"", destinationFile);
if (!string.IsNullOrEmpty(gd.AdditionalCmdParams)) cmd.Write(" " + gd.AdditionalCmdParams);
if (opts.Width.HasValue) cmd.Write(" -w {0}", opts.Width.Value);
if (opts.Height.HasValue) cmd.Write(" -h {0}", opts.Height.Value);
}
if (!string.IsNullOrEmpty(opts.StartTime)) cmd.Write(" -s \"{0}\"", opts.StartTime);
if (!string.IsNullOrEmpty(opts.EndTime)) cmd.Write(" -e \"{0}\"", opts.EndTime);
if (opts.Step.HasValue) cmd.Write(" --step {0}", opts.Step.Value);
if (gd.Defs == null) throw new Exception("DEFs are required");
foreach (var d in gd.Defs)
{
cmd.Write(" " + d.ToRRDString());
}
if (gd.CVDefs != null)
{
foreach (var cvd in gd.CVDefs)
{
cmd.Write(" " + cvd.ToRRDString());
}
}
for (int i = 0; i < gd.Elements.Count; i++)
{
var el = gd.Elements[i];
if (el.Hide) continue;
if (opts.SkipElements != null && opts.SkipElements.Contains(i)) continue;
if (asXport)
{
if (el.Op == GraphOperation.AREA || el.Op == GraphOperation.LINE1 || el.Op == GraphOperation.LINE2
|| el.Op == GraphOperation.LINE3 || el.Op == GraphOperation.TICK)
{
cmd.Write(" XPORT:{0}{1}", el.Value, string.IsNullOrEmpty(el.Legend) ? "" : string.Format(":\"{0}\"", el.Legend));
}
}
else if (destinationFile != null) cmd.Write(" " + el.ToRRDString());
}
if (addEvents != null && destinationFile != null)
{
addEvents = addEvents.OrderBy(x => x.Time);
foreach (var ev in addEvents)
{
cmd.Write(" " + ev.ToRRDString());
}
}
var cmdtext = cmd.ToString();
var dic = PrepareGraphParams(gd, opts);
return Utils.SubstValue(cmdtext, dic);
}
public RrdImageInfo DrawGraph(GraphDefinition gd, DrawOptions opts, IEnumerable<RrdEventInfo> addEvents, string destinationFile)
{
var cmdtext = BuildRrdGraphCmdline(gd, opts, addEvents, destinationFile, false);
string ret = RunRrdWithCommandline(cmdtext);
var ii = new RrdImageInfo();
ii.FileName = destinationFile;
log.Debug("Img info: {0}", ret);
var dt = ParseRRDInfo(ret, true);
if (dt.ContainsKey("graph_start"))
{
ii.GraphStartTime = Convert.ToInt32(dt["graph_start"]);
ii.Start = FromUnixTime(ii.GraphStartTime);
}
if (dt.ContainsKey("graph_end"))
{
ii.GraphEndTime = Convert.ToInt32(dt["graph_end"]);
ii.End = FromUnixTime(ii.GraphEndTime);
}
if (dt.ContainsKey("graph_top")) ii.GraphTop = Convert.ToInt32(dt["graph_top"]);
if (dt.ContainsKey("graph_left")) ii.GraphLeft = Convert.ToInt32(dt["graph_left"]);
if (dt.ContainsKey("graph_width")) ii.GraphWidth = Convert.ToInt32(dt["graph_width"]);
if (dt.ContainsKey("graph_height")) ii.GraphHeight = Convert.ToInt32(dt["graph_height"]);
if (dt.ContainsKey("value_min")) ii.MinValue = Convert.ToDouble(dt["value_min"]);
if (dt.ContainsKey("value_max")) ii.MaxValue = Convert.ToDouble(dt["value_max"]);
if (addEvents != null)
{
ii.Events = new List<RrdImageInfo.ImgEventInfo>();
foreach (var ev in addEvents)
{
if (ev.Time < ii.GraphStartTime || ev.Time > ii.GraphEndTime) continue;
ii.Events.Add(new RrdImageInfo.ImgEventInfo
{
EventId = ev.EventId,
Time = ev.Time,
GraphX = GetGraphXForTime(ev.Time, ii.GraphStartTime, ii.GraphEndTime, ii.GraphWidth)
});
}
}
ii.UpdateSec = 300;
return ii;
}