/// <summary>
/// Adds single archive to RRD definition from a RRDTool-like
/// archive definition string. The string must have five elements separated with colons
/// (:) in the following order:<p>
/// <code>
/// RRA:consolidationFunction:XFilesFactor:steps:rows
/// </code>
/// For example:</p>
/// <code>
/// RRA:AVERAGE:0.5:10:1000
/// </code>
/// For more information on archive definition parameters see <code>rrdcreate</code>
/// man page.
/// </summary>
/// <param name="rrdToolArcDef">Archive definition string with the syntax borrowed from RRDTool.</param>
public static ArcDef FromRrdToolString(String rrdToolArcDef)
{
var rrdException = new RrdException("Wrong rrdtool-like archive definition: " + rrdToolArcDef);
String[] tokens = rrdToolArcDef.Split(':');
if (tokens.Length != 5)
throw rrdException;
if (!tokens[0].Equals("RRA", StringComparison.InvariantCultureIgnoreCase))
{
throw rrdException;
}
ConsolidationFunction consolFun;
if (!Enum.TryParse(tokens[1], true, out consolFun))
throw rrdException;
double xff = Util.ParseDouble(tokens[2]);
if(double.IsNaN(xff))
{
throw rrdException;
}
int steps;
if (!int.TryParse(tokens[3], out steps))
{
throw rrdException;
}
int rows;
if (!int.TryParse(tokens[4], out rows))
{
throw rrdException;
}
return new ArcDef(consolFun, xff, steps, rows);
}
/// <summary>
/// Create a DsDef from a RRDTool-like datasource definition string. The string must have six elements separated with colons
/// (:) in the following order:<p>
/// <code>
/// DS:name:type:heartbeat:minValue:maxValue
/// </code>
/// For example:</p>
/// <code>
/// DS:input:COUNTER:600:0:U
/// </code>
/// For more information on datasource definition parameters see <code>rrdcreate</code>
/// man page.
/// </summary>
/// <param name="rrdToolDataSourceDefinition"></param>
public static DsDef FromRrdToolString(string rrdToolDataSourceDefinition)
{
var rrdException = new RrdException("Wrong rrdtool-like datasource definition: " + rrdToolDataSourceDefinition);
string[] tokens = rrdToolDataSourceDefinition.Split(':');
if (tokens.Length != 6)
{
throw rrdException;
}
if (!tokens[0].Equals("DS", StringComparison.InvariantCultureIgnoreCase))
{
throw rrdException;
}
String dsName = tokens[1];
DataSourceType dsType;
if (!Enum.TryParse(tokens[2], true, out dsType))
throw new RrdException("Invalid DataSource Type");
long dsHeartbeat;
if (!long.TryParse(tokens[3], out dsHeartbeat))
{
throw rrdException;
}
double minValue = Double.NaN;
if (!tokens[4].Equals("U", StringComparison.InvariantCultureIgnoreCase))
{
minValue = Util.ParseDouble(tokens[4]);
if(double.IsNaN(minValue))
throw rrdException;
}
double maxValue = Double.NaN;
if (!tokens[5].Equals("U", StringComparison.InvariantCultureIgnoreCase))
{
maxValue = Util.ParseDouble(tokens[5]);
if (double.IsNaN(maxValue))
throw rrdException;
}
return new DsDef(dsName,dsType,dsHeartbeat,minValue,maxValue);
}
