public void ToKustoExpression_PrometheusQueryShouldReturnValidKustoQuery(string name,
LabelMatcher.Types.Type type, string val, string expected)
{
// Arrange
// Act
var kql = KustoManipulations.ToKustoExpression(name, type, val);
// Assert
CollectionAssert.AreEqual(expected, kql);
}
public static string ToKustoExpression(string name, LabelMatcher.Types.Type type, string value)
{
var keyMap = new Dictionary <string, string>()
{
{ "__name__", "Name" },
{ "job", "Job" },
{ "instance", "Instance" }
};
var resultName = keyMap.ContainsKey(name) ? keyMap[name] : $"tostring(Labels.{name})";
const string queryTemplate = "( {0} {1} '{2}' )";
return(type switch
{
LabelMatcher.Types.Type.Eq => string.Format(queryTemplate, resultName, "==", value),
LabelMatcher.Types.Type.Neq => string.Format(queryTemplate, resultName, "!=", value),
LabelMatcher.Types.Type.Re => string.Format(queryTemplate, resultName, "matches regex", value),
LabelMatcher.Types.Type.Nre => string.Format(queryTemplate, resultName, "!contains", value),
_ => string.Empty
});
private static String GenerateValueExpression(string name, LabelMatcher.Types.Type type, string value)
{
switch (type)
{
case LabelMatcher.Types.Type.Eq:
return($"tostring(label.{name}) == \"{value}\"");
case LabelMatcher.Types.Type.Neq:
return($"tostring(label.{name}) != \"{value}\"");
case LabelMatcher.Types.Type.Re:
return($"tostring(label.{name}) matches regex \"{value}\"");
case LabelMatcher.Types.Type.Nre:
//operator missing
return($"tostring(label.{name}) !contains \"{value}\"");
default:
break;
}
return(String.Empty);
}
