/// <summary>
///
/// </summary>
/// <returns></returns>
public static string GetGroupBy(Time.Range r)
{
var from = DateTimeMathParser.ToDateTime(r.From, false);
var to = DateTimeMathParser.ToDateTime(r.To, true);
return((from.HasValue && to.HasValue) ? GetGroupBy(from.Value, to.Value) : "1m");
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public string Build(string root, Time.Range r)
{
var list = this
.Where(x => x.Params?.Length > 0)
.ToList();
var groupByTime = list.FirstOrDefault(x => x.Type == GroupBy.Kind.Time);
var groupByFill = list.FirstOrDefault(x => x.Type == GroupBy.Kind.Fill);
var groupByTag = list
.Where(x => x.Type == GroupBy.Kind.Tag)
.ToList();
if (null != groupByTime)
{
var influxGroupBy = InfluxDateTimeHelper.GetGroupBy(r);
//query = query.Replace( VmFilter.TIME_FILTER_KEY, influxFilter );
//var gb = ( this.range ) ? this.getOptimalAutoGroupBy() : groupByTime.params[ 0 ];
var gb = groupByTime.Params?[0];
root = $"{root} GROUP BY time({gb})";
var groupByAutoIndex = root.IndexOf(GROUP_BY_AUTO_KEY);
if (-1 != groupByAutoIndex)
{
root = root.Replace(GROUP_BY_AUTO_KEY, influxGroupBy); // TODO
}
}
if (groupByTag.Count > 0)
{
root = (null == groupByTime) ? $"{root} GROUP BY" : $"{root},";
var index = 0;
groupByTag
.ForEach(e =>
{
var i = index > 0 ? ", " : " ";
root = $"{root}{i} \"{e.Params [ 0 ]}\"";
++index;
});
}
if (null != groupByFill)
{
root = $"{root} FILL({groupByFill.Params [ 0 ] })";
}
return(root);
}
/// <summary>
///
/// </summary>
/// <returns></returns>
private string RenderMeasurement(Time.Range r)
{
var meas = (string.IsNullOrEmpty(Measurement)) ? "measurement" : Measurement;
var rp = (!string.IsNullOrEmpty(Policy) && Policy != "default") ? $"\"{Policy}\"." : "";
var root = $"{rp}\"{meas}\"";
var cond = Tags?.Build() ?? string.Empty;
var timeFilter = InfluxDateTimeHelper.GetFilter(r);
if (!string.IsNullOrEmpty(cond))
{
root = $"{root} WHERE ({cond}) and {timeFilter}";
}
else
{
// TODO
root = $"{root} WHERE {timeFilter}";
}
if (null != GroupBy)
{
root = GroupBy?.Build(root, r);
}
if (Order != OrderByTime.Asc)
{
root = $"{root} ORDER BY time DESC";
}
if (Limit > 0)
{
root = $"{root} LIMIT {Limit}";
}
if (SLimit > 0)
{
root = $"{root} SLIMIT {SLimit}";
}
return(root);
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public static string GetFilter(Time.Range range)
{
if (null == range)
{
return(TIME_FILTER);
}
var from = GetTime(range?.From, false);
var to = GetTime(range?.To, true);
var fromIsAbsolute = from.EndsWith("ms");
if (to == "now()" && !fromIsAbsolute)
{
return($"time >= {from}");
}
return($"time >= {from} and time <= {to}");
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public string Compile(Time.Range r = null)
{
var res = string.Empty;
if (UseRawQuery && !string.IsNullOrEmpty(RawQuery))
{
res = RawQuery;
}
else
{
var sb = new StringBuilder();
sb.Append($"SELECT {Fields?.Build()} FROM {RenderMeasurement( r )}");
res = sb.ToString();
}
//InfluxDateTimeHelper.GetFilter()
return(res);
}
