/// <summary>
/// Gets the whole DB structure for the given databse in Influx.
/// </summary>
/// <param name="dbName">Name of the database</param>
/// <returns>Hierarchical structure, Database<Measurement<Tags,Fields>></returns>
///<exception cref="UnauthorizedAccessException">When Influx needs authentication, and no user name password is supplied or auth fails</exception>
///<exception cref="HttpRequestException">all other HTTP exceptions</exception>
public async Task <IInfluxDatabase> GetInfluxDBStructureAsync(string dbName)
{
var dbStructure = new InfluxDatabase(dbName);
var fields = await QueryMultiSeriesAsync(dbName, "SHOW FIELD KEYS");
foreach (var s in fields)
{
var measurement = new InfluxMeasurement(s.SeriesName);
foreach (var e in s.Entries)
{
measurement.Fields.Add(e.FieldKey);
}
dbStructure.Measurements.Add(measurement);
}
var tags = await QueryMultiSeriesAsync(dbName, "SHOW TAG KEYS");
foreach (var t in tags)
{
var measurement = dbStructure.Measurements.FirstOrDefault(x => x.Name == t.SeriesName);
foreach (var e in t.Entries)
{
measurement.Tags.Add(e.TagKey);
}
}
return(dbStructure);
}
/// <summary>
/// Gets the whole DB structure for the given databse in Influx.
/// </summary>
/// <param name="dbName">Name of the database</param>
/// <returns>Hierarchical structure, Database<Measurement<Tags,Fields>></returns>
///<exception cref="UnauthorizedAccessException">When Influx needs authentication, and no user name password is supplied or auth fails</exception>
///<exception cref="HttpRequestException">all other HTTP exceptions</exception>
public async Task <IInfluxDatabase> GetInfluxDBStructureAsync(string dbName)
{
var dbStructure = new InfluxDatabase(dbName);
var retentionPolicies = await GetRetentionPoliciesAsync(dbName);
foreach (var policy in retentionPolicies)
{
dbStructure.MeasurementHierarchy.Add(policy, new HashSet <IInfluxMeasurement>());
var fields = await QueryMultiSeriesAsync(dbName : dbName, retentionPolicy : policy.Name, measurementQuery : "SHOW FIELD KEYS");
foreach (var s in fields)
{
var measurement = new InfluxMeasurement(s.SeriesName);
dbStructure.Measurements.Add(measurement);
dbStructure.MeasurementHierarchy[policy].Add(measurement);
foreach (var e in s.Entries)
{
measurement.Fields.Add(e.FieldKey);
}
measurement.SeriesCount = (await QueryMultiSeriesAsync(dbName: dbName, retentionPolicy: policy.Name, measurementQuery: "SHOW SERIES")).FirstOrDefault().Entries?.Count() ?? -1;
var points = (IDictionary <string, object>)(await QueryMultiSeriesAsync(dbName: dbName, retentionPolicy: policy.Name, measurementQuery: $"select count(*) from \"{s.SeriesName}\"")).FirstOrDefault().Entries?.FirstOrDefault();
//influx returns point counts for each of the fields. Pick the larget of them as total points in the measurement
measurement.PointsCount = measurement.Fields.Select(f => int.Parse(points[$"Count_{f}"].ToString())).Max();
}
var tags = await QueryMultiSeriesAsync(dbName : dbName, retentionPolicy : policy.Name, measurementQuery : "SHOW TAG KEYS");
foreach (var t in tags)
{
var measurement = dbStructure.Measurements.FirstOrDefault(x => x.Name == t.SeriesName);
foreach (var e in t.Entries)
{
measurement.Tags.Add(e.TagKey);
}
}
}
return(dbStructure);
}
/// <summary>
/// Gets the whole DB structure for the given databse in Influx.
/// </summary>
/// <param name="dbName">Name of the database</param>
/// <returns>Hierarchical structure, Database<Measurement<Tags,Fields>></returns>
///<exception cref="UnauthorizedAccessException">When Influx needs authentication, and no user name password is supplied or auth fails</exception>
///<exception cref="HttpRequestException">all other HTTP exceptions</exception>
public async Task<IInfluxDatabase> GetInfluxDBStructureAsync (string dbName)
{
var dbStructure = new InfluxDatabase (dbName);
var fields = await QueryMultiSeriesAsync (dbName, "SHOW FIELD KEYS");
foreach (var s in fields)
{
var measurement = new InfluxMeasurement (s.SeriesName);
foreach (var e in s.Entries)
measurement.Fields.Add (e.FieldKey);
dbStructure.Measurements.Add (measurement);
}
var tags = await QueryMultiSeriesAsync (dbName, "SHOW TAG KEYS");
foreach (var t in tags)
{
var measurement = dbStructure.Measurements.FirstOrDefault (x => x.Name == t.SeriesName);
foreach (var e in t.Entries)
measurement.Tags.Add (e.TagKey);
}
return dbStructure;
}
