influxdb2.client's Introduction

Influxdb2.Client

Influxdb2读写性能最快的dotnet客户端，读写性能为官方客户端库的180%(本机mock Influxdb服务器，完整的读写流程)

dotnet add package Influxdb2.Client

服务注册

services.AddInfuxdb(o =>
{
    o.Host = new Uri("http://localhost:8086");
    o.Token = "base64 token value";
    o.DefaultOrg = "my-org";
    o.DefaultBucket = "my-bucket";
});

服务获取

MyService(IInfuxdb infuxdb)
{
}

写入数据

var book = new Book();
await infuxdb.WriteAsync(book);

或者

var book = new PointBuilder("Book")
    .SetTag("key", "value")
    .SetField("field", "value")
    .Build();
await infuxdb.WriteAsync(book);

数据属性需要ColumnType标记

class Book
{
    [ColumnType(ColumnType.Tag)]
    public string Serie { get; set; }


    [ColumnType(ColumnType.Field)]
    public string Name { get; set; }


    [ColumnType(ColumnType.Field)]
    public double? Price { get; set; }


    [ColumnType(ColumnType.Field)]
    public bool? SpecialOffer { get; set; }


    [ColumnType(ColumnType.Timestamp)]
    public DateTimeOffset? CreateTime { get; set; } 
}

读取数据

var flux = Flux
    .From(defaultBucket)
    .Range("-3d")
    .Filter(FnBody.R.MeasurementEquals($"{nameof(Book)}"))
    .Pivot()
    .Sort(Columns.Time, desc: true)
    .Limit(10)
    ;

var tables = await infuxdb.QueryAsync(flux);
// 可以映射为任意模型（未必是Book)
var books = tables.Single().ToModels<Book>();

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