InfluxDB Http API 与SDK API 测试

Http 类似Rest的接口使用起来很方便，Sdk的接口是原生的适合改造和理解内部实现的原理。具体怎么用视情况而定，web端直接通过浏览器就可以访问，可以快速查看数据并且可以跨语言访问，SDK基于nuget包的方式更适合扩展性的项目。

目录

Http API

Sdk API

测试

条件查询

GIt下载

---

Http API

using System;

namespace InfluxBD
{
    /// 

    /// InfluxDB时序数据库操作HTTP客户端
    /// 参考:https://www.cnblogs.com/dehai/p/4887309.html
    /// 
    public class HttpInfluxDBClient
    {
        string _baseAddress;
        string _username;
        string _password;

        /// 

        /// 构造函数
        /// 
        /// 
        /// 
        /// 
        public HttpInfluxDBClient(string baseAddress, string username, string password)
        {
            this._baseAddress = baseAddress;
            this._username = username;
            this._password = password;
        }

        public string CreateDatabase(string database)
        {
            string sql = "CREATE DATABASE " + database;
            string url = _baseAddress + string.Format("/query?q={0}", sql);
            string result = HttpHelper.Post(url, sql, _username, _password);
            return result;
        }


        public string DeleteDatabase(string database)
        {
            string sql = "DROP DATABASE " + database;
            string url = _baseAddress + string.Format("/query?q={0}", sql);
            string result = HttpHelper.Post(url, sql, _username, _password);
            return result;
        }


        public string GetDatabases()
        {
            string sql = "SHOW DATABASES";
            string url = _baseAddress + string.Format("/query?q={0}", sql);
            string result = HttpHelper.Get(url, _username, _password);
            return result;
        }

        /// 

        /// 读取数据
        /// 
        /// 
        /// 
        /// 
        public string Query(string database, string sql)
        {
            string url = _baseAddress + string.Format("/query?db={0}&q={1}", database, sql);
            string result = HttpHelper.Get(url, _username, _password);
            return result;
        }

        /// 

        /// 写入数据
        /// 
        /// 
        /// 示例:test,tag=logs Field0=10,Field1=10,Field2=20
        /// 
        public string Write(string database, string sql)
        {
            string url = _baseAddress + string.Format("/write?db={0}", database);
            string result = HttpHelper.Post(url, sql, _username, _password);
            return result;
        }
    }
}

对于其他语言都是通用的，很方便。

Sdk API

using InfluxDB.Net;
using InfluxDB.Net.Enums;
using InfluxDB.Net.Infrastructure.Configuration;
using InfluxDB.Net.Infrastructure.Influx;
using InfluxDB.Net.Models;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;

namespace InfluxBD.Sdk
{
    public class InfluxDBSdkHelper
    {
        private InfluxDb _client;

        /// 

        /// 操作状态回调
        /// 
        /// 
        public delegate void StatusCallBack(bool status);

        /// 

        /// 操作结果回调
        /// 
        /// 
        public delegate void ResultCallBack(string json);

        public InfluxDBSdkHelper(string baseUrl, string username, string password)
        {
            _client = new InfluxDb(baseUrl, username, password);
        }

        public async void CreateDatabase(string database, StatusCallBack statusCallBack)
        {
            InfluxDbApiResponse response = await _client.CreateDatabaseAsync(database);
            statusCallBack?.Invoke(response.Success);
        }


        public async void DeleteDatabase(string database, StatusCallBack statusCallBack)
        {   
            InfluxDbApiResponse deleteResponse = await _client.DropDatabaseAsync(database);
            statusCallBack?.Invoke(deleteResponse.Success);
        }


        public async void GetDatabases(ResultCallBack resultCallBack)
        { 
            List databases = await _client.ShowDatabasesAsync();
            string result = Newtonsoft.Json.JsonConvert.SerializeObject(databases);
            resultCallBack?.Invoke(result);
        }

        public async void Write(string database, InfluxDB.Net.Models.Point point, StatusCallBack statusCallBack)
        {
            //基于InfluxData.Net.InfluxDb.Models.Point实体准备数据
            //var point = new Point()
            //{
            //    Measurement = "logs",//表名
            //    Tags = new Dictionary()
            //    {
            //       { "Id", 158}
            //    },
            //    Fields = new Dictionary()
            //    {
            //       { "Val", "webInfo" }
            //    },
            //    Timestamp = DateTime.UtcNow
            //};
            InfluxDbApiResponse writeResponse = await _client.WriteAsync(database, point);
            statusCallBack?.Invoke(writeResponse.Success);
        }

        public async void Query(string database,string sql, ResultCallBack resultCallBack)
        {
            List series = await _client.QueryAsync(database, sql);
            string result = Newtonsoft.Json.JsonConvert.SerializeObject(series); 
            resultCallBack?.Invoke(result);
        }

    }
}

测试

以Http API为例，数据库连接和账号信息：

保存数据：表（test） 标签（type,可以多个，任意类型） 字段（Field0..，数值类型)

查询数据：查询和普通sql差不多，条件查询可以去看官方文档

浏览器可以这样访问：
http://172.16.9.229:8086/query?u=admin&p=admin&db=rtvsweb&q=show%20databases
http://172.16.9.229:8086/query?u=admin&p=admin&db=rtvsweb&q=select%20*%20from%20logs

注:因为本地是window10上安装的Docker每次开机后需要重启Docker，我的influxdb是安装在docker里面的，懒得启动了，所以上面的测试没有展示数据敬请见谅。

条件查询

GIt下载

项目地址:https://github.com/MSAspDotNetCore/InfluxDBUtilAndTest