influxdb2

This is a Rust client to InfluxDB using the 2.0 API.

Setup

Add this to cargo.toml:

influxdb2 = "0.3"
influxdb2-structmap = "0.2"
num-traits = "0.2"

Usage

Querying

use chrono::{DateTime, FixedOffset};
use influxdb2::{Client, FromDataPoint};
use influxdb2::models::Query;

#[derive(Debug, FromDataPoint)]
pub struct StockPrice {
    ticker: String,
    value: f64,
    time: DateTime<FixedOffset>,
}

impl Default for StockPrice {
    fn default() -> Self {
        Self {
            ticker: "".to_string(),
            value: 0_f64,
            time: chrono::MIN_DATETIME.with_timezone(&chrono::FixedOffset::east(7 * 3600)),
        }
    }
}

async fn example() -> Result<(), Box<dyn std::error::Error>> {
    let host = std::env::var("INFLUXDB_HOST").unwrap();
    let org = std::env::var("INFLUXDB_ORG").unwrap();
    let token = std::env::var("INFLUXDB_TOKEN").unwrap();
    let client = Client::new(host, org, token);

    let qs = format!("from(bucket: \"stock-prices\") 
        |> range(start: -1w)
        |> filter(fn: (r) => r.ticker == \"{}\") 
        |> last()
    ", "AAPL");
    let query = Query::new(qs.to_string());
    let res: Vec<StockPrice> = client.query::<StockPrice>(Some(query))
        .await?;
    println!("{:?}", res);

    Ok(())
}

Writing

#[derive(Default, WriteDataPoint)]
#[measurement = "cpu_load_short"]
struct CpuLoadShort {
    #[influxdb(tag)]
    host: Option<String>,
    #[influxdb(tag)]
    region: Option<String>,
    #[influxdb(field)]
    value: f64,
    #[influxdb(timestamp)]
    time: i64,
}

async fn example() -> Result<(), Box<dyn std::error::Error>> {
    use chrono::Utc;
    use futures::prelude::*;
    use influxdb2::models::DataPoint;
    use influxdb2::Client;
    use influxdb2_derive::WriteDataPoint;

    let host = std::env::var("INFLUXDB_HOST").unwrap();
    let org = std::env::var("INFLUXDB_ORG").unwrap();
    let token = std::env::var("INFLUXDB_TOKEN").unwrap();
    let bucket = std::env::var("INFLUXDB_BUCKET").unwrap();
    let client = Client::new(host, org, token);
    
    let points = vec![
        CpuLoadShort {
            host: Some("server01".to_owned()),
            region: Some("us-west".to_owned()),
            value: 0.64,
            time: Utc::now().timestamp_nanos(),
        },
        CpuLoadShort {
            host: Some("server02".to_owned()),
            region: None,
            value: 0.64,
            time: Utc::now().timestamp_nanos(),
        },
    ];

    client.write(bucket, stream::iter(points)).await?;
    
    Ok(())
}

Supported Data Types

InfluxDB data point doesn't support every data types supported by Rust. So,
the derive macro only allows for a subset of data types which is also
supported in InfluxDB.

Supported struct field types:

bool
f64
i64
u64 - DEPRECATED, will be removed in version 0.4
String
Vec
chrono::Duration
DateTime

Features

Implemented API

TLS Implementations

This crate uses reqwest under the
hood. You can choose between native-tls and rustls with the features
provided with this crate. native-tls is chosen as the default, like reqwest
does.

# Usage for native-tls (the default).
influxdb2 = "0.3"

# Usage for rustls.
influxdb2 = { version = "0.3", features = ["rustls"], default-features = false }

Development Status

This project is still at alpha status and all the bugs haven't been ironed
yet. With that said, use it at your own risk and feel free to create an issue
or pull request.

abonander/influxdb2