Added support for token auth

[sunng87]

Description

This patch adds support for token auth to make it easier to use backward compatibility API of influxdb 2.0

Checklist

• Formatted code using cargo fmt --all
• Linted code using clippy cargo clippy --all-targets --all-features -- -D warnings
• Updated README.md using cargo readme -r influxdb -t ../README.tpl > README.md
• Reviewed the diff. Did you leave any print statements or unnecessary comments?
• Any unfinished work that warrants a separate issue captured in an issue with a TODO code comment

TODO items

• improve github workflow and integration tests to test on influxdb 1.8 and 2.0 individually
• add doc for influxdb 2.0 authorization usage. For now, the username/password auth is not compatible with 1.x so you can only use token auth on 2.0.

[Empty2k12]

@sunng87 Thanks for this contribution! 🚀 What's your plan to get this merged? Is there anything I can help you with?

[moisesdelacruz]

Hello,

I just did tests with InfluxQL in cURL in terminal and it works very fast (milliseconds), now the same query takes up to 19 seconds in influxdb-rust.

Any idea what the problem may be?

[Empty2k12]

@moisesdelacruz Could you open a separate issue with the curl command you're using and the code snippet which is taking so long? Thanks!

[moisesdelacruz]

@Empty2k12 Thanks for answering, comment here, because the test was done with Influxdb v2 and the branch of this PR.

But I will open the new Issue.

[Empty2k12]

@moisesdelacruz Sorry for misunderstanding, thought you were having an issue with the released library. If it's caused by this PR, here's the right place.

[moisesdelacruz]

In this case it is bringing a month of data, where in every second there is at least one record.

• Rust Version: rustc 1.50.0 (cb75ad5db 2021-02-10)
• Runtime version (e.g. Tokio): 0.2.22
• OS Version: MacOS 10.14.6

Steps to Reproduce:

#[tokio::main]
async fn main() {
    // Connect to db `test` on `http://localhost:8086`
    let client = Client::new("https://influxdb-host", "example_db")
        .with_token("jwt");

    // Let's see if the data we wrote is there
    let read_query = Query::raw_read_query("SELECT * FROM example_db.example_rp.history WHERE tag='example'");

    let start = Time::now();
    let result = client
        .query(&read_query)
        .await;
    let end = Time::now();

    println!("{}", result.unwrap());
    println!("{:?}", end - start); // Duration { seconds: 16, nanoseconds: 823561000 }
}

VS

curl --get https://influxdb-host/query?db=example_db \
  --header "Authorization: Token jwt" \
  --data-urlencode "q=SELECT * FROM example_db.example_rp.history WHERE tag='example'"

# took miliseconds

[sunng87]

@Empty2k12 Sorry for late response. I have been pretty busy these days. Most work should have been done. I'm going to setup CI to verify the lib on both InfluxDB 1.x and 2.0

[moisesdelacruz]

Hello @Empty2k12 and @sunng87, I have already checked this PR on several occasions, and I think that the performance problem comes from before and not from this feature, unfortunately, all my data is in Influxdb v2 and I cannot test with the published version of this module.

This PR looks good, I think we should look for the problem in another issue.

Issue: #91

[msrd0]

What's the status on this PR?

[sunng87]

@msrd0 I was not able to test this on influxdb 2.0 over the CI. Its setup process is a little bit confusing. Help is welcomed.

[isarrider]

is there an update here?

[fredrik-jansson-se]

Any update? I was hoping to use the rust client in a project, seems like I'm blocked atm.

[msrd0]

@fredrik-jansson-se If there were any updates, they would be posted here.

Someone needs to rebase these changes onto the main branch and setup CI to test with influxdb v2.0.

[msrd0]

This change has been merged as part of #118