Download mongodb FTDC data

Lib crate to enable your application to download FTDC data from mongodb clusters to investigate deeper (e.g. keyhole).

Usage

To download FTDC data from a mongodb cluster you need to provide some input to the CLI:

1. Group key: The group key (or: project id) the respective cluster belongs too. It is encoded into the link you get from atlas when selecting the specific cluster on Atlas UI (e.g.cloud.mongodb.com/v2/{group key}clusters)
2. Replicaset name: The name of the replica set the data should be loaded from. You can either provide the direct targeted replica set name (e.g. atlas-<something>-shard-0) or the name of the shard (e.g some-name-shard-00). Do not forget the number here as it qualifies the shard in case you want data from a sharded cluster. For a standalone replica set it is00 but lets say for a sharded cluster with 3 shards it would be 00, 01, 02.
3. API key: You need to have a valid API key for at least the cluster you want to download FTDC data from.

```rust use error::Error; use reqwest::Client; use service::{FtdcDataService, FtdcLoader};

[tokio::main]

async fn main() -> Result<(), Error> { let groupkey = "..."; let replicasetname = "..."; let size = 10000_000 let public = "..."; let private = "...";

let service = FtdcDataService { client: Client::new() };

service .getftdcdata( groupkey, replicasetname, size, public, private, ) .await .map(|downloadpath| println!("Downloaded to: {}", download_path)) } ```

The data is downloaded to the current directory the application was executed in as a *.tar.gz.