v2_get_first_block_epoch.rs

//! Test the `GetFirstBlockEpoch` endpoint.
use anyhow::Context;
use clap::AppSettings;
use concordium_rust_sdk::v2;
use structopt::StructOpt;

#[derive(StructOpt)]
struct App {
    #[structopt(
        long = "node",
        help = "GRPC interface of the node.",
        default_value = "http://localhost:20000"
    )]
    endpoint: v2::Endpoint,

    #[structopt(long = "epoch", help = "Epoch identifier", default_value = "%5,0")]
    epoch: v2::EpochIdentifier,
}

#[tokio::main(flavor = "multi_thread")]
async fn main() -> anyhow::Result<()> {
    let app = {
        let app = App::clap().global_setting(AppSettings::ColoredHelp);
        let matches = app.get_matches();
        App::from_clap(&matches)
    };

    let mut client = v2::Client::new(app.endpoint)
        .await
        .context("Cannot connect.")?;
    let fb = client.get_first_block_epoch(app.epoch).await?;
    println!("{}", fb);
    Ok(())
}