Function fetch_actor

src/helper.rs:531–564

(agent: &Agent, canister_id: Principal)

#[tokio::main]
async fn fetch_actor(agent: &Agent, canister_id: Principal) -> anyhow::Result<CanisterInfo> {
    let response = fetch_metadata(agent, canister_id, "metadata/candid:service").await;
    let profiling = fetch_metadata(agent, canister_id, "metadata/name")
        .await
        .ok()
        .as_ref()
        .and_then(|bytes| Decode!(bytes, BTreeMap<u16, String>).ok());
    let candid = match response {
        Ok(blob) => std::str::from_utf8(&blob)?.to_owned(),
        Err(_) => {
            let response = agent
                .query(&canister_id, "__get_candid_interface_tmp_hack")
                .with_arg(Encode!()?)
                .call()
                .await;
            match response {
                Ok(response) => Decode!(&response, String)?,
                Err(_) => {
                    return Ok(CanisterInfo {
                        env: Default::default(),
                        methods: Default::default(),
                        init: None,
                        profiling,
                    })
                }
            }
        }
    };
    did_to_canister_info(
        &format!("did file for {canister_id}"),
        FileSource::Text(&candid),
        profiling,
    )
}

pub enum FileSource<'a> {
    Text(&'a str),