Function check_peer_lsp_status

plugins/lsps-plugin/src/client.rs:769–803

Returns the `PeerLspStatus`, containing information about the connectivity and the LSP feature bit.

(
    cln_client: &mut ClnRpc,
    peer_id: &str,
)

/// Returns the `PeerLspStatus`, containing information about the connectivity
/// and the LSP feature bit.
async fn check_peer_lsp_status(
    cln_client: &mut ClnRpc,
    peer_id: &str,
) -> Result<PeerLspStatus, anyhow::Error> {
    let res = cln_client
        .call_typed(&ListpeersRequest {
            id: Some(PublicKey::from_str(peer_id)?),
            level: None,
        })
        .await?;

    let peer = match res.peers.first() {
        None => {
            return Ok(PeerLspStatus {
                connected: false,
                has_lsp_feature: false,
            });
        }
        Some(p) => p,
    };

    let connected = peer.connected;
    let has_lsp_feature = if let Some(f_str) = &peer.features {
        let feature_bits = hex::decode(f_str)
            .map_err(|e| anyhow!("Invalid feature bits hex for peer {peer_id}, {f_str}: {e}"))?;
        is_feature_bit_set_reversed(&feature_bits, LSP_FEATURE_BIT)
    } else {
        false
    };

    Ok(PeerLspStatus {
        connected,
        has_lsp_feature,
    })
}

pub fn gen_rand_preimage_hex<R: Rng + CryptoRng>(rng: &mut R) -> String {
    let mut pre = [0u8; 32];