tari_comms 5.2.1

//  Copyright 2021, The Tari Project
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use crate::peer_manager::{NodeId, PeerManagerError};

/// Extension trait for Result<Option<T>, PeerManagerError>.
pub trait OrNotFound {
    type Value;
    type Error;
    fn or_not_found(self, node_id: &NodeId) -> Result<Self::Value, Self::Error>;
}

impl<T> OrNotFound for Result<Option<T>, PeerManagerError> {
    type Error = PeerManagerError;
    type Value = T;

    fn or_not_found(self, node_id: &NodeId) -> Result<Self::Value, Self::Error> {
        self.and_then(|val| val.ok_or(PeerManagerError::peer_not_found(node_id)))
    }
}