libpq 6.0.1

Safe binding for libpq
Documentation 
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#[derive(Clone, Copy, Debug, Eq, PartialEq)]
pub enum Status {
    /** The server is running and appears to be accepting connections. */
    Ok,
    /**
     * The server is running but is in a state that disallows connections (startup, shutdown, or
     * crash recovery).
     */
    Reject,
    /**
     * The server could not be contacted. This might indicate that the server is not running, or
     * that there is something wrong with the given connection parameters (for example, wrong port
     * number), or that there is a network connectivity problem (for example, a firewall blocking
     * the connection request).
     */
    NoResponse,
    /**
     * No attempt was made to contact the server, because the supplied parameters were obviously
     * incorrect or there was some client-side problem (for example, out of memory).
     */
    NoAttempt,
}

#[doc(hidden)]
impl From<pq_sys::PGPing> for Status {
    fn from(status: pq_sys::PGPing) -> Self {
        match status {
            pq_sys::PGPing::PQPING_OK => Self::Ok,
            pq_sys::PGPing::PQPING_REJECT => Self::Reject,
            pq_sys::PGPing::PQPING_NO_RESPONSE => Self::NoResponse,
            pq_sys::PGPing::PQPING_NO_ATTEMPT => Self::NoAttempt,
        }
    }
}