Struct paho_mqtt::client_persistence::ClientPersistenceBridge

pub struct ClientPersistenceBridge;

An empty struct used to collect the persistence callback funtions from the C library. These functions receive the persistence callbacks from the C library and then pass them on to the user-supplied struct which implements the ClientPersistence trait.

Methods

impl ClientPersistenceBridge

unsafe extern "C" fn on_open(
    handle: *mut *mut c_void,
    client_id: *const c_char,
    server_uri: *const c_char,
    context: *mut c_void
) -> c_int

unsafe extern "C" fn on_close(handle: *mut c_void) -> c_int

unsafe extern "C" fn on_put(
    handle: *mut c_void,
    key: *mut c_char,
    bufcount: c_int,
    buffers: *mut *mut c_char,
    buflens: *mut c_int
) -> c_int

unsafe extern "C" fn on_get(
    handle: *mut c_void,
    key: *mut c_char,
    buffer: *mut *mut c_char,
    buflen: *mut c_int
) -> c_int

unsafe extern "C" fn on_remove(handle: *mut c_void, key: *mut c_char) -> c_int

unsafe extern "C" fn on_keys(
    handle: *mut c_void,
    keys: *mut *mut *mut c_char,
    nkeys: *mut c_int
) -> c_int

unsafe extern "C" fn on_clear(handle: *mut c_void) -> c_int

unsafe extern "C" fn on_contains_key(
    handle: *mut c_void,
    key: *mut c_char
) -> c_int