no_id - Identifiant du nœud Fonction interne pour traiter l'événement ENABLE_NODE pour le nœud no_id.

declare
        p_no_id                 alias for $1;
        v_local_node_id int4;
        v_node_row              record;
        v_sub_row               record;
begin
        -- ----
        -- Grab the central configuration lock
        -- ----
        lock table sl_config_lock;

        -- ----
        -- Check that the node is inactive
        -- ----
        select * into v_node_row
                        from sl_node
                        where no_id = p_no_id
                        for update;
        if not found then 
                raise exception 'Slony-I: node % not found', p_no_id;
        end if;
        if v_node_row.no_active then
                return p_no_id;
        end if;

        -- ----
        -- Activate the node and generate sl_confirm status rows for it.
        -- ----
        update sl_node
                        set no_active = 't'
                        where no_id = p_no_id;
        insert into sl_confirm
                        (con_origin, con_received, con_seqno)
                        select no_id, p_no_id, 0 from sl_node
                                where no_id != p_no_id
                                and no_active;
        insert into sl_confirm
                        (con_origin, con_received, con_seqno)
                        select p_no_id, no_id, 0 from sl_node
                                where no_id != p_no_id
                                and no_active;

        -- ----
        -- Generate ENABLE_SUBSCRIPTION events for all sets that
        -- origin here and are subscribed by the just enabled node.
        -- ----
        v_local_node_id := getLocalNodeId('_schemadoc');
        for v_sub_row in select SUB.sub_set, SUB.sub_provider from
                        sl_set S,
                        sl_subscribe SUB
                        where S.set_origin = v_local_node_id
                        and S.set_id = SUB.sub_set
                        and SUB.sub_receiver = p_no_id
                        for update of S
        loop
                perform enableSubscription (v_sub_row.sub_set,
                                v_sub_row.sub_provider, p_no_id);
        end loop;

        return p_no_id;
end;