Slony-I 1.1.5_RC2 Documentation | ||||
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Function Properties
Language: PLPGSQL
Return Type: bigint
subscribeSet (sub_set, sub_provider, sub_receiver, sub_forward) Makes sure that the receiver is not the provider, then stores the subscription, and publishes the SUBSCRIBE_SET event to other nodes.declare p_sub_set alias for $1; p_sub_provider alias for $2; p_sub_receiver alias for $3; p_sub_forward alias for $4; v_set_origin int4; v_ev_seqno int8; begin -- ---- -- Grab the central configuration lock -- ---- lock table sl_config_lock; -- ---- -- Check that this is called on the receiver node -- ---- if p_sub_provider != getLocalNodeId('_schemadoc') then raise exception 'Slony-I: subscribeSet() must be called on provider'; end if; -- ---- -- Check that the origin and provider of the set are remote -- ---- select set_origin into v_set_origin from sl_set where set_id = p_sub_set; if not found then raise exception 'Slony-I: set % not found', p_sub_set; end if; if v_set_origin = p_sub_receiver then raise exception 'Slony-I: set origin and receiver cannot be identical'; end if; if p_sub_receiver = p_sub_provider then raise exception 'Slony-I: set provider and receiver cannot be identical'; end if; -- --- -- Check to see if the set contains any tables - gripe if not - bug #1226 -- --- if not exists (select true from sl_table where tab_set = p_sub_set) then raise notice 'subscribeSet:: set % has no tables - risk of problems - see bug 1226', p_sub_set; raise notice 'http://gborg.postgresql.org/project/slony1/bugs/bugupdate.php?1226'; end if; -- ---- -- Create the SUBSCRIBE_SET event -- ---- v_ev_seqno := createEvent('_schemadoc', 'SUBSCRIBE_SET', p_sub_set, p_sub_provider, p_sub_receiver, case p_sub_forward when true then 't' else 'f' end); -- ---- -- Call the internal procedure to store the subscription -- ---- perform subscribeSet_int(p_sub_set, p_sub_provider, p_sub_receiver, p_sub_forward); -- ---- -- Submit listen management events -- ---- perform RebuildListenEntries(); return v_ev_seqno; end;