setAddTable_int (set_id, tab_id, tab_fqname, tab_idxname, tab_comment) This function processes the SET_ADD_TABLE event on remote nodes, adding a table to replication if the remote node is subscribing to its replication set.
declare
p_set_id alias for $1;
p_tab_id alias for $2;
p_fqname alias for $3;
p_tab_idxname alias for $4;
p_tab_comment alias for $5;
v_tab_relname name;
v_tab_nspname name;
v_local_node_id int4;
v_set_origin int4;
v_sub_provider int4;
v_relkind char;
v_tab_reloid oid;
begin
-- ----
-- Grab the central configuration lock
-- ----
lock table sl_config_lock;
-- ----
-- For sets with a remote origin, check that we are subscribed
-- to that set. Otherwise we ignore the table because it might
-- not even exist in our database.
-- ----
v_local_node_id := getLocalNodeId('_schemadoc');
select set_origin into v_set_origin
from sl_set
where set_id = p_set_id;
if not found then
raise exception 'Slony-I: setAddTable_int(): set % not found',
p_set_id;
end if;
if v_set_origin != v_local_node_id then
select sub_provider into v_sub_provider
from sl_subscribe
where sub_set = p_set_id
and sub_receiver = getLocalNodeId('_schemadoc');
if not found then
return 0;
end if;
end if;
-- ----
-- Get the tables OID and check that it is a real table
-- ----
select PGC.oid, PGC.relkind, PGC.relname, PGN.nspname into v_tab_reloid, v_relkind, v_tab_relname, v_tab_nspname
from "pg_catalog".pg_class PGC, "pg_catalog".pg_namespace PGN
where PGC.relnamespace = PGN.oid
and slon_quote_input(p_fqname) = slon_quote_brute(PGN.nspname) ||
'.' || slon_quote_brute(PGC.relname);
if not found then
raise exception 'Slony-I: setAddTable(): table % not found',
p_fqname;
end if;
if v_relkind != 'r' then
raise exception 'Slony-I: setAddTable(): % is not a regular table',
p_fqname;
end if;
if not exists (select indexrelid
from "pg_catalog".pg_index PGX, "pg_catalog".pg_class PGC
where PGX.indrelid = v_tab_reloid
and PGX.indexrelid = PGC.oid
and PGC.relname = p_tab_idxname)
then
raise exception 'Slony-I: setAddTable(): table % has no index %',
p_fqname, p_tab_idxname;
end if;
-- ----
-- Add the table to sl_table and create the trigger on it.
-- ----
insert into sl_table
(tab_id, tab_reloid, tab_relname, tab_nspname,
tab_set, tab_idxname, tab_altered, tab_comment)
values
(p_tab_id, v_tab_reloid, v_tab_relname, v_tab_nspname,
p_set_id, p_tab_idxname, false, p_tab_comment);
perform alterTableForReplication(p_tab_id);
return p_tab_id;
end;