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><A
NAME="FUNCTION.CHECK-UNCONFIRMED-LOG"
>8.32. check_unconfirmed_log()</A
></H1
><P
>       <P
><B
>Function Properties</B
></P
><P
><B
>Language: </B
>PLPGSQL</P
><P
><B
>Return Type: </B
>boolean</P
>
 
       
        </P><PRE
CLASS="PROGRAMLISTING"
>declare
	v_rc		bool = false;
	v_error		bool = false;
	v_origin	integer;
	v_allconf	bigint;
	v_allsnap	txid_snapshot;
	v_count		bigint;
begin
	--
	-- Loop over all nodes that are the origin of at least one set
	--
	for v_origin in select distinct set_origin as no_id
			from sl_set loop
		--
		-- Per origin determine which is the highest event seqno
		-- that is confirmed by all subscribers to any of the
		-- origins sets.
		--
		select into v_allconf min(max_seqno) from (
				select con_received, max(con_seqno) as max_seqno
					from sl_confirm
					where con_origin = v_origin
					and con_received in (
						select distinct sub_receiver
							from sl_set as SET,
								sl_subscribe as SUB
							where SET.set_id = SUB.sub_set
							and SET.set_origin = v_origin
						)
					group by con_received
			) as maxconfirmed;
		if not found then
			raise NOTICE 'check_unconfirmed_log(): cannot determine highest ev_seqno for node % confirmed by all subscribers', v_origin;
			v_error = true;
			continue;
		end if;

		--
		-- Get the txid snapshot that corresponds with that event
		--
		select into v_allsnap ev_snapshot
			from sl_event
			where ev_origin = v_origin
			and ev_seqno = v_allconf;
		if not found then
			raise NOTICE 'check_unconfirmed_log(): cannot find event %,% in sl_event', v_origin, v_allconf;
			v_error = true;
			continue;
		end if;

		--
		-- Count the number of log rows that appeard after that event.
		--
		select into v_count count(*) from (
			select 1 from sl_log_1
				where log_origin = v_origin
				and log_txid &gt;= &quot;pg_catalog&quot;.txid_snapshot_xmax(v_allsnap)
			union all
			select 1 from sl_log_1
				where log_origin = v_origin
				and log_txid in (
					select * from &quot;pg_catalog&quot;.txid_snapshot_xip(v_allsnap)
				)
			union all
			select 1 from sl_log_2
				where log_origin = v_origin
				and log_txid &gt;= &quot;pg_catalog&quot;.txid_snapshot_xmax(v_allsnap)
			union all
			select 1 from sl_log_2
				where log_origin = v_origin
				and log_txid in (
					select * from &quot;pg_catalog&quot;.txid_snapshot_xip(v_allsnap)
				)
		) as cnt;

		if v_count &gt; 0 then
			raise NOTICE 'check_unconfirmed_log(): origin % has % log rows that have not propagated to all subscribers yet', v_origin, v_count;
			v_rc = true;
		end if;
	end loop;

	if v_error then
		raise EXCEPTION 'check_unconfirmed_log(): aborting due to previous inconsistency';
	end if;

	return v_rc;
end;</PRE
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slony1-2-doc 2.2.3-1 / usr / share / doc / slony1-2-doc / adminguide / function.check-unconfirmed-log.html
