Hi,

We used zooproject in a clustered mode. So we have a database backend to share ongoing informations of running services between 2 ZOO-Kernel instances. When the load on the cluster increases, some requests fails due to databases errors :

ERROR 1: ERROR: duplicate key value violates unique constraint "services_osid_key" DÉTAIL : Key (osid)=(1593003150) already exists. ERROR 1: ERROR: insert or update on table "responses" violates foreign key constraint "responses_uuid_fkey" DÉTAIL : Key (uuid)=(519e1ea2-b481-11ea-917c-005056b8dc20) is not present in table "services".

• The osid value calculated by the kernel is not unique

The osid is calculated by the script zoo-project/zoo-kernel/zoo_service_loader.c (line 830) : sprintf (tmpBuff, "%i", (cpid + ((int) tp.tv_sec + (int) tp.tv_usec)));

• In some cases, the PID variation is cancelled by the timestamp variation

Current ZOO-Kernel implementation offer only to provide information relative to the pourcentage of operation completed of the running service. Nevertheless, many times it may be useful to also add a message providing details on the current operation currently running.

Updating ZOO.Class object with the OpenLayers?.CLass methods of OL 2.11