




DROP TYPE IF EXISTS Getsystem_statistics_rs CASCADE;
CREATE TYPE Getsystem_statistics_rs AS (val INTEGER);
Create or replace FUNCTION Getsystem_statistics(v_entity VARCHAR(10), -- /*VM,HOST,USER,SD*/
v_status VARCHAR(20)) -- comma seperated list of status values 
RETURNS Getsystem_statistics_rs
   AS $procedure$
   DECLARE
   v_i Getsystem_statistics_rs;
   v_sql  VARCHAR(4000);
   v_sys_entity VARCHAR(10);
BEGIN
   v_sys_entity := v_entity;
   v_sql := NULL;

   v_sys_entity := upper(v_sys_entity);
   if (v_sys_entity = 'VM') then
      v_sql := 'select count(vm_guid) from vm_dynamic';
   else 
      if (v_sys_entity = 'HOST') then
         v_sql := 'select count(vds_id)  from vds_dynamic';
      else 
         if (v_sys_entity = 'USER') then
            v_sql := 'select count(user_id) from users';
         else 
            if (v_sys_entity = 'TSD') then
               v_sql := 'select count(id) from storage_domain_static';
            else 
               if (v_sys_entity = 'ASD') then
                  v_sql := 'select count(storage_id) from storage_pool_iso_map';
               end if;
            end if;
         end if;
      end if;
   end if;

   if (v_status != '' and v_sys_entity != 'TSD') then
      v_sql := coalesce(v_sql,'') || ' where status in (' || coalesce(v_status,'') || ')';
   end if;
   EXECUTE v_sql INTO v_i;
   RETURN v_i;
END; $procedure$
LANGUAGE plpgsql;



