/*___INFO__MARK_BEGIN__*/
/*************************************************************************
 *
 *  The Contents of this file are made available subject to the terms of
 *  the Sun Industry Standards Source License Version 1.2
 *
 *  Sun Microsystems Inc., March, 2001
 *
 *
 *  Sun Industry Standards Source License Version 1.2
 *  =================================================
 *  The contents of this file are subject to the Sun Industry Standards
 *  Source License Version 1.2 (the "License"); You may not use this file
 *  except in compliance with the License. You may obtain a copy of the
 *  License at http://gridengine.sunsource.net/Gridengine_SISSL_license.html
 *
 *  Software provided under this License is provided on an "AS IS" basis,
 *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
 *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
 *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
 *  See the License for the specific provisions governing your rights and
 *  obligations concerning the Software.
 *
 *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
 *
 *  Copyright: 2003 by Sun Microsystems, Inc.
 *
 *  All Rights Reserved.
 *
 ************************************************************************/
/*___INFO__MARK_END__*/

#include "sge_c_report.h"

#include <string.h>

#include "uti/sge_time.h"
#include "sgermon.h"
#include "sge_prog.h"
#include "sge_log.h"
#include "msg_qmaster.h"
#include "sge_host.h"
#include "sge_report.h"
#include "sge_c_gdi.h"
#include "sge_host_qmaster.h"
#include "configuration_qmaster.h"
#include "sge_conf.h"
#include "qmaster_to_execd.h"
#include "job_report_qmaster.h"
#include "sge_persistence_qmaster.h"
#include "sge_answer.h"
#include "sge_lock.h"
#include "sge_event_master.h"
#include "sgeobj/sge_ack.h"
#include "sgeobj/sge_centry.h"
#include "sgeobj/sge_report.h"
#include "reschedule.h"

static int update_license_data(sge_gdi_ctx_class_t *ctx, lListElem *hep, lList *lp_lic); 


/****** sge_c_report() *******************************************************
*  NAME
*     sge_c_report() -- process execd load report
*
*  SYNOPSIS
*     void sge_c_report(char *rhost, char *commproc, int id, lList *report_list)
*
*  FUNCTION
*
*  INPUTS
*     char *rhost
*     char *commproc
*     int id
*     lList *report_list
*
*  RESULT
*     void - nothing
*
*  NOTES
*     MT-NOTE: sge_c_report() is MT safe
*
******************************************************************************/
void sge_c_report(sge_gdi_ctx_class_t *ctx, char *rhost, char *commproc, int id, lList *report_list, monitoring_t *monitor)
{
   lListElem *hep = NULL;
   u_long32 rep_type;
   lListElem *report;
   int ret = 0;
   u_long32 this_seqno, last_seqno;
   u_long32 rversion;
   sge_pack_buffer pb;   
   bool is_pb_used = false;
   bool send_tag_new_conf = false;

   DENTER(TOP_LAYER, "sge_c_report");

   if (lGetNumberOfElem(report_list) == 0) {
      DPRINTF(("received empty report\n"));
      if (rhost != NULL) {
         WARNING((SGE_EVENT, MSG_QMASTER_RECEIVED_EMPTY_LOAD_REPORT_S, rhost));
      } else {
         WARNING((SGE_EVENT, MSG_QMASTER_RECEIVED_EMPTY_LOAD_REPORT_S, "unknown"));
      }
      DRETURN_VOID;
   }

   /* accept reports only from execd's */
   if (strcmp(prognames[EXECD], commproc)) {
      ERROR((SGE_EVENT, MSG_GOTSTATUSREPORTOFUNKNOWNCOMMPROC_S, commproc));
      DRETURN_VOID;
   }

   /* do not process load reports from old execution daemons */
   rversion = lGetUlong(lFirst(report_list), REP_version);
   if (verify_request_version(NULL, rversion, rhost, commproc, id)) {
      DRETURN_VOID;
   }
   
   this_seqno = lGetUlong(lFirst(report_list), REP_seqno);

   /* need exec host for all types of reports */
   if (!(hep = host_list_locate(*object_type_get_master_list(SGE_TYPE_EXECHOST), rhost))) {
      ERROR((SGE_EVENT, MSG_GOTSTATUSREPORTOFUNKNOWNEXECHOST_S, rhost));
      DRETURN_VOID;
   }

   /* prevent old reports being proceeded 
      frequent loggings of outdated reports can be an indication 
      of too high message traffic arriving at qmaster */ 
   last_seqno = lGetUlong(hep, EH_report_seqno);

   if ((this_seqno < last_seqno && (last_seqno - this_seqno) <= 9000) &&
      !(last_seqno > 9990 && this_seqno < 10)) {
      /* this must be an old report, log and then ignore it */
      INFO((SGE_EVENT, MSG_QMASTER_RECEIVED_OLD_LOAD_REPORT_UUS, 
               sge_u32c(this_seqno), sge_u32c(last_seqno), rhost));
      DRETURN_VOID;
   }
   
   lSetUlong(hep, EH_report_seqno, this_seqno);

   /* RU: */
   /* tag all reschedule_unknown list entries we hope to 
      hear about in that job report */
   update_reschedule_unknown_list(ctx, hep);

   /*
   ** process the reports one after the other
   ** usually there will be a load report
   ** and a configuration version report
   */
   for_each(report, report_list) {
      rep_type = lGetUlong(report, REP_type);

      switch (rep_type) {
      case NUM_REP_REPORT_LOAD:
      case NUM_REP_FULL_REPORT_LOAD:
         MONITOR_ELOAD(monitor); 
         /* Now handle execds load reports */
         if (lGetUlong(hep, EH_lt_heard_from) == 0 && rep_type != NUM_REP_FULL_REPORT_LOAD) {
            host_notify_about_full_load_report(ctx, hep);
         } else {
            if (!is_pb_used) {
               is_pb_used = true;
               init_packbuffer(&pb, 1024, 0);
            }
            sge_update_load_values(ctx, rhost, lGetList(report, REP_list));

            if (mconf_get_simulate_execds()) {
               lList *master_exechost_list = *object_type_get_master_list(SGE_TYPE_EXECHOST);
               lListElem *shep;
               lListElem *simhostElem=NULL; 

               for_each(shep, master_exechost_list) {
                  simhostElem = lGetSubStr(shep, CE_name, "load_report_host", EH_consumable_config_list);
                  if (simhostElem != NULL) {
                     const char *real_host = lGetString(simhostElem, CE_stringval);
                     if (real_host != NULL && sge_hostcmp(real_host, rhost) == 0) {
                        const char* sim_host = lGetHost(shep, EH_name);
                        lListElem *clp = NULL;

                        DPRINTF(("Copy load values of %s to simulated host %s\n",
                                rhost, sim_host));

                        for_each(clp, lGetList(report, REP_list)) {
                           if (strcmp(lGetHost(clp, LR_host), SGE_GLOBAL_NAME) != 0) {
                              lSetHost(clp, LR_host, sim_host);
                           }
                        }
                        sge_update_load_values(ctx, sim_host, lGetList(report, REP_list));
                     }
                  }
               }
            }

            pack_ack(&pb, ACK_LOAD_REPORT, this_seqno, 0, NULL);
         }
         break;
      case NUM_REP_REPORT_CONF: 
         MONITOR_ECONF(monitor); 
         if (sge_compare_configuration(hep, lGetList(report, REP_list)) != 0) {
            DPRINTF(("%s: configuration on host %s is not up to date\n", SGE_FUNC, rhost));
            send_tag_new_conf = true;
         }
         break;
         
      case NUM_REP_REPORT_PROCESSORS:
         /*
         ** save number of processors
         */
         MONITOR_EPROC(monitor);
         ret = update_license_data(ctx, hep, lGetList(report, REP_list)); 
         if (ret) {
            ERROR((SGE_EVENT, MSG_LICENCE_ERRORXUPDATINGLICENSEDATA_I, ret));
         }
         break;

      case NUM_REP_REPORT_JOB:
         MONITOR_EJOB(monitor);
         if (!is_pb_used) {
            is_pb_used = true;
            init_packbuffer(&pb, 1024, 0);
         }
         process_job_report(ctx, report, hep, rhost, commproc, &pb, monitor);
         break;

      default:   
         DPRINTF(("received invalid report type %ld\n", rep_type));
      }
   } /* end for_each */

   /* RU: */
   /* delete reschedule unknown list entries we heard about */
   delete_from_reschedule_unknown_list(ctx, hep);
  
   if (is_pb_used) {
      if (pb_filled(&pb)) {
         lList *alp = NULL;
         /* send all stuff packed during processing to execd */
         sge_gdi2_send_any_request(ctx, 0, NULL, rhost, commproc, id, &pb, TAG_ACK_REQUEST, 0, &alp);
         MONITOR_MESSAGES_OUT(monitor); 
         answer_list_output(&alp);
      }
      clear_packbuffer(&pb);
   }

   if (send_tag_new_conf == true) {
      if (host_notify_about_new_conf(ctx, hep) != 0) {
         ERROR((SGE_EVENT, MSG_CONF_CANTNOTIFYEXECHOSTXOFNEWCONF_S, rhost));
      }
   }
   
   DRETURN_VOID;
} /* sge_c_report */

/*
** NAME
**   update_license_data
** PARAMETER
**   hep                 - pointer to host element, EH_Type
**   lp_lic              - list of license data, LIC_Type
**
** RETURN
**    0                  - ok
**   -1                  - NULL pointer received for hep
**   -2                  - NULL pointer received for lp_lic
** EXTERNAL
**   none
** DESCRIPTION
**   updates the number of processors in the host element
**   spools if it has changed
*/
static int update_license_data(sge_gdi_ctx_class_t *ctx, lListElem *hep, lList *lp_lic)
{
   u_long32 processors;

   DENTER(TOP_LAYER, "update_license_data");

   if (!hep) {
      DRETURN(-1);
   }

   /*
   ** if it was clear what to do in this case we could return 0
   */
   if (!lp_lic) {
      DRETURN(-2);
   }

   /*
   ** at the moment only the first element is evaluated
   */
   processors = lGetUlong(lFirst(lp_lic), LIC_processors);

   /*
   ** we spool, cf. cod_update_load_values()
   */
   if (processors != lGetUlong(hep, EH_processors)) {
      lList *answer_list = NULL;

      lSetUlong(hep, EH_processors, processors);

      DPRINTF(("%s has " sge_u32 " processors\n",
         lGetHost(hep, EH_name), processors));
      sge_event_spool(ctx,
                      &answer_list, 0, sgeE_EXECHOST_MOD, 
                      0, 0, lGetHost(hep, EH_name), NULL, NULL,
                      hep, NULL, NULL, true, true);
      answer_list_output(&answer_list);
   }

   DRETURN(0);
}