source4/wrepl_server/wrepl_periodic.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    WINS Replication server
   5
   6    Copyright (C) Stefan Metzmacher      2005
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "lib/events/events.h"
  24 #include "smbd/service_task.h"
  25 #include "smbd/service.h"
  26 #include "librpc/gen_ndr/winsrepl.h"
  27 #include "wrepl_server/wrepl_server.h"
  28
  29 static NTSTATUS wreplsrv_periodic_run(struct wreplsrv_service *service)
  30 {
  31         NTSTATUS status;
  32
  33         status = wreplsrv_load_partners(service);
  34         NT_STATUS_NOT_OK_RETURN(status);
  35
  36         status = wreplsrv_scavenging_run(service);
  37         NT_STATUS_NOT_OK_RETURN(status);
  38
  39         status = wreplsrv_out_pull_run(service);
  40         NT_STATUS_NOT_OK_RETURN(status);
  41
  42         status = wreplsrv_out_push_run(service);
  43         NT_STATUS_NOT_OK_RETURN(status);
  44
  45         return NT_STATUS_OK;
  46 }
  47
  48 static void wreplsrv_periodic_handler_te(struct tevent_context *ev, struct tevent_timer *te,
  49                                          struct timeval t, void *ptr)
  50 {
  51         struct wreplsrv_service *service = talloc_get_type(ptr, struct wreplsrv_service);
  52         NTSTATUS status;
  53
  54         service->periodic.te = NULL;
  55
  56         status = wreplsrv_periodic_schedule(service, service->config.periodic_interval);
  57         if (!NT_STATUS_IS_OK(status)) {
  58                 task_server_terminate(service->task, nt_errstr(status));
  59                 return;
  60         }
  61
  62         status = wreplsrv_periodic_run(service);
  63         if (!NT_STATUS_IS_OK(status)) {
  64                 DEBUG(0,("wresrv_periodic_run() failed: %s\n", nt_errstr(status)));
  65         }
  66 }
  67
  68 NTSTATUS wreplsrv_periodic_schedule(struct wreplsrv_service *service, uint32_t next_interval)
  69 {
  70         TALLOC_CTX *tmp_mem;
  71         struct tevent_timer *new_te;
  72         struct timeval next_time;
  73
  74         /* prevent looping */
  75         if (next_interval == 0) next_interval = 1;
  76
  77         next_time = timeval_current_ofs(next_interval, 5000);
  78
  79         if (service->periodic.te) {
  80                 /*
  81                  * if the timestamp of the new event is higher,
  82                  * as current next we don't need to reschedule
  83                  */
  84                 if (timeval_compare(&next_time, &service->periodic.next_event) > 0) {
  85                         return NT_STATUS_OK;
  86                 }
  87         }
  88
  89         /* reset the next scheduled timestamp */
  90         service->periodic.next_event = next_time;
  91
  92         new_te = event_add_timed(service->task->event_ctx, service,
  93                                  service->periodic.next_event,
  94                                  wreplsrv_periodic_handler_te, service);
  95         NT_STATUS_HAVE_NO_MEMORY(new_te);
  96
  97         tmp_mem = talloc_new(service);
  98         DEBUG(6,("wreplsrv_periodic_schedule(%u) %sscheduled for: %s\n",
  99                 next_interval,
 100                 (service->periodic.te?"re":""),
 101                 nt_time_string(tmp_mem, timeval_to_nttime(&next_time))));
 102         talloc_free(tmp_mem);
 103
 104         talloc_free(service->periodic.te);
 105         service->periodic.te = new_te;
 106
 107         return NT_STATUS_OK;
 108 }
 109
 110 NTSTATUS wreplsrv_setup_periodic(struct wreplsrv_service *service)
 111 {
 112         NTSTATUS status;
 113
 114         status = wreplsrv_periodic_schedule(service, 0);
 115         NT_STATUS_NOT_OK_RETURN(status);
 116
 117         return NT_STATUS_OK;
 118 }