s4:lib/tevent: rename structs
[gd/samba-autobuild/.git] / source4 / dsdb / repl / drepl_periodic.c
1 /* 
2    Unix SMB/CIFS mplementation.
3    DSDB replication service periodic handling
4    
5    Copyright (C) Stefan Metzmacher 2007
6     
7    This program is free software; you can redistribute it and/or modify
8    it under the terms of the GNU General Public License as published by
9    the Free Software Foundation; either version 3 of the License, or
10    (at your option) any later version.
11    
12    This program is distributed in the hope that it will be useful,
13    but WITHOUT ANY WARRANTY; without even the implied warranty of
14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15    GNU General Public License for more details.
16    
17    You should have received a copy of the GNU General Public License
18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
19    
20 */
21
22 #include "includes.h"
23 #include "dsdb/samdb/samdb.h"
24 #include "auth/auth.h"
25 #include "smbd/service.h"
26 #include "lib/events/events.h"
27 #include "lib/messaging/irpc.h"
28 #include "dsdb/repl/drepl_service.h"
29 #include "lib/ldb/include/ldb_errors.h"
30 #include "../lib/util/dlinklist.h"
31 #include "librpc/gen_ndr/ndr_misc.h"
32 #include "librpc/gen_ndr/ndr_drsuapi.h"
33 #include "librpc/gen_ndr/ndr_drsblobs.h"
34
35 static void dreplsrv_periodic_run(struct dreplsrv_service *service);
36
37 static void dreplsrv_periodic_handler_te(struct tevent_context *ev, struct tevent_timer *te,
38                                          struct timeval t, void *ptr)
39 {
40         struct dreplsrv_service *service = talloc_get_type(ptr, struct dreplsrv_service);
41         WERROR status;
42
43         service->periodic.te = NULL;
44
45         dreplsrv_periodic_run(service);
46
47         status = dreplsrv_periodic_schedule(service, service->periodic.interval);
48         if (!W_ERROR_IS_OK(status)) {
49                 task_server_terminate(service->task, win_errstr(status));
50                 return;
51         }
52 }
53
54 WERROR dreplsrv_periodic_schedule(struct dreplsrv_service *service, uint32_t next_interval)
55 {
56         TALLOC_CTX *tmp_mem;
57         struct tevent_timer *new_te;
58         struct timeval next_time;
59
60         /* prevent looping */
61         if (next_interval == 0) next_interval = 1;
62
63         next_time = timeval_current_ofs(next_interval, 50);
64
65         if (service->periodic.te) {
66                 /*
67                  * if the timestamp of the new event is higher,
68                  * as current next we don't need to reschedule
69                  */
70                 if (timeval_compare(&next_time, &service->periodic.next_event) > 0) {
71                         return WERR_OK;
72                 }
73         }
74
75         /* reset the next scheduled timestamp */
76         service->periodic.next_event = next_time;
77
78         new_te = event_add_timed(service->task->event_ctx, service,
79                                  service->periodic.next_event,
80                                  dreplsrv_periodic_handler_te, service);
81         W_ERROR_HAVE_NO_MEMORY(new_te);
82
83         tmp_mem = talloc_new(service);
84         DEBUG(2,("dreplsrv_periodic_schedule(%u) %sscheduled for: %s\n",
85                 next_interval,
86                 (service->periodic.te?"re":""),
87                 nt_time_string(tmp_mem, timeval_to_nttime(&next_time))));
88         talloc_free(tmp_mem);
89
90         talloc_free(service->periodic.te);
91         service->periodic.te = new_te;
92
93         return WERR_OK;
94 }
95
96 static void dreplsrv_periodic_run(struct dreplsrv_service *service)
97 {
98         TALLOC_CTX *mem_ctx;
99
100         DEBUG(2,("dreplsrv_periodic_run(): schedule pull replication\n"));
101
102         mem_ctx = talloc_new(service);
103         dreplsrv_schedule_pull_replication(service, mem_ctx);
104         talloc_free(mem_ctx);
105
106         DEBUG(2,("dreplsrv_periodic_run(): run pending_ops\n"));
107
108         dreplsrv_run_pending_ops(service);
109 }