diff options
Diffstat (limited to 'source4/dsdb/repl/drepl_periodic.c')
| -rw-r--r-- | source4/dsdb/repl/drepl_periodic.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/source4/dsdb/repl/drepl_periodic.c b/source4/dsdb/repl/drepl_periodic.c new file mode 100644 index 0000000..4cdc8cb --- /dev/null +++ b/source4/dsdb/repl/drepl_periodic.c @@ -0,0 +1,157 @@ +/* + Unix SMB/CIFS Implementation. + DSDB replication service periodic handling + + Copyright (C) Stefan Metzmacher 2007 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + +*/ + +#include "includes.h" +#include "lib/events/events.h" +#include "dsdb/samdb/samdb.h" +#include "auth/auth.h" +#include "samba/service.h" +#include "dsdb/repl/drepl_service.h" +#include <ldb_errors.h> +#include "../lib/util/dlinklist.h" +#include "librpc/gen_ndr/ndr_misc.h" +#include "librpc/gen_ndr/ndr_drsuapi.h" +#include "librpc/gen_ndr/ndr_drsblobs.h" + +#undef DBGC_CLASS +#define DBGC_CLASS DBGC_DRS_REPL + +static void dreplsrv_periodic_run(struct dreplsrv_service *service); + +static void dreplsrv_periodic_handler_te(struct tevent_context *ev, struct tevent_timer *te, + struct timeval t, void *ptr) +{ + struct dreplsrv_service *service = talloc_get_type(ptr, struct dreplsrv_service); + WERROR status; + + service->periodic.te = NULL; + + dreplsrv_periodic_run(service); + + status = dreplsrv_periodic_schedule(service, service->periodic.interval); + if (!W_ERROR_IS_OK(status)) { + task_server_terminate(service->task, win_errstr(status), false); + return; + } +} + +WERROR dreplsrv_periodic_schedule(struct dreplsrv_service *service, uint32_t next_interval) +{ + TALLOC_CTX *tmp_mem; + struct tevent_timer *new_te; + struct timeval next_time; + + /* prevent looping */ + if (next_interval == 0) next_interval = 1; + + next_time = timeval_current_ofs(next_interval, 50); + + if (service->periodic.te) { + /* + * if the timestamp of the new event is higher, + * as current next we don't need to reschedule + */ + if (timeval_compare(&next_time, &service->periodic.next_event) > 0) { + return WERR_OK; + } + } + + /* reset the next scheduled timestamp */ + service->periodic.next_event = next_time; + + new_te = tevent_add_timer(service->task->event_ctx, service, + service->periodic.next_event, + dreplsrv_periodic_handler_te, service); + W_ERROR_HAVE_NO_MEMORY(new_te); + + tmp_mem = talloc_new(service); + DEBUG(4,("dreplsrv_periodic_schedule(%u) %sscheduled for: %s\n", + next_interval, + (service->periodic.te?"re":""), + nt_time_string(tmp_mem, timeval_to_nttime(&next_time)))); + talloc_free(tmp_mem); + + talloc_free(service->periodic.te); + service->periodic.te = new_te; + + return WERR_OK; +} + +static void dreplsrv_periodic_run(struct dreplsrv_service *service) +{ + TALLOC_CTX *mem_ctx; + + DEBUG(4,("dreplsrv_periodic_run(): schedule pull replication\n")); + + /* + * KCC or some administrative tool + * might have changed Topology graph + * i.e. repsFrom/repsTo + */ + dreplsrv_refresh_partitions(service); + + mem_ctx = talloc_new(service); + dreplsrv_schedule_pull_replication(service, mem_ctx); + talloc_free(mem_ctx); + + DEBUG(4,("dreplsrv_periodic_run(): run pending_ops memory=%u\n", + (unsigned)talloc_total_blocks(service))); + + dreplsrv_ridalloc_check_rid_pool(service); + + dreplsrv_run_pending_ops(service); +} + +/* + run the next pending op, either a notify or a pull + */ +void dreplsrv_run_pending_ops(struct dreplsrv_service *s) +{ + if (!s->ops.notifies && !s->ops.pending) { + return; + } + if (!s->ops.notifies || + (s->ops.pending && + s->ops.notifies->schedule_time > s->ops.pending->schedule_time)) { + dreplsrv_run_pull_ops(s); + } else { + dreplsrv_notify_run_ops(s); + } +} + +static void dreplsrv_pending_pull_handler_im(struct tevent_context *ev, + struct tevent_immediate *im, + void *ptr) +{ + struct dreplsrv_service *service = talloc_get_type(ptr, struct dreplsrv_service); + + dreplsrv_run_pull_ops(service); +} + +void dreplsrv_pendingops_schedule_pull_now(struct dreplsrv_service *service) +{ + tevent_schedule_immediate(service->pending.im, service->task->event_ctx, + dreplsrv_pending_pull_handler_im, + service); + + return; +} + |