r12391: use the new periodic schedule system for the pull replication too

metze
(This used to be commit 3383568c31545a6716eb7045b56d516d507c0b4d)

1 files changed, 153 insertions, 0 deletions

diff --git a/source4/wrepl_server/wrepl_out_pull.c b/source4/wrepl_server/wrepl_out_pull.c
new file mode 100644
index 0000000000..dc2605f11b
--- /dev/null
+++ b/source4/wrepl_server/wrepl_out_pull.c
@@ -0,0 +1,153 @@
+/* 
+   Unix SMB/CIFS implementation.
+   
+   WINS Replication server
+   
+   Copyright (C) Stefan Metzmacher	2005
+   
+   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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "dlinklist.h"
+#include "lib/events/events.h"
+#include "lib/socket/socket.h"
+#include "smbd/service_task.h"
+#include "smbd/service_stream.h"
+#include "lib/messaging/irpc.h"
+#include "librpc/gen_ndr/ndr_winsrepl.h"
+#include "wrepl_server/wrepl_server.h"
+#include "nbt_server/wins/winsdb.h"
+#include "ldb/include/ldb.h"
+#include "libcli/composite/composite.h"
+#include "libcli/wrepl/winsrepl.h"
+#include "wrepl_server/wrepl_out_helpers.h"
+
+static void wreplsrv_out_pull_reschedule(struct wreplsrv_partner *partner, uint32_t interval)
+{
+	NTSTATUS status;
+
+	partner->pull.next_run = timeval_current_ofs(interval, 0);
+	status = wreplsrv_periodic_schedule(partner->service, interval);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0,("wreplsrv_periodic_schedule() failed\n"));
+	}
+}
+
+static void wreplsrv_pull_handler_creq(struct composite_context *creq)
+{
+	struct wreplsrv_partner *partner = talloc_get_type(creq->async.private_data, struct wreplsrv_partner);
+	struct wreplsrv_pull_cycle_io *old_cycle_io;
+	struct wrepl_table inform_in;
+
+	partner->pull.last_status = wreplsrv_pull_cycle_recv(partner->pull.creq);
+	partner->pull.creq = NULL;
+
+	old_cycle_io = partner->pull.cycle_io;
+	partner->pull.cycle_io = NULL;
+
+	if (NT_STATUS_IS_OK(partner->pull.last_status)) {
+		partner->pull.error_count = 0;
+		DEBUG(2,("wreplsrv_pull_cycle(%s): %s\n",
+			 partner->address, nt_errstr(partner->pull.last_status)));
+		goto done;
+	}
+
+	partner->pull.error_count++;
+
+	if (partner->pull.error_count > 1) {
+		uint32_t retry_interval;
+
+		retry_interval = partner->pull.error_count * partner->pull.retry_interval;
+		retry_interval = MIN(retry_interval, partner->pull.interval);
+
+		DEBUG(1,("wreplsrv_pull_cycle(%s): %s: error_count: %u: reschedule(%u)\n",
+			 partner->address, nt_errstr(partner->pull.last_status),
+			 partner->pull.error_count, retry_interval));
+
+		wreplsrv_out_pull_reschedule(partner, retry_interval);
+		goto done;
+	}
+
+	DEBUG(1,("wreplsrv_pull_cycle(%s): %s: error_count:%u retry\n",
+		 partner->address, nt_errstr(partner->pull.last_status),
+		 partner->pull.error_count));
+	inform_in.partner_count = old_cycle_io->in.num_owners;
+	inform_in.partners	= old_cycle_io->in.owners;
+	wreplsrv_out_partner_pull(partner, &inform_in);
+done:
+	talloc_free(old_cycle_io);
+}
+
+void wreplsrv_out_partner_pull(struct wreplsrv_partner *partner, struct wrepl_table *inform_in)
+{
+	/* there's already a pull in progress, so we're done */
+	if (partner->pull.creq) return;
+
+	partner->pull.cycle_io = talloc(partner, struct wreplsrv_pull_cycle_io);
+	if (!partner->pull.cycle_io) {
+		goto nomem;
+	}
+
+	partner->pull.cycle_io->in.partner	= partner;
+	partner->pull.cycle_io->in.wreplconn	= NULL;
+	if (inform_in) {
+		partner->pull.cycle_io->in.num_owners	= inform_in->partner_count;
+		partner->pull.cycle_io->in.owners	= inform_in->partners;
+		talloc_steal(partner->pull.cycle_io, inform_in->partners);
+	} else {
+		partner->pull.cycle_io->in.num_owners	= 0;
+		partner->pull.cycle_io->in.owners	= NULL;
+	}
+	partner->pull.creq = wreplsrv_pull_cycle_send(partner->pull.cycle_io, partner->pull.cycle_io);
+	if (!partner->pull.creq) {
+		DEBUG(1,("wreplsrv_pull_cycle_send(%s) failed\n",
+			 partner->address));
+		goto nomem;
+	}
+
+	partner->pull.creq->async.fn		= wreplsrv_pull_handler_creq;
+	partner->pull.creq->async.private_data	= partner;
+
+	return;
+nomem:
+	talloc_free(partner->pull.cycle_io);
+	partner->pull.cycle_io = NULL;
+	DEBUG(0,("wreplsrv_out_partner_pull(%s): no memory? (ignoring)\n",
+		partner->address));
+	return;
+}
+
+NTSTATUS wreplsrv_out_pull_run(struct wreplsrv_service *service)
+{
+	struct wreplsrv_partner *partner;
+
+	for (partner = service->partners; partner; partner = partner->next) {
+		/* if it's not a pull partner, go to the next partner */
+		if (!(partner->type & WINSREPL_PARTNER_PULL)) continue;
+
+		/* if pulling is disabled for the partner, go to the next one */
+		if (partner->pull.interval == 0) continue;
+
+		/* if the next timer isn't reached, go to the next partner */
+		if (!timeval_expired(&partner->pull.next_run)) continue;
+
+		wreplsrv_out_pull_reschedule(partner, partner->pull.interval);
+
+		wreplsrv_out_partner_pull(partner, NULL);
+	}
+
+	return NT_STATUS_OK;
+}