[Tarantool-patches] [PATCH 7/8] [tosquash] raft: pass source instance_id to raft_process_msg()

[Vladislav Shpilevoy]

Instance ID of the sender is needed in order to

- be able to vote for him;
- be able to remember its ID as leader ID, when it is a leader.
---
 src/box/applier.cc | 9 ++++-----
 src/box/raft.c     | 3 ++-
 src/box/raft.h     | 8 ++++++--
 3 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/src/box/applier.cc b/src/box/applier.cc
index 17e3ce1ae..8de2f799b 100644
--- a/src/box/applier.cc
+++ b/src/box/applier.cc
@@ -898,7 +898,7 @@ err:
 }
 
 static int
-apply_raft_row(struct xrow_header *row)
+applier_handle_raft(struct applier *applier, struct xrow_header *row)
 {
 	assert(iproto_type_is_raft_request(row->type));
 
@@ -906,9 +906,7 @@ apply_raft_row(struct xrow_header *row)
 	struct vclock candidate_clock;
 	if (xrow_decode_raft(row, &req, &candidate_clock) != 0)
 		return -1;
-
-	raft_process_msg(&req);
-
+	raft_process_msg(&req, applier->instance_id);
 	return 0;
 }
 
@@ -1262,7 +1260,8 @@ applier_subscribe(struct applier *applier)
 		if (first_row->lsn == 0) {
 			if (unlikely(iproto_type_is_raft_request(
 							first_row->type))) {
-				if (apply_raft_row(first_row) != 0)
+				if (applier_handle_raft(applier,
+							first_row) != 0)
 					diag_raise();
 			} else {
 				applier_signal_ack(applier);
diff --git a/src/box/raft.c b/src/box/raft.c
index fd8853d6e..1acffb677 100644
--- a/src/box/raft.c
+++ b/src/box/raft.c
@@ -78,8 +78,9 @@ raft_process_recovery(const struct raft_request *req)
 }
 
 void
-raft_process_msg(const struct raft_request *req)
+raft_process_msg(const struct raft_request *req, uint32_t source)
 {
+	(void)source;
 	if (req->term > raft.term) {
 		// Update term.
 		// The logic will be similar, but the code
diff --git a/src/box/raft.h b/src/box/raft.h
index 0bf87e64b..d875707de 100644
--- a/src/box/raft.h
+++ b/src/box/raft.h
@@ -75,9 +75,13 @@ raft_is_enabled(void)
 void
 raft_process_recovery(const struct raft_request *req);
 
-/** Process a raft status message coming from the network. */
+/**
+ * Process a raft status message coming from the network.
+ * @param req Raft request.
+ * @param source Instance ID of the message sender.
+ */
 void
-raft_process_msg(const struct raft_request *req);
+raft_process_msg(const struct raft_request *req, uint32_t source);
 
 /**
  * Broadcast the changes in this instance's raft status to all
-- 
2.21.1 (Apple Git-122.3)