[Tarantool-patches] [PATCH 09/17] recovery: recovery_new -- don't throw exception

[Cyrill Gorcunov <gorcunov@gmail.com>]

Prepare for transition to plain C.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
---
 src/box/box.cc      |  2 ++
 src/box/recovery.cc | 22 ++++++++++------------
 src/box/relay.cc    | 12 ++++++++----
 3 files changed, 20 insertions(+), 16 deletions(-)

diff --git a/src/box/box.cc b/src/box/box.cc
index 7551ca753..4371c1986 100644
--- a/src/box/box.cc
+++ b/src/box/box.cc
@@ -2224,6 +2224,8 @@ local_recovery(const struct tt_uuid *instance_uuid,
 	recovery = recovery_new(cfg_gets("wal_dir"),
 				cfg_geti("force_recovery"),
 				checkpoint_vclock);
+	if (recovery == NULL)
+		diag_raise();
 
 	/*
 	 * Make sure we report the actual recovery position
diff --git a/src/box/recovery.cc b/src/box/recovery.cc
index 24036b7c1..1c7665f87 100644
--- a/src/box/recovery.cc
+++ b/src/box/recovery.cc
@@ -77,24 +77,21 @@
 /* {{{ Initial recovery */
 
 /**
- * Throws an exception in  case of error.
+ * Returns NULL in case of error.
  */
 struct recovery *
 recovery_new(const char *wal_dirname, bool force_recovery,
 	     const struct vclock *vclock)
 {
-	struct recovery *r = (struct recovery *)
-			calloc(1, sizeof(*r));
+	struct recovery *r;
 
+	r = (struct recovery *)calloc(1, sizeof(*r));
 	if (r == NULL) {
-		tnt_raise(OutOfMemory, sizeof(*r), "malloc",
-			  "struct recovery");
+		diag_set(OutOfMemory, sizeof(*r), "calloc",
+			 "struct recovery");
+		return NULL;
 	}
 
-	auto guard = make_scoped_guard([=]{
-		free(r);
-	});
-
 	xdir_create(&r->wal_dir, wal_dirname, XLOG, &INSTANCE_UUID,
 		    &xlog_opts_default);
 	r->wal_dir.force_recovery = force_recovery;
@@ -108,12 +105,13 @@ recovery_new(const char *wal_dirname, bool force_recovery,
 	 * UUID, see replication/cluster.test for
 	 * details.
 	 */
-	xdir_check_xc(&r->wal_dir);
+	if (xdir_check(&r->wal_dir) != 0) {
+		free(r);
+		return NULL;
+	}
 
 	r->watcher = NULL;
 	rlist_create(&r->on_close_log);
-
-	guard.is_active = false;
 	return r;
 }
 
diff --git a/src/box/relay.cc b/src/box/relay.cc
index 2e17d0476..a5bcd9580 100644
--- a/src/box/relay.cc
+++ b/src/box/relay.cc
@@ -363,8 +363,10 @@ relay_final_join(int fd, uint64_t sync, struct vclock *start_vclock,
 		relay_delete(relay);
 	});
 
-	relay->r = recovery_new(cfg_gets("wal_dir"), false,
-			       start_vclock);
+	relay->r = recovery_new(cfg_gets("wal_dir"), false, start_vclock);
+	if (relay->r == NULL)
+		diag_raise();
+
 	vclock_copy(&relay->stop_vclock, stop_vclock);
 
 	int rc = cord_costart(&relay->cord, "final_join",
@@ -717,8 +719,10 @@ relay_subscribe(struct replica *replica, int fd, uint64_t sync,
 	});
 
 	vclock_copy(&relay->local_vclock_at_subscribe, &replicaset.vclock);
-	relay->r = recovery_new(cfg_gets("wal_dir"), false,
-			        replica_clock);
+	relay->r = recovery_new(cfg_gets("wal_dir"), false, replica_clock);
+	if (relay->r == NULL)
+		diag_raise();
+
 	vclock_copy(&relay->tx.vclock, replica_clock);
 	relay->version_id = replica_version_id;
 
-- 
2.20.1