SERVER-22913 create SyncSourceResolver

1 files changed, 58 insertions, 0 deletions

diff --git a/src/mongo/db/repl/sync_source_resolver.cpp b/src/mongo/db/repl/sync_source_resolver.cpp
new file mode 100644
index 00000000000..0d33207f74a
--- /dev/null
+++ b/src/mongo/db/repl/sync_source_resolver.cpp
@@ -0,0 +1,58 @@
+/**
+ *    Copyright 2016 MongoDB Inc.
+ *
+ *    This program is free software: you can redistribute it and/or  modify
+ *    it under the terms of the GNU Affero General Public License, version 3,
+ *    as published by the Free Software Foundation.
+ *
+ *    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 Affero General Public License for more details.
+ *
+ *    You should have received a copy of the GNU Affero General Public License
+ *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *    As a special exception, the copyright holders give permission to link the
+ *    code of portions of this program with the OpenSSL library under certain
+ *    conditions as described in each individual source file and distribute
+ *    linked combinations including the program with the OpenSSL library. You
+ *    must comply with the GNU Affero General Public License in all respects for
+ *    all of the code used other than as permitted herein. If you modify file(s)
+ *    with this exception, you may extend this exception to your version of the
+ *    file(s), but you are not obligated to do so. If you do not wish to do so,
+ *    delete this exception statement from your version. If you delete this
+ *    exception statement from all source files in the program, then also delete
+ *    it in the license file.
+ */
+
+#include "mongo/platform/basic.h"
+
+#include "mongo/db/repl/sync_source_resolver.h"
+
+#include "mongo/db/repl/replication_coordinator.h"
+
+namespace mongo {
+namespace repl {
+
+SyncSourceResolverResponse SyncSourceResolver::findSyncSource(OperationContext* txn,
+                                                              const OpTime& lastOpTimeFetched) {
+    SyncSourceResolverResponse resp;
+    stdx::unique_lock<stdx::mutex> lock(_mutex);
+
+    resp = _replCoord->selectSyncSource(txn, lastOpTimeFetched);
+    if (resp.isOK()) {
+        // Store the syncSource for future use.
+        _syncSource = resp.getSyncSource();
+    }
+
+    return resp;
+}
+
+HostAndPort SyncSourceResolver::getActiveSyncSource() {
+    stdx::unique_lock<stdx::mutex> lock(_mutex);
+    return _syncSource;
+}
+
+}  // namespace repl
+}  // namespace mongo