SERVER-18418 Remote command targeter

This change introduces a remote command targeter interface to be used as a
stub to start implementing the targeting logic.

1 files changed, 50 insertions, 0 deletions

diff --git a/src/mongo/client/remote_command_targeter_standalone.h b/src/mongo/client/remote_command_targeter_standalone.h
new file mode 100644
index 00000000000..fbfc0b47e62
--- /dev/null
+++ b/src/mongo/client/remote_command_targeter_standalone.h
@@ -0,0 +1,50 @@
+/**
+ *    Copyright (C) 2015 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.
+ */
+
+#pragma once
+
+#include "mongo/client/remote_command_targeter.h"
+#include "mongo/util/net/hostandport.h"
+
+namespace mongo {
+
+    /**
+     * Implements a standalone instance remote command targeter, which always returns the same
+     * host regardless of the read preferences.
+     */
+    class RemoteCommandTargeterStandalone : public RemoteCommandTargeter {
+    public:
+        explicit RemoteCommandTargeterStandalone(const HostAndPort& hostAndPort);
+
+        StatusWith<HostAndPort> findHost(const ReadPreferenceSetting& readPref) final;
+
+    private:
+        const HostAndPort _hostAndPort;
+    };
+
+} // namespace mongo