SERVER-18084 Move code out of d_state.h/.cpp

Move the ShardingState/ShardedConnectionInfo classes out of d_state and
put them in separate sources under mongo/db.

No functional changes.

1 files changed, 103 insertions, 0 deletions

diff --git a/src/mongo/db/s/sharded_connection_info.cpp b/src/mongo/db/s/sharded_connection_info.cpp
new file mode 100644
index 00000000000..e3029bd950a
--- /dev/null
+++ b/src/mongo/db/s/sharded_connection_info.cpp
@@ -0,0 +1,103 @@
+/**
+ *    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.
+ */
+
+#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kSharding
+
+#include "mongo/platform/basic.h"
+
+#include "mongo/db/s/sharded_connection_info.h"
+
+#include <boost/optional.hpp>
+
+#include "mongo/client/global_conn_pool.h"
+#include "mongo/db/client.h"
+#include "mongo/db/operation_context.h"
+#include "mongo/s/chunk_version.h"
+#include "mongo/s/client/shard_connection.h"
+#include "mongo/s/client/sharding_connection_hook.h"
+#include "mongo/util/log.h"
+
+namespace mongo {
+
+namespace {
+
+const auto clientSCI = Client::declareDecoration<boost::optional<ShardedConnectionInfo>>();
+
+}  // namespace
+
+ShardedConnectionInfo::ShardedConnectionInfo() {
+    _forceVersionOk = false;
+}
+
+ShardedConnectionInfo::~ShardedConnectionInfo() = default;
+
+ShardedConnectionInfo* ShardedConnectionInfo::get(Client* client, bool create) {
+    auto& current = clientSCI(client);
+
+    if (!current && create) {
+        LOG(1) << "entering shard mode for connection";
+        current = boost::in_place();
+    }
+
+    return current ? &current.value() : nullptr;
+}
+
+void ShardedConnectionInfo::reset(Client* client) {
+    clientSCI(client) = boost::none;
+}
+
+const ChunkVersion ShardedConnectionInfo::getVersion(const std::string& ns) const {
+    NSVersionMap::const_iterator it = _versions.find(ns);
+    if (it != _versions.end()) {
+        return it->second;
+    } else {
+        return ChunkVersion(0, 0, OID());
+    }
+}
+
+void ShardedConnectionInfo::setVersion(const std::string& ns, const ChunkVersion& version) {
+    _versions[ns] = version;
+}
+
+void ShardedConnectionInfo::addHook() {
+    static stdx::mutex lock;
+    static bool done = false;
+
+    stdx::lock_guard<stdx::mutex> lk(lock);
+    if (!done) {
+        log() << "first cluster operation detected, adding sharding hook to enable versioning "
+                 "and authentication to remote servers";
+
+        globalConnPool.addHook(new ShardingConnectionHook(false));
+        shardConnectionPool.addHook(new ShardingConnectionHook(true));
+
+        done = true;
+    }
+}
+
+}  // namespace mongo