SERVER-34751 Move StorageEngine ownership to ServiceContext from subclasses

1 files changed, 20 insertions, 1 deletions

diff --git a/src/mongo/db/service_context.h b/src/mongo/db/service_context.h
index 7ef549cac20..305a85c226f 100644
--- a/src/mongo/db/service_context.h
+++ b/src/mongo/db/service_context.h
@@ -267,9 +267,23 @@ public:
     virtual void shutdownGlobalStorageEngineCleanly() = 0;
 
     /**
+     * Sets the storage engine for this instance. May be called up to once per instance.
+     */
+    void setStorageEngine(std::unique_ptr<StorageEngine> engine);
+
+    /**
+     * Return the storage engine instance we're using.
+     */
+    StorageEngine* getStorageEngine() {
+        return _storageEngine.get();
+    }
+
+    /**
      * Return the storage engine instance we're using.
      */
-    virtual StorageEngine* getGlobalStorageEngine() = 0;
+    StorageEngine* getGlobalStorageEngine() {
+        return getStorageEngine();
+    }
 
     //
     // Global operation management.  This may not belong here and there may be too many methods
@@ -461,6 +475,11 @@ private:
     virtual std::unique_ptr<OperationContext> _newOpCtx(Client* client, unsigned opId) = 0;
 
     /**
+     * The storage engine, if any.
+     */
+    std::unique_ptr<StorageEngine> _storageEngine;
+
+    /**
      * The periodic runner.
      */
     std::unique_ptr<PeriodicRunner> _runner;