SERVER-3181 Add nameOnly option to listDatabases

(cherry picked from commit fff6d490ce43a6d3952cf2352f81c524b20e6f49)

1 files changed, 10 insertions, 3 deletions

diff --git a/src/mongo/s/commands/cluster_list_databases_cmd.cpp b/src/mongo/s/commands/cluster_list_databases_cmd.cpp
index 2ae555e8593..82d519b52bb 100644
--- a/src/mongo/s/commands/cluster_list_databases_cmd.cpp
+++ b/src/mongo/s/commands/cluster_list_databases_cmd.cpp
@@ -89,6 +89,8 @@ public:
                      int options,
                      std::string& errmsg,
                      BSONObjBuilder& result) {
+        const bool nameOnly = cmdObj["nameOnly"].trueValue();
+
         map<string, long long> sizes;
         map<string, unique_ptr<BSONObjBuilder>> dbShardInfo;
 
@@ -154,9 +156,11 @@ public:
 
             BSONObjBuilder temp;
             temp.append("name", name);
-            temp.appendNumber("sizeOnDisk", size);
-            temp.appendBool("empty", size == 1);
-            temp.append("shards", dbShardInfo[name]->obj());
+            if (!nameOnly) {
+                temp.appendNumber("sizeOnDisk", size);
+                temp.appendBool("empty", size == 1);
+                temp.append("shards", dbShardInfo[name]->obj());
+            }
 
             dbListBuilder.append(temp.obj());
         }
@@ -171,6 +175,9 @@ public:
 
         dbListBuilder.done();
 
+        if (nameOnly)
+            return true;
+
         // Compute the combined total size based on the response we've built so far.
         long long totalSize = 0;
         for (auto&& dbElt : result.asTempObj()["databases"].Obj()) {