SERVER-17286 add --readMode flag to shell

Passing '--readMode commands' to the shell will now cause it to run find using the find command,
combined with wire protocol OP_GET_MORE messages. The default readMode remains OP_QUERY style find.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/mongo/shell/shell_utils.cpp b/src/mongo/shell/shell_utils.cpp
index 77cf1103f1d..d1382a42f01 100644
--- a/src/mongo/shell/shell_utils.cpp
+++ b/src/mongo/shell/shell_utils.cpp
@@ -214,6 +214,10 @@ namespace mongo {
             return BSON("" << shellGlobalParams.writeMode);
         }
 
+        BSONObj readMode(const BSONObj&, void*) {
+            return BSON("" << shellGlobalParams.readMode);
+        }
+
         BSONObj interpreterVersion(const BSONObj& a, void* data) {
             uassert( 16453, "interpreterVersion accepts no arguments", a.nFields() == 0 );
             return BSON( "" << globalScriptEngine->getInterpreterVersionString() );
@@ -243,6 +247,7 @@ namespace mongo {
             // Need to define this method before JSFiles::utils is executed.
             scope.injectNative("_useWriteCommandsDefault", useWriteCommandsDefault);
             scope.injectNative("_writeMode", writeMode);
+            scope.injectNative("_readMode", readMode);
             scope.externalSetup();
             mongo::shell_utils::installShellUtils( scope );
             scope.execSetup(JSFiles::servers);