SERVER-26638: Add `--objcheck` and `--noobjcheck` options to mongo shell.

Add flags to disable BSON validity check in client Some performance
tests are adversely affected by the BSON checking in the client.
Change default for `objcheck` to false for client.

1 files changed, 28 insertions, 0 deletions

diff --git a/src/mongo/shell/shell_options.cpp b/src/mongo/shell/shell_options.cpp
index 3a2b55da126..f4f61ee6429 100644
--- a/src/mongo/shell/shell_options.cpp
+++ b/src/mongo/shell/shell_options.cpp
@@ -80,6 +80,24 @@ Status addMongoShellOptions(moe::OptionSection* options) {
 
     options->addOptionChaining("eval", "eval", moe::String, "evaluate javascript");
 
+    options
+        ->addOptionChaining("objcheck",
+                            "objcheck",
+                            moe::Switch,
+                            "inspect client data for validity on receipt (DEFAULT)")
+        .hidden()
+        .setSources(moe::SourceAllLegacy)
+        .incompatibleWith("noobjcheck");
+
+    options
+        ->addOptionChaining("noobjcheck",
+                            "noobjcheck",
+                            moe::Switch,
+                            "do NOT inspect client data for validity on receipt")
+        .hidden()
+        .setSources(moe::SourceAllLegacy)
+        .incompatibleWith("objcheck");
+
     moe::OptionSection authenticationOptions("Authentication Options");
 
     authenticationOptions.addOptionChaining(
@@ -254,6 +272,16 @@ Status storeMongoShellOptions(const moe::Environment& params,
         logger::globalLogDomain()->setMinimumLoggedSeverity(logger::LogSeverity::Debug(1));
     }
 
+    // `objcheck` option is part of `serverGlobalParams` to avoid making common parts depend upon
+    // the client options.  The option is set to false in clients by default.
+    if (params.count("objcheck")) {
+        serverGlobalParams.objcheck = true;
+    } else if (params.count("noobjcheck")) {
+        serverGlobalParams.objcheck = false;
+    } else {
+        serverGlobalParams.objcheck = false;
+    }
+
     if (params.count("port")) {
         shellGlobalParams.port = params["port"].as<string>();
     }