SERVER-31296 Update sessions, causal, and retryable in the mongo shell.

  * Removes the initialClusterTime and initialOperationTime session
    options.

  * Enables causal consistency by default when using an explicit
    session.

  * Adds a --retryWrites command line option to the mongo shell for
    enabling retryable writes in the mongo shell. The retryWrites
    options to SessionOptions is left for convenience with testing.

  * Renames setClusterTime() to advanceClusterTime(), and adds a
    corresponding advanceOperationTime() method to DriverSession.

  * Enables assigning transaction numbers for write commands where
    ordered=false.

  * Prevents the mongo shell from sending afterClusterTime or assigning
    transaction numbers when talking to a stand-alone mongod.

  * Prevents the mongo shell from assigning transaction numbers when
    using an unacknowledged (w=0) writeConcern.

  * Changes DBClientRS to re-discover the current primary of the replica
    set when it receives an error code representing "not master" in
    addition to an error message representing "not master".

  * Adds a shellPrint() pretty-printer for SessionOptions and
    DriverSession instances so they no longer print out their entire
    object definition.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/mongo/shell/shell_options.cpp b/src/mongo/shell/shell_options.cpp
index 7898fc6fa1b..f14798a2273 100644
--- a/src/mongo/shell/shell_options.cpp
+++ b/src/mongo/shell/shell_options.cpp
@@ -208,6 +208,12 @@ Status addMongoShellOptions(moe::OptionSection* options) {
                             " commands, compatibility, legacy")
         .hidden();
 
+    options->addOptionChaining(
+        "retryWrites",
+        "retryWrites",
+        moe::Switch,
+        "automatically retry write operations upon transient network errors");
+
     options
         ->addOptionChaining(
             "rpcProtocols", "rpcProtocols", moe::String, " none, opQueryOnly, opCommandOnly, all")
@@ -363,6 +369,9 @@ Status storeMongoShellOptions(const moe::Environment& params,
         }
         shellGlobalParams.readMode = mode;
     }
+    if (params.count("retryWrites")) {
+        shellGlobalParams.shouldRetryWrites = true;
+    }
     if (params.count("rpcProtocols")) {
         std::string protos = params["rpcProtocols"].as<string>();
         auto parsedRPCProtos = rpc::parseProtocolSet(protos);