SERVER-45807 Add change stream stage to fetch pre-image for update/replace/delete events

 create mode 100644 jstests/change_streams/lookup_pre_image.js
 create mode 100644 jstests/noPassthrough/change_stream_pre_image_lookup_whole_db_whole_cluster.js
 create mode 100644 jstests/noPassthrough/change_stream_preimages_fail_on_mongos.js
 create mode 100644 src/mongo/db/pipeline/document_source_lookup_change_pre_image.cpp
 create mode 100644 src/mongo/db/pipeline/document_source_lookup_change_pre_image.h

1 files changed, 10 insertions, 0 deletions

diff --git a/src/mongo/shell/mongo.js b/src/mongo/shell/mongo.js
index 481aff7c6ad..2503a989d74 100644
--- a/src/mongo/shell/mongo.js
+++ b/src/mongo/shell/mongo.js
@@ -633,6 +633,16 @@ Mongo.prototype._extractChangeStreamOptions = function(options) {
         delete options.startAtOperationTime;
     }
 
+    if (options.hasOwnProperty("fullDocumentBeforeChange")) {
+        changeStreamOptions.fullDocumentBeforeChange = options.fullDocumentBeforeChange;
+        delete options.fullDocumentBeforeChange;
+    }
+
+    if (options.hasOwnProperty("allChangesForCluster")) {
+        changeStreamOptions.allChangesForCluster = options.allChangesForCluster;
+        delete options.allChangesForCluster;
+    }
+
     return [{$changeStream: changeStreamOptions}, options];
 };