1 files changed, 20 insertions, 0 deletions
diff --git a/src/mongo/db/pipeline/document_source_change_stream.h b/src/mongo/db/pipeline/document_source_change_stream.h
index c831ec16c50..1b637abbd6c 100644
--- a/src/mongo/db/pipeline/document_source_change_stream.h
+++ b/src/mongo/db/pipeline/document_source_change_stream.h
@@ -29,6 +29,7 @@
 #pragma once
 
 #include "mongo/db/pipeline/document_source.h"
+#include "mongo/db/pipeline/document_source_match.h"
 #include "mongo/db/pipeline/document_source_single_document_transformation.h"
 #include "mongo/db/pipeline/document_sources_gen.h"
 
@@ -150,4 +151,23 @@ private:
     DocumentSourceChangeStream() = default;
 };
 
+/**
+ * A custom subclass of DocumentSourceMatch which does not serialize itself (since it came from an
+ * alias) and requires itself to be the first stage in the pipeline.
+ */
+class DocumentSourceOplogMatch final : public DocumentSourceMatch {
+public:
+    static boost::intrusive_ptr<DocumentSourceOplogMatch> create(
+        BSONObj filter, const boost::intrusive_ptr<ExpressionContext>& expCtx);
+
+    const char* getSourceName() const final;
+
+    StageConstraints constraints() const final;
+
+    Value serialize(boost::optional<ExplainOptions::Verbosity> explain) const final;
+
+private:
+    DocumentSourceOplogMatch(BSONObj filter, const boost::intrusive_ptr<ExpressionContext>& expCtx);
+};
+
 }  // namespace mongo