SERVER-19554 merge ReplSetMetadata and ReplicationMetadata

1 files changed, 15 insertions, 0 deletions

diff --git a/src/mongo/bson/util/bson_extract.h b/src/mongo/bson/util/bson_extract.h
index fa7e3bbc9ab..c5e34d3e3ba 100644
--- a/src/mongo/bson/util/bson_extract.h
+++ b/src/mongo/bson/util/bson_extract.h
@@ -33,6 +33,7 @@
 #include "mongo/base/status.h"
 #include "mongo/base/string_data.h"
 #include "mongo/bson/bsontypes.h"
+#include "mongo/db/repl/optime.h"
 
 namespace mongo {
 
@@ -94,6 +95,20 @@ Status bsonExtractIntegerField(const BSONObj& object, StringData fieldName, long
  */
 Status bsonExtractStringField(const BSONObj& object, StringData fieldName, std::string* out);
 
+
+/**
+ * Finds an object-typed field named "fieldName" in "object" that represents an OpTime.
+ *
+ * The OpTime objects have two fields, a Timestamp ts and numeric term.
+ *
+ * Returns Status::OK() and sets *out to the found element's OpTime value on success.  Returns
+ * ErrorCodes::NoSuchKey if there are no matches for "fieldName" or either subobject field is
+ * missing, and ErrorCodes::TypeMismatch if the type of the matching element is not Object, the ts
+ * subfield is not Timestamp, or the term subfield is not numeric.  For return values other than
+ * Status::OK(), the resulting value of "*out" is undefined.
+ */
+Status bsonExtractOpTimeField(const BSONObj& object, StringData fieldName, repl::OpTime* out);
+
 /**
  * Finds an Timestamp-typed element named "fieldName" in "object" and stores its value in "out".
  *