SERVER-35893: Update $out to accept new syntax

1 files changed, 107 insertions, 0 deletions

diff --git a/src/mongo/db/pipeline/document_source_change_stream.idl b/src/mongo/db/pipeline/document_source_change_stream.idl
new file mode 100644
index 00000000000..51df24e8cda
--- /dev/null
+++ b/src/mongo/db/pipeline/document_source_change_stream.idl
@@ -0,0 +1,107 @@
+# Copyright (C) 2018 MongoDB Inc.
+#
+# This program is free software: you can redistribute it and/or  modify
+# it under the terms of the GNU Affero General Public License, version 3,
+# as published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# As a special exception, the copyright holders give permission to link the
+# code of portions of this program with the OpenSSL library under certain
+# conditions as described in each individual source file and distribute
+# linked combinations including the program with the OpenSSL library. You
+# must comply with the GNU Affero General Public License in all respects for
+# all of the code used other than as permitted herein. If you modify file(s)
+# with this exception, you may extend this exception to your version of the
+# file(s), but you are not obligated to do so. If you do not wish to do so,
+# delete this exception statement from your version. If you delete this
+# exception statement from all source files in the program, then also delete
+# it in the license file.
+
+# Document source change stream stage IDL file
+
+global:
+   cpp_namespace: "mongo"
+   cpp_includes:
+       - "mongo/db/pipeline/resume_token.h"
+
+imports:
+    - "mongo/idl/basic_types.idl"
+
+types:
+    # A resume token is an opaque document we return to the user that contains all the information
+    # needed to resume a stream where they left off.  It also provides the ordering of streams
+    # from multiple shards.
+    resumeToken:
+        bson_serialization_type: object
+        description: An object representing a resume token for a change stream
+        cpp_type: ResumeToken
+        # The IDL requires a serializer for any custom type. The serializer for this type actually
+        # needs to know which format to use though, so requires an argument which is not currently
+        # supported by the IDL. We don't expect anyone to use the IDL to serialize the type, so we
+        # just provide a dummy serializer here.
+        serializer: ResumeToken::toBSON_do_not_use
+        deserializer: ResumeToken::parse
+
+    # The document key element in a resume token can be any BSON element, so we need a custom type
+    # which leaves it as a BSONElement
+    resumeTokenDocumentKey:
+        bson_serialization_type: any
+        description: The document id contained within a resume token
+        cpp_type: Value
+        serializer: Value::serializeForIDL
+        deserializer: Value::deserializeForIDL
+
+
+structs:
+  ResumeTokenClusterTime:
+      description: The IDL type of cluster time
+      fields:
+          ts:
+            cpp_name: timestamp
+            type: timestamp
+            description: The timestamp of the logical time
+
+  DocumentSourceChangeStreamSpec:
+      description: A document used to specify the $changeStream stage of an aggregation
+                   pipeline.
+      fields:
+          resumeAfter:
+              cpp_name: resumeAfter
+              type: resumeToken
+              optional: true
+              description: An object representing the point at which we should resume reporting
+                           changes from.
+          
+          startAfter:
+              cpp_name: startAfter
+              type: resumeToken
+              optional: true
+              description: An object representing the point at which we should start reporting
+                           changes from. This is allowed to be a token from an invalidating command.
+
+          startAtOperationTime:
+              cpp_name: startAtOperationTime
+              type: timestamp
+              optional: true
+              description: The operation time after which we should start reporting changes.
+                           Only one of resumeAfter, _resumeAfterClusterTimeDeprecated, and 
+                           startAtOperationTime should be specified.
+          fullDocument:
+              cpp_name: fullDocument
+              type: string
+              default: '"default"'
+              description: A string '"updateLookup"' or '"default"', indicating whether or not we
+                           should return a full document or just changes for an update.
+          allChangesForCluster:
+              cpp_name: allChangesForCluster
+              type: bool
+              default: false
+              description: A flag indicating whether the stream should report all changes that occur
+                           on the deployment, aside from those on internal databases or collections.