New upstream version 6.0.20upstream

1 files changed, 103 insertions, 0 deletions

diff --git a/src/mongo/db/query/query_shape/query_shape.cpp b/src/mongo/db/query/query_shape/query_shape.cpp
new file mode 100644
index 00000000000..2fa0520120e
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+++ b/src/mongo/db/query/query_shape/query_shape.cpp
@@ -0,0 +1,103 @@
+/**
+ *    Copyright (C) 2023-present MongoDB, Inc.
+ *
+ *    This program is free software: you can redistribute it and/or modify
+ *    it under the terms of the Server Side Public License, version 1,
+ *    as published by MongoDB, Inc.
+ *
+ *    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
+ *    Server Side Public License for more details.
+ *
+ *    You should have received a copy of the Server Side Public License
+ *    along with this program. If not, see
+ *    <http://www.mongodb.com/licensing/server-side-public-license>.
+ *
+ *    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 Server Side 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.
+ */
+
+#include "mongo/db/query/query_shape/query_shape.h"
+
+#include "mongo/base/status.h"
+#include "mongo/crypto/sha256_block.h"
+#include "mongo/db/query/find_command_gen.h"
+#include "mongo/db/query/projection_ast_util.h"
+#include "mongo/db/query/query_request_helper.h"
+#include "mongo/db/query/query_shape/agg_cmd_shape.h"
+#include "mongo/db/query/query_shape/find_cmd_shape.h"
+#include "mongo/db/query/query_shape/query_shape_gen.h"
+#include "mongo/db/query/query_shape/shape_helpers.h"
+#include "mongo/db/query/sort_pattern.h"
+
+namespace mongo::query_shape {
+
+namespace {
+void appendCmdNs(BSONObjBuilder& bob,
+                 const NamespaceString& nss,
+                 const SerializationOptions& opts) {
+    BSONObjBuilder nsObj = bob.subobjStart("cmdNs");
+    shape_helpers::appendNamespaceShape(nsObj, nss, opts);
+    nsObj.doneFast();
+}
+}  // namespace
+
+Shape::Shape(NamespaceStringOrUUID nssOrUUID_, BSONObj collation_)
+    : nssOrUUID(nssOrUUID_), collation(std::move(collation_)) {}
+
+
+BSONObj Shape::toBson(OperationContext* opCtx, const SerializationOptions& opts) const {
+    BSONObjBuilder bob;
+    appendCmdNsOrUUID(bob, opts);
+    if (!collation.isEmpty()) {
+        // Collation is never shapified. We use find command's collation name definition, but it
+        // should be the same for all requests.
+        bob.append(FindCommandRequest::kCollationFieldName, collation);
+    }
+    appendCmdSpecificShapeComponents(bob, opCtx, opts);
+    return bob.obj();
+}
+
+size_t Shape::size() const {
+    return sizeof(Shape) + shape_helpers::optionalObjSize(collation) + specificComponents().size() +
+        extraSize();
+}
+
+QueryShapeHash Shape::sha256Hash(OperationContext* opCtx) const {
+    // The Query Shape Hash should use the representative query shape.
+    auto serialized =
+        toBson(opCtx, SerializationOptions::kRepresentativeQueryShapeSerializeOptions);
+    return SHA256Block::computeHash((const uint8_t*)serialized.sharedBuffer().get(),
+                                    serialized.objsize());
+}
+
+void Shape::appendCmdNsOrUUID(BSONObjBuilder& bob, const SerializationOptions& opts) const {
+    if (nssOrUUID.nss()) {
+        appendCmdNs(bob, *nssOrUUID.nss(), opts);
+    } else {
+        BSONObjBuilder cmdNs = bob.subobjStart("cmdNs");
+        cmdNs.append("uuid", opts.serializeIdentifier(nssOrUUID.uuid()->toString()));
+        cmdNs.append("db", opts.serializeIdentifier(nssOrUUID.db()));
+        cmdNs.doneFast();
+    }
+}
+
+void Shape::appendCmdNs(BSONObjBuilder& bob,
+                        const NamespaceString& nss,
+                        const SerializationOptions& opts) const {
+    BSONObjBuilder nsObj = bob.subobjStart("cmdNs");
+    shape_helpers::appendNamespaceShape(nsObj, nss, opts);
+    nsObj.doneFast();
+}
+
+}  // namespace mongo::query_shape