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path: root/src/mongo/db/query/find_request_shapifier.cpp
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/**
 *    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/find_request_shapifier.h"

#include "mongo/db/query/projection_ast_util.h"
#include "mongo/db/query/projection_parser.h"
#include "mongo/db/query/query_request_helper.h"
#include "mongo/db/query/query_shape.h"

namespace mongo::telemetry {
BSONObj FindRequestShapifier::makeTelemetryKey(const SerializationOptions& opts,
                                               OperationContext* opCtx) const {
    auto expCtx = make_intrusive<ExpressionContext>(
        opCtx, _request, nullptr /* collator doesn't matter here.*/, false /* mayDbProfile */);
    expCtx->maxFeatureCompatibilityVersion = boost::none;  // Ensure all features are allowed.
    // Expression counters are reported in serverStatus to indicate how often clients use certain
    // expressions/stages, so it's a side effect tied to parsing. We must stop expression counters
    // before re-parsing to avoid adding to the counters more than once per a given query.
    expCtx->stopExpressionCounters();
    return makeTelemetryKey(opts, expCtx);
}

BSONObj FindRequestShapifier::makeTelemetryKey(
    const SerializationOptions& opts, const boost::intrusive_ptr<ExpressionContext>& expCtx) const {
    BSONObjBuilder bob;

    bob.append("queryShape", query_shape::extractQueryShape(_request, opts, expCtx));

    if (auto optObj = _request.getReadConcern()) {
        // Read concern should not be considered a literal.
        bob.append(FindCommandRequest::kReadConcernFieldName, optObj.get());
    }

    if (_applicationName.has_value()) {
        // TODO SERVER-76143 don't serialize appName
        bob.append("applicationName", opts.serializeIdentifier(_applicationName.value()));
    }

    return bob.obj();
}
}  // namespace mongo::telemetry