Update upstream source from tag 'upstream/6.0.0'master

Update to upstream version '6.0.0'
with Debian dir 5604a80ec1c96ca76f25f40d78e6ef855abec322

1 files changed, 0 insertions, 96 deletions

diff --git a/src/mongo/db/query/query_stats/rate_limiting.cpp b/src/mongo/db/query/query_stats/rate_limiting.cpp
deleted file mode 100644
index aa8ca645bf1..00000000000
--- a/src/mongo/db/query/query_stats/rate_limiting.cpp
+++ /dev/null
@@ -1,96 +0,0 @@
-/**
- *    Copyright (C) 2022-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 "rate_limiting.h"
-#include "mongo/stdx/mutex.h"
-#include "mongo/util/clock_source.h"
-
-namespace mongo {
-RateLimiting::RateLimiting(RequestCount samplingRate,
-                           Milliseconds timePeriod,
-                           ClockSource* clockSource)
-    : _clockSource(clockSource != nullptr ? clockSource : SystemClockSource::get()),
-      _samplingRate(samplingRate),
-      _timePeriod(timePeriod),
-      _windowStart(_clockSource->now()),
-      _prevCount(0),
-      _currentCount(0) {}
-
-Date_t RateLimiting::tickWindow() {
-    Date_t currentTime = _clockSource->now();
-
-    // Elapsed time since window start exceeds the time period. Start a new window.
-    if (currentTime - _windowStart > _timePeriod) {
-        _windowStart = currentTime;
-        _prevCount = _currentCount;
-        _currentCount = 0;
-    }
-    return currentTime;
-}
-
-bool RateLimiting::handleRequestFixedWindow() {
-    stdx::unique_lock windowLock{_windowMutex};
-    tickWindow();
-
-    if (_currentCount < _samplingRate.load()) {
-        _currentCount += 1;
-        return true;
-    }
-    return false;
-}
-
-bool RateLimiting::handleRequestSlidingWindow() {
-    stdx::unique_lock windowLock{_windowMutex};
-
-    Date_t currentTime = tickWindow();
-    auto windowStart = _windowStart;
-    auto prevCount = _prevCount;
-
-    // Sliding window is implemented over fixed size time periods/blocks as follows. Instead of
-    // making the decision to limit the rate using only the current time period, we look to the rate
-    // of the previous period to predicate the rate of the current. This smooths the "sampling" of
-    // the events by predicting a constant rate and limiting accordingly.
-
-    // Percentage of time remaining in current window.
-    double percentRemainingOfCurrentWindow =
-        ((double)(_timePeriod.count() - (currentTime - windowStart).count())) / _timePeriod.count();
-    // Estimate the number of requests remaining in the current period. We assume the requests in
-    // the previous time block occurred at a constant rate. We multiply the total number of requests
-    // in the previous period by the percentage of time remaining in the current period.
-    double estimatedRemaining = prevCount * percentRemainingOfCurrentWindow;
-    // Add this estimate to the requests we know have taken place within the current time block.
-    double estimatedCount = _currentCount + estimatedRemaining;
-
-    if (estimatedCount < _samplingRate.load()) {
-        _currentCount += 1;
-        return true;
-    }
-    return false;
-}
-}  // namespace mongo