From 2c4ae43e688a9873e86211ea0e7aeb9ba770dd77 Mon Sep 17 00:00:00 2001 From: Minteck Date: Tue, 18 Oct 2022 08:59:09 +0200 Subject: Update --- .../node_modules/axios/lib/helpers/speedometer.js | 55 ++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 alarm/node_modules/axios/lib/helpers/speedometer.js (limited to 'alarm/node_modules/axios/lib/helpers/speedometer.js') diff --git a/alarm/node_modules/axios/lib/helpers/speedometer.js b/alarm/node_modules/axios/lib/helpers/speedometer.js new file mode 100644 index 0000000..10782b7 --- /dev/null +++ b/alarm/node_modules/axios/lib/helpers/speedometer.js @@ -0,0 +1,55 @@ +'use strict'; + +/** + * Calculate data maxRate + * @param {Number} [samplesCount= 10] + * @param {Number} [min= 1000] + * @returns {Function} + */ +function speedometer(samplesCount, min) { + samplesCount = samplesCount || 10; + const bytes = new Array(samplesCount); + const timestamps = new Array(samplesCount); + let head = 0; + let tail = 0; + let firstSampleTS; + + min = min !== undefined ? min : 1000; + + return function push(chunkLength) { + const now = Date.now(); + + const startedAt = timestamps[tail]; + + if (!firstSampleTS) { + firstSampleTS = now; + } + + bytes[head] = chunkLength; + timestamps[head] = now; + + let i = tail; + let bytesCount = 0; + + while (i !== head) { + bytesCount += bytes[i++]; + i = i % samplesCount; + } + + head = (head + 1) % samplesCount; + + if (head === tail) { + tail = (tail + 1) % samplesCount; + } + + if (now - firstSampleTS < min) { + return; + } + + const passed = startedAt && now - startedAt; + + return passed ? Math.round(bytesCount * 1000 / passed) : undefined; + }; +} + +export default speedometer; -- cgit