294 lines
8.8 KiB
JavaScript
294 lines
8.8 KiB
JavaScript
const _ = require("lodash");
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const axios = require("axios");
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const crypto = require("crypto");
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const dns = require("dns");
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function sleep(ms) {
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return new Promise((resolve) => {
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setTimeout(resolve, ms);
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});
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}
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function trimchar(str, ch) {
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var start = 0,
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end = str.length;
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while (start < end && str[start] === ch) ++start;
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while (end > start && str[end - 1] === ch) --end;
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return start > 0 || end < str.length ? str.substring(start, end) : str;
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}
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function md5(val) {
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return crypto.createHash("md5").update(val).digest("hex");
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}
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function crc32(val) {
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for (var a, o = [], c = 0; c < 256; c++) {
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a = c;
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for (var f = 0; f < 8; f++) a = 1 & a ? 3988292384 ^ (a >>> 1) : a >>> 1;
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o[c] = a;
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}
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for (var n = -1, t = 0; t < val.length; t++)
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n = (n >>> 8) ^ o[255 & (n ^ val.charCodeAt(t))];
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return (-1 ^ n) >>> 0;
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}
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const crctab16 = new Uint16Array([
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0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf, 0x8c48,
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0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7, 0x1081, 0x0108,
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0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e, 0x9cc9, 0x8d40, 0xbfdb,
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0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876, 0x2102, 0x308b, 0x0210, 0x1399,
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0x6726, 0x76af, 0x4434, 0x55bd, 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e,
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0xfae7, 0xc87c, 0xd9f5, 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e,
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0x54b5, 0x453c, 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd,
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0xc974, 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
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0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3, 0x5285,
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0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a, 0xdecd, 0xcf44,
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0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72, 0x6306, 0x728f, 0x4014,
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0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9, 0xef4e, 0xfec7, 0xcc5c, 0xddd5,
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0xa96a, 0xb8e3, 0x8a78, 0x9bf1, 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3,
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0x242a, 0x16b1, 0x0738, 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862,
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0x9af9, 0x8b70, 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e,
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0xf0b7, 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
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0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036, 0x18c1,
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0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e, 0xa50a, 0xb483,
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0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5, 0x2942, 0x38cb, 0x0a50,
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0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd, 0xb58b, 0xa402, 0x9699, 0x8710,
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0xf3af, 0xe226, 0xd0bd, 0xc134, 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7,
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0x6e6e, 0x5cf5, 0x4d7c, 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1,
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0xa33a, 0xb2b3, 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72,
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0x3efb, 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
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0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, 0xe70e,
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0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1, 0x6b46, 0x7acf,
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0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9, 0xf78f, 0xe606, 0xd49d,
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0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330, 0x7bc7, 0x6a4e, 0x58d5, 0x495c,
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0x3de3, 0x2c6a, 0x1ef1, 0x0f78,
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]);
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// calculate the 16-bit CRC of data with predetermined length.
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function crc16(data) {
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var res = 0x0ffff;
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for (let b of data) {
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res = ((res >> 8) & 0x0ff) ^ crctab16[(res ^ b) & 0xff];
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}
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return ~res & 0x0ffff;
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}
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function lockKeysFromRequest(call, serviceMethodName) {
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switch (serviceMethodName) {
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// controller
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case "CreateVolume":
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return ["create_volume_name_" + call.request.name];
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case "DeleteVolume":
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case "ControllerExpandVolume":
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return ["volume_id_" + call.request.volume_id];
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case "CreateSnapshot":
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return [
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"create_snapshot_name_" + call.request.name,
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"volume_id_" + call.request.source_volume_id,
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];
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case "DeleteSnapshot":
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return ["snapshot_id_" + call.request.snapshot_id];
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// node
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case "NodeStageVolume":
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case "NodeUnstageVolume":
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case "NodePublishVolume":
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case "NodeUnpublishVolume":
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case "NodeExpandVolume":
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return ["volume_id_" + call.request.volume_id];
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case "NodeGetVolumeStats":
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default:
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return [];
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}
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}
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function getLargestNumber() {
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let number;
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for (let i = 0; i < arguments.length; i++) {
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value = Number(arguments[i]);
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if (isNaN(value)) {
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continue;
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}
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if (isNaN(number)) {
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number = value;
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continue;
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}
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number = value > number ? value : number;
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}
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return number;
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}
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function stripWindowsDriveLetter(path) {
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return path.replace(/^[a-zA-Z]:/, "");
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}
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function hasWindowsDriveLetter(path) {
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return /^[a-zA-Z]:/i.test(path);
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}
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/**
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* transition function to replicate `request` style requests using axios
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*
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* @param {*} options
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* @param {*} callback
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*/
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function axios_request(options, callback = function () {}) {
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function prep_response(res) {
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res["statusCode"] = res["status"];
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delete res["status"];
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res["body"] = res["data"];
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delete res["data"];
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return res;
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}
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axios(options)
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.then((res) => {
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res = prep_response(res);
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callback(null, res, res.body);
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})
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.catch((err) => {
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if (err.response) {
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// The request was made and the server responded with a status code
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// that falls out of the range of 2xx
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let res = prep_response(err.response);
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let senderr = false;
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if (
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options.validateStatus &&
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typeof options.validateStatus == "function"
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) {
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senderr = true;
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}
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callback(senderr ? err : null, res, res.body);
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} else if (err.request) {
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// The request was made but no response was received
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// `error.request` is an instance of XMLHttpRequest in the browser and an instance of
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// http.ClientRequest in node.js
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callback(err, null, null);
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} else {
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// Something happened in setting up the request that triggered an Error
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callback(err, null, null);
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}
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});
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}
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function stringify(value) {
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const getCircularReplacer = () => {
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const seen = new WeakSet();
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return (key, value) => {
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if (typeof value === "object" && value !== null) {
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if (seen.has(value)) {
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return;
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}
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seen.add(value);
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}
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return value;
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};
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};
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return JSON.stringify(value, getCircularReplacer());
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}
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function default_supported_block_filesystems() {
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return ["btrfs", "exfat", "ext3", "ext4", "ext4dev", "ntfs", "vfat", "xfs"];
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}
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function default_supported_file_filesystems() {
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return ["nfs", "cifs"];
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}
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async function retry(retries, retriesDelay, code, options = {}) {
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let current_try = 0;
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let maxwait = _.get(options, "maxwait");
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let logerrors = _.get(options, "logerrors", false);
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let retryCondition = options.retryCondition;
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let executeStartTime;
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do {
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current_try++;
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try {
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executeStartTime = Date.now();
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return await code();
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} catch (err) {
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if (current_try >= retries) {
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throw err;
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}
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if (retryCondition) {
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let retry = retryCondition(err);
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if (!retry) {
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console.log(`retry - failed condition, not trying again`);
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//console.log(code.toString(), retryCondition.toString());
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throw err;
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}
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}
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if (logerrors === true) {
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console.log(`retry - err:`, err);
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}
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}
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// handle minExecutionTime
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if (options.minExecutionTime > 0) {
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let executionElapsedTIme = Date.now() - executeStartTime;
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let minExecutionDelayTime =
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options.minExecutionTime - executionElapsedTIme;
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if (minExecutionDelayTime > 0) {
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await sleep(minExecutionDelayTime);
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}
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}
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// handle delay
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let sleep_time = retriesDelay;
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if (_.get(options, "exponential", false) === true) {
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sleep_time = retriesDelay * current_try;
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}
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if (maxwait) {
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if (sleep_time > maxwait) {
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sleep_time = maxwait;
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}
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}
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if (sleep_time > 0) {
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console.log(`retry - waiting ${sleep_time}ms before trying again`);
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await sleep(sleep_time);
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}
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} while (true);
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}
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async function hostname_lookup(hostname) {
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return new Promise((resolve, reject) => {
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dns.lookup(hostname, function (err, result) {
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if (err) {
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return reject(err);
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}
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return resolve(result);
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});
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});
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}
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module.exports.sleep = sleep;
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module.exports.md5 = md5;
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module.exports.crc32 = crc32;
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module.exports.crc16 = crc16;
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module.exports.lockKeysFromRequest = lockKeysFromRequest;
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module.exports.getLargestNumber = getLargestNumber;
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module.exports.stringify = stringify;
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module.exports.stripWindowsDriveLetter = stripWindowsDriveLetter;
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module.exports.hasWindowsDriveLetter = hasWindowsDriveLetter;
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module.exports.axios_request = axios_request;
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module.exports.default_supported_block_filesystems =
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default_supported_block_filesystems;
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module.exports.default_supported_file_filesystems =
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default_supported_file_filesystems;
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module.exports.retry = retry;
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module.exports.trimchar = trimchar;
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module.exports.hostname_lookup = hostname_lookup;
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