project files added

resources/app/node_modules/pidusage/lib/bin.js

@@ -0,0 +1,48 @@
+'use strict'
+
+var spawn = require('child_process').spawn
+
+/**
+  * Spawn a binary and read its stdout.
+  * @param  {String} cmd
+  * @param  {String[]} args
+  * @param  {Function} done(err, stdout)
+  */
+function run (cmd, args, options, done) {
+  if (typeof options === 'function') {
+    done = options
+    options = undefined
+  }
+
+  var executed = false
+  var ch = spawn(cmd, args, options)
+  var stdout = ''
+  var stderr = ''
+
+  ch.stdout.on('data', function (d) {
+    stdout += d.toString()
+  })
+
+  ch.stderr.on('data', function (d) {
+    stderr += d.toString()
+  })
+
+  ch.on('error', function (err) {
+    if (executed) return
+    executed = true
+    done(new Error(err))
+  })
+
+  ch.on('close', function (code, signal) {
+    if (executed) return
+    executed = true
+
+    if (stderr) {
+      return done(new Error(stderr))
+    }
+
+    done(null, stdout, code)
+  })
+}
+
+module.exports = run

resources/app/node_modules/pidusage/lib/helpers/cpu.js

@@ -0,0 +1,87 @@
+var os = require('os')
+var fs = require('fs')
+var exec = require('child_process').exec
+var parallel = require('./parallel')
+
+/**
+ * Gathers Clock, PageSize and system uptime through /proc/uptime
+ * This method is mocked in procfile tests
+ */
+function updateCpu (cpu, next) {
+  if (cpu !== null) {
+    getRealUptime(function (err, uptime) {
+      if (err) return next(err)
+      cpu.uptime = uptime
+      next(null, cpu)
+    })
+    return
+  }
+
+  parallel([
+    getClockAndPageSize,
+    getRealUptime
+  ], function (err, data) {
+    if (err) return next(err)
+
+    cpu = {
+      clockTick: data[0].clockTick,
+      pageSize: data[0].pageSize,
+      uptime: data[1]
+    }
+
+    next(null, cpu)
+  })
+}
+
+module.exports = updateCpu
+
+/**
+ * Fallback on os.uptime(), though /proc/uptime is more precise
+ */
+function getRealUptime (next) {
+  fs.readFile('/proc/uptime', 'utf8', function (err, uptime) {
+    if (err || uptime === undefined) {
+      console.warn("[pidusage] We couldn't find uptime from /proc/uptime, using os.uptime() value")
+      return next(null, os.uptime())
+    }
+
+    return next(null, parseFloat(uptime.split(' ')[0]))
+  })
+}
+
+function getClockAndPageSize (next) {
+  parallel([
+    function getClockTick (cb) {
+      getconf('CLK_TCK', {default: 100}, cb)
+    },
+    function getPageSize (cb) {
+      getconf('PAGESIZE', {default: 4096}, cb)
+    }
+  ], function (err, data) {
+    if (err) return next(err)
+
+    next(null, {clockTick: data[0], pageSize: data[1]})
+  })
+}
+
+function getconf (keyword, options, next) {
+  if (typeof options === 'function') {
+    next = options
+    options = { default: '' }
+  }
+
+  exec('getconf ' + keyword, function (error, stdout, stderr) {
+    if (error !== null) {
+      console.error('Error while getting ' + keyword, error)
+      return next(null, options.default)
+    }
+
+    stdout = parseInt(stdout)
+
+    if (!isNaN(stdout)) {
+      return next(null, stdout)
+    }
+
+    return next(null, options.default)
+  })
+}

resources/app/node_modules/pidusage/lib/helpers/parallel.js

@@ -0,0 +1,44 @@
+// execute an array of asynchronous functions in parallel
+// @param {Array} fns - an array of functions
+// @param {Function} done - callback(err, results)
+function parallel (fns, options, done) {
+  if (typeof options === 'function') {
+    done = options
+    options = {}
+  }
+
+  var keys
+  if (!Array.isArray(fns)) { keys = Object.keys(fns) }
+  var length = keys ? keys.length : fns.length
+  var pending = length
+  var results = keys ? {} : []
+
+  function each (i, err, result) {
+    results[i] = result
+
+    if (--pending === 0 || (err && !options.graceful)) {
+      if (options.graceful && err && length > 1) {
+        err = null
+      }
+
+      done && done(err, results)
+      done = null
+    }
+  }
+
+  if (keys) {
+    keys.forEach(function (key) {
+      fns[key](function (err, res) {
+        each(key, err, res)
+      })
+    })
+  } else {
+    fns.forEach(function (fn, i) {
+      fn(function (err, res) {
+        each(i, err, res)
+      })
+    })
+  }
+}
+
+module.exports = parallel

resources/app/node_modules/pidusage/lib/history.js

@@ -0,0 +1,75 @@
+'use strict'
+var DEFAULT_MAXAGE = 60000
+
+var expiration = {}
+var history = {}
+var expireListeners = {}
+
+var size = 0
+var interval = null
+
+function get (pid, maxage) {
+  if (maxage <= 0) {
+    return
+  }
+
+  if (history[pid] !== undefined) {
+    expiration[pid] = Date.now() + (maxage || DEFAULT_MAXAGE)
+  }
+
+  return history[pid]
+}
+
+function set (pid, object, maxage, onExpire) {
+  if (object === undefined || maxage <= 0) return
+
+  expiration[pid] = Date.now() + (maxage || DEFAULT_MAXAGE)
+  if (history[pid] === undefined) {
+    size++
+    sheduleInvalidator(maxage)
+  }
+
+  history[pid] = object
+  if (onExpire) {
+    expireListeners[pid] = onExpire
+  }
+}
+
+function sheduleInvalidator (maxage) {
+  if (size > 0) {
+    if (interval === null) {
+      interval = setInterval(runInvalidator, (maxage || DEFAULT_MAXAGE) / 2)
+    }
+
+    return
+  }
+
+  if (interval !== null) {
+    clearInterval(interval)
+    interval = null
+  }
+}
+
+function runInvalidator () {
+  var now = Date.now()
+  var pids = Object.keys(expiration)
+  for (var i = 0; i < pids.length; i++) {
+    var pid = pids[i]
+    if (expiration[pid] < now) {
+      size--
+      if (expireListeners[pid]) {
+        expireListeners[pid](history[pid])
+      }
+
+      delete history[pid]
+      delete expiration[pid]
+      delete expireListeners[pid]
+    }
+  }
+  sheduleInvalidator()
+}
+
+module.exports = {
+  get: get,
+  set: set
+}

resources/app/node_modules/pidusage/lib/procfile.js

@@ -0,0 +1,141 @@
+var fs = require('fs')
+var path = require('path')
+var updateCpu = require('./helpers/cpu')
+var parallel = require('./helpers/parallel')
+var history = require('./history')
+var cpuInfo = null
+var Buffer = require('safe-buffer').Buffer
+var SIZE = 1024 // if the stat file is bigger then this I'll buy you a drink
+
+function noop () {}
+
+function open (path, history, cb) {
+  if (history.fd) { return cb(null, history.fd) }
+  fs.open(path, 'r', cb)
+}
+
+function close (history) {
+  if (history.fd) {
+    fs.close(history.fd, noop)
+  }
+}
+
+function readUntilEnd (fd, buf, cb) {
+  var firstRead = false
+  if (typeof buf === 'function') {
+    cb = buf
+    buf = Buffer.alloc(SIZE)
+    firstRead = true
+  }
+
+  fs.read(fd, buf, 0, SIZE, 0, function (err, bytesRead, buffer) {
+    if (err) {
+      cb(err)
+      return
+    }
+
+    var data = Buffer.concat([buf, buffer], firstRead ? bytesRead : buf.length + bytesRead)
+    if (bytesRead === SIZE) {
+      readUntilEnd(fd, data, cb)
+      return
+    }
+
+    cb(null, buf)
+  })
+}
+
+function readProcFile (pid, options, done) {
+  var hst = history.get(pid, options.maxage)
+  var again = false
+  if (hst === undefined) {
+    again = true
+    hst = {}
+  }
+
+  // Arguments to path.join must be strings
+  open(path.join('/proc', '' + pid, 'stat'), hst, function (err, fd) {
+    if (err) {
+      if (err.code === 'ENOENT') {
+        err.message = 'No maching pid found'
+      }
+      return done(err, null)
+    }
+
+    if (err) {
+      return done(err)
+    }
+
+    readUntilEnd(fd, function (err, buffer) {
+      if (err) {
+        return done(err)
+      }
+
+      var infos = buffer.toString('utf8')
+      var date = Date.now()
+
+      // https://github.com/arunoda/node-usage/commit/a6ca74ecb8dd452c3c00ed2bde93294d7bb75aa8
+      // preventing process space in name by removing values before last ) (pid (name) ...)
+      var index = infos.lastIndexOf(')')
+      infos = infos.substr(index + 2).split(' ')
+
+      // according to http://man7.org/linux/man-pages/man5/proc.5.html (index 0 based - 2)
+      // In kernels before Linux 2.6, start was expressed in jiffies. Since Linux 2.6, the value is expressed in clock ticks
+      var stat = {
+        ppid: parseInt(infos[1]),
+        utime: parseFloat(infos[11]),
+        stime: parseFloat(infos[12]),
+        cutime: parseFloat(infos[13]),
+        cstime: parseFloat(infos[14]),
+        start: parseFloat(infos[19]) / cpuInfo.clockTick,
+        rss: parseFloat(infos[21]),
+        uptime: cpuInfo.uptime,
+        fd: fd
+      }
+
+      var memory = stat.rss * cpuInfo.pageSize
+
+      // https://stackoverflow.com/a/16736599/3921589
+      var childrens = options.childrens ? stat.cutime + stat.cstime : 0
+      // process usage since last call in seconds
+      var total = (stat.stime - (hst.stime || 0) + stat.utime - (hst.utime || 0) + childrens) / cpuInfo.clockTick
+      // time elapsed between calls in seconds
+      var seconds = Math.abs(hst.uptime !== undefined ? stat.uptime - hst.uptime : stat.start - stat.uptime)
+      var cpu = seconds > 0 ? (total / seconds) * 100 : 0
+
+      history.set(pid, stat, options.maxage, close)
+
+      if (again) {
+        return readProcFile(pid, options, done)
+      }
+
+      return done(null, {
+        cpu: cpu,
+        memory: memory,
+        ctime: (stat.utime + stat.stime) / cpuInfo.clockTick,
+        elapsed: date - (stat.start * 1000),
+        timestamp: stat.start * 1000, // start date
+        pid: pid,
+        ppid: stat.ppid
+      })
+    })
+  })
+}
+
+function procfile (pids, options, done) {
+  updateCpu(cpuInfo, function (err, result) {
+    if (err) return done(err)
+
+    cpuInfo = result
+    var fns = {}
+
+    pids.forEach(function (pid, i) {
+      fns[pid] = function (cb) {
+        readProcFile(pid, options, cb)
+      }
+    })
+
+    parallel(fns, {graceful: true}, done)
+  })
+}
+
+module.exports = procfile

resources/app/node_modules/pidusage/lib/ps.js

@@ -0,0 +1,126 @@
+'use strict'
+
+var os = require('os')
+var bin = require('./bin')
+var history = require('./history')
+
+var PLATFORM = os.platform()
+
+function parseTime (timestr, centisec) {
+  var time = 0
+  var tpart = timestr.split(/-|:|\./)
+  var i = tpart.length - 1
+  if (i >= 0 && centisec && PLATFORM === 'darwin') {
+    time += parseInt(tpart[i--], 10) * 10
+  }
+  if (i >= 0) { // Seconds
+    time += parseInt(tpart[i--], 10) * 1000
+  }
+  if (i >= 0) { // Minutes
+    time += parseInt(tpart[i--], 10) * 60000
+  }
+  if (i >= 0) { // Hours
+    time += parseInt(tpart[i--], 10) * 3600000
+  }
+  if (i >= 0) { // Days
+    time += parseInt(tpart[i--], 10) * 86400000
+  }
+  return time
+}
+
+/**
+  * Get pid informations through ps command.
+  * @param  {Number[]} pids
+  * @param  {Object} options
+  * @param  {Function} done(err, stat)
+  */
+function ps (pids, options, done) {
+  var pArg = pids.join(',')
+  var args = ['-o', 'etime,pid,ppid,pcpu,rss,time', '-p', pArg]
+
+  if (PLATFORM === 'aix') {
+    args = ['-o', 'etime,pid,ppid,pcpu,rssize,time', '-p', pArg]
+  }
+
+  bin('ps', args, function (err, stdout, code) {
+    if (err) return done(err)
+    if (code === 1) {
+      return done(new Error('No maching pid found'))
+    }
+    if (code !== 0) {
+      return done(new Error('pidusage ps command exited with code ' + code))
+    }
+    var date = Date.now()
+
+    // Example of stdout on *nix.
+    // ELAPSED: format is [[dd-]hh:]mm:ss
+    // RSS: is counted as blocks of 1024 bytes
+    // TIME: format is [[dd-]hh:]mm:ss
+    // %CPU: goes from 0 to vcore * 100
+    //
+    // Refs: http://www.manpages.info/linux/ps.1.html
+    // NB: The columns are returned in the order given inside the -o option
+    //
+    //    ELAPSED   PID  PPID  %CPU     RSS        TIME
+    // 2-40:50:53   430     1   3.0    5145  1-02:03:04
+    //   40:50:53   432   430   0.0    2364  1-01:02:03
+    //   01:50:50   727     1  10.0  348932       14:27
+    //      00:20  7166     1   0.1    3756        0:00
+
+    // Example of stdout on Darwin
+    // ELAPSED: format is [[dd-]hh:]mm:ss
+    // RSS: is counted as blocks of 1024 bytes
+    // TIME: format is [[dd-]hh:]mm:ss.cc (cc are centiseconds)
+    // %CPU: goes from 0 to vcore * 100
+    //
+    // Refs: https://ss64.com/osx/ps.html
+    // NB: The columns are returned in the order given inside the -o option
+    //
+    //    ELAPSED   PID  PPID  %CPU     RSS           TIME
+    // 2-40:50:53   430     1   3.0    5145  1-02:03:04.07
+    //   40:50:53   432   430   0.0    2364  1-01:02:03.10
+    //   01:50:50   727     1  10.0  348932       14:27.26
+    //      00:20  7166     1   0.1    3756        0:00.02
+
+    stdout = stdout.split(os.EOL)
+
+    var statistics = {}
+    for (var i = 1; i < stdout.length; i++) {
+      var line = stdout[i].trim().split(/\s+/)
+
+      if (!line || line.length !== 6) {
+        continue
+      }
+
+      var pid = parseInt(line[1], 10)
+      var hst = history.get(pid, options.maxage)
+      if (hst === undefined) hst = {}
+
+      var ppid = parseInt(line[2], 10)
+      var memory = parseInt(line[4], 10) * 1024
+      var etime = parseTime(line[0])
+      var ctime = parseTime(line[5], true)
+
+      var total = (ctime - (hst.ctime || 0))
+      // time elapsed between calls in seconds
+      var seconds = Math.abs(hst.elapsed !== undefined ? etime - hst.elapsed : etime)
+      var cpu = seconds > 0 ? (total / seconds) * 100 : 0
+
+      statistics[pid] = {
+        cpu: cpu,
+        memory: memory,
+        ppid: ppid,
+        pid: pid,
+        ctime: ctime,
+        elapsed: etime,
+        timestamp: date
+      }
+
+      history.set(pid, statistics[pid], options.maxage)
+    }
+
+    done(null, statistics)
+  })
+}
+
+module.exports = ps

resources/app/node_modules/pidusage/lib/stats.js

@@ -0,0 +1,86 @@
+'use strict'
+
+var fs = require('fs')
+var os = require('os')
+
+var platformToMethod = {
+  aix: 'ps',
+  alpine: 'procfile',
+  darwin: 'ps',
+  freebsd: 'ps',
+  linux: 'procfile',
+  netbsd: 'procfile',
+  sunos: 'ps',
+  win: 'wmic'
+}
+
+var ps = require('./ps')
+var platform = os.platform()
+
+if (fs.existsSync('/etc/alpine-release')) {
+  platform = 'alpine'
+}
+
+if (platform.match(/^win/)) {
+  platform = 'win'
+}
+
+var stat
+try {
+  stat = require('./' + platformToMethod[platform])
+} catch (err) {}
+
+/**
+ * @callback pidCallback
+ * @param {Error} err A possible error.
+ * @param {Object} statistics The object containing the statistics.
+ */
+
+/**
+ * Get pid informations.
+ * @public
+ * @param  {Number|Number[]|String|String[]} pids A pid or a list of pids.
+ * @param  {Object} [options={}] Options object
+ * @param  {pidCallback} callback Called when the statistics are ready.
+ */
+function get (pids, options, callback) {
+  var fn = stat
+  if (platform !== 'win' && options.usePs === true) {
+    fn = ps
+  }
+
+  if (stat === undefined) {
+    return callback(new Error(os.platform() + ' is not supported yet, please open an issue (https://github.com/soyuka/pidusage)'))
+  }
+
+  var single = false
+  if (!Array.isArray(pids)) {
+    single = true
+    pids = [pids]
+  }
+
+  if (pids.length === 0) {
+    return callback(new TypeError('You must provide at least one pid'))
+  }
+
+  for (var i = 0; i < pids.length; i++) {
+    pids[i] = parseInt(pids[i], 10)
+    if (isNaN(pids[i]) || pids[i] < 0) {
+      return callback(new TypeError('One of the pids provided is invalid'))
+    }
+  }
+
+  fn(pids, options, function (err, stats) {
+    if (err) {
+      return callback(err)
+    }
+
+    if (single) {
+      callback(null, stats[pids[0]])
+    } else {
+      callback(null, stats)
+    }
+  })
+}
+
+module.exports = get

resources/app/node_modules/pidusage/lib/wmic.js

@@ -0,0 +1,130 @@
+'use strict'
+
+var os = require('os')
+var bin = require('./bin')
+var history = require('./history')
+
+function parseDate (datestr) {
+  var year = datestr.substring(0, 4)
+  var month = datestr.substring(4, 6)
+  var day = datestr.substring(6, 8)
+  var hour = datestr.substring(8, 10)
+  var minutes = datestr.substring(10, 12)
+  var seconds = datestr.substring(12, 14)
+  var useconds = datestr.substring(15, 21)
+  var sign = datestr.substring(21, 22)
+  var tmz = parseInt(datestr.substring(22, 25), 10)
+  var tmzh = Math.floor(tmz / 60)
+  var tmzm = tmz % 60
+
+  return new Date(
+    year + '-' + month + '-' + day + 'T' + hour +
+    ':' + minutes + ':' + seconds +
+    '.' + useconds +
+    sign + (tmzh > 9 ? tmzh : '0' + tmzh) + '' + (tmzm > 9 ? tmzm : '0' + tmzm)
+  )
+}
+
+/**
+  * Get pid informations through wmic command.
+  * @param  {Number[]} pids
+  * @param  {Object} options
+  * @param  {Function} done(err, stat)
+  */
+function wmic (pids, options, done) {
+  var whereClause = 'ProcessId=' + pids[0]
+  for (var i = 1; i < pids.length; i++) {
+    whereClause += ' or ' + 'ProcessId=' + pids[i]
+  }
+
+  var args = [
+    'PROCESS',
+    'where',
+    '"' + whereClause + '"',
+    'get',
+    'CreationDate,KernelModeTime,ParentProcessId,ProcessId,UserModeTime,WorkingSetSize'
+  ]
+
+  bin('wmic', args, {windowsHide: true, windowsVerbatimArguments: true}, function (err, stdout, code) {
+    if (err) {
+      if (err.message.indexOf('No Instance(s) Available.') !== -1) {
+        return done(new Error('No maching pid found'))
+      }
+      return done(err)
+    }
+    if (code !== 0) {
+      return done(new Error('pidusage wmic command exited with code ' + code))
+    }
+    var date = Date.now()
+
+    // Note: On Windows the returned value includes fractions of a second.
+    // Use Math.floor() to get whole seconds.
+    var uptime = Math.floor(os.uptime())
+
+    // Example of stdout on Windows 10
+    // CreationDate: is in the format yyyymmddHHMMSS.mmmmmmsUUU
+    // KernelModeTime: is in units of 100 ns
+    // UserModeTime: is in units of 100 ns
+    // WorkingSetSize: is in bytes
+    //
+    // Refs: https://superuser.com/a/937401/470946
+    // Refs: https://msdn.microsoft.com/en-us/library/aa394372(v=vs.85).aspx
+    // NB: The columns are returned in lexicographical order
+    //
+    // CreationDate               KernelModeTime  ParentProcessId  ProcessId  UserModeTime  WorkingSetSize
+    // 20150329221650.080654+060  153750000       0                777        8556250000    110821376
+
+    stdout = stdout.split(os.EOL)
+
+    var again = false
+    var statistics = {}
+    for (var i = 1; i < stdout.length; i++) {
+      var line = stdout[i].trim().split(/\s+/)
+
+      if (!line || line.length !== 6) {
+        continue
+      }
+
+      var creation = parseDate(line[0])
+      var ppid = parseInt(line[2], 10)
+      var pid = parseInt(line[3], 10)
+      var kerneltime = Math.round(parseInt(line[1], 10) / 10000)
+      var usertime = Math.round(parseInt(line[4], 10) / 10000)
+      var memory = parseInt(line[5], 10)
+
+      var hst = history.get(pid, options.maxage)
+      if (hst === undefined) {
+        again = true
+        hst = {ctime: kerneltime + usertime, uptime: uptime}
+      }
+
+      // process usage since last call
+      var total = (kerneltime + usertime - hst.ctime) / 1000
+      // time elapsed between calls in seconds
+      var seconds = uptime - hst.uptime
+      var cpu = seconds > 0 ? (total / seconds) * 100 : 0
+
+      history.set(pid, {ctime: usertime + kerneltime, uptime: uptime}, options.maxage)
+
+      statistics[pid] = {
+        cpu: cpu,
+        memory: memory,
+        ppid: ppid,
+        pid: pid,
+        ctime: usertime + kerneltime,
+        elapsed: date - creation.getTime(),
+        timestamp: date
+      }
+    }
+
+    if (again) {
+      return wmic(pids, options, function (err, stats) {
+        if (err) return done(err)
+        done(null, Object.assign(statistics, stats))
+      })
+    }
+    done(null, statistics)
+  })
+}
+
+module.exports = wmic