gradle build time tool

gradle_build_time_tool.js

const fs = require('fs')

// update this to match your computer
let directory="//Users/daniellevass/.gradle/daemon/"

fs.writeFile('output.csv', '', function(){})
var outputFile = fs.createWriteStream('output.csv')

function readVersionFolders(directory) {
  fs.readdirSync(`${directory}/`).forEach(file => {
    if (! file.includes(".DS_")) {
      readFolder(file)
    }
  });
}

function readFolder(version) {
  fs.readdirSync(`${directory}/${version}/`).forEach(file => {
    if (file.endsWith(".out.log")) {
      console.log('processing :' + file);
      readFile(`${directory}/${version}/${file}`, version)
    }
  });

}

function readFile(filename, version) {
  try {
    const data = fs.readFileSync(filename, 'utf8')
    processData(data, version)
  } catch (err) {
    console.error(err)
  }
}

function processData(data, version) {
  // e.g.
  // BUILD FAILED in 30s
  // BUILD SUCCESSFUL in 1m 0s
  // 2022-02-07T11:28:18.587+0000
  let dateLength = "2022-02-07"
  let timeLength = "11:28:18"

  let lines = data.split("\n")
  var date = ""
  var time = ""

  for (let i = 0; i < lines.length; i++) {
      let line = lines[i]

      // grab a timestamp
      if(line.startsWith("202")) {
        date = line.substring(0, dateLength.length)
        timestamp = line.substring(dateLength.length +1,  dateLength.length +1 + timeLength.length)

      } else if (line.includes("BUILD FAILED")) {
        let parts = line.split(" in ")
        let time = convertStringTimeToSeconds(parts[1])
        writeToFile(version, date, timestamp, "FAILED", time)

      } else if (line.includes("BUILD SUCCESSFUL")) {
        let parts = line.split(" in ")
        let time = convertStringTimeToSeconds(parts[1])
        writeToFile(version, date, timestamp, "SUCCESSFUL", time)
      }
  }
}

function convertStringTimeToSeconds(time) {
  // e.g. 1m 39s == 99
  // e.g. 29s
  // e.g. 942ms

  // trying to debug ms is hard - let's just round up to 1s
  if (time.includes("ms")) {
    return 1
  }

  //split by space char
  let parts = time.split(" ")

  var mins = 0
  var seconds = 0

  // has a m and s
  if (parts.length == 2) {
    mins = parseInt(parts[0].substring(0, parts[0].length -1))
    seconds = parseInt(parts[1].substring(0, parts[1].length -1))
  } else if (parts.length == 1) {
    // only has an s, we can put the mins to 0
    mins = 0
    seconds = parseInt(parts[0].substring(0, parts[0].length -1))
  }


  let totalSeconds = (mins * 60) + seconds
  return totalSeconds
}

function writeToFile(version, date, time, status, seconds) {
  outputFile.write(`\n${version},${date},${time},${status},${seconds}`)
}


readVersionFolders(directory)