svrjs/utilities/logviewer.js

//SVR.JS LOG VIEWER

const fs = require("fs");
const readline = require("readline");

const args = process.argv;
for (
  let i =
    process.argv[0].indexOf("node") > -1 || process.argv[0].indexOf("bun") > -1
      ? 2
      : 1;
  i < args.length;
  i++
) {
  if (
    args[i] == "-h" ||
    args[i] == "--help" ||
    args[i] == "-?" ||
    args[i] == "/h" ||
    args[i] == "/?"
  ) {
    console.log("SVR.JS log viewer usage:");
    console.log("node logviewer.js [-h] [--help] [-?] [/h] [/?]");
    console.log("-h -? /h /? --help    -- Displays help");
    process.exit(0);
  } else {
    console.log("Unrecognized argument: " + args[i]);
    console.log("SVR.JS log viewer usage:");
    console.log("node logviewer.js [-h] [--help] [-?] [/h] [/?]");
    console.log("-h -? /h /? --help    -- Displays help");
    process.exit(1);
  }
}

const logo = [
  "",
  "",
  "",
  "            \x1b[38;5;002m&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&",
  "          &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&",
  "         &&&\x1b[38;5;243m(((((((((((((((((((((((((((((((((((((((((((((((((((\x1b[38;5;002m&&&",
  "         \x1b[38;5;002m&&\x1b[38;5;243m((((((\x1b[38;5;241m###########\x1b[38;5;243m(((((((((((((((((((((((\x1b[38;5;011m***\x1b[38;5;243m(\x1b[38;5;011m***\x1b[38;5;243m(\x1b[38;5;011m***\x1b[38;5;243m((\x1b[38;5;002m&&",
  "         \x1b[38;5;002m&&&\x1b[38;5;243m(((((((((((((((((((((((((((((((((((((((((((((((((((\x1b[38;5;002m&&&",
  "         \x1b[38;5;002m&&&\x1b[38;5;243m(((((((((((((((((((((((((((((((((((((((((((((((((((\x1b[38;5;002m&&&",
  "         \x1b[38;5;002m&&\x1b[38;5;243m((((((\x1b[38;5;241m###########\x1b[38;5;243m(((((((((((((((((((((((\x1b[38;5;011m***\x1b[38;5;243m(\x1b[38;5;015m   \x1b[38;5;243m(\x1b[38;5;011m***\x1b[38;5;243m((\x1b[38;5;002m&&",
  "         \x1b[38;5;002m&&&\x1b[38;5;243m(((((((((((((((((((((((((((((((((((((((((((((((((((\x1b[38;5;002m&&&",
  "         \x1b[38;5;002m&&&\x1b[38;5;243m(((((((((((((((((((((((((((((((((((((((((((((((((((\x1b[38;5;002m&&&",
  "         \x1b[38;5;002m&&\x1b[38;5;243m((((((\x1b[38;5;241m###########\x1b[38;5;243m(((((((((((((((((((((((\x1b[38;5;015m   \x1b[38;5;243m(\x1b[38;5;015m   \x1b[38;5;243m(\x1b[38;5;015m   \x1b[38;5;243m((\x1b[38;5;002m&&",
  "         \x1b[38;5;002m&&&\x1b[38;5;243m(((((((((((((((((((((((((((((((((((((((((((((((((((\x1b[38;5;002m&&&",
  "         \x1b[38;5;002m&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&",
  "         \x1b[38;5;002m&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&",
  "         \x1b[38;5;002m&&&&&&&&\x1b[38;5;010m#########################################\x1b[38;5;002m&&&&&&&&",
  "         \x1b[38;5;002m&&&&&\x1b[38;5;010m###############################################\x1b[38;5;002m&&&&&",
  "         \x1b[38;5;002m&&&\x1b[38;5;010m###################################################\x1b[38;5;002m&&&",
  "         \x1b[38;5;002m&&\x1b[38;5;010m####\x1b[38;5;016m@@@@@@\x1b[38;5;010m#\x1b[38;5;016m@@@\x1b[38;5;010m###\x1b[38;5;016m@@@\x1b[38;5;010m#\x1b[38;5;016m@@@@@@@\x1b[38;5;010m###########\x1b[38;5;016m@@\x1b[38;5;010m##\x1b[38;5;016m@@@@@@\x1b[38;5;010m####\x1b[38;5;002m&&",
  "         \x1b[38;5;002m&&\x1b[38;5;010m###\x1b[38;5;016m@@\x1b[38;5;010m#######\x1b[38;5;016m@@\x1b[38;5;010m###\x1b[38;5;016m@@\x1b[38;5;010m##\x1b[38;5;016m@@\x1b[38;5;010m####\x1b[38;5;016m@@\x1b[38;5;010m##########\x1b[38;5;016m@@\x1b[38;5;010m#\x1b[38;5;016m@@\x1b[38;5;010m#########\x1b[38;5;002m&&",
  "         \x1b[38;5;002m&&\x1b[38;5;010m######\x1b[38;5;040m#\x1b[38;5;016m@@@@\x1b[38;5;010m##\x1b[38;5;016m@@\x1b[38;5;010m#\x1b[38;5;016m@@\x1b[38;5;010m###\x1b[38;5;016m@@@@@@@\x1b[38;5;010m#######\x1b[38;5;016m@@\x1b[38;5;010m##\x1b[38;5;016m@@\x1b[38;5;010m####\x1b[38;5;040m#\x1b[38;5;016m@@@@\x1b[38;5;010m###\x1b[38;5;002m&&",
  "         \x1b[38;5;002m&&\x1b[38;5;010m###\x1b[38;5;016m@@\x1b[38;5;034m%\x1b[38;5;010m###\x1b[38;5;016m@@\x1b[38;5;010m###\x1b[38;5;016m@@@\x1b[38;5;010m####\x1b[38;5;016m@@\x1b[38;5;010m####\x1b[38;5;016m@@\x1b[38;5;010m##\x1b[38;5;016m@@\x1b[38;5;010m###\x1b[38;5;016m@@@@\x1b[38;5;010m##\x1b[38;5;016m@@\x1b[38;5;034m%\x1b[38;5;010m###\x1b[38;5;016m@@\x1b[38;5;010m###\x1b[38;5;002m&&",
  "         \x1b[38;5;002m&&\x1b[38;5;010m#####################################################\x1b[38;5;002m&&",
  "         \x1b[38;5;002m&&&\x1b[38;5;010m###################################################\x1b[38;5;002m&&&",
  "         \x1b[38;5;002m&&&&&\x1b[38;5;010m###############################################\x1b[38;5;002m&&&&&",
  "         \x1b[38;5;002m&&&&&&&&\x1b[38;5;010m#########################################\x1b[38;5;002m&&&&&&&&",
  "         \x1b[38;5;002m&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&",
  "          &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&",
  "            &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&",
  "                                  \x1b[38;5;246m///////",
  "                                  ///////",
  "                                 \x1b[38;5;208m((((/))))",
  "                                \x1b[38;5;208m(((((/)))))",
  "            \x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;246m///\x1b[38;5;247m*\x1b[38;5;246m///\x1b[38;5;247m*\x1b[38;5;246m///\x1b[38;5;247m*\x1b[38;5;246m///\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m/\x1b[38;5;208m(((((/)))))\x1b[38;5;246m//\x1b[38;5;247m*\x1b[38;5;246m///\x1b[38;5;247m*\x1b[38;5;246m///\x1b[38;5;247m*\x1b[38;5;246m///\x1b[38;5;247m*\x1b[38;5;246m///\x1b[38;5;247m*\x1b[38;5;246m/",
  "           //\x1b[38;5;247m*\x1b[38;5;246m///////\x1b[38;5;247m*\x1b[38;5;246m///////\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m/\x1b[38;5;208m(((((/)))))\x1b[38;5;246m//\x1b[38;5;247m*\x1b[38;5;246m///////\x1b[38;5;247m*\x1b[38;5;246m///////\x1b[38;5;247m*\x1b[38;5;246m//",
  "           *\x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;208m(((((/)))))\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m*\x1b[38;5;246m/\x1b[38;5;247m*",
  "                                 \x1b[38;5;208m((((/))))",
  "",
  "",
  "",
  "\x1b[0m",
];

for (let i = 0; i < logo.length; i++) {
  console.log(logo[i]);
}
console.log("Welcome to SVR.JS log viewer");

if (!fs.existsSync(__dirname + "/log")) {
  console.log("No log directory, exiting...");
  process.exit(1);
}

function prompt(options) {
  const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
    prompt: "logviewer> ",
  });
  console.log("Options:");
  for (let i = 0; i < options.length; i++) {
    console.log("[" + i + "] - " + options[i].name);
  }
  rl.prompt();
  rl.on("line", (line) => {
    const op = line.trim();
    if (op == "") {
      rl.prompt();
      return;
    }
    rl.close();
    if (options[op]) {
      options[op].callback();
    } else {
      console.log("Invalid option.");
      prompt(options);
    }
  });
}

function viewLog(log) {
  if (log[log.length - 1] == "") log.pop();
  if (log[0] == "") log.shift();
  for (let i = 0; i < log.length; i++) {
    if (log[i].indexOf("SERVER REQUEST MESSAGE") != -1) {
      log[i] =
        log[i].replace(
          "SERVER REQUEST MESSAGE",
          "\x1b[34m\x1b[1mSERVER REQUEST MESSAGE\x1b[22m",
        ) + "\x1b[37m\x1b[0m";
    } else if (log[i].indexOf("SERVER RESPONSE MESSAGE") != -1) {
      log[i] =
        log[i].replace(
          "SERVER RESPONSE MESSAGE",
          "\x1b[32m\x1b[1mSERVER RESPONSE MESSAGE\x1b[22m",
        ) + "\x1b[37m\x1b[0m";
    } else if (log[i].indexOf("SERVER RESPONSE ERROR MESSAGE") != -1) {
      log[i] =
        log[i].replace(
          "SERVER RESPONSE ERROR MESSAGE",
          "\x1b[31m\x1b[1mSERVER RESPONSE ERROR MESSAGE\x1b[22m",
        ) + "\x1b[37m\x1b[0m";
    } else if (log[i].indexOf("SERVER ERROR MESSAGE") != -1) {
      log[i] =
        log[i].replace(
          "SERVER ERROR MESSAGE",
          "\x1b[41m\x1b[1mSERVER ERROR MESSAGE\x1b[22m",
        ) + "\x1b[40m\x1b[0m";
    } else if (log[i].indexOf("SERVER WARNING MESSAGE") != -1) {
      log[i] =
        log[i].replace(
          "SERVER WARNING MESSAGE",
          "\x1b[43m\x1b[1mSERVER WARNING MESSAGE\x1b[22m",
        ) + "\x1b[40m\x1b[0m";
    } else if (log[i].indexOf("SERVER MESSAGE") != -1) {
      log[i] = log[i].replace(
        "SERVER MESSAGE",
        "\x1b[1mSERVER MESSAGE\x1b[22m",
      );
    }
    console.log(log[i]);
  }
}

function viewMasterLogs() {
  const logList = fs.readdirSync(__dirname + "/log");
  let masterLogs = [];
  for (var i = 0; i < logList.length; i++) {
    if (logList[i].match(/^master-[0-9]+\.log$/)) {
      masterLogs.push(logList[i]);
    }
  }
  if (masterLogs.length == 0) {
    console.log("No master log.");
    return;
  }
  const latestLogFileName = masterLogs.sort().reverse()[0];
  viewLog(
    fs
      .readFileSync(__dirname + "/log/" + latestLogFileName)
      .toString()
      .split("\n"),
  );
  prompt(mainOptions);
}

function viewWorkerLogs() {
  const logList = fs.readdirSync("log");
  let masterLogs = [];
  for (var i = 0; i < logList.length; i++) {
    if (logList[i].match(/^worker-[0-9]+\.log$/)) {
      masterLogs.push(logList[i]);
    }
  }
  if (masterLogs.length == 0) {
    console.log("No worker logs.");
    return;
  }
  const latestLogFileNames = masterLogs.sort().reverse().slice(0, 5).reverse();
  let log = [];
  for (let i = 0; i < latestLogFileNames.length; i++) {
    let rlog = fs
      .readFileSync("log/" + latestLogFileNames[i])
      .toString()
      .split("\n");
    if (rlog[rlog.length - 1] == "") rlog.pop();
    if (rlog[0] == "") rlog.shift();
    for (let j = 0; j < rlog.length; j++) {
      log.push(rlog[j]);
    }
  }
  log = log.sort();
  viewLog(log);
  prompt(mainOptions);
}

function viewFilteredWorkerLogs(filter) {
  const logList = fs.readdirSync("log");
  let masterLogs = [];
  for (var i = 0; i < logList.length; i++) {
    if (logList[i].match(/^worker-[0-9]+\.log$/)) {
      masterLogs.push(logList[i]);
    }
  }
  if (masterLogs.length == 0) {
    console.log("No worker logs.");
    return;
  }
  const latestLogFileNames = masterLogs.sort().reverse().slice(0, 20).reverse();
  let log = [];
  for (let i = 0; i < latestLogFileNames.length; i++) {
    let rlog = fs
      .readFileSync("log/" + latestLogFileNames[i])
      .toString()
      .split("\n");
    if (rlog[rlog.length - 1] == "") rlog.pop();
    if (rlog[0] == "") rlog.shift();
    for (let j = 0; j < rlog.length; j++) {
      if (rlog[j].indexOf(filter) != -1) log.push(rlog[j]);
    }
  }
  log = log.sort();
  viewLog(log);
  prompt(mainOptions);
}

function viewFilteredWorkerLogsPrompt() {
  var rl2 = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
    prompt: "filter> ",
  });
  console.log("Input filter:");
  rl2.prompt();
  rl2.on("line", (line) => {
    rl2.close();
    viewFilteredWorkerLogs(line);
  });
}

var mainOptions = [
  { name: "View latest master log", callback: viewMasterLogs },
  { name: "View 5 latest worker logs", callback: viewWorkerLogs },
  {
    name: "View filtered worker logs (latest 20 logs)",
    callback: viewFilteredWorkerLogsPrompt,
  },
  {
    name: "Exit log viewer",
    callback: () => {
      console.log("Bye!");
      process.exit(0);
    },
  },
];

prompt(mainOptions);