froop

//現在時刻取得（yyyy/mm/dd hh:mm:ss）
function getCurrentTime() {
	var now = new Date();
	var res = "" + now.getFullYear() + "/" + padZero(now.getMonth() + 1) + 
		"/" + padZero(now.getDate()) + " " + padZero(now.getHours()) + ":" + 
		padZero(now.getMinutes()) + ":" + padZero(now.getSeconds());
	return res;
}

//先頭ゼロ付加

froop

#!/bin/bash -eu
# Docker環境構築（Amazon Linux 2用）

# locale
localectl set-locale LANG=ja_JP.UTF-8

# timezone
echo 'ZONE="Asia/Tokyo"' > /etc/sysconfig/clock
rm -f /etc/localtime
ln -fs /usr/share/zoneinfo/Asia/Tokyo /etc/localtime

froop

#!/bin/bash -eu
# Docker環境構築（Amazon Linux 2023用）

# locale
localectl set-locale LANG=ja_JP.UTF-8

# timezone
echo 'ZONE="Asia/Tokyo"' > /etc/sysconfig/clock
rm -f /etc/localtime
ln -fs /usr/share/zoneinfo/Asia/Tokyo /etc/localtime

froop

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import boto3
import time
import logging

# Constants
LOG_GROUP_NAME = '/aws/lambda/test-filter-log-events' # Log group name of CloudWatch Logs
NUM_CHARS_TO_PRINT = 10 # Number of characters to print from log message
DELAY_OF_START_MS = 5000 # Initial delay before starting the log fetching process

froop

@WebFilter(urlPatterns = { "/*" })
public class LoginFilter implements Filter {
  private static final String URL_LOGIN = "/login/";
  private static final String[] URL_EXCLUDES = {URL_LOGIN, "/common/"};
  private static final String ATTR_LOGIN = "login";
  private static final String ATTR_ORIGIN_URL = "originUrl";

  @Override
  public void doFilter(ServletRequest request, ServletResponse response,
      FilterChain chain) throws IOException, ServletException {

froop

[rsyslog] メッセージ出力のタイミングが遅延する

事象

rsyslog パッケージの omfwd モジュールにより、TCP ベースの syslog 転送 [^1] が発生した際に、ソケットから制御が戻るまでの間、他のアクションでも出力が待たされる（最大で数分）。 例えば、デフォルトの /etc/rsyslog.conf の場合、下記ファイルへの出力が遅延する。

• /var/log/messages

froop

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import socket

def send_broken_pipe():
  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  s.connect(("localhost", 8082))
  request = "POST / HTTP/1.1\r\n"
  request += "Content-Length: 123\r\n"
  request += "\r\n"

froop

public String toUniqueName(String srcName, final List<String> existing) {
  return toUniqueName(srcName, "", new NameChecker() {
    @Override
    public boolean exists(String name) {
      return existing.contains(name);
    }
  });
}

public File toUniqueFile(File file) {

froop

#!/usr/bin/env bash
for addr3 in $(seq 0 4); do
  for addr4 in $(seq 1 255); do
    ip addr add 172.32.${addr3}.${addr4}/16 dev eth0
  done
done

froop

#!/usr/bin/env python3
import socket
import datetime
now = datetime.datetime.now().strftime('%b %d %H:%M:%S')
msg = '<34>%s testhost TestTCP: aaa111' % now
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect(('127.0.0.1', 514))
sock.sendall(msg.encode('utf-8'))
sock.close()