Jeremy Wall jeremywall

I've never been a fan of frameworks for Java apps that are not web servers. I have always found them lacking in features related to organizing the application's internal architecture for non-web server applications. Every year or so I look around to see if that's changed, and I've still never found anything remotely like what I want amongst the big frameworks like Spring Boot, Quarkus, Micronaut, etc. My biggest complaint is the lack of clean build up and tear down mechanisms in these frameworks. What I have been using the last few years is Guava Services (description at https://github.com/google/guava/wiki/ServiceExplained).

Guava's Services let me create a tiered layer system. For example, starting lower level services before the higher level services that are dependent on the lower services. A concrete example is a layer that creates database connection pools is started before the layer that kicks off the business logic that requires access to the database connection pool. Or a layer that starts a Kafka o

Add the following as a root level entry in the Windows Terminal settings JSON

"startupActions": "--startingDirectory \"C:\\Work\\Projects\"; split-pane --profile Ubuntu-22.04-work --startingDirectory \"\\\\wsl$\\Ubuntu-22.04-work\\home\\jeremyw\"; move-focus left"

First and foremost you need to set the CORS configuration for your bucket. I'm a Java developer so here's the code I wrote using the AWS Java SDK v2 to define the CORS configuration for my R2 bucket. Alternatively you can also edit your bucket CORS configuration using Postman following the tutorial at https://kian.org.uk/configuring-cors-on-cloudflare-r2/

// update the config section here with your information first
String bucketName = "YOUR_BUCKET";
String accessKeyId = "YOUR_R2_ACCESS_KEY_ID";
String secretAccessKey = "YOUR_R2_SECRET_ACCESS_KEY";
String accountId = "YOUR_ACCOUNT_ID";
URI uri = new URI("https://" + accountId + ".r2.cloudflarestorage.com");

	#!/bin/bash

	# use of this script means you agree to hold harmless and indemnify the author of the script
	# use at your own risk

	# usage example: update_jmv_tzdb.sh 2024a

	if [ $# -eq 0 ]; then
	echo "TZDB version argument missing"
	exit

	CORSRule corsRule1 = CORSRule.builder()
	.allowedMethods("GET","PUT", "POST")
	.allowedOrigins("*")
	.build();

	PutBucketCorsResponse putResponse = s3Client.putBucketCors(
	PutBucketCorsRequest.builder()
	.bucket(bucketName)
	.corsConfiguration(
	CORSConfiguration.builder()

	1: Create a php file on the server called tz.php (can be in your user’s home folder) and add this 1 line of code to the file: <?php echo timezone_version_get() . "\n"; ?>
	2: Now run that file with this command: php -f tz.php
	3: If it outputs something like “0.system”, that means you have the default timezone db that shipped with PHP, in other words it’s old. If it's been updated it will return the TZDB version like 2022.2. The part after the dot maps to a letter of the alphabet so 2022.2 is the 2022b TZDB release. If you see 0.system go to the INSTALL section below. If you see a TZDB release version like 2022.2 go to the UPGRADE section below.

	INSTALL

	1: We need pecl which is part of PHP’s pear package: sudo apt-get install php-pear
	2: Use pecl to install the timezonedb extension: sudo pecl install timezonedb
	3: If you get errors about "phpize not found" then run the following before re-running the previous "sudo pecl install" command: sudo apt-get install php5-dev
	4: After "pecl install timezonedb" complet

	# I recently had to try to update the TZDB of a JDK installation where I could not install lzip
	# from any registered package repository and trying to compile lzip from source was failing.
	# I discovered that as an alternative to using the tzdb-latest.tar.lz file I could just use both
	# the tzcode-latest.tar.gz and the tzdata-latest.tar.gz to generate the needed rearguard tarballs.
	# These instructions have been updated to no longer rely on lzip since it's not available out of
	# the box in many environments.

	# SHORTCUT ALERT: If you don't want to go through the whole process to build the rearguard tarball
	# or use the ziupdater tool to generate and install a tzdb.dat file you can always just download
	# the latest tar.gz and tzdb.dat files from a repo I created that automatically builds new TZDB

	look in these files

	.bashrc
	.bash_profile
	.profile

	and remove the following from each of them

	#THIS MUST BE AT THE END OF THE FILE FOR GVM TO WORK!!!
	[[ -s "/home/marco/.gvm/bin/gvm-init.sh" ]] && source "/home/marco/.gvm/bin/gvm-init.sh"

	LxRunOffline.exe duplicate -n Ubuntu-18.04 -d D:\wsl\ubuntu-18.04-xxx -N Ubuntu-18.04-XXX

	But it's not ready to use just yet. Open regedit and find the new WLS instance at Computer\HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Lxss and then set the Version field to 1.

	# Edit ~/.bashrc and add $(lsb_release -rs) in the prompt like so
	PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h/$(lsb_release -rs)\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '

	# update stuff
	sudo apt update
	sudo apt upgrade

	sudo apt install zip unzip lzip