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Mission Impossible: Java

This gist is just a friendly reminder, mostly for me, about stuff that just don't work in Java. I've spent some (lots of) precious hours trying make it work,

AWT, Swing

java.awt.SystemTray with javax.swing.JPopupMenu
- While not impossible, no matter how hard you try, it will never work on all platform properly. Just stick with the default, ugly one.
Changing the font of java.awt.MenuItem

Docker volumes on Windows

Docker for Windows needs a shared drive in order to use it as a root for shared volumes for containers. I don't feel like sharing my whole C: drive, or a creating a new partition on one of my existing disk solely for this purpose.

subst

First I tried to fix this with subst DOS command, it saved me once while I wanted to delete a really deep node_modules directory, but I wanted a solution where I can move around this mounted drive on the host.

Mount a VHD

Determine whether cgroups limit the available memory

Create Dockerfile for test

FROM ubuntu:16.04

RUN apt-get update && \
    apt-get install -y openjdk-8-jdk && \
    rm -rf /var/lib/apt/list/*

Fresh Windows Checklist

Links

https://blogs.msdn.microsoft.com/commandline/2017/04/11/windows-10-creators-update-whats-new-in-bashwsl-windows-console/

Set up dev environment with docker-compose

Python container

It is mostly (like a 100%) stolen from here

FROM ubuntu:16.04

RUN apt-get update -y

Create Linux images on Windows with Packer

Prerequisites:

Windows 10 Pro
WLS, Ubuntu 16.04 (a.k.a.: Bash on Ubuntu on Windows)
Hyper-V
Packer (1.0.0, added to path)
Ansible (2.3.0, installed on WSL)
qemu-img (2.3.0, added to path)

Migrating AngularJS UI Router to Angular Router

This migration path focuses on AngularJS UI Router and Angular Router interopability,

This method not good for everyone! The main characteristics of this path is that the AngularJS and Angular apps does not share the same layout. So new components are always introduced in Angular, old components are rewritten and downgraded for AngularJS. Migration of old modules happens at once, when almost all components are updated. UI Router states cannot be reused in Angular, so every state and listener should bre rewriten to routes and event listeners or strategies for Angular Router.

	import ch.vorburger.mariadb4j.springframework.MariaDB4jSpringService;
	import org.springframework.beans.factory.annotation.Value;
	import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
	import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
	import org.springframework.boot.autoconfigure.jdbc.DataSourceProperties;
	import org.springframework.context.annotation.Bean;
	import org.springframework.context.annotation.Configuration;
	import org.springframework.context.annotation.DependsOn;
	import org.springframework.context.annotation.Lazy;
	import org.springframework.jdbc.datasource.DataSourceTransactionManager;

	FROM ubuntu:14.04

	RUN apt-get update && apt-get install -y openssh-server
	RUN mkdir /var/run/sshd
	RUN echo 'root:password' \| chpasswd
	# xenial
	RUN sed -i 's/PermitRootLogin prohibit-password/PermitRootLogin yes/' /etc/ssh/sshd_config
	# trusty
	RUN sed -i 's/PermitRootLogin without-password/PermitRootLogin yes/' /etc/ssh/sshd_config