Petar Petrov petarov

Bamboo as a Systemd Service

Make Atlassian Bamboo start as a Systemd service on Linux (CentOS).

Add a new bamboo user and group as explained in the Atlassian's tutorial.

useradd --create-home -c "Bamboo role account" bamboo

Make sure the binary and home directories are owned by the new user:

Scheme

SRRR MMMM PPPP TTTT TTTT VVVV

`S scheme (0=old, 1=new)
R RAM (0=256, 1=512, 2=1024)
M manufacturer (0='SONY',1='EGOMAN',2='EMBEST',3='UNKNOWN',4='EMBEST')
P processor (0=2835, 1=2836)
T type (0='A', 1='B', 2='A+', 3='B+', 4='Pi 2 B', 5='Alpha', 6='Compute Module')

Gradle Dependency Resolution

Normal Gradle behavior

The default behavior of Gradle to pick the newest version also applies if a lower version has been declared locally, but another dependency transitively pulls in a newer version. This is in contrast with Maven, where a locally declared version will always win.

For example, if your build.gradle specifies the dependency org.springframework:spring-tx:3.2.3.RELEASE, and another dependency declares 4.0.5.RELEASE as a transitive dependency, then 4.0.5.RELEASE will take precedence:

dependencies {
    compile("org.springframework.data:spring-data-hadoop:2.0.0.RELEASE")
    compile("org.springframework:spring-tx:3.2.3.RELEASE")

// will select org.springframework:spring-tx:4.0.5.RELEASE

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

Stores data elements based on an sequential, most commonly 0 based, index.
Based on tuples from set theory.

	<?xml version="1.0" encoding="UTF-8"?>
	<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
	<plist version="1.0">
	<dict>
	<key>Label</key>
	<string>net.vexelon.petarov.name</string>
	<key>ProgramArguments</key>
	<array>
	<string>/<path>/<executable></string>
	<string>/<path>/<param></string>

	What's New in Managing Apple Devices
	https://developer.apple.com/videos/play/wwdc2022/10045/

	===
	= Notes by Matt (Tyger) Lemieux ~ Editorial remarks are my own (and marked as such) as are mistakes and errors in interpretation.
	= They are not the opinions or interpretations of Apple or my employers. Your milage may vary.
	===

	== Previous Announcement Recap ==

	import org.bouncycastle.util.encoders.Hex;

	import java.util.HexFormat;

	class Scratch {

	public static void main(String[] args) throws Exception {
	var data = new byte[] { 23, 42, 127, 31, 12, 0, -1, 109, 87, 0, -1, 0, -1, -42, -19, 96, 23, 42, 127, 31, 12,
	0, -1, 109, 87, 0, -1, 0, -1, -42, -19, 96, 23, 42, 127, 31, 12, 0, -1, 109, 87, 0, -1, 0, -1, -42, -19,
	96, 23, 42, 127, 31, 12, 0, -1, 109, 87, 0, -1, 0, -1, -42, -19, 96, 23, 42, 127, 31, 12, 0, -1, 109,

	public class OffsetDateTimeTypeHandlerJDBC42 extends BaseTypeHandler<OffsetDateTime> {

	@Override
	public void setNonNullParameter(PreparedStatement ps, int i, OffsetDateTime parameter, JdbcType jdbcType)
	throws SQLException {
	ps.setObject(i, parameter);
	}

	@Override
	public OffsetDateTime getNullableResult(ResultSet rs, String columnName) throws SQLException {

	#!/bin/bash
	# Encrypts input data using AES-CBC-128 without salt
	# Key and IV passed as text parameters and converted to OpenSSL Hex formatted inputs.
	# Outputs encrypted data as Base64 encoded text.

	if [ "$1NULL" = "NULL" ]; then
	echo "Usage - $0 [key] [iv] [data]"
	exit 1
	fi