jakzal

Nextcloud behind Cloudflare on a Raspberry PI

Prerequisites

• Raspberry Pi
• SSD
• SATA to USB 3.0 cable
• Cloudflare account

Install Raspberry Pi OS

jakzal

Examples for the "Object-oriented event sourcing" article:

https://dev.to/jakub_zalas/object-oriented-event-sourcing-2p4

All gists:

• Functional event sourcing example in Kotlin

• Deriving state from events

• Object-oriented event sourcing

jakzal

These are code examples for the “Deriving state from events” article:

https://dev.to/jakub_zalas/deriving-state-from-events-1plj

All gists:

• Functional event sourcing example in Kotlin

• Deriving state from events

• Object-oriented event sourcing

jakzal

These are code examples for the “Functional event sourcing example in Kotlin” article:

https://dev.to/jakub_zalas/functional-event-sourcing-example-in-kotlin-3245

All gists:

• Functional event sourcing example in Kotlin

• Deriving state from events

• Object-oriented event sourcing

jakzal

package com.kaffeinelabs.function;

import java.util.function.Supplier;

public class Singleton<T> implements Supplier<T> {
  private final Supplier<? extends T> factory;
  private T instance = null;

  private Singleton(final Supplier<? extends T> factory) {
    this.factory = factory;

jakzal

package com.kaffeinelabs.debezium;

import io.debezium.testing.testcontainers.DebeziumContainer;
import org.testcontainers.containers.GenericContainer;
import org.testcontainers.containers.KafkaContainer;
import org.testcontainers.containers.Network;
import org.testcontainers.containers.PostgreSQLContainer;
import org.testcontainers.lifecycle.Startable;
import org.testcontainers.utility.DockerImageName;

jakzal

OpenSearch terraform configuration for local development

Based on docker-compose.yml from OpenSearch: https://opensearch.org/samples/docker-compose.yml

How to apply?

terraform init
terraform plan
terraform apply

jakzal

ARG PYTHON_VERSION=3.10
ARG BASE_IMAGE=python:${PYTHON_VERSION}-slim
ARG MITEMP_TARGET_DIR=/mitemp2

FROM ${BASE_IMAGE} AS builder

ARG MITEMP_TARGET_DIR
ENV PATH=$MITEMP_TARGET_DIR/bin:$PATH

RUN apt-get update && apt-get install -y --no-install-recommends build-essential gcc git libglib2.0-dev && rm -rf /var/lib/apt/lists/*

jakzal

Raspberry Pi OS installation

Install Raspberry Pi OS Lite 64bit with the Raspberry Pi Imager.

Enable ssh with key authentication, change the host name, set the user password, the WiFi password. etc.

Configuration

1. Boot the Pi.

jakzal

package com.kaffeinelabs.test.extension;

import org.junit.jupiter.api.extension.AfterAllCallback;
import org.junit.jupiter.api.extension.BeforeAllCallback;
import org.junit.jupiter.api.extension.ExtensionContext;

import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.stream.Collectors;