Initial Commit

Author: hyagli

.editorconfig

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+# This is the top-most .editorconfig file (do not search in parent directories)
+root = true
+
+### All files
+[*]
+charset = utf-8
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
+end_of_line = lf

README.md

@@ -1 +1,43 @@
-cdc-python-netcore
+Debezium is an open source project for change data capture (CDC).
+This example has two components to demonstrate the utilities.
+- A Django application with a MySQL database that saves data.
+- A .NET Core application with a PostgreSQL database that consumes this data.
+
+Debezium
+
+Requirements
+Just docker
+
+
+Create your Django app:
+
+    docker-compose run --rm --no-deps web django-admin startproject django_cdc .
+
+Modify src/django_cdc/settings.py
+
+    DATABASES = {
+        'default': {
+            'ENGINE': 'django.db.backends.mysql',
+            'NAME': 'djangodb',
+            'USER': 'django',
+            'PASSWORD': 'django',
+            'HOST': 'mysql',
+            'PORT': 3306,
+        }
+    }
+
+Run:
+
+    docker-compose up -d
+
+Run for default django tables:
+
+    docker-compose run --rm --no-deps web python manage.py migrate
+    docker-compose run --rm --no-deps web python manage.py makemigrations polls
+    docker-compose run --rm --no-deps web python manage.py migrate polls
+
+Add some polls from admin page
+
+    docker-compose run --rm --no-deps web python manage.py createsuperuser
+
+The default login and password for the admin site is admin:admin.

django-mysql/Dockerfile

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+FROM python:3.8
+ENV PYTHONUNBUFFERED 1
+WORKDIR /app
+COPY ./src /app
+RUN pip install -r requirements.txt

django-mysql/docker-compose.yml

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+version: '3.7'
+services:
+  mysql:
+    image: mysql:8.0
+    command: --default-authentication-plugin=mysql_native_password
+    environment:
+      MYSQL_ROOT_PASSWORD: pass
+      MYSQL_USER: django
+      MYSQL_PASSWORD: django
+      MYSQL_DATABASE: djangodb
+  adminer:
+    image: adminer:latest
+    environment:
+      ADMINER_DEFAULT_SERVER: mysql
+      ADMINER_DEFAULT_DB_NAME: djangodb
+    ports:
+      - 8080:8080
+  web:
+    build: .
+    command: python manage.py runserver 0.0.0.0:8000
+    volumes:
+      - ./src:/app
+    ports:
+      - "8000:8000"
+    depends_on:
+      - mysql

django-mysql/src/manage.py

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+#!/usr/bin/env python
+"""Django's command-line utility for administrative tasks."""
+import os
+import sys
+
+
+def main():
+    """Run administrative tasks."""
+    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'mysite.settings')
+    try:
+        from django.core.management import execute_from_command_line
+    except ImportError as exc:
+        raise ImportError(
+            "Couldn't import Django. Are you sure it's installed and "
+            "available on your PYTHONPATH environment variable? Did you "
+            "forget to activate a virtual environment?"
+        ) from exc
+    execute_from_command_line(sys.argv)
+
+
+if __name__ == '__main__':
+    main()

django-mysql/src/mysite/__init__.py

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+"""
+Django settings for mysite project.
+
+Generated by 'django-admin startproject' using Django 1.11.2.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/1.11/topics/settings/
+
+For the full list of settings and their values, see
+https://docs.djangoproject.com/en/1.11/ref/settings/
+"""
+
+import os
+
+# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
+BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+
+
+# Quick-start development settings - unsuitable for production
+# See https://docs.djangoproject.com/en/1.11/howto/deployment/checklist/
+
+# SECURITY WARNING: keep the secret key used in production secret!
+SECRET_KEY = 'noiujayeuck+=apj3e)q(d7f-!)tvvuysa80+#v))-*hmm&%1m'
+
+# SECURITY WARNING: don't run with debug turned on in production!
+DEBUG = True
+
+ALLOWED_HOSTS = []
+
+
+# Application definition
+
+INSTALLED_APPS = [
+    'polls.apps.PollsConfig',
+    'django.contrib.admin',
+    'django.contrib.auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
+]
+
+MIDDLEWARE = [
+    'django.middleware.security.SecurityMiddleware',
+    'django.contrib.sessions.middleware.SessionMiddleware',
+    'django.middleware.common.CommonMiddleware',
+    'django.middleware.csrf.CsrfViewMiddleware',
+    'django.contrib.auth.middleware.AuthenticationMiddleware',
+    'django.contrib.messages.middleware.MessageMiddleware',
+    'django.middleware.clickjacking.XFrameOptionsMiddleware',
+]
+
+ROOT_URLCONF = 'mysite.urls'
+
+TEMPLATES = [
+    {
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
+        'DIRS': [os.path.join(BASE_DIR, 'templates')],
+        'APP_DIRS': True,
+        'OPTIONS': {
+            'context_processors': [
+                'django.template.context_processors.debug',
+                'django.template.context_processors.request',
+                'django.contrib.auth.context_processors.auth',
+                'django.contrib.messages.context_processors.messages',
+            ],
+        },
+    },
+]
+
+WSGI_APPLICATION = 'mysite.wsgi.application'
+
+
+# Database
+# https://docs.djangoproject.com/en/1.11/ref/settings/#databases
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.mysql',
+        'NAME': 'djangodb',
+        'USER': 'django',
+        'PASSWORD': 'django',
+        'HOST': 'mysql',
+        'PORT': 3306,
+    }
+}
+
+
+# Internationalization
+# https://docs.djangoproject.com/en/1.11/topics/i18n/
+
+LANGUAGE_CODE = 'en-us'
+
+TIME_ZONE = 'UTC'
+
+USE_I18N = True
+
+USE_L10N = True
+
+USE_TZ = True
+
+
+# Static files (CSS, JavaScript, Images)
+# https://docs.djangoproject.com/en/1.11/howto/static-files/
+
+STATIC_URL = '/static/'

django-mysql/src/mysite/__pycache__/__init__.cpython-38.pyc

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+from django.conf.urls import include, url
+from django.contrib import admin
+
+urlpatterns = [
+    url(r'^polls/', include('polls.urls')),
+    url(r'^admin/', admin.site.urls),
+]

django-mysql/src/mysite/__pycache__/settings.cpython-38.pyc

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+"""
+WSGI config for mysite project.
+
+It exposes the WSGI callable as a module-level variable named ``application``.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/1.11/howto/deployment/wsgi/
+"""
+
+import os
+
+from django.core.wsgi import get_wsgi_application
+
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mysite.settings")
+
+application = get_wsgi_application()

django-mysql/src/mysite/__pycache__/urls.cpython-38.pyc

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+from django.contrib import admin
+
+from .models import Choice, Question
+
+
+class ChoiceInline(admin.TabularInline):
+    model = Choice
+    extra = 3
+
+
+class QuestionAdmin(admin.ModelAdmin):
+    fieldsets = [
+        (None,               {'fields': ['question_text']}),
+        ('Date information', {'fields': ['pub_date'],
+                              'classes': ['collapse']}),
+    ]
+    inlines = [ChoiceInline]
+    list_display = ('question_text', 'pub_date', 'was_published_recently')
+    list_filter = ['pub_date']
+    search_fields = ['question_text']
+
+admin.site.register(Question, QuestionAdmin)

django-mysql/src/mysite/__pycache__/wsgi.cpython-38.pyc

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+from django.apps import AppConfig
+
+
+class PollsConfig(AppConfig):
+    name = 'polls'

django-mysql/src/mysite/settings.py

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+# Generated by Django 3.2 on 2021-07-16 06:43
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Question',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('question_text', models.CharField(max_length=200)),
+                ('pub_date', models.DateTimeField(verbose_name='date published')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Choice',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('choice_text', models.CharField(max_length=200)),
+                ('votes', models.IntegerField(default=0)),
+                ('question', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='polls.question')),
+            ],
+        ),
+    ]

django-mysql/src/mysite/urls.py

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+import datetime
+
+from django.utils import timezone
+from django.db import models
+
+
+class Question(models.Model):
+    question_text = models.CharField(max_length=200)
+    pub_date = models.DateTimeField('date published')
+
+    def __str__(self):
+        return self.question_text
+
+    def was_published_recently(self):
+        now = timezone.now()
+        return now - datetime.timedelta(days=1) <= self.pub_date <= now
+
+    was_published_recently.admin_order_field = 'pub_date'
+    was_published_recently.boolean = True
+    was_published_recently.short_description = 'Published recently?'
+
+
+class Choice(models.Model):
+    question = models.ForeignKey(Question, on_delete=models.CASCADE)
+    choice_text = models.CharField(max_length=200)
+    votes = models.IntegerField(default=0)
+
+    def __str__(self):
+        return self.choice_text

django-mysql/src/mysite/wsgi.py

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+body {
+    background: white url("images/background.gif") no-repeat;
+}
+
+li a {
+    color: green;
+}

django-mysql/src/polls/__init__.py

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+{% extends "admin/base.html" %}
+
+{% block title %}{{ title }} | {{ site_title|default:_('Django site admin') }}{% endblock %}
+
+{% block branding %}
+<h1 id="site-name"><a href="{% url 'admin:index' %}">Polls Administration</a></h1>
+{% endblock %}
+
+{% block nav-global %}{% endblock %}

django-mysql/src/polls/__pycache__/__init__.cpython-38.pyc

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+<h1>{{ question.question_text }}</h1>
+
+{% if error_message %}<p><strong>{{ error_message }}</strong></p>{% endif %}
+
+<form action="{% url 'polls:vote' question.id %}" method="post">
+{% csrf_token %}
+{% for choice in question.choice_set.all %}
+    <input type="radio" name="choice" id="choice{{ forloop.counter }}" value="{{ choice.id }}" />
+    <label for="choice{{ forloop.counter }}">{{ choice.choice_text }}</label><br />
+{% endfor %}
+<input type="submit" value="Vote" />
+</form>

django-mysql/src/polls/__pycache__/admin.cpython-38.pyc

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+{% load static %}
+
+<link rel="stylesheet" type="text/css" href="{% static 'polls/style.css' %}" />
+
+{% if latest_question_list %}
+    <ul>
+    {% for question in latest_question_list %}
+        <li><a href="{% url 'polls:detail' question.id %}">{{ question.question_text }}</a></li>
+    {% endfor %}
+    </ul>
+{% else %}
+    <p>No polls are available.</p>
+{% endif %}

django-mysql/src/polls/__pycache__/apps.cpython-38.pyc

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+<h1>{{ question.question_text }}</h1>
+
+<ul>
+{% for choice in question.choice_set.all %}
+    <li>{{ choice.choice_text }} -- {{ choice.votes }} vote{{ choice.votes|pluralize }}</li>
+{% endfor %}
+</ul>
+
+<a href="{% url 'polls:detail' question.id %}">Vote again?</a>