Add docker support

Author: Cyclonecode

.dockerignore

@@ -0,0 +1,12 @@
+node_modules
+.nvmrc
+.prettierrc
+ecosystem.config.js
+LICENSE
+README.md
+CODE_OF_CONDUCT.md
+.gitignore
+.git
+.eslintrc.js
+index.html
+.idea

README.md

@@ -2,6 +2,28 @@
 
 A simple example of using a user defined function (UDF) in mysql to make real-time notifications on a table change. This project consists of a mysql plugin that setups a server socket that receives messages from a trigger connected to INSERT, UPDATE, DELETE operations on a specific table in the database. The server will then send a message to a nodejs server that in turn will bounce this notification to any connected http client over a websocket.
 
+## Docker
+
+The project has two Dockerfiles that can be used to build and start two services.
+One running the node application, which includes the http server, websocket server and also the socket server
+acting as a bridge for data sent from the second container.
+The second container runs the mysql server and uses a small bootstrap script to compile the mysql plugin and then
+install the database and setup the needed triggers.
+
+### docker-compose
+
+    docker-compose build
+
+Build the containers.
+
+    docker-compose up -d
+
+Runs both services.
+
+    docker-compose down
+
+Terminate both containers.
+
 ## Compiling
 
 ### Manually

docker-compose.yml

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+version: '3'
+services:
+  node:
+    build:
+      context: .
+      dockerfile: docker/Dockerfile
+      args:
+        - SERVER_ADDRESS=$SERVER_ADDRESS
+        - SERVER_PORT=$SERVER_PORT
+        - WEBSOCKET_PORT=$WEBSOCKET_PORT
+    container_name: mysqlnote_node
+    ports:
+     - "$WEBSOCKET_PORT:$WEBSOCKET_PORT"
+     - "$SERVER_PORT:$SERVER_PORT"
+    environment:
+      - WEBSOCKET_PORT=$WEBSOCKET_PORT
+      - MYSQL_HOSTNAME=mysql
+      - SERVER_ADDRESS=$SERVER_ADDRESS
+      - SERVER_PORT=$SERVER_PORT
+    depends_on:
+      - mysql
+    networks:
+      main:
+        aliases:
+          - node
+  mysql:
+    build:
+      context: .
+      dockerfile: docker/Dockerfile.mysql
+      args:
+        - SERVER_ADDRESS=$SERVER_ADDRESS
+        - SERVER_PORT=$SERVER_PORT
+    container_name: mysqlnote_mysql
+    ports:
+      - "$MYSQL_PORT:$MYSQL_PORT"
+    restart: always
+    environment:
+      - MYSQL_ROOT_PASSWORD=secret
+      - MYSQL_USER=$MYSQL_USERNAME
+      - MYSQL_PASSWORD=$MYSQL_PASSWORD
+      - MYSQL_DATABASE=$MYSQL_DATABASE
+      - MYSQL_PORT=$MYSQL_PORT
+      - SERVER_PORT=$SERVER_PORT
+      - SERVER_ADDRESS=node
+    # command: --innodb-use-native-aio=0
+    volumes:
+      - ./docker/my.cnf:/etc/mysql/mysql.conf.d/my.cnf
+      - ./mysql-plugin:/mysql-plugin
+      - ./docker/bootstrap:/docker-entrypoint-initdb.d
+      - ./bin/test.sql:/data/application/test.sql
+    networks:
+      main:
+        aliases:
+          - mysql
+networks:
+  main:

docker/Dockerfile

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+FROM node:14.15.3
+
+RUN apt update
+RUN apt install nano
+
+ARG WEBSOCKET_PORT=8080
+ARG SERVER_PORT=2048
+ARG SERVER_ADDRESS=127.0.0.1
+ARG MYSQL_HOSTNAME=127.0.0.1
+
+ENV WEBSOCKET_PORT=$WEBSOCKET_PORT
+ENV SERVER_ADDRESS=$SERVER_ADDRESS
+ENV SERVER_PORT=$SERVER_PORT
+ENV MYSQL_HOSTNAME=$MYSQL_HOSTNAME
+
+EXPOSE $WEBSOCKET_PORT
+EXPOSE $SERVER_PORT
+
+# This thing first installs npm packages and then it copies the committed files as an overlay
+WORKDIR /usr/src/app
+COPY package*json ./
+
+RUN npm install --production --no-optional
+COPY . .
+CMD ["node", "scripts/server.js"]

docker/Dockerfile.mysql

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+FROM mysql:5.7
+
+ARG SERVER_ADDRESS=127.0.0.1
+ARG SERVER_PORT=2048
+
+ENV SERVER_ADDRESS=$SERVER_ADDRESS
+ENV SERVER_PORT=$SERVER_PORT
+
+RUN apt-get update && apt-get install -y sudo gcc make libmysqlclient-dev
+RUN useradd -m docker && echo "docker:docker" | chpasswd && adduser docker sudo
+USER root
+ADD docker/sudo.txt /etc/sudoers
+RUN chmod 440 /etc/sudoers
+USER docker
+WORKDIR /tmp
+COPY mysql-plugin/src src
+COPY x.c .

docker/bootstrap/bootstrap.sh

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+#!/bin/bash
+
+cd /tmp/src
+sudo -E make
+sudo cp mysql-notification.so `mysql_config --plugindir`
+mysql -uroot -p$MYSQL_ROOT_PASSWORD < /data/application/test.sql

docker/my.cnf

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+# Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+
+#
+# The MySQL  Server configuration file.
+#
+# For explanations see
+# http://dev.mysql.com/doc/mysql/en/server-system-variables.html
+
+[mysqld]
+pid-file	= /var/run/mysqld/mysqld.pid
+socket		= /var/run/mysqld/mysqld.sock
+datadir		= /var/lib/mysql
+#log-error	= /var/log/mysql/error.log
+# By default we only accept connections from localhost
+bind-address = 0.0.0.0
+# Disabling symbolic-links is recommended to prevent assorted security risks
+symbolic-links=0

docker/sudo.txt

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+root ALL=(ALL) ALL
+docker ALL=(ALL) NOPASSWD: ALL