adding exercise for docker compose
This commit is contained in:
Anja Freudenreich
parent
46192ddcc9
commit
ab4179c785
14
Teil1/app/Dockerfile
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14
Teil1/app/Dockerfile
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# Example of Dockerfile
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FROM python:3.8.5-alpine3.12
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WORKDIR /app
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EXPOSE 5000
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ENV FLASK_APP=app.py
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COPY . /app
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RUN pip install -r requirements.txt
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ENTRYPOINT [ "flask"]
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CMD [ "run", "--host=0.0.0.0" ]
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100
Teil1/app/app.py
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100
Teil1/app/app.py
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from flask import Flask, request, jsonify, render_template
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import mysql.connector
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app = Flask(__name__)
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def employee_data():
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# Connect to MySQL database
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conn = mysql.connector.connect(
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host='db', # Use the IP address or hostname of the MySQL container
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port='3306', # MySQL port
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user='root', # MySQL username
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password='root_password', # MySQL password
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database='employees' # Name of the database
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)
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# Create a cursor object to execute SQL commands
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cursor = conn.cursor()
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cursor.execute('SELECT Employee_Name, Title FROM employee_data')
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results = cursor.fetchall()
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cursor.close()
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conn.close()
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return results
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# Endpoint to add a new entry to the database
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@app.route('/add', methods=['POST'])
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def add_entry():
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# Connect to MySQL database
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conn = mysql.connector.connect(
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host='db', # Use the IP address or hostname of the MySQL container
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port='3306', # MySQL port
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user='root', # MySQL username
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password='root_password', # MySQL password
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database='employees' # Name of the database
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)
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# Create a cursor object to execute SQL commands
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cursor = conn.cursor()
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# Get data from request
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data = request.get_json()
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employee_name = data.get('employee_name')
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title = data.get('title')
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# SQL query to insert data into the employee_data table
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sql_query = "INSERT INTO employee_data (Employee_Name, Title) VALUES (%s, %s)"
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try:
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# Execute the SQL query
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cursor.execute(sql_query, (employee_name, title))
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# Commit the transaction
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conn.commit()
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cursor.close()
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conn.close()
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return jsonify({'message': 'Entry added successfully'}), 200
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except Exception as e:
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# Rollback in case of any error
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conn.rollback()
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cursor.close()
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conn.close()
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return jsonify({'error': str(e)}), 500
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# Endpoint to list all entries in the database
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@app.route('/entries', methods=['GET'])
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def get_entries():
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# Connect to MySQL database
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conn = mysql.connector.connect(
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host='db', # Use the IP address or hostname of the MySQL container
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port='3306', # MySQL port
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user='root', # MySQL username
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password='root_password', # MySQL password
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database='employees' # Name of the database
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)
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# Create a cursor object to execute SQL commands
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cursor = conn.cursor()
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# SQL query to select all entries from the employee_data table
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sql_query = "SELECT * FROM employee_data"
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# Execute the SQL query
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cursor.execute(sql_query)
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# Fetch all entries
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entries = cursor.fetchall()
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# Convert entries to JSON format
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entries_json = [{'Employee_Name': entry[0], 'Title': entry[1]} for entry in entries]
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cursor.close()
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conn.close()
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return jsonify(entries_json), 200
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@app.route('/')
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def index():
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#return jsonify({'Employee Data': employee_data()})
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entries = employee_data()
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return render_template('index.html', entries=entries)
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#return "Hello world"
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if __name__ == '__main__':
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#app.run(debug = True, host='0.0.0.0')
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app.run()
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2
Teil1/app/requirements.txt
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2
Teil1/app/requirements.txt
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Flask
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mysql-connector
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37
Teil1/app/templates/index.html
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37
Teil1/app/templates/index.html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>MySQL Database Entries</title>
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<style>
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table {
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border-collapse: collapse;
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width: 100%;
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}
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th, td {
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border: 1px solid #dddddd;
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text-align: left;
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padding: 8px;
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}
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</style>
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</head>
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<body>
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<h1>SQLite Database Entries</h1>
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<table>
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<tr>
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<th>Name</th>
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<th>Position</th>
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<!-- Add more table headers if needed -->
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</tr>
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{% for entry in entries %}
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<tr>
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<td>{{ entry[0] }}</td>
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<td>{{ entry[1] }}</td>
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<!-- Access more columns if needed -->
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</tr>
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{% endfor %}
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</table>
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</body>
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</html>
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12
Teil1/db/Dockerfile
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12
Teil1/db/Dockerfile
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# Use the official MySQL image from Docker Hub
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FROM mysql:latest
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# Set environment variables
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ENV MYSQL_ROOT_PASSWORD=root_password
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ENV MYSQL_DATABASE=employees
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# Copy the SQL initialization script into the container
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COPY init.sql /docker-entrypoint-initdb.d/
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# Expose port 3306 to allow external connections to the database
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EXPOSE 3306
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15
Teil1/db/init.sql
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15
Teil1/db/init.sql
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CREATE DATABASE employees;
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USE employees;
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CREATE TABLE employee_data (
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Employee_Name VARCHAR(50),
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Title VARCHAR(50)
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);
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INSERT INTO employee_data
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(Employee_Name, Title)
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VALUES
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('Amit Khanna', 'Manager'),
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('Anjali Gupta', 'Engineer');
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14
Teil2/app/Dockerfile
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14
Teil2/app/Dockerfile
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@ -0,0 +1,14 @@
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# Example of Dockerfile
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FROM python:3.8.5-alpine3.12
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WORKDIR /app
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EXPOSE 5000
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ENV FLASK_APP=app.py
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COPY . /app
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RUN pip install -r requirements.txt
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ENTRYPOINT [ "flask"]
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CMD [ "run", "--host=0.0.0.0" ]
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100
Teil2/app/app.py
Normal file
100
Teil2/app/app.py
Normal file
@ -0,0 +1,100 @@
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from flask import Flask, request, jsonify, render_template
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import mysql.connector
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app = Flask(__name__)
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def employee_data():
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# Connect to MySQL database
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conn = mysql.connector.connect(
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host='db', # Use the IP address or hostname of the MySQL container
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port='3306', # MySQL port
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user='root', # MySQL username
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password='root_password', # MySQL password
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database='employees' # Name of the database
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)
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# Create a cursor object to execute SQL commands
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cursor = conn.cursor()
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cursor.execute('SELECT Employee_Name, Title FROM employee_data')
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results = cursor.fetchall()
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cursor.close()
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conn.close()
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return results
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# Endpoint to add a new entry to the database
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@app.route('/add', methods=['POST'])
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def add_entry():
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# Connect to MySQL database
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conn = mysql.connector.connect(
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host='db', # Use the IP address or hostname of the MySQL container
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port='3306', # MySQL port
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user='root', # MySQL username
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password='root_password', # MySQL password
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database='employees' # Name of the database
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)
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# Create a cursor object to execute SQL commands
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cursor = conn.cursor()
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# Get data from request
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data = request.get_json()
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employee_name = data.get('employee_name')
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title = data.get('title')
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# SQL query to insert data into the employee_data table
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sql_query = "INSERT INTO employee_data (Employee_Name, Title) VALUES (%s, %s)"
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try:
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# Execute the SQL query
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cursor.execute(sql_query, (employee_name, title))
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# Commit the transaction
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conn.commit()
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cursor.close()
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conn.close()
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return jsonify({'message': 'Entry added successfully'}), 200
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except Exception as e:
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# Rollback in case of any error
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conn.rollback()
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cursor.close()
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conn.close()
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return jsonify({'error': str(e)}), 500
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# Endpoint to list all entries in the database
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@app.route('/entries', methods=['GET'])
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def get_entries():
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# Connect to MySQL database
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conn = mysql.connector.connect(
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host='db', # Use the IP address or hostname of the MySQL container
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port='3306', # MySQL port
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user='root', # MySQL username
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password='root_password', # MySQL password
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database='employees' # Name of the database
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)
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# Create a cursor object to execute SQL commands
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cursor = conn.cursor()
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# SQL query to select all entries from the employee_data table
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sql_query = "SELECT * FROM employee_data"
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# Execute the SQL query
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cursor.execute(sql_query)
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# Fetch all entries
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entries = cursor.fetchall()
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# Convert entries to JSON format
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entries_json = [{'Employee_Name': entry[0], 'Title': entry[1]} for entry in entries]
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cursor.close()
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conn.close()
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return jsonify(entries_json), 200
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@app.route('/')
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def index():
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#return jsonify({'Employee Data': employee_data()})
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entries = employee_data()
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return render_template('index.html', entries=entries)
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#return "Hello world"
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if __name__ == '__main__':
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#app.run(debug = True, host='0.0.0.0')
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app.run()
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2
Teil2/app/requirements.txt
Normal file
2
Teil2/app/requirements.txt
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@ -0,0 +1,2 @@
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Flask
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mysql-connector
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37
Teil2/app/templates/index.html
Normal file
37
Teil2/app/templates/index.html
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@ -0,0 +1,37 @@
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>MySQL Database Entries</title>
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<style>
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table {
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border-collapse: collapse;
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width: 100%;
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}
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th, td {
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border: 1px solid #dddddd;
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text-align: left;
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padding: 8px;
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}
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</style>
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</head>
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<body>
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<h1>SQLite Database Entries</h1>
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<table>
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<tr>
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<th>Name</th>
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<th>Position</th>
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<!-- Add more table headers if needed -->
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</tr>
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{% for entry in entries %}
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<tr>
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<td>{{ entry[0] }}</td>
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<td>{{ entry[1] }}</td>
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<!-- Access more columns if needed -->
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</tr>
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{% endfor %}
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</table>
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</body>
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</html>
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21
Teil2/compose.yml
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21
Teil2/compose.yml
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@ -0,0 +1,21 @@
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services:
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app:
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build: ./app
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links:
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- db
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ports:
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- "5000:5000"
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depends_on:
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- db
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db:
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image: mysql:5.7
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ports:
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- "3306:3306"
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environment:
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MYSQL_ROOT_PASSWORD: root_password
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volumes:
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- ./db/init.sql:/docker-entrypoint-initdb.d/init.sql
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- ./data:/var/lib/mysql
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15
Teil2/db/init.sql
Executable file
15
Teil2/db/init.sql
Executable file
@ -0,0 +1,15 @@
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CREATE DATABASE employees;
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USE employees;
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CREATE TABLE employee_data (
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Employee_Name VARCHAR(50),
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Title VARCHAR(50)
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);
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INSERT INTO employee_data
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(Employee_Name, Title)
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VALUES
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('Amit Khanna', 'Manager'),
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('Anjali Gupta', 'Engineer');
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71
Teil2/main.c
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71
Teil2/main.c
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <arpa/inet.h>
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#include <sys/socket.h>
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#define PORT 5000
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#define BUFFER_SIZE 1024
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int main(int argc, char *argv[]) {
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char *endpoint = "";
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char *data = ""; // Data to be sent in the POST request
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if (argc > 1) {
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endpoint = argv[1];
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}
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if (argc > 2) {
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data = argv[2];
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}
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char request[BUFFER_SIZE];
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snprintf(request, BUFFER_SIZE, "POST /%s HTTP/1.1\r\nHost: localhost:5000\r\nContent-Type: application/json\r\nContent-Length: %ld\r\n\r\n%s", endpoint, strlen(data), data);
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int sockfd;
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struct sockaddr_in server_addr;
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char buffer[BUFFER_SIZE];
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// Create socket
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sockfd = socket(AF_INET, SOCK_STREAM, 0);
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if (sockfd < 0) {
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perror("Error in socket creation");
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exit(EXIT_FAILURE);
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}
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// Set up server address
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server_addr.sin_family = AF_INET;
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server_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
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server_addr.sin_port = htons(PORT);
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// Connect to server
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if (connect(sockfd, (struct sockaddr *)&server_addr, sizeof(server_addr)) < 0) {
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perror("Error in connection");
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exit(EXIT_FAILURE);
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}
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// Send HTTP request
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if (send(sockfd, request, strlen(request), 0) != strlen(request)) {
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perror("Error in sending request");
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exit(EXIT_FAILURE);
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}
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// Receive data from server
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ssize_t total_bytes_received = 0;
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ssize_t bytes_received;
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while ((bytes_received = recv(sockfd, buffer, BUFFER_SIZE, 0)) > 0) {
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// Display received data
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fwrite(buffer, 1, bytes_received, stdout);
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total_bytes_received += bytes_received;
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}
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if (bytes_received < 0) {
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perror("Error in receiving data");
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exit(EXIT_FAILURE);
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}
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// Close socket
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close(sockfd);
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return 0;
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}
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