52 lines
1.5 KiB
Python
Executable File
52 lines
1.5 KiB
Python
Executable File
import os
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from flask import Flask
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import mysql.connector
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class DBManager:
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def __init__(self, database='example', host="db", user="root", password_file=None):
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pf = open(password_file, 'r')
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self.connection = mysql.connector.connect(
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user=user,
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password=pf.read(),
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host=host, # name of the mysql service as set in the docker compose file
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database=database,
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auth_plugin='mysql_native_password'
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)
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pf.close()
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self.cursor = self.connection.cursor()
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def populate_db(self):
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self.cursor.execute('DROP TABLE IF EXISTS blog')
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self.cursor.execute('CREATE TABLE blog (id INT AUTO_INCREMENT PRIMARY KEY, title VARCHAR(255))')
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self.cursor.executemany('INSERT INTO blog (id, title) VALUES (%s, %s);', [(i, 'Blog post #%d'% i) for i in range (1,5)])
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self.connection.commit()
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def query_titles(self):
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self.cursor.execute('SELECT title FROM blog')
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rec = []
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for c in self.cursor:
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rec.append(c[0])
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return rec
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server = Flask(__name__)
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conn = None
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@server.route('/')
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def listBlog():
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global conn
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if not conn:
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conn = DBManager(password_file='/run/secrets/db-password')
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conn.populate_db()
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rec = conn.query_titles()
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response = ''
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for c in rec:
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response = response + '<div> Hello ' + c + '</div>'
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return response
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if __name__ == '__main__':
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server.run()
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