initial re-commit to wipe commit histoy due to public repo

backend/app.py

@@ -0,0 +1,59 @@
+import os
+from datetime import datetime
+from flask import Flask
+import mysql.connector
+
+
+class DBManager:
+    def __init__(self, database='flask', host="db", user="flasku", password="flaskp"):
+        envuser = os.getenv("MYSQL_USER")
+        envpass = os.getenv("MYSQL_PASSWORD")
+        #printf("DEBUG:" + envuser + envpass)
+        self.connection = mysql.connector.connect(
+            user=envuser, 
+            #user=user, 
+            password=envpass,
+            #password=password,
+            host=host, # name of the mysql service as set in the docker compose file
+            database=database
+            #auth_plugin='mysql_native_password'
+        )
+        self.cursor = self.connection.cursor()
+    
+    def populate_db(self):
+        self.cursor.execute('DROP TABLE IF EXISTS blog')
+        self.cursor.execute('CREATE TABLE blog (id INT AUTO_INCREMENT PRIMARY KEY, title VARCHAR(255))')
+        self.cursor.executemany('INSERT INTO blog (id, title) VALUES (%s, %s);', [(i, 'Database entry #%d'% i) for i in range (1,5)])
+        self.connection.commit()
+    
+    def query_titles(self):
+        self.cursor.execute('SELECT title FROM blog')
+        rec = []
+        for c in self.cursor:
+            rec.append(c[0])
+        return rec
+
+
+server = Flask(__name__)
+conn = None
+
+@server.route('/')
+def listBlog():
+    global conn
+    if not conn:
+        conn = DBManager()
+        conn.populate_db()
+    rec = conn.query_titles()
+
+    response = ''
+    for c in rec:
+        response = response  + '<div>   Log:  ' + c + '</div>'
+
+    dt = datetime.now()
+    dtFormatted = dt.strftime("%Y-%m-%d %H:%M")
+    response = response + '<div>Delta: ' + dtFormatted + '</div>'
+    return response
+
+
+if __name__ == '__main__':
+    server.run()