up

docker-compose.yml

@@ -11,12 +11,18 @@ services:
     networks:
       - mynetwork
     healthcheck:
-      test: ["CMD", "mysqladmin", "ping", "--silent"]
-      interval: 10s
+      test: ["CMD-SHELL", "mariadb-admin ping -h localhost -u root --password=${MYSQL_ROOT_PASSWORD}"]
+      interval: 5s
+      timeout: 5s
       retries: 5
+      start_period: 5s
 
   filler:
     build: ./filler
+    environment:
+      MYSQL_DATABASE: ${MYSQL_DATABASE}
+      MYSQL_USER: ${MYSQL_USER}
+      MYSQL_PASSWORD: ${MYSQL_PASSWORD}
     depends_on:
       db:
         condition: service_healthy
@@ -24,9 +30,18 @@ services:
       - ./data.csv:/app/data.csv
     networks:
       - mynetwork
+    healthcheck:
+      test: ["CMD-SHELL", "test", "-f", "/app/data_filled.signal"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
 
   web:
     build: ./web
+    environment:
+      MYSQL_DATABASE: ${MYSQL_DATABASE}
+      MYSQL_USER: ${MYSQL_USER}
+      MYSQL_PASSWORD: ${MYSQL_PASSWORD}
     ports:
       - "8000:8000"
     depends_on:

filler/Dockerfile

@@ -5,6 +5,6 @@ WORKDIR /app
 COPY requirements.txt ./
 RUN pip install --no-cache-dir -r requirements.txt
 
-COPY fill_db.py ./
+COPY filler_db.py ./
 
-ENTRYPOINT ["python", "fill_db.py"]
+ENTRYPOINT ["python", "filler_db.py"]

filler/filler_db.py

@@ -2,6 +2,11 @@ import os
 import time
 import pymysql
 import csv
+import logging
+import time
+
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger(__name__)
 
 db_config = {
     'host': 'db',
@@ -10,15 +15,28 @@ db_config = {
     'db': os.getenv('MYSQL_DATABASE'),
 }
 
+logger.info("Waiting for the database to be ready...")
+logger.info(f"Config: {db_config}")
+
 while True:
-    print("Try connect to db")
+    logger.info("Try connect to db")
     try:
         connection = pymysql.connect(**db_config)
         break
     except pymysql.MySQLError:
         time.sleep(3)
 
-print("")
+with connection.cursor() as cursor:
+    cursor.execute("""
+    CREATE TABLE IF NOT EXISTS data (
+        id INT AUTO_INCREMENT PRIMARY KEY,
+        name VARCHAR(255) NOT NULL,
+        age INT NOT NULL
+    );
+    """)
+    logger.info("Table 'data' is ready.")
+
+logger.info("Start reading csv and insert to db")
 
 with connection.cursor() as cursor, open('data.csv', 'r') as csv_file:
     reader = csv.DictReader(csv_file)
@@ -26,7 +44,13 @@ with connection.cursor() as cursor, open('data.csv', 'r') as csv_file:
         cursor.execute("INSERT INTO data (name, age) VALUES (%s, %s)", (row['name'], row['age']))
     connection.commit()
     
+    logger.info("Database filled successfully.")
+
 with connection.cursor() as cursor:
     cursor.execute("SELECT * FROM data")
     for row in cursor.fetchall():
-        print(row)
+        logger.info(f"Data: {row}")
+
+with open('/app/data_filled.signal', 'w') as signal_file:
+    signal_file.write('done')
+logger.info("Filler task completed. Signal file created.")

filler/requirements.txt

@@ -0,0 +1 @@
+pymysql