Fix DockerHandler and NginxHandler bugs

app/app.py

@@ -18,14 +18,11 @@ def main():
 
         # Create an NginxHandler instance
         nginx_handler = NginxHandler('/etc/nginx/nginx.conf')
-        print(1)
         docker_handler.get_ip_by_dns_name(
             docker_handler.get_current_container_name())
-        print(2)
 
         nginx_handler.setup_config_file(
             port_map, docker_handler.get_ip_by_dns_name(docker_handler.get_current_container_name()), docker_handler)
-        print(3)
 
         nginx_handler.print_config()
 

app/dockerHandler.py

@@ -19,15 +19,13 @@ class DockerHandler:
     def get_current_container(self):
         hostname = self.get_current_container_name()
         if hostname:
-            return self.get_container_by_name(hostname)
+            return self.client.containers.get(hostname)
         return None
 
     def get_current_container_name(self):
-        # Get container name from environment variable
         return os.environ.get('HOSTNAME')
 
     def get_current_network(self):
-        # Get network of current container
         current_container = self.get_current_container()
         if current_container:
             networks = current_container.attrs['NetworkSettings']['Networks']
@@ -43,7 +41,7 @@ class DockerHandler:
 
         for container in containers:
             networks = container.attrs['NetworkSettings']['Networks']
-            if self.current_network in networks and networks[self.current_network]['IPAMConfig']['IPv4Address'] == ip:
+            if self.current_network in networks and networks[self.current_network]['IPAddress'] == ip:
                 logging.info(
                     f'Found container {container.name} with ip {ip} in network {self.current_network}')
                 return container
@@ -51,13 +49,6 @@ class DockerHandler:
             f'No docker container found with ip {ip} in network {self.current_network}')
         return None
 
-    def get_container_by_name(self, name):
-        try:
-            return self.client.containers.get(name)
-        except docker.errors.NotFound:
-            logging.error(f'Container {name} not found')
-            return None
-
     def is_container_starting(self, container):
         if container:
             return container.attrs['State']['Health']['Status'] == 'starting'
@@ -87,12 +78,6 @@ class DockerHandler:
             return None
 
     def get_ip_by_dns_name(self, dns_name):
-        for container in self.client.containers.list(all=True):
-            networks = container.attrs['NetworkSettings']['Networks']
-            if self.current_network in networks:
-                logging.info(
-                    f'Container {container.name} ip: {networks[self.current_network]["IPAddress"]}, dns name: {networks[self.current_network]["Aliases"]}')
-
         try:
             containers = self.client.containers.list(
                 all=True, filters={"network": self.current_network})
@@ -100,13 +85,13 @@ class DockerHandler:
             if containers is None:
                 logging.info('No containers found')
                 return None
-
             for container in containers:
                 networks = container.attrs['NetworkSettings']['Networks']
                 if self.current_network in networks and dns_name in networks[self.current_network]['Aliases']:
+                    ip = networks[self.current_network]['IPAddress']
                     logging.info(
-                        f'Found container {container.name} with dns name {dns_name} in network {self.current_network}')
+                        f'Found container {container.name} with dns name {dns_name} with ip {ip} in network {self.current_network}')
-                    return networks[self.current_network]['IPAddress']
+                    return ip
             logging.info(
                 f'No docker container found with dns name {dns_name} in network {self.current_network}')
             return None

app/nginxHandler.py

@@ -25,7 +25,6 @@ class NginxHandler:
             logging.info(f.read())
 
     def setup_config_file(self, port_map, current_container_ip, docker_handler):
-        print(f'-------------------> {port_map}')
         if port_map is None:
             logging.error('port_map is None')
             return
@@ -47,9 +46,7 @@ class NginxHandler:
         # Example for the nginx-example.conf file is in the repo root directory
         if isinstance(port_map, dict):
             for port in port_map:
-                print(f'-------------------> {port_map}')
                 ip = docker_handler.get_ip_by_dns_name(port_map[port])
-                print(f'-------------------> {port_map[port]}, {ip}')
 
                 nginx_conf.write(f'    upstream upstream_{port} {{\n')
                 nginx_conf.write(f'        server {ip}:25565;\n')

app/requestHandler.py

@@ -29,7 +29,7 @@ class RequestHandler(threading.Thread):
                 logging.info(f'Waiting for a connection on port {self.port}')
                 self.connection, self.client_address = self.sock.accept()
                 try:
-                    logging.info('Connection from', self.client_address)
+                    logging.info(f'Connection from {self.client_address}')
                     self.handle_request()
                 except Exception as e:
                     logging.info(
@@ -47,8 +47,11 @@ class RequestHandler(threading.Thread):
 
     def handle_request(self):
         logging.info(f'Handling request on port {self.port}')
+        print(docker_container_mapping().get(str(self.port)))
         container_ip = self.docker_handler.get_ip_by_dns_name(
             docker_container_mapping().get(str(self.port)))
+        print(f"----Container IP: {container_ip}")
+
         if container_ip:
             container = self.docker_handler.get_container_by_ip(
                 container_ip)

app/utils.py

@@ -1,19 +1,23 @@
 import logging
 import os
 import socket
-import socket
 
 
 def docker_container_mapping():
-    port_ip_map_str = os.environ.get('PORT_MAP')
+    port_map_str = os.environ.get('PORT_MAP')
-    # Convert the environment variable to a Python dictionary
-    port_ip_map = {}
-    for line in port_ip_map_str.split('\n'):
-        if line:  # ignore empty lines
-            port, ip = line.split(':')
-            port_ip_map[port.strip()] = ip.strip()
 
-    return port_ip_map
+    port_map = {}
+    for line in port_map_str.split('\n'):
+        if line:
+            port, name = line.split(':')
+            port_map[port.strip()] = name.strip().replace(
+                "'", "").replace('"', "").strip()
+
+    # print port map for debugging
+    logging.info('PORT_MAP:')
+    for port in port_map:
+        logging.info(f'{port} -> {port_map[port]}')
+    return port_map
 
 
 def get_ip_by_dns_name(dns_name):

docker-compose.yml

@@ -54,6 +54,7 @@ services:
     restart: always
     image: itzg/minecraft-server:java8
     environment:
+      VERSION: "1.12.2"
       EULA: "TRUE"
       MOTD: "Starting, please wait..."