88 lines
3.3 KiB
Python
88 lines
3.3 KiB
Python
import http.server
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import http.client
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import yaml
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import docker
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from socketserver import ThreadingMixIn
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import threading
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# Define the target server to proxy requests to
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class ProxyHandler(http.server.BaseHTTPRequestHandler):
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def __init__(self, configuration, docker_client):
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self.configuration = configuration
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self.docker_client = docker_client
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def __call__(self, *args, **kwargs):
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"""Handle a request."""
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super().__init__(*args, **kwargs)
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def log_message(self, format, *args):
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pass
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def do_GET(self):
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self.handle_request('GET')
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def do_POST(self):
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self.handle_request('POST')
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def do_PUT(self):
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self.handle_request('PUT')
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def do_DELETE(self):
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self.handle_request('DELETE')
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def do_HEAD(self):
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self.handle_request('HEAD')
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def handle_request(self, method):
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#print(self.headers.get('Host').split(":")[0])
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proxy_host_configuration = next(filter(lambda host: host['domain'] == self.headers.get('Host').split(":")[0], self.configuration['proxy_hosts']))
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starting = False
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for container in proxy_host_configuration['containers']:
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container_object = self.docker_client.containers.list(all=True, filters = { 'name' : container['container_name'] })[0]
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if (container_object.status != 'running'):
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print("starting container: {0}".format(container['container_name']))
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container_object.start()
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starting = True
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if (starting == True):
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self.send_response(201)
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self.send_header('Content-Type', 'text/plain')
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self.send_header('Cache-Control', 'no-cache, no-store, must-revalidate')
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self.send_header('Pragma', 'no-cache')
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self.send_header('Expires', '0')
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self.send_header('refresh', proxy_host_configuration['proxy_timeout_seconds'])
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self.end_headers()
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self.wfile.write(bytes("starting container: {0} waiting for {1}s".format(container['container_name'], proxy_host_configuration['proxy_timeout_seconds']),"utf-8"))
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return
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# Open a connection to the target server
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conn = http.client.HTTPConnection(proxy_host_configuration['proxy_host'], proxy_host_configuration['proxy_port'])
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conn.request(method, self.path, headers=self.headers)
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response = conn.getresponse()
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self.send_response(response.status)
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self.send_header('host', proxy_host_configuration['proxy_host'])
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for header, value in response.getheaders():
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self.send_header(header, value)
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self.end_headers()
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self.wfile.write(response.read())
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conn.close()
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class ThreadedHTTPServer(ThreadingMixIn, http.server.HTTPServer):
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"""Handle requests in a separate thread."""
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if __name__ == '__main__':
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with open('config.yml', 'r') as file:
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configuration = yaml.safe_load(file)
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docker_client = docker.from_env()
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# Start the reverse proxy server on port 8888
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server_address = ('', configuration['proxy_port'])
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proxy_handler = ProxyHandler(configuration, docker_client)
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httpd = ThreadedHTTPServer(server_address, proxy_handler)
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print('Reverse proxy server running on port {0}...'.format(configuration['proxy_port']))
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httpd.serve_forever() |