update: colorful debug output

boot.py

@@ -1,8 +1,6 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-# from __future__ import annotations
-
 import os
 import sys
 import yaml
@@ -14,10 +12,17 @@ from syncplay import ep_server
 
 class SyncplayBoot:
     """ Handle Syncplay bootstrap arguments. """
-    def __debug(self, msg: str) -> None:
+    def __debug(self, prefix: str, message: Any) -> None:
         """ Print out debug information. """
         if self.__debug_mode:
-            print(f'\033[90m{msg}\033[0m', file=sys.stderr)
+            print(f'\033[33m{prefix}\033[0m -> \033[90m{message}\033[0m', file=sys.stderr)
+
+    def __temp_file(self, file: str, content: str) -> str:
+        """ Create and save content to temporary files. """
+        file = os.path.join(self.__temp_dir, file)
+        with open(file, 'w', encoding='utf-8') as fp:
+            fp.write(content)
+        return file
 
     def __build_parser(self) -> Generator:
         """ Build arguments parser for Syncplay bootstrap. """
@@ -48,33 +53,32 @@ class SyncplayBoot:
             yield action.dest, opt_type, is_list
 
     def __init__(self, args: list[str], config: dict[str, Any],
-                 work_dir: str, cert_dir: str, debug_mode: bool = False):
-        self.__work_dir = work_dir
-        self.__cert_dir = cert_dir
+                 cert_dir: str, temp_dir: str, work_dir: str, debug_mode: bool = False):
         self.__debug_mode = debug_mode
+        self.__cert_dir, self.__temp_dir, self.__work_dir = cert_dir, temp_dir, work_dir
         self.__options = [x for x in self.__build_options()]  # list[(NAME, TYPE, IS_LIST)]
-        self.__debug(f'Bootstrap options -> {self.__options}\n')
+        self.__debug('Bootstrap options', self.__options)
 
         env_opts = self.__load_from_env()
-        self.__debug(f'Environment options -> {env_opts}\n')
+        self.__debug('Environment options', env_opts)
         cfg_opts = self.__load_from_config(config)
-        self.__debug(f'Configure file options -> {cfg_opts}\n')
+        self.__debug('Configure file options', cfg_opts)
         cli_opts = self.__load_from_args(args)
-        self.__debug(f'Command line options -> {cli_opts}\n')
+        self.__debug('Command line options', cli_opts)
 
         self.__opts = env_opts | cfg_opts | cli_opts
-        self.__debug(f'Bootstrap final options -> {self.__opts}\n')
+        self.__debug('Bootstrap final options', self.__opts)
 
     def __load_from_args(self, raw_args: list[str]) -> dict[str, Any]:
         """ Loading options from command line arguments. """
         args = self.__parser.parse_args(raw_args)
-        self.__debug(f'Command line arguments -> {args}')
+        self.__debug('Command line arguments', args)
         arg_filter = lambda x: x is not None and x is not False
         return {x: y for x, y in vars(args).items() if arg_filter(y)}
 
     def __load_from_config(self, config: dict[str, Any]) -> dict[str, Any]:
         """ Loading options from configure file. """
-        self.__debug(f'Configure file -> {config}')
+        self.__debug('Configure file', config)
         options = {x[0].replace('_', '-'): x[0] for x in self.__options}
         return {options[x]: config[x] for x in options if x in config}
 
@@ -88,25 +92,17 @@ class SyncplayBoot:
             elif opt_type is bool:
                 return opt_field, opt_raw.upper() in ['ON', 'TRUE']
 
-        self.__debug(f'Environment variables -> {os.environ}')
+        self.__debug('Environment variables', os.environ)
         options = {x.upper(): (x, t) for x, t, is_list in self.__options if not is_list}  # filter non-list options
         return dict([__convert(os.environ[x], *y) for x, y in options.items() if x in os.environ])
 
-    @staticmethod
-    def __temp_file(file: str, content: str) -> str:
-        """ Create and save content to temporary files. """
-        file = os.path.join('/tmp/', file)
-        with open(file, 'w') as fp:
-            fp.write(content)
-        return file
-
     def release(self) -> list[str]:
         """ Construct the startup arguments for syncplay server. """
         args = ['--port', str(self.__opts.get('port', 8999))]
         if 'password' in self.__opts:
             args += ['--password', self.__opts['password']]
         if 'motd' in self.__opts:
-            args += ['--motd-file', SyncplayBoot.__temp_file('motd.data', self.__opts['motd'])]
+            args += ['--motd-file', self.__temp_file('motd.data', self.__opts['motd'])]
 
         salt = self.__opts.get('salt', None if 'random_salt' in self.__opts else '')
         if salt is not None:
@@ -128,7 +124,7 @@ class SyncplayBoot:
             args += ['--max-chat-message-length', str(self.__opts['max_chat_message'])]
         if 'permanent_rooms' in self.__opts:
             rooms = '\n'.join(self.__opts['permanent_rooms'])
-            args += ['--permanent-rooms-file', SyncplayBoot.__temp_file('rooms.list', rooms)]
+            args += ['--permanent-rooms-file', self.__temp_file('rooms.list', rooms)]
 
         if 'listen_ipv4' in self.__opts and 'listen_ipv6' in self.__opts:
             args += ['--interface-ipv4', self.__opts['listen_ipv4']]
@@ -138,19 +134,20 @@ class SyncplayBoot:
         elif 'listen_ipv6' in self.__opts:
             args += ['--ipv6-only', '--interface-ipv6', self.__opts['listen_ipv6']]
 
-        self.__debug(f'Syncplay startup arguments -> {args}')
+        self.__debug('Syncplay startup arguments', args)
         return args
 
 
 def syncplay_boot() -> None:
     """ Bootstrap the syncplay server. """
+    temp_dir = os.environ.get('TEMP_DIR', '/tmp')
     work_dir = os.environ.get('WORK_DIR', '/data')
     cert_dir = os.environ.get('CERT_DIR', '/certs')
     config_file = os.environ.get('CONFIG', 'config.yml')
     debug_mode = os.environ.get('DEBUG', '').upper() in ['ON', 'TRUE']
 
     config = yaml.safe_load(open(config_file).read()) if os.path.exists(config_file) else {}
-    bootstrap = SyncplayBoot(sys.argv[1:], config, work_dir, cert_dir, debug_mode)
+    bootstrap = SyncplayBoot(sys.argv[1:], config, cert_dir, temp_dir, work_dir, debug_mode)
     sys.argv = ['syncplay'] + bootstrap.release()