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import os |
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from .filelock import open_with_lock |
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4
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5
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class CommandManager(object): |
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def __init__(self, commands_filename): |
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base_path, filename = os.path.split(commands_filename) |
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self._running_commands_filename = os.path.join(base_path, "running_" + filename) |
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self._finished_commands_filename = os.path.join(base_path, "finished_" + filename) |
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self._failed_commands_filename = os.path.join(base_path, "failed_" + filename) |
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self._commands_filename = commands_filename |
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def _move_line_between_files(self, file1, file2, line): |
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file1.seek(0, os.SEEK_SET) |
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lines = file1.readlines() |
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lines.remove(line) |
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file1.seek(0, os.SEEK_SET) |
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file1.writelines(lines) |
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file1.truncate() |
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file2.write(line) |
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def set_commands_to_run(self, commands): |
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with open_with_lock(self._commands_filename, 'a') as commands_file: |
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commands = [command + '\n' for command in commands] |
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commands_file.writelines(commands) |
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def get_command_to_run(self): |
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with open_with_lock(self._commands_filename, 'r+') as commands_file: |
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with open_with_lock(self._running_commands_filename, 'a') as running_commands_file: |
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command = commands_file.readline() |
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if command == '': |
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return None |
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self._move_line_between_files(commands_file, running_commands_file, command) |
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return command[:-1] |
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def get_nb_commands_to_run(self): |
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with open(self._commands_filename, 'r') as commands_file: |
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return len(commands_file.readlines()) |
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def get_failed_commands(self): |
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commands = [] |
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if os.path.isfile(self._failed_commands_filename): |
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with open(self._failed_commands_filename, 'r') as commands_file: |
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commands = commands_file.readlines() |
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return commands |
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def set_running_command_as_finished(self, command, error_code=0): |
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if error_code == 0: |
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file_name = self._finished_commands_filename |
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else: |
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file_name = self._failed_commands_filename |
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with open_with_lock(self._running_commands_filename, 'r+') as running_commands_file: |
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with open_with_lock(file_name, 'a') as finished_commands_file: |
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self._move_line_between_files(running_commands_file, finished_commands_file, command + '\n') |
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def set_running_command_as_pending(self, command): |
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with open_with_lock(self._running_commands_filename, 'r+') as running_commands_file: |
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with open_with_lock(self._commands_filename, 'a') as commands_file: |
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self._move_line_between_files(running_commands_file, commands_file, command + '\n') |
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def reset_running_commands(self): |
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if os.path.isfile(self._running_commands_filename): |
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with open_with_lock(self._commands_filename, 'r+') as commands_file: |
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with open_with_lock(self._running_commands_filename, 'r+') as running_commands_file: |
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commands = running_commands_file.readlines() |
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if len(commands) > 0: |
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running_commands_file.seek(0, os.SEEK_SET) |
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running_commands_file.truncate() |
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commands += commands_file.readlines() |
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commands_file.seek(0, os.SEEK_SET) |
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commands_file.writelines(commands) |
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SMART-Lab /
smartdispatch
