读取文件末尾的1024字节
(self, filepath)
| 58 | self._task_expired_time = None |
| 59 | |
| 60 | def _read_tail_lines(self, filepath): |
| 61 | """读取文件末尾的1024字节 |
| 62 | """ |
| 63 | try: |
| 64 | with open(filepath, 'r') as fh: |
| 65 | fh.seek(0, os.SEEK_END) |
| 66 | size = fh.tell() |
| 67 | pos = 1024 |
| 68 | if size>pos: |
| 69 | fh.seek(size-pos, os.SEEK_SET) |
| 70 | lines = fh.readlines() |
| 71 | return lines[1:] |
| 72 | else: |
| 73 | fh.seek(0, os.SEEK_SET) |
| 74 | return fh.readlines() |
| 75 | except Exception as err: |
| 76 | message = "read file(%s) tail lines error: %s" % (filepath, str(err)) |
| 77 | logger.error(message) |
| 78 | return message |
| 79 | |
| 80 | def terminate(self): |
| 81 | """kill the task""" |