9a31a1e689
Depends on #9358 Why I did it Adjust LED logical according to hw-mgmt change. How I did it Add a trigger to set LED to blink. How to verify it Manual test
305 lines
11 KiB
Python
305 lines
11 KiB
Python
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# Copyright (c) 2020-2021 NVIDIA CORPORATION & AFFILIATES.
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# Apache-2.0
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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import os
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import time
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from sonic_py_common.logger import Logger
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from . import utils
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logger = Logger()
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class Led(object):
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STATUS_LED_COLOR_GREEN = 'green'
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STATUS_LED_COLOR_GREEN_BLINK = 'green_blink'
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STATUS_LED_COLOR_RED = 'red'
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STATUS_LED_COLOR_RED_BLINK = 'red_blink'
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STATUS_LED_COLOR_ORANGE = 'orange'
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STATUS_LED_COLOR_ORANGE_BLINK = 'orange_blink'
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STATUS_LED_COLOR_OFF = 'off'
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LED_ON = '255'
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LED_OFF = '0'
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LED_BLINK = '50'
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LED_PATH = "/var/run/hw-management/led/"
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def set_status(self, color):
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led_cap_list = self.get_capability()
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if led_cap_list is None:
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return False
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status = False
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try:
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self._stop_blink(led_cap_list)
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blink_pos = color.find('blink')
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if blink_pos != -1:
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return self._set_status_blink(color, led_cap_list)
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if color == Led.STATUS_LED_COLOR_GREEN:
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utils.write_file(self.get_green_led_path(), Led.LED_ON)
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status = True
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elif color == Led.STATUS_LED_COLOR_RED:
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# Some led don't support red led but support orange led, in this case we set led to orange
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if Led.STATUS_LED_COLOR_RED in led_cap_list:
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led_path = self.get_red_led_path()
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elif Led.STATUS_LED_COLOR_ORANGE in led_cap_list:
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led_path = self.get_orange_led_path()
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else:
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return False
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utils.write_file(led_path, Led.LED_ON)
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status = True
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elif color == Led.STATUS_LED_COLOR_OFF:
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if Led.STATUS_LED_COLOR_GREEN in led_cap_list:
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utils.write_file(self.get_green_led_path(), Led.LED_OFF)
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if Led.STATUS_LED_COLOR_RED in led_cap_list:
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utils.write_file(self.get_red_led_path(), Led.LED_OFF)
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if Led.STATUS_LED_COLOR_ORANGE in led_cap_list:
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utils.write_file(self.get_orange_led_path(), Led.LED_OFF)
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status = True
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else:
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status = False
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except (ValueError, IOError):
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status = False
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return status
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def _set_status_blink(self, color, led_cap_list):
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if color not in led_cap_list:
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if color == Led.STATUS_LED_COLOR_RED_BLINK and Led.STATUS_LED_COLOR_ORANGE_BLINK in led_cap_list:
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color = Led.STATUS_LED_COLOR_ORANGE_BLINK
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elif color == Led.STATUS_LED_COLOR_ORANGE_BLINK and Led.STATUS_LED_COLOR_RED_BLINK in led_cap_list:
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color = Led.STATUS_LED_COLOR_RED_BLINK
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else:
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return False
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if Led.STATUS_LED_COLOR_GREEN_BLINK == color:
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self._trigger_blink(self.get_green_led_trigger())
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return self._set_led_blink_status(self.get_green_led_delay_on_path(), self.get_green_led_delay_off_path(), Led.LED_BLINK)
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elif Led.STATUS_LED_COLOR_RED_BLINK == color:
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self._trigger_blink(self.get_red_led_trigger())
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return self._set_led_blink_status(self.get_red_led_delay_on_path(), self.get_red_led_delay_off_path(), Led.LED_BLINK)
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elif Led.STATUS_LED_COLOR_ORANGE_BLINK == color:
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self._trigger_blink(self.get_orange_led_trigger())
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return self._set_led_blink_status(self.get_orange_led_delay_on_path(), self.get_orange_led_delay_off_path(), Led.LED_BLINK)
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else:
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return False
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def _stop_blink(self, led_cap_list):
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try:
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if Led.STATUS_LED_COLOR_GREEN_BLINK in led_cap_list:
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self._untrigger_blink(self.get_green_led_trigger())
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if Led.STATUS_LED_COLOR_RED_BLINK in led_cap_list:
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self._untrigger_blink(self.get_red_led_trigger())
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if Led.STATUS_LED_COLOR_ORANGE_BLINK in led_cap_list:
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self._untrigger_blink(self.get_orange_led_trigger())
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except Exception as e:
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return
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def _trigger_blink(self, blink_trigger_file):
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utils.write_file(blink_trigger_file, 'timer')
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def _untrigger_blink(self, blink_trigger_file):
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utils.write_file(blink_trigger_file, 'none')
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def _set_led_blink_status(self, delay_on_file, delay_off_file, value):
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if not self._wait_files_ready((delay_on_file, delay_off_file)):
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return False
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utils.write_file(delay_on_file, value)
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utils.write_file(delay_off_file, value)
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return True
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def _wait_files_ready(self, file_list):
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"""delay_off and delay_on sysfs will be available only if _trigger_blink is called. And once
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_trigger_blink is called, driver might need time to prepare delay_off and delay_on. So,
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need wait a few seconds here to make sure the sysfs is ready
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Args:
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file_list (list of str): files to be checked
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"""
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wait_time = 5.0
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initial_sleep = 0.01
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while wait_time > 0:
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if all([os.path.exists(x) for x in file_list]):
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return True
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time.sleep(initial_sleep)
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wait_time -= initial_sleep
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initial_sleep = initial_sleep * 2
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return False
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def get_status(self):
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led_cap_list = self.get_capability()
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if led_cap_list is None:
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return Led.STATUS_LED_COLOR_OFF
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try:
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blink_status = self._get_blink_status(led_cap_list)
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if blink_status is not None:
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return blink_status
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if utils.read_str_from_file(self.get_green_led_path()) != Led.LED_OFF:
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return Led.STATUS_LED_COLOR_GREEN
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if Led.STATUS_LED_COLOR_RED in led_cap_list:
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if utils.read_str_from_file(self.get_red_led_path()) != Led.LED_OFF:
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return Led.STATUS_LED_COLOR_RED
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if Led.STATUS_LED_COLOR_ORANGE in led_cap_list:
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if utils.read_str_from_file(self.get_orange_led_path()) != Led.LED_OFF:
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return Led.STATUS_LED_COLOR_RED
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except (ValueError, IOError) as e:
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raise RuntimeError("Failed to read led status due to {}".format(repr(e)))
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return Led.STATUS_LED_COLOR_OFF
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def _get_blink_status(self, led_cap_list):
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try:
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if Led.STATUS_LED_COLOR_GREEN_BLINK in led_cap_list:
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if self._is_led_blinking(self.get_green_led_delay_on_path(), self.get_green_led_delay_off_path()):
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return Led.STATUS_LED_COLOR_GREEN_BLINK
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if Led.STATUS_LED_COLOR_RED_BLINK in led_cap_list:
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if self._is_led_blinking(self.get_red_led_delay_on_path(), self.get_red_led_delay_off_path()):
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return Led.STATUS_LED_COLOR_RED_BLINK
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if Led.STATUS_LED_COLOR_ORANGE_BLINK in led_cap_list:
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if self._is_led_blinking(self.get_orange_led_delay_on_path(), self.get_orange_led_delay_off_path()):
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return Led.STATUS_LED_COLOR_ORANGE_BLINK
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except Exception as e:
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return None
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return None
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def _is_led_blinking(self, delay_on_file, delay_off_file):
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delay_on = utils.read_str_from_file(delay_on_file, default=Led.LED_OFF, log_func=None)
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delay_off = utils.read_str_from_file(delay_off_file, default=Led.LED_OFF, log_func=None)
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return delay_on != Led.LED_OFF and delay_off != Led.LED_OFF
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def get_capability(self):
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caps = utils.read_str_from_file(self.get_led_cap_path())
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return set(caps.split())
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def get_green_led_path(self):
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return os.path.join(Led.LED_PATH, 'led_{}_green'.format(self._led_id))
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def get_green_led_delay_off_path(self):
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return os.path.join(Led.LED_PATH, 'led_{}_green_delay_off'.format(self._led_id))
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def get_green_led_delay_on_path(self):
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return os.path.join(Led.LED_PATH, 'led_{}_green_delay_on'.format(self._led_id))
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def get_green_led_trigger(self):
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return os.path.join(Led.LED_PATH, 'led_{}_green_trigger'.format(self._led_id))
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def get_red_led_path(self):
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return os.path.join(Led.LED_PATH, 'led_{}_red'.format(self._led_id))
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def get_red_led_delay_off_path(self):
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return os.path.join(Led.LED_PATH, 'led_{}_red_delay_off'.format(self._led_id))
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def get_red_led_delay_on_path(self):
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return os.path.join(Led.LED_PATH, 'led_{}_red_delay_on'.format(self._led_id))
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def get_red_led_trigger(self):
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return os.path.join(Led.LED_PATH, 'led_{}_red_trigger'.format(self._led_id))
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def get_orange_led_path(self):
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return os.path.join(Led.LED_PATH, 'led_{}_orange'.format(self._led_id))
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def get_orange_led_delay_off_path(self):
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return os.path.join(Led.LED_PATH, 'led_{}_orange_delay_off'.format(self._led_id))
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def get_orange_led_delay_on_path(self):
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return os.path.join(Led.LED_PATH, 'led_{}_orange_delay_on'.format(self._led_id))
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def get_orange_led_trigger(self):
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return os.path.join(Led.LED_PATH, 'led_{}_orange_trigger'.format(self._led_id))
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def get_led_cap_path(self):
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return os.path.join(Led.LED_PATH, 'led_{}_capability'.format(self._led_id))
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class FanLed(Led):
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def __init__(self, index):
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if index is not None:
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self._led_id = 'fan{}'.format(index)
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else:
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self._led_id = 'fan'
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class PsuLed(Led):
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def __init__(self, index):
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if index is not None:
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self._led_id = 'psu{}'.format(index)
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else:
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self._led_id = 'psu'
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class SystemLed(Led):
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def __init__(self):
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self._led_id = 'status'
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class SharedLed(object):
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LED_PRIORITY = {
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Led.STATUS_LED_COLOR_RED: 0,
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Led.STATUS_LED_COLOR_GREEN: 1
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}
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def __init__(self, led):
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self._led = led
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self._virtual_leds = []
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def add_virtual_leds(self, led):
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self._virtual_leds.append(led)
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def update_status_led(self):
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target_color = Led.STATUS_LED_COLOR_GREEN
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for virtual_led in self._virtual_leds:
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try:
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if SharedLed.LED_PRIORITY[virtual_led.get_led_color()] < SharedLed.LED_PRIORITY[target_color]:
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target_color = virtual_led.get_led_color()
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except KeyError:
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return False
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return self._led.set_status(target_color)
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def get_status(self):
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return self._led.get_status()
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class ComponentFaultyIndicator(object):
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def __init__(self, shared_led):
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self._color = Led.STATUS_LED_COLOR_GREEN
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self._shared_led = shared_led
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self._shared_led.add_virtual_leds(self)
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def set_status(self, color):
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current_color = self._color
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self._color = color
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if self._shared_led.update_status_led():
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return True
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else:
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self._color = current_color
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return False
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def get_led_color(self):
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return self._color
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def get_status(self):
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return self._shared_led.get_status()
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