202 lines
6.8 KiB
Python
202 lines
6.8 KiB
Python
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import os
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class Led(object):
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STATUS_LED_COLOR_GREEN = 'green'
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STATUS_LED_COLOR_RED = 'red'
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STATUS_LED_COLOR_ORANGE = 'orange'
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STATUS_LED_COLOR_OFF = 'off'
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LED_ON = '1'
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LED_OFF = '0'
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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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if color == Led.STATUS_LED_COLOR_GREEN:
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with open(self.get_green_led_path(), 'w') as led:
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led.write(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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with open(led_path, 'w') as led:
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led.write(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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with open(self.get_green_led_path(), 'w') as led:
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led.write(Led.LED_OFF)
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if Led.STATUS_LED_COLOR_RED in led_cap_list:
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with open(self.get_red_led_path(), 'w') as led:
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led.write(Led.LED_OFF)
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if Led.STATUS_LED_COLOR_ORANGE in led_cap_list:
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with open(self.get_orange_led_path(), 'w') as led:
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led.write(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 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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with open(self.get_green_led_path(), 'r') as led:
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if Led.LED_OFF != led.read().rstrip('\n'):
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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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with open(self.get_red_led_path(), 'r') as led:
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if Led.LED_OFF != led.read().rstrip('\n'):
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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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with open(self.get_orange_led_path(), 'r') as led:
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if Led.LED_OFF != led.read().rstrip('\n'):
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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_capability(self):
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cap_list = None
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try:
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with open(self.get_led_cap_path(), 'r') as led_cap:
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caps = led_cap.read()
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cap_list = caps.split()
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except (ValueError, IOError):
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pass
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return cap_list
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def get_green_led_path(self):
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pass
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def get_red_led_path(self):
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pass
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def get_orange_led_path(self):
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pass
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def get_led_cap_path(self):
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pass
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class FanLed(Led):
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LED_PATH = "/var/run/hw-management/led/"
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def __init__(self, index):
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if index is not None:
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self._green_led_path = os.path.join(Led.LED_PATH, "led_fan{}_green".format(index))
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self._red_led_path = os.path.join(Led.LED_PATH, "led_fan{}_red".format(index))
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self._orange_led_path = os.path.join(Led.LED_PATH, "led_fan{}_orange".format(index))
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self._led_cap_path = os.path.join(Led.LED_PATH, "led_fan{}_capability".format(index))
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else:
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self._green_led_path = os.path.join(Led.LED_PATH, "led_fan_green")
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self._red_led_path = os.path.join(Led.LED_PATH, "led_fan_red")
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self._orange_led_path = os.path.join(Led.LED_PATH, "led_fan_orange")
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self._led_cap_path = os.path.join(Led.LED_PATH, "led_fan_capability")
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self.set_status(Led.STATUS_LED_COLOR_GREEN)
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def get_green_led_path(self):
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return self._green_led_path
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def get_red_led_path(self):
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return self._red_led_path
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def get_orange_led_path(self):
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return self._orange_led_path
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def get_led_cap_path(self):
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return self._led_cap_path
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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._green_led_path = os.path.join(Led.LED_PATH, "led_psu{}_green".format(index))
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self._red_led_path = os.path.join(Led.LED_PATH, "led_psu{}_red".format(index))
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self._orange_led_path = os.path.join(Led.LED_PATH, "led_psu{}_orange".format(index))
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self._led_cap_path = os.path.join(Led.LED_PATH, "led_psu{}_capability".format(index))
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else:
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self._green_led_path = os.path.join(Led.LED_PATH, "led_psu_green")
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self._red_led_path = os.path.join(Led.LED_PATH, "led_psu_red")
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self._orange_led_path = os.path.join(Led.LED_PATH, "led_psu_orange")
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self._led_cap_path = os.path.join(Led.LED_PATH, "led_psu_capability")
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self.set_status(Led.STATUS_LED_COLOR_GREEN)
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def get_green_led_path(self):
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return self._green_led_path
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def get_red_led_path(self):
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return self._red_led_path
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def get_orange_led_path(self):
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return self._orange_led_path
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def get_led_cap_path(self):
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return self._led_cap_path
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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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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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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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self._color = color
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return self._shared_led.update_status_led()
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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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