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451 lines
14 KiB
Python
451 lines
14 KiB
Python
#
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# Copyright (c) 2019-2022 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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#############################################################################
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# Mellanox
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#
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# Module contains an implementation of SONiC Platform Base API and
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# provides the PSUs status which are available in the platform
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#
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#############################################################################
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try:
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import os
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from sonic_platform_base.psu_base import PsuBase
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from sonic_py_common.logger import Logger
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from .led import PsuLed, SharedLed, ComponentFaultyIndicator
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from . import utils
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from .vpd_parser import VpdParser
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except ImportError as e:
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raise ImportError (str(e) + "- required module not found")
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# Global logger class instance
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logger = Logger()
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PSU_PATH = '/var/run/hw-management/'
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class FixedPsu(PsuBase):
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def __init__(self, psu_index):
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super(FixedPsu, self).__init__()
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self.index = psu_index + 1
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self._name = "PSU {}".format(self.index)
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self.psu_oper_status = os.path.join(PSU_PATH, "thermal/psu{}_pwr_status".format(self.index))
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self._led = None
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def get_name(self):
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return self._name
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def get_model(self):
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return 'N/A'
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def get_serial(self):
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return 'N/A'
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def get_revision(self):
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return 'N/A'
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def get_powergood_status(self):
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"""
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Retrieves the operational status of power supply unit (PSU) defined
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Returns:
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bool: True if PSU is operating properly, False if not
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"""
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return utils.read_int_from_file(self.psu_oper_status) == 1
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def get_presence(self):
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"""
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Retrieves the presence status of power supply unit (PSU) defined
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Returns:
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bool: True if PSU is present, False if not
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"""
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return True
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def get_voltage(self):
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"""
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Retrieves current PSU voltage output
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Returns:
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A float number, the output voltage in volts,
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e.g. 12.1
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"""
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return None
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def get_current(self):
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"""
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Retrieves present electric current supplied by PSU
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Returns:
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A float number, the electric current in amperes, e.g 15.4
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"""
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return None
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def get_power(self):
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"""
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Retrieves current energy supplied by PSU
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Returns:
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A float number, the power in watts, e.g. 302.6
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"""
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return None
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@property
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def led(self):
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if not self._led:
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self._led = PsuLed(self.index)
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return self._led
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def set_status_led(self, color):
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"""
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Sets the state of the PSU status LED
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Args:
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color: A string representing the color with which to set the
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PSU status LED
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Returns:
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bool: True if status LED state is set successfully, False if not
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Notes:
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Only one led for all PSUs.
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"""
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return self.led.set_status(color)
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def get_status_led(self):
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"""
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Gets the state of the PSU status LED
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Returns:
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A string, one of the predefined STATUS_LED_COLOR_* strings above
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"""
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return self.led.get_status()
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def get_power_available_status(self):
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"""
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Gets the power available status
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Returns:
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True if power is present and power on.
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False and "absence of PSU" if power is not present.
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False and "absence of power" if power is present but not power on.
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"""
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if not self.get_presence():
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return False, "absence of PSU"
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elif not self.get_powergood_status():
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return False, "absence of power"
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else:
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return True, ""
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def get_position_in_parent(self):
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"""
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Retrieves 1-based relative physical position in parent device
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Returns:
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integer: The 1-based relative physical position in parent device
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"""
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return self.index
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def is_replaceable(self):
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"""
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Indicate whether this device is replaceable.
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Returns:
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bool: True if it is replaceable.
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"""
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return False
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def get_temperature(self):
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"""
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Retrieves current temperature reading from PSU
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Returns:
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A float number of current temperature in Celsius up to nearest thousandth
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of one degree Celsius, e.g. 30.125
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"""
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return None
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def get_temperature_high_threshold(self):
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"""
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Retrieves the high threshold temperature of PSU
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Returns:
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A float number, the high threshold temperature of PSU in Celsius
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up to nearest thousandth of one degree Celsius, e.g. 30.125
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"""
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return None
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class Psu(FixedPsu):
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"""Platform-specific Psu class"""
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PSU_CURRENT = "power/psu{}_curr"
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PSU_POWER = "power/psu{}_power"
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PSU_VPD = "eeprom/psu{}_vpd"
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shared_led = None
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def __init__(self, psu_index):
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super(Psu, self).__init__(psu_index)
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self._psu_voltage = None
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self._psu_voltage_min = None
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self._psu_voltage_max = None
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self._psu_voltage_capability = None
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self.psu_current = os.path.join(PSU_PATH, self.PSU_CURRENT.format(self.index))
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self.psu_power = os.path.join(PSU_PATH, self.PSU_POWER.format(self.index))
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self.psu_power_max = self.psu_power + "_max"
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self.psu_presence = os.path.join(PSU_PATH, "thermal/psu{}_status".format(self.index))
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self.psu_temp = os.path.join(PSU_PATH, 'thermal/psu{}_temp'.format(self.index))
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self.psu_temp_threshold = os.path.join(PSU_PATH, 'thermal/psu{}_temp_max'.format(self.index))
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from .fan import PsuFan
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self._fan_list.append(PsuFan(psu_index, 1, self))
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self.vpd_parser = VpdParser(os.path.join(PSU_PATH, self.PSU_VPD.format(self.index)))
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# initialize thermal for PSU
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from .thermal import initialize_psu_thermal
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self._thermal_list = initialize_psu_thermal(psu_index, self.get_power_available_status)
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@property
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def psu_voltage(self):
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if not self._psu_voltage:
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psu_voltage_out = os.path.join(PSU_PATH, "power/psu{}_volt_out2".format(self.index))
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if os.path.exists(psu_voltage_out):
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self._psu_voltage = psu_voltage_out
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else:
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psu_voltage_out = os.path.join(PSU_PATH, "power/psu{}_volt".format(self.index))
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if os.path.exists(psu_voltage_out):
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self._psu_voltage = psu_voltage_out
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return self._psu_voltage
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@property
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def psu_voltage_min(self):
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if not self._psu_voltage_min:
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psu_voltage = self.psu_voltage
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if psu_voltage:
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self._psu_voltage_min = psu_voltage + "_min"
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return self._psu_voltage_min
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@property
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def psu_voltage_max(self):
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if not self._psu_voltage_max:
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psu_voltage = self.psu_voltage
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if psu_voltage:
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self._psu_voltage_max = psu_voltage + "_max"
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return self._psu_voltage_max
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@property
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def psu_voltage_capability(self):
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if not self._psu_voltage_capability:
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psu_voltage = self.psu_voltage
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if psu_voltage:
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self._psu_voltage_capability = psu_voltage + "_capability"
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return self._psu_voltage_capability
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def get_model(self):
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"""
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Retrieves the model number (or part number) of the device
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Returns:
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string: Model/part number of device
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"""
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return self.vpd_parser.get_model()
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def get_serial(self):
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"""
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Retrieves the serial number of the device
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Returns:
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string: Serial number of device
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"""
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return self.vpd_parser.get_serial()
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def get_revision(self):
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"""
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Retrieves the hardware revision of the device
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Returns:
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string: Revision value of device
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"""
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return self.vpd_parser.get_revision()
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def get_presence(self):
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"""
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Retrieves the presence status of power supply unit (PSU) defined
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Returns:
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bool: True if PSU is present, False if not
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"""
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return utils.read_int_from_file(self.psu_presence) == 1
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def get_voltage(self):
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"""
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Retrieves current PSU voltage output
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Returns:
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A float number, the output voltage in volts,
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e.g. 12.1
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"""
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if self.get_powergood_status() and self.psu_voltage:
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# TODO: should we put log_func=None here? If not do this, when a PSU is back to power, some PSU related
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# sysfs may not ready, read_int_from_file would encounter exception and log an error.
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voltage = utils.read_int_from_file(self.psu_voltage, log_func=logger.log_info)
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return float(voltage) / 1000
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return None
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def get_current(self):
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"""
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Retrieves present electric current supplied by PSU
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Returns:
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A float number, the electric current in amperes, e.g 15.4
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"""
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if self.get_powergood_status():
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amperes = utils.read_int_from_file(self.psu_current, log_func=logger.log_info)
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return float(amperes) / 1000
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return None
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def get_power(self):
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"""
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Retrieves current energy supplied by PSU
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Returns:
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A float number, the power in watts, e.g. 302.6
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"""
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if self.get_powergood_status():
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power = utils.read_int_from_file(self.psu_power, log_func=logger.log_info)
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return float(power) / 1000000
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return None
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@classmethod
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def get_shared_led(cls):
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if not cls.shared_led:
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cls.shared_led = SharedLed(PsuLed(None))
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return cls.shared_led
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@property
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def led(self):
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if not self._led:
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self._led = ComponentFaultyIndicator(Psu.get_shared_led())
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return self._led
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def get_status_led(self):
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"""
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Gets the state of the PSU status LED
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Returns:
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A string, one of the predefined STATUS_LED_COLOR_* strings above
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"""
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return Psu.get_shared_led().get_status()
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def is_replaceable(self):
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"""
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Indicate whether this device is replaceable.
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Returns:
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bool: True if it is replaceable.
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"""
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return True
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def get_temperature(self):
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"""
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Retrieves current temperature reading from PSU
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Returns:
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A float number of current temperature in Celsius up to nearest thousandth
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of one degree Celsius, e.g. 30.125
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"""
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if self.get_powergood_status():
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temp = utils.read_int_from_file(self.psu_temp, log_func=logger.log_info)
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return float(temp) / 1000
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return None
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def get_temperature_high_threshold(self):
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"""
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Retrieves the high threshold temperature of PSU
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Returns:
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A float number, the high threshold temperature of PSU in Celsius
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up to nearest thousandth of one degree Celsius, e.g. 30.125
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"""
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if self.get_powergood_status():
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temp_threshold = utils.read_int_from_file(self.psu_temp_threshold, log_func=logger.log_info)
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return float(temp_threshold) / 1000
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return None
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def get_voltage_high_threshold(self):
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"""
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Retrieves the high threshold PSU voltage output
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Returns:
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A float number, the high threshold output voltage in volts,
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e.g. 12.1
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Notes:
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The thresholds of voltage are not supported on all platforms.
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So we have to check capability first.
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"""
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if self.psu_voltage_capability and self.psu_voltage_max and self.get_powergood_status():
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capability = utils.read_str_from_file(self.psu_voltage_capability)
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if 'max' in capability:
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max_voltage = utils.read_int_from_file(self.psu_voltage_max, log_func=logger.log_info)
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return float(max_voltage) / 1000
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return None
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def get_voltage_low_threshold(self):
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"""
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Retrieves the low threshold PSU voltage output
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Returns:
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A float number, the low threshold output voltage in volts,
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e.g. 12.1
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Notes:
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The thresholds of voltage are not supported on all platforms.
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So we have to check capability first.
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"""
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if self.psu_voltage_capability and self.psu_voltage_min and self.get_powergood_status():
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capability = utils.read_str_from_file(self.psu_voltage_capability)
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if 'min' in capability:
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min_voltage = utils.read_int_from_file(self.psu_voltage_min, log_func=logger.log_info)
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return float(min_voltage) / 1000
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return None
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def get_maximum_supplied_power(self):
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"""
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Retrieves the maximum supplied power by PSU
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Returns:
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A float number, the maximum power output in Watts.
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e.g. 1200.1
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"""
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if self.psu_power_max and self.get_powergood_status():
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power_max = utils.read_int_from_file(self.psu_power_max, log_func=logger.log_info)
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return float(power_max) / 1000000
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else:
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return None
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