89 lines
2.7 KiB
Python
89 lines
2.7 KiB
Python
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#!/usr/bin/env python
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import os.path
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import subprocess
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import sys
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import re
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try:
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from sonic_psu.psu_base import PsuBase
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except ImportError as e:
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raise ImportError (str(e) + "- required module not found")
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class PsuUtil(PsuBase):
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"""Platform-specific PSUutil class"""
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def __init__(self):
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self.ipmi_sensor = "ipmitool sensor"
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PsuBase.__init__(self)
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def run_command(self, command):
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proc = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE)
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(out, err) = proc.communicate()
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if proc.returncode != 0:
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sys.exit(proc.returncode)
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return out
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def find_value(self, grep_string):
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result = re.search(".+\| (0x\d{2})\d{2}\|.+", grep_string)
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if result:
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return result.group(1)
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else:
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return result
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def get_num_psus(self):
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"""
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Retrieves the number of PSUs available on the device
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:return: An integer, the number of PSUs available on the device
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"""
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return 2
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def get_psu_status(self, index):
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"""
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Retrieves the oprational status of power supply unit (PSU) defined
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by 1-based index <index>
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:param index: An integer, 1-based index of the PSU of which to query status
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:return: Boolean, True if PSU is operating properly, False if PSU is faulty
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"""
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if index is None:
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return False
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grep_key = "PSUL_Status" if index == 1 else "PSUR_Status"
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grep_string = self.run_command(self.ipmi_sensor + ' | grep '+ grep_key)
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status_byte = self.find_value(grep_string)
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if status_byte is None:
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return False
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failure_detected = (int(status_byte, 16) >> 1) & 1
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input_lost = (int(status_byte, 16) >> 3) & 1
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if failure_detected or input_lost:
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return False
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else:
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return True
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def get_psu_presence(self, index):
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"""
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Retrieves the presence status of power supply unit (PSU) defined
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by 1-based index <index>
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:param index: An integer, 1-based index of the PSU of which to query status
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:return: Boolean, True if PSU is plugged, False if not
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"""
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if index is None:
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return False
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grep_key = "PSUL_Status" if index == 1 else "PSUR_Status"
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grep_string = self.run_command(self.ipmi_sensor + ' | grep '+ grep_key)
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status_byte = self.find_value(grep_string)
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if status_byte is None:
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return False
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presence = ( int(status_byte, 16) >> 0 ) & 1
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if presence:
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return True
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else:
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return False
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