73 lines
2.0 KiB
Python
73 lines
2.0 KiB
Python
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#
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# fanutil.py
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# Platform-specific FAN status interface for SONiC
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#
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import subprocess
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import sys
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SENSORS_CMD = "docker exec -i pmon /usr/bin/sensors"
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DOCKER_SENSORS_CMD = "/usr/bin/sensors"
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try:
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from sonic_fan.fan_base import FanBase
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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 FanUtil(FanBase):
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"""Platform-specific FanUtil class"""
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_fan_mapping = {
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1 : '0',
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2 : '1',
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3 : '2'
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}
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def __init__(self):
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FanBase.__init__(self)
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def isDockerEnv(self):
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num_docker = open('/proc/self/cgroup', 'r').read().count(":/docker")
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if num_docker > 0:
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return True
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def get_num_fans(self):
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N3248TE_MAX_FANTRAYS = 3
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return N3248TE_MAX_FANTRAYS
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def get_presence(self, idx):
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sysfs_path = "/sys/devices/platform/dell-n3248te-cpld.0/fan" + self._fan_mapping[idx] + "_prs"
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return int(open(sysfs_path).read(), 16)
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def get_direction(self, idx):
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sysfs_path = "/sys/devices/platform/dell-n3248te-cpld.0/fan" + self._fan_mapping[idx] + "_dir"
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return open(sysfs_path).read()
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def get_speed(self, idx):
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dockerenv = self.isDockerEnv()
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if not dockerenv:
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status, cmd_output = subprocess.getstatusoutput(SENSORS_CMD)
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else :
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status, cmd_output = subprocess.getstatusoutput(DOCKER_SENSORS_CMD)
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if status:
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print('Failed to execute sensors command')
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sys.exit(0)
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fan_id = 'Fan ' + str(idx)
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found = False
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for line in cmd_output.splitlines():
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if line.startswith('emc2305-i2c-7-2c'):
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found = True
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if found and line.startswith(fan_id):
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return line.split()[3]
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return 0.0
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def get_status(self, idx):
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sysfs_path = "/sys/devices/platform/dell-n3248te-cpld.0/fan" + self._fan_mapping[idx] + "_prs"
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return int(open(sysfs_path).read(), 16)
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def set_speed(self, idx):
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return False
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