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[device] Refactor led plugins for more Arista platforms #1809

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Jun 24, 2018
Merged

[device] Refactor led plugins for more Arista platforms #1809

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98 changes: 3 additions & 95 deletions device/arista/x86_64-arista_7050_qx32/plugins/led_control.py
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Original file line number Diff line number Diff line change
@@ -1,98 +1,6 @@
#!/usr/bin/env python
#
# led_control.py
#
# Platform-specific LED control functionality for SONiC
#

try:
from sonic_led.led_control_base import LedControlBase
import swsssdk
import arista.utils.sonic_leds as arista_leds
except ImportError, e:
raise ImportError (str(e) + " - required module not found")


class LedControl(LedControlBase):
"""Platform specific LED control class"""
PORT_TABLE_PREFIX = "PORT_TABLE:"

SONIC_PORT_NAME_PREFIX = "Ethernet"

LED_SYSFS_PATH_BREAKOUT_CAPABLE = "/sys/class/leds/qsfp{0}_{1}/brightness"
LED_SYSFS_PATH_NO_BREAKOUT = "/sys/class/leds/qsfp{0}/brightness"

QSFP_BREAKOUT_START_IDX = 1
QSFP_BREAKOUT_END_IDX = 24
QSFP_NO_BREAKOUT_START_IDX = 25
QSFP_NO_BREAKOUT_END_IDX = 32

LED_COLOR_OFF = 0
LED_COLOR_GREEN = 1
LED_COLOR_YELLOW = 2

# Helper method to map SONiC port name to Arista QSFP index
def _port_name_to_qsfp_index(self, port_name):
# Strip "Ethernet" off port name
if not port_name.startswith(self.SONIC_PORT_NAME_PREFIX):
return -1

sonic_port_num = int(port_name[len(self.SONIC_PORT_NAME_PREFIX):])

swss = swsssdk.SonicV2Connector()
swss.connect(swss.APPL_DB)

lanes = swss.get(swss.APPL_DB, self.PORT_TABLE_PREFIX + port_name, 'lanes')

# SONiC port nums are 0-based and increment by 4
# Arista QSFP indices are 1-based and increment by 1
return (((sonic_port_num/4) + 1), sonic_port_num%4, len(lanes.split(',')))

# Concrete implementation of port_link_state_change() method
def port_link_state_change(self, port, state):
qsfp_index, lane_index, lanes = self._port_name_to_qsfp_index(port)

# Ignore invalid QSFP indices
if qsfp_index <= 0 or lanes <= 0 or lanes > 4:
return

# QSFP indices 1-24 are breakout-capable and have four LEDs, and each LED indicate one lane.
# whereas indices 25-32 are not breakout-capable, and only have one
if qsfp_index <= self.QSFP_BREAKOUT_END_IDX:
# assuming 40G, then we need to control four lanes
led_sysfs_paths = [ self.LED_SYSFS_PATH_BREAKOUT_CAPABLE.format(qsfp_index, i) for i in range(lane_index + 1, lane_index + 1 + lanes) ]
else:
led_sysfs_paths = [ self.LED_SYSFS_PATH_NO_BREAKOUT.format(qsfp_index) ]

for led_sysfs_path in led_sysfs_paths:
led_file = open(led_sysfs_path, "w")

if state == "up":
led_file.write("%d" % self.LED_COLOR_GREEN)
else:
led_file.write("%d" % self.LED_COLOR_OFF)

led_file.close()

# Constructor
def __init__(self):
# Initialize all front-panel status LEDs to green
with open("/sys/class/leds/status/brightness", "w") as f:
f.write("1")
with open("/sys/class/leds/fan_status/brightness", "w") as f:
f.write("1")
with open("/sys/class/leds/psu1/brightness", "w") as f:
f.write("1")
with open("/sys/class/leds/psu2/brightness", "w") as f:
f.write("1")

# Initialize: Turn all front panel QSFP LEDs off
for qsfp_index in range(self.QSFP_BREAKOUT_START_IDX, self.QSFP_BREAKOUT_END_IDX + 1):
for lane in range(1, 5):
led_sysfs_path = self.LED_SYSFS_PATH_BREAKOUT_CAPABLE.format(qsfp_index, lane)
with open(led_sysfs_path, 'w') as led_file:
led_file.write("%d" % self.LED_COLOR_OFF)
raise ImportError (str(e) + "- required module not found")

for qsfp_index in range(self.QSFP_NO_BREAKOUT_START_IDX, self.QSFP_NO_BREAKOUT_END_IDX + 1):
led_sysfs_path = self.LED_SYSFS_PATH_NO_BREAKOUT.format(qsfp_index)
with open(led_sysfs_path, 'w') as led_file:
led_file.write("%d" % self.LED_COLOR_OFF)
LedControl = arista_leds.getLedControl()
93 changes: 3 additions & 90 deletions device/arista/x86_64-arista_7050_qx32s/plugins/led_control.py
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,93 +1,6 @@
#!/usr/bin/env python
#
# led_control.py
#
# Platform-specific LED control functionality for SONiC
#

try:
from sonic_led.led_control_base import LedControlBase
import arista.utils.sonic_leds as arista_leds
except ImportError, e:
raise ImportError (str(e) + " - required module not found")


class LedControl(LedControlBase):
"""Platform specific LED control class"""

SONIC_PORT_NAME_PREFIX = "Ethernet"

LED_SYSFS_PATH_BREAKOUT_CAPABLE = "/sys/class/leds/qsfp{0}_{1}/brightness"
LED_SYSFS_PATH_NO_BREAKOUT = "/sys/class/leds/qsfp{0}/brightness"

QSFP_BREAKOUT_START_IDX = 1
QSFP_BREAKOUT_END_IDX = 24
QSFP_NO_BREAKOUT_START_IDX = 25
QSFP_NO_BREAKOUT_END_IDX = 32

LED_QSFP_OFFSET = 4

LED_COLOR_OFF = 0
LED_COLOR_GREEN = 1
LED_COLOR_YELLOW = 2

# Helper method to map SONiC port name to Arista QSFP index
def _port_name_to_qsfp_index(self, port_name):
# Strip "Ethernet" off port name
if not port_name.startswith(self.SONIC_PORT_NAME_PREFIX):
return -1

sonic_port_num = int(port_name[len(self.SONIC_PORT_NAME_PREFIX):])

# SONiC port nums are 0-based and increment by 4
# Arista QSFP indices are 1-based and increment by 1
return ((sonic_port_num/4) + 1)

# Concrete implementation of port_link_state_change() method
def port_link_state_change(self, port, state):
qsfp_index = self._port_name_to_qsfp_index(port)

# Ignore invalid QSFP indices
if qsfp_index <= 0:
return

# QSFP indices 1-24 are breakout-capable and have four LEDs, and each LED indicate one lane.
# whereas indices 25-32 are not breakout-capable, and only have one
if qsfp_index <= self.QSFP_BREAKOUT_END_IDX:
# assuming 40G, then we need to control four lanes
led_sysfs_paths = [ self.LED_SYSFS_PATH_BREAKOUT_CAPABLE.format(qsfp_index + self.LED_QSFP_OFFSET, i) for i in range(1, 5) ]
else:
led_sysfs_paths = [ self.LED_SYSFS_PATH_NO_BREAKOUT.format(qsfp_index + self.LED_QSFP_OFFSET) ]

for led_sysfs_path in led_sysfs_paths:
led_file = open(led_sysfs_path, "w")

if state == "up":
led_file.write("%d" % self.LED_COLOR_GREEN)
else:
led_file.write("%d" % self.LED_COLOR_OFF)

led_file.close()

# Constructor
def __init__(self):
# Initialize all front-panel status LEDs to green
with open("/sys/class/leds/status/brightness", "w") as f:
f.write("1")
with open("/sys/class/leds/fan_status/brightness", "w") as f:
f.write("1")
with open("/sys/class/leds/psu1/brightness", "w") as f:
f.write("1")
with open("/sys/class/leds/psu2/brightness", "w") as f:
f.write("1")

# Initialize: Turn all front panel QSFP LEDs off
for qsfp_index in range(self.QSFP_BREAKOUT_START_IDX, self.QSFP_BREAKOUT_END_IDX + 1):
for lane in range(1, 5):
led_sysfs_path = self.LED_SYSFS_PATH_BREAKOUT_CAPABLE.format(qsfp_index + self.LED_QSFP_OFFSET, lane)
with open(led_sysfs_path, 'w') as led_file:
led_file.write("%d" % self.LED_COLOR_OFF)
raise ImportError (str(e) + "- required module not found")

for qsfp_index in range(self.QSFP_NO_BREAKOUT_START_IDX, self.QSFP_NO_BREAKOUT_END_IDX + 1):
led_sysfs_path = self.LED_SYSFS_PATH_NO_BREAKOUT.format(qsfp_index + self.LED_QSFP_OFFSET)
with open(led_sysfs_path, 'w') as led_file:
led_file.write("%d" % self.LED_COLOR_OFF)
LedControl = arista_leds.getLedControl()