[mellanox] Implement PSU related APIs based on the new platform API

* Implement part of PSU related APIs including get_status(), get_presence()

Signed-off-by: Kevin Wang <[email protected]>

platform/mellanox/mlnx-platform-api.mk

@@ -0,0 +1,7 @@
+# SONIC_PLATFORM_API_PY2 package
+
+SONIC_PLATFORM_API_PY2 = mlnx_platform_api-1.0-py2-none-any.whl
+$(SONIC_PLATFORM_API_PY2)_SRC_PATH = $(PLATFORM_PATH)/mlnx-platform-api
+$(SONIC_PLATFORM_API_PY2)_PYTHON_VERSION = 2
+SONIC_PYTHON_WHEELS += $(SONIC_PLATFORM_API_PY2)
+

platform/mellanox/mlnx-platform-api/setup.py

@@ -0,0 +1,30 @@
+from setuptools import setup
+
+setup(
+ name='mlnx-platform-api',
+ version='1.0',
+ description='SONiC platform API implementation on Mellanox platform',
+ license='Apache 2.0',
+ author='SONiC Team',
+ author_email='[email protected]',
+ url='https:/Azure/sonic-buildimage',
+ maintainer='Kevin Wang',
+ maintainer_email='[email protected]',
+ packages=[
+ 'sonic_platform_api',
+ ],
+ classifiers=[
+ 'Development Status :: 3 - Alpha',
+ 'Environment :: Plugins',
+ 'Intended Audience :: Developers',
+ 'Intended Audience :: Information Technology',
+ 'Intended Audience :: System Administrators',
+ 'License :: OSI Approved :: Apache Software License',
+ 'Natural Language :: English',
+ 'Operating System :: POSIX :: Linux',
+ 'Programming Language :: Python :: 2.7',
+ 'Topic :: Utilities',
+ ],
+ keywords='sonic SONiC platform-api PLATFORM-API',
+)
+

platform/mellanox/mlnx-platform-api/sonic_platform_api/chassis.py

@@ -0,0 +1,28 @@
+#!/usr/bin/env python
+
+#############################################################################
+# Mellanox
+#
+# Module contains an implementation of SONiC Platform Base API and
+# provides the Chassis information which are available in the platform
+#
+#############################################################################
+
+import sys
+
+try:
+ from sonic_platform_base.chassis_base import ChassisBase
+ from sonic_platform_api.psu import Psu
+except ImportError as e:
+ raise ImportError (str(e) + "- required module not found")
+
+MLNX_NUM_PSU = 2
+
+class Chassis(ChassisBase):
+ """Platform-specific Chassis class"""
+ def __init__(self):
+ ChassisBase.__init__(self)
+ for index in range(MLNX_NUM_PSU):
+ psu = Psu(index)
+ self._psu_list.append(psu)
+

platform/mellanox/mlnx-platform-api/sonic_platform_api/psu.py

@@ -0,0 +1,70 @@
+#!/usr/bin/env python
+
+#############################################################################
+# Mellanox
+#
+# Module contains an implementation of SONiC Platform Base API and
+# provides the PSUs status which are available in the platform
+#
+#############################################################################
+
+import os.path
+
+try:
+ from sonic_platform_base.psu_base import PsuBase
+except ImportError as e:
+ raise ImportError (str(e) + "- required module not found")
+
+psu_list = []
+
+class Psu(PsuBase):
+ """Platform-specific Psu class"""
+ def __init__(self, psu_index):
+ global psu_list
+ PsuBase.__init__(self)
+ # PSU is 1-based on Mellanox platform
+ self.index = psu_index + 1
+ psu_list.append(psu_index)
+ self.psu_path = "/var/run/hw-management/thermal/"
+ self.psu_oper_status = "psu{}_pwr_status".format(self.index)
+ self.psu_presence = "psu{}_status".format(self.index)
+ if os.path.exists(os.path.join(self.psu_path, self.psu_presence)):
+ self.presence_file_exists = True
+ else:
+ self.presence_file_exists = False
+
+ def get_status(self):
+ """
+ Retrieves the operational status of power supply unit (PSU) defined
+
+ Returns:
+ bool: True if PSU is operating properly, False if not
+ """
+ status = 0
+ try:
+ with open(os.path.join(self.psu_path, self.psu_oper_status), 'r') as power_status:
+ status = int(power_status.read())
+ except (ValueError, IOError):
+ status = 0
+
+ return status == 1
+
+ def get_presence(self):
+ """
+ Retrieves the presence status of power supply unit (PSU) defined
+
+ Returns:
+ bool: True if PSU is present, False if not
+ """
+ status = 0
+ if self.presence_file_exists:
+ try:
+ with open(os.path.join(self.psu_path, self.psu_presence), 'r') as presence_status:
+ status = int(presence_status.read())
+ except (ValueError, IOError):
+ status = 0
+ else:
+ status = self.index in psu_list
+
+ return status == 1
+

platform/mellanox/rules.mk

@@ -3,6 +3,7 @@ include $(PLATFORM_PATH)/fw.mk
 include $(PLATFORM_PATH)/mft.mk
 include $(PLATFORM_PATH)/mlnx-sai.mk
 include $(PLATFORM_PATH)/hw-management.mk
+include $(PLATFORM_PATH)/mlnx-platform-api.mk
 include $(PLATFORM_PATH)/docker-syncd-mlnx.mk
 include $(PLATFORM_PATH)/docker-syncd-mlnx-rpc.mk
 include $(PLATFORM_PATH)/docker-orchagent-mlnx.mk

rules/docker-platform-monitor.mk

@@ -5,6 +5,7 @@ $(DOCKER_PLATFORM_MONITOR)_PATH = $(DOCKERS_PATH)/docker-platform-monitor
 $(DOCKER_PLATFORM_MONITOR)_DEPENDS += $(LIBSWSSCOMMON) $(PYTHON_SWSSCOMMON) $(SONIC_LEDD) $(SONIC_XCVRD)
 $(DOCKER_PLATFORM_MONITOR)_PYTHON_WHEELS += $(SONIC_PLATFORM_COMMON_PY2)
 $(DOCKER_PLATFORM_MONITOR)_PYTHON_WHEELS += $(SWSSSDK_PY2)
+$(DOCKER_PLATFORM_MONITOR)_PYTHON_WHEELS += $(SONIC_PLATFORM_API_PY2)
 $(DOCKER_PLATFORM_MONITOR)_LOAD_DOCKERS = $(DOCKER_CONFIG_ENGINE)
 
 SONIC_DOCKER_IMAGES += $(DOCKER_PLATFORM_MONITOR)