[BFN] Extended Fans platform plugin implementation

platform/barefoot/sonic-platform-modules-bfn-montara/sonic_platform/fan.py

@@ -0,0 +1,108 @@
+try:
+    from sonic_platform.platform_thrift_client import thrift_try
+    from sonic_platform_base.fan_base import FanBase
+except ImportError as e:
+    raise ImportError (str(e) + "- required module not found")
+
+def _fan_info_get(fan_num, cb, default=None):
+    def get_data(client):
+        return client.pltfm_mgr.pltfm_mgr_fan_info_get(fan_num)
+    fan_info = thrift_try(get_data)
+    if fan_num == fan_info.fan_num:
+        return cb(fan_info)
+    if default is None:
+        raise LookupError
+    return default
+
+# Fan -> FanBase -> DeviceBase
+class Fan(FanBase):
+    def __init__(self, num):
+        self.__num = num
+
+    # FanBase interface methods:
+    # returns speed in percents
+    def get_speed(self):
+        def cb(info): return info.percent
+        return _fan_info_get(self.__num, cb, 0)
+
+    def set_speed(self, percent):
+        def set_fan_speed(client):
+            return client.pltfm_mgr.pltfm_mgr_fan_speed_set(self.__num, percent)
+        return thrift_try(set_fan_speed)
+
+    # DeviceBase interface methods:
+    def get_name(self):
+        return f"counter-rotating-fan-{self.__num}"
+
+    def get_presence(self):
+        return _fan_info_get(self.__num, lambda _: True, False)
+
+    def get_position_in_parent(self):
+        return self.__num
+
+    def is_replaceable(self):
+        return True
+
+    def get_status(self):
+        return True
+
+    def get_model(self):
+        """
+        Retrieves the part number of the fan drawer
+        Returns:
+            string: Part number of fan drawer
+        """
+        return 'N/A'
+
+    def get_direction(self):
+        """
+        Retrieves the direction of fan
+
+        Returns:
+            A string, either FAN_DIRECTION_INTAKE or FAN_DIRECTION_EXHAUST
+            depending on fan direction
+        """
+        return 'N/A'
+
+    def get_target_speed(self):
+        """
+        Retrieves the target (expected) speed of the fan
+        Returns:
+            An integer, the percentage of full fan speed, in the range 0 (off)
+                 to 100 (full speed)
+        """
+        return 0
+
+    def get_speed_tolerance(self):
+        """
+        Retrieves the speed tolerance of the fan
+
+        Returns:
+            An integer, the percentage of variance from target speed which is
+                 considered tolerable
+        """
+        return 0
+
+    def get_serial(self):
+        """
+        Retrieves the serial number of the device
+
+        Returns:
+            string: Serial number of device
+        """
+        return 'N/A'
+
+    def set_status_led(self, color):
+        """
+        Sets the state of the fan module status LED
+
+        Args:
+            color: A string representing the color with which to set the
+                   fan module status LED
+
+        Returns:
+            bool: True if status LED state is set successfully, False if not
+        """
+        # Fan tray status LED controlled by BMC
+        # Should return True to avoid thermalctld alarm
+        return False

platform/barefoot/sonic-platform-modules-bfn-montara/sonic_platform/fan_drawer.py

@@ -2,21 +2,12 @@
     from sonic_platform.platform_thrift_client import thrift_try
     from sonic_platform_base.fan_drawer_base import FanDrawerBase
     from sonic_platform_base.fan_base import FanBase
+    from fan import Fan
 except ImportError as e:
     raise ImportError (str(e) + "- required module not found")
 
 _MAX_FAN = 10
 
-def _fan_info_get(fan_num, cb, default=None):
-    def get_data(client):
-        return client.pltfm_mgr.pltfm_mgr_fan_info_get(fan_num)
-    fan_info = thrift_try(get_data)
-    if fan_num == fan_info.fan_num:
-        return cb(fan_info)
-    if default is None:
-        raise LookupError
-    return default
-
 def _fan_info_get_all():
     for fan_num in range(1, _MAX_FAN + 1):
         def get_data(client, fan_num=fan_num):
@@ -25,38 +16,6 @@ def get_data(client, fan_num=fan_num):
         if fan_info.fan_num == fan_num:
             yield fan_info
 
-# Fan -> FanBase -> DeviceBase
-class Fan(FanBase):
-    def __init__(self, num):
-        self.__num = num
-
-    # FanBase interface methods:
-    # returns speed in percents
-    def get_speed(self):
-        def cb(info): return info.percent
-        return _fan_info_get(self.__num, cb, 0)
-
-    def set_speed(self, percent):
-        def set_fan_speed(client):
-            return client.pltfm_mgr.pltfm_mgr_fan_speed_set(self.__num, percent)
-        return thrift_try(set_fan_speed)
-
-    # DeviceBase interface methods:
-    def get_name(self):
-        return f"counter-rotating-fan-{self.__num}"
-
-    def get_presence(self):
-        return _fan_info_get(self.__num, lambda _: True, False)
-
-    def get_position_in_parent(self):
-        return self.__num
-
-    def is_replaceable(self):
-        return True
-
-    def get_status(self):
-        return True
-
 # FanDrawer -> FanDrawerBase -> DeviceBase
 class FanDrawer(FanDrawerBase):
     def __init__(self, fantray_index):