Addition of host-resource subagents to return supported OIDs in HOST-…

src/sonic_ax_impl/main.py

@@ -11,7 +11,7 @@
 import ax_interface
 from sonic_ax_impl.mibs import ieee802_1ab, Namespace
 from . import logger
-from .mibs.ietf import rfc1213, rfc2737, rfc2863, rfc3433, rfc4292, rfc4363
+from .mibs.ietf import rfc1213, rfc2737, rfc2863, rfc3433, rfc4292, rfc4363, rfc2790
 from .mibs.vendor import dell, cisco
 
 # Background task update frequency ( in seconds )
@@ -41,6 +41,8 @@ class SonicMIB(
     cisco.ciscoPfcExtMIB.cpfcIfPriorityTable,
     cisco.ciscoSwitchQosMIB.csqIfQosGroupStatsTable,
     cisco.ciscoEntityFruControlMIB.cefcFruPowerStatusTable,
+    rfc2790.hrStorageTable,
+    rfc2790.hrFSTable,
 ):
     """
     If SONiC was to create custom MIBEntries, they may be specified here.

src/sonic_ax_impl/mibs/ietf/rfc2790.py

@@ -0,0 +1,279 @@
+from enum import Enum, unique
+from sonic_ax_impl import mibs
+from ax_interface import MIBMeta, ValueType, SubtreeMIBEntry
+import sonic_ax_impl.mibs.ietf.physical_entity_sub_oid_generator as fru_oids
+import re
+
+@unique
+class hrFSinfoDB(str, Enum):
+    """
+    hr FS info keys
+    """
+    TYPE = "Type"
+    MOUNT = "MountPoint"
+
+def get_FS_data(fs_info):
+    """
+    :param chassis_info: chassis info dict
+    :return: tuple of chassis;
+    Empty string if field not in chassis_info
+    """
+    return tuple(fs_info.get(field.value, "") for field in hrFSinfoDB)
+
+class fsHandler:
+    """
+    Class to handle the SNMP request
+    """
+    def __init__(self):
+        """
+        init the handler
+        """
+        self.statedb = mibs.init_db()
+        self.statedb.connect(self.statedb.STATE_DB)
+        self.init_fs()
+
+    def init_fs(self):
+        fs_entries = self.statedb.keys(self.statedb.STATE_DB,
+                'MOUNT_POINTS' + mibs.TABLE_NAME_SEPARATOR_VBAR + '*')
+        if not fs_entries:
+            mibs.logger.debug('No mount point found in {}'.format(fs_entries))
+            return None
+        fs_entries = sorted(fs_entries)
+        self.fs_entries = fs_entries
+
+    def get_next(self, sub_id):
+        """
+        :param sub_id: The 1-based snmp sub-identifier query.
+        :return: the next sub id.
+        """
+        if not sub_id:
+            self.init_fs()
+            return (1, )
+
+        index = sub_id[0]
+        if index >= len(self.fs_entries):
+            return None
+
+        return (index + 1,)
+
+
+    # Type of FS entry
+    def _get_fs_type(self, oid):
+        """
+        :return: Type of requested sub_id according to hrFSTable 
+        :ref: https://mibbrowser.online/mibdb_search.php?mib=HOST-RESOURCES-V2-MIB
+        """
+        fs_name = self.fs_entries[oid]
+        fs_info = self.statedb.get_all(self.statedb.STATE_DB, fs_name)
+        fs_type, fs_mount = get_FS_data(fs_info)
+        mibs.logger.debug('fs storage info {} name {} type {}'.format(oid, fs_name, fs_type))
+
+        return fs_type
+
+    def get_fs_type(self, sub_id):
+        """
+        :param sub_id: The 1-based sub-identifier query. Only iterate through the MOUNTPOINT
+        :return: Type of requested sub_id according to hrFSTable 
+        :ref: https://mibbrowser.online/mibdb_search.php?mib=HOST-RESOURCES-V2-MIB
+        """
+        if not sub_id:
+            return None
+
+        return self._get_fs_type(sub_id[0]-1)
+
+    # Mountpoint of FS entry 
+    def _get_fs_mount(self, oid):
+        """
+        :return: Mountpoint of requested sub_id according to hrFSTable 
+        :ref: https://mibbrowser.online/mibdb_search.php?mib=HOST-RESOURCES-V2-MIB
+        """
+        fs_name = self.fs_entries[oid]
+        fs_info = self.statedb.get_all(self.statedb.STATE_DB, fs_name)
+
+        mount_str = fs_name.split('|')[1]
+        mibs.logger.debug('fs storage info {} name {} mountpoint {}'.format(oid, fs_name, mount_str))
+        ret_str = mount_str.encode('utf-8')
+        return ret_str
+
+    def get_fs_mount(self, sub_id):
+        """
+        :param sub_id: The 1-based sub-identifier query. Only iterate through the MOUNTPOINT
+        :return: Mountpoint of requested sub_id according to hrFSTable 
+        :ref: https://mibbrowser.online/mibdb_search.php?mib=HOST-RESOURCES-V2-MIB
+        """
+        if not sub_id:
+            return None
+        return self._get_fs_mount(sub_id[0]-1)
+
+
+class hrFSTable(metaclass=MIBMeta, prefix='.1.3.6.1.2.1.25.3.8'):
+    """
+    'hrFSTable' http://oidref.com/1.3.6.1.2.1.25.3.8
+    """
+    handler = fsHandler()
+    fsMountpoint = SubtreeMIBEntry('1.2', handler, ValueType.OCTET_STRING, handler.get_fs_mount)
+    fsType = SubtreeMIBEntry('1.4', handler, ValueType.OCTET_STRING, handler.get_fs_type)
+
+
+# =======================
+@unique
+class hrStorageInfoDB(str, Enum):
+    """
+    hr Storage info keys
+    """
+    KBLOCKS = "1K-blocks"
+    USED = "Used"
+    FILESYSTEM = "Filesystem"
+
+def get_hrStorage_data(hrStorage_info):
+    """
+    :param chassis_info: chassis info dict
+    :return: tuple of chassis;
+    Empty string if field not in chassis_info
+    """
+    return tuple(hrStorage_info.get(field.value, "") for field in hrStorageInfoDB)
+
+class hrStorageHandler:
+    """
+    Class to handle the SNMP request
+    """
+    def __init__(self):
+        """
+        init the handler
+        """
+        self.statedb = mibs.init_db()
+        self.statedb.connect(self.statedb.STATE_DB)
+        self.init_hr_storage()
+
+    def init_hr_storage(self):
+        hr_storage_entries = self.statedb.keys(self.statedb.STATE_DB,
+                'MOUNT_POINTS' + mibs.TABLE_NAME_SEPARATOR_VBAR + '*')
+        if not hr_storage_entries:
+            mibs.logger.debug('No mount point found in {}'.format(hr_storage_entries))
+            return None
+        hr_storage_entries = sorted(hr_storage_entries)
+        self.hr_storage_entries = hr_storage_entries 
+
+    def get_next(self, sub_id):
+        """
+        :param sub_id: The 1-based snmp sub-identifier query.
+        :return: the next sub id.
+        """
+        if not sub_id:
+            self.init_hr_storage()
+            return (1, )
+
+        index = sub_id[0]
+        if index >= len(self.hr_storage_entries):
+            return None
+
+        return (index + 1,)
+
+
+    # Used space of HRStorage
+    def _get_hrstorage_used(self, oid):
+        """
+        :return: Used space of requested sub_id according to hrStorageTable 
+        :ref: https://mibbrowser.online/mibdb_search.php?mib=HOST-RESOURCES-V2-MIB
+        """
+        hrstorage_name = self.hr_storage_entries[oid]
+        hrstorage_info = self.statedb.get_all(self.statedb.STATE_DB, hrstorage_name)
+        kblocks, used, filesystem = get_hrStorage_data(hrstorage_info)
+        mibs.logger.debug('hr storage info {} name {} used {}'.format(oid, hrstorage_name, used))
+
+        used_num = int(used)
+        return used_num 
+
+    def get_hrstorage_used(self, sub_id):
+        """
+        :param sub_id: The 1-based sub-identifier query. Only iterate through the MOUNTPOINT
+        :return: Used space of requested sub_id according to hrStorageTable
+        :ref: https://mibbrowser.online/mibdb_search.php?mib=HOST-RESOURCES-V2-MIB
+        """
+        if not sub_id:
+            return None
+
+        return self._get_hrstorage_used(sub_id[0]-1)
+
+
+    """
+    get_hrstorage_size will return 65536 if the output of 1k blocks (in df -T) is 65536 1k-blocks.
+    hrStorageAllocationUnits (1.3.6.1.2.1.25.2.3.1.4) is an int_32 represents the size in bytes  
+    hrStorageSize            (1.3.6.1.2.1.25.2.3.1.5) is an int_32 represents the size of storage in units of hrStorageAllocationUnits
+    """
+    # Size of HRStorage 
+    def _get_hrstorage_size(self, oid):
+        """
+        :return: Size of requested sub_id according to hrStorageTable 
+        :ref: https://mibbrowser.online/mibdb_search.php?mib=HOST-RESOURCES-V2-MIB
+        """
+        hrstorage_name = self.hr_storage_entries[oid]
+        hrstorage_info = self.statedb.get_all(self.statedb.STATE_DB, hrstorage_name)
+        kblocks, used, filesystem = get_hrStorage_data(hrstorage_info)
+        mibs.logger.debug('hr storage info {} name {} size {}'.format(oid, hrstorage_name, kblocks))
+
+        size_num = int(kblocks)
+        return size_num
+
+    def get_hrstorage_size(self, sub_id):
+        """
+        :param sub_id: The 1-based sub-identifier query. Only iterate through the MOUNTPOINT
+        :return: Size of requested sub_id according to hrStorageTable
+        :ref: https://mibbrowser.online/mibdb_search.php?mib=HOST-RESOURCES-V2-MIB
+        """
+        if not sub_id:
+            return None
+        return self._get_hrstorage_size(sub_id[0]-1)
+
+
+    # Description of the filesystem of HRStorage
+    def _get_hrstorage_descr(self, oid):
+        """
+        :return: Description of requested sub_id according to hrStorageTable 
+        :ref: https://mibbrowser.online/mibdb_search.php?mib=HOST-RESOURCES-V2-MIB
+        """
+        hrstorage_name = self.hr_storage_entries[oid]
+        hrstorage_info = self.statedb.get_all(self.statedb.STATE_DB, hrstorage_name)
+        kblocks, used, filesystem = get_hrStorage_data(hrstorage_info)
+        mibs.logger.debug('hr storage info {} name {} filesystem {}'.format(oid, hrstorage_name, filesystem))
+        return filesystem 
+
+    def get_hrstorage_descr (self, sub_id):
+        """
+        :param sub_id: The 1-based sub-identifier query. Only iterate through the MOUNTPOINT
+        :return: Descr of requested sub_id according to hrStorageTable
+        :ref: https://mibbrowser.online/mibdb_search.php?mib=HOST-RESOURCES-V2-MIB
+        """
+        if not sub_id:
+            return None
+        return self._get_hrstorage_descr(sub_id[0]-1)
+
+
+    # Alloc units of the filesystem of HRStorage
+    def _get_hrstorage_alloc(self, oid):
+        """
+        :return: Allocation units of requested sub_id according to hrStorageTable 
+        :ref: https://mibbrowser.online/mibdb_search.php?mib=HOST-RESOURCES-V2-MIB
+        """
+        return 1024
+
+    def get_hrstorage_alloc(self, sub_id):
+        """
+        :param sub_id: The 1-based sub-identifier query. Only iterate through the MOUNTPOINT
+        :return: Alloc units of requested sub_id according to hrStorageTable
+        :ref: https://mibbrowser.online/mibdb_search.php?mib=HOST-RESOURCES-V2-MIB
+        """
+        if not sub_id:
+            return None
+        return self._get_hrstorage_alloc(sub_id[0]-1)
+
+
+class hrStorageTable(metaclass=MIBMeta, prefix='.1.3.6.1.2.1.25.2.3'):
+    """
+    'hrStorageTable' http://oidref.com/1.3.6.1.2.1.25.2.3
+    """
+    handler = hrStorageHandler()
+    hrStorageDescr = SubtreeMIBEntry('1.3', handler, ValueType.OCTET_STRING, handler.get_hrstorage_descr)
+    hrStorageAlloc = SubtreeMIBEntry('1.4', handler, ValueType.INTEGER, handler.get_hrstorage_alloc)
+    hrStorageSize = SubtreeMIBEntry('1.5', handler, ValueType.INTEGER, handler.get_hrstorage_size)
+    hrStorageUsed = SubtreeMIBEntry('1.6', handler, ValueType.INTEGER, handler.get_hrstorage_used)

tests/mock_tables/state_db.json

@@ -148,6 +148,27 @@
     "temperature": "20.5",
     "is_replaceable": "False"
   },
+  "MOUNT_POINTS|/dev": {
+    "Filesystem": "/host",
+    "Type": "ext4",
+    "1K-blocks": "52829740",
+    "Used": "0",
+    "Available": "52829740"
+  },
+  "MOUNT_POINTS|/dev2": {
+    "Filesystem": "/host2",
+    "Type": "ext3",
+    "1K-blocks": "12345",
+    "Used": "10",
+    "Available": "12335"
+  },
+"MOUNT_POINTS|/dev3": {
+"Filesystem": "/host3",
+"Type": "nfs",
+"1K-blocks": "1000",
+"Used": "100",
+"Available": "900"
+},
   "NEIGH_STATE_TABLE|10.0.0.57": {
     "state" : "6402"
   },