[debug dump util] COPP Module Added (sonic-net#1670)

What I did
HLD for Dump Utility: HLD.

Added the COPP Module to the Debug Dump Utility
Added the Corresponding UT's

dump/plugins/copp.py

@@ -0,0 +1,351 @@
+import re
+from dump.match_infra import MatchRequest
+from dump.helper import create_template_dict
+from dump.helper import handle_error, handle_multiple_keys_matched_error
+from .executor import Executor
+
+TRAP_ID_MAP = {
+    "stp": "SAI_HOSTIF_TRAP_TYPE_STP",
+    "lacp": "SAI_HOSTIF_TRAP_TYPE_LACP",
+    "eapol": "SAI_HOSTIF_TRAP_TYPE_EAPOL",
+    "lldp": "SAI_HOSTIF_TRAP_TYPE_LLDP",
+    "pvrst": "SAI_HOSTIF_TRAP_TYPE_PVRST",
+    "igmp_query": "SAI_HOSTIF_TRAP_TYPE_IGMP_TYPE_QUERY",
+    "igmp_leave": "SAI_HOSTIF_TRAP_TYPE_IGMP_TYPE_LEAVE",
+    "igmp_v1_report": "SAI_HOSTIF_TRAP_TYPE_IGMP_TYPE_V1_REPORT",
+    "igmp_v2_report": "SAI_HOSTIF_TRAP_TYPE_IGMP_TYPE_V2_REPORT",
+    "igmp_v3_report": "SAI_HOSTIF_TRAP_TYPE_IGMP_TYPE_V3_REPORT",
+    "sample_packet": "SAI_HOSTIF_TRAP_TYPE_SAMPLEPACKET",
+    "switch_cust_range": "SAI_HOSTIF_TRAP_TYPE_SWITCH_CUSTOM_RANGE_BASE",
+    "arp_req": "SAI_HOSTIF_TRAP_TYPE_ARP_REQUEST",
+    "arp_resp": "SAI_HOSTIF_TRAP_TYPE_ARP_RESPONSE",
+    "dhcp": "SAI_HOSTIF_TRAP_TYPE_DHCP",
+    "ospf": "SAI_HOSTIF_TRAP_TYPE_OSPF",
+    "pim": "SAI_HOSTIF_TRAP_TYPE_PIM",
+    "vrrp": "SAI_HOSTIF_TRAP_TYPE_VRRP",
+    "bgp": "SAI_HOSTIF_TRAP_TYPE_BGP",
+    "dhcpv6": "SAI_HOSTIF_TRAP_TYPE_DHCPV6",
+    "ospfv6": "SAI_HOSTIF_TRAP_TYPE_OSPFV6",
+    "vrrpv6": "SAI_HOSTIF_TRAP_TYPE_VRRPV6",
+    "bgpv6": "SAI_HOSTIF_TRAP_TYPE_BGPV6",
+    "neigh_discovery": "SAI_HOSTIF_TRAP_TYPE_IPV6_NEIGHBOR_DISCOVERY",
+    "mld_v1_v2": "SAI_HOSTIF_TRAP_TYPE_IPV6_MLD_V1_V2",
+    "mld_v1_report": "SAI_HOSTIF_TRAP_TYPE_IPV6_MLD_V1_REPORT",
+    "mld_v1_done": "SAI_HOSTIF_TRAP_TYPE_IPV6_MLD_V1_DONE",
+    "mld_v2_report": "SAI_HOSTIF_TRAP_TYPE_MLD_V2_REPORT",
+    "ip2me": "SAI_HOSTIF_TRAP_TYPE_IP2ME",
+    "ssh": "SAI_HOSTIF_TRAP_TYPE_SSH",
+    "snmp": "SAI_HOSTIF_TRAP_TYPE_SNMP",
+    "router_custom_range": "SAI_HOSTIF_TRAP_TYPE_ROUTER_CUSTOM_RANGE_BASE",
+    "l3_mtu_error": "SAI_HOSTIF_TRAP_TYPE_L3_MTU_ERROR",
+    "ttl_error": "SAI_HOSTIF_TRAP_TYPE_TTL_ERROR",
+    "udld": "SAI_HOSTIF_TRAP_TYPE_UDLD",
+    "bfd": "SAI_HOSTIF_TRAP_TYPE_BFD",
+    "bfdv6": "SAI_HOSTIF_TRAP_TYPE_BFDV6",
+    "src_nat_miss": "SAI_HOSTIF_TRAP_TYPE_SNAT_MISS",
+    "dest_nat_miss": "SAI_HOSTIF_TRAP_TYPE_DNAT_MISS"
+}
+
+CFG_COPP_TRAP_TABLE_NAME = "COPP_TRAP"
+CFG_COPP_GROUP_TABLE_NAME = "COPP_GROUP"
+APP_COPP_TABLE_NAME = "COPP_TABLE"
+
+ASIC_DB_PREFIX = "ASIC_STATE"
+
+ASIC_TRAP_OBJ = ASIC_DB_PREFIX + ":" + "SAI_OBJECT_TYPE_HOSTIF_TRAP"
+ASIC_TRAP_GROUP_OBJ = ASIC_DB_PREFIX + ":" + "SAI_OBJECT_TYPE_HOSTIF_TRAP_GROUP"
+ASIC_HOSTIF_TABLE_ENTRY = ASIC_DB_PREFIX + ":" + "SAI_OBJECT_TYPE_HOSTIF_TABLE_ENTRY"
+ASIC_HOSTIF = ASIC_DB_PREFIX + ":" + "SAI_OBJECT_TYPE_HOSTIF"
+ASIC_POLICER_OBJ = ASIC_DB_PREFIX + ":" + "SAI_OBJECT_TYPE_POLICER"
+ASIC_QUEUE_OBJ = ASIC_DB_PREFIX + ":" + "SAI_OBJECT_TYPE_QUEUE"
+
+
+class Copp(Executor):
+
+    ARG_NAME = "trap_id"
+    CONFIG_FILE = "/etc/sonic/copp_cfg.json"
+
+    def __init__(self, match_engine=None):
+        super().__init__(match_engine)
+        self.copp_trap_cfg_key = ""
+        self.trap_group = ""
+        self.trap_id = ""
+        self.ns = ""
+        self.ret_temp = {}
+
+    def fetch_all_trap_ids(self, ret):
+        traps = []
+        if not ret["error"]:
+            for key in ret["keys"]:
+                temp_ids = ret["return_values"][key]["trap_ids"].split(",")
+                for id in temp_ids:
+                    traps.append(id)
+        return traps
+
+    def get_all_args(self, ns):
+        all_trap_ids = set()
+        req = MatchRequest(file=Copp.CONFIG_FILE, table=CFG_COPP_TRAP_TABLE_NAME, return_fields=["trap_ids"], ns=ns)
+        ret = self.match_engine.fetch(req)
+        all_trap_ids.update(self.fetch_all_trap_ids(ret))
+
+        req = MatchRequest(db="CONFIG_DB", table=CFG_COPP_TRAP_TABLE_NAME, return_fields=["trap_ids"], ns=ns)
+        ret = self.match_engine.fetch(req)
+        all_trap_ids.update(self.fetch_all_trap_ids(ret))
+        return list(all_trap_ids)
+
+    def execute(self, params):
+        self.ret_temp = create_template_dict(dbs=["CONFIG_DB", "APPL_DB", "ASIC_DB", "STATE_DB", "CONFIG_FILE"])
+        self.ns = params["namespace"]
+        self.trap_id = params[Copp.ARG_NAME]
+        self.copp_trap_cfg_key = ""
+        self.trap_group = ""
+        self.handle_user_and_default_config()
+        self.handle_appl_db()
+        self.handle_asic_db()
+        self.handle_state_db()
+        return self.ret_temp
+
+    def handle_state_db(self):
+        req = MatchRequest(db="STATE_DB", table="COPP_TRAP_TABLE", key_pattern=self.copp_trap_cfg_key)
+        ret = self.match_engine.fetch(req)
+        if not ret["error"] and len(ret["keys"]) > 0:
+            self.ret_temp["STATE_DB"]["keys"].append(ret["keys"][0])
+        else:
+            self.ret_temp["STATE_DB"]["tables_not_found"].append("COPP_TRAP_TABLE")
+
+        req = MatchRequest(db="STATE_DB", table="COPP_GROUP_TABLE", key_pattern=self.trap_group)
+        ret = self.match_engine.fetch(req)
+        if not ret["error"] and len(ret["keys"]) > 0:
+            self.ret_temp["STATE_DB"]["keys"].append(ret["keys"][0])
+        else:
+            self.ret_temp["STATE_DB"]["tables_not_found"].append("COPP_GROUP_TABLE")
+
+    def handle_appl_db(self):
+        req = MatchRequest(db="APPL_DB", table=APP_COPP_TABLE_NAME, key_pattern="*", field="trap_ids",
+                           value=self.trap_id, match_entire_list=False, return_fields=["trap_group"])
+        ret = self.match_engine.fetch(req)
+        tg = ""
+        if not ret["error"] and len(ret["keys"]) > 0:
+            if len(ret["keys"]) > 1:
+                err_str_tup = ("ERROR: Multiple COPP_TABLE Keys found for the trap_id {} in",
+                               "the APPL_DB, keys found: {}")
+                err_str = " ".join(err_str_tup)
+                err_str = err_str.format(self.trap_id, str(ret["keys"]))
+                handle_multiple_keys_matched_error(err_str, ret["keys"][0])
+            self.ret_temp["APPL_DB"]["keys"].append(ret["keys"][0])
+            tg = ret["return_values"][ret["keys"][0]]["trap_group"]
+        else:
+            self.ret_temp["APPL_DB"]["tables_not_found"].append(APP_COPP_TABLE_NAME)
+
+        if tg != self.trap_group and not self.trap_group and not tg:
+            err_str_tup = ("The Associated Trap_group for the trap_id found in APPL",
+                           "and CONFIG_DB/CONFIG_FILE did not match.",
+                           "In APPL_DB: {}, CONFIG_DB: {}",
+                           "\n Proceding with the trap group found in APPL DB")
+            err_str = " ".join(err_str_tup)
+            err_str = err_str.format(tg, self.trap_group)
+            handle_error(err_str, False)
+
+        if tg:
+            self.trap_group = tg
+
+    def handle_asic_db(self):
+        if self.trap_id not in TRAP_ID_MAP:
+            err_str = "Invalid Trap Id {} is provided, no corresponding SAI_TRAP_OBJ is found"
+            handle_error(err_str.format(self.trap_id), False)
+            sai_trap_id = ""
+        else:
+            sai_trap_id = TRAP_ID_MAP[self.trap_id]
+        sai_trap, sai_trap_grp = self.__get_asic_hostif_trap_obj(sai_trap_id)
+        sai_queue, sai_policer = self.__get_asic_hostif_trap_group_obj(sai_trap_grp)
+        self.__get_asic_policer_obj(sai_policer)
+        self.__get_asic_queue_obj(sai_queue)
+        sai_hostif_vid = self.__get_asic_hostif_entry_obj(sai_trap)
+        self.__get_asic_hostif_obj(sai_hostif_vid)
+
+    def __get_asic_hostif_trap_obj(self, sai_trap_id):
+        if not sai_trap_id:
+            self.ret_temp["ASIC_DB"]["tables_not_found"].append(ASIC_TRAP_OBJ)
+            return "", ""
+
+        req = MatchRequest(db="ASIC_DB", table=ASIC_TRAP_OBJ, field="SAI_HOSTIF_TRAP_ATTR_TRAP_TYPE", value=sai_trap_id,
+                           ns=self.ns, return_fields=["SAI_HOSTIF_TRAP_ATTR_TRAP_GROUP"])
+        ret = self.match_engine.fetch(req)
+        if not ret["error"] and len(ret["keys"]) > 0:
+            if len(ret["keys"]) > 1:
+                err_str = "ERROR: Multiple {} Keys found for the trap_sai_type {} in the ASIC_DB, keys found: {}".format(ASIC_TRAP_OBJ, trap_sai_obj, str(ret["keys"]))
+                handle_multiple_keys_matched_error(err_str, ret["keys"][0])
+            trap_asic_key = ret["keys"][0]
+            self.ret_temp["ASIC_DB"]["keys"].append(trap_asic_key)
+            return trap_asic_key, ret["return_values"][trap_asic_key]["SAI_HOSTIF_TRAP_ATTR_TRAP_GROUP"]
+        else:
+            self.ret_temp["ASIC_DB"]["tables_not_found"].append(ASIC_TRAP_OBJ)
+            return "", ""
+
+    def __get_asic_hostif_trap_group_obj(self, trap_group_obj):
+        if not trap_group_obj:
+            self.ret_temp["ASIC_DB"]["tables_not_found"].append(ASIC_TRAP_GROUP_OBJ)
+            return "", ""
+
+        req = MatchRequest(db="ASIC_DB", table=ASIC_TRAP_GROUP_OBJ, key_pattern=trap_group_obj, ns=self.ns,
+                           return_fields=["SAI_HOSTIF_TRAP_GROUP_ATTR_QUEUE", "SAI_HOSTIF_TRAP_GROUP_ATTR_POLICER"])
+        ret = self.match_engine.fetch(req)
+        if not ret["error"] and len(ret["keys"]) > 0:
+            trap_group_asic_key = ret["keys"][0]
+            self.ret_temp["ASIC_DB"]["keys"].append(trap_group_asic_key)
+            SAI_QUEUE_INDEX = ret["return_values"][trap_group_asic_key]["SAI_HOSTIF_TRAP_GROUP_ATTR_QUEUE"]
+            SAI_POLICER_OBJ = ret["return_values"][trap_group_asic_key]["SAI_HOSTIF_TRAP_GROUP_ATTR_POLICER"]
+            return SAI_QUEUE_INDEX, SAI_POLICER_OBJ
+        else:
+            self.ret_temp["ASIC_DB"]["tables_not_found"].append(ASIC_TRAP_GROUP_OBJ)
+            return "", ""
+
+    def __get_asic_policer_obj(self, policer_sai_obj):
+        # Not adding to tables_not_found because, some of the trap_ids might not have a policer associated with them
+        # and that is expected
+        if not policer_sai_obj:
+            return
+        req = MatchRequest(db="ASIC_DB", table=ASIC_POLICER_OBJ, key_pattern=policer_sai_obj, ns=self.ns)
+        ret = self.match_engine.fetch(req)
+        if not ret["error"] and len(ret["keys"]) > 0:
+            self.ret_temp["ASIC_DB"]["keys"].append(ret["keys"][0])
+
+    def __get_asic_queue_obj(self, queue_sai_obj):
+        # Not adding tp tables_not_found because of the type of reason specified for policer obj
+        if not queue_sai_obj:
+            return
+        req = MatchRequest(db="ASIC_DB", table=ASIC_QUEUE_OBJ, field="SAI_QUEUE_ATTR_INDEX", value=queue_sai_obj, ns=self.ns)
+        ret = self.match_engine.fetch(req)
+        if not ret["error"] and len(ret["keys"]) > 0:
+            self.ret_temp["ASIC_DB"]["keys"].append(ret["keys"][0])
+
+    def __get_asic_hostif_entry_obj(self, sai_trap_key):
+        # Not adding tp tables_not_found because of the type of reason specified for policer obj
+        if not sai_trap_key:
+            return
+        matches = re.findall(r"oid:0x\w{1,14}", sai_trap_key)
+        if matches:
+            sai_trap_vid = matches[0]
+        else:
+            return
+        req = MatchRequest(db="ASIC_DB", table=ASIC_HOSTIF_TABLE_ENTRY, field="SAI_HOSTIF_TABLE_ENTRY_ATTR_TRAP_ID",
+                           value=sai_trap_vid, return_fields=["SAI_HOSTIF_TABLE_ENTRY_ATTR_HOST_IF"], ns=self.ns)
+        ret = self.match_engine.fetch(req)
+        if not ret["error"] and len(ret["keys"]) > 0:
+            sai_hostif_table_entry_key = ret["keys"][0]
+            self.ret_temp["ASIC_DB"]["keys"].append(sai_hostif_table_entry_key)
+            sai_hostif_vid = ret["return_values"][sai_hostif_table_entry_key]["SAI_HOSTIF_TABLE_ENTRY_ATTR_HOST_IF"]
+            return sai_hostif_vid
+
+    def __get_asic_hostif_obj(self, sai_hostif_vid):
+        # Not adding tp tables_not_found because of the type of reason specified for policer obj
+        if not sai_hostif_vid:
+            return
+        req = MatchRequest(db="ASIC_DB", table=ASIC_HOSTIF, key_pattern=sai_hostif_vid, ns=self.ns)
+        ret = self.match_engine.fetch(req)
+        if not ret["error"] and len(ret["keys"]) > 0:
+            self.ret_temp["ASIC_DB"]["keys"].append(ret["keys"][0])
+
+     # When the user writes config to CONFIG_DB, that takes precedence over default config
+    def handle_user_and_default_config(self):
+        # ------------------ Find trap_id_key and trap_group from both the sources
+        # Search for any user-provided config for the trap-id provided
+        trap_id_key_db, trap_group_db = self.__find_trap_id_in_db()
+        trap_id_key_cf, trap_group_cf = "", ""
+        if not trap_id_key_db:  # If nothing is found, search in CONFIG_FILE
+            trap_id_key_cf, trap_group_cf = self.__find_trap_id_in_conf_file()
+        elif trap_id_key_db and not trap_group_db:
+            _, trap_group_cf = self.__find_trap_id_in_conf_file(trap_id_key_db.split("|")[-1], False)
+
+        # ------------------ Find any diff and fill the return dictionary with COPP_TRAP keys
+        if trap_id_key_db:
+            self.ret_temp["CONFIG_DB"]["keys"].append(trap_id_key_db)
+            self.copp_trap_cfg_key = trap_id_key_db.split("|")[-1]
+            id_in_file, _ = self.__find_trap_id_in_conf_file(self.copp_trap_cfg_key, False)
+            if id_in_file == trap_id_key_db:  # If any diff
+                self.ret_temp["CONFIG_FILE"]["keys"].append(trap_id_key_db)
+        elif trap_id_key_cf:
+            self.ret_temp["CONFIG_FILE"]["keys"].append(trap_id_key_cf)
+            self.copp_trap_cfg_key = trap_id_key_cf.split("|")[-1]
+            id_in_file, _ = self.__find_trap_id_in_db(self.copp_trap_cfg_key, False)
+            if id_in_file == trap_id_key_cf:  # Find the diff, if any, inside the CONFIG DB
+                self.ret_temp["CONFIG_DB"]["keys"].append(trap_id_key_cf)
+        else:
+            self.ret_temp["CONFIG_FILE"]["tables_not_found"].append(CFG_COPP_TRAP_TABLE_NAME)
+            self.ret_temp["CONFIG_DB"]["tables_not_found"].append(CFG_COPP_TRAP_TABLE_NAME)
+
+        # ------------------ Find any diff and fill the return dictionary with COPP_GROUP keys
+        if trap_group_db:  # Preference to User-provided Config
+            self.trap_group = trap_group_db
+            trap_in_cfg_file = False
+        elif trap_group_cf:  # Then, the preference to the group found in CFG_File
+            self.trap_group = trap_group_cf
+            trap_in_cfg_file = True
+        else:
+            self.ret_temp["CONFIG_FILE"]["tables_not_found"].append(CFG_COPP_GROUP_TABLE_NAME)
+            self.ret_temp["CONFIG_DB"]["tables_not_found"].append(CFG_COPP_GROUP_TABLE_NAME)
+            return
+        tg_in_default = self.__fill_trap_group_in_conf_file(trap_in_cfg_file)  # Check if the trap_group in cfg_file
+        # Trap_group is expected to be in cfg_db when
+        # 1) Trap_group is not found in cfg_file
+        # 2) Trap_ID was provided by the user i.e trap_in_cfg_file = False
+        # Otherwise, we're just looking for diff
+        self.__fill_trap_group_in_conf_db(not(tg_in_default) and not(trap_in_cfg_file))
+
+    def __fill_trap_group_in_conf_file(self, not_found_report=True):
+        req = MatchRequest(table=CFG_COPP_GROUP_TABLE_NAME, key_pattern=self.trap_group, ns=self.ns, file=Copp.CONFIG_FILE)
+        ret = self.match_engine.fetch(req)
+        key_tg = ""
+        if not ret["error"] and len(ret["keys"]) > 0:
+            key_tg = ret["keys"][0]
+            self.ret_temp["CONFIG_FILE"]["keys"].append(key_tg)
+            return True
+        elif not_found_report:
+            self.ret_temp["CONFIG_FILE"]["tables_not_found"].append(CFG_COPP_GROUP_TABLE_NAME)
+        return False
+
+    def __fill_trap_group_in_conf_db(self, not_found_report=True):
+        req = MatchRequest(table=CFG_COPP_GROUP_TABLE_NAME, key_pattern=self.trap_group, ns=self.ns, db="CONFIG_DB")
+        ret = self.match_engine.fetch(req)
+        key_tg = ""
+        if not ret["error"] and len(ret["keys"]) > 0:
+            key_tg = ret["keys"][0]
+            self.ret_temp["CONFIG_DB"]["keys"].append(key_tg)
+            return True
+        elif not_found_report:
+            self.ret_temp["CONFIG_DB"]["tables_not_found"].append(CFG_COPP_GROUP_TABLE_NAME)
+        return False
+
+    def __find_trap_id_in_conf_file(self, key_ptrn="*", do_fv_check=True):
+        field_, value_ = None, None
+        if do_fv_check:
+            field_ = "trap_ids"
+            value_ = self.trap_id
+        req = MatchRequest(file=Copp.CONFIG_FILE, table=CFG_COPP_TRAP_TABLE_NAME, key_pattern=key_ptrn, match_entire_list=False,
+                           ns=self.ns, return_fields=["trap_group"], field=field_, value=value_)
+        ret = self.match_engine.fetch(req)
+        if not ret["error"] and len(ret["keys"]) > 0:
+            if len(ret["keys"]) > 1:
+                err_str = "ERROR (AMBIGUITY): Multiple COPP_TRAP Keys found for the trap_id {} in the copp_init file,  i.e. {}".format(self.trap_id, str(ret["keys"]))
+                handle_multiple_keys_matched_error(err_str, ret["keys"][0])
+            key_copp_trap = ret["keys"][0]
+            return key_copp_trap, ret["return_values"][key_copp_trap]["trap_group"]
+        else:
+            return "", ""
+
+    def __find_trap_id_in_db(self, key_ptrn="*", do_fv_check=True):
+        field_, value_ = None, None
+        if do_fv_check:
+            field_ = "trap_ids"
+            value_ = self.trap_id
+        req = MatchRequest(db="CONFIG_DB", table=CFG_COPP_TRAP_TABLE_NAME, key_pattern=key_ptrn, match_entire_list=False,
+                           ns=self.ns, return_fields=["trap_group"], field=field_, value=value_)
+        ret = self.match_engine.fetch(req)
+        if not ret["error"] and len(ret["keys"]) > 0:
+            if len(ret["keys"]) > 1:
+                err_str = "Multiple COPP_TRAP Keys found for the trap_id {} in the CONFIG_DB, i.e. {}".format(self.trap_id, str(ret["keys"]))
+                handle_multiple_keys_matched_error(err_str, ret["keys"][0])
+            key_copp_trap = ret["keys"][0]
+            return key_copp_trap, ret["return_values"][key_copp_trap]["trap_group"]
+        else:
+            return "", ""

tests/dump_input/copp/appl_db.json

@@ -0,0 +1,36 @@
+{
+    "COPP_TABLE:queue4_group2": {
+        "cbs": "6000",
+        "cir": "6000",
+        "meter_type": "packets",
+        "mode": "sr_tcm",
+        "queue": "1",
+        "red_action": "drop",
+        "trap_action": "trap",
+        "trap_priority": "1",
+        "trap_ids": "arp_req,arp_resp,neigh_discovery,snmp"   
+     },
+     "COPP_TABLE:queue2_group1": {
+        "cbs": "2000",
+        "cir": "2000",
+        "meter_type": "packets",
+        "mode": "sr_tcm",
+        "queue": "1",
+        "red_action": "drop",
+        "trap_action": "trap",
+        "trap_priority": "1",
+        "trap_ids": "sample_packet"   
+     },
+     "COPP_TABLE:queue4_group1": {
+        "trap_action":"trap",
+        "trap_priority":"4",
+        "queue": "4",
+        "trap_ids": "bgp,bgpv6,ospfv6,ospf"   
+     },
+     "COPP_TABLE:queue1_group2":{
+        "trap_ids": "src_nat_miss",
+        "trap_action":"trap",
+        "trap_priority":"4",
+        "queue": "4"
+     }
+}