2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright © 2021 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 * ============LICENSE_END=========================================================
20 package org.o.ran.oam.nf.oam.adopter.snmp.manager.mapper;
22 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
23 import io.reactivex.rxjava3.core.Maybe;
25 import java.util.Optional;
26 import java.util.stream.Collectors;
27 import org.o.ran.oam.nf.oam.adopter.api.CommonEventFormat302ONAP;
28 import org.o.ran.oam.nf.oam.adopter.api.Event;
29 import org.o.ran.oam.nf.oam.adopter.snmp.manager.SnmpMappingConfigurationProvider;
30 import org.o.ran.oam.nf.oam.adopter.snmp.manager.pojos.TrapsMappingConfiguration;
31 import org.slf4j.Logger;
32 import org.slf4j.LoggerFactory;
33 import org.snmp4j.PDU;
34 import org.snmp4j.smi.OID;
35 import org.snmp4j.smi.UdpAddress;
36 import org.springframework.beans.factory.annotation.Autowired;
37 import org.springframework.stereotype.Service;
40 public class SnmpMapperImpl implements SnmpMapper {
41 private static final Logger LOG = LoggerFactory.getLogger(SnmpMapperImpl.class);
42 public static final String DEFAULT = "default";
43 public static final OID SNMP_TRAP_OID = new OID("1.3.6.1.6.3.1.1.4.1.0");
44 private final SnmpMappingConfigurationProvider snmpMappingConfigurationProvider;
47 public SnmpMapperImpl(final SnmpMappingConfigurationProvider snmpMappingConfigurationProvider) {
48 this.snmpMappingConfigurationProvider = snmpMappingConfigurationProvider;
52 @SuppressFBWarnings("REC_CATCH_EXCEPTION")
53 public Maybe<CommonEventFormat302ONAP> toEvent(final UdpAddress peerAddress, final String timeZone, final PDU pdu) {
55 final int eventType = pdu.getType();
56 if (pdu.getType() != PDU.NOTIFICATION) {
57 LOG.warn("SNMP Event type {} not supported, ignoring event.", eventType);
60 LOG.info("Starting Mapping of SNMP Event.");
61 LOG.trace("Pdu received {}.", pdu);
62 final var event = new Event();
63 final var trapOidVariable = pdu.getVariable(SNMP_TRAP_OID).toString();
64 final var vesMappingConfig = snmpMappingConfigurationProvider.getVesMappingConfiguration();
65 final Map<String, TrapsMappingConfiguration> trapsDescriptions = vesMappingConfig.getTraps().stream()
66 .collect(Collectors.toMap(TrapsMappingConfiguration::getOid, trapsDescription -> trapsDescription));
67 final TrapsMappingConfiguration trapsDescription =
68 Optional.ofNullable(trapsDescriptions.get(trapOidVariable)).orElse(trapsDescriptions.get(DEFAULT));
69 event.setCommonEventHeader(CommonEventHeaderHandler.toCommonEventHeader(peerAddress, vesMappingConfig,
70 trapsDescription, pdu, timeZone));
71 event.setFaultFields(FaultFieldsHandler.toFaultFields(trapsDescription, pdu));
72 final var eventFormat = new CommonEventFormat302ONAP();
73 eventFormat.setEvent(event);
74 eventFormat.setEventList(null);
75 LOG.info("Mapping of SNMP Event type {} finished.", eventType);
76 return Maybe.just(eventFormat);
77 } catch (final Exception e) {
78 return Maybe.error(e);