| /* |
| * Copyright 2018-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.opencord.kafka.integrations; |
| |
| import com.fasterxml.jackson.databind.JsonNode; |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import com.fasterxml.jackson.databind.node.ObjectNode; |
| import org.apache.felix.scr.annotations.Activate; |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Deactivate; |
| import org.apache.felix.scr.annotations.Reference; |
| import org.apache.felix.scr.annotations.ReferenceCardinality; |
| import org.opencord.dhcpl2relay.DhcpAllocationInfo; |
| import org.opencord.dhcpl2relay.DhcpL2RelayEvent; |
| import org.opencord.dhcpl2relay.DhcpL2RelayListener; |
| import org.opencord.dhcpl2relay.DhcpL2RelayService; |
| import org.opencord.kafka.EventBusService; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.time.Instant; |
| |
| /** |
| * Listens for DHCP L2 relay events and pushes them on a Kafka bus. |
| */ |
| @Component(immediate = true) |
| public class DhcpL2RelayKafkaIntegration { |
| |
| public Logger log = LoggerFactory.getLogger(getClass()); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected EventBusService eventBusService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected DhcpL2RelayService authenticationService; |
| |
| private final DhcpL2RelayListener listener = new InternalDhcpL2RelayListener(); |
| |
| private static final String TOPIC = "dhcp.events"; |
| |
| private static final String TIMESTAMP = "timestamp"; |
| private static final String DEVICE_ID = "deviceId"; |
| private static final String TYPE = "type"; |
| private static final String MESSAGE_TYPE = "messageType"; |
| private static final String PORT_NUMBER = "portNumber"; |
| private static final String MAC_ADDRESS = "macAddress"; |
| private static final String IP_ADDRESS = "ipAddress"; |
| |
| @Activate |
| public void activate() { |
| authenticationService.addListener(listener); |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| authenticationService.removeListener(listener); |
| log.info("Stopped"); |
| } |
| |
| private void handle(DhcpL2RelayEvent event) { |
| eventBusService.send(TOPIC, serialize(event)); |
| } |
| |
| private JsonNode serialize(DhcpL2RelayEvent event) { |
| ObjectMapper mapper = new ObjectMapper(); |
| ObjectNode dhcpEvent = mapper.createObjectNode(); |
| DhcpAllocationInfo allocationInfo = event.subject(); |
| dhcpEvent.put(TYPE, event.type().toString()); |
| dhcpEvent.put(TIMESTAMP, Instant.now().toString()); |
| dhcpEvent.put(DEVICE_ID, event.connectPoint().deviceId().toString()); |
| dhcpEvent.put(MESSAGE_TYPE, allocationInfo.type().toString()); |
| dhcpEvent.put(PORT_NUMBER, event.connectPoint().port().toString()); |
| dhcpEvent.put(MAC_ADDRESS, allocationInfo.macAddress().toString()); |
| dhcpEvent.put(IP_ADDRESS, allocationInfo.ipAddress().toString()); |
| return dhcpEvent; |
| } |
| |
| private class InternalDhcpL2RelayListener implements |
| DhcpL2RelayListener { |
| |
| @Override |
| public void event(DhcpL2RelayEvent dhcpL2RelayEvent) { |
| handle(dhcpL2RelayEvent); |
| } |
| } |
| } |