2 * ============LICENSE_START========================================================================
3 * ONAP : ccsdk feature sdnr wt mountpoint-registrar
4 * =================================================================================================
5 * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
6 * Copyright (C) 2021 Samsung Electronics Intellectual Property. All rights reserved.
7 * =================================================================================================
8 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
9 * in compliance with the License. You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software distributed under the License
14 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
15 * or implied. See the License for the specific language governing permissions and limitations under
17 * ============LICENSE_END==========================================================================
20 package org.onap.ccsdk.features.sdnr.wt.mountpointregistrar.impl;
22 import com.fasterxml.jackson.core.JsonProcessingException;
23 import com.fasterxml.jackson.databind.JsonNode;
24 import com.fasterxml.jackson.databind.ObjectMapper;
25 import java.util.List;
26 import java.util.Properties;
27 import org.onap.ccsdk.features.sdnr.wt.mountpointregistrar.config.GeneralConfig;
28 import org.onap.ccsdk.features.sdnr.wt.mountpointregistrar.kafka.VESMsgKafkaConsumer;
29 import org.slf4j.Logger;
30 import org.slf4j.LoggerFactory;
32 public abstract class StrimziKafkaVESMsgConsumerImpl
33 implements StrimziKafkaVESMsgConsumer, StrimziKafkaVESMsgValidator {
35 private static final Logger LOG = LoggerFactory.getLogger(StrimziKafkaVESMsgConsumerImpl.class);
36 private static final String DEFAULT_SDNRUSER = "admin";
37 private static final String DEFAULT_SDNRPASSWD = "admin";
39 private final String name = this.getClass().getSimpleName();
40 private VESMsgKafkaConsumer consumer = null;
41 private boolean running = false;
42 private boolean ready = false;
43 private int fetchPause = 5000; // Default pause between fetch - 5 seconds
44 protected final GeneralConfig generalConfig;
46 protected StrimziKafkaVESMsgConsumerImpl(GeneralConfig generalConfig) {
47 this.generalConfig = generalConfig;
51 * Thread to fetch messages from the Kafka topic. Waits for the messages to
52 * arrive on the topic until a certain timeout and returns. If no data arrives
53 * on the topic, sleeps for a certain time period before checking again
62 boolean noData = true;
63 List<String> consumerResponse = null;
64 consumerResponse = consumer.poll();
65 for (String msg : consumerResponse) {
67 LOG.debug("{} received ActualMessage from Kafka VES Message topic {}", name, msg);
68 if (isMessageValid(msg)) {
76 } catch (InterruptedException e) {
77 LOG.warn("Caught exception reading from Kafka Message Topic", e);
78 Thread.currentThread().interrupt();
79 } catch (JsonProcessingException jsonProcessingException) {
80 LOG.warn("Failed to convert message to JsonNode: {}", jsonProcessingException.getMessage());
81 } catch (InvalidMessageException invalidMessageException) {
82 LOG.warn("Message is invalid because of: {}", invalidMessageException.getMessage());
83 } catch (Exception e) {
84 LOG.error("Caught exception reading from Kafka Message Topic", e);
92 public boolean isMessageValid(String message) {
96 protected JsonNode convertMessageToJsonNode(String message) throws JsonProcessingException {
97 return new ObjectMapper().readTree(message);
101 * Create a Kafka consumer by specifying properties containing information such as
102 * topic name, timeout, URL etc
105 public void init(Properties strimziKafkaProperties, Properties consumerProperties) {
108 this.consumer = new VESMsgKafkaConsumer(strimziKafkaProperties, consumerProperties);
109 this.consumer.subscribe(consumerProperties.getProperty("topic"));
111 } catch (Exception e) {
112 LOG.error("Error initializing Kafka Message consumer from file {} {}", consumerProperties, e);
116 private void pauseThread() throws InterruptedException {
117 if (fetchPause > 0) {
118 LOG.debug("No data received from fetch. Pausing {} ms before retry", fetchPause);
119 Thread.sleep(fetchPause);
121 LOG.debug("No data received from fetch. No fetch pause specified - retrying immediately");
126 public boolean isReady() {
131 public boolean isRunning() {
136 * public String getProperty(String name) { return properties.getProperty(name,
140 public void stopConsumer() {
144 public String getBaseUrl() {
145 return generalConfig.getBaseUrl();
148 public String getSDNRUser() {
149 return generalConfig.getSDNRUser() != null ? generalConfig.getSDNRUser() : DEFAULT_SDNRUSER;
152 public String getSDNRPasswd() {
153 return generalConfig.getSDNRPasswd() != null ? generalConfig.getSDNRPasswd() : DEFAULT_SDNRPASSWD;