ICS sample producer and consumer

[nonrtric.git] / sample-services / ics-producer-consumer / producer / src / main / java / com / demo / producer / producer / SimpleProducer.java

diff --git a/sample-services/ics-producer-consumer/producer/src/main/java/com/demo/producer/producer/SimpleProducer.java b/sample-services/ics-producer-consumer/producer/src/main/java/com/demo/producer/producer/SimpleProducer.java
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+++ b/sample-services/ics-producer-consumer/producer/src/main/java/com/demo/producer/producer/SimpleProducer.java
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+/*-
+ * ========================LICENSE_START=================================
+ * O-RAN-SC
+ *
+ * Copyright (C) 2024: OpenInfra Foundation Europe
+ *
+ * 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.
+ * ========================LICENSE_END===================================
+ */
+package com.demo.producer.producer;
+
+import java.util.UUID;
+import java.util.Properties;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import org.apache.kafka.clients.producer.KafkaProducer;
+import org.apache.kafka.clients.producer.ProducerRecord;
+import org.json.simple.JSONObject;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+import com.demo.producer.messages.AbstractSimpleKafka;
+import com.demo.producer.messages.KafkaMessageHandler;
+import com.demo.producer.messages.MessageHelper;
+import com.demo.producer.messages.PropertiesHelper;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Component
+@Getter
+@Setter
+public class SimpleProducer extends AbstractSimpleKafka {
+    private static final Logger log = LoggerFactory.getLogger(SimpleProducer.class);
+
+    @Value("${vars.time:1000}")
+    private int TIME;
+
+    private KafkaProducer<String, String> kafkaProducer;
+    private final AtomicBoolean closed = new AtomicBoolean(false);
+
+    public void run(String topicName, int numberOfMessages, KafkaMessageHandler callback) throws Exception {
+        for (int i = 0; i < numberOfMessages; i++) {
+            String key = UUID.randomUUID().toString();
+            String message = MessageHelper.getRandomString();
+            if (this.getTopicName() == null) {
+                this.setTopicName(topicName);
+            }
+            this.send(topicName, key, message);
+            Thread.sleep(TIME);
+        }
+        this.shutdown();
+    }
+
+    public void runAlways(String topicName, KafkaMessageHandler callback) throws Exception {
+        while (true) {
+            String key = UUID.randomUUID().toString();
+            String message = MessageHelper.getRandomString();
+            this.send(topicName, key, message);
+            Thread.sleep(TIME);
+        }
+    }
+
+    private String topicName = null;
+
+    private void setTopicName(String topicName) {
+        this.topicName = topicName;
+    }
+
+    private String getTopicName() {
+        return this.topicName;
+    }
+
+    protected void send(String topicName, String key, String message) throws Exception {
+        String source = SimpleProducer.class.getName();
+        ProducerRecord<String, String> producerRecord = new ProducerRecord<>(topicName, key, message);
+        JSONObject obj = MessageHelper.getMessageLogEntryJSON(source, topicName, key, message);
+        log.info(obj.toJSONString());
+        getKafkaProducer().send(producerRecord);
+    }
+
+    private KafkaProducer<String, String> getKafkaProducer() throws Exception {
+        if (this.kafkaProducer == null) {
+            Properties props = PropertiesHelper.getProperties();
+            this.kafkaProducer = new KafkaProducer<>(props);
+        }
+        return this.kafkaProducer;
+    }
+
+    public void shutdown(){
+        closed.set(true);
+        try {
+            log.info(MessageHelper.getSimpleJSONObject("Shutting down producer").toJSONString());
+            getKafkaProducer().close();
+        } catch (Exception e) {
+            log.error("Error shutting down the Producer ", e.getMessage());
+        }
+
+    }
+}