1 files changed, 23 insertions, 26 deletions

diff --git a/kafka-sandbox/src/main/java/examples/ProducerExample.java b/kafka-sandbox/src/main/java/examples/ProducerExample.java
index 3d185cd..26879d3 100644
--- a/kafka-sandbox/src/main/java/examples/ProducerExample.java
+++ b/kafka-sandbox/src/main/java/examples/ProducerExample.java
@@ -1,55 +1,52 @@
 package examples;
 
-import org.apache.kafka.clients.producer.*;
+import org.apache.kafka.clients.producer.KafkaProducer;
+import org.apache.kafka.clients.producer.ProducerRecord;
 
-import java.io.*;
-import java.nio.file.*;
-import java.util.*;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.util.Properties;
+import java.util.Random;
 
 public class ProducerExample {
-
-    public static void main(final String[] args) throws IOException {
+    public static void main(String[] args) throws IOException {
         if (args.length != 1) {
             System.out.println("Please provide the configuration file path as a command line argument");
             System.exit(1);
         }
 
         // Load producer configuration settings from a local file
-        final Properties props = loadConfig(args[0]);
-        final String topic = "purchases";
-
-        String[] users = {"eabara", "jsmith", "sgarcia", "jbernard", "htanaka", "awalther"};
-        String[] items = {"book", "alarm clock", "t-shirts", "gift card", "batteries"};
-        try (final Producer<String, String> producer = new KafkaProducer<>(props)) {
-            final Random rnd = new Random();
-            final var numMessages = 10L;
+        var props = loadConfig(args[0]);
+        var topic = "purchases";
+
+        var users = new String[]{"eabara", "jsmith", "sgarcia", "jbernard", "htanaka", "awalther"};
+        var domains = new String[]{"gmail.com", "yahoo.com", "sol.no", "online.no", "hotmail.com"};
+        try (var producer = new KafkaProducer<>(props)) {
+            var rnd = new Random();
+            var numMessages = 10L;
             for (var i = 0L; i < numMessages; i++) {
-                String user = users[rnd.nextInt(users.length)];
-                String item = items[rnd.nextInt(items.length)];
+                var user = users[rnd.nextInt(users.length)];
+                var domain = domains[rnd.nextInt(domains.length)];
 
                 producer.send(
-                        new ProducerRecord<>(topic, user, item),
+                        new ProducerRecord<>(topic, user, user + "@" + domain),
                         (event, ex) -> {
                             if (ex != null)
                                 ex.printStackTrace();
                             else
-                                System.out.printf("Produced event to topic %s: key = %-10s value = %s%n", topic, user, item);
+                                System.out.printf("Produced event to topic %s: key = %-10s value = %s%n", topic, user, domain);
                         });
             }
             System.out.printf("%s events were produced to topic %s%n", numMessages, topic);
         }
-
     }
 
     // We'll reuse this function to load properties from the Consumer as well
-    public static Properties loadConfig(final String configFile) throws IOException {
-        if (!Files.exists(Paths.get(configFile))) {
-            throw new IOException(configFile + " not found.");
-        }
-        final Properties cfg = new Properties();
-        try (InputStream inputStream = new FileInputStream(configFile)) {
+    public static Properties loadConfig(String configFile) throws IOException {
+        try (var inputStream = new FileInputStream(configFile)) {
+            var cfg = new Properties();
             cfg.load(inputStream);
+            return cfg;
         }
-        return cfg;
     }
 }