Add temp jks file checker

aoe-data-analytics/service-etl-processor/src/main/java/fi/csc/processor/producer/JksFileChecker.java

@@ -0,0 +1,44 @@
+package fi.csc.processor.producer;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.stereotype.Component;
+
+import java.io.FileInputStream;
+import java.security.KeyStore;
+import java.util.Enumeration;
+
+@Component
+public class JksFileChecker implements CommandLineRunner {
+
+    private static final Logger LOG = LoggerFactory.getLogger(JksFileChecker.class.getSimpleName());
+
+
+    @Override
+    public void run(String... args) throws Exception {
+        String trustStorePath = System.getProperty("javax.net.ssl.trustStore");
+        String trustStorePassword = System.getProperty("javax.net.ssl.trustStorePassword");
+
+        if (trustStorePath == null || trustStorePassword == null) {
+            LOG.error("TrustStore properties are not set!");
+            return;
+        }
+
+        try (FileInputStream trustStoreStream = new FileInputStream(trustStorePath)) {
+            KeyStore trustStore = KeyStore.getInstance("JKS");
+            trustStore.load(trustStoreStream, trustStorePassword.toCharArray());
+
+            LOG.info("JKS file loaded successfully!");
+            LOG.info("Aliases in the JKS:");
+
+            Enumeration<String> aliases = trustStore.aliases();
+            while (aliases.hasMoreElements()) {
+                System.out.println(" - " + aliases.nextElement());
+            }
+        } catch (Exception e) {
+            LOG.error("Failed to load JKS file: " + e.getMessage());
+            e.printStackTrace();
+        }
+    }
+}