log information about SSLFactory renewal (apache#12357)

* log infomation about SSLFactory renewal

* update log

* fix typo

pinot-common/src/main/java/org/apache/pinot/common/utils/TlsUtils.java

@@ -433,6 +433,8 @@ static void reloadSslFactoryWhenFileStoreChanges(SSLFactory baseSslFactory,
       String trustStoreType, String trustStorePath, String trustStorePassword,
       String sslContextProtocol, SecureRandom secureRandom)
       throws IOException, URISyntaxException, InterruptedException {
+    LOGGER.info("Enable auto renewal of SSLFactory {} when key store {} or trust store {} changes",
+        baseSslFactory, keyStorePath, trustStorePath);
     WatchService watchService = FileSystems.getDefault().newWatchService();
     Map<WatchKey, Set<Path>> watchKeyPathMap = new HashMap<>();
     registerFile(watchService, watchKeyPathMap, keyStorePath);
@@ -442,10 +444,15 @@ static void reloadSslFactoryWhenFileStoreChanges(SSLFactory baseSslFactory,
       for (WatchEvent<?> event : key.pollEvents()) {
         Path changedFile = (Path) event.context();
         if (watchKeyPathMap.get(key).contains(changedFile)) {
+          LOGGER.info("Detected change in file: {}, try to renew SSLFactory {} "
+              + "(built from key store {} and truststore {})",
+              changedFile, baseSslFactory, keyStorePath, trustStorePath);
           SSLFactory updatedSslFactory = createSSLFactory(
               keyStoreType, keyStorePath, keyStorePassword, trustStoreType, trustStorePath, trustStorePassword,
               sslContextProtocol, secureRandom, false);
           SSLFactoryUtils.reload(baseSslFactory, updatedSslFactory);
+          LOGGER.info("Successfully renewed SSLFactory {} (built from key store {} and truststore {}) "
+                  + "on file {} changes", baseSslFactory, keyStorePath, trustStorePath, changedFile);
         }
       }
       key.reset();
@@ -514,6 +521,9 @@ static SSLFactory createSSLFactory(
       if (trustStoreStream != null) {
         trustStoreStream.close();
       }
+      LOGGER.info("Successfully created SSLFactory {} with key store {} and trust store {}. "
+              + "Key and trust material swappable: {}",
+          sslFactory, keyStorePath, trustStorePath, keyAndTrustMaterialSwappable);
       return sslFactory;
     } catch (Exception e) {
       throw new IllegalStateException(e);