fix: adjusted error logging to log a throwable as a separate parameter

Signed-off-by: Matt Peterson <[email protected]>

Author: mattp-swirldslabs

server/src/main/java/com/hedera/block/server/Server.java

@@ -86,7 +86,7 @@ public static void main(final String[] args) {
                     .start();
 
         } catch (IOException e) {
-            LOGGER.log(System.Logger.Level.ERROR, "There was an exception starting the server: " + e.getMessage());
+            LOGGER.log(System.Logger.Level.ERROR, "An exception was thrown starting the server", e);
             throw new RuntimeException(e);
         }
     }

server/src/main/java/com/hedera/block/server/consumer/LiveStreamObserverImpl.java

@@ -23,7 +23,6 @@
 /**
  * The LiveStreamObserverImpl class implements the LiveStreamObserver interface to pass blocks to the downstream consumer
  * via the notify method and manage the bidirectional stream to the consumer via the onNext, onError, and onCompleted methods.
- *
  */
 public class LiveStreamObserverImpl implements LiveStreamObserver<BlockStreamServiceGrpcProto.Block, BlockStreamServiceGrpcProto.BlockResponse> {
 
@@ -41,7 +40,6 @@ public class LiveStreamObserverImpl implements LiveStreamObserver<BlockStreamSer
      *
      * @param mediator the mediator
      * @param responseStreamObserver the response stream observer
-     *
      */
     public LiveStreamObserverImpl(
             final long timeoutThresholdMillis,
@@ -102,7 +100,7 @@ public void onNext(final BlockStreamServiceGrpcProto.BlockResponse blockResponse
      */
     @Override
     public void onError(final Throwable t) {
-        LOGGER.log(System.Logger.Level.ERROR, t.getMessage());
+        LOGGER.log(System.Logger.Level.ERROR, t);
         mediator.unsubscribe(this);
     }
 

server/src/main/java/com/hedera/block/server/mediator/LiveStreamMediatorImpl.java

@@ -40,7 +40,6 @@ public class LiveStreamMediatorImpl implements StreamMediator<BlockStreamService
      * Constructor for the LiveStreamMediatorImpl class.
      *
      * @param blockPersistenceHandler the block persistence handler
-     *
      */
     public LiveStreamMediatorImpl(final BlockPersistenceHandler<BlockStreamServiceGrpcProto.Block> blockPersistenceHandler) {
         this.blockPersistenceHandler = blockPersistenceHandler;
@@ -86,6 +85,7 @@ public boolean isSubscribed(final LiveStreamObserver<BlockStreamServiceGrpcProto
      */
     @Override
     public void unsubscribeAll() {
+        LOGGER.log(System.Logger.Level.DEBUG, "Unsubscribing all observers from the mediator");
         subscribers.clear();
     }
 
@@ -97,6 +97,8 @@ public void unsubscribeAll() {
     @Override
     public void notifyAll(final BlockStreamServiceGrpcProto.Block block) {
 
+        LOGGER.log(System.Logger.Level.DEBUG, "Notifying " + subscribers.size() + " observers of a new block");
+
         // Proxy the block to all live stream subscribers
         for (final LiveStreamObserver<BlockStreamServiceGrpcProto.Block, BlockStreamServiceGrpcProto.BlockResponse> subscriber : subscribers) {
             subscriber.notify(block);

server/src/main/java/com/hedera/block/server/persistence/storage/FileSystemBlockStorage.java

@@ -67,7 +67,7 @@ public FileSystemBlockStorage(final String key, final Config config) throws IOEx
             Files.createDirectory(blockNodeRootPath);
             LOGGER.log(System.Logger.Level.INFO, "Created block node root directory: " + blockNodeRootPath);
         } else {
-            LOGGER.log(System.Logger.Level.INFO, "Block node root directory exists: " + blockNodeRootPath);
+            LOGGER.log(System.Logger.Level.INFO, "Using existing block node root directory: " + blockNodeRootPath);
         }
     }
 
@@ -84,12 +84,11 @@ public Optional<Long> write(final BlockStreamServiceGrpcProto.Block block) {
 
         try (FileOutputStream fos = new FileOutputStream(fullPath)) {
             block.writeTo(fos);
-            LOGGER.log(System.Logger.Level.DEBUG, "Wrote the block file: " + fullPath);
+            LOGGER.log(System.Logger.Level.DEBUG, "Successfully wrote the block file: " + fullPath);
 
             return Optional.of(id);
-        }
-        catch (IOException e) {
-            LOGGER.log(System.Logger.Level.ERROR, "Error writing the protobuf to file: " + e.getMessage());
+        } catch (IOException e) {
+            LOGGER.log(System.Logger.Level.ERROR, "Error writing the protobuf to a file", e);
             return Optional.empty();
         }
     }
@@ -110,7 +109,7 @@ private Optional<BlockStreamServiceGrpcProto.Block> read(final String filePath)
         try (FileInputStream fis = new FileInputStream(filePath)) {
             return Optional.of(BlockStreamServiceGrpcProto.Block.parseFrom(fis));
         } catch (FileNotFoundException io) {
-            LOGGER.log(System.Logger.Level.ERROR, "Error reading file: " + filePath);
+            LOGGER.log(System.Logger.Level.ERROR, "Error reading file: " + filePath, io);
             return Optional.empty();
         } catch (IOException io) {
             throw new RuntimeException("Error reading file: " + filePath, io);

server/src/main/java/com/hedera/block/server/producer/ProducerBlockStreamObserver.java

@@ -28,9 +28,10 @@
  */
 public class ProducerBlockStreamObserver implements StreamObserver<BlockStreamServiceGrpcProto.Block> {
 
+    private final System.Logger LOGGER = System.getLogger(getClass().getName());
+
     private final StreamMediator<BlockStreamServiceGrpcProto.Block, BlockStreamServiceGrpcProto.BlockResponse> streamMediator;
     private final StreamObserver<BlockStreamServiceGrpcProto.BlockResponse> responseStreamObserver;
-    private final System.Logger LOGGER = System.getLogger(getClass().getName());
 
     /**
      * Constructor for the ProducerBlockStreamObserver class.  It is responsible for calling the mediator with blocks
@@ -67,7 +68,7 @@ public void onNext(final BlockStreamServiceGrpcProto.Block block) {
      */
     @Override
     public void onError(final Throwable t) {
-        LOGGER.log(System.Logger.Level.ERROR, "onError method called with the exception: " + t.getMessage());
+        LOGGER.log(System.Logger.Level.ERROR, "onError method invoked with an exception", t);
     }
 
     /**