PR for combined changes from kenny+alpha+crowetic for release candidate

README.md

@@ -43,4 +43,3 @@ https://qortal.dev - secondary and development focused website with links to man
 https://wiki.qortal.org - community built and managed wiki with detailed information regarding the project
 
 links to telegram and discord communities are at the top of https://qortal.org as well. 
-

src/main/java/org/qortal/ApplyRestart.java

@@ -43,7 +43,7 @@ public class ApplyRestart {
 	private static final String JAVA_TOOL_OPTIONS_NAME = "JAVA_TOOL_OPTIONS";
 	private static final String JAVA_TOOL_OPTIONS_VALUE = "";
 
-	private static final long CHECK_INTERVAL = 10 * 1000L; // ms
+	private static final long CHECK_INTERVAL = 30 * 1000L; // ms
 	private static final int MAX_ATTEMPTS = 12;
 
 	public static void main(String[] args) {
@@ -56,27 +56,27 @@ public static void main(String[] args) {
 		else
 			Settings.getInstance();
 
-		LOGGER.info("Applying restart...");
+		LOGGER.info("Applying restart this can take up to 5 minutes...");
 
 		// Shutdown node using API
 		if (!shutdownNode())
 			return;
 
 		try {
 			// Give some time for shutdown
-			TimeUnit.SECONDS.sleep(30);
+			TimeUnit.SECONDS.sleep(60);
 
 			// Remove blockchain lock if exist
 			ReentrantLock blockchainLock = Controller.getInstance().getBlockchainLock();
 			if (blockchainLock.isLocked())
 				blockchainLock.unlock();
 
-			// Remove blockchain lock file if exist
+			// Remove blockchain lock file if still exist
 			TimeUnit.SECONDS.sleep(60);
 			deleteLock();
 
 			// Restart node
-			TimeUnit.SECONDS.sleep(30);
+			TimeUnit.SECONDS.sleep(15);
 			restartNode(args);
 
 			LOGGER.info("Restarting...");
@@ -117,10 +117,17 @@ private static boolean shutdownNode() {
 			String response = ApiRequest.perform(baseUri + "admin/stop", params);
 			if (response == null) {
 				// No response - consider node shut down
+				try {
+					TimeUnit.SECONDS.sleep(30);
+				} catch (InterruptedException e) {
+					throw new RuntimeException(e);
+				}
+
 				if (apiKeyNewlyGenerated) {
 					// API key was newly generated for restarting node, so we need to remove it
 					ApplyRestart.removeGeneratedApiKey();
 				}
+
 				return true;
 			}
 
@@ -171,7 +178,7 @@ private static void deleteLock() {
 			LOGGER.debug("Lockfile is: {}", lockFile);
 			FileUtils.forceDelete(FileUtils.getFile(lockFile));
 		} catch (IOException e) {
-			LOGGER.error("Error deleting blockchain lock file: {}", e.getMessage());
+			LOGGER.debug("Error deleting blockchain lock file: {}", e.getMessage());
 		}
 	}
 

src/main/java/org/qortal/controller/Controller.java

@@ -579,26 +579,28 @@ public void run() {
 		// If GUI is enabled, we're no longer starting up but actually running now
 		Gui.getInstance().notifyRunning();
 
-		// Check every 10 minutes if we have enough connected peers
-		Timer checkConnectedPeers = new Timer();
-
-		checkConnectedPeers.schedule(new TimerTask() {
-			@Override
-			public void run() {
-				// Get the connected peers
-				int myConnectedPeers = Network.getInstance().getImmutableHandshakedPeers().size();
-				LOGGER.debug("Node have {} connected peers", myConnectedPeers);
-				if (myConnectedPeers == 0) {
-					// Restart node if we have 0 peers
-					LOGGER.info("Node have no connected peers, restarting node");
-					try {
-						RestartNode.attemptToRestart();
-					} catch (Exception e) {
-						LOGGER.error("Unable to restart the node", e);
+		if (Settings.getInstance().isAutoRestartEnabled()) {
+			// Check every 10 minutes if we have enough connected peers
+			Timer checkConnectedPeers = new Timer();
+
+			checkConnectedPeers.schedule(new TimerTask() {
+				@Override
+				public void run() {
+					// Get the connected peers
+					int myConnectedPeers = Network.getInstance().getImmutableHandshakedPeers().size();
+					LOGGER.debug("Node have {} connected peers", myConnectedPeers);
+					if (myConnectedPeers == 0) {
+						// Restart node if we have 0 peers
+						LOGGER.info("Node have no connected peers, restarting node");
+						try {
+							RestartNode.attemptToRestart();
+						} catch (Exception e) {
+							LOGGER.error("Unable to restart the node", e);
+						}
 					}
 				}
-			}
-		}, 10*60*1000, 10*60*1000);
+			}, 10*60*1000, 10*60*1000);
+		}
 
 		// Check every 10 minutes to see if the block minter is running
 		Timer checkBlockMinter = new Timer();

src/main/java/org/qortal/repository/hsqldb/HSQLDBCacheUtils.java

@@ -12,6 +12,7 @@
 
 import java.sql.ResultSet;
 import java.sql.SQLException;
+import java.sql.SQLNonTransientConnectionException;
 import java.sql.Statement;
 import java.time.format.DateTimeFormatter;
 import java.util.AbstractMap;
@@ -355,9 +356,7 @@ private static boolean passQuery(Predicate<String> predicate, ArbitraryResourceD
      *
      * @return the data cache
      */
-    public static ArbitraryResourceCache startCaching(int priorityRequested, int frequency, HSQLDBRepository respository) {
-
-        final ArbitraryResourceCache cache = ArbitraryResourceCache.getInstance();
+    public static void startCaching(int priorityRequested, int frequency, HSQLDBRepository respository) {
 
         // ensure priority is in between 1-10
         final int priority = Math.max(0, Math.min(10, priorityRequested));
@@ -388,8 +387,6 @@ public void run() {
 
         // delay 1 second
         timer.scheduleAtFixedRate(task, 1000, frequency * 1000);
-
-        return cache;
     }
 
     /**
@@ -418,6 +415,9 @@ public static void fillCache(ArbitraryResourceCache cache, HSQLDBRepository repo
 
             fillNamepMap(cache.getLevelByName(), repository);
         }
+        catch (SQLNonTransientConnectionException e ) {
+            LOGGER.warn("Connection problems. Retry later.");
+        }
         catch (Exception e) {
             LOGGER.error(e.getMessage(), e);
         }

src/main/java/org/qortal/settings/Settings.java

@@ -114,6 +114,8 @@ public class Settings {
 
 	/** Whether we check, fetch and install auto-updates */
 	private boolean autoUpdateEnabled = true;
+	/** Whether we check, restart node without connected peers */
+	private boolean autoRestartEnabled = false;
 	/** How long between repository backups (ms), or 0 if disabled. */
 	private long repositoryBackupInterval = 0; // ms
 	/** Whether to show a notification when we backup repository. */
@@ -406,22 +408,22 @@ public class Settings {
 	 * The thread priority (1 is lowest, 10 is highest) of the threads used for network peer connections. This is the
 	 * main thread connecting to a peer in the network.
 	 */
-    private int networkThreadPriority = 5;
+    private int networkThreadPriority = 7;
 
 	/**
 	 * The Handshake Thread Priority
 	 *
 	 * The thread priority (1 i slowest, 10 is highest) of the threads used for peer handshake messaging. This is a
 	 * secondary thread to exchange status messaging to a peer in the network.
 	 */
-	private int handshakeThreadPriority = 5;
+	private int handshakeThreadPriority = 7;
 
 	/**
 	 * Pruning Thread Priority
 	 *
 	 * The thread priority (1 is lowest, 10 is highest) of the threads used for database pruning and trimming.
 	 */
-	private int pruningThreadPriority = 1;
+	private int pruningThreadPriority = 2;
 
 	/**
 	 * Sychronizer Thread Priority
@@ -973,6 +975,10 @@ public boolean isAutoUpdateEnabled() {
 		return this.autoUpdateEnabled;
 	}
 
+	public boolean isAutoRestartEnabled() {
+		return this.autoRestartEnabled;
+	}
+
 	public String[] getAutoUpdateRepos() {
 		return this.autoUpdateRepos;
 	}