Improvements

client/pom.xml

@@ -120,8 +120,6 @@
                                 --no-fallback
                                 --allow-incomplete-classpath
                                 -H:IncludeResources=org/jboss/fuse/mvnd/.*
-                                -H:IncludeResources=org/jline/utils/.*
-                                -H:IncludeResources=org/fusesource/jansi/jansi.properties
                                 -H:-ParseRuntimeOptions
                             </buildArgs>
                         </configuration>

client/src/main/java/org/jboss/fuse/mvnd/client/DaemonClientConnection.java

@@ -25,10 +25,12 @@
 import java.util.concurrent.locks.Lock;
 import java.util.concurrent.locks.ReentrantLock;
 import org.jboss.fuse.mvnd.common.DaemonConnection;
+import org.jboss.fuse.mvnd.common.DaemonDiagnostics;
 import org.jboss.fuse.mvnd.common.DaemonException;
 import org.jboss.fuse.mvnd.common.DaemonException.ConnectException;
 import org.jboss.fuse.mvnd.common.DaemonException.StaleAddressException;
 import org.jboss.fuse.mvnd.common.DaemonInfo;
+import org.jboss.fuse.mvnd.common.Layout;
 import org.jboss.fuse.mvnd.common.Message;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -52,16 +54,18 @@ public class DaemonClientConnection implements Closeable {
     private final Thread receiver;
     private final AtomicBoolean running = new AtomicBoolean(true);
     private final AtomicReference<Exception> exception = new AtomicReference<>();
+    private final Layout layout;
 
     public DaemonClientConnection(DaemonConnection connection, DaemonInfo daemon,
-            StaleAddressDetector staleAddressDetector, boolean newDaemon, int maxKeepAliveMs) {
+            StaleAddressDetector staleAddressDetector, boolean newDaemon, int maxKeepAliveMs, Layout layout) {
         this.connection = connection;
         this.daemon = daemon;
         this.staleAddressDetector = staleAddressDetector;
         this.newDaemon = newDaemon;
         this.maxKeepAliveMs = maxKeepAliveMs;
         this.receiver = new Thread(this::doReceive);
         this.receiver.start();
+        this.layout = layout;
     }
 
     public DaemonInfo getDaemon() {
@@ -101,11 +105,12 @@ public Message receive() throws ConnectException, StaleAddressException {
                             + "ms, daemon may have crashed. You may want to check its status using mvnd --status");
                 }
             } catch (Exception e) {
+                DaemonDiagnostics diag = new DaemonDiagnostics(daemon.getUid(), layout);
                 LOG.debug("Problem receiving message to the daemon. Performing 'on failure' operation...");
                 if (!hasReceived && newDaemon) {
-                    throw new ConnectException("Could not receive a message from the daemon.", e);
+                    throw new ConnectException("Could not receive a message from the daemon.\n" + diag.describe(), e);
                 } else if (staleAddressDetector.maybeStaleAddress(e)) {
-                    throw new StaleAddressException("Could not receive a message from the daemon.", e);
+                    throw new StaleAddressException("Could not receive a message from the daemon.\n" + diag.describe(), e);
                 }
             } finally {
                 hasReceived = true;

client/src/main/java/org/jboss/fuse/mvnd/client/DaemonConnector.java

@@ -237,7 +237,7 @@ public DaemonClientConnection startDaemon(DaemonCompatibilitySpec constraint) {
                 throw new DaemonException.InterruptedException(e);
             }
         } while (System.currentTimeMillis() - start < DEFAULT_CONNECT_TIMEOUT);
-        DaemonDiagnostics diag = new DaemonDiagnostics(daemon, layout.daemonLog(daemon));
+        DaemonDiagnostics diag = new DaemonDiagnostics(daemon, layout);
         throw new DaemonException.ConnectException("Timeout waiting to connect to the Maven daemon.\n" + diag.describe());
     }
 
@@ -272,7 +272,7 @@ private String startDaemon() {
             command = String.join(" ", args);
 
             LOGGER.debug("Starting daemon process: uid = {}, workingDir = {}, daemonArgs: {}", uid, workingDir, command);
-            ProcessBuilder.Redirect redirect = ProcessBuilder.Redirect.appendTo(layout.daemonLog(uid + ".out").toFile());
+            ProcessBuilder.Redirect redirect = ProcessBuilder.Redirect.appendTo(layout.daemonOutLog(uid).toFile());
             new ProcessBuilder()
                     .directory(workingDir.toFile())
                     .command(args)
@@ -297,7 +297,7 @@ private DaemonClientConnection connectToDaemonWithId(String daemon, boolean newD
             try {
                 return connectToDaemon(daemonInfo, new CleanupOnStaleAddress(daemonInfo), newDaemon);
             } catch (DaemonException.ConnectException e) {
-                DaemonDiagnostics diag = new DaemonDiagnostics(daemon, layout.daemonLog(daemon));
+                DaemonDiagnostics diag = new DaemonDiagnostics(daemon, layout);
                 throw new DaemonException.ConnectException("Could not connect to the Maven daemon.\n" + diag.describe(), e);
             }
         }
@@ -311,7 +311,7 @@ private DaemonClientConnection connectToDaemon(DaemonInfo daemon,
         try {
             int maxKeepAliveMs = layout.getKeepAliveMs() * layout.getMaxLostKeepAlive();
             DaemonConnection connection = connect(daemon.getAddress());
-            return new DaemonClientConnection(connection, daemon, staleAddressDetector, newDaemon, maxKeepAliveMs);
+            return new DaemonClientConnection(connection, daemon, staleAddressDetector, newDaemon, maxKeepAliveMs, layout);
         } catch (DaemonException.ConnectException e) {
             staleAddressDetector.maybeStaleAddress(e);
             throw e;

common/src/main/java/org/jboss/fuse/mvnd/common/DaemonDiagnostics.java

@@ -18,6 +18,7 @@
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.nio.file.Files;
+import java.nio.file.NoSuchFileException;
 import java.nio.file.Path;
 import java.util.ArrayDeque;
 import java.util.ArrayList;
@@ -34,39 +35,53 @@ public class DaemonDiagnostics {
     private final static int TAIL_SIZE = 20;
 
     private final String uid;
-    private final Path daemonLog;
+    private final Layout layout;
 
-    public DaemonDiagnostics(String uid, Path daemonLog) {
+    public DaemonDiagnostics(String uid, Layout layout) {
         this.uid = uid;
-        this.daemonLog = daemonLog;
+        this.layout = layout;
     }
 
     @Override
     public String toString() {
         return "{"
                 + "uid=" + uid
-                + ", daemonLog=" + daemonLog
+                + ", layout=" + layout
                 + '}';
     }
 
-    private String tailDaemonLog() {
+    public String describe() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("Daemon uid: ").append(uid).append("\n");
+        tail(sb, "log file", layout.daemonLog(uid));
+        tail(sb, "output", layout.daemonOutLog(uid));
+        return sb.toString();
+    }
+
+    static void tail(StringBuilder sb, String name, Path log) {
         try {
-            String tail = tail(daemonLog, TAIL_SIZE);
-            return formatTail(tail);
+            String tail = tail(log);
+            sb.append("  ").append(name).append(": ").append(log).append("\n");
+            sb.append("----- Last  " + TAIL_SIZE + " lines from daemon ").append(name).append(" - ").append(log)
+                    .append(" -----\n");
+            sb.append(tail);
+            sb.append("----- End of the daemon ").append(name).append(" -----\n");
+        } catch (NoSuchFileException e) {
+            sb.append("  no ").append(name).append(" at: ").append(log).append("\n");
         } catch (IOException e) {
-            return "Unable to read from the daemon log file: " + daemonLog + ", because of: " + e.getCause();
+            sb.append("  unable to read from the daemon ").append(name).append(": ").append(log).append(", because of: ")
+                    .append(e);
         }
     }
 
     /**
      * @param  path        to read from tail
-     * @param  maxLines    max lines to read
      * @return             tail content
      * @throws IOException when reading failed
      */
-    static String tail(Path path, int maxLines) throws IOException {
+    static String tail(Path path) throws IOException {
         try (BufferedReader r = Files.newBufferedReader(path)) {
-            return String.join("\n", r.lines().collect(lastN(maxLines)));
+            return String.join("\n", r.lines().collect(lastN(TAIL_SIZE))) + "\n";
         }
     }
 
@@ -83,15 +98,4 @@ static String tail(Path path, int maxLines) throws IOException {
         }, ArrayList::new);
     }
 
-    private String formatTail(String tail) {
-        return "----- Last  " + TAIL_SIZE + " lines from daemon log file - " + daemonLog + " -----\n"
-                + tail
-                + "----- End of the daemon log -----\n";
-    }
-
-    public String describe() {
-        return "Daemon uid: " + uid + "\n"
-                + "  log file: " + daemonLog + "\n"
-                + tailDaemonLog();
-    }
 }

common/src/main/java/org/jboss/fuse/mvnd/common/Layout.java

@@ -56,6 +56,10 @@ public Path daemonLog(String daemon) {
         return mavenHome.resolve("daemon/daemon-" + daemon + ".log");
     }
 
+    public Path daemonOutLog(String daemon) {
+        return mavenHome.resolve("daemon/daemon-" + daemon + ".out.log");
+    }
+
     public Path multiModuleProjectDirectory() {
         return multiModuleProjectDirectory;
     }

common/src/main/java/org/jboss/fuse/mvnd/common/logging/TerminalOutput.java

@@ -190,7 +190,7 @@ void readInputLoop() {
                     break;
                 }
                 if (c == '+' || c == '-' || c == CTRL_L || c == CTRL_M) {
-                    queue.add(new Event(EventType.INPUT, null, Character.toString(c)));
+                    queue.add(new Event(EventType.INPUT, null, Character.toString((char) c)));
                 }
             }
         } catch (InterruptedIOException e) {
@@ -257,7 +257,7 @@ void displayLoop() {
                             linesPerProject = Math.max(0, linesPerProject - 1);
                             break;
                         case CTRL_L:
-                            display.update(List.of(), 0);
+                            display.update(Collections.emptyList(), 0);
                             break;
                         case CTRL_M:
                             displayDone = !displayDone;

pom.xml

@@ -40,7 +40,7 @@
         <graalvm.version>20.2.0</graalvm.version>
         <groovy.version>3.0.0</groovy.version>
         <jakarta.inject.version>1.0</jakarta.inject.version>
-        <jline.version>3.17.0</jline.version>
+        <jline.version>3.17.1</jline.version>
         <junit.jupiter.version>5.6.0</junit.jupiter.version>
         <logback.version>1.2.3</logback.version>
         <maven.version>3.6.3</maven.version>