Show throwing linkers as pending rather than idle/failing, fixed modu…

…le dependency

src/main/java/com/machinezoo/foxcache/CacheReport.java

@@ -161,12 +161,17 @@ public void show() {
                     entry.status = CacheStatus.RUNNING;
             } else if (entry.input.blocking())
                 entry.status = CacheStatus.LINKING;
-            else if (entry.snapshot == null)
+            else if (entry.input.exception() != null) {
+                if (EmptyCacheException.caused(entry.input.exception()))
+                    entry.status = CacheStatus.LINKING;
+                else
+                    entry.status = CacheStatus.FAILED;
+            } else if (entry.snapshot == null)
                 entry.status = CacheStatus.EMPTY;
             else if (entry.snapshot.cancelled()
                 && ReactiveDuration.between(entry.snapshot.refreshed(), ReactiveInstant.now()).compareTo(Duration.ofSeconds(3)) < 0)
                 entry.status = CacheStatus.JUST_CANCELLED;
-            else if (entry.input.exception() != null || entry.snapshot.exception() != null)
+            else if (entry.snapshot.exception() != null)
                 entry.status = CacheStatus.FAILED;
             else if (entry.snapshot.hash() == null)
                 entry.status = CacheStatus.EMPTY;

src/main/java/com/machinezoo/foxcache/EmptyCacheException.java

@@ -1,17 +1,14 @@
 // Part of Fox Cache: https://foxcache.machinezoo.com
 package com.machinezoo.foxcache;
 
+import org.apache.commons.lang3.exception.*;
 import com.machinezoo.noexception.*;
 
 public class EmptyCacheException extends RuntimeException {
-	private static final long serialVersionUID = 1L;
-	private static class EmptyCacheExceptionSilencing extends ExceptionHandler {
-		@Override
-		public boolean handle(Throwable exception) {
-			return exception instanceof EmptyCacheException;
-		}
-	}
-	public static ExceptionHandler silence() {
-		return new EmptyCacheExceptionSilencing();
-	}
+    private static final long serialVersionUID = 1L;
+    public static boolean caused(Throwable exception) { return ExceptionUtils.stream(exception).anyMatch(x -> x instanceof EmptyCacheException); }
+    private static class EmptyCacheExceptionSilencing extends ExceptionHandler {
+        @Override public boolean handle(Throwable exception) { return caused(exception); }
+    }
+    public static ExceptionHandler silence() { return new EmptyCacheExceptionSilencing(); }
 }

src/main/java/module-info.java

@@ -23,6 +23,7 @@
     requires one.util.streamex;
     requires com.google.common;
     requires org.apache.commons.lang3;
+    requires org.apache.commons.collections4;
     requires org.apache.commons.io;
     requires org.objenesis;
     requires org.slf4j;