From 12c41ea2ae231492b7e6864584968639fcfe65a3 Mon Sep 17 00:00:00 2001
From: "William E. Seyler" <bill@billandlizz.com>
Date: Wed, 7 Feb 2024 11:55:05 -0500
Subject: [PATCH] =?UTF-8?q?Revert=20"[BACKLOG-39783]=20-=20Implemented=20a?=
 =?UTF-8?q?=20PentahoSystemPublisher=20that=20allows=20ar=E2=80=A6"?=
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---
 .../engine/core/system/PentahoSystem.java     |  2 +-
 .../core/system/PentahoSystemPublisher.java   | 66 -------------------
 .../system/PentahoSystemPublisherTest.java    | 23 -------
 3 files changed, 1 insertion(+), 90 deletions(-)
 delete mode 100644 core/src/main/java/org/pentaho/platform/engine/core/system/PentahoSystemPublisher.java
 delete mode 100644 core/src/test/java/org/pentaho/platform/engine/core/system/PentahoSystemPublisherTest.java

diff --git a/core/src/main/java/org/pentaho/platform/engine/core/system/PentahoSystem.java b/core/src/main/java/org/pentaho/platform/engine/core/system/PentahoSystem.java
index 49a4cb7acd1..66fb8d9882a 100644
--- a/core/src/main/java/org/pentaho/platform/engine/core/system/PentahoSystem.java
+++ b/core/src/main/java/org/pentaho/platform/engine/core/system/PentahoSystem.java
@@ -400,7 +400,7 @@ public static boolean init( final IApplicationContext pApplicationContext, final
     if ( debug ) {
       Logger.debug( PentahoSystem.class, "PentahoSystem Init Complete" ); //$NON-NLS-1$
     }
-    PentahoSystemPublisher.getInstance().publish( PentahoSystemPublisher.START_UP_TOPIC, true );
+
     return true;
   }
 
diff --git a/core/src/main/java/org/pentaho/platform/engine/core/system/PentahoSystemPublisher.java b/core/src/main/java/org/pentaho/platform/engine/core/system/PentahoSystemPublisher.java
deleted file mode 100644
index f3a4671f9e5..00000000000
--- a/core/src/main/java/org/pentaho/platform/engine/core/system/PentahoSystemPublisher.java
+++ /dev/null
@@ -1,66 +0,0 @@
-/*!
- *
- * This program is free software; you can redistribute it and/or modify it under the
- * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
- * Foundation.
- *
- * You should have received a copy of the GNU Lesser General Public License along with this
- * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
- * or from the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
- * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- * See the GNU Lesser General Public License for more details.
- *
- *
- * Copyright (c) 2002-2024 Hitachi Vantara. All rights reserved.
- *
- */
-
-package org.pentaho.platform.engine.core.system;
-
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.function.Consumer;
-
-public class PentahoSystemPublisher {
-  public static final String START_UP_TOPIC = "system_startup";
-  public static final String SHUT_DOWN_TOPIC = "system_shutdown";
-  private final Map<String, ArrayList<Consumer<?>>> topicsSubscribers = new HashMap<>();
-  private static PentahoSystemPublisher instance = null;
-
-  public static PentahoSystemPublisher getInstance() {
-    if ( instance == null ) {
-      instance = new PentahoSystemPublisher();
-    }
-    return instance;
-  }
-
-  public int topicCount() {
-    return topicsSubscribers.size();
-  }
-
-  public <T> void publish( String topic, T value ) {
-    ArrayList<Consumer<?>> subscribers = topicsSubscribers.get( topic );
-    if ( subscribers == null ) {
-      return;
-    }
-
-    for ( Consumer subscriberConsumer : subscribers ) {
-      subscriberConsumer.accept( value );
-    }
-  }
-
-  public synchronized <T> void subscribe( String topicName, Consumer<T> subscriberCallback ) {
-    ArrayList<Consumer<?>> subscribers = topicsSubscribers.get( topicName );
-    if ( subscribers == null ) {
-      subscribers = new ArrayList<>();
-      subscribers.add( subscriberCallback );
-      topicsSubscribers.put( topicName, subscribers );
-    } else {
-      subscribers.add( subscriberCallback );
-    }
-  }
-}
diff --git a/core/src/test/java/org/pentaho/platform/engine/core/system/PentahoSystemPublisherTest.java b/core/src/test/java/org/pentaho/platform/engine/core/system/PentahoSystemPublisherTest.java
deleted file mode 100644
index 871cb5661c8..00000000000
--- a/core/src/test/java/org/pentaho/platform/engine/core/system/PentahoSystemPublisherTest.java
+++ /dev/null
@@ -1,23 +0,0 @@
-package org.pentaho.platform.engine.core.system;
-
-import org.junit.Assert;
-import org.junit.Test;
-
-public class PentahoSystemPublisherTest {
-  @Test
-  public void subscribeTest() {
-    PentahoSystemPublisher.getInstance().subscribe( PentahoSystemPublisher.START_UP_TOPIC, this::startupSubscriber );
-    PentahoSystemPublisher.getInstance().subscribe( PentahoSystemPublisher.SHUT_DOWN_TOPIC, this::shutdownSubscriber );
-    Assert.assertEquals( 2,  PentahoSystemPublisher.getInstance().topicCount() );
-    PentahoSystemPublisher.getInstance().publish( PentahoSystemPublisher.START_UP_TOPIC, true );
-    PentahoSystemPublisher.getInstance().publish( PentahoSystemPublisher.SHUT_DOWN_TOPIC, true );
-  }
-
-  private void shutdownSubscriber( boolean isStopping ) {
-    Assert.assertTrue( isStopping );
-  }
-
-  public void startupSubscriber( boolean isStarting ) {
-    Assert.assertTrue( isStarting );
-  }
-}