From 2706026b8568cf931902dafbe43738b6a59368dd Mon Sep 17 00:00:00 2001
From: hengsin <hengsin@gmail.com>
Date: Sat, 13 Jun 2020 22:00:04 +0800
Subject: [PATCH] IDEMPIERE-4331 Do not use Hazelcast Cache Service if it is
 standalone (#113)

Use normal map if hazelcast is stand alone
---
 .../src/org/compiere/util/CacheMgt.java       |  6 +++++-
 .../distributed/IClusterService.java          |  8 +++++++
 .../hazelcast/service/ClusterServiceImpl.java | 21 +++++++++++++++++++
 3 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/org.adempiere.base/src/org/compiere/util/CacheMgt.java b/org.adempiere.base/src/org/compiere/util/CacheMgt.java
index 8574d4198f..c2671ce25b 100644
--- a/org.adempiere.base/src/org/compiere/util/CacheMgt.java
+++ b/org.adempiere.base/src/org/compiere/util/CacheMgt.java
@@ -109,7 +109,11 @@ public class CacheMgt
 		{
 			ICacheService provider = Service.locator().locate(ICacheService.class).getService();
 			if (provider != null)
-				map = provider.getMap(name);
+			{
+				IClusterService clusterService = Service.locator().locate(IClusterService.class).getService();
+				if (clusterService != null && !clusterService.isStandAlone())
+					map = provider.getMap(name);
+			}
 		}
 		
 		if (map == null)
diff --git a/org.adempiere.base/src/org/idempiere/distributed/IClusterService.java b/org.adempiere.base/src/org/idempiere/distributed/IClusterService.java
index b38a9aa357..f58c09adb0 100644
--- a/org.adempiere.base/src/org/idempiere/distributed/IClusterService.java
+++ b/org.adempiere.base/src/org/idempiere/distributed/IClusterService.java
@@ -38,4 +38,12 @@ public interface IClusterService {
 	 * @return Map of IClusterMember and Future
 	 */
 	public <V> Map<IClusterMember, Future<V>> execute(Callable<V> task, Collection<IClusterMember> members);
+	
+	/**
+	 * 
+	 * @return true if instance is stand alone
+	 */
+	public default boolean isStandAlone() {
+		return false;
+	}
 }
diff --git a/org.idempiere.hazelcast.service/src/org/idempiere/hazelcast/service/ClusterServiceImpl.java b/org.idempiere.hazelcast.service/src/org/idempiere/hazelcast/service/ClusterServiceImpl.java
index 716312f9e3..68384d3f7c 100644
--- a/org.idempiere.hazelcast.service/src/org/idempiere/hazelcast/service/ClusterServiceImpl.java
+++ b/org.idempiere.hazelcast.service/src/org/idempiere/hazelcast/service/ClusterServiceImpl.java
@@ -27,6 +27,8 @@ import org.idempiere.distributed.IClusterService;
 import com.hazelcast.core.HazelcastInstance;
 import com.hazelcast.core.IExecutorService;
 import com.hazelcast.core.Member;
+import com.hazelcast.instance.HazelcastInstanceImpl;
+import com.hazelcast.instance.HazelcastInstanceProxy;
 
 /**
  * @author hengsin
@@ -114,4 +116,23 @@ public class ClusterServiceImpl implements IClusterService {
 		return null;
 	}
 
+	@Override
+	public boolean isStandAlone() {
+		HazelcastInstance instance = Activator.getHazelcastInstance();
+		if (instance != null) {
+			if (instance instanceof HazelcastInstanceImpl) {
+				HazelcastInstanceImpl impl = (HazelcastInstanceImpl) instance;
+				return impl.node.getJoiner() == null;
+			} else if (instance instanceof HazelcastInstanceProxy) {
+				HazelcastInstanceProxy proxy = (HazelcastInstanceProxy) instance;
+				HazelcastInstanceImpl impl = proxy.getOriginal();
+				return impl.node.getJoiner() == null;
+			} else {
+				return false;
+			}
+		} else {
+			return true;
+		}
+	}
+
 }