Architecture refactoring - Stateless management server - Spring Framework initiatives, add missing files

client/tomcatconf/applicationContext.xml.in

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+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns:context="http://www.springframework.org/schema/context"
+	xsi:schemaLocation="http://www.springframework.org/schema/beans 
+		http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
+		http://www.springframework.org/schema/context 
+		http://www.springframework.org/schema/context/spring-context-3.0.xsd">
+
+	<context:annotation-config />          
+    <context:component-scan base-package="com.cloud.cluster" />
+</beans>

server/src/com/cloud/cluster/ClusterEventBus.java

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+package com.cloud.cluster;
+
+import java.io.Serializable;
+
+import javax.annotation.PostConstruct;
+
+import org.springframework.stereotype.Component;
+
+import com.cloud.utils.events.EventBusBase;
+import com.cloud.utils.events.PublishScope;
+
+@Component
+public class ClusterEventBus extends EventBusBase {
+	
+	@PostConstruct
+	public void init() {
+	}
+	
+	@Override
+	public void publish(String subject, PublishScope scope, Object sender,
+		Serializable args) {
+		super.publish(subject, scope, sender, args);
+	}
+}

utils/src/com/cloud/utils/component/ComponentContext.java

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+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// the License.  You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+package com.cloud.utils.component;
+
+import org.springframework.context.ApplicationContext;
+
+/**
+ * 
+ * ComponentContext.setApplication() and ComponentContext.getApplication()
+ * are not recommended to be used outside, they exist to help wire Spring Framework
+ *
+ */
+public class ComponentContext {
+	private static ApplicationContext s_appContext;  
+
+    public static void setApplicationContext(ApplicationContext applicationContext) {  
+        s_appContext = applicationContext;  
+    }  
+  
+    public static ApplicationContext getApplicationContext() {  
+        return s_appContext;  
+    }  
+    
+    public <T> T getCompanent(String name) {
+    	assert(s_appContext != null);
+    	return (T)s_appContext.getBean(name);
+    }
+}