Add RequestResponseContextHolder which hold the current response and

request.

Signed-off-by: SirWayne <dennis.melzer@bosch-si.com>

hawkbit-rest-core/src/main/java/org/eclipse/hawkbit/rest/util/FilterHttpResponse.java

@@ -0,0 +1,54 @@
+/**
+ * Copyright (c) 2015 Bosch Software Innovations GmbH and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.eclipse.hawkbit.rest.util;
+
+import java.io.IOException;
+
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServletResponse;
+
+/**
+ * Filter is needed to autowire the {@link HttpServletResponse}.
+ * 
+ */
+public class FilterHttpResponse implements Filter {
+
+    private ThreadLocal<HttpServletResponse> threadLocalResponse = new ThreadLocal<>();
+
+    @Override
+    public void init(final FilterConfig filterConfig) throws ServletException {
+        // not needed
+    }
+
+    @Override
+    public void doFilter(final ServletRequest request, final ServletResponse response, final FilterChain chain)
+            throws IOException, ServletException {
+        try {
+            threadLocalResponse.set((HttpServletResponse) response);
+            chain.doFilter(request, response);
+        } finally {
+            threadLocalResponse.remove();
+        }
+    }
+
+    public HttpServletResponse getHttpServletReponse() {
+        return threadLocalResponse.get();
+    }
+
+    @Override
+    public void destroy() {
+        threadLocalResponse = null;
+    }
+
+}

hawkbit-rest-core/src/main/java/org/eclipse/hawkbit/rest/util/HttpResponseFactoryBean.java

@@ -0,0 +1,55 @@
+/**
+ * Copyright (c) 2015 Bosch Software Innovations GmbH and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.eclipse.hawkbit.rest.util;
+
+import javax.servlet.http.HttpServletResponse;
+
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.FactoryBean;
+import org.springframework.beans.factory.NamedBean;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.ApplicationContextAware;
+
+/**
+ * 
+ * Factory bean to autowire the {@link HttpServletResponse}.
+ * 
+ */
+public class HttpResponseFactoryBean implements FactoryBean<HttpServletResponse>, ApplicationContextAware, NamedBean {
+
+    public static final String FACTORY_BEAN_NAME = "httpResponseFactoryBean";
+
+    private ApplicationContext applicationContext;
+
+    @Override
+    public HttpServletResponse getObject() throws Exception {
+        return applicationContext.getBean(FilterHttpResponse.class).getHttpServletReponse();
+    }
+
+    @Override
+    public Class<?> getObjectType() {
+        return HttpServletResponse.class;
+    }
+
+    @Override
+    public boolean isSingleton() {
+        return false;
+    }
+
+    @Override
+    public void setApplicationContext(final ApplicationContext applicationContext) throws BeansException {
+        this.applicationContext = applicationContext;
+    }
+
+    @Override
+    public String getBeanName() {
+        return FACTORY_BEAN_NAME;
+    }
+
+}

hawkbit-rest-core/src/main/java/org/eclipse/hawkbit/rest/util/RequestResponseContextHolder.java

@@ -0,0 +1,35 @@
+/**
+ * Copyright (c) 2011-2016 Bosch Software Innovations GmbH, Germany. All rights reserved.
+ */
+package org.eclipse.hawkbit.rest.util;
+
+import javax.annotation.Resource;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.springframework.beans.factory.annotation.Autowired;
+
+/**
+ * Copyright (c) 2015 Bosch Software Innovations GmbH and others.
+ *
+ * All rights reserved. This program and the accompanying materials are made
+ * available under the terms of the Eclipse Public License v1.0 which
+ * accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ */
+public class RequestResponseContextHolder {
+
+    @Autowired
+    private HttpServletRequest httpServletRequest;
+
+    @Resource(name = HttpResponseFactoryBean.FACTORY_BEAN_NAME)
+    private HttpServletResponse httpServletResponse;
+
+    public HttpServletRequest getHttpServletRequest() {
+        return httpServletRequest;
+    }
+
+    public HttpServletResponse getHttpServletResponse() {
+        return httpServletResponse;
+    }
+}