1 files changed, 63 insertions, 0 deletions
diff --git a/sandbox/old/contrib/runtime-webapp/webapp-api/src/main/java/org/apache/tuscany/runtime/webapp/TuscanyFilter.java b/sandbox/old/contrib/runtime-webapp/webapp-api/src/main/java/org/apache/tuscany/runtime/webapp/TuscanyFilter.java
new file mode 100644
index 0000000000..e1433014b2
--- /dev/null
+++ b/sandbox/old/contrib/runtime-webapp/webapp-api/src/main/java/org/apache/tuscany/runtime/webapp/TuscanyFilter.java
@@ -0,0 +1,63 @@
+/*
+ * 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
+ * with 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 org.apache.tuscany.runtime.webapp;
+
+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.ServletContext;
+
+import static org.apache.tuscany.runtime.webapp.Constants.RUNTIME_ATTRIBUTE;
+
+/**
+ * Maps an incoming request and the current composite context to the composite component for the web application. This
+ * filter must be applied to all web application urls that execute unmanaged code (e.g. JSPs and Servlets) which
+ * accesses the Tuscany runtime.
+ *
+ * @version $Rev$ $Date$
+ */
+public class TuscanyFilter implements Filter {
+    private WebappRuntime runtime;
+
+    public void init(FilterConfig config) throws ServletException {
+        ServletContext servletContext = config.getServletContext();
+        runtime = (WebappRuntime) servletContext.getAttribute(RUNTIME_ATTRIBUTE);
+        if (runtime == null) {
+            throw new ServletException("Tuscany is not configured for the web application");
+        }
+    }
+
+    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain filterChain)
+        throws IOException, ServletException {
+        try {
+            runtime.startRequest();
+            filterChain.doFilter(req, resp);
+        } finally {
+            runtime.stopRequest();
+        }
+    }
+
+    public void destroy() {
+        runtime = null;
+    }
+}