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Diffstat (limited to 'branches/sca-java-1.0.1/modules/host-http/src/main/java/org')
6 files changed, 389 insertions, 0 deletions
diff --git a/branches/sca-java-1.0.1/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/DefaultResourceServlet.java b/branches/sca-java-1.0.1/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/DefaultResourceServlet.java new file mode 100644 index 0000000000..7efaed1a1e --- /dev/null +++ b/branches/sca-java-1.0.1/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/DefaultResourceServlet.java @@ -0,0 +1,85 @@ +/* + * 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.sca.host.http; + +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.net.URL; + +import javax.servlet.Servlet; +import javax.servlet.ServletException; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +/** + * A minimal implementation of a servlet that serves documents in a document root + * directory. + * + * A servlet host implementation is not required to use this implementation and can map + * the URI and document root to a more complete and more efficient implementation of + * a resource servlet, for example the Tomcat or Jetty default servlets. + * + * @version $Rev$ $Date$ + */ +public class DefaultResourceServlet extends HttpServlet implements Servlet { + private static final long serialVersionUID = 2865466417329430610L; + + private String documentRoot; + + /** + * Constructs a new ResourceServlet + * @param documentRoot the document root + */ + public DefaultResourceServlet(String documentRoot) { + this.documentRoot = documentRoot; + } + + /** + * Returns the document root. + * @return the document root + */ + public String getDocumentRoot() { + return documentRoot; + } + + @Override + protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { + + // Determine the resource path + String requestPath = request.getPathInfo(); + if (requestPath.startsWith("/")) { + requestPath = requestPath.substring(1); + } + URL url = new URL(documentRoot + '/' + requestPath); + + // Write the resource + InputStream is = url.openStream(); + OutputStream os = response.getOutputStream(); + byte[] buffer = new byte[2048]; + for (;;) { + int n = is.read(buffer); + if (n <= 0) + break; + os.write(buffer, 0, n); + } + } +} diff --git a/branches/sca-java-1.0.1/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/DefaultServletHostExtensionPoint.java b/branches/sca-java-1.0.1/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/DefaultServletHostExtensionPoint.java new file mode 100644 index 0000000000..8f20287f84 --- /dev/null +++ b/branches/sca-java-1.0.1/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/DefaultServletHostExtensionPoint.java @@ -0,0 +1,45 @@ +/* + * 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.sca.host.http; + +import java.util.ArrayList; +import java.util.List; + +/** + * Default implementation of a servlet host extension point. + * + * @version $Rev$ $Date$ + */ +public class DefaultServletHostExtensionPoint implements ServletHostExtensionPoint { + + private List<ServletHost> servletHosts = new ArrayList<ServletHost>(); + + public void addServletHost(ServletHost servletHost) { + servletHosts.add(servletHost); + } + + public void removeServletHost(ServletHost servletHost) { + servletHosts.remove(servletHost); + } + + public List<ServletHost> getServletHosts() { + return servletHosts; + } +} diff --git a/branches/sca-java-1.0.1/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ExtensibleServletHost.java b/branches/sca-java-1.0.1/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ExtensibleServletHost.java new file mode 100644 index 0000000000..d51e1e474a --- /dev/null +++ b/branches/sca-java-1.0.1/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ExtensibleServletHost.java @@ -0,0 +1,82 @@ +/* + * 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.sca.host.http; + +import javax.servlet.RequestDispatcher; +import javax.servlet.Servlet; + +/** + * Default implementation of an extensible servlet host. + * + * @version $Rev$ $Date$ + */ +public class ExtensibleServletHost implements ServletHost { + + private ServletHostExtensionPoint servletHosts; + + public ExtensibleServletHost(ServletHostExtensionPoint servletHosts) { + this.servletHosts = servletHosts; + } + + public void addServletMapping(String uri, Servlet servlet) throws ServletMappingException { + if (servletHosts.getServletHosts().isEmpty()) { + throw new ServletMappingException("No servlet host available"); + } + + // TODO implement selection of the correct servlet host based on the mapping + // For now just select the first one + servletHosts.getServletHosts().get(0).addServletMapping(uri, servlet); + } + + public Servlet getServletMapping(String uri) throws ServletMappingException { + if (servletHosts.getServletHosts().isEmpty()) { + throw new ServletMappingException("No servlet host available"); + } + + // TODO implement selection of the correct servlet host based on the mapping + // For now just select the first one + return servletHosts.getServletHosts().get(0).getServletMapping(uri); + } + + public Servlet removeServletMapping(String uri) throws ServletMappingException { + if (servletHosts.getServletHosts().isEmpty()) { + throw new ServletMappingException("No servlet host available"); + } + + // TODO implement selection of the correct servlet host based on the mapping + // For now just select the first one + return servletHosts.getServletHosts().get(0).removeServletMapping(uri); + } + + public RequestDispatcher getRequestDispatcher(String uri) throws ServletMappingException { + if (servletHosts.getServletHosts().isEmpty()) { + throw new ServletMappingException("No servlet host available"); + } + + // TODO implement selection of the correct servlet host based on the mapping + // For now just select the first one + return servletHosts.getServletHosts().get(0).getRequestDispatcher(uri); + } + + public String getContextPath() { + return servletHosts.getServletHosts().get(0).getContextPath(); + } + +} diff --git a/branches/sca-java-1.0.1/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ServletHost.java b/branches/sca-java-1.0.1/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ServletHost.java new file mode 100644 index 0000000000..b6e7b1e39d --- /dev/null +++ b/branches/sca-java-1.0.1/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ServletHost.java @@ -0,0 +1,82 @@ +/* + * 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.sca.host.http; + +import javax.servlet.RequestDispatcher; +import javax.servlet.Servlet; + +/** + * Interface implemented by host environments that allow Servlets to be + * registered. + * <p/> + * This interface allows a system service to register a servlet + * to handle inbound requests. + * + * @version $Rev$ $Date$ + */ +public interface ServletHost { + /** + * Add a mapping for an instance of a Servlet. This requests that the + * servlet container direct all requests to the designated mapping to the + * supplied Servlet instance. + * + * @param uri the uri-mapping for the Servlet + * @param servlet the Servlet that should be invoked + * @throws ServletMappingException + */ + void addServletMapping(String uri, Servlet servlet) throws ServletMappingException; + + /** + * Remove a servlet mapping. This directs the servlet container not to direct + * any more requests to a previously registered Servlet. + * + * @param uri the uri-mapping for the Servlet + * @return the servlet that was registered to the mapping, null if nothing + * was registered to the mapping + * @throws ServletMappingException + */ + Servlet removeServletMapping(String uri) throws ServletMappingException; + + /** + * Returns the servlet mapped to the given uri. + * + * @param uri the uri-mapping for the Servlet + * @return the servlet registered with the mapping + * @throws ServletMappingException + */ + Servlet getServletMapping(String uri) throws ServletMappingException; + + /** + * Returns a servlet request dispatcher for the servlet mapped to the specified uri. + * + * @param uri the uri mapped to a Servlet + * @return a RequestDispatcher that can be used to dispatch requests to + * that servlet + * @throws ServletMappingException + */ + RequestDispatcher getRequestDispatcher(String uri) throws ServletMappingException; + + /** + * Returns the portion of the request URI that indicates the context of the request + * + * @return a String specifying the portion of the request URI that indicates the context of the request + */ + String getContextPath(); + +} diff --git a/branches/sca-java-1.0.1/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ServletHostExtensionPoint.java b/branches/sca-java-1.0.1/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ServletHostExtensionPoint.java new file mode 100644 index 0000000000..f887151a77 --- /dev/null +++ b/branches/sca-java-1.0.1/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ServletHostExtensionPoint.java @@ -0,0 +1,51 @@ +/* + * 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.sca.host.http; + +import java.util.List; + +/** + * An extension point for servlet hosts. + * + * @version $Rev$ $Date$ + */ +public interface ServletHostExtensionPoint { + + /** + * Adds a servlet host extension. + * + * @param servletHost + */ + void addServletHost(ServletHost servletHost); + + /** + * Removes a servlet host extension. + * + * @param servletHost + */ + void removeServletHost(ServletHost servletHost); + + /** + * Returns a list of servlet host extensions. + * + * @return + */ + List<ServletHost> getServletHosts(); + +} diff --git a/branches/sca-java-1.0.1/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ServletMappingException.java b/branches/sca-java-1.0.1/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ServletMappingException.java new file mode 100644 index 0000000000..b061f171b9 --- /dev/null +++ b/branches/sca-java-1.0.1/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ServletMappingException.java @@ -0,0 +1,44 @@ +/* + * 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.sca.host.http; + +/** + * Indicates an exception while registering a servlet mapping. + * + * @version $Rev$ $Date$ + */ +public class ServletMappingException extends RuntimeException { + private static final long serialVersionUID = 1L; + + public ServletMappingException() { + super(); + } + + public ServletMappingException(String message) { + super(message); + } + + public ServletMappingException(String message, Throwable cause) { + super(message, cause); + } + + public ServletMappingException(Throwable cause) { + super(cause); + } +} |