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authorlresende <lresende@13f79535-47bb-0310-9956-ffa450edef68>2009-11-20 23:53:35 +0000
committerlresende <lresende@13f79535-47bb-0310-9956-ffa450edef68>2009-11-20 23:53:35 +0000
commita3c48da9bb8971497d414f86e352123d95b9c3da (patch)
treefdf0f3636b65946c061c8b2e89d657b488be274e /sca-java-2.x/trunk/modules/host-http/src/main/java/org
parentcc7496466097c3cb8e793ebf3e332b025705aaa7 (diff)
Moving 2.x trunk
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@882795 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'sca-java-2.x/trunk/modules/host-http/src/main/java/org')
-rw-r--r--sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/DefaultResourceServlet.java86
-rw-r--r--sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/DefaultServletHostExtensionPoint.java198
-rw-r--r--sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ExtensibleServletHost.java131
-rw-r--r--sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ServletHost.java120
-rw-r--r--sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ServletHostExtensionPoint.java51
-rw-r--r--sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ServletMappingException.java44
6 files changed, 630 insertions, 0 deletions
diff --git a/sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/DefaultResourceServlet.java b/sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/DefaultResourceServlet.java
new file mode 100644
index 0000000000..3de0b9f5a7
--- /dev/null
+++ b/sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/DefaultResourceServlet.java
@@ -0,0 +1,86 @@
+/*
+ * 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 java.net.URLDecoder;
+
+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 path = URLDecoder.decode(request.getRequestURI().substring(request.getServletPath().length()), "UTF-8");
+ if (path.startsWith("/")) {
+ path = path.substring(1);
+ }
+ URL url = new URL(documentRoot + '/' + path);
+
+ // 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/sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/DefaultServletHostExtensionPoint.java b/sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/DefaultServletHostExtensionPoint.java
new file mode 100644
index 0000000000..04b2f4c199
--- /dev/null
+++ b/sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/DefaultServletHostExtensionPoint.java
@@ -0,0 +1,198 @@
+/*
+ * 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.lang.reflect.Constructor;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import javax.servlet.RequestDispatcher;
+import javax.servlet.Servlet;
+
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.LifeCycleListener;
+import org.apache.tuscany.sca.extensibility.ServiceDeclaration;
+import org.apache.tuscany.sca.extensibility.ServiceDiscovery;
+
+/**
+ * Default implementation of a Servlet host extension point.
+ *
+ * @version $Rev$ $Date$
+ */
+public class DefaultServletHostExtensionPoint implements ServletHostExtensionPoint, LifeCycleListener {
+
+ private List<ServletHost> servletHosts = new ArrayList<ServletHost>();
+ private boolean loaded;
+
+ private ExtensionPointRegistry registry;
+
+ public DefaultServletHostExtensionPoint(ExtensionPointRegistry registry) {
+ this.registry = registry;
+ }
+
+ public void addServletHost(ServletHost servletHost) {
+ servletHosts.add(servletHost);
+ if (servletHost instanceof LifeCycleListener) {
+ ((LifeCycleListener)servletHost).start();
+ }
+ }
+
+ public void removeServletHost(ServletHost servletHost) {
+ servletHosts.remove(servletHost);
+ if (servletHost instanceof LifeCycleListener) {
+ ((LifeCycleListener)servletHost).stop();
+ }
+ }
+
+ public List<ServletHost> getServletHosts() {
+ loadServletHosts();
+ return servletHosts;
+ }
+
+ private synchronized void loadServletHosts() {
+ if (loaded)
+ return;
+
+ // Get the databinding service declarations
+ Collection<ServiceDeclaration> sds;
+ try {
+ sds = registry.getServiceDiscovery().getServiceDeclarations(ServletHost.class, true);
+ } catch (IOException e) {
+ throw new IllegalStateException(e);
+ }
+
+ // Load data bindings
+ for (ServiceDeclaration sd : sds) {
+ // Create a data binding wrapper and register it
+ ServletHost servletHost = new LazyServletHost(sd);
+ addServletHost(servletHost);
+ }
+
+ loaded = true;
+ }
+
+ /**
+ * A data binding facade allowing data bindings to be lazily loaded and
+ * initialized.
+ */
+ public class LazyServletHost implements ServletHost, LifeCycleListener {
+ private ServiceDeclaration sd;
+ private ServletHost host;
+
+ /**
+ * @param sd
+ */
+ public LazyServletHost(ServiceDeclaration sd) {
+ super();
+ this.sd = sd;
+ }
+
+ public synchronized ServletHost getServletHost() {
+ if (host == null) {
+ try {
+ Class<?> cls = sd.loadClass();
+ Constructor<?> ctor = null;
+ try {
+ ctor = cls.getConstructor(ExtensionPointRegistry.class);
+ host = (ServletHost)ctor.newInstance(registry);
+ } catch (NoSuchMethodException e) {
+ ctor = cls.getConstructor();
+ host = (ServletHost)ctor.newInstance();
+ }
+ if(host instanceof LifeCycleListener) {
+ ((LifeCycleListener) host).start();
+ }
+ } catch (Throwable e) {
+ throw new IllegalStateException(e);
+ }
+ }
+ return host;
+ }
+
+ public void addServletMapping(String uri, Servlet servlet) throws ServletMappingException {
+ getServletHost().addServletMapping(uri, servlet);
+ }
+
+ public String getContextPath() {
+ return getServletHost().getContextPath();
+ }
+
+ public int getDefaultPort() {
+ return getServletHost().getDefaultPort();
+ }
+
+ public RequestDispatcher getRequestDispatcher(String uri) throws ServletMappingException {
+ return getServletHost().getRequestDispatcher(uri);
+ }
+
+ public Servlet getServletMapping(String uri) throws ServletMappingException {
+ return getServletHost().getServletMapping(uri);
+ }
+
+ public URL getURLMapping(String uri) {
+ return getServletHost().getURLMapping(uri);
+ }
+
+ public Servlet removeServletMapping(String uri) throws ServletMappingException {
+ return getServletHost().removeServletMapping(uri);
+ }
+
+ public void setAttribute(String name, Object value) {
+ getServletHost().setAttribute(name, value);
+ }
+
+ public void setContextPath(String path) {
+ getServletHost().setContextPath(path);
+ }
+
+ public void setDefaultPort(int port) {
+ getServletHost().setDefaultPort(port);
+ }
+
+ public String getName() {
+ return sd.getAttributes().get("name");
+ }
+
+ public void start() {
+ }
+
+ public void stop() {
+ if (host instanceof LifeCycleListener) {
+ ((LifeCycleListener)host).stop();
+ }
+ }
+ }
+
+ public void start() {
+ }
+
+ public void stop() {
+ for (ServletHost host : servletHosts) {
+ if (host instanceof LifeCycleListener) {
+ ((LifeCycleListener)host).stop();
+ }
+ }
+ servletHosts.clear();
+ registry = null;
+ }
+}
diff --git a/sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ExtensibleServletHost.java b/sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ExtensibleServletHost.java
new file mode 100644
index 0000000000..4dfa1dd8a3
--- /dev/null
+++ b/sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ExtensibleServletHost.java
@@ -0,0 +1,131 @@
+/*
+ * 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.net.URL;
+
+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 setDefaultPort(int port) {
+ if (servletHosts.getServletHosts().isEmpty()) {
+ throw new ServletMappingException("No servlet host available");
+ }
+
+ for (ServletHost servletHost: servletHosts.getServletHosts()) {
+ servletHost.setDefaultPort(port);
+ }
+ }
+
+ private ServletHost getDefaultServletHost() {
+ return servletHosts.getServletHosts().get(0);
+ }
+
+ public int getDefaultPort() {
+ if (servletHosts.getServletHosts().isEmpty()) {
+ throw new ServletMappingException("No servlet host available");
+ }
+
+ return getDefaultServletHost().getDefaultPort();
+ }
+
+ 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
+ getDefaultServletHost().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 getDefaultServletHost().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 getDefaultServletHost().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 getDefaultServletHost().getRequestDispatcher(uri);
+ }
+
+ public String getContextPath() {
+ 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 getDefaultServletHost().getContextPath();
+ }
+
+ public URL getURLMapping(String uri) {
+ if (servletHosts.getServletHosts().isEmpty()) {
+ throw new ServletMappingException("No servlet host available");
+ }
+
+ return getDefaultServletHost().getURLMapping(uri);
+ }
+
+ public void setContextPath(String path) {
+ getDefaultServletHost().setContextPath(path);
+ }
+
+ public void setAttribute(String name, Object value) {
+ getDefaultServletHost().setAttribute(name, value);
+ }
+
+ public String getName() {
+ return getDefaultServletHost().getName();
+ }
+}
diff --git a/sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ServletHost.java b/sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ServletHost.java
new file mode 100644
index 0000000000..dffc1e73d4
--- /dev/null
+++ b/sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ServletHost.java
@@ -0,0 +1,120 @@
+/*
+ * 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.net.URL;
+
+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 {
+
+ /**
+ * Sets the default port for the server.
+ *
+ * @param port the default port
+ */
+ void setDefaultPort(int port);
+
+ /**
+ * Returns the default port for the server.
+ *
+ * @return the default port
+ */
+ int getDefaultPort();
+
+ /**
+ * 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();
+
+ /**
+ * Sets the portion of the request URI that indicates the context of the request
+ *
+ * @param path the context path
+ */
+ void setContextPath(String path);
+
+ /**
+ * Returns the complete URL mapped to the specified URI.
+ * @return the URL mapped to the specified URI
+ */
+ URL getURLMapping(String uri);
+
+ /**
+ * Set an attribute in the application ServletContext
+ * @param name the name of the attribute
+ * @param value the attribute value
+ */
+ void setAttribute(String name, Object value);
+
+ String getName();
+}
diff --git a/sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ServletHostExtensionPoint.java b/sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ServletHostExtensionPoint.java
new file mode 100644
index 0000000000..fbd085ba2b
--- /dev/null
+++ b/sca-java-2.x/trunk/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/sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ServletMappingException.java b/sca-java-2.x/trunk/modules/host-http/src/main/java/org/apache/tuscany/sca/host/http/ServletMappingException.java
new file mode 100644
index 0000000000..ae66c44c3e
--- /dev/null
+++ b/sca-java-2.x/trunk/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);
+ }
+}