| 1 | // Copyright 2004-2007 Jean-Francois Poilpret |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | package net.sourceforge.hiveremoting.caucho; |
| 16 | |
| 17 | import java.io.InputStream; |
| 18 | import java.io.OutputStream; |
| 19 | import java.util.Enumeration; |
| 20 | import java.util.HashMap; |
| 21 | import java.util.Map; |
| 22 | |
| 23 | import javax.servlet.ServletException; |
| 24 | import javax.servlet.http.HttpServletRequest; |
| 25 | import javax.servlet.http.HttpServletResponse; |
| 26 | |
| 27 | import org.apache.commons.logging.Log; |
| 28 | import org.apache.commons.logging.LogFactory; |
| 29 | import org.apache.hivemind.internal.ServicePoint; |
| 30 | |
| 31 | import com.caucho.hessian.io.SerializerFactory; |
| 32 | |
| 33 | /** |
| 34 | * @author Jean-Francois Poilpret |
| 35 | */ |
| 36 | public abstract class AbstractRemoteServiceInvoker implements RemoteServiceInvoker |
| 37 | { |
| 38 | static private final Log _logger = LogFactory.getLog(AbstractRemoteServiceInvoker.class); |
| 39 | |
| 40 | protected AbstractRemoteServiceInvoker( PublishServiceContribution contrib, |
| 41 | SerializerFactory factory) |
| 42 | { |
| 43 | ServicePoint service = contrib.getServiceId(); |
| 44 | _logger.debug("<init> '" + service.getExtensionPointId() + "'"); |
| 45 | _factory = factory; |
| 46 | _serviceId = contrib.getUrlPath(); |
| 47 | _secure = contrib.isSecure(); |
| 48 | _handler = contrib.getContextHandler(); |
| 49 | _logger.debug("<init> '" + service.getExtensionPointId() + "' ended"); |
| 50 | } |
| 51 | |
| 52 | //CSOFF: IllegalCatchCheck |
| 53 | public void invoke(HttpServletRequest request, HttpServletResponse response) |
| 54 | throws ServletException |
| 55 | { |
| 56 | if (_secure && !request.isSecure()) |
| 57 | { |
| 58 | _logger.error("invoke(" + _serviceId + ") request is not secure"); |
| 59 | throw new ServletException("Request must be secure but is not!"); |
| 60 | } |
| 61 | if (_handler != null) |
| 62 | { |
| 63 | Map<String, String> context = new HashMap<String, String>(); |
| 64 | //#### Note that the following call may return null with some |
| 65 | // Servlet Containers (which ones? I dunno) |
| 66 | Enumeration headers = request.getHeaderNames(); |
| 67 | while (headers.hasMoreElements()) |
| 68 | { |
| 69 | String key = (String) headers.nextElement(); |
| 70 | String value = request.getHeader(key); |
| 71 | context.put(key, value); |
| 72 | } |
| 73 | _handler.extractContext(context); |
| 74 | } |
| 75 | try |
| 76 | { |
| 77 | invoke(request.getInputStream(), response.getOutputStream()); |
| 78 | } |
| 79 | catch (RuntimeException e) |
| 80 | { |
| 81 | _logger.error("invoke(" + _serviceId + ")", e); |
| 82 | throw e; |
| 83 | } |
| 84 | catch (ServletException e) |
| 85 | { |
| 86 | _logger.error("invoke(" + _serviceId + ")", e); |
| 87 | throw e; |
| 88 | } |
| 89 | catch (Throwable e) |
| 90 | { |
| 91 | _logger.error("invoke(" + _serviceId + ")", e); |
| 92 | throw new ServletException(e); |
| 93 | } |
| 94 | finally |
| 95 | { |
| 96 | if (_handler != null) |
| 97 | { |
| 98 | Map<String, String> context = new HashMap<String, String>(); |
| 99 | _handler.initContext(context); |
| 100 | for (Map.Entry<String, String> entry: context.entrySet()) |
| 101 | { |
| 102 | response.setHeader(entry.getKey(), entry.getValue()); |
| 103 | } |
| 104 | } |
| 105 | } |
| 106 | } |
| 107 | //CSON: IllegalCatchCheck |
| 108 | |
| 109 | //CSOFF: IllegalThrowsCheck |
| 110 | abstract protected void invoke(InputStream is, OutputStream os) |
| 111 | throws Throwable; |
| 112 | //CSON: IllegalThrowsCheck |
| 113 | |
| 114 | protected final SerializerFactory _factory; |
| 115 | protected final String _serviceId; |
| 116 | protected final boolean _secure; |
| 117 | protected final RemoteContextHandler _handler; |
| 118 | } |