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1
48
49 package com.caucho.burlap.server;
50
51 import com.caucho.burlap.io.BurlapInput;
52 import com.caucho.burlap.io.BurlapOutput;
53 import com.caucho.services.server.Service;
54 import com.caucho.services.server.ServiceContext;
55
56 import javax.servlet.GenericServlet  ;
57 import javax.servlet.Servlet ;
58 import javax.servlet.ServletConfig ;
59 import javax.servlet.ServletException ;
60 import javax.servlet.ServletRequest ;
61 import javax.servlet.ServletResponse ;
62 import javax.servlet.http.HttpServletRequest ;
63 import javax.servlet.http.HttpServletResponse ;
64 import java.io.IOException ;
65 import java.io.InputStream ;
66 import java.io.OutputStream ;
67 import java.io.PrintWriter ;
68
69
72 public class BurlapServlet extends GenericServlet {
73 private Class _apiClass;
74 private Object _service;
75
76 private BurlapSkeleton _skeleton;
77
78 public String getServletInfo()
79 {
80 return "Burlap Servlet";
81 }
82
83
86 public void setService(Object service)
87 {
88 _service = service;
89 }
90
91
94 public void setAPIClass(Class apiClass)
95 {
96 _apiClass = apiClass;
97 }
98
99
102 public void init(ServletConfig config)
103 throws ServletException
104 {
105 super.init(config);
106
107 try {
108 if (_service == null) {
109 String className = getInitParameter("service-class");
110 Class serviceClass = null;
111
112 if (className != null) {
113 ClassLoader loader = Thread.currentThread().getContextClassLoader();
114
115 if (loader != null)
116 serviceClass = Class.forName(className, false, loader);
117 else
118 serviceClass = Class.forName(className);
119 }
120 else {
121 if (getClass().equals(BurlapServlet.class))
122 throw new ServletException ("server must extend BurlapServlet");
123
124 serviceClass = getClass();
125 }
126
127 _service = serviceClass.newInstance();
128
129 if (_service instanceof BurlapServlet)
130 ((BurlapServlet) _service).setService(this);
131 if (_service instanceof Service)
132 ((Service) _service).init(getServletConfig());
133 else if (_service instanceof Servlet )
134 ((Servlet ) _service).init(getServletConfig());
135 }
136
137 if (_apiClass == null) {
138 String className = getInitParameter("api-class");
139
140 if (className != null) {
141 ClassLoader loader = Thread.currentThread().getContextClassLoader();
142
143 if (loader != null)
144 _apiClass = Class.forName(className, false, loader);
145 else
146 _apiClass = Class.forName(className);
147 }
148 else
149 _apiClass = _service.getClass();
150 }
151
152 _skeleton = new BurlapSkeleton(_service, _apiClass);
153 } catch (ServletException e) {
154 throw e;
155 } catch (Exception e) {
156 throw new ServletException (e);
157 }
158 }
159
160
164 public void service(ServletRequest request, ServletResponse response)
165 throws IOException , ServletException
166 {
167 HttpServletRequest req = (HttpServletRequest ) request;
168 HttpServletResponse res = (HttpServletResponse ) response;
169
170 if (! req.getMethod().equals("POST")) {
171 res.setStatus(500, "Burlap Requires POST");
172 PrintWriter out = res.getWriter();
173
174 res.setContentType("text/html");
175 out.println("<h1>Burlap Requires POST</h1>");
176
177 return;
178 }
179
180 String serviceId = req.getPathInfo();
181 String objectId = req.getParameter("id");
182 if (objectId == null)
183 objectId = req.getParameter("ejbid");
184
185 ServiceContext.begin(req, serviceId, objectId);
186
187 try {
188 InputStream is = request.getInputStream();
189 OutputStream os = response.getOutputStream();
190
191 BurlapInput in = new BurlapInput(is);
192 BurlapOutput out = new BurlapOutput(os);
193
194 _skeleton.invoke(in, out);
195 } catch (RuntimeException e) {
196 throw e;
197 } catch (ServletException e) {
198 throw e;
199 } catch (Throwable e) {
200 throw new ServletException (e);
201 } finally {
202 ServiceContext.end();
203 }
204 }
205 }
206 |
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