[Spyce-users] Patch for 404 customization

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Hi all,
I have hacked Spyce to permit customization of 404 errors and I'd like 
to hear other people's comments on my code. The 404 topic was discussed 
on the list last fall. The short story as I understand it is that (a) 
the comments in spyceconf.py (the part about "...errors include 
spyce.spyceNotFound, spyce.spyceForbidden...") is incorrect and (b) 
there's no way to override 404s. The last message on the topic was here 
(although you might not be able to get there at the moment because 
Sourceforge is having a bad hair day):
http://sourceforge.net/mailarchive/message.php?msg_id=13225440

Conceptually, this code allows for customization of any error response 
code, but I think the only one that Spyce returns at the moment is 404. 
Since I don't understand Spyce internals, my goal was to change as 
little code as possible. That also means less typing. =)

The first part of the change is to patch spyceWWW.py as per the diff at 
the end of this message. Next, add a dict to spyceconf.py that looks 
something like this:
errorresponsecodehandlers = { 404 : "/Error404.spy" }
Each entry in the dict consists of the response code you want to trap 
and the file by which it should be processed. Last but not least, you 
have to create /Error404.spy. Mine looks something like this:
<html>
<body>
<p>Response code is [[=response._response.returncode]]</p>
<p>URL stack is [[=request.stack()]]</p>
</body>
</html>


Comments are welcome
Philip

--- /usr/local/spyce-2.0.3/spyceWWW.py  Thu Jul 21 09:24:17 2005
+++ spyceWWW.py Tue May 16 10:59:23 2006
@@ -164,6 +164,21 @@
      finally:
        spyce.DEBUG('total for %s was %s' % (self.path, time.time() - 
start))
    do_POST=do_GET
+
+  def send_error(self, code, message = None):
+    config = spyce.getServer().config
+    if code in config.errorresponsecodehandlers:
+      # There's a custom handler defined for this response code. Use 
that Spyce
+      # file to generate the output.
+      request = spyceHTTPRequest(self, self.server.documentRoot)
+      request._stack.append(self.server.documentRoot + self.path)
+      response = spyceHTTPResponse(self)
+      response.setReturnCode(code)
+      spyce.spyceFileHandler(request, response, 
self.server.documentRoot + config.errorresponsecodehandlers[code])
+      response.close()
+    else:
+      BaseHTTPServer.BaseHTTPRequestHandler.send_error(self, code, 
message)
+
    def handler_spyce(self, path):
      # process spyce
      request = spyceHTTPRequest(self, self.server.documentRoot)



