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[WEBUI] Add error support using exceptions in controller

Yann Weber 8 years ago
parent
39333d699e
commit
ee1d1edd44
5 changed files with 76 additions and 6 deletions
Unified View Show Diff Stats
  1. 51
    0
      plugins/webui/exceptions.py
  2. 1
    3
      plugins/webui/interface/controllers/base.py
  3. 15
    3
      plugins/webui/run.py
  4. 0
    0
      plugins/webui/templates/empty.html
  5. 9
    0
      plugins/webui/templates/error.html

+ 51
- 0
plugins/webui/exceptions.py View File

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+#-*- coding: utf-8 -*-
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+
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+from werkzeug.wrappers import Response
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+
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+class HttpException(Exception):
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+
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+    STATUS_STR = {
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+        4:{
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+            400: 'Bad request',
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+            401: 'Unauthorized',
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+            402: 'Payment required',
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+            403: 'Forbidden',
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+            404: 'Not found',
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+            418: 'I\'m a teapot', #RFC 2324
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+        },
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+        5:{
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+            500: 'Internal server error',
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+            501: 'Not implemented',
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+        },
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+    }
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+
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+    def __init__(self, status_code = 500, tpl = 'error.html', custom = None):
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+        self.status_code = status_code
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+        self.tpl = tpl
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+        self.custom = custom
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+
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+    def render(self, request):
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+        from .interface.template.loader import TemplateLoader
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+        loader = TemplateLoader()
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+        tpl_vars = {
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+            'status_code': self.status_code,
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+            'status_str': self.status_str(self.status_code),
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+            'custom': self.custom }
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+        response = Response(
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+            loader.render_to_response(self.tpl, template_vars = tpl_vars),
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+            mimetype = 'text/html')
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+        response.status_code = self.status_code
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+        return response
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+
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+    @staticmethod
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+    def status_str(status_code):
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+        status_fam = status_code / 100
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+        if status_fam not in HttpException.STATUS_STR or \
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+            status_code not in HttpException.STATUS_STR[status_fam]:
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+            return 'Unknown'
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+        else:
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+            return HttpException.STATUS_STR[status_fam][status_code]
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+
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+
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+
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+

+ 1
- 3
plugins/webui/interface/controllers/base.py View File

5
5
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 # This module contains the web UI controllers that will be called from the web ui class
 6 
 # This module contains the web UI controllers that will be called from the web ui class
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7
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-
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-def get_response(tpl, tpl_vars={}, mimetype='text/html', status_code=200):
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+def get_response(tpl='empty.html', tpl_vars={}, mimetype='text/html', status_code=200):
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     loader = TemplateLoader()
 9 
     loader = TemplateLoader()
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     response = Response(loader.render_to_response(tpl, template_vars=tpl_vars), mimetype=mimetype)
 10 
     response = Response(loader.render_to_response(tpl, template_vars=tpl_vars), mimetype=mimetype)
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     response.status_code = status_code
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     response.status_code = status_code
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     return response
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     return response
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13
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-
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 def index(request):
 14 
 def index(request):
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     return get_response('index/index.html')
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     return get_response('index/index.html')
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16

+ 15
- 3
plugins/webui/run.py View File

3
3
4 
 import os
 4 
 import os
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 from werkzeug.contrib.sessions import FilesystemSessionStore
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 from werkzeug.contrib.sessions import FilesystemSessionStore
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+from werkzeug.wrappers import Response
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7
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 from lodel.settings import Settings
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 from lodel.settings import Settings
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 from .interface.router import get_controller
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 from .interface.router import get_controller
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 from .interface.lodelrequest import LodelRequest
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 from .interface.lodelrequest import LodelRequest
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+from .exceptions import *
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 from lodel.utils.datetime import get_utc_timestamp
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 from lodel.utils.datetime import get_utc_timestamp
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13
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 SESSION_FILES_BASE_DIR = Settings.webui.sessions.directory
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 SESSION_FILES_BASE_DIR = Settings.webui.sessions.directory
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             request.session = session_store.new()
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             request.session = session_store.new()
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             request.session['user_context'] = None
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             request.session['user_context'] = None
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         request.session['last_accessed'] = current_timestamp
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         request.session['last_accessed'] = current_timestamp
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-
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-    controller = get_controller(request)
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-    response = controller(request)
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+
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+    try:
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+        controller = get_controller(request)
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+        response = controller(request)
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+    except HttpException as e:
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+        try:
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+            response = e.render(request)
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+        except Exception as eb:
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+            res = Response()
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+            res.status_code = 500
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+            return res
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+
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+
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     if request.session.should_save:
 73 
     if request.session.should_save:
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         session_store.save(request.session)
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         session_store.save(request.session)
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         response.set_cookie('sid', request.session.sid)
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         response.set_cookie('sid', request.session.sid)

+ 0
- 0
plugins/webui/templates/empty.html View File


+ 9
- 0
plugins/webui/templates/error.html View File

1 
+<!DOCTYPE html>
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+<html>
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+	<head>
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+		<title>{{status_code}} {{status_str}}</title>
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+	</head>
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+	<body>
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+		{{status_code}} {{status_str}}
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+	</body>
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+</html>

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