Mercurial > hg > WSGraph
annotate wsgraph/web.py @ 3:42f484880808
wire this up
| author | Jeff Hammel <jhammel@mozilla.com> |
|---|---|
| date | Sun, 09 Dec 2012 14:51:23 -0800 |
| parents | 7a3b21cafc00 |
| children | c7170cab1184 |
| rev | line source |
|---|---|
| 0 | 1 #!/usr/bin/env python |
| 2 | |
| 3 """ | |
| 4 web handler for WSGraph | |
| 5 """ | |
| 6 | |
| 7 import json | |
| 8 from webob import Request, Response, exc | |
| 9 | |
| 10 def JSONFormatter(**kwargs): | |
| 11 return json.dumps(kwargs, sort_keys=True) | |
| 12 | |
| 13 def JSONGraphFormatter(graph): | |
| 14 return json.dumps({'nodes': graph.nodes(), | |
| 15 'edges': graph.edges()}, | |
| 16 sort_keys=True) | |
| 17 | |
| 18 class Dispatcher(object): | |
| 19 | |
| 20 def __init__(self, graph, | |
| 21 graph_formatters=None, # TODO | |
| 22 node_formatters=None, # TODO | |
| 23 edge_formatters=None, # TODO | |
| 24 require_auth=False): | |
| 25 self.graph = graph | |
| 26 self.require_auth = require_auth | |
| 27 self.formatters = {0: JSONGraphFormatter, | |
| 28 1: JSONFormatter, | |
| 29 2: JSONFormatter} | |
| 30 | |
| 3 | 31 self.methods = dict([(i, getattr(self, i)) |
| 32 for i in dir(self) | |
| 33 if i.isupper()]) | |
| 34 | |
| 0 | 35 def __call__(self, environ, start_response): |
| 36 request = Request(environ) | |
| 3 | 37 method = self.methods.get(request.method) |
| 38 if method is None: | |
| 39 return exc.HTTPMethodNotAllowed()(environ, start_response) | |
| 40 response = method(request) | |
| 0 | 41 return response(environ, start_response) |
| 42 | |
| 43 @staticmethod | |
| 44 def path_segments(request): | |
| 45 import pdb; pdb.set_trace() | |
| 46 | |
| 47 # HTTP methods | |
| 48 | |
| 49 def GET(self, request): | |
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start to sketch out REST API
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50 """ |
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51 respond to a GET request |
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52 |
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53 Formatters are keyed off of |
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54 |
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55 formatters = {0: { |
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56 } |
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57 |
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58 API: |
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59 |
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60 ?format=<format> |
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61 |
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62 """ |
| 0 | 63 |
| 64 segments = self.path_segments(request) | |
| 65 | |
| 66 # formatter | |
| 67 formatter = self.formatters[len(segments)] | |
| 68 return Response(content_type='text/plain', | |
| 69 body="WSGraph") | |
| 70 | |
| 71 def POST(self, request): | |
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72 """ |
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73 respond to a POST request |
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74 |
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75 API: |
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76 |
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77 ?update : |
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78 """ |
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79 |
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80 return exc.HTTPSeeOther('/') # TODO: /path/to/self |
| 0 | 81 |
| 82 def HEAD(self, request): | |
| 83 """respond to a HEAD request""" | |
| 84 raise NotImplementedError | |
| 85 | |
| 3 | 86 def OPTIONS(self, request): |
| 87 raise NotImplementedError | |
| 88 | |
| 0 | 89 if __name__ == '__main__': |
| 90 | |
| 3 | 91 ### example web server |
| 92 | |
| 0 | 93 # imports |
| 94 from wsgiref import simple_server | |
| 3 | 95 from model import MemoryCache |
| 96 from optparse import OptionParser | |
| 0 | 97 |
| 3 | 98 # parse command line options |
| 99 parser = OptionParser() | |
| 100 parser.add_option('-p', '--port', type='int', default=8080, | |
| 101 help="port to serve on") | |
| 102 options, args = parser.parse_args() | |
| 103 | |
| 104 # example model | |
| 0 | 105 graph = MemoryCache() |
| 106 | |
| 3 | 107 # WSGI app |
| 0 | 108 app = Dispatcher(graph=graph) |
| 3 | 109 server = simple_server.make_server(host='0.0.0.0', port=options.port, app=app) |
| 110 print 'http://localhost:%s/' % options.port | |
| 0 | 111 server.serve_forever() |
| 112 |