1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
"""
WSME for cornice
Activate it::
config.include('wsme.cornice')
And use it::
@hello.get()
@wsexpose(Message, wsme.types.text)
def get_hello(who=u'World'):
return Message(text='Hello %s' % who)
"""
from __future__ import absolute_import
import inspect
import sys
import wsme
from wsme.rest import json as restjson
from wsme.rest import xml as restxml
import wsme.runtime
import wsme.api
import functools
from wsme.rest.args import (
args_from_args, args_from_params, args_from_body, combine_args
)
class WSMEJsonRenderer(object):
def __init__(self, info):
pass
def __call__(self, data, context):
response = context['request'].response
response.content_type = 'application/json'
if 'faultcode' in data:
if 'orig_code' in data:
response.status_code = data['orig_code']
elif data['faultcode'] == 'Client':
response.status_code = 400
else:
response.status_code = 500
return restjson.encode_error(None, data)
obj = data['result']
if isinstance(obj, wsme.api.Response):
response.status_code = obj.status_code
if obj.error:
return restjson.encode_error(None, obj.error)
obj = obj.obj
return restjson.encode_result(obj, data['datatype'])
class WSMEXmlRenderer(object):
def __init__(self, info):
pass
def __call__(self, data, context):
response = context['request'].response
if 'faultcode' in data:
if data['faultcode'] == 'Client':
response.status_code = 400
else:
response.status_code = 500
return restxml.encode_error(None, data)
response.content_type = 'text/xml'
return restxml.encode_result(data['result'], data['datatype'])
def get_outputformat(request):
df = None
if 'Accept' in request.headers:
if 'application/json' in request.headers['Accept']:
df = 'json'
elif 'text/xml' in request.headers['Accept']:
df = 'xml'
if df is None and 'Content-Type' in request.headers:
if 'application/json' in request.headers['Content-Type']:
df = 'json'
elif 'text/xml' in request.headers['Content-Type']:
df = 'xml'
return df if df else 'json'
def signature(*args, **kwargs):
sig = wsme.signature(*args, **kwargs)
def decorate(f):
args = inspect.getargspec(f)[0]
with_self = args[0] == 'self' if args else False
f = sig(f)
funcdef = wsme.api.FunctionDefinition.get(f)
funcdef.resolve_types(wsme.types.registry)
@functools.wraps(f)
def callfunction(*args):
if with_self:
if len(args) == 1:
self = args[0]
request = self.request
elif len(args) == 2:
self, request = args
else:
raise ValueError("Cannot do anything with these arguments")
else:
request = args[0]
request.override_renderer = 'wsme' + get_outputformat(request)
try:
args, kwargs = combine_args(funcdef, (
args_from_args(funcdef, (), request.matchdict),
args_from_params(funcdef, request.params),
args_from_body(funcdef, request.body, request.content_type)
))
wsme.runtime.check_arguments(funcdef, args, kwargs)
if funcdef.pass_request:
kwargs[funcdef.pass_request] = request
if with_self:
args.insert(0, self)
result = f(*args, **kwargs)
return {
'datatype': funcdef.return_type,
'result': result
}
except:
try:
exception_info = sys.exc_info()
orig_exception = exception_info[1]
orig_code = getattr(orig_exception, 'code', None)
data = wsme.api.format_exception(exception_info)
if orig_code is not None:
data['orig_code'] = orig_code
return data
finally:
del exception_info
callfunction.wsme_func = f
return callfunction
return decorate
def scan_api(root=None):
from cornice.service import get_services
for service in get_services():
for method, func, options in service.definitions:
wsme_func = getattr(func, 'wsme_func')
basepath = service.path.split('/')
if basepath and not basepath[0]:
del basepath[0]
if wsme_func:
yield (
basepath + [method.lower()],
wsme_func._wsme_definition
)
def includeme(config):
import pyramid.wsgi
wsroot = wsme.WSRoot(scan_api=scan_api, webpath='/ws')
wsroot.addprotocol('extdirect')
config.add_renderer('wsmejson', WSMEJsonRenderer)
config.add_renderer('wsmexml', WSMEXmlRenderer)
config.add_route('wsme', '/ws/*path')
config.add_view(pyramid.wsgi.wsgiapp(wsroot.wsgiapp()), route_name='wsme')
|
