-
Notifications
You must be signed in to change notification settings - Fork 2k
/
plugins.py
326 lines (257 loc) · 12.1 KB
/
plugins.py
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
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
import logging
from pylons import c
from ckan.lib import base
from ckan.lib.navl import dictization_functions
from ckan import authz
from ckan import logic
import logic.schema
from ckan import plugins
log = logging.getLogger(__name__)
# Mapping from package-type strings to IDatasetForm instances
_package_plugins = {}
# The fallback behaviour
_default_package_plugin = None
# Mapping from group-type strings to IDatasetForm instances
_group_plugins = {}
# The fallback behaviour
_default_group_plugin = None
def lookup_package_plugin(package_type=None):
"""
Returns the plugin controller associoated with the given package type.
If the package type is None or cannot be found in the mapping, then the
fallback behaviour is used.
"""
if package_type is None:
return _default_package_plugin
return _package_plugins.get(package_type, _default_package_plugin)
def lookup_group_plugin(group_type=None):
"""
Returns the plugin controller associoated with the given group type.
If the group type is None or cannot be found in the mapping, then the
fallback behaviour is used.
"""
if group_type is None:
return _default_group_plugin
return _group_plugins.get(group_type, _default_group_plugin)
def register_package_plugins(map):
"""
Register the various IDatasetForm instances.
This method will setup the mappings between package types and the
registered IDatasetForm instances. If it's called more than once an
exception will be raised.
"""
global _default_package_plugin
# This function should have not effect if called more than once.
# This should not occur in normal deployment, but it may happen when
# running unit tests.
if _default_package_plugin is not None:
return
# Create the mappings and register the fallback behaviour if one is found.
for plugin in plugins.PluginImplementations(plugins.IDatasetForm):
if plugin.is_fallback():
if _default_package_plugin is not None:
raise ValueError, "More than one fallback "\
"IDatasetForm has been registered"
_default_package_plugin = plugin
for package_type in plugin.package_types():
# Create a connection between the newly named type and the
# package controller
map.connect('/%s/new' % package_type,
controller='package', action='new')
map.connect('%s_read' % package_type, '/%s/{id}' % package_type,
controller='package', action='read')
map.connect('%s_action' % package_type,
'/%s/{action}/{id}' % package_type, controller='package',
requirements=dict(action='|'.join(['edit', 'authz', 'history' ]))
)
if package_type in _package_plugins:
raise ValueError, "An existing IDatasetForm is "\
"already associated with the package type "\
"'%s'" % package_type
_package_plugins[package_type] = plugin
# Setup the fallback behaviour if one hasn't been defined.
if _default_package_plugin is None:
_default_package_plugin = DefaultDatasetForm()
def register_group_plugins(map):
"""
Register the various IGroupForm instances.
This method will setup the mappings between package types and the
registered IGroupForm instances. If it's called more than once an
exception will be raised.
"""
global _default_group_plugin
# This function should have not effect if called more than once.
# This should not occur in normal deployment, but it may happen when
# running unit tests.
if _default_group_plugin is not None:
return
# Create the mappings and register the fallback behaviour if one is found.
for plugin in plugins.PluginImplementations(plugins.IGroupForm):
if plugin.is_fallback():
if _default_group_plugin is not None:
raise ValueError, "More than one fallback "\
"IGroupForm has been registered"
_default_group_plugin = plugin
for group_type in plugin.group_types():
# Create the routes based on group_type here, this will
# allow us to have top level objects that are actually
# Groups, but first we need to make sure we are not
# clobbering an existing domain
# Our version of routes doesn't allow the environ to be
# passed into the match call and so we have to set it on the
# map instead. This looks like a threading problem waiting
# to happen but it is executed sequentially from instead the
# routing setup
map.connect('%s_index' % group_type, '/%s' % group_type,
controller='group', action='index')
map.connect('%s_new' % group_type, '/%s/new' % group_type,
controller='group', action='new')
map.connect('%s_read' % group_type, '/%s/{id}' % group_type,
controller='group', action='read')
map.connect('%s_action' % group_type,
'/%s/{action}/{id}' % group_type, controller='group',
requirements=dict(action='|'.join(['edit', 'authz', 'history' ]))
)
if group_type in _group_plugins:
raise ValueError, "An existing IGroupForm is "\
"already associated with the package type "\
"'%s'" % group_type
_group_plugins[group_type] = plugin
# Setup the fallback behaviour if one hasn't been defined.
if _default_group_plugin is None:
_default_group_plugin = DefaultGroupForm()
class DefaultDatasetForm(object):
"""
Provides a default implementation of the pluggable package
controller behaviour.
This class has 2 purposes:
- it provides a base class for IDatasetForm implementations to use
if only a subset of the 5 method hooks need to be customised.
- it provides the fallback behaviour if no plugin is setup to
provide the fallback behaviour.
Note - this isn't a plugin implementation. This is deliberate, as we
don't want this being registered.
"""
def package_form(self):
return 'package/new_package_form.html'
def form_to_db_schema(self):
schema = logic.schema.package_form_schema()
schema['groups'] = {
'name': [not_empty, val.group_id_or_name_exists, unicode],
'id': [ignore_missing, unicode],
}
return schema
def form_to_db_schema_options(self, options):
''' This allows us to select different schemas for different
purpose eg via the web interface or via the api or creation vs
updating. It is optional and if not available form_to_db_schema
should be used. '''
if options.get('api'):
if options.get('type') == 'create':
return logic.schema.default_create_package_schema()
else:
return logic.schema.default_update_package_schema()
else:
return logic.schema.package_form_schema()
def db_to_form_schema(self):
'''This is an interface to manipulate data from the database
into a format suitable for the form (optional)'''
def check_data_dict(self, data_dict, schema=None):
'''Check if the return data is correct, mostly for checking out
if spammers are submitting only part of the form'''
# Resources might not exist yet (eg. Add Dataset)
surplus_keys_schema = ['__extras', '__junk', 'state', 'groups',
'extras_validation', 'save', 'return_to',
'resources', 'type']
if not schema:
schema = self.form_to_db_schema()
schema_keys = schema.keys()
keys_in_schema = set(schema_keys) - set(surplus_keys_schema)
missing_keys = keys_in_schema - set(data_dict.keys())
if missing_keys:
log.info('incorrect form fields posted, missing %s' % missing_keys)
raise dictization_functions.DataError(data_dict)
def setup_template_variables(self, context, data_dict):
from pylons import config
authz_fn = logic.get_action('group_list_authz')
c.groups_authz = authz_fn(context, data_dict)
data_dict.update({'available_only':True})
c.publisher_enabled = 'publisher_form' in config['ckan.plugins']
if c.publisher_enabled:
c.groups_available = c.userobj.get_groups('publisher') if c.userobj else []
else:
c.groups_available = authz_fn(context, data_dict)
c.licences = [('', '')] + base.model.Package.get_license_options()
c.is_sysadmin = authz.Authorizer().is_sysadmin(c.user)
## This is messy as auths take domain object not data_dict
context_pkg = context.get('package', None)
pkg = context_pkg or c.pkg
if pkg:
try:
if not context_pkg:
context['package'] = pkg
logic.check_access('package_change_state', context)
c.auth_for_change_state = True
except logic.NotAuthorized:
c.auth_for_change_state = False
class DefaultGroupForm(object):
"""
Provides a default implementation of the pluggable Group controller
behaviour.
This class has 2 purposes:
- it provides a base class for IGroupForm implementations to use if
only a subset of the method hooks need to be customised.
- it provides the fallback behaviour if no plugin is setup to
provide the fallback behaviour.
Note - this isn't a plugin implementation. This is deliberate, as we
don't want this being registered.
"""
def group_form(self):
return 'group/new_group_form.html'
def form_to_db_schema(self):
return logic.schema.group_form_schema()
def form_to_db_schema_options(self, options):
''' This allows us to select different schemas for different
purpose eg via the web interface or via the api or creation vs
updating. It is optional and if not available form_to_db_schema
should be used. '''
if options.get('api'):
if options.get('type') == 'create':
return logic.schema.default_group_schema()
else:
return logic.schema.default_update_group_schema()
else:
return logic.schema.group_form_schema()
def db_to_form_schema(self):
'''This is an interface to manipulate data from the database
into a format suitable for the form (optional)'''
def check_data_dict(self, data_dict):
'''Check if the return data is correct, mostly for checking out
if spammers are submitting only part of the form
# Resources might not exist yet (eg. Add Dataset)
surplus_keys_schema = ['__extras', '__junk', 'state', 'groups',
'extras_validation', 'save', 'return_to',
'resources']
schema_keys = package_form_schema().keys()
keys_in_schema = set(schema_keys) - set(surplus_keys_schema)
missing_keys = keys_in_schema - set(data_dict.keys())
if missing_keys:
#print data_dict
#print missing_keys
log.info('incorrect form fields posted')
raise DataError(data_dict)
'''
pass
def setup_template_variables(self, context, data_dict):
c.is_sysadmin = authz.Authorizer().is_sysadmin(c.user)
## This is messy as auths take domain object not data_dict
context_group = context.get('group', None)
group = context_group or c.group
if group:
try:
if not context_group:
context['group'] = group
logic.check_access('group_change_state', context)
c.auth_for_change_state = True
except logic.NotAuthorized:
c.auth_for_change_state = False