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get.py
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get.py
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from sqlalchemy.sql import select
from sqlalchemy import or_, and_, func, desc, case
import uuid
from pylons import config
import ckan
from ckan.logic import NotFound
from ckan.logic import check_access
from ckan.model import misc
from ckan.plugins import (PluginImplementations,
IGroupController,
IPackageController)
from pylons import config
from ckan.authz import Authorizer
from ckan.lib.dictization import table_dictize
from ckan.lib.dictization.model_dictize import (package_dictize,
resource_list_dictize,
resource_dictize,
group_dictize,
group_list_dictize,
tag_dictize,
task_status_dictize,
user_dictize,
activity_list_dictize,
activity_detail_list_dictize)
from ckan.lib.dictization.model_dictize import (package_to_api1,
package_to_api2,
group_to_api1,
group_to_api2,
tag_to_api1,
tag_to_api2)
from ckan.lib.search import query_for, SearchError
import logging
log = logging.getLogger('ckan.logic')
def _package_list_with_resources(context, package_revision_list):
package_list = []
model = context["model"]
for package in package_revision_list:
result_dict = table_dictize(package, context)
res_rev = model.resource_revision_table
resource_group = model.resource_group_table
query = select([res_rev], from_obj = res_rev.join(resource_group,
resource_group.c.id == res_rev.c.resource_group_id))
query = query.where(resource_group.c.package_id == package.id)
result = query.where(res_rev.c.current == True).execute()
result_dict["resources"] = resource_list_dictize(result, context)
license_id = result_dict['license_id']
if license_id:
try:
isopen = model.Package.get_license_register()[license_id].isopen()
result_dict['isopen'] = isopen
except KeyError:
# TODO: create a log message this error?
result_dict['isopen'] = False
else:
result_dict['isopen'] = False
package_list.append(result_dict)
return package_list
def site_read(context,data_dict=None):
check_access('site_read',context,data_dict)
return True
def package_list(context, data_dict):
'''Lists packages by name or id'''
model = context["model"]
user = context["user"]
api = context.get("api_version", '1')
ref_package_by = 'id' if api == '2' else 'name'
check_access('package_list', context, data_dict)
query = model.Session.query(model.PackageRevision)
query = query.filter(model.PackageRevision.state=='active')
query = query.filter(model.PackageRevision.current==True)
packages = query.all()
return [getattr(p, ref_package_by) for p in packages]
def current_package_list_with_resources(context, data_dict):
model = context["model"]
user = context["user"]
limit = data_dict.get("limit")
check_access('current_package_list_with_resources', context, data_dict)
query = model.Session.query(model.PackageRevision)
query = query.filter(model.PackageRevision.state=='active')
query = query.filter(model.PackageRevision.current==True)
query = query.order_by(model.package_revision_table.c.revision_timestamp.desc())
if limit:
query = query.limit(limit)
pack_rev = query.all()
return _package_list_with_resources(context, pack_rev)
def revision_list(context, data_dict):
model = context['model']
check_access('revision_list', context, data_dict)
revs = model.Session.query(model.Revision).all()
return [rev.id for rev in revs]
def package_revision_list(context, data_dict):
model = context["model"]
id = data_dict["id"]
pkg = model.Package.get(id)
if pkg is None:
raise NotFound
check_access('package_revision_list',context, data_dict)
revision_dicts = []
for revision, object_revisions in pkg.all_related_revisions:
revision_dicts.append(model.revision_as_dict(revision,
include_packages=False,
include_groups=False))
return revision_dicts
def group_list(context, data_dict):
'''Returns a list of groups'''
model = context['model']
user = context['user']
api = context.get('api_version') or '1'
ref_group_by = 'id' if api == '2' else 'name';
order_by = data_dict.get('order_by', 'name')
if order_by not in set(('name', 'packages')):
raise ValidationError('"order_by" value %r not implemented.' % order_by)
all_fields = data_dict.get('all_fields',None)
check_access('group_list',context, data_dict)
query = model.Session.query(model.Group).join(model.GroupRevision)
query = query.filter(model.GroupRevision.state=='active')
query = query.filter(model.GroupRevision.current==True)
if order_by == 'name':
sort_by, reverse = 'name', False
groups = query.all()
if order_by == 'packages':
sort_by, reverse = 'packages', True
if not all_fields:
group_list = [getattr(p, ref_group_by) for p in groups]
else:
group_list = group_list_dictize(groups, context,
lambda x:x[sort_by], reverse)
return group_list
def group_list_authz(context, data_dict):
'''
Returns a list of groups which the user is allowed to edit
If 'available_only' is specified, the existing groups in the package are
removed.
'''
model = context['model']
user = context['user']
available_only = data_dict.get('available_only',False)
check_access('group_list_authz',context, data_dict)
query = Authorizer().authorized_query(user, model.Group, model.Action.EDIT)
groups = set(query.all())
if available_only:
package = context.get('package')
if package:
groups = groups - set(package.groups)
return [{'id':group.id,'name':group.name} for group in groups]
def group_revision_list(context, data_dict):
model = context['model']
id = data_dict['id']
group = model.Group.get(id)
if group is None:
raise NotFound
check_access('group_revision_list',context, data_dict)
revision_dicts = []
for revision, object_revisions in group.all_related_revisions:
revision_dicts.append(model.revision_as_dict(revision,
include_packages=False,
include_groups=False))
return revision_dicts
def licence_list(context, data_dict):
model = context["model"]
check_access('licence_list',context, data_dict)
license_register = model.Package.get_license_register()
licenses = license_register.values()
licences = [l.as_dict() for l in licenses]
return licences
def tag_list(context, data_dict):
'''Returns a list of tags'''
model = context['model']
user = context['user']
all_fields = data_dict.get('all_fields',None)
check_access('tag_list',context, data_dict)
q = data_dict.get('q','')
if q:
limit = data_dict.get('limit',25)
offset = data_dict.get('offset',0)
return_objects = data_dict.get('return_objects',True)
query = query_for(model.Tag)
query.run(query=q,
limit=limit,
offset=offset,
return_objects=return_objects,
username=user)
tags = query.results
else:
tags = model.Session.query(model.Tag).all()
tag_list = []
if all_fields:
for tag in tags:
result_dict = tag_dictize(tag, context)
tag_list.append(result_dict)
else:
tag_list = [tag.name for tag in tags]
return tag_list
def user_list(context, data_dict):
'''Lists the current users'''
model = context['model']
user = context['user']
check_access('user_list',context, data_dict)
q = data_dict.get('q','')
order_by = data_dict.get('order_by','name')
query = model.Session.query(
model.User,
model.User.name.label('name'),
model.User.fullname.label('fullname'),
model.User.about.label('about'),
model.User.about.label('email'),
model.User.created.label('created'),
select([func.count(model.Revision.id)], or_(
model.Revision.author==model.User.name,
model.Revision.author==model.User.openid
)
).label('number_of_edits'),
select([func.count(model.UserObjectRole.id)], and_(
model.UserObjectRole.user_id==model.User.id,
model.UserObjectRole.context=='Package',
model.UserObjectRole.role=='admin'
)
).label('number_administered_packages')
)
if q:
query = model.User.search(q, query)
if order_by == 'edits':
query = query.order_by(desc(
select([func.count(model.Revision.id)], or_(
model.Revision.author==model.User.name,
model.Revision.author==model.User.openid
))
))
else:
query = query.order_by(
case([(or_(model.User.fullname == None, model.User.fullname == ''),
model.User.name)],
else_=model.User.fullname)
)
## hack for pagination
if context.get('return_query'):
return query
users_list = []
for user in query.all():
result_dict = user_dictize(user[0], context)
del result_dict['apikey']
users_list.append(result_dict)
return users_list
def package_relationships_list(context, data_dict):
##TODO needs to work with dictization layer
model = context['model']
user = context['user']
api = context.get('api_version') or '1'
id = data_dict["id"]
id2 = data_dict.get("id2")
rel = data_dict.get("rel")
ref_package_by = 'id' if api == '2' else 'name';
pkg1 = model.Package.get(id)
pkg2 = None
if not pkg1:
raise NotFound('First package named in request was not found.')
if id2:
pkg2 = model.Package.get(id2)
if not pkg2:
raise NotFound('Second package named in address was not found.')
if rel == 'relationships':
rel = None
check_access('package_relationships_list',context, data_dict)
# TODO: How to handle this object level authz?
relationships = Authorizer().\
authorized_package_relationships(\
user, pkg1, pkg2, rel, model.Action.READ)
if rel and not relationships:
raise NotFound('Relationship "%s %s %s" not found.'
% (id, rel, id2))
relationship_dicts = [rel.as_dict(pkg1, ref_package_by=ref_package_by)
for rel in relationships]
return relationship_dicts
def package_show(context, data_dict):
model = context['model']
api = context.get('api_version') or '1'
id = data_dict['id']
pkg = model.Package.get(id)
context['package'] = pkg
if pkg is None:
raise NotFound
check_access('package_show', context, data_dict)
package_dict = package_dictize(pkg, context)
for item in PluginImplementations(IPackageController):
item.read(pkg)
return package_dict
def resource_show(context, data_dict):
model = context['model']
api = context.get('api_version') or '1'
id = data_dict['id']
resource = model.Resource.get(id)
context['resource'] = resource
if not resource:
raise NotFound
check_access('resource_show', context, data_dict)
return resource_dictize(resource, context)
def revision_show(context, data_dict):
model = context['model']
api = context.get('api_version') or '1'
id = data_dict['id']
ref_package_by = 'id' if api == '2' else 'name'
rev = model.Session.query(model.Revision).get(id)
if rev is None:
raise NotFound
rev_dict = model.revision_as_dict(rev, include_packages=True,
ref_package_by=ref_package_by)
return rev_dict
def group_show(context, data_dict):
'''Shows group details'''
model = context['model']
id = data_dict['id']
api = context.get('api_version') or '1'
group = model.Group.get(id)
context['group'] = group
if group is None:
raise NotFound
check_access('group_show',context, data_dict)
group_dict = group_dictize(group, context)
for item in PluginImplementations(IGroupController):
item.read(group)
return group_dict
def group_package_show(context, data_dict):
"""
Shows all packages belonging to a group.
"""
model = context["model"]
user = context["user"]
id = data_dict['id']
limit = data_dict.get("limit")
group = model.Group.get(id)
context['group'] = group
if group is None:
raise NotFound
check_access('group_show', context, data_dict)
query = model.Session.query(model.PackageRevision)\
.filter(model.PackageRevision.state=='active')\
.filter(model.PackageRevision.current==True)\
.join(model.PackageGroup, model.PackageGroup.package_id==model.PackageRevision.id)\
.join(model.Group, model.Group.id==model.PackageGroup.group_id)\
.filter_by(id=group.id)\
.order_by(model.PackageRevision.name)
if limit:
query = query.limit(limit)
result = []
for pkg_rev in query.all():
result.append(package_dictize(pkg_rev, context))
return result
def tag_show(context, data_dict):
'''Shows tag details'''
model = context['model']
api = context.get('api_version') or '1'
id = data_dict['id']
tag = model.Tag.get(id)
context['tag'] = tag
if tag is None:
raise NotFound
check_access('tag_show',context, data_dict)
tag_dict = tag_dictize(tag,context)
extended_packages = []
for package in tag_dict['packages']:
pkg = model.Package.get(package['id'])
extended_packages.append(package_dictize(pkg,context))
tag_dict['packages'] = extended_packages
return tag_dict
def user_show(context, data_dict):
'''Shows user details'''
model = context['model']
user = context['user']
id = data_dict.get('id',None)
provided_user = data_dict.get('user_obj',None)
if id:
user_obj = model.User.get(id)
context['user_obj'] = user_obj
if user_obj is None:
raise NotFound
elif provided_user:
context['user_obj'] = user_obj = provided_user
else:
raise NotFound
check_access('user_show',context, data_dict)
user_dict = user_dictize(user_obj,context)
if not (Authorizer().is_sysadmin(unicode(user)) or user == user_obj.name):
# If not sysadmin or the same user, strip sensible info
del user_dict['apikey']
del user_dict['reset_key']
revisions_q = model.Session.query(model.Revision
).filter_by(author=user_obj.name)
revisions_list = []
for revision in revisions_q.limit(20).all():
revision_dict = revision_show(context,{'id':revision.id})
revision_dict['state'] = revision.state
revisions_list.append(revision_dict)
user_dict['activity'] = revisions_list
return user_dict
def package_show_rest(context, data_dict):
check_access('package_show_rest',context, data_dict)
package_show(context, data_dict)
api = context.get('api_version') or '1'
pkg = context['package']
if api == '1':
package_dict = package_to_api1(pkg, context)
else:
package_dict = package_to_api2(pkg, context)
return package_dict
def group_show_rest(context, data_dict):
check_access('group_show_rest',context, data_dict)
group_show(context, data_dict)
api = context.get('api_version') or '1'
group = context['group']
if api == '2':
group_dict = group_to_api2(group, context)
else:
group_dict = group_to_api1(group, context)
return group_dict
def tag_show_rest(context, data_dict):
check_access('tag_show_rest',context, data_dict)
tag_show(context, data_dict)
api = context.get('api_version') or '1'
tag = context['tag']
if api == '2':
tag_dict = tag_to_api2(tag, context)
else:
tag_dict = tag_to_api1(tag, context)
return tag_dict
def package_autocomplete(context, data_dict):
'''Returns packages containing the provided string in either the name
or the title'''
model = context['model']
session = context['session']
user = context['user']
q = data_dict['q']
like_q = u"%s%%" % q
check_access('package_autocomplete', context, data_dict)
query = model.Session.query(model.PackageRevision)
query = query.filter(model.PackageRevision.state=='active')
query = query.filter(model.PackageRevision.current==True)
query = query.filter(or_(model.PackageRevision.name.ilike(like_q),
model.PackageRevision.title.ilike(like_q)))
query = query.limit(10)
q_lower = q.lower()
pkg_list = []
for package in query:
if package.name.startswith(q_lower):
match_field = 'name'
match_displayed = package.name
else:
match_field = 'title'
match_displayed = '%s (%s)' % (package.title, package.name)
result_dict = {'name':package.name, 'title':package.title,
'match_field':match_field, 'match_displayed':match_displayed}
pkg_list.append(result_dict)
return pkg_list
def tag_autocomplete(context, data_dict):
'''Returns tags containing the provided string'''
model = context['model']
session = context['session']
user = context['user']
check_access('tag_autocomplete', context, data_dict)
q = data_dict.get('q', None)
if not q:
return []
limit = data_dict.get('limit',10)
query = query_for('tag')
query.run(query=q,
return_objects=True,
limit=10,
username=user)
return [tag.name for tag in query.results]
def format_autocomplete(context, data_dict):
'''Returns formats containing the provided string'''
model = context['model']
session = context['session']
user = context['user']
check_access('format_autocomplete', context, data_dict)
q = data_dict.get('q', None)
if not q:
return []
limit = data_dict.get('limit', 5)
like_q = u'%' + q + u'%'
query = session.query(model.ResourceRevision.format,
func.count(model.ResourceRevision.format).label('total'))\
.filter(and_(
model.ResourceRevision.state == 'active',
model.ResourceRevision.current == True
))\
.filter(model.ResourceRevision.format.ilike(like_q))\
.group_by(model.ResourceRevision.format)\
.order_by('total DESC')\
.limit(limit)
return [resource.format for resource in query]
def user_autocomplete(context, data_dict):
'''Returns users containing the provided string'''
model = context['model']
session = context['session']
user = context['user']
q = data_dict.get('q',None)
if not q:
return []
check_access('user_autocomplete', context, data_dict)
limit = data_dict.get('limit',20)
query = model.User.search(q).limit(limit)
user_list = []
for user in query.all():
result_dict = {}
for k in ['id', 'name', 'fullname']:
result_dict[k] = getattr(user,k)
user_list.append(result_dict)
return user_list
def package_search(context, data_dict):
model = context['model']
session = context['session']
user = context['user']
check_access('package_search', context, data_dict)
# return a list of package ids
data_dict['fl'] = 'id'
query = query_for(model.Package)
query.run(data_dict)
results = []
for package in query.results:
# get the package object
pkg_query = session.query(model.PackageRevision)\
.filter(model.PackageRevision.id == package)\
.filter(and_(
model.PackageRevision.state == u'active',
model.PackageRevision.current == True
))
pkg = pkg_query.first()
## if the index has got a package that is not in ckan then
## ignore it.
if not pkg:
log.warning('package %s in index but not in database' % package)
continue
result_dict = package_dictize(pkg,context)
results.append(result_dict)
return {
'count': query.count,
'facets': query.facets,
'results': results
}
def _extend_package_dict(package_dict,context):
model = context['model']
resources = model.Session.query(model.Resource)\
.join(model.ResourceGroup)\
.filter(model.ResourceGroup.package_id == package_dict['id'])\
.all()
if resources:
package_dict['resources'] = resource_list_dictize(resources, context)
else:
package_dict['resources'] = []
license_id = package_dict.get('license_id')
if license_id:
try:
isopen = model.Package.get_license_register()[license_id].isopen()
except KeyError:
isopen = False
package_dict['isopen'] = isopen
else:
package_dict['isopen'] = False
return package_dict
def resource_search(context, data_dict):
model = context['model']
session = context['session']
fields = data_dict['fields']
order_by = data_dict.get('order_by')
offset = data_dict.get('offset')
limit = data_dict.get('limit')
# TODO: should we check for user authentication first?
q = model.Session.query(model.Resource)
resource_fields = model.Resource.get_columns()
for field, terms in fields.items():
if isinstance(terms, basestring):
terms = terms.split()
if field not in resource_fields:
raise SearchError('Field "%s" not recognised in Resource search.' % field)
for term in terms:
model_attr = getattr(model.Resource, field)
if field == 'hash':
q = q.filter(model_attr.ilike(unicode(term) + '%'))
elif field in model.Resource.get_extra_columns():
model_attr = getattr(model.Resource, 'extras')
like = or_(
model_attr.ilike(u'''%%"%s": "%%%s%%",%%''' % (field, term)),
model_attr.ilike(u'''%%"%s": "%%%s%%"}''' % (field, term))
)
q = q.filter(like)
else:
q = q.filter(model_attr.ilike('%' + unicode(term) + '%'))
if order_by is not None:
if hasattr(model.Resource, order_by):
q = q.order_by(getattr(model.Resource, order_by))
count = q.count()
q = q.offset(offset)
q = q.limit(limit)
results = []
for result in q:
if isinstance(result, tuple) and isinstance(result[0], model.DomainObject):
# This is the case for order_by rank due to the add_column.
results.append(result[0])
else:
results.append(result)
return {'count': count, 'results': results}
def tag_search(context, data_dict):
model = context['model']
session = context['session']
query = data_dict.get('query')
terms = [query] if query else []
fields = data_dict.get('fields', {})
offset = data_dict.get('offset')
limit = data_dict.get('limit')
# TODO: should we check for user authentication first?
q = model.Session.query(model.Tag)
q = q.distinct().join(model.Tag.package_tags)
for field, value in fields.items():
if field in ('tag', 'tags'):
terms.append(value)
if not len(terms):
return
for term in terms:
escaped_term = misc.escape_sql_like_special_characters(term, escape='\\')
q = q.filter(model.Tag.name.ilike('%' + escaped_term + '%'))
count = q.count()
q = q.offset(offset)
q = q.limit(limit)
results = [r for r in q]
return {'count': count, 'results': results}
def task_status_show(context, data_dict):
model = context['model']
id = data_dict.get('id')
if id:
task_status = model.TaskStatus.get(id)
else:
query = model.Session.query(model.TaskStatus)\
.filter(and_(
model.TaskStatus.entity_id == data_dict['entity_id'],
model.TaskStatus.task_type == data_dict['task_type'],
model.TaskStatus.key == data_dict['key']
))
task_status = query.first()
context['task_status'] = task_status
if task_status is None:
raise NotFound
check_access('task_status_show', context, data_dict)
task_status_dict = task_status_dictize(task_status, context)
return task_status_dict
def get_site_user(context, data_dict):
check_access('get_site_user', context, data_dict)
model = context['model']
site_id = config.get('ckan.site_id', 'ckan_site_user')
user = model.User.get(site_id)
if not user:
apikey = str(uuid.uuid4())
user = model.User(name=site_id,
password=apikey,
apikey=apikey)
model.add_user_to_role(user, model.Role.ADMIN, model.System())
model.Session.add(user)
model.Session.flush()
if not context.get('defer_commit'):
model.Session.commit()
return {'name': user.name,
'apikey': user.apikey}
def status_show(context, data_dict):
'''Provides information about the operation of this CKAN instance.'''
return {
'site_title': config.get('ckan.site_title'),
'site_description': config.get('ckan.site_description'),
'site_url': config.get('ckan.site_url'),
'ckan_version': ckan.__version__,
'error_emails_to': config.get('email_to'),
'locale_default': config.get('ckan.locale_default'),
'extensions': config.get('ckan.plugins').split(),
}
def activity_show(context, data_dict):
'''Return a user's public activity stream as a list of dicts.'''
model = context['model']
user_id = data_dict['id']
activity_objects = model.Session.query(
model.activity.Activity).filter_by(user_id=user_id).all()
return activity_list_dictize(activity_objects, context)
def activity_detail_show(context, data_dict):
'''Return an activity's list of activity detail items, as a list of dicts.
'''
model = context['model']
activity_id = data_dict['id']
activity_detail_objects = model.Session.query(
model.activity.ActivityDetail).filter_by(activity_id=activity_id).all()
return activity_detail_list_dictize(activity_detail_objects, context)