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import functools
import inspect
import sys
import pecan
import wsme
import wsme.rest.args
import wsme.rest.json
import wsme.rest.xml
from wsme.utils import is_valid_code
class JSonRenderer(object):
@staticmethod
def __init__(path, extra_vars):
pass
@staticmethod
def render(template_path, namespace):
if 'faultcode' in namespace:
return wsme.rest.json.encode_error(None, namespace)
return wsme.rest.json.encode_result(
namespace['result'],
namespace['datatype']
)
class XMLRenderer(object):
@staticmethod
def __init__(path, extra_vars):
pass
@staticmethod
def render(template_path, namespace):
if 'faultcode' in namespace:
return wsme.rest.xml.encode_error(None, namespace)
return wsme.rest.xml.encode_result(
namespace['result'],
namespace['datatype']
)
pecan.templating._builtin_renderers['wsmejson'] = JSonRenderer
pecan.templating._builtin_renderers['wsmexml'] = XMLRenderer
pecan_json_decorate = pecan.expose(
template='wsmejson:',
content_type='application/json',
generic=False)
pecan_xml_decorate = pecan.expose(
template='wsmexml:',
content_type='application/xml',
generic=False
)
pecan_text_xml_decorate = pecan.expose(
template='wsmexml:',
content_type='text/xml',
generic=False
)
def wsexpose(*args, **kwargs):
sig = wsme.signature(*args, **kwargs)
def decorate(f):
sig(f)
funcdef = wsme.api.FunctionDefinition.get(f)
funcdef.resolve_types(wsme.types.registry)
@functools.wraps(f)
def callfunction(self, *args, **kwargs):
return_type = funcdef.return_type
try:
args, kwargs = wsme.rest.args.get_args(
funcdef, args, kwargs, pecan.request.params, None,
pecan.request.body, pecan.request.content_type
)
if funcdef.pass_request:
kwargs[funcdef.pass_request] = pecan.request
result = f(self, *args, **kwargs)
# NOTE: Support setting of status_code with default 201
pecan.response.status = funcdef.status_code
if isinstance(result, wsme.api.Response):
pecan.response.status = result.status_code
# NOTE(lucasagomes): If the return code is 204
# (No Response) we have to make sure that we are not
# returning anything in the body response and the
# content-length is 0
if result.status_code == 204:
return_type = None
elif not isinstance(result.return_type,
wsme.types.UnsetType):
return_type = result.return_type
result = result.obj
except Exception:
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,
pecan.conf.get('wsme', {}).get('debug', False)
)
finally:
del exception_info
if orig_code and is_valid_code(orig_code):
pecan.response.status = orig_code
else:
pecan.response.status = 500
return data
if return_type is None:
pecan.request.pecan['content_type'] = None
pecan.response.content_type = None
return ''
return dict(
datatype=return_type,
result=result
)
if 'xml' in funcdef.rest_content_types:
pecan_xml_decorate(callfunction)
pecan_text_xml_decorate(callfunction)
if 'json' in funcdef.rest_content_types:
pecan_json_decorate(callfunction)
argspec = inspect.getfullargspec(f)
pecan.util._cfg(callfunction)['argspec'] = argspec
callfunction._wsme_definition = funcdef
return callfunction
return decorate
|
