mirror of https://github.com/watcha-fr/synapse
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
113 lines
3.7 KiB
113 lines
3.7 KiB
# -*- coding: utf-8 -*-
|
|
# Copyright 2014, 2015 OpenMarket Ltd
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
""" This module contains base REST classes for constructing REST servlets. """
|
|
|
|
from synapse.api.errors import SynapseError
|
|
|
|
import logging
|
|
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
def parse_integer(request, name, default=None, required=False):
|
|
if name in request.args:
|
|
try:
|
|
return int(request.args[name][0])
|
|
except:
|
|
message = "Query parameter %r must be an integer" % (name,)
|
|
raise SynapseError(400, message)
|
|
else:
|
|
if required:
|
|
message = "Missing integer query parameter %r" % (name,)
|
|
raise SynapseError(400, message)
|
|
else:
|
|
return default
|
|
|
|
|
|
def parse_boolean(request, name, default=None, required=False):
|
|
if name in request.args:
|
|
try:
|
|
return {
|
|
"true": True,
|
|
"false": False,
|
|
}[request.args[name][0]]
|
|
except:
|
|
message = (
|
|
"Boolean query parameter %r must be one of"
|
|
" ['true', 'false']"
|
|
) % (name,)
|
|
raise SynapseError(400, message)
|
|
else:
|
|
if required:
|
|
message = "Missing boolean query parameter %r" % (name,)
|
|
raise SynapseError(400, message)
|
|
else:
|
|
return default
|
|
|
|
|
|
def parse_string(request, name, default=None, required=False,
|
|
allowed_values=None, param_type="string"):
|
|
if name in request.args:
|
|
value = request.args[name][0]
|
|
if allowed_values is not None and value not in allowed_values:
|
|
message = "Query parameter %r must be one of [%s]" % (
|
|
name, ", ".join(repr(v) for v in allowed_values)
|
|
)
|
|
raise SynapseError(message)
|
|
else:
|
|
return value
|
|
else:
|
|
if required:
|
|
message = "Missing %s query parameter %r" % (param_type, name)
|
|
raise SynapseError(400, message)
|
|
else:
|
|
return default
|
|
|
|
|
|
class RestServlet(object):
|
|
|
|
""" A Synapse REST Servlet.
|
|
|
|
An implementing class can either provide its own custom 'register' method,
|
|
or use the automatic pattern handling provided by the base class.
|
|
|
|
To use this latter, the implementing class instead provides a `PATTERN`
|
|
class attribute containing a pre-compiled regular expression. The automatic
|
|
register method will then use this method to register any of the following
|
|
instance methods associated with the corresponding HTTP method:
|
|
|
|
on_GET
|
|
on_PUT
|
|
on_POST
|
|
on_DELETE
|
|
on_OPTIONS
|
|
|
|
Automatically handles turning CodeMessageExceptions thrown by these methods
|
|
into the appropriate HTTP response.
|
|
"""
|
|
|
|
def register(self, http_server):
|
|
""" Register this servlet with the given HTTP server. """
|
|
if hasattr(self, "PATTERN"):
|
|
pattern = self.PATTERN
|
|
|
|
for method in ("GET", "PUT", "POST", "OPTIONS", "DELETE"):
|
|
if hasattr(self, "on_%s" % (method,)):
|
|
method_handler = getattr(self, "on_%s" % (method,))
|
|
http_server.register_path(method, pattern, method_handler)
|
|
else:
|
|
raise NotImplementedError("RestServlet must register something.")
|
|
|