diff options
Diffstat (limited to 'synapse/http/server.py')
| -rw-r--r-- | synapse/http/server.py | 89 |
1 files changed, 50 insertions, 39 deletions
diff --git a/synapse/http/server.py b/synapse/http/server.py index 6fd13e87d1..72a3d67eb6 100644 --- a/synapse/http/server.py +++ b/synapse/http/server.py @@ -16,10 +16,11 @@ import cgi import collections +import http.client import logging - -from six import PY3 -from six.moves import http_client, urllib +import types +import urllib +from io import BytesIO from canonicaljson import encode_canonical_json, encode_pretty_printed_json, json @@ -38,13 +39,8 @@ from synapse.api.errors import ( SynapseError, UnrecognizedRequestError, ) +from synapse.logging.context import preserve_fn from synapse.util.caches import intern_dict -from synapse.util.logcontext import preserve_fn - -if PY3: - from io import BytesIO -else: - from cStringIO import StringIO as BytesIO logger = logging.getLogger(__name__) @@ -69,16 +65,15 @@ def wrap_json_request_handler(h): The handler method must have a signature of "handle_foo(self, request)", where "request" must be a SynapseRequest. - The handler must return a deferred. If the deferred succeeds we assume that - a response has been sent. If the deferred fails with a SynapseError we use + The handler must return a deferred or a coroutine. If the deferred succeeds + we assume that a response has been sent. If the deferred fails with a SynapseError we use it to send a JSON response with the appropriate HTTP reponse code. If the deferred fails with any other type of error we send a 500 reponse. """ - @defer.inlineCallbacks - def wrapped_request_handler(self, request): + async def wrapped_request_handler(self, request): try: - yield h(self, request) + await h(self, request) except SynapseError as e: code = e.code logger.info("%s SynapseError: %s - %s", request, code, e.msg) @@ -142,10 +137,12 @@ def wrap_html_request_handler(h): where "request" must be a SynapseRequest. """ - def wrapped_request_handler(self, request): - d = defer.maybeDeferred(h, self, request) - d.addErrback(_return_html_error, request) - return d + async def wrapped_request_handler(self, request): + try: + return await h(self, request) + except Exception: + f = failure.Failure() + return _return_html_error(f, request) return wrap_async_request_handler(wrapped_request_handler) @@ -171,7 +168,7 @@ def _return_html_error(f, request): exc_info=(f.type, f.value, f.getTracebackObject()), ) else: - code = http_client.INTERNAL_SERVER_ERROR + code = http.client.INTERNAL_SERVER_ERROR msg = "Internal server error" logger.error( @@ -201,10 +198,9 @@ def wrap_async_request_handler(h): logged until the deferred completes. """ - @defer.inlineCallbacks - def wrapped_async_request_handler(self, request): + async def wrapped_async_request_handler(self, request): with request.processing(): - yield h(self, request) + await h(self, request) # we need to preserve_fn here, because the synchronous render method won't yield for # us (obviously) @@ -270,12 +266,11 @@ class JsonResource(HttpServer, resource.Resource): def render(self, request): """ This gets called by twisted every time someone sends us a request. """ - self._async_render(request) + defer.ensureDeferred(self._async_render(request)) return NOT_DONE_YET @wrap_json_request_handler - @defer.inlineCallbacks - def _async_render(self, request): + async def _async_render(self, request): """ This gets called from render() every time someone sends us a request. This checks if anyone has registered a callback for that method and path. @@ -292,26 +287,19 @@ class JsonResource(HttpServer, resource.Resource): # Now trigger the callback. If it returns a response, we send it # here. If it throws an exception, that is handled by the wrapper # installed by @request_handler. - - def _unquote(s): - if PY3: - # On Python 3, unquote is unicode -> unicode - return urllib.parse.unquote(s) - else: - # On Python 2, unquote is bytes -> bytes We need to encode the - # URL again (as it was decoded by _get_handler_for request), as - # ASCII because it's a URL, and then decode it to get the UTF-8 - # characters that were quoted. - return urllib.parse.unquote(s.encode("ascii")).decode("utf8") - kwargs = intern_dict( { - name: _unquote(value) if value else value + name: urllib.parse.unquote(value) if value else value for name, value in group_dict.items() } ) - callback_return = yield callback(request, **kwargs) + callback_return = callback(request, **kwargs) + + # Is it synchronous? We'll allow this for now. + if isinstance(callback_return, (defer.Deferred, types.CoroutineType)): + callback_return = await callback_return + if callback_return is not None: code, response = callback_return self._send_response(request, code, response) @@ -360,6 +348,29 @@ class JsonResource(HttpServer, resource.Resource): ) +class DirectServeResource(resource.Resource): + def render(self, request): + """ + Render the request, using an asynchronous render handler if it exists. + """ + async_render_callback_name = "_async_render_" + request.method.decode("ascii") + + # Try and get the async renderer + callback = getattr(self, async_render_callback_name, None) + + # No async renderer for this request method. + if not callback: + return super().render(request) + + resp = callback(request) + + # If it's a coroutine, turn it into a Deferred + if isinstance(resp, types.CoroutineType): + defer.ensureDeferred(resp) + + return NOT_DONE_YET + + def _options_handler(request): """Request handler for OPTIONS requests |