diff options
Diffstat (limited to 'synapse/http/client.py')
| -rw-r--r-- | synapse/http/client.py | 197 |
1 files changed, 141 insertions, 56 deletions
diff --git a/synapse/http/client.py b/synapse/http/client.py index ca2f770f5d..70a19d9b74 100644 --- a/synapse/http/client.py +++ b/synapse/http/client.py @@ -1,5 +1,6 @@ # -*- coding: utf-8 -*- # Copyright 2014-2016 OpenMarket Ltd +# Copyright 2018 New Vector Ltd # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. @@ -16,9 +17,12 @@ from OpenSSL import SSL from OpenSSL.SSL import VERIFY_NONE from synapse.api.errors import ( - CodeMessageException, SynapseError, Codes, + CodeMessageException, MatrixCodeMessageException, SynapseError, Codes, ) -from synapse.util.logcontext import preserve_context_over_fn +from synapse.http import cancelled_to_request_timed_out_error +from synapse.util.async import add_timeout_to_deferred +from synapse.util.caches import CACHE_SIZE_FACTOR +from synapse.util.logcontext import make_deferred_yieldable import synapse.metrics from synapse.http.endpoint import SpiderEndpoint @@ -29,13 +33,14 @@ from twisted.internet.endpoints import HostnameEndpoint, wrapClientTLS from twisted.web.client import ( BrowserLikeRedirectAgent, ContentDecoderAgent, GzipDecoder, Agent, readBody, PartialDownloadError, + HTTPConnectionPool, ) from twisted.web.client import FileBodyProducer as TwistedFileBodyProducer from twisted.web.http import PotentialDataLoss from twisted.web.http_headers import Headers from twisted.web._newclient import ResponseDone -from StringIO import StringIO +from six import StringIO import simplejson as json import logging @@ -63,92 +68,139 @@ class SimpleHttpClient(object): """ def __init__(self, hs): self.hs = hs + + pool = HTTPConnectionPool(reactor) + + # the pusher makes lots of concurrent SSL connections to sygnal, and + # tends to do so in batches, so we need to allow the pool to keep lots + # of idle connections around. + pool.maxPersistentPerHost = max((100 * CACHE_SIZE_FACTOR, 5)) + pool.cachedConnectionTimeout = 2 * 60 + # The default context factory in Twisted 14.0.0 (which we require) is # BrowserLikePolicyForHTTPS which will do regular cert validation # 'like a browser' self.agent = Agent( reactor, connectTimeout=15, - contextFactory=hs.get_http_client_context_factory() + contextFactory=hs.get_http_client_context_factory(), + pool=pool, ) self.user_agent = hs.version_string + self.clock = hs.get_clock() if hs.config.user_agent_suffix: self.user_agent = "%s %s" % (self.user_agent, hs.config.user_agent_suffix,) + @defer.inlineCallbacks def request(self, method, uri, *args, **kwargs): # A small wrapper around self.agent.request() so we can easily attach # counters to it outgoing_requests_counter.inc(method) - d = preserve_context_over_fn( - self.agent.request, - method, uri, *args, **kwargs - ) logger.info("Sending request %s %s", method, uri) - def _cb(response): + try: + request_deferred = self.agent.request( + method, uri, *args, **kwargs + ) + add_timeout_to_deferred( + request_deferred, + 60, cancelled_to_request_timed_out_error, + ) + response = yield make_deferred_yieldable(request_deferred) + incoming_responses_counter.inc(method, response.code) logger.info( "Received response to %s %s: %s", method, uri, response.code ) - return response - - def _eb(failure): + defer.returnValue(response) + except Exception as e: incoming_responses_counter.inc(method, "ERR") logger.info( "Error sending request to %s %s: %s %s", - method, uri, failure.type, failure.getErrorMessage() + method, uri, type(e).__name__, e.message ) - return failure + raise e - d.addCallbacks(_cb, _eb) + @defer.inlineCallbacks + def post_urlencoded_get_json(self, uri, args={}, headers=None): + """ + Args: + uri (str): + args (dict[str, str|List[str]]): query params + headers (dict[str, List[str]]|None): If not None, a map from + header name to a list of values for that header - return d + Returns: + Deferred[object]: parsed json + """ - @defer.inlineCallbacks - def post_urlencoded_get_json(self, uri, args={}): # TODO: Do we ever want to log message contents? logger.debug("post_urlencoded_get_json args: %s", args) query_bytes = urllib.urlencode(encode_urlencode_args(args), True) + actual_headers = { + b"Content-Type": [b"application/x-www-form-urlencoded"], + b"User-Agent": [self.user_agent], + } + if headers: + actual_headers.update(headers) + response = yield self.request( "POST", uri.encode("ascii"), - headers=Headers({ - b"Content-Type": [b"application/x-www-form-urlencoded"], - b"User-Agent": [self.user_agent], - }), + headers=Headers(actual_headers), bodyProducer=FileBodyProducer(StringIO(query_bytes)) ) - body = yield preserve_context_over_fn(readBody, response) + body = yield make_deferred_yieldable(readBody(response)) defer.returnValue(json.loads(body)) @defer.inlineCallbacks - def post_json_get_json(self, uri, post_json): + def post_json_get_json(self, uri, post_json, headers=None): + """ + + Args: + uri (str): + post_json (object): + headers (dict[str, List[str]]|None): If not None, a map from + header name to a list of values for that header + + Returns: + Deferred[object]: parsed json + """ json_str = encode_canonical_json(post_json) logger.debug("HTTP POST %s -> %s", json_str, uri) + actual_headers = { + b"Content-Type": [b"application/json"], + b"User-Agent": [self.user_agent], + } + if headers: + actual_headers.update(headers) + response = yield self.request( "POST", uri.encode("ascii"), - headers=Headers({ - b"Content-Type": [b"application/json"], - b"User-Agent": [self.user_agent], - }), + headers=Headers(actual_headers), bodyProducer=FileBodyProducer(StringIO(json_str)) ) - body = yield preserve_context_over_fn(readBody, response) + body = yield make_deferred_yieldable(readBody(response)) + + if 200 <= response.code < 300: + defer.returnValue(json.loads(body)) + else: + raise self._exceptionFromFailedRequest(response, body) defer.returnValue(json.loads(body)) @defer.inlineCallbacks - def get_json(self, uri, args={}): + def get_json(self, uri, args={}, headers=None): """ Gets some json from the given URI. Args: @@ -157,6 +209,8 @@ class SimpleHttpClient(object): None. **Note**: The value of each key is assumed to be an iterable and *not* a string. + headers (dict[str, List[str]]|None): If not None, a map from + header name to a list of values for that header Returns: Deferred: Succeeds when we get *any* 2xx HTTP response, with the HTTP body as JSON. @@ -164,11 +218,14 @@ class SimpleHttpClient(object): On a non-2xx HTTP response. The response body will be used as the error message. """ - body = yield self.get_raw(uri, args) - defer.returnValue(json.loads(body)) + try: + body = yield self.get_raw(uri, args, headers=headers) + defer.returnValue(json.loads(body)) + except CodeMessageException as e: + raise self._exceptionFromFailedRequest(e.code, e.msg) @defer.inlineCallbacks - def put_json(self, uri, json_body, args={}): + def put_json(self, uri, json_body, args={}, headers=None): """ Puts some json to the given URI. Args: @@ -178,6 +235,8 @@ class SimpleHttpClient(object): None. **Note**: The value of each key is assumed to be an iterable and *not* a string. + headers (dict[str, List[str]]|None): If not None, a map from + header name to a list of values for that header Returns: Deferred: Succeeds when we get *any* 2xx HTTP response, with the HTTP body as JSON. @@ -190,17 +249,21 @@ class SimpleHttpClient(object): json_str = encode_canonical_json(json_body) + actual_headers = { + b"Content-Type": [b"application/json"], + b"User-Agent": [self.user_agent], + } + if headers: + actual_headers.update(headers) + response = yield self.request( "PUT", uri.encode("ascii"), - headers=Headers({ - b"User-Agent": [self.user_agent], - "Content-Type": ["application/json"] - }), + headers=Headers(actual_headers), bodyProducer=FileBodyProducer(StringIO(json_str)) ) - body = yield preserve_context_over_fn(readBody, response) + body = yield make_deferred_yieldable(readBody(response)) if 200 <= response.code < 300: defer.returnValue(json.loads(body)) @@ -211,7 +274,7 @@ class SimpleHttpClient(object): raise CodeMessageException(response.code, body) @defer.inlineCallbacks - def get_raw(self, uri, args={}): + def get_raw(self, uri, args={}, headers=None): """ Gets raw text from the given URI. Args: @@ -220,6 +283,8 @@ class SimpleHttpClient(object): None. **Note**: The value of each key is assumed to be an iterable and *not* a string. + headers (dict[str, List[str]]|None): If not None, a map from + header name to a list of values for that header Returns: Deferred: Succeeds when we get *any* 2xx HTTP response, with the HTTP body at text. @@ -231,46 +296,65 @@ class SimpleHttpClient(object): query_bytes = urllib.urlencode(args, True) uri = "%s?%s" % (uri, query_bytes) + actual_headers = { + b"User-Agent": [self.user_agent], + } + if headers: + actual_headers.update(headers) + response = yield self.request( "GET", uri.encode("ascii"), - headers=Headers({ - b"User-Agent": [self.user_agent], - }) + headers=Headers(actual_headers), ) - body = yield preserve_context_over_fn(readBody, response) + body = yield make_deferred_yieldable(readBody(response)) if 200 <= response.code < 300: defer.returnValue(body) else: raise CodeMessageException(response.code, body) + def _exceptionFromFailedRequest(self, response, body): + try: + jsonBody = json.loads(body) + errcode = jsonBody['errcode'] + error = jsonBody['error'] + return MatrixCodeMessageException(response.code, error, errcode) + except (ValueError, KeyError): + return CodeMessageException(response.code, body) + # XXX: FIXME: This is horribly copy-pasted from matrixfederationclient. # The two should be factored out. @defer.inlineCallbacks - def get_file(self, url, output_stream, max_size=None): + def get_file(self, url, output_stream, max_size=None, headers=None): """GETs a file from a given URL Args: url (str): The URL to GET output_stream (file): File to write the response body to. + headers (dict[str, List[str]]|None): If not None, a map from + header name to a list of values for that header Returns: A (int,dict,string,int) tuple of the file length, dict of the response headers, absolute URI of the response and HTTP response code. """ + actual_headers = { + b"User-Agent": [self.user_agent], + } + if headers: + actual_headers.update(headers) + response = yield self.request( "GET", url.encode("ascii"), - headers=Headers({ - b"User-Agent": [self.user_agent], - }) + headers=Headers(actual_headers), ) - headers = dict(response.headers.getAllRawHeaders()) + resp_headers = dict(response.headers.getAllRawHeaders()) - if 'Content-Length' in headers and headers['Content-Length'] > max_size: + if 'Content-Length' in resp_headers and resp_headers['Content-Length'] > max_size: logger.warn("Requested URL is too large > %r bytes" % (self.max_size,)) raise SynapseError( 502, @@ -291,10 +375,9 @@ class SimpleHttpClient(object): # straight back in again try: - length = yield preserve_context_over_fn( - _readBodyToFile, - response, output_stream, max_size - ) + length = yield make_deferred_yieldable(_readBodyToFile( + response, output_stream, max_size, + )) except Exception as e: logger.exception("Failed to download body") raise SynapseError( @@ -303,7 +386,9 @@ class SimpleHttpClient(object): Codes.UNKNOWN, ) - defer.returnValue((length, headers, response.request.absoluteURI, response.code)) + defer.returnValue( + (length, resp_headers, response.request.absoluteURI, response.code), + ) # XXX: FIXME: This is horribly copy-pasted from matrixfederationclient. @@ -371,7 +456,7 @@ class CaptchaServerHttpClient(SimpleHttpClient): ) try: - body = yield preserve_context_over_fn(readBody, response) + body = yield make_deferred_yieldable(readBody(response)) defer.returnValue(body) except PartialDownloadError as e: # twisted dislikes google's response, no content length. @@ -422,7 +507,7 @@ class SpiderHttpClient(SimpleHttpClient): reactor, SpiderEndpointFactory(hs) ) - ), [('gzip', GzipDecoder)] + ), [(b'gzip', GzipDecoder)] ) # We could look like Chrome: # self.user_agent = ("Mozilla/5.0 (%s) (KHTML, like Gecko) |