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Use CodeMessageException subclass instead

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Parse json errors from get_json client methods and throw special
errors.
This commit is contained in:
David Baker 2017-04-25 19:30:55 +01:00
parent a46982cee9
commit 1a9255c12e
4 changed files with 51 additions and 61 deletions
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11
synapse/api/errors.py
View file

@ -66,6 +66,17 @@ class CodeMessageException(RuntimeError):
return cs_error(self.msg)
class MatrixCodeMessageException(CodeMessageException):
"""An error from a general matrix endpoint, eg. from a proxied Matrix API call.
Attributes:
errcode (str): Matrix error code e.g 'M_FORBIDDEN'
"""
def __init__(self, code, msg, errcode=Codes.UNKNOWN):
super(MatrixCodeMessageException, self).__init__(code, msg)
self.errcode = errcode
class SynapseError(CodeMessageException):
"""A base exception type for matrix errors which have an errcode and error
message (as well as an HTTP status code).

29
synapse/handlers/identity.py
View file

@ -18,7 +18,7 @@
from twisted.internet import defer
from synapse.api.errors import (
CodeMessageException
MatrixCodeMessageException, CodeMessageException
)
from ._base import BaseHandler
from synapse.util.async import run_on_reactor
@ -35,7 +35,7 @@ class IdentityHandler(BaseHandler):
def __init__(self, hs):
super(IdentityHandler, self).__init__(hs)
self.proxy_client = hs.get_matrix_proxy_client()
self.http_client = hs.get_simple_http_client()
self.trusted_id_servers = set(hs.config.trusted_third_party_id_servers)
self.trust_any_id_server_just_for_testing_do_not_use = (
@ -83,13 +83,16 @@ class IdentityHandler(BaseHandler):
data = {}
try:
data = yield self.proxy_client.get_json(
"https://%s%s" % (
data = yield self.http_client.get_json(
"http://%s%s" % (
id_server,
"/_matrix/identity/api/v1/3pid/getValidated3pid"
),
{'sid': creds['sid'], 'client_secret': client_secret}
)
except MatrixCodeMessageException as e:
logger.info("getValidated3pid failed with Matrix error: %r", e)
raise SynapseError(e.code, e.msg, e.errcode)
except CodeMessageException as e:
data = json.loads(e.msg)
@ -118,8 +121,8 @@ class IdentityHandler(BaseHandler):
raise SynapseError(400, "No client_secret in creds")
try:
data = yield self.proxy_client.post_urlencoded_get_json(
"https://%s%s" % (
data = yield self.http_client.post_urlencoded_get_json(
"http://%s%s" % (
id_server, "/_matrix/identity/api/v1/3pid/bind"
),
{
@ -151,14 +154,17 @@ class IdentityHandler(BaseHandler):
params.update(kwargs)
try:
data = yield self.proxy_client.post_json_get_json(
"https://%s%s" % (
data = yield self.http_client.post_json_get_json(
"http://%s%s" % (
id_server,
"/_matrix/identity/api/v1/validate/email/requestToken"
),
params
)
defer.returnValue(data)
except MatrixCodeMessageException as e:
logger.info("Proxied requestToken failed with Matrix error: %r", e)
raise SynapseError(e.code, e.msg, e.errcode)
except CodeMessageException as e:
logger.info("Proxied requestToken failed: %r", e)
raise e
@ -185,14 +191,17 @@ class IdentityHandler(BaseHandler):
params.update(kwargs)
try:
data = yield self.proxy_client.post_json_get_json(
"https://%s%s" % (
data = yield self.http_client.post_json_get_json(
"http://%s%s" % (
id_server,
"/_matrix/identity/api/v1/validate/msisdn/requestToken"
),
params
)
defer.returnValue(data)
except MatrixCodeMessageException as e:
logger.info("Proxied requestToken failed with Matrix error: %r", e)
raise SynapseError(e.code, e.msg, e.errcode)
except CodeMessageException as e:
logger.info("Proxied requestToken failed: %r", e)
raise e

64
synapse/http/client.py
View file

@ -16,7 +16,7 @@ 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
import synapse.metrics
@ -145,8 +145,10 @@ class SimpleHttpClient(object):
body = yield preserve_context_over_fn(readBody, response)
if response.code / 100 >= 4:
raise CodeMessageException(response.code, body)
if 200 <= response.code < 300:
defer.returnValue(json.loads(body))
else:
raise self._exceptionFromFailedRequest(response, body)
defer.returnValue(json.loads(body))
@ -168,7 +170,11 @@ class SimpleHttpClient(object):
error message.
"""
body = yield self.get_raw(uri, args)
defer.returnValue(json.loads(body))
if 200 <= response.code < 300:
defer.returnValue(json.loads(body))
else:
raise self._exceptionFromFailedRequest(response, body)
@defer.inlineCallbacks
def put_json(self, uri, json_body, args={}):
@ -249,6 +255,16 @@ class SimpleHttpClient(object):
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 e:
print e
return CodeMessageException(response.code, body)
# XXX: FIXME: This is horribly copy-pasted from matrixfederationclient.
# The two should be factored out.
@ -309,46 +325,6 @@ class SimpleHttpClient(object):
defer.returnValue((length, headers, response.request.absoluteURI, response.code))
class MatrixProxyClient(object):
"""
An HTTP client that proxies other Matrix endpoints, ie. if the remote endpoint
returns Matrix-style error response, this will raise the appropriate SynapseError
"""
def __init__(self, hs):
self.simpleHttpClient = SimpleHttpClient(hs)
@defer.inlineCallbacks
def post_json_get_json(self, uri, post_json):
try:
result = yield self.simpleHttpClient.post_json_get_json(uri, post_json)
defer.returnValue(result)
except CodeMessageException as cme:
ex = self._tryGetMatrixError(cme)
if ex is not None:
raise ex
raise cme
@defer.inlineCallbacks
def get_json(self, uri, args={}):
try:
result = yield self.simpleHttpClient.get_json(uri, args)
defer.returnValue(result)
except CodeMessageException as cme:
ex = self._tryGetMatrixError(cme)
if ex is not None:
raise ex
raise cme
def _tryGetMatrixError(self, codeMessageException):
try:
errbody = json.loads(codeMessageException.msg)
errcode = errbody['errcode']
errtext = errbody['error']
return SynapseError(codeMessageException.code, errtext, errcode)
except:
return None
# XXX: FIXME: This is horribly copy-pasted from matrixfederationclient.
# The two should be factored out.

8
synapse/server.py
View file

@ -49,9 +49,7 @@ from synapse.handlers.events import EventHandler, EventStreamHandler
from synapse.handlers.initial_sync import InitialSyncHandler
from synapse.handlers.receipts import ReceiptsHandler
from synapse.handlers.read_marker import ReadMarkerHandler
from synapse.http.client import (
SimpleHttpClient, InsecureInterceptableContextFactory, MatrixProxyClient
)
from synapse.http.client import SimpleHttpClient, InsecureInterceptableContextFactory
from synapse.http.matrixfederationclient import MatrixFederationHttpClient
from synapse.notifier import Notifier
from synapse.push.pusherpool import PusherPool
@ -130,7 +128,6 @@ class HomeServer(object):
'filtering',
'http_client_context_factory',
'simple_http_client',
'matrix_proxy_client',
'media_repository',
'federation_transport_client',
'federation_sender',
@ -193,9 +190,6 @@ class HomeServer(object):
def build_simple_http_client(self):
return SimpleHttpClient(self)
def build_matrix_proxy_client(self):
return MatrixProxyClient(self)
def build_v1auth(self):
orf = Auth(self)
# Matrix spec makes no reference to what HTTP status code is returned,