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Merge remote-tracking branch 'origin/develop' into 3218-official-prom

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This commit is contained in:
Amber Brown 2018-05-22 10:50:26 -05:00
commit a8990fa2ec
55 changed files with 1777 additions and 207 deletions
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76
synapse/http/server.py
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@ -13,7 +13,8 @@
# 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.
import cgi
from six.moves import http_client
from synapse.api.errors import (
cs_exception, SynapseError, CodeMessageException, UnrecognizedRequestError, Codes
@ -44,6 +45,18 @@ import simplejson
logger = logging.getLogger(__name__)
HTML_ERROR_TEMPLATE = """<!DOCTYPE html>
<html lang=en>
<head>
<meta charset="utf-8">
<title>Error {code}</title>
</head>
<body>
<p>{msg}</p>
</body>
</html>
"""
def wrap_json_request_handler(h):
"""Wraps a request handler method with exception handling.
@ -102,6 +115,65 @@ def wrap_json_request_handler(h):
return wrap_request_handler_with_logging(wrapped_request_handler)
def wrap_html_request_handler(h):
"""Wraps a request handler method with exception handling.
Also adds logging as per wrap_request_handler_with_logging.
The handler method must have a signature of "handle_foo(self, request)",
where "self" must have a "clock" attribute (and "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
return wrap_request_handler_with_logging(wrapped_request_handler)
def _return_html_error(f, request):
"""Sends an HTML error page corresponding to the given failure
Args:
f (twisted.python.failure.Failure):
request (twisted.web.iweb.IRequest):
"""
if f.check(CodeMessageException):
cme = f.value
code = cme.code
msg = cme.msg
if isinstance(cme, SynapseError):
logger.info(
"%s SynapseError: %s - %s", request, code, msg
)
else:
logger.error(
"Failed handle request %r: %s",
request,
f.getTraceback().rstrip(),
)
else:
code = http_client.INTERNAL_SERVER_ERROR
msg = "Internal server error"
logger.error(
"Failed handle request %r: %s",
request,
f.getTraceback().rstrip(),
)
body = HTML_ERROR_TEMPLATE.format(
code=code, msg=cgi.escape(msg),
).encode("utf-8")
request.setResponseCode(code)
request.setHeader(b"Content-Type", b"text/html; charset=utf-8")
request.setHeader(b"Content-Length", b"%i" % (len(body),))
request.write(body)
finish_request(request)
def wrap_request_handler_with_logging(h):
"""Wraps a request handler to provide logging and metrics
@ -132,7 +204,7 @@ def wrap_request_handler_with_logging(h):
servlet_name = self.__class__.__name__
with request.processing(servlet_name):
with PreserveLoggingContext(request_context):
d = h(self, request)
d = defer.maybeDeferred(h, self, request)
# record the arrival of the request *after*
# dispatching to the handler, so that the handler