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author | David Garcia Quintas <dgq@google.com> | 2015-08-24 12:34:18 -0700 |
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committer | David Garcia Quintas <dgq@google.com> | 2015-08-24 12:34:18 -0700 |
commit | 02dda837da53aaa697a35d15c7d6bdd160ae8290 (patch) | |
tree | 3f99fd01b4a4e5c07d8b4e05567b9c6cc5a41771 /src/python/grpcio_test/grpc_test/framework/interfaces/links | |
parent | fe5f25490d4e290ecf2fc52de64c1230429fd0a3 (diff) | |
parent | 28ed2fbfb81f7ee9a9b449324f6c27062864b082 (diff) |
Merge branch 'master' of github.com:grpc/grpc into channel_args_compression
Diffstat (limited to 'src/python/grpcio_test/grpc_test/framework/interfaces/links')
-rw-r--r-- | src/python/grpcio_test/grpc_test/framework/interfaces/links/test_utilities.py | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/src/python/grpcio_test/grpc_test/framework/interfaces/links/test_utilities.py b/src/python/grpcio_test/grpc_test/framework/interfaces/links/test_utilities.py index 6c2e3346aa..a2bd7107c1 100644 --- a/src/python/grpcio_test/grpc_test/framework/interfaces/links/test_utilities.py +++ b/src/python/grpcio_test/grpc_test/framework/interfaces/links/test_utilities.py @@ -29,9 +29,42 @@ """State and behavior appropriate for use in tests.""" +import logging import threading +import time from grpc.framework.interfaces.links import links +from grpc.framework.interfaces.links import utilities + +# A more-or-less arbitrary limit on the length of raw data values to be logged. +_UNCOMFORTABLY_LONG = 48 + + +def _safe_for_log_ticket(ticket): + """Creates a safe-for-printing-to-the-log ticket for a given ticket. + + Args: + ticket: Any links.Ticket. + + Returns: + A links.Ticket that is as much as can be equal to the given ticket but + possibly features values like the string "<payload of length 972321>" in + place of the actual values of the given ticket. + """ + if isinstance(ticket.payload, (basestring,)): + payload_length = len(ticket.payload) + else: + payload_length = -1 + if payload_length < _UNCOMFORTABLY_LONG: + return ticket + else: + return links.Ticket( + ticket.operation_id, ticket.sequence_number, + ticket.group, ticket.method, ticket.subscription, ticket.timeout, + ticket.allowance, ticket.initial_metadata, + '<payload of length {}>'.format(payload_length), + ticket.terminal_metadata, ticket.code, ticket.message, + ticket.termination) class RecordingLink(links.Link): @@ -64,3 +97,71 @@ class RecordingLink(links.Link): """Returns a copy of the list of all tickets received by this Link.""" with self._condition: return tuple(self._tickets) + + +class _Pipe(object): + """A conduit that logs all tickets passed through it.""" + + def __init__(self, name): + self._lock = threading.Lock() + self._name = name + self._left_mate = utilities.NULL_LINK + self._right_mate = utilities.NULL_LINK + + def accept_left_to_right_ticket(self, ticket): + with self._lock: + logging.warning( + '%s: moving left to right through %s: %s', time.time(), self._name, + _safe_for_log_ticket(ticket)) + try: + self._right_mate.accept_ticket(ticket) + except Exception as e: # pylint: disable=broad-except + logging.exception(e) + + def accept_right_to_left_ticket(self, ticket): + with self._lock: + logging.warning( + '%s: moving right to left through %s: %s', time.time(), self._name, + _safe_for_log_ticket(ticket)) + try: + self._left_mate.accept_ticket(ticket) + except Exception as e: # pylint: disable=broad-except + logging.exception(e) + + def join_left_mate(self, left_mate): + with self._lock: + self._left_mate = utilities.NULL_LINK if left_mate is None else left_mate + + def join_right_mate(self, right_mate): + with self._lock: + self._right_mate = ( + utilities.NULL_LINK if right_mate is None else right_mate) + + +class _Facade(links.Link): + + def __init__(self, accept, join): + self._accept = accept + self._join = join + + def accept_ticket(self, ticket): + self._accept(ticket) + + def join_link(self, link): + self._join(link) + + +def logging_links(name): + """Creates a conduit that logs all tickets passed through it. + + Args: + name: A name to use for the conduit to identify itself in logging output. + + Returns: + Two links.Links, the first of which is the "left" side of the conduit + and the second of which is the "right" side of the conduit. + """ + pipe = _Pipe(name) + left_facade = _Facade(pipe.accept_left_to_right_ticket, pipe.join_left_mate) + right_facade = _Facade(pipe.accept_right_to_left_ticket, pipe.join_right_mate) + return left_facade, right_facade |