diff options
author | Richard Belleville <rbellevi@google.com> | 2018-11-07 11:28:52 -0800 |
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committer | Richard Belleville <rbellevi@google.com> | 2018-11-09 08:47:42 -0800 |
commit | ecd90634248ce495dd1dca41c77254ce7877f6db (patch) | |
tree | 0684cf8f24f7beb14e8dba0d945dabf5b56f8cc4 /src/python/grpcio/grpc | |
parent | 01c6565fb5a9631f6f1dd4f81662af711cab30aa (diff) |
Use single NullHandler for whole library
I was trying to get a feel for what the rest of the python ecosystem
does with its logging, so I looked into the top few libraries on pypi:
urllib3 maintains a logger for not quite every module, but for each
one that does heavy lifting. The logger name is `__name__`, and no
handlers are registered for any module-level loggers, including
NullHandler. Their documentation spells out how to configure logging
for the library.
They explicitly configure a library root-level logger called `urllib3`
to which they attach a `NullHandler`. This addresses the "no handlers
could be found" problem.
Their tests explicitly configure handlers, just like ours do.
scrapy is more hands-on. It provides a configuration module for its
logging and a whole document on how to handle logging with scrapy. It
looks like log.py's whole reason for existence is making sure that a
handler is attached to to the scrapy handler at startup.
I think the extra complexity here is because scrapy also offers a CLI,
so there has to be some way to configure logging without resorting to
writing python, so I felt we didn't need to resort to this added
complexity.
---
Based on all of the libraries I've looked at, I think our current
approach is reasonable. The one change I would make is to explicitly
configure a `grpc` logger and to only attach a `NullHandler` to it
instead of putting the burden on the author of each new module to
configure it there.
With this change, I have
- Configured a logger in each module that cares about logging
- Removed all NullHandlers attached to module-level loggers
- Explicitly configured a `grpc` logger with a `NullHandler` attached
Resolves: #16572
Related: #17064
Diffstat (limited to 'src/python/grpcio/grpc')
9 files changed, 3 insertions, 9 deletions
diff --git a/src/python/grpcio/grpc/__init__.py b/src/python/grpcio/grpc/__init__.py index df98dd10ad..8c15e54082 100644 --- a/src/python/grpcio/grpc/__init__.py +++ b/src/python/grpcio/grpc/__init__.py @@ -15,12 +15,14 @@ import abc import enum +import logging import sys - import six from grpc._cython import cygrpc as _cygrpc +logging.getLogger(__name__).addHandler(logging.NullHandler()) + ############################## Future Interface ############################### diff --git a/src/python/grpcio/grpc/_channel.py b/src/python/grpcio/grpc/_channel.py index 3ff7658748..ab154d8512 100644 --- a/src/python/grpcio/grpc/_channel.py +++ b/src/python/grpcio/grpc/_channel.py @@ -25,7 +25,6 @@ from grpc._cython import cygrpc from grpc.framework.foundation import callable_util _LOGGER = logging.getLogger(__name__) -_LOGGER.addHandler(logging.NullHandler()) _USER_AGENT = 'grpc-python/{}'.format(_grpcio_metadata.__version__) diff --git a/src/python/grpcio/grpc/_common.py b/src/python/grpcio/grpc/_common.py index 42f3a4e614..f69127e38e 100644 --- a/src/python/grpcio/grpc/_common.py +++ b/src/python/grpcio/grpc/_common.py @@ -21,7 +21,6 @@ import grpc from grpc._cython import cygrpc _LOGGER = logging.getLogger(__name__) -_LOGGER.addHandler(logging.NullHandler()) CYGRPC_CONNECTIVITY_STATE_TO_CHANNEL_CONNECTIVITY = { cygrpc.ConnectivityState.idle: diff --git a/src/python/grpcio/grpc/_cython/_cygrpc/grpc_string.pyx.pxi b/src/python/grpcio/grpc/_cython/_cygrpc/grpc_string.pyx.pxi index fa356d913e..00a1b23a67 100644 --- a/src/python/grpcio/grpc/_cython/_cygrpc/grpc_string.pyx.pxi +++ b/src/python/grpcio/grpc/_cython/_cygrpc/grpc_string.pyx.pxi @@ -15,7 +15,6 @@ import logging _LOGGER = logging.getLogger(__name__) -_LOGGER.addHandler(logging.NullHandler()) # This function will ascii encode unicode string inputs if neccesary. # In Python3, unicode strings are the default str type. diff --git a/src/python/grpcio/grpc/_cython/_cygrpc/server.pyx.pxi b/src/python/grpcio/grpc/_cython/_cygrpc/server.pyx.pxi index f9d1e863ca..ce701724fd 100644 --- a/src/python/grpcio/grpc/_cython/_cygrpc/server.pyx.pxi +++ b/src/python/grpcio/grpc/_cython/_cygrpc/server.pyx.pxi @@ -19,7 +19,6 @@ import time import grpc _LOGGER = logging.getLogger(__name__) -_LOGGER.addHandler(logging.NullHandler()) cdef class Server: diff --git a/src/python/grpcio/grpc/_plugin_wrapping.py b/src/python/grpcio/grpc/_plugin_wrapping.py index 53af2ff913..916ee080b6 100644 --- a/src/python/grpcio/grpc/_plugin_wrapping.py +++ b/src/python/grpcio/grpc/_plugin_wrapping.py @@ -21,7 +21,6 @@ from grpc import _common from grpc._cython import cygrpc _LOGGER = logging.getLogger(__name__) -_LOGGER.addHandler(logging.NullHandler()) class _AuthMetadataContext( diff --git a/src/python/grpcio/grpc/framework/foundation/callable_util.py b/src/python/grpcio/grpc/framework/foundation/callable_util.py index 36066e19df..24daf3406f 100644 --- a/src/python/grpcio/grpc/framework/foundation/callable_util.py +++ b/src/python/grpcio/grpc/framework/foundation/callable_util.py @@ -22,7 +22,6 @@ import logging import six _LOGGER = logging.getLogger(__name__) -_LOGGER.addHandler(logging.NullHandler()) class Outcome(six.with_metaclass(abc.ABCMeta)): diff --git a/src/python/grpcio/grpc/framework/foundation/logging_pool.py b/src/python/grpcio/grpc/framework/foundation/logging_pool.py index dfb8dbdc30..216e3990db 100644 --- a/src/python/grpcio/grpc/framework/foundation/logging_pool.py +++ b/src/python/grpcio/grpc/framework/foundation/logging_pool.py @@ -18,7 +18,6 @@ import logging from concurrent import futures _LOGGER = logging.getLogger(__name__) -_LOGGER.addHandler(logging.NullHandler()) def _wrap(behavior): diff --git a/src/python/grpcio/grpc/framework/foundation/stream_util.py b/src/python/grpcio/grpc/framework/foundation/stream_util.py index e03130cced..1faaf29bd7 100644 --- a/src/python/grpcio/grpc/framework/foundation/stream_util.py +++ b/src/python/grpcio/grpc/framework/foundation/stream_util.py @@ -20,7 +20,6 @@ from grpc.framework.foundation import stream _NO_VALUE = object() _LOGGER = logging.getLogger(__name__) -_LOGGER.addHandler(logging.NullHandler()) class TransformingConsumer(stream.Consumer): |