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pyhelper: Add ability to route error messages to python logging

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Instead of writing error messages to stderr, route them into the
python code and use the standard python logging system.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2016-11-30 12:04:28 -05:00
parent b14db404b5
commit 4f07ee4d92
7 changed files with 67 additions and 29 deletions
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14
klippy/chelper.py
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@ -71,6 +71,10 @@ defs_serialqueue = """
, struct pull_queue_message *q, int max);
"""
defs_pyhelper = """
void set_python_logging_callback(void (*func)(const char *));
"""
# Return the list of file modification times
def get_mtimes(srcdir, filelist):
out = []
@ -95,15 +99,23 @@ def check_build_code(srcdir):
FFI_main = None
FFI_lib = None
pyhelper_logging_callback = None
# Return the Foreign Function Interface api to the caller
def get_ffi():
global FFI_main, FFI_lib
global FFI_main, FFI_lib, pyhelper_logging_callback
if FFI_lib is None:
srcdir = os.path.dirname(os.path.realpath(__file__))
check_build_code(srcdir)
FFI_main = cffi.FFI()
FFI_main.cdef(defs_stepcompress)
FFI_main.cdef(defs_serialqueue)
FFI_main.cdef(defs_pyhelper)
FFI_lib = FFI_main.dlopen(os.path.join(srcdir, DEST_LIB))
# Setup error logging
def logging_callback(msg):
logging.error(FFI_main.string(msg))
pyhelper_logging_callback = FFI_main.callback(
"void(const char *)", logging_callback)
FFI_lib.set_python_logging_callback(pyhelper_logging_callback)
return FFI_main, FFI_lib