PEP 578 added Python Audit hooks. A rich variety of events (module load, os interactions and so on) triggers audit events which you can subscribe to.
Here's how to do that. First create an embedded python hook:
Class User.Python
{
ClassMethod Audit() [ Language = python ]
{
import sys
import time
def logger(event,args):
#sys.exit(0)
if event=='import':
module = args[0]
print(f"Loading {module}")
if module == "numpy":
print(f"Module {module} forbidden. Terminating process in 3.")
time.sleep(3)
sys.exit(0)
elif event in ('compile','exec'):
print(f"{event}: {args}")
elif event in ('code.__new__','open'):
# do nothing for this event
x=1
else:
print(f"{event}")
sys.addaudithook(logger)
}
}
In this example we:
- terminate the process if numpy starts loading,
- Output event and arguments for compile/exec events
- Ignore code events
- Log all other events
All of that will be written to the default STDOUT.
To start auditing it's enough to call this method to register your hook, or you can even do it automatically on job start:
%ZSTART
JOB
new $namespace
set $namespace = "%SYS"
do ##class(User.Py).Audit()
Here's a sample output:
%SYS>:PY
Loading code
exec: (<code object <module> at 0x000001AB82A0F2F0, file "c:\intersystems\iris\lib\python\lib\code.py", line 1>,)
Loading traceback
exec: (<code object <module> at 0x000001AB82A173A0, file "c:\intersystems\iris\lib\python\lib\traceback.py", line 1>,)
Loading linecache
exec: (<code object <module> at 0x000001AB82A17A80, file "c:\intersystems\iris\lib\python\lib\linecache.py", line 1>,)
Loading tokenize
exec: (<code object <module> at 0x000001AB82A32030, file "c:\intersystems\iris\lib\python\lib\tokenize.py", line 1>,)
Loading token
exec: (<code object <module> at 0x000001AB82A323A0, file "c:\intersystems\iris\lib\python\lib\token.py", line 1>,)
compile: (b'lambda _cls, type, string, start, end, line: _tuple_new(_cls, (type, string, start, end, line))', '<string>')
exec: (<code object <module> at 0x000001AB82A32710, file "<string>", line 1>,)
sys._getframe
object.__setattr__
Loading codeop
exec: (<code object <module> at 0x000001AB82A32EA0, file "c:\intersystems\iris\lib\python\lib\codeop.py", line 1>,)
Loading __future__
exec: (<code object <module> at 0x000001AB82A472F0, file "c:\intersystems\iris\lib\python\lib\__future__.py", line 1>,)
Python 3.9.5 (default, May 31 2022, 12:35:47) [MSC v.1927 64 bit (AMD64)] on win32
Type quit() or Ctrl-D to exit this shell.
compile: (b'import iris', '<input>')
compile: (b'import iris\n', '<input>')
compile: (b'import iris\n\n', '<input>')
exec: (<code object <module> at 0x000001AB82A60870, file "<input>", line 1>,)
>>> import json
compile: (b'import json', '<input>')
compile: (b'import json\n', '<input>')
compile: (b'import json\n\n', '<input>')
exec: (<code object <module> at 0x000001AB82A60870, file "<input>", line 1>,)
Loading json
exec: (<code object <module> at 0x000001AB82A60DF0, file "c:\intersystems\iris\lib\python\lib\json\__init__.py", line 1>,)
Loading json.decoder
os.listdir
exec: (<code object <module> at 0x000001AB82A67710, file "c:\intersystems\iris\lib\python\lib\json\decoder.py", line 1>,)
Loading json.scanner
exec: (<code object <module> at 0x000001AB82A679D0, file "c:\intersystems\iris\lib\python\lib\json\scanner.py", line 1>,)
Loading _json
Loading json.encoder
exec: (<code object <module> at 0x000001AB82A71500, file "c:\intersystems\iris\lib\python\lib\json\encoder.py", line 1>,)
>>> x=1
compile: (b'x=1', '<input>')
compile: (b'x=1\n', '<input>')
compile: (b'x=1\n\n', '<input>')
exec: (<code object <module> at 0x000001AB82A60870, file "<input>", line 1>,)
I find it can be helpful for debugging.
