feat(server): expose the server debug trace functionality #2650

PProfizi · 2025-10-03T13:01:42Z

No description provided.

codecov · 2025-10-03T13:12:53Z

❌ 5 Tests Failed:

Tests completed	Failed	Passed	Skipped
1778	5	1773	207

View the top 3 failed test(s) by shortest run time

test_server\test_server.py::test_server::TestServer::test_server_debug[server_config5]

Stack Traces | 0.335s run time

self = <test_server.TestServer object at 0x0000021D4BBF7DC0>
server_config = <ansys.dpf.core.server_factory.ServerConfig object at 0x0000021D4BBC08E0>
tmp_path = WindowsPath('D:.../pydpf-core/pydpf-core/.tox.../pytest-of-unknown/pytest-0/test_server_debug_server_confi14')

    def test_server_debug(self, server_config, tmp_path):
        from pathlib import Path
    
        server_instance = start_local_server(config=server_config)
        server_instance.start_debug(tmp_path / Path("DEBUG_TEST_"))
        f = dpf.core.field_from_array([1.0], server=server_instance)
        fwd = dpf.core.operators.utility.forward(any=f, server=server_instance)
        fwd.run()
        server_instance.stop_debug()
        debug_folder = sorted(tmp_path.glob("DEBUG_TEST_*"))
        assert len(debug_folder) == 1
        init_path = debug_folder[0] / Path("init.log")
>       assert init_path.exists()
E       AssertionError: assert False
E        +  where False = exists()
E        +    where exists = WindowsPath('D:.../pydpf-core/pydpf-core/.tox.../pytest-of-unknown/pytest-0/test_server_debug_server_confi14/DEBUG_TEST_2025_11_24-10-24-07/init.log').exists

test_server\test_server.py:194: AssertionError

test_server\test_server.py::test_server::TestServer::test_server_debug[server_config1]

Stack Traces | 0.414s run time

self = <test_server.TestServer object at 0x0000021D4BBF7880>
server_config = <ansys.dpf.core.server_factory.ServerConfig object at 0x0000021D4BB83DC0>
tmp_path = WindowsPath('D:.../pydpf-core/pydpf-core/.tox.../pytest-of-unknown/pytest-0/test_server_debug_server_confi2')

    def test_server_debug(self, server_config, tmp_path):
        from pathlib import Path
    
        server_instance = start_local_server(config=server_config)
        server_instance.start_debug(tmp_path / Path("DEBUG_TEST_"))
        f = dpf.core.field_from_array([1.0], server=server_instance)
        fwd = dpf.core.operators.utility.forward(any=f, server=server_instance)
        fwd.run()
        server_instance.stop_debug()
        debug_folder = sorted(tmp_path.glob("DEBUG_TEST_*"))
        assert len(debug_folder) == 1
        init_path = debug_folder[0] / Path("init.log")
>       assert init_path.exists()
E       AssertionError: assert False
E        +  where False = exists()
E        +    where exists = WindowsPath('D:.../pydpf-core/pydpf-core/.tox.../pytest-of-unknown/pytest-0/test_server_debug_server_confi2/DEBUG_TEST_2025_11_24-10-23-24/init.log').exists

test_server\test_server.py:194: AssertionError

test_server\test_server.py::test_server::TestServer::test_server_debug[server_config4]

Stack Traces | 0.44s run time

self = <test_server.TestServer object at 0x0000021D4BBF7D00>
server_config = <ansys.dpf.core.server_factory.ServerConfig object at 0x0000021D4BBC0880>
tmp_path = WindowsPath('D:.../pydpf-core/pydpf-core/.tox.../pytest-of-unknown/pytest-0/test_server_debug_server_confi11')

    def test_server_debug(self, server_config, tmp_path):
        from pathlib import Path
    
        server_instance = start_local_server(config=server_config)
        server_instance.start_debug(tmp_path / Path("DEBUG_TEST_"))
        f = dpf.core.field_from_array([1.0], server=server_instance)
        fwd = dpf.core.operators.utility.forward(any=f, server=server_instance)
        fwd.run()
        server_instance.stop_debug()
        debug_folder = sorted(tmp_path.glob("DEBUG_TEST_*"))
        assert len(debug_folder) == 1
        init_path = debug_folder[0] / Path("init.log")
>       assert init_path.exists()
E       AssertionError: assert False
E        +  where False = exists()
E        +    where exists = WindowsPath('D:.../pydpf-core/pydpf-core/.tox.../pytest-of-unknown/pytest-0/test_server_debug_server_confi11/DEBUG_TEST_2025_11_24-10-24-05/init.log').exists

test_server\test_server.py:194: AssertionError

test_server.test_server.TestServer::test_server_debug[None]

Stack Traces | 13s run time

self = <test_server.TestServer object at 0x7fa80e989780>, server_config = None
tmp_path = PosixPath('.../pytest-of-runner/pytest-2/test_server_debug_None_2')

    def test_server_debug(self, server_config, tmp_path):
        from pathlib import Path
    
        server_instance = start_local_server(config=server_config)
>       server_instance.start_debug(tmp_path / Path("DEBUG_TEST_"))

test_server/test_server.py:186: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
.../hostedtoolcache/Python/3.10.19....../x64/lib/python3.10.../dpf/core/server_types.py:730: in start_debug
    api.data_processing_set_debug_trace(text=str(folder_path))
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

text = '.../pytest-of-runner/pytest-2/test_server_debug_None_2/DEBUG_TEST_'

    @staticmethod
    def data_processing_set_debug_trace(text):
    	errorSize = ctypes.c_int(0)
    	sError = ctypes.c_wchar_p()
    	res = capi.dll.DataProcessing_set_debug_trace(utils.to_char_ptr(text), ctypes.byref(utils.to_int32(errorSize)), ctypes.byref(sError))
    	if errorSize.value != 0:
>   		raise errors.DPFServerException(sError.value)
E     ansys.dpf.gate.errors.DPFServerException: Invalid API pointer when calling function DataProcessing_set_debug_trace

.../hostedtoolcache/Python/3.10.19....../x64/lib/python3.10.../gate/generated/data_processing_capi.py:73: DPFServerException

test_server\test_server.py::test_server::TestServer::test_server_debug[server_config2]

Stack Traces | 16.7s run time

self = <test_server.TestServer object at 0x0000021D4BBF7B80>
server_config = <ansys.dpf.core.server_factory.ServerConfig object at 0x0000021D4BBC07C0>
tmp_path = WindowsPath('D:.../pydpf-core/pydpf-core/.tox.../pytest-of-unknown/pytest-0/test_server_debug_server_confi5')

    def test_server_debug(self, server_config, tmp_path):
        from pathlib import Path
    
        server_instance = start_local_server(config=server_config)
>       server_instance.start_debug(tmp_path / Path("DEBUG_TEST_"))

test_server\test_server.py:186: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.tox\test-server\lib\site-packages\ansys\dpf\core\server_types.py:730: in start_debug
    api.data_processing_set_debug_trace(text=str(folder_path))
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

text = 'D:\\a\\pydpf-core\\pydpf-core\\.tox\\test-server\\tmp\\pytest-of-unknown\\pytest-0\\test_server_debug_server_confi5\\DEBUG_TEST_'

    @staticmethod
    def data_processing_set_debug_trace(text):
>   	raise NotImplementedError
E    NotImplementedError

.tox\test-server\lib\site-packages\ansys\dpf\gate\generated\data_processing_abstract_api.py:40: NotImplementedError

test_server\test_server.py::test_server::TestServer::test_server_debug[server_config3]

Stack Traces | 16.8s run time

self = <test_server.TestServer object at 0x0000021D4BBF7C40>
server_config = <ansys.dpf.core.server_factory.ServerConfig object at 0x0000021D4BBC0820>
tmp_path = WindowsPath('D:.../pydpf-core/pydpf-core/.tox.../pytest-of-unknown/pytest-0/test_server_debug_server_confi8')

    def test_server_debug(self, server_config, tmp_path):
        from pathlib import Path
    
        server_instance = start_local_server(config=server_config)
        server_instance.start_debug(tmp_path / Path("DEBUG_TEST_"))
        f = dpf.core.field_from_array([1.0], server=server_instance)
        fwd = dpf.core.operators.utility.forward(any=f, server=server_instance)
        fwd.run()
        server_instance.stop_debug()
        debug_folder = sorted(tmp_path.glob("DEBUG_TEST_*"))
        assert len(debug_folder) == 1
        init_path = debug_folder[0] / Path("init.log")
>       assert init_path.exists()
E       AssertionError: assert False
E        +  where False = exists()
E        +    where exists = WindowsPath('D:.../pydpf-core/pydpf-core/.tox.../pytest-of-unknown/pytest-0/test_server_debug_server_confi8/DEBUG_TEST_2025_11_24-10-24-02/init.log').exists

test_server\test_server.py:194: AssertionError

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cbellot000 · 2025-10-03T14:05:21Z

src/ansys/dpf/core/server_types.py

        except:
            warnings.warn(traceback.format_exc())

+    def start_debug(self, folder_path: str | Path):


should it really be at the server API? Wouldn't it be better in core, close to load plugin...

Also, I would create a context manager (similar design to licensing context manager)

Yes I'll put tests but I wanted to validate the API first

I put it at the Server level because it is a specific server you ask for its debug info.
I can make a context manager and also expose it at the ansys.dpf.core level as a global command which would take the global server.

I think it makes sense here, as it is for a given server.

Just a question, I remember we had an issue in the past that was fixed for data sources when the client was in a OS (say Windows) and the server was another (say Linux), that there was some path adaptation. I think that was fixed. Is this affected by that?

I think it makes sense here, as it is for a given server.

Just a question, I remember we had an issue in the past that was fixed for data sources when the client was in a OS (say Windows) and the server was another (say Linux), that there was some path adaptation. I think that was fixed. Is this affected by that?

yes you are right, I am now adding the same logic here.

PProfizi · 2025-10-07T08:31:11Z

@cbellot000 @rafacanton while testing I found a weird behavior:

The test starts a server, sets a folder for the debug trace, then runs a forward operator.
The DEBUG_TEST_*** folder is correctly created for each test configuration, but only the first has a init.log file, with the traces for all 5 runs appended to the same file.

rafacanton · 2025-10-07T08:36:05Z

tests/test_server.py

+        from pathlib import Path
+
+        server_instance = start_local_server(config=server_config)
+        server_instance.start_debug(tmp_path / Path("DEBUG_TEST_"))


You miss a "/" or "" at the end

rafacanton · 2025-10-07T08:37:16Z

@cbellot000 @rafacanton while testing I found a weird behavior:

The test starts a server, sets a folder for the debug trace, then runs a forward operator. The DEBUG_TEST_*** folder is correctly created for each test configuration, but only the first has a init.log file, with the traces for all 5 runs appended to the same file.

@PProfizi The rule is that each new DPF server and thread has its own init.log file. Can you add the "" or "/"? In that case, each DPF server should write a new temp subffolder under the "DEBUG_TEST_" folder and you should see different init files

PProfizi added 2 commits October 3, 2025 14:49

Create in ansys.dpf.core.debug

ba09401

Switch to BaseServer.start_debug and BaseServer.stop_debug

654e0ec

PProfizi requested a review from cbellot000 October 3, 2025 13:01

PProfizi self-assigned this Oct 3, 2025

PProfizi added the enhancement New feature or request label Oct 3, 2025

PProfizi requested a review from rafacanton October 3, 2025 13:10

cbellot000 reviewed Oct 3, 2025

View reviewed changes

PProfizi added 3 commits October 6, 2025 15:37

Adapt path to server os

f5e9ff8

Add a DEFAULT_SERVER_DEBUG global variable

9d14f3f

Add a test

414a4ed

rafacanton reviewed Oct 7, 2025

View reviewed changes

Merge branch 'main' into feat/debug_server_trace

3afef53

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feat(server): expose the server debug trace functionality #2650

feat(server): expose the server debug trace functionality #2650

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