fix: avoid MAPDL commands execution when gRPC connection fails. (#3686)

* fix: avoid MAPDL commands execution when gRPC connection fails.

* chore: adding changelog file 3686.fixed.md [dependabot-skip]

* fix: test

* fix: test

* ci: avoid saving when exiting

* fix: adding missing arguments

* test: marking `test_extract` test as flaky. See #2435

* test: improving tests

* fix: making sure we generate the RST file

* test: fix

* fix: test

* fix: (again) test

---------

Co-authored-by: pyansys-ci-bot <92810346+pyansys-ci-bot@users.noreply.github.com>

doc/changelog.d/3686.fixed.md

@@ -0,0 +1 @@
+fix: avoid MAPDL commands execution when gRPC connection fails.

src/ansys/mapdl/core/errors.py

@@ -361,6 +361,11 @@ def wrapper(*args, **kwargs):
                             f"$ export PYMAPDL_MAX_MESSAGE_LENGTH={lim_}"
                         )
 
+                # Every try to reconnecto to MAPDL failed
+                # So let's avoid execution from now on.
+                # The above exception should not break the channel.
+                mapdl._exited = True
+
                 if error.code() == grpc.StatusCode.UNAVAILABLE:
                     # Very likely the MAPDL server has died.
                     suggestion = (

tests/common.py

@@ -269,6 +269,8 @@ def is_exited(mapdl: Mapdl):
             mapdl = Mapdl(port=port, ip=ip)
 
         except MapdlConnectionError as err:
+            from conftest import DEBUG_TESTING, ON_LOCAL
+
             # Registering error.
             LOG.info(str(err))
 
@@ -285,7 +287,12 @@ def is_exited(mapdl: Mapdl):
                 override=True,
                 run_location=mapdl._path,
                 cleanup_on_exit=mapdl._cleanup,
-                log_apdl=log_apdl(),
+                license_server_check=False,
+                start_timeout=50,
+                loglevel="DEBUG" if DEBUG_TESTING else "ERROR",
+                # If the following file names are changed, update `ci.yml`.
+                log_apdl="pymapdl.apdl" if DEBUG_TESTING else None,
+                mapdl_output="apdl.out" if (DEBUG_TESTING and ON_LOCAL) else None,
             )
 
         LOG.info("Successfully re-connected to MAPDL")

tests/conftest.py

@@ -620,7 +620,9 @@ def mapdl(request, tmpdir_factory):
         mapdl._local = True
         mapdl._exited = False
         assert mapdl.finish_job_on_exit
-        mapdl.exit(save=True, force=True)
+
+        mapdl.exit(save=False, force=True)
+
         assert mapdl._exited
         assert "MAPDL exited" in str(mapdl)
 

tests/test_grpc.py

@@ -654,7 +654,8 @@ def _raise_error_code(*args, **kwargs):
         # passing mapdl to simulate the function `_raise_error_code` to be a method.
         mapdl.prep7(mapdl)
 
-    assert mapdl.is_alive
+    assert not mapdl.is_alive
+    mapdl._exited = False
 
 
 def test_generic_grpc_exception_exited(monkeypatch, grpc_channel):

tests/test_mapdl.py

@@ -1542,9 +1542,20 @@ def test_file_command_remote(mapdl, cube_solve, tmpdir):
 
     mapdl.post1()
     # this file should exist remotely
-    rst_file_name = "file.rst"
-    assert rst_file_name in mapdl.list_files()
+    rst_file_name = mapdl.result_file
+    if not rst_file_name in mapdl.list_files():
+        mapdl.solution()
+        mapdl.solve()
 
+        mapdl.finish()
+        mapdl.save()
+
+    rst_file_name = os.path.basename(rst_file_name)
+    assert (
+        rst_file_name in mapdl.list_files()
+    ), f"File {os.path.basename(rst_file_name)} is not in {mapdl.list_files()}"
+
+    mapdl.post1()
     mapdl.file(rst_file_name)  # checking we can read it.
 
     with pytest.raises(FileNotFoundError):

tests/test_parameters.py

@@ -410,7 +410,7 @@ def test_3d_array(mapdl, cleared):
 def test_parameter_with_spaces(mapdl, cleared):
     string_ = "DEV:F10X, front weights     "
     mapdl.run(f"*SET,SIMULATION,'{string_}'")
-    mapdl.parsav()
+    mapdl.parsav("all", fname="file", ext="parm")
     mapdl.clear()
     mapdl.parres("NEW", fname="file", ext="parm")
     assert mapdl.starstatus()

tests/test_xpl.py

@@ -184,6 +184,7 @@ def test_goto(xpl):
 
     @requires("ansys-math-core")
     @pytest.mark.usefixtures("check_supports_extract")
+    @pytest.mark.xfail(reason="Flaky test. See #2435")
     def test_extract(self, xpl):
         # expecting fixture to already have a non-result file open
         assert xpl._filename[-3:] != "rst"