fix(config): enable documentation mode only explicitly

ConfigEOS.documentation_mode() was true as soon as Sphinx was imported
anywhere in the process. A test importing Sphinx therefore switched all
later tests into documentation mode, and test_config_md_current failed
depending on test order. Documentation mode is now enabled only by the
documentation generators (_force_documentation_mode) or by the Sphinx
configuration, which sets sys._called_from_sphinx in docs/conf.py.

Declare _force_documentation_mode as a ClassVar. Without the annotation
pydantic turned it into a private attribute, and the class attribute was
a truthy descriptor object.

Behavior change: because of that descriptor, every running EOS was in
documentation mode, so the get_adapter/config/measurement/prediction/ems/
database/resource_registry() guards never raised "access before init" and
created the singletons lazily on first access. They now raise for every
access before initialization. The worker process of uvicorn's auto-reload
(server.reload, make run-dev) relied on that: the app's lifespan now sets up
the configuration and initializes the singletons that do not exist yet.

Leave runtime state out of the documentation: the Home Assistant entity ID
properties and OptimizationCommonSettings.keys return an empty list in
documentation mode, so entity IDs and solution keys of a running system
no longer reach the generated configuration docs.

Keep the tests isolated: test_doc sets documentation mode on the class
and test_docstringrst restores sys._called_from_sphinx after reading the
Sphinx configuration. Add tests for how documentation mode is enabled and
for the runtime values it leaves out.

Additional changes
- Generate openapi.json in documentation mode, as the config docs.
- Share the documentation mode check as coreabc.documentation_mode().
- Move the logging and server address setup of run_eos() to setup_eos_config().
- Test that EOS starts with server.reload.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/conf.py

@@ -12,6 +12,10 @@ PROJECT_ROOT = Path(__file__).parent.parent
 SRC_DIR = PROJECT_ROOT / "src"
 sys.path.insert(0, str(SRC_DIR))
 
+# Tell akkudoktoreos that it is imported for the documentation build
+# (see ConfigEOS.documentation_mode()).
+sys._called_from_sphinx = True  # type: ignore[attr-defined]
+
 from akkudoktoreos.core.version import __version__
 
 # -- Project information -----------------------------------------------------

scripts/generate_openapi.py

@@ -25,11 +25,17 @@ PROJECT_ROOT = Path(__file__).parent.parent
 SRC_DIR = PROJECT_ROOT / "src"
 sys.path.insert(0, str(SRC_DIR))
 
+from akkudoktoreos.config.config import ConfigEOS
 from akkudoktoreos.core.coreabc import get_config
 from akkudoktoreos.server.eos import app
 
 
 def generate_openapi() -> dict:
+    # Documentation mode: leave runtime state (e.g. optimization solution keys,
+    # Home Assistant entity IDs) out of the specification.
+    force_documentation_mode = ConfigEOS._force_documentation_mode
+    ConfigEOS._force_documentation_mode = True
+    try:
         # Make minimal config to make the generation reproducable
         config_eos = get_config(init={
                 "with_init_settings": True,
@@ -40,6 +46,8 @@ def generate_openapi() -> dict:
             })
 
         openapi_spec = app.openapi()
+    finally:
+        ConfigEOS._force_documentation_mode = force_documentation_mode
 
     config_schema = (
         openapi_spec

src/akkudoktoreos/adapter/homeassistant.py

@@ -10,7 +10,7 @@ from pydantic import Field, PrivateAttr, computed_field, field_validator
 
 from akkudoktoreos.adapter.adapterabc import AdapterProvider
 from akkudoktoreos.config.configabc import SettingsBaseModel
-from akkudoktoreos.core.coreabc import get_adapter
+from akkudoktoreos.core.coreabc import documentation_mode, get_adapter
 from akkudoktoreos.core.emplan import (
     DDBCInstruction,
     FRBCInstruction,
@@ -147,6 +147,9 @@ class HomeAssistantAdapterCommonSettings(SettingsBaseModel):
     @property
     def homeassistant_entity_ids(self) -> list[str]:
         """Entity IDs available at Home Assistant."""
+        if documentation_mode():
+            # Documentation shows no runtime state.
+            return []
         try:
             adapter_eos = get_adapter()
             provider = adapter_eos.provider_by_id("HomeAssistant")
@@ -164,6 +167,9 @@ class HomeAssistantAdapterCommonSettings(SettingsBaseModel):
     @property
     def eos_solution_entity_ids(self) -> list[str]:
         """Entity IDs for optimization solution available at EOS."""
+        if documentation_mode():
+            # Documentation shows no runtime state.
+            return []
         try:
             adapter_eos = get_adapter()
             provider = adapter_eos.provider_by_id("HomeAssistant")
@@ -181,6 +187,9 @@ class HomeAssistantAdapterCommonSettings(SettingsBaseModel):
     @property
     def eos_device_instruction_entity_ids(self) -> list[str]:
         """Entity IDs for energy management instructions available at EOS."""
+        if documentation_mode():
+            # Documentation shows no runtime state.
+            return []
         try:
             adapter_eos = get_adapter()
             provider = adapter_eos.provider_by_id("HomeAssistant")

src/akkudoktoreos/config/config.py

@@ -466,7 +466,9 @@ class ConfigEOS(SingletonMixin, SettingsEOSDefaults):
     _config_autosave: ClassVar[str] = ""
     # Settings provided at runtime, e.g. by the REST interface. Highest priority after CLI.
     _runtime_settings: ClassVar[dict[str, Any]] = {}
-    _force_documentation_mode = False
+    # A ClassVar: without the annotation pydantic makes it a private attribute,
+    # and the class attribute would be a (truthy) descriptor object.
+    _force_documentation_mode: ClassVar[bool] = False
 
     def __hash__(self) -> int:
         # ConfigEOS is a singleton
@@ -767,11 +769,16 @@ class ConfigEOS(SingletonMixin, SettingsEOSDefaults):
     def documentation_mode(cls) -> bool:
         """Are we running in documentation mode.
 
-        Some checks may be relaxed to allow for proper documentation execution.
+        Some checks may be relaxed to allow for proper documentation execution,
+        and runtime state is left out of the documentation.
+
+        Documentation mode is set explicitly: by the documentation generators
+        (``_force_documentation_mode``) or by the Sphinx configuration
+        (``sys._called_from_sphinx``). Merely having Sphinx imported, e.g. by a
+        test in the same process, does not enable it.
         """
-        # Detect if Sphinx is importing this module
-        is_sphinx = "sphinx" in sys.modules or getattr(sys, "_called_from_sphinx", False)
-        return cls._force_documentation_mode or is_sphinx
+        is_sphinx = getattr(sys, "_called_from_sphinx", False)
+        return bool(cls._force_documentation_mode or is_sphinx)
 
     def __init__(self, *args: Any, **kwargs: Any) -> None:
         """Initializes the singleton ConfigEOS instance.

src/akkudoktoreos/core/coreabc.py

@@ -106,6 +106,31 @@ class AdapterMixin:
         return get_adapter()
 
 
+def documentation_mode() -> bool:
+    """Return whether EOS runs in documentation mode.
+
+    Shortcut for ``ConfigEOS.documentation_mode()`` for modules that cannot
+    import ``ConfigEOS`` at module level. Documentation shows no runtime state,
+    e.g. entity IDs of a Home Assistant instance or keys of an optimization
+    solution.
+
+    Returns:
+        True if the documentation is being generated.
+    """
+    from akkudoktoreos.config.config import ConfigEOS
+
+    return ConfigEOS.documentation_mode()
+
+
+def config_initialized() -> bool:
+    """Return whether the configuration singleton exists, without creating it.
+
+    Returns:
+        True if ``get_config(init=...)`` already created the configuration.
+    """
+    return _config_eos is not None
+
+
 def get_config(init: Union[bool, dict[str, bool]] = False) -> ConfigEOS:
     """Retrieve the singleton EOS configuration instance.
 

src/akkudoktoreos/optimization/optimization.py

@@ -4,7 +4,7 @@ from typing import Any, Optional
 from pydantic import Field, computed_field, model_validator
 
 from akkudoktoreos.config.configabc import SettingsBaseModel
-from akkudoktoreos.core.coreabc import get_ems
+from akkudoktoreos.core.coreabc import documentation_mode, get_ems
 from akkudoktoreos.core.pydantic import (
     PydanticBaseModel,
     PydanticDateTimeDataFrame,
@@ -92,6 +92,9 @@ class OptimizationCommonSettings(SettingsBaseModel):
     @property
     def keys(self) -> list[str]:
         """The keys of the solution."""
+        if documentation_mode():
+            # Documentation shows no runtime state, e.g. of a previous run.
+            return []
         try:
             ems_eos = get_ems()
         except Exception:

src/akkudoktoreos/server/eos.py

@@ -29,6 +29,7 @@ from loguru import logger
 from akkudoktoreos.config.config import ConfigEOS, SettingsEOS
 from akkudoktoreos.core.cache import CacheFileStore, cache_clear, cache_load, cache_save
 from akkudoktoreos.core.coreabc import (
+    config_initialized,
     get_config,
     get_ems,
     get_measurement,
@@ -189,6 +190,13 @@ def config_eos_ready() -> bool:
 async def lifespan(app: FastAPI) -> AsyncGenerator[None, None]:
     """Lifespan manager for the app."""
     # On startup
+    if not config_initialized():
+        # The worker process of uvicorn's auto-reload (server.reload) imports the
+        # app afresh; run_eos() did not run in this process.
+        setup_eos_config(get_config(init=True))
+    # Create the singletons that do not exist yet; a no-op after run_eos().
+    singletons_init()
+
     await load_eos_state()
 
     # Prepare the Manager and all task that are handled by the manager
@@ -2498,19 +2506,18 @@ def redirect(request: Request, path: str) -> Union[HTMLResponse, RedirectRespons
     return RedirectResponse(url="/docs", status_code=303)
 
 
-def run_eos() -> None:
-    """Run the EOS server with the specified configurations.
+def setup_eos_config(config_eos: ConfigEOS) -> None:
+    """Set up logging and the server address defaults from the configuration.
 
-    Starts the EOS server using the Uvicorn ASGI server. Logs an error and exits if
-    binding to the host and port fails.
+    Called once per process that serves the app: by ``run_eos()``, and by the
+    app's lifespan in the worker process of uvicorn's auto-reload.
 
-    Returns:
-        None
+    Args:
+        config_eos: The EOS configuration of this process.
+
+    Raises:
+        RuntimeError: If no server port is set after applying the defaults.
     """
-    # get_config(init=True) creates the configuration, includes also ARGV args.
-    # This should not be done before nor later
-    config_eos = get_config(init=True)
-
     # Set logging to what is in config
     logger.remove()
     logging_track_config(config_eos, "logging", None, None)
@@ -2532,6 +2539,23 @@ def run_eos() -> None:
     if config_eos.server.eosdash_port is None:
         config_eos.set_nested_value("server/eosdash_port", config_eos.server.port + 1)
 
+
+def run_eos() -> None:
+    """Run the EOS server with the specified configurations.
+
+    Starts the EOS server using the Uvicorn ASGI server. Logs an error and exits if
+    binding to the host and port fails.
+
+    Returns:
+        None
+    """
+    # get_config(init=True) creates the configuration, includes also ARGV args.
+    # This should not be done before nor later
+    config_eos = get_config(init=True)
+    setup_eos_config(config_eos)
+    if config_eos.server.port is None:  # make mypy happy
+        raise RuntimeError("server.port is None despite default setup")
+
     # Switch data directories ownership to user
     fix_data_directories_permissions(run_as_user=config_eos.server.run_as_user)
 

tests/test_config.py

@@ -885,3 +885,42 @@ class TestConfigProviderValidation:
 
         for section, value in providers.items():
             assert getattr(config, section).provider == value["provider"]
+
+
+class TestDocumentationMode:
+    """Documentation mode is enabled explicitly, never by an imported Sphinx."""
+
+    def test_imported_sphinx_does_not_enable_it(self, monkeypatch):
+        import sphinx  # noqa: F401  # the module is in sys.modules now
+
+        monkeypatch.delattr("sys._called_from_sphinx", raising=False)
+        monkeypatch.setattr(ConfigEOS, "_force_documentation_mode", False)
+        assert not ConfigEOS.documentation_mode()
+
+    def test_sphinx_configuration_enables_it(self, monkeypatch):
+        monkeypatch.setattr("sys._called_from_sphinx", True, raising=False)
+        monkeypatch.setattr(ConfigEOS, "_force_documentation_mode", False)
+        assert ConfigEOS.documentation_mode()
+
+    def test_documentation_generators_enable_it(self, monkeypatch):
+        monkeypatch.delattr("sys._called_from_sphinx", raising=False)
+        monkeypatch.setattr(ConfigEOS, "_force_documentation_mode", True)
+        assert ConfigEOS.documentation_mode()
+
+    def test_optimization_solution_keys_are_left_out(self, monkeypatch):
+        """Keys of a solution of a previous run do not reach the documentation."""
+        from akkudoktoreos.optimization import optimization
+        from akkudoktoreos.optimization.optimization import OptimizationCommonSettings
+
+        solution = Mock()
+        solution.solution.to_dataframe.return_value.columns.tolist.return_value = ["b", "a"]
+        ems = Mock()
+        ems.optimization_solution.return_value = solution
+        monkeypatch.setattr(optimization, "get_ems", lambda: ems)
+        monkeypatch.delattr("sys._called_from_sphinx", raising=False)
+        settings = OptimizationCommonSettings()
+
+        monkeypatch.setattr(ConfigEOS, "_force_documentation_mode", False)
+        assert settings.keys == ["a", "b"]
+        monkeypatch.setattr(ConfigEOS, "_force_documentation_mode", True)
+        assert settings.keys == []

tests/test_doc.py

@@ -9,6 +9,8 @@ from unittest.mock import patch
 
 import pytest
 
+from akkudoktoreos.config.config import ConfigEOS
+
 DIR_PROJECT_ROOT = Path(__file__).parent.parent
 DIR_TESTDATA = Path(__file__).parent / "testdata"
 
@@ -205,10 +207,10 @@ def test_config_md_current(config_eos, set_other_timezone):
 
         # Create test files
         try:
-            config_eos._force_documentation_mode = True
+            ConfigEOS._force_documentation_mode = True
             config_md = generate_config_md.generate_config_md(tested[0], config_eos)
         finally:
-            config_eos._force_documentation_mode = False
+            ConfigEOS._force_documentation_mode = False
 
     # Check test files are the same as the expected files
     for i, expected_path in enumerate(expected):

tests/test_docstringrst.py

@@ -142,7 +142,18 @@ sphinx_conf = importlib.util.module_from_spec(spec)
 sys.modules["sphinx_conf"] = sphinx_conf
 if spec.loader is None:
     raise AssertionError(f"Can not import sphinx_conf from {conf_path}")
+# conf.py marks the process as a Sphinx build, which enables documentation mode
+# of akkudoktoreos. Only its settings are read here: keep the other tests of this
+# process out of documentation mode.
+_called_from_sphinx = getattr(sys, "_called_from_sphinx", None)
+try:
     spec.loader.exec_module(sphinx_conf)
+finally:
+    if _called_from_sphinx is None:
+        if hasattr(sys, "_called_from_sphinx"):
+            del sys._called_from_sphinx
+    else:
+        sys._called_from_sphinx = _called_from_sphinx  # type: ignore[attr-defined]
 
 # Build NapoleonConfig with all options
 napoleon_config = NapoleonConfig(

tests/test_server.py

@@ -2,6 +2,9 @@ import asyncio
 import json
 import os
 import re
+import socket
+import subprocess
+import sys
 import time
 from http import HTTPStatus
 from pathlib import Path
@@ -395,6 +398,114 @@ class TestServerWithEnv:
         )
 
 
+class TestServerReload:
+    """EOS with uvicorn's auto-reload (``server.reload``, used by ``make run-dev``)."""
+
+    STARTUP_TIMEOUT_S = 90
+
+    @staticmethod
+    def free_port() -> int:
+        """Return a free TCP port on the default host that EOS accepts (1024..49151).
+
+        Starts above the ports of the other server tests (8503, 8504, 8555).
+        """
+        for port in range(8513, 8600):
+            with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
+                try:
+                    sock.bind((get_default_host(), port))
+                except OSError:
+                    continue
+                return port
+        pytest.fail("No free port for the EOS reload test in 8513..8599")
+
+    @staticmethod
+    def stop_process_tree(process: subprocess.Popen) -> None:
+        """Stop a process and all of its descendants (reloader, worker)."""
+        try:
+            parent = psutil.Process(process.pid)
+            processes = [*parent.children(recursive=True), parent]
+        except psutil.NoSuchProcess:
+            return
+        for proc in processes:
+            try:
+                proc.terminate()
+            except psutil.NoSuchProcess:
+                pass
+        _, alive = psutil.wait_procs(processes, timeout=15)
+        for proc in alive:
+            try:
+                proc.kill()
+            except psutil.NoSuchProcess:
+                pass
+        process.wait(timeout=15)
+
+    def test_server_starts_with_reload(self, tmp_path: Path) -> None:
+        """The reload worker initializes the singletons that run_eos() set up in the parent.
+
+        The worker process imports the app afresh. Without initialization in the
+        app's lifespan, the startup fails with 'access before init'.
+        """
+        eos_dir = tmp_path / "eos"
+        eos_dir.mkdir()
+        # An empty config file, so EOS does not fall back to the user's config file.
+        (eos_dir / "EOS.config.json").write_text("{}", encoding="utf-8")
+        host = get_default_host()
+        port = self.free_port()
+        env = os.environ.copy()
+        env.update(
+            {
+                "EOS_DIR": str(eos_dir),
+                "EOS_CONFIG_DIR": str(eos_dir),
+                "PYTHONIOENCODING": "utf-8",
+            }
+        )
+        log_path = tmp_path / "eos.log"
+        with log_path.open("w", encoding="utf-8") as log_file:
+            # cwd: the reloader watches the working directory, not the repository.
+            process = subprocess.Popen(
+                [
+                    sys.executable,
+                    "-m",
+                    "akkudoktoreos.server.eos",
+                    "--host",
+                    host,
+                    "--port",
+                    str(port),
+                    "--reload",
+                    "true",
+                    "--startup_eosdash",
+                    "false",
+                ],
+                cwd=tmp_path,
+                env=env,
+                stdout=log_file,
+                stderr=subprocess.STDOUT,
+            )
+            try:
+                health: dict = {}
+                deadline = time.monotonic() + self.STARTUP_TIMEOUT_S
+                while time.monotonic() < deadline and process.poll() is None:
+                    try:
+                        response = requests.get(f"http://{host}:{port}/v1/health", timeout=2)
+                        if response.status_code == HTTPStatus.OK:
+                            health = response.json()
+                            break
+                    except requests.RequestException:
+                        pass
+                    time.sleep(1)
+                worker_pids = {
+                    child.pid for child in psutil.Process(process.pid).children(recursive=True)
+                } if process.poll() is None else set()
+            finally:
+                self.stop_process_tree(process)
+
+        log = log_path.read_text(encoding="utf-8", errors="replace")
+        assert health.get("status") == "alive", f"EOS with --reload did not start:\n{log}"
+        assert "before init" not in log, log
+        # The app runs in the reload worker, a child of the started process.
+        assert health.get("pid") in worker_pids
+
+
 class TestEosdashRedirect:
     """Redirects to EOSdash must target an address the client can reach.
 

tests/test_typingmodels.py

@@ -117,6 +117,27 @@ def test_homeassistant_settings_preserve_entity_lookup_and_unavailability(
     assert getattr(settings, property_name) == []
 
 
+@pytest.mark.parametrize(
+    "property_name",
+    ["homeassistant_entity_ids", "eos_solution_entity_ids", "eos_device_instruction_entity_ids"],
+)
+def test_homeassistant_settings_leave_runtime_entities_out_of_documentation(
+    monkeypatch: pytest.MonkeyPatch, property_name: str
+) -> None:
+    """Entity IDs of a running system do not reach the documentation."""
+    provider = HomeAssistantAdapter()
+    lookup = MagicMock(return_value=["sensor.eos_example"])
+    monkeypatch.setattr(HomeAssistantAdapter, f"get_{property_name}", lookup)
+    adapter = MagicMock()
+    adapter.provider_by_id.return_value = provider
+    monkeypatch.setattr(homeassistant, "get_adapter", lambda: adapter)
+    monkeypatch.setattr(ConfigEOS, "_force_documentation_mode", True)
+
+    settings = HomeAssistantAdapterCommonSettings()
+    assert getattr(settings, property_name) == []
+    lookup.assert_not_called()
+
+
 @pytest.mark.parametrize("operation", ["revert_settings", "list_backups"])
 def test_backup_operations_report_an_uninitialized_path_as_an_invariant_failure(
     config_eos: ConfigEOS, monkeypatch: pytest.MonkeyPatch, operation: str