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A GENETIC server with external (import) providers and EOSdash disabled loads several large packages at start that it never uses, which costs a noticeable part of the memory on 512 MB boards: - matplotlib via the GENETIC/GENETIC0 PDF report modules (server/eos.py) - statsmodels via the Holt-Winters fallback in prediction/priceabc.py - pvlib via the weather base class and the pvlib-based providers - bs4/lxml via the ClearOutside provider - scipy via the self-consumption interpolator singletons, which were loaded at import time - the GENETIC0 optimizer, imported by core/ems.py - tzfpy, whose polygon data the computed general.timezone loads Import these where they are used. The interpolator tables are loaded on first use (thread-safe). Nothing changes in what is computed. general.timezone is computed from latitude/longitude and cannot be set. Add general.timezone_override (IANA name, validated with pendulum): when set, general.timezone returns it and the lookup is skipped. When unset (default) the lookup is unchanged. Tests that patched the moved names now patch them at their source. A new test starts the server module in a subprocess and checks that none of these modules is loaded. Co-authored-by: Christin <christin@BigBrother.bikini.bottom.zone> Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
112 lines
3.6 KiB
Python
112 lines
3.6 KiB
Python
"""Heavy optional dependencies must not be imported by a plain server start.
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A GENETIC server with external (import) providers and EOSdash disabled should not
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load the PDF report stack, the price fallback forecast, pvlib-based providers,
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the HTML scraper, the GENETIC0 optimizer or the timezone polygon lookup. Each of
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these costs several to tens of MB of resident memory on small devices.
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"""
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import json
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import os
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import subprocess
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import sys
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from pathlib import Path
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import pytest
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from akkudoktoreos.config.config import GeneralSettings
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LAZY_MODULES = [
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"matplotlib",
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"statsmodels",
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"pvlib",
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"bs4",
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"lxml",
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"scipy",
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"tzfpy",
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"akkudoktoreos.optimization.genetic0.genetic0",
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"akkudoktoreos.optimization.genetic0.genetic0visualize",
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"akkudoktoreos.optimization.genetic.geneticvisualize",
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]
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PROBE = """
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import json
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import sys
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import akkudoktoreos.server.eos # noqa: F401
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from akkudoktoreos.core.coreabc import get_config, get_prediction, singletons_init
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config = get_config(init=True)
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singletons_init()
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get_prediction()
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assert config.general.timezone == "Europe/Berlin", config.general.timezone
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loaded = sorted(name for name in {modules} if name in sys.modules)
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print("LOADED_MODULES=" + json.dumps(loaded))
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"""
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def _loaded_modules(tmp_path: Path, extra_env: dict[str, str]) -> list[str]:
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env = {key: value for key, value in os.environ.items() if not key.startswith("EOS_")}
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env.update(
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{
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"EOS_DIR": str(tmp_path),
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"EOS_CONFIG_DIR": str(tmp_path),
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"EOS_GENERAL__DATA_FOLDER_PATH": str(tmp_path / "data"),
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"EOS_SERVER__STARTUP_EOSDASH": "false",
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"EOS_OPTIMIZATION__ALGORITHM": "GENETIC",
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"EOS_LOGGING__CONSOLE_LEVEL": "ERROR",
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}
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)
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env.update(extra_env)
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result = subprocess.run( # noqa: S603
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[sys.executable, "-c", PROBE.format(modules=LAZY_MODULES)],
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cwd=tmp_path,
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env=env,
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capture_output=True,
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text=True,
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timeout=120,
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check=False,
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)
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assert result.returncode == 0, result.stderr[-4000:]
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marker = "LOADED_MODULES="
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lines = [line for line in result.stdout.splitlines() if line.startswith(marker)]
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assert len(lines) == 1, result.stdout[-4000:]
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return json.loads(lines[0][len(marker) :])
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def test_server_start_does_not_import_heavy_optional_modules(tmp_path: Path):
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loaded = _loaded_modules(tmp_path, {"EOS_GENERAL__TIMEZONE_OVERRIDE": "Europe/Berlin"})
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assert loaded == []
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def test_timezone_lookup_still_used_without_override(tmp_path: Path):
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# Default latitude/longitude are in Berlin, so the lookup gives the same name.
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loaded = _loaded_modules(tmp_path, {})
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assert loaded == ["tzfpy"]
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def test_timezone_override_semantics():
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general = GeneralSettings()
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assert general.timezone_override is None
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assert general.timezone == "Europe/Berlin"
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general = GeneralSettings(latitude=40.7128, longitude=-74.0060)
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assert general.timezone == "America/New_York"
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general = GeneralSettings(
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latitude=40.7128, longitude=-74.0060, timezone_override="Europe/Berlin"
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)
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assert general.timezone == "Europe/Berlin"
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# Without coordinates the override still applies.
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general = GeneralSettings(latitude=None, longitude=None, timezone_override="Asia/Tokyo")
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assert general.timezone == "Asia/Tokyo"
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assert GeneralSettings(latitude=None, longitude=None).timezone is None
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assert GeneralSettings(timezone_override="Etc/UTC").timezone == "UTC"
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def test_timezone_override_rejects_unknown_names():
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with pytest.raises(ValueError):
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GeneralSettings(timezone_override="Mars/Olympus_Mons")
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