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75 lines
2.3 KiB
Python
75 lines
2.3 KiB
Python
"""hermes-lean-ctx — lean-ctx as Hermes' active context engine.
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Replaces the built-in ``ContextCompressor`` with deterministic, prompt-cache
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friendly compaction and injects lean-ctx's code-intelligence + cross-session
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memory tools natively into the agent.
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Activate via ``config.yaml``::
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context:
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engine: "lean-ctx"
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Engine logic lives in the lean-ctx daemon (Single Source of Truth); this plugin
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is a thin adapter over the ``/v1`` HTTP API via the ``leanctx`` SDK.
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"""
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from __future__ import annotations
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import logging
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import os
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__version__ = "0.1.0"
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logger = logging.getLogger(__name__)
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def _resolve_hermes_home() -> str:
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try:
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from hermes_cli.config import get_hermes_home # type: ignore
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return str(get_hermes_home())
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except Exception:
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return os.environ.get("HERMES_HOME", os.path.expanduser("~/.hermes"))
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def register(ctx) -> None:
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"""Plugin entry point — register the lean-ctx context engine.
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Native engine tools are exposed through the engine's ``get_tool_schemas`` /
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``handle_tool_call`` and dispatched automatically by Hermes, so no separate
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tool registration is required.
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"""
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from .config import LeanCtxConfig
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from .engine import LeanCtxEngine
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config = LeanCtxConfig.from_env()
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engine = LeanCtxEngine(config=config, hermes_home=_resolve_hermes_home())
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register_context_engine = getattr(ctx, "register_context_engine", None)
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if not callable(register_context_engine):
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logger.warning(
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"hermes-lean-ctx: host does not support register_context_engine(); "
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"is this a compatible Hermes Agent version?"
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)
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return
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register_context_engine(engine)
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logger.info(
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"hermes-lean-ctx loaded — lean-ctx context engine active (daemon: %s)",
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config.base_url,
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)
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# Exported for directory-discovery installs (plugins/context_engine/lean-ctx/)
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# and for tests/benchmarks that import the engine directly.
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def __getattr__(name: str):
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# Lazy export so simply importing the package metadata never requires the
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# Hermes ABC / leanctx SDK to be importable.
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if name == "LeanCtxEngine":
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from .engine import LeanCtxEngine
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return LeanCtxEngine
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raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
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__all__ = ["register", "LeanCtxEngine", "__version__"]
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