126 lines
5.1 KiB
Python
126 lines
5.1 KiB
Python
"""Central construction of deployment-specific adapters."""
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from tht.adapters.dwh import PostgresDwhAdapter, ThothRestDwhAdapter
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from tht.adapters.evidence import FilesystemEvidenceSource, HttpManifestEvidenceSource
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from tht.adapters.vector import PgVectorStore, ThothHttpVectorStore
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from tht.config import Config, ConfigError
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from tht.db.connection import make_engine
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from tht.ports.dwh import DwhAdapter
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from tht.ports.vector import VectorStore
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from tht.vectorstore.rest_client import VectorRestClient
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def build_dwh(cfg: Config) -> DwhAdapter:
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"""Build the DWH adapter selected by the validated workspace resource."""
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resource = cfg.dwh
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match resource.type:
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case "postgres_direct":
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return PostgresDwhAdapter(
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resource.connection,
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statement_timeout_ms=cfg.execution.statement_timeout_ms,
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)
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case "thoth_rest":
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return ThothRestDwhAdapter(resource.database, resource.endpoint)
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case other: # pragma: no cover - Pydantic's discriminator rejects this first.
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raise ConfigError(f"Adapter DWH non supportato: {other}")
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def build_vector_store(cfg: Config, *, require_write: bool = False) -> VectorStore:
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"""Build the vector adapter, optionally requiring an HTTP writer credential."""
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resource = cfg.vectors
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if resource is None:
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raise ConfigError("Risorsa vectors non configurata")
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match resource.type:
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case "pgvector_direct":
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reader = resource.reader or resource.connection
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if require_write and resource.writer is None:
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raise ConfigError("Vector writer non configurato per pgvector_direct")
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return PgVectorStore(
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reader,
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resource.writer,
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expected_dimension=cfg.embeddings.dim if cfg.embeddings is not None else None,
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)
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case "thoth_vector_http":
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if require_write and resource.writer is None:
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raise ConfigError("Vector writer non configurato")
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return ThothHttpVectorStore(
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VectorRestClient(resource.reader) if resource.reader is not None else None,
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VectorRestClient(resource.writer) if resource.writer is not None else None,
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expected_dimension=cfg.embeddings.dim if cfg.embeddings is not None else None,
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)
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case other: # pragma: no cover - Pydantic's discriminator rejects this first.
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raise ConfigError(f"Adapter vector non supportato: {other}")
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def build_vector_loader(cfg: Config, collection: str):
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"""Compatibility construction for legacy collection sync commands."""
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resource = cfg.vectors
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if resource is None:
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raise ConfigError("Risorsa vectors non configurata")
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if cfg.embeddings is None:
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raise ConfigError("Embeddings non configurati")
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if (
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resource.type == "thoth_vector_http"
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and resource.writer is not None
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and (cfg.profile == "workstation" or resource.direct is None)
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):
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from tht.vectorstore.rest_writer import RestVectorWriter
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return RestVectorWriter(VectorRestClient(resource.writer), table=collection)
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connection = (
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resource.writer or resource.connection
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if resource.type == "pgvector_direct"
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else resource.direct
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)
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if connection is None:
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raise ConfigError("Vector writer non configurato")
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from tht.vectorstore.store import VectorStore as TableVectorStore
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return TableVectorStore(
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make_engine(connection),
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schema=connection.db_schema,
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table=collection,
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dim=cfg.embeddings.dim,
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)
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def build_evidence_sources(cfg: Config):
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"""Build configured Evidence sources, including the legacy curated filesystem tree."""
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evidence = cfg.evidence
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if evidence is None:
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return []
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sources = []
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if evidence.source_root is not None:
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sources.append(FilesystemEvidenceSource(evidence.source_root / evidence.evidence_dir))
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for resource in evidence.sources:
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match resource.type:
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case "filesystem":
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sources.append(
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FilesystemEvidenceSource(
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resource.root,
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patterns=resource.patterns,
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max_bytes=resource.max_bytes,
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)
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)
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case "http":
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sources.append(
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HttpManifestEvidenceSource(
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[url.get_secret_value() for url in resource.urls],
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connect_timeout=resource.connect_timeout,
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read_timeout=resource.read_timeout,
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max_bytes=resource.max_bytes,
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max_redirects=resource.max_redirects,
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allow_private_hosts=resource.allow_private_hosts,
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max_cache_bytes=resource.max_cache_bytes,
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)
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)
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case other: # pragma: no cover - Pydantic rejects unsupported discriminators.
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raise ConfigError(f"Adapter evidence non supportato: {other}")
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return sources
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__all__ = ["build_dwh", "build_evidence_sources", "build_vector_loader", "build_vector_store"]
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