109 lines
3.3 KiB
Python
109 lines
3.3 KiB
Python
from typing import List, Union
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from pathlib import Path
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from importlib import import_module
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from django.db.models import QuerySet
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from archivebox.index.schema import Link
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from archivebox.util import enforce_types
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from archivebox.config import stderr, OUTPUT_DIR, USE_INDEXING_BACKEND, USE_SEARCHING_BACKEND, SEARCH_BACKEND_ENGINE
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from .utils import get_indexable_content, log_index_started
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def indexing_enabled():
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return USE_INDEXING_BACKEND
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def search_backend_enabled():
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return USE_SEARCHING_BACKEND
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def get_backend():
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return f'search.backends.{SEARCH_BACKEND_ENGINE}'
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def import_backend():
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backend_string = get_backend()
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try:
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backend = import_module(backend_string)
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except Exception as err:
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raise Exception("Could not load '%s' as a backend: %s" % (backend_string, err))
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return backend
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@enforce_types
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def write_search_index(link: Link, texts: Union[List[str], None]=None, out_dir: Path=OUTPUT_DIR, skip_text_index: bool=False) -> None:
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if not indexing_enabled():
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return
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if not skip_text_index and texts:
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from core.models import Snapshot
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snap = Snapshot.objects.filter(url=link.url).first()
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backend = import_backend()
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if snap:
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try:
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backend.index(snapshot_id=str(snap.id), texts=texts)
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except Exception as err:
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stderr()
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stderr(
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f'[X] The search backend threw an exception={err}:',
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color='red',
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)
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@enforce_types
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def query_search_index(query: str, out_dir: Path=OUTPUT_DIR) -> QuerySet:
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from core.models import Snapshot
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if search_backend_enabled():
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backend = import_backend()
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try:
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snapshot_ids = backend.search(query)
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except Exception as err:
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stderr()
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stderr(
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f'[X] The search backend threw an exception={err}:',
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color='red',
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)
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raise
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else:
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# TODO preserve ordering from backend
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qsearch = Snapshot.objects.filter(pk__in=snapshot_ids)
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return qsearch
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return Snapshot.objects.none()
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@enforce_types
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def flush_search_index(snapshots: QuerySet):
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if not indexing_enabled() or not snapshots:
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return
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backend = import_backend()
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snapshot_ids=(str(pk) for pk in snapshots.values_list('pk',flat=True))
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try:
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backend.flush(snapshot_ids)
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except Exception as err:
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stderr()
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stderr(
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f'[X] The search backend threw an exception={err}:',
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color='red',
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)
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@enforce_types
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def index_links(links: Union[List[Link],None], out_dir: Path=OUTPUT_DIR):
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if not links:
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return
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from core.models import Snapshot, ArchiveResult
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for link in links:
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snap = Snapshot.objects.filter(url=link.url).first()
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if snap:
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results = ArchiveResult.objects.indexable().filter(snapshot=snap)
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log_index_started(link.url)
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try:
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texts = get_indexable_content(results)
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except Exception as err:
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stderr()
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stderr(
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f'[X] An Exception ocurred reading the indexable content={err}:',
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color='red',
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)
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else:
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write_search_index(link, texts, out_dir=out_dir)
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