moviewyrm/bookwyrm/connectors/connector_manager.py
2021-01-31 11:11:26 -08:00

96 lines
3.1 KiB
Python

''' interface with whatever connectors the app has '''
import importlib
from urllib.parse import urlparse
from requests import HTTPError
from bookwyrm import models
from bookwyrm.tasks import app
class ConnectorException(HTTPError):
''' when the connector can't do what was asked '''
def search(query, min_confidence=0.1):
''' find books based on arbitary keywords '''
results = []
dedup_slug = lambda r: '%s/%s/%s' % (r.title, r.author, r.year)
result_index = set()
for connector in get_connectors():
try:
result_set = connector.search(query, min_confidence=min_confidence)
except (HTTPError, ConnectorException):
continue
result_set = [r for r in result_set \
if dedup_slug(r) not in result_index]
# `|=` concats two sets. WE ARE GETTING FANCY HERE
result_index |= set(dedup_slug(r) for r in result_set)
results.append({
'connector': connector,
'results': result_set,
})
return results
def local_search(query, min_confidence=0.1, raw=False):
''' only look at local search results '''
connector = load_connector(models.Connector.objects.get(local=True))
return connector.search(query, min_confidence=min_confidence, raw=raw)
def first_search_result(query, min_confidence=0.1):
''' search until you find a result that fits '''
for connector in get_connectors():
result = connector.search(query, min_confidence=min_confidence)
if result:
return result[0]
return None
def get_connectors():
''' load all connectors '''
for info in models.Connector.objects.order_by('priority').all():
yield load_connector(info)
def get_or_create_connector(remote_id):
''' get the connector related to the author's server '''
url = urlparse(remote_id)
identifier = url.netloc
if not identifier:
raise ValueError('Invalid remote id')
try:
connector_info = models.Connector.objects.get(identifier=identifier)
except models.Connector.DoesNotExist:
connector_info = models.Connector.objects.create(
identifier=identifier,
connector_file='bookwyrm_connector',
base_url='https://%s' % identifier,
books_url='https://%s/book' % identifier,
covers_url='https://%s/images/covers' % identifier,
search_url='https://%s/search?q=' % identifier,
priority=2
)
return load_connector(connector_info)
@app.task
def load_more_data(connector_id, book_id):
''' background the work of getting all 10,000 editions of LoTR '''
connector_info = models.Connector.objects.get(id=connector_id)
connector = load_connector(connector_info)
book = models.Book.objects.select_subclasses().get(id=book_id)
connector.expand_book_data(book)
def load_connector(connector_info):
''' instantiate the connector class '''
connector = importlib.import_module(
'bookwyrm.connectors.%s' % connector_info.connector_file
)
return connector.Connector(connector_info.identifier)