"""
Implementation of classes for API access via libraries.
"""
-from typing import Mapping, Optional, Any, AsyncIterator, Dict, Sequence
+from typing import Mapping, Optional, Any, AsyncIterator, Dict, Sequence, List, Tuple
import asyncio
+import sys
import contextlib
from pathlib import Path
import sqlalchemy as sa
import sqlalchemy.ext.asyncio as sa_asyncio
-
+from nominatim.errors import UsageError
from nominatim.db.sqlalchemy_schema import SearchTables
from nominatim.db.async_core_library import PGCORE_LIB, PGCORE_ERROR
from nominatim.config import Configuration
from nominatim.api.status import get_status, StatusResult
from nominatim.api.lookup import get_detailed_place, get_simple_place
from nominatim.api.reverse import ReverseGeocoder
+from nominatim.api.search import ForwardGeocoder, Phrase, PhraseType, make_query_analyzer
import nominatim.api.types as ntyp
from nominatim.api.results import DetailedResult, ReverseResult, SearchResults
""" API loader asynchornous version.
"""
def __init__(self, project_dir: Path,
- environ: Optional[Mapping[str, str]] = None) -> None:
+ environ: Optional[Mapping[str, str]] = None,
+ loop: Optional[asyncio.AbstractEventLoop] = None) -> None:
self.config = Configuration(project_dir, environ)
self.server_version = 0
- self._engine_lock = asyncio.Lock()
+ if sys.version_info >= (3, 10):
+ self._engine_lock = asyncio.Lock()
+ else:
+ self._engine_lock = asyncio.Lock(loop=loop) # pylint: disable=unexpected-keyword-arg
self._engine: Optional[sa_asyncio.AsyncEngine] = None
self._tables: Optional[SearchTables] = None
self._property_cache: Dict[str, Any] = {'DB:server_version': 0}
return
dsn = self.config.get_database_params()
+ pool_size = self.config.get_int('API_POOL_SIZE')
query = {k: v for k, v in dsn.items()
if k not in ('user', 'password', 'dbname', 'host', 'port')}
- if PGCORE_LIB == 'asyncpg':
- query['prepared_statement_cache_size'] = '0'
dburl = sa.engine.URL.create(
f'postgresql+{PGCORE_LIB}',
username=dsn.get('user'), password=dsn.get('password'),
host=dsn.get('host'), port=int(dsn['port']) if 'port' in dsn else None,
query=query)
- engine = sa_asyncio.create_async_engine(dburl, future=True)
+ engine = sa_asyncio.create_async_engine(dburl, future=True,
+ max_overflow=0, pool_size=pool_size,
+ echo=self.config.get_bool('DEBUG_SQL'))
try:
async with engine.begin() as conn:
Returns None if there is no entry under the given ID.
"""
+ details = ntyp.LookupDetails.from_kwargs(params)
async with self.begin() as conn:
- return await get_detailed_place(conn, place,
- ntyp.LookupDetails.from_kwargs(params))
+ if details.keywords:
+ await make_query_analyzer(conn)
+ return await get_detailed_place(conn, place, details)
async def lookup(self, places: Sequence[ntyp.PlaceRef], **params: Any) -> SearchResults:
"""
details = ntyp.LookupDetails.from_kwargs(params)
async with self.begin() as conn:
+ if details.keywords:
+ await make_query_analyzer(conn)
return SearchResults(filter(None,
[await get_simple_place(conn, p, details) for p in places]))
# There are no results to be expected outside valid coordinates.
return None
+ details = ntyp.ReverseDetails.from_kwargs(params)
async with self.begin() as conn:
- geocoder = ReverseGeocoder(conn, ntyp.ReverseDetails.from_kwargs(params))
+ if details.keywords:
+ await make_query_analyzer(conn)
+ geocoder = ReverseGeocoder(conn, details)
return await geocoder.lookup(coord)
+ async def search(self, query: str, **params: Any) -> SearchResults:
+ """ Find a place by free-text search. Also known as forward geocoding.
+ """
+ query = query.strip()
+ if not query:
+ raise UsageError('Nothing to search for.')
+
+ async with self.begin() as conn:
+ geocoder = ForwardGeocoder(conn, ntyp.SearchDetails.from_kwargs(params))
+ phrases = [Phrase(PhraseType.NONE, p.strip()) for p in query.split(',')]
+ return await geocoder.lookup(phrases)
+
+
+ # pylint: disable=too-many-arguments,too-many-branches
+ async def search_address(self, amenity: Optional[str] = None,
+ street: Optional[str] = None,
+ city: Optional[str] = None,
+ county: Optional[str] = None,
+ state: Optional[str] = None,
+ country: Optional[str] = None,
+ postalcode: Optional[str] = None,
+ **params: Any) -> SearchResults:
+ """ Find an address using structured search.
+ """
+ async with self.begin() as conn:
+ details = ntyp.SearchDetails.from_kwargs(params)
+
+ phrases: List[Phrase] = []
+
+ if amenity:
+ phrases.append(Phrase(PhraseType.AMENITY, amenity))
+ if street:
+ phrases.append(Phrase(PhraseType.STREET, street))
+ if city:
+ phrases.append(Phrase(PhraseType.CITY, city))
+ if county:
+ phrases.append(Phrase(PhraseType.COUNTY, county))
+ if state:
+ phrases.append(Phrase(PhraseType.STATE, state))
+ if postalcode:
+ phrases.append(Phrase(PhraseType.POSTCODE, postalcode))
+ if country:
+ phrases.append(Phrase(PhraseType.COUNTRY, country))
+
+ if not phrases:
+ raise UsageError('Nothing to search for.')
+
+ if amenity or street:
+ details.restrict_min_max_rank(26, 30)
+ elif city:
+ details.restrict_min_max_rank(13, 25)
+ elif county:
+ details.restrict_min_max_rank(10, 12)
+ elif state:
+ details.restrict_min_max_rank(5, 9)
+ elif postalcode:
+ details.restrict_min_max_rank(5, 11)
+ else:
+ details.restrict_min_max_rank(4, 4)
+
+ if 'layers' not in params:
+ details.layers = ntyp.DataLayer.ADDRESS
+ if amenity:
+ details.layers |= ntyp.DataLayer.POI
+
+ geocoder = ForwardGeocoder(conn, details)
+ return await geocoder.lookup(phrases)
+
+
+ async def search_category(self, categories: List[Tuple[str, str]],
+ near_query: Optional[str] = None,
+ **params: Any) -> SearchResults:
+ """ Find an object of a certain category near another place.
+ The near place may either be given as an unstructured search
+ query in itself or as coordinates.
+ """
+ if not categories:
+ return SearchResults()
+
+ details = ntyp.SearchDetails.from_kwargs(params)
+ async with self.begin() as conn:
+ if near_query:
+ phrases = [Phrase(PhraseType.NONE, p) for p in near_query.split(',')]
+ else:
+ phrases = []
+ if details.keywords:
+ await make_query_analyzer(conn)
+
+ geocoder = ForwardGeocoder(conn, details)
+ return await geocoder.lookup_pois(categories, phrases)
+
+
+
class NominatimAPI:
""" API loader, synchronous version.
"""
def __init__(self, project_dir: Path,
environ: Optional[Mapping[str, str]] = None) -> None:
self._loop = asyncio.new_event_loop()
- self._async_api = NominatimAPIAsync(project_dir, environ)
+ self._async_api = NominatimAPIAsync(project_dir, environ, loop=self._loop)
def close(self) -> None:
no place matches the given criteria.
"""
return self._loop.run_until_complete(self._async_api.reverse(coord, **params))
+
+
+ def search(self, query: str, **params: Any) -> SearchResults:
+ """ Find a place by free-text search. Also known as forward geocoding.
+ """
+ return self._loop.run_until_complete(
+ self._async_api.search(query, **params))
+
+
+ # pylint: disable=too-many-arguments
+ def search_address(self, amenity: Optional[str] = None,
+ street: Optional[str] = None,
+ city: Optional[str] = None,
+ county: Optional[str] = None,
+ state: Optional[str] = None,
+ country: Optional[str] = None,
+ postalcode: Optional[str] = None,
+ **params: Any) -> SearchResults:
+ """ Find an address using structured search.
+ """
+ return self._loop.run_until_complete(
+ self._async_api.search_address(amenity, street, city, county,
+ state, country, postalcode, **params))
+
+
+ def search_category(self, categories: List[Tuple[str, str]],
+ near_query: Optional[str] = None,
+ **params: Any) -> SearchResults:
+ """ Find an object of a certain category near another place.
+ The near place may either be given as an unstructured search
+ query in itself or as a geographic area through the
+ viewbox or near parameters.
+ """
+ return self._loop.run_until_complete(
+ self._async_api.search_category(categories, near_query, **params))
projects / nominatim.git / blobdiff