Generic part of the server implementation of the v1 API.
Combine with the scaffolding provided for the various Python ASGI frameworks.
"""
-from typing import Optional, Any, Type, Callable, NoReturn, cast
+from typing import Optional, Any, Type, Callable, NoReturn, Dict, cast
from functools import reduce
import abc
+import dataclasses
import math
+from urllib.parse import urlencode
+import sqlalchemy as sa
+
+from nominatim.errors import UsageError
from nominatim.config import Configuration
import nominatim.api as napi
import nominatim.api.logging as loglib
from nominatim.api.v1.format import dispatch as formatting
+from nominatim.api.v1.format import RawDataList
+from nominatim.api.v1 import helpers
+
+CONTENT_TEXT = 'text/plain; charset=utf-8'
+CONTENT_XML = 'text/xml; charset=utf-8'
+CONTENT_HTML = 'text/html; charset=utf-8'
+CONTENT_JSON = 'application/json; charset=utf-8'
-CONTENT_TYPE = {
- 'text': 'text/plain; charset=utf-8',
- 'xml': 'text/xml; charset=utf-8',
- 'debug': 'text/html; charset=utf-8'
-}
+CONTENT_TYPE = {'text': CONTENT_TEXT, 'xml': CONTENT_XML, 'debug': CONTENT_HTML}
class ASGIAdaptor(abc.ABC):
""" Adapter class for the different ASGI frameworks.
Wraps functionality over concrete requests and responses.
"""
- content_type: str = 'text/plain; charset=utf-8'
+ content_type: str = CONTENT_TEXT
@abc.abstractmethod
def get(self, name: str, default: Optional[str] = None) -> Optional[str]:
@abc.abstractmethod
- def create_response(self, status: int, output: str) -> Any:
+ def create_response(self, status: int, output: str, num_results: int) -> Any:
""" Create a response from the given parameters. The result will
be returned by the endpoint functions. The adaptor may also
return None when the response is created internally with some
body of the response to 'output'.
"""
+ @abc.abstractmethod
+ def base_uri(self) -> str:
+ """ Return the URI of the original request.
+ """
+
@abc.abstractmethod
def config(self) -> Configuration:
"""
- def build_response(self, output: str, status: int = 200) -> Any:
+ def build_response(self, output: str, status: int = 200, num_results: int = 0) -> Any:
""" Create a response from the given output. Wraps a JSONP function
around the response, if necessary.
"""
- if self.content_type == 'application/json' and status == 200:
+ if self.content_type == CONTENT_JSON and status == 200:
jsonp = self.get('json_callback')
if jsonp is not None:
if any(not part.isidentifier() for part in jsonp.split('.')):
self.raise_error('Invalid json_callback value')
output = f"{jsonp}({output})"
- self.content_type = 'application/javascript'
+ self.content_type = 'application/javascript; charset=utf-8'
- return self.create_response(status, output)
+ return self.create_response(status, output, num_results)
def raise_error(self, msg: str, status: int = 400) -> NoReturn:
message. The message will be formatted according to the
output format chosen by the request.
"""
- if self.content_type == 'text/xml; charset=utf-8':
+ if self.content_type == CONTENT_XML:
msg = f"""<?xml version="1.0" encoding="UTF-8" ?>
<error>
<code>{status}</code>
<message>{msg}</message>
</error>
"""
- elif self.content_type == 'application/json':
+ elif self.content_type == CONTENT_JSON:
msg = f"""{{"error":{{"code":{status},"message":"{msg}"}}}}"""
- elif self.content_type == 'text/html; charset=utf-8':
+ elif self.content_type == CONTENT_HTML:
loglib.log().section('Execution error')
loglib.log().var_dump('Status', status)
loglib.log().var_dump('Message', msg)
""" Return the accepted languages.
"""
return self.get('accept-language')\
- or self.get_header('http_accept_language')\
+ or self.get_header('accept-language')\
or self.config().DEFAULT_LANGUAGE
"""
if self.get_bool('debug', False):
loglib.set_log_output('html')
- self.content_type = 'text/html; charset=utf-8'
+ self.content_type = CONTENT_HTML
return True
return False
self.raise_error("Parameter 'format' must be one of: " +
', '.join(formatting.list_formats(result_type)))
- self.content_type = CONTENT_TYPE.get(fmt, 'application/json')
+ self.content_type = CONTENT_TYPE.get(fmt, CONTENT_JSON)
return fmt
- def parse_geometry_details(self, fmt: str) -> napi.LookupDetails:
- """ Create details strucutre from the supplied geometry parameters.
+ def parse_geometry_details(self, fmt: str) -> Dict[str, Any]:
+ """ Create details structure from the supplied geometry parameters.
"""
- details = napi.LookupDetails(address_details=True,
- geometry_simplification=
- self.get_float('polygon_threshold', 0.0))
numgeoms = 0
+ output = napi.GeometryFormat.NONE
if self.get_bool('polygon_geojson', False):
- details.geometry_output |= napi.GeometryFormat.GEOJSON
+ output |= napi.GeometryFormat.GEOJSON
numgeoms += 1
if fmt not in ('geojson', 'geocodejson'):
if self.get_bool('polygon_text', False):
- details.geometry_output |= napi.GeometryFormat.TEXT
+ output |= napi.GeometryFormat.TEXT
numgeoms += 1
if self.get_bool('polygon_kml', False):
- details.geometry_output |= napi.GeometryFormat.KML
+ output |= napi.GeometryFormat.KML
numgeoms += 1
if self.get_bool('polygon_svg', False):
- details.geometry_output |= napi.GeometryFormat.SVG
+ output |= napi.GeometryFormat.SVG
numgeoms += 1
if numgeoms > self.config().get_int('POLYGON_OUTPUT_MAX_TYPES'):
- self.raise_error('Too many polgyon output options selected.')
+ self.raise_error('Too many polygon output options selected.')
- return details
+ return {'address_details': True,
+ 'geometry_simplification': self.get_float('polygon_threshold', 0.0),
+ 'geometry_output': output
+ }
async def status_endpoint(api: napi.NominatimAPIAsync, params: ASGIAdaptor) -> Any:
debug = params.setup_debugging()
- details = napi.LookupDetails(address_details=params.get_bool('addressdetails', False),
- linked_places=params.get_bool('linkedplaces', False),
- parented_places=params.get_bool('hierarchy', False),
- keywords=params.get_bool('keywords', False))
-
- if params.get_bool('polygon_geojson', False):
- details.geometry_output = napi.GeometryFormat.GEOJSON
-
locales = napi.Locales.from_accept_languages(params.get_accepted_languages())
- result = await api.details(place, details)
+ result = await api.details(place,
+ address_details=params.get_bool('addressdetails', False),
+ linked_places=params.get_bool('linkedplaces', True),
+ parented_places=params.get_bool('hierarchy', False),
+ keywords=params.get_bool('keywords', False),
+ geometry_output = napi.GeometryFormat.GEOJSON
+ if params.get_bool('polygon_geojson', False)
+ else napi.GeometryFormat.NONE,
+ locales=locales
+ )
if debug:
return params.build_response(loglib.get_and_disable())
'group_hierarchy': params.get_bool('group_hierarchy', False),
'icon_base_url': params.config().MAPICON_URL})
- return params.build_response(output)
+ return params.build_response(output, num_results=1)
async def reverse_endpoint(api: napi.NominatimAPIAsync, params: ASGIAdaptor) -> Any:
fmt = params.parse_format(napi.ReverseResults, 'xml')
debug = params.setup_debugging()
coord = napi.Point(params.get_float('lon'), params.get_float('lat'))
- locales = napi.Locales.from_accept_languages(params.get_accepted_languages())
- details = params.parse_geometry_details(fmt)
-
- zoom = max(0, min(18, params.get_int('zoom', 18)))
+ details = params.parse_geometry_details(fmt)
+ details['max_rank'] = helpers.zoom_to_rank(params.get_int('zoom', 18))
+ details['layers'] = params.get_layers()
+ details['locales'] = napi.Locales.from_accept_languages(params.get_accepted_languages())
- result = await api.reverse(coord, REVERSE_MAX_RANKS[zoom],
- params.get_layers() or
- napi.DataLayer.ADDRESS | napi.DataLayer.POI,
- details)
+ result = await api.reverse(coord, **details)
if debug:
- return params.build_response(loglib.get_and_disable())
+ return params.build_response(loglib.get_and_disable(), num_results=1 if result else 0)
+
+ if fmt == 'xml':
+ queryparts = {'lat': str(coord.lat), 'lon': str(coord.lon), 'format': 'xml'}
+ zoom = params.get('zoom', None)
+ if zoom:
+ queryparts['zoom'] = zoom
+ query = urlencode(queryparts)
+ else:
+ query = ''
- fmt_options = {'locales': locales,
+ fmt_options = {'query': query,
'extratags': params.get_bool('extratags', False),
'namedetails': params.get_bool('namedetails', False),
'addressdetails': params.get_bool('addressdetails', True)}
output = formatting.format_result(napi.ReverseResults([result] if result else []),
fmt, fmt_options)
- return params.build_response(output)
+ return params.build_response(output, num_results=1 if result else 0)
async def lookup_endpoint(api: napi.NominatimAPIAsync, params: ASGIAdaptor) -> Any:
"""
fmt = params.parse_format(napi.SearchResults, 'xml')
debug = params.setup_debugging()
- locales = napi.Locales.from_accept_languages(params.get_accepted_languages())
details = params.parse_geometry_details(fmt)
+ details['locales'] = napi.Locales.from_accept_languages(params.get_accepted_languages())
places = []
for oid in (params.get('osm_ids') or '').split(','):
oid = oid.strip()
if len(oid) > 1 and oid[0] in 'RNWrnw' and oid[1:].isdigit():
- places.append(napi.OsmID(oid[0], int(oid[1:])))
+ places.append(napi.OsmID(oid[0].upper(), int(oid[1:])))
+
+ if len(places) > params.config().get_int('LOOKUP_MAX_COUNT'):
+ params.raise_error('Too many object IDs.')
if places:
- results = await api.lookup(places, details)
+ results = await api.lookup(places, **details)
else:
results = napi.SearchResults()
if debug:
- return params.build_response(loglib.get_and_disable())
+ return params.build_response(loglib.get_and_disable(), num_results=len(results))
- fmt_options = {'locales': locales,
- 'extratags': params.get_bool('extratags', False),
+ fmt_options = {'extratags': params.get_bool('extratags', False),
'namedetails': params.get_bool('namedetails', False),
'addressdetails': params.get_bool('addressdetails', True)}
output = formatting.format_result(results, fmt, fmt_options)
- return params.build_response(output)
+ return params.build_response(output, num_results=len(results))
-EndpointFunc = Callable[[napi.NominatimAPIAsync, ASGIAdaptor], Any]
-REVERSE_MAX_RANKS = [2, 2, 2, # 0-2 Continent/Sea
- 4, 4, # 3-4 Country
- 8, # 5 State
- 10, 10, # 6-7 Region
- 12, 12, # 8-9 County
- 16, 17, # 10-11 City
- 18, # 12 Town
- 19, # 13 Village/Suburb
- 22, # 14 Hamlet/Neighbourhood
- 25, # 15 Localities
- 26, # 16 Major Streets
- 27, # 17 Minor Streets
- 30 # 18 Building
- ]
+async def _unstructured_search(query: str, api: napi.NominatimAPIAsync,
+ details: Dict[str, Any]) -> napi.SearchResults:
+ if not query:
+ return napi.SearchResults()
+
+ # Extract special format for coordinates from query.
+ query, x, y = helpers.extract_coords_from_query(query)
+ if x is not None:
+ assert y is not None
+ details['near'] = napi.Point(x, y)
+ details['near_radius'] = 0.1
+
+ # If no query is left, revert to reverse search.
+ if x is not None and not query:
+ result = await api.reverse(details['near'], **details)
+ if not result:
+ return napi.SearchResults()
+
+ return napi.SearchResults(
+ [napi.SearchResult(**{f.name: getattr(result, f.name)
+ for f in dataclasses.fields(napi.SearchResult)
+ if hasattr(result, f.name)})])
+
+ query, cls, typ = helpers.extract_category_from_query(query)
+ if cls is not None:
+ assert typ is not None
+ return await api.search_category([(cls, typ)], near_query=query, **details)
+
+ return await api.search(query, **details)
+
+
+async def search_endpoint(api: napi.NominatimAPIAsync, params: ASGIAdaptor) -> Any:
+ """ Server glue for /search endpoint. See API docs for details.
+ """
+ fmt = params.parse_format(napi.SearchResults, 'jsonv2')
+ debug = params.setup_debugging()
+ details = params.parse_geometry_details(fmt)
+
+ details['countries'] = params.get('countrycodes', None)
+ details['excluded'] = params.get('exclude_place_ids', None)
+ details['viewbox'] = params.get('viewbox', None) or params.get('viewboxlbrt', None)
+ details['bounded_viewbox'] = params.get_bool('bounded', False)
+ details['dedupe'] = params.get_bool('dedupe', True)
+ max_results = max(1, min(50, params.get_int('limit', 10)))
+ details['max_results'] = max_results + min(10, max_results) \
+ if details['dedupe'] else max_results
+
+ details['min_rank'], details['max_rank'] = \
+ helpers.feature_type_to_rank(params.get('featureType', ''))
+ if params.get('featureType', None) is not None:
+ details['layers'] = napi.DataLayer.ADDRESS
+ else:
+ details['layers'] = params.get_layers()
+
+ details['locales'] = napi.Locales.from_accept_languages(params.get_accepted_languages())
+
+ # unstructured query parameters
+ query = params.get('q', None)
+ # structured query parameters
+ queryparts = {}
+ for key in ('amenity', 'street', 'city', 'county', 'state', 'postalcode', 'country'):
+ details[key] = params.get(key, None)
+ if details[key]:
+ queryparts[key] = details[key]
+
+ try:
+ if query is not None:
+ if queryparts:
+ params.raise_error("Structured query parameters"
+ "(amenity, street, city, county, state, postalcode, country)"
+ " cannot be used together with 'q' parameter.")
+ queryparts['q'] = query
+ results = await _unstructured_search(query, api, details)
+ else:
+ query = ', '.join(queryparts.values())
+
+ results = await api.search_address(**details)
+ except UsageError as err:
+ params.raise_error(str(err))
+
+ if details['dedupe'] and len(results) > 1:
+ results = helpers.deduplicate_results(results, max_results)
+
+ if debug:
+ return params.build_response(loglib.get_and_disable(), num_results=len(results))
+
+ if fmt == 'xml':
+ helpers.extend_query_parts(queryparts, details,
+ params.get('featureType', ''),
+ params.get_bool('namedetails', False),
+ params.get_bool('extratags', False),
+ (str(r.place_id) for r in results if r.place_id))
+ queryparts['format'] = fmt
+
+ moreurl = params.base_uri() + '/search?' + urlencode(queryparts)
+ else:
+ moreurl = ''
+
+ fmt_options = {'query': query, 'more_url': moreurl,
+ 'exclude_place_ids': queryparts.get('exclude_place_ids'),
+ 'viewbox': queryparts.get('viewbox'),
+ 'extratags': params.get_bool('extratags', False),
+ 'namedetails': params.get_bool('namedetails', False),
+ 'addressdetails': params.get_bool('addressdetails', False)}
+
+ output = formatting.format_result(results, fmt, fmt_options)
+
+ return params.build_response(output, num_results=len(results))
+
+
+async def deletable_endpoint(api: napi.NominatimAPIAsync, params: ASGIAdaptor) -> Any:
+ """ Server glue for /deletable endpoint.
+ This is a special endpoint that shows polygons that have been
+ deleted or are broken in the OSM data but are kept in the
+ Nominatim database to minimize disruption.
+ """
+ fmt = params.parse_format(RawDataList, 'json')
+
+ async with api.begin() as conn:
+ sql = sa.text(""" SELECT p.place_id, country_code,
+ name->'name' as name, i.*
+ FROM placex p, import_polygon_delete i
+ WHERE p.osm_id = i.osm_id AND p.osm_type = i.osm_type
+ AND p.class = i.class AND p.type = i.type
+ """)
+ results = RawDataList(r._asdict() for r in await conn.execute(sql))
+
+ return params.build_response(formatting.format_result(results, fmt, {}))
+
+
+async def polygons_endpoint(api: napi.NominatimAPIAsync, params: ASGIAdaptor) -> Any:
+ """ Server glue for /polygons endpoint.
+ This is a special endpoint that shows polygons that have changed
+ their size but are kept in the Nominatim database with their
+ old area to minimize disruption.
+ """
+ fmt = params.parse_format(RawDataList, 'json')
+ sql_params: Dict[str, Any] = {
+ 'days': params.get_int('days', -1),
+ 'cls': params.get('class')
+ }
+ reduced = params.get_bool('reduced', False)
+
+ async with api.begin() as conn:
+ sql = sa.select(sa.text("""osm_type, osm_id, class, type,
+ name->'name' as name,
+ country_code, errormessage, updated"""))\
+ .select_from(sa.text('import_polygon_error'))
+ if sql_params['days'] > 0:
+ sql = sql.where(sa.text("updated > 'now'::timestamp - make_interval(days => :days)"))
+ if reduced:
+ sql = sql.where(sa.text("errormessage like 'Area reduced%'"))
+ if sql_params['cls'] is not None:
+ sql = sql.where(sa.text("class = :cls"))
+
+ sql = sql.order_by(sa.literal_column('updated').desc()).limit(1000)
+
+ results = RawDataList(r._asdict() for r in await conn.execute(sql, sql_params))
+
+ return params.build_response(formatting.format_result(results, fmt, {}))
+
+
+EndpointFunc = Callable[[napi.NominatimAPIAsync, ASGIAdaptor], Any]
ROUTES = [
('status', status_endpoint),
('details', details_endpoint),
('reverse', reverse_endpoint),
- ('lookup', lookup_endpoint)
+ ('lookup', lookup_endpoint),
+ ('search', search_endpoint),
+ ('deletable', deletable_endpoint),
+ ('polygons', polygons_endpoint),
]
projects / nominatim.git / blobdiff