X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/f8bca4fbcb739daa6a89dd52c219713dd1173287..aff43fb1a3b193f853ddd74a490cdff529d0af67:/nominatim/api/v1/server_glue.py diff --git a/nominatim/api/v1/server_glue.py b/nominatim/api/v1/server_glue.py index a87b6825..24f2234b 100644 --- a/nominatim/api/v1/server_glue.py +++ b/nominatim/api/v1/server_glue.py @@ -8,27 +8,35 @@ 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]: @@ -51,7 +59,7 @@ class ASGIAdaptor(abc.ABC): @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 @@ -62,6 +70,11 @@ class ASGIAdaptor(abc.ABC): 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: @@ -69,19 +82,19 @@ class ASGIAdaptor(abc.ABC): """ - 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: @@ -89,16 +102,16 @@ class ASGIAdaptor(abc.ABC): 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""" {status} {msg} """ - 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) @@ -181,7 +194,7 @@ class ASGIAdaptor(abc.ABC): """ 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 @@ -192,7 +205,7 @@ class ASGIAdaptor(abc.ABC): """ 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 @@ -222,10 +235,38 @@ class ASGIAdaptor(abc.ABC): 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) -> Dict[str, Any]: + """ Create details strucutre from the supplied geometry parameters. + """ + numgeoms = 0 + output = napi.GeometryFormat.NONE + if self.get_bool('polygon_geojson', False): + output |= napi.GeometryFormat.GEOJSON + numgeoms += 1 + if fmt not in ('geojson', 'geocodejson'): + if self.get_bool('polygon_text', False): + output |= napi.GeometryFormat.TEXT + numgeoms += 1 + if self.get_bool('polygon_kml', False): + output |= napi.GeometryFormat.KML + numgeoms += 1 + if self.get_bool('polygon_svg', False): + output |= napi.GeometryFormat.SVG + numgeoms += 1 + + if numgeoms > self.config().get_int('POLYGON_OUTPUT_MAX_TYPES'): + self.raise_error('Too many polygon output options selected.') + + 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: """ Server glue for /status endpoint. See API docs for details. """ @@ -258,17 +299,17 @@ async def details_endpoint(api: napi.NominatimAPIAsync, params: ASGIAdaptor) -> 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.lookup(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 + ) if debug: return params.build_response(loglib.get_and_disable()) @@ -276,12 +317,14 @@ async def details_endpoint(api: napi.NominatimAPIAsync, params: ASGIAdaptor) -> if result is None: params.raise_error('No place with that OSM ID found.', status=404) + result.localize(locales) + output = formatting.format_result(result, fmt, {'locales': locales, '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: @@ -290,72 +333,245 @@ async def reverse_endpoint(api: napi.NominatimAPIAsync, params: ASGIAdaptor) -> 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()) - zoom = max(0, min(18, params.get_int('zoom', 18))) - - details = napi.LookupDetails(address_details=True, - geometry_simplification=params.get_float('polygon_threshold', 0.0)) - numgeoms = 0 - if params.get_bool('polygon_geojson', False): - details.geometry_output |= napi.GeometryFormat.GEOJSON - numgeoms += 1 - if fmt not in ('geojson', 'geocodejson'): - if params.get_bool('polygon_text', False): - details.geometry_output |= napi.GeometryFormat.TEXT - numgeoms += 1 - if params.get_bool('polygon_kml', False): - details.geometry_output |= napi.GeometryFormat.KML - numgeoms += 1 - if params.get_bool('polygon_svg', False): - details.geometry_output |= napi.GeometryFormat.SVG - numgeoms += 1 - - if numgeoms > params.config().get_int('POLYGON_OUTPUT_MAX_TYPES'): - params.raise_error('Too many polgyon output options selected.') + details = params.parse_geometry_details(fmt) + details['max_rank'] = helpers.zoom_to_rank(params.get_int('zoom', 18)) + details['layers'] = params.get_layers() - 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) - fmt_options = {'locales': locales, + 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 = {'query': query, 'extratags': params.get_bool('extratags', False), 'namedetails': params.get_bool('namedetails', False), 'addressdetails': params.get_bool('addressdetails', True)} - if fmt == 'xml': - fmt_options['xml_roottag'] = 'reversegeocode' - fmt_options['xml_extra_info'] = {'querystring': 'TODO'} + + if result: + result.localize(napi.Locales.from_accept_languages(params.get_accepted_languages())) 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) -EndpointFunc = Callable[[napi.NominatimAPIAsync, ASGIAdaptor], Any] +async def lookup_endpoint(api: napi.NominatimAPIAsync, params: ASGIAdaptor) -> Any: + """ Server glue for /lookup endpoint. See API docs for details. + """ + fmt = params.parse_format(napi.SearchResults, 'xml') + debug = params.setup_debugging() + details = params.parse_geometry_details(fmt) + + 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:]))) + + 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) + else: + results = napi.SearchResults() + + if debug: + return params.build_response(loglib.get_and_disable(), num_results=len(results)) + + fmt_options = {'extratags': params.get_bool('extratags', False), + 'namedetails': params.get_bool('namedetails', False), + 'addressdetails': params.get_bool('addressdetails', True)} + + results.localize(napi.Locales.from_accept_languages(params.get_accepted_languages())) + + output = formatting.format_result(results, fmt, fmt_options) -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 - ] + return params.build_response(output, num_results=len(results)) +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() + + # 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)) + + results.localize(napi.Locales.from_accept_languages(params.get_accepted_languages())) + + 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 + thier 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) + ('reverse', reverse_endpoint), + ('lookup', lookup_endpoint), + ('search', search_endpoint), + ('deletable', deletable_endpoint), + ('polygons', polygons_endpoint), ]