X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/300921a93e29d6bdc2a7da8ceaebfcce0c555c84..105597be056bf9cbf3bb4c15f9bc516479e48ee2:/nominatim/api/v1/server_glue.py diff --git a/nominatim/api/v1/server_glue.py b/nominatim/api/v1/server_glue.py index 3c0c58b0..5e8dbf4f 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, TypeVar +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_TYPE = { - 'text': 'text/plain; charset=utf-8', - 'xml': 'text/xml; charset=utf-8', - 'debug': 'text/html; charset=utf-8' -} +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' -ConvT = TypeVar('ConvT', int, float) +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) @@ -107,10 +120,9 @@ class ASGIAdaptor(abc.ABC): raise self.error(msg, status) - def _get_typed(self, name: str, dest_type: Type[ConvT], type_name: str, - default: Optional[ConvT] = None) -> ConvT: - """ Return an input parameter as the type 'dest_type'. Raises an - exception if the parameter is given but not in the given format. + def get_int(self, name: str, default: Optional[int] = None) -> int: + """ Return an input parameter as an int. Raises an exception if + the parameter is given but not in an integer format. If 'default' is given, then it will be returned when the parameter is missing completely. When 'default' is None, an error will be @@ -125,33 +137,38 @@ class ASGIAdaptor(abc.ABC): self.raise_error(f"Parameter '{name}' missing.") try: - intval = dest_type(value) + intval = int(value) except ValueError: - self.raise_error(f"Parameter '{name}' must be a {type_name}.") + self.raise_error(f"Parameter '{name}' must be a number.") return intval - def get_int(self, name: str, default: Optional[int] = None) -> int: - """ Return an input parameter as an int. Raises an exception if - the parameter is given but not in an integer format. + def get_float(self, name: str, default: Optional[float] = None) -> float: + """ Return an input parameter as a flaoting-point number. Raises an + exception if the parameter is given but not in an float format. If 'default' is given, then it will be returned when the parameter is missing completely. When 'default' is None, an error will be raised on a missing parameter. """ - return self._get_typed(name, int, 'number', default) + value = self.get(name) + if value is None: + if default is not None: + return default - def get_float(self, name: str, default: Optional[float] = None) -> int: - """ Return an input parameter as a flaoting-point number. Raises an - exception if the parameter is given but not in an float format. + self.raise_error(f"Parameter '{name}' missing.") - If 'default' is given, then it will be returned when the parameter - is missing completely. When 'default' is None, an error will be - raised on a missing parameter. - """ - return self._get_typed(name, float, 'number', default) + try: + fval = float(value) + except ValueError: + self.raise_error(f"Parameter '{name}' must be a number.") + + if math.isnan(fval) or math.isinf(fval): + self.raise_error(f"Parameter '{name}' must be a number.") + + return fval def get_bool(self, name: str, default: Optional[bool] = None) -> bool: @@ -177,7 +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 @@ -188,21 +205,22 @@ 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 - def get_layers(self) -> napi.DataLayer: + def get_layers(self) -> Optional[napi.DataLayer]: """ Return a parsed version of the layer parameter. """ param = self.get('layer', None) if param is None: return None - return reduce(napi.DataLayer.__or__, - (getattr(napi.DataLayer, s.upper()) for s in param.split(','))) + return cast(napi.DataLayer, + reduce(napi.DataLayer.__or__, + (getattr(napi.DataLayer, s.upper()) for s in param.split(',')))) def parse_format(self, result_type: Type[Any], default: str) -> str: @@ -217,10 +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. """ @@ -253,17 +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()) @@ -271,12 +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: @@ -285,77 +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))) - - # Negation makes sure that NaN is handled. Don't change. - if not abs(coord[0]) <= 180 or not abs(coord[1]) <= 90: - params.raise_error('Invalid coordinates.') - - 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(f'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), - 'single_result': True} - if fmt == 'xml': - fmt_options['xml_roottag'] = 'reversegeocode' - fmt_options['xml_extra_info'] = {'querystring': 'TODO'} + 'addressdetails': params.get_bool('addressdetails', True)} + + 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].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) + 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) + + return params.build_response(output, num_results=len(results)) -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() + + # 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), ]