]> git.openstreetmap.org Git - nominatim.git/blobdiff - nominatim/api/v1/server_glue.py
Merge remote-tracking branch 'upstream/master'
[nominatim.git] / nominatim / api / v1 / server_glue.py
index b5a4a3cacf636cb3f47a21eded4843f7bc03d722..80bf38a4517b9ea8eee53604a71a088d1ef42ed4 100644 (file)
@@ -8,15 +8,22 @@
 Generic part of the server implementation of the v1 API.
 Combine with the scaffolding provided for the various Python ASGI frameworks.
 """
 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
 from functools import reduce
 import abc
+import dataclasses
 import math
 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.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',
 
 CONTENT_TYPE = {
   'text': 'text/plain; charset=utf-8',
@@ -51,7 +58,7 @@ class ASGIAdaptor(abc.ABC):
 
 
     @abc.abstractmethod
 
 
     @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
         """ 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 +69,11 @@ class ASGIAdaptor(abc.ABC):
             body of the response to 'output'.
         """
 
             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:
 
     @abc.abstractmethod
     def config(self) -> Configuration:
@@ -69,7 +81,7 @@ 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.
         """
         """ Create a response from the given output. Wraps a JSONP function
             around the response, if necessary.
         """
@@ -81,7 +93,7 @@ class ASGIAdaptor(abc.ABC):
                 output = f"{jsonp}({output})"
                 self.content_type = 'application/javascript'
 
                 output = f"{jsonp}({output})"
                 self.content_type = 'application/javascript'
 
-        return self.create_response(status, output)
+        return self.create_response(status, output, num_results)
 
 
     def raise_error(self, msg: str, status: int = 400) -> NoReturn:
 
 
     def raise_error(self, msg: str, status: int = 400) -> NoReturn:
@@ -181,7 +193,7 @@ class ASGIAdaptor(abc.ABC):
         """ Return the accepted languages.
         """
         return self.get('accept-language')\
         """ 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
 
 
                or self.config().DEFAULT_LANGUAGE
 
 
@@ -226,6 +238,34 @@ class ASGIAdaptor(abc.ABC):
         return fmt
 
 
         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.
     """
 async def status_endpoint(api: napi.NominatimAPIAsync, params: ASGIAdaptor) -> Any:
     """ Server glue for /status endpoint. See API docs for details.
     """
@@ -258,17 +298,17 @@ async def details_endpoint(api: napi.NominatimAPIAsync, params: ASGIAdaptor) ->
 
     debug = params.setup_debugging()
 
 
     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())
 
     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', False),
+                               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())
 
     if debug:
         return params.build_response(loglib.get_and_disable())
@@ -276,12 +316,14 @@ 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)
 
     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})
 
     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:
 
 
 async def reverse_endpoint(api: napi.NominatimAPIAsync, params: ASGIAdaptor) -> Any:
@@ -290,73 +332,243 @@ 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'))
     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:
 
     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),
                    '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)
 
 
     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
+
+    # 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),
 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),
 ]
 ]