Parameterise the search only within countries

[nominatim.git] / nominatim / cli.py

diff --git a/nominatim/cli.py b/nominatim/cli.py
index e28ff29563f8edf9df2adef1a786f612520922a7..836f9037fd4b9b8916cf7d1563583d4d563e2f56 100644 (file)
--- a/nominatim/cli.py
+++ b/nominatim/cli.py
@@ -1,38 +1,35 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# This file is part of Nominatim. (https://nominatim.org)
+#
+# Copyright (C) 2022 by the Nominatim developer community.
+# For a full list of authors see the git log.

 """
 Command-line interface to the Nominatim functions for import, update,
 database administration and querying.
 """
 """
 Command-line interface to the Nominatim functions for import, update,
 database administration and querying.
 """

-import datetime as dt
+from typing import Optional, Any, List, Union
+import importlib
+import logging

 import os
 import os

-import socket

 import sys
 import sys

-import time

 import argparse
 import argparse

-import logging

 from pathlib import Path
 
 from pathlib import Path
 

-from .config import Configuration
-from .tools.exec_utils import run_legacy_script, run_api_script, run_php_server
-from .db.connection import connect
-from .db import status
-from .errors import UsageError
+from nominatim.config import Configuration
+from nominatim.tools.exec_utils import run_legacy_script, run_php_server
+from nominatim.errors import UsageError
+from nominatim import clicmd
+from nominatim import version
+from nominatim.clicmd.args import NominatimArgs, Subcommand

 
 LOG = logging.getLogger()
 
 
 LOG = logging.getLogger()
 

-def _num_system_cpus():
-    try:
-        cpus = len(os.sched_getaffinity(0))
-    except NotImplementedError:
-        cpus = None
-
-    return cpus or os.cpu_count()
-
-

 class CommandlineParser:
     """ Wraps some of the common functions for parsing the command line
         and setting up subcommands.
     """
 class CommandlineParser:
     """ Wraps some of the common functions for parsing the command line
         and setting up subcommands.
     """

-    def __init__(self, prog, description):
+    def __init__(self, prog: str, description: Optional[str]):

         self.parser = argparse.ArgumentParser(
             prog=prog,
             description=description,
         self.parser = argparse.ArgumentParser(
             prog=prog,
             description=description,


@@ -41,6 +38,10 @@ class CommandlineParser:
         self.subs = self.parser.add_subparsers(title='available commands',
                                                dest='subcommand')
 
         self.subs = self.parser.add_subparsers(title='available commands',
                                                dest='subcommand')
 

+        # Global arguments that only work if no sub-command given
+        self.parser.add_argument('--version', action='store_true',
+                                 help='Print Nominatim version and exit')
+

         # Arguments added to every sub-command
         self.default_args = argparse.ArgumentParser(add_help=False)
         group = self.default_args.add_argument_group('Default arguments')
         # Arguments added to every sub-command
         self.default_args = argparse.ArgumentParser(add_help=False)
         group = self.default_args.add_argument_group('Default arguments')


@@ -57,11 +58,22 @@ class CommandlineParser:
                            help='Number of parallel threads to use')
 
 
                            help='Number of parallel threads to use')
 
 

-    def add_subcommand(self, name, cmd):
+    def nominatim_version_text(self) -> str:
+        """ Program name and version number as string
+        """
+        text = f'Nominatim version {version.NOMINATIM_VERSION!s}'
+        if version.GIT_COMMIT_HASH is not None:
+            text += f' ({version.GIT_COMMIT_HASH})'
+        return text
+
+
+    def add_subcommand(self, name: str, cmd: Subcommand) -> None:

         """ Add a subcommand to the parser. The subcommand must be a class
             with a function add_args() that adds the parameters for the
             subcommand and a run() function that executes the command.
         """
         """ Add a subcommand to the parser. The subcommand must be a class
             with a function add_args() that adds the parameters for the
             subcommand and a run() function that executes the command.
         """

+        assert cmd.__doc__ is not None
+

         parser = self.subs.add_parser(name, parents=[self.default_args],
                                       help=cmd.__doc__.split('\n', 1)[0],
                                       description=cmd.__doc__,
         parser = self.subs.add_parser(name, parents=[self.default_args],
                                       help=cmd.__doc__.split('\n', 1)[0],
                                       description=cmd.__doc__,


@@ -70,26 +82,38 @@ class CommandlineParser:
         parser.set_defaults(command=cmd)
         cmd.add_args(parser)
 
         parser.set_defaults(command=cmd)
         cmd.add_args(parser)
 

-    def run(self, **kwargs):
+
+    def run(self, **kwargs: Any) -> int:

         """ Parse the command line arguments of the program and execute the
             appropriate subcommand.
         """
         """ Parse the command line arguments of the program and execute the
             appropriate subcommand.
         """

-        args = self.parser.parse_args(args=kwargs.get('cli_args'))
+        args = NominatimArgs()
+        try:
+            self.parser.parse_args(args=kwargs.get('cli_args'), namespace=args)
+        except SystemExit:
+            return 1
+
+        if args.version:
+            print(self.nominatim_version_text())
+            return 0

 
         if args.subcommand is None:
             self.parser.print_help()
             return 1
 
 
         if args.subcommand is None:
             self.parser.print_help()
             return 1
 

-        for arg in ('module_dir', 'osm2pgsql_path', 'phplib_dir', 'data_dir', 'phpcgi_path'):
-            setattr(args, arg, Path(kwargs[arg]))
+        args.phpcgi_path = Path(kwargs['phpcgi_path'])

         args.project_dir = Path(args.project_dir).resolve()
 
         args.project_dir = Path(args.project_dir).resolve()
 

-        logging.basicConfig(stream=sys.stderr,
-                            format='%(asctime)s: %(message)s',
-                            datefmt='%Y-%m-%d %H:%M:%S',
-                            level=max(4 - args.verbose, 1) * 10)
+        if 'cli_args' not in kwargs:
+            logging.basicConfig(stream=sys.stderr,
+                                format='%(asctime)s: %(message)s',
+                                datefmt='%Y-%m-%d %H:%M:%S',
+                                level=max(4 - args.verbose, 1) * 10)

 
 

-        args.config = Configuration(args.project_dir, args.data_dir / 'settings')
+        args.config = Configuration(args.project_dir,
+                                    environ=kwargs.get('environ', os.environ))
+        args.config.set_libdirs(module=kwargs['module_dir'],
+                                osm2pgsql=kwargs['osm2pgsql_path'])

 
         log = logging.getLogger()
         log.warning('Using project directory: %s', str(args.project_dir))
 
         log = logging.getLogger()
         log.warning('Using project directory: %s', str(args.project_dir))


@@ -105,17 +129,7 @@ class CommandlineParser:
         return 1
 
 
         return 1
 
 

-def _osm2pgsql_options_from_args(args, default_cache, default_threads):
-    """ Set up the stanadrd osm2pgsql from the command line arguments.
-    """
-    return dict(osm2pgsql=args.osm2pgsql_path,
-                osm2pgsql_cache=args.osm2pgsql_cache or default_cache,
-                osm2pgsql_style=args.config.get_import_style_file(),
-                threads=args.threads or default_threads,
-                dsn=args.config.get_libpq_dsn(),
-                flatnode_file=args.config.FLATNODE_FILE)
-
-##### Subcommand classes
+# Subcommand classes

 #
 # Each class needs to implement two functions: add_args() adds the CLI parameters
 # for the subfunction, run() executes the subcommand.
 #
 # Each class needs to implement two functions: add_args() adds the CLI parameters
 # for the subfunction, run() executes the subcommand.


@@ -126,471 +140,12 @@ def _osm2pgsql_options_from_args(args, default_cache, default_threads):
 #
 # No need to document the functions each time.
 # pylint: disable=C0111
 #
 # No need to document the functions each time.
 # pylint: disable=C0111

-# Using non-top-level imports to make pyosmium optional for replication only.
-# pylint: disable=E0012,C0415
-
-
-class SetupAll:
-    """\
-    Create a new Nominatim database from an OSM file.
-    """
-
-    @staticmethod
-    def add_args(parser):
-        group_name = parser.add_argument_group('Required arguments')
-        group = group_name.add_mutually_exclusive_group(required=True)
-        group.add_argument('--osm-file',
-                           help='OSM file to be imported.')
-        group.add_argument('--continue', dest='continue_at',
-                           choices=['load-data', 'indexing', 'db-postprocess'],
-                           help='Continue an import that was interrupted')
-        group = parser.add_argument_group('Optional arguments')
-        group.add_argument('--osm2pgsql-cache', metavar='SIZE', type=int,
-                           help='Size of cache to be used by osm2pgsql (in MB)')
-        group.add_argument('--reverse-only', action='store_true',
-                           help='Do not create tables and indexes for searching')
-        group.add_argument('--enable-debug-statements', action='store_true',
-                           help='Include debug warning statements in SQL code')
-        group.add_argument('--no-partitions', action='store_true',
-                           help="""Do not partition search indices
-                                   (speeds up import of single country extracts)""")
-        group.add_argument('--no-updates', action='store_true',
-                           help="""Do not keep tables that are only needed for
-                                   updating the database later""")
-        group = parser.add_argument_group('Expert options')
-        group.add_argument('--ignore-errors', action='store_true',
-                           help='Continue import even when errors in SQL are present')
-        group.add_argument('--index-noanalyse', action='store_true',
-                           help='Do not perform analyse operations during index')
-
-
-    @staticmethod
-    def run(args):
-        params = ['setup.php']
-        if args.osm_file:
-            params.extend(('--all', '--osm-file', args.osm_file))
-        else:
-            if args.continue_at == 'load-data':
-                params.append('--load-data')
-            if args.continue_at in ('load-data', 'indexing'):
-                params.append('--index')
-            params.extend(('--create-search-indices', '--create-country-names',
-                           '--setup-website'))
-        if args.osm2pgsql_cache:
-            params.extend(('--osm2pgsql-cache', args.osm2pgsql_cache))
-        if args.reverse_only:
-            params.append('--reverse-only')
-        if args.enable_debug_statements:
-            params.append('--enable-debug-statements')
-        if args.no_partitions:
-            params.append('--no-partitions')
-        if args.no_updates:
-            params.append('--drop')
-        if args.ignore_errors:
-            params.append('--ignore-errors')
-        if args.index_noanalyse:
-            params.append('--index-noanalyse')
-
-        return run_legacy_script(*params, nominatim_env=args)
-
-
-class SetupFreeze:
-    """\
-    Make database read-only.
-
-    About half of data in the Nominatim database is kept only to be able to
-    keep the data up-to-date with new changes made in OpenStreetMap. This
-    command drops all this data and only keeps the part needed for geocoding
-    itself.
-
-    This command has the same effect as the `--no-updates` option for imports.
-    """
-
-    @staticmethod
-    def add_args(parser):
-        pass # No options
-
-    @staticmethod
-    def run(args):
-        return run_legacy_script('setup.php', '--drop', nominatim_env=args)
-
-
-class SetupSpecialPhrases:
-    """\
-    Maintain special phrases.
-    """
-
-    @staticmethod
-    def add_args(parser):
-        group = parser.add_argument_group('Input arguments')
-        group.add_argument('--from-wiki', action='store_true',
-                           help='Pull special phrases from the OSM wiki.')
-        group = parser.add_argument_group('Output arguments')
-        group.add_argument('-o', '--output', default='-',
-                           help="""File to write the preprocessed phrases to.
-                                   If omitted, it will be written to stdout.""")
-
-    @staticmethod
-    def run(args):
-        if args.output != '-':
-            raise NotImplementedError('Only output to stdout is currently implemented.')
-        return run_legacy_script('specialphrases.php', '--wiki-import', nominatim_env=args)
-
-
-class UpdateReplication:
-    """\
-    Update the database using an online replication service.
-    """
-
-    @staticmethod
-    def add_args(parser):
-        group = parser.add_argument_group('Arguments for initialisation')
-        group.add_argument('--init', action='store_true',
-                           help='Initialise the update process')
-        group.add_argument('--no-update-functions', dest='update_functions',
-                           action='store_false',
-                           help="""Do not update the trigger function to
-                                   support differential updates.""")
-        group = parser.add_argument_group('Arguments for updates')
-        group.add_argument('--check-for-updates', action='store_true',
-                           help='Check if new updates are available and exit')
-        group.add_argument('--once', action='store_true',
-                           help="""Download and apply updates only once. When
-                                   not set, updates are continuously applied""")
-        group.add_argument('--no-index', action='store_false', dest='do_index',
-                           help="""Do not index the new data. Only applicable
-                                   together with --once""")
-        group.add_argument('--osm2pgsql-cache', metavar='SIZE', type=int,
-                           help='Size of cache to be used by osm2pgsql (in MB)')
-        group = parser.add_argument_group('Download parameters')
-        group.add_argument('--socket-timeout', dest='socket_timeout', type=int, default=60,
-                           help='Set timeout for file downloads.')
-
-    @staticmethod
-    def _init_replication(args):
-        from .tools import replication, refresh
-
-        socket.setdefaulttimeout(args.socket_timeout)
-
-        LOG.warning("Initialising replication updates")
-        conn = connect(args.config.get_libpq_dsn())
-        replication.init_replication(conn, base_url=args.config.REPLICATION_URL)
-        if args.update_functions:
-            LOG.warning("Create functions")
-            refresh.create_functions(conn, args.config, args.data_dir,
-                                     True, False)
-        conn.close()
-        return 0
-
-
-    @staticmethod
-    def _check_for_updates(args):
-        from .tools import replication
-
-        conn = connect(args.config.get_libpq_dsn())
-        ret = replication.check_for_updates(conn, base_url=args.config.REPLICATION_URL)
-        conn.close()
-        return ret
-
-    @staticmethod
-    def _report_update(batchdate, start_import, start_index):
-        def round_time(delta):
-            return dt.timedelta(seconds=int(delta.total_seconds()))
-
-        end = dt.datetime.now(dt.timezone.utc)
-        LOG.warning("Update completed. Import: %s. %sTotal: %s. Remaining backlog: %s.",
-                    round_time((start_index or end) - start_import),
-                    "Indexing: {} ".format(round_time(end - start_index))
-                    if start_index else '',
-                    round_time(end - start_import),
-                    round_time(end - batchdate))
-
-    @staticmethod
-    def _update(args):
-        from .tools import replication
-        from .indexer.indexer import Indexer
-
-        params = _osm2pgsql_options_from_args(args, 2000, 1)
-        params.update(base_url=args.config.REPLICATION_URL,
-                      update_interval=args.config.get_int('REPLICATION_UPDATE_INTERVAL'),
-                      import_file=args.project_dir / 'osmosischange.osc',
-                      max_diff_size=args.config.get_int('REPLICATION_MAX_DIFF'),
-                      indexed_only=not args.once)
-
-        # Sanity check to not overwhelm the Geofabrik servers.
-        if 'download.geofabrik.de'in params['base_url']\
-           and params['update_interval'] < 86400:
-            LOG.fatal("Update interval too low for download.geofabrik.de.\n"
-                      "Please check install documentation "
-                      "(https://nominatim.org/release-docs/latest/admin/Import-and-Update#"
-                      "setting-up-the-update-process).")
-            raise UsageError("Invalid replication update interval setting.")
-
-        if not args.once:
-            if not args.do_index:
-                LOG.fatal("Indexing cannot be disabled when running updates continuously.")
-                raise UsageError("Bad argument '--no-index'.")
-            recheck_interval = args.config.get_int('REPLICATION_RECHECK_INTERVAL')
-
-        while True:
-            conn = connect(args.config.get_libpq_dsn())
-            start = dt.datetime.now(dt.timezone.utc)
-            state = replication.update(conn, params)
-            status.log_status(conn, start, 'import')
-            batchdate, _, _ = status.get_status(conn)
-            conn.close()
-
-            if state is not replication.UpdateState.NO_CHANGES and args.do_index:
-                index_start = dt.datetime.now(dt.timezone.utc)
-                indexer = Indexer(args.config.get_libpq_dsn(),
-                                  args.threads or 1)
-                indexer.index_boundaries(0, 30)
-                indexer.index_by_rank(0, 30)
-
-                conn = connect(args.config.get_libpq_dsn())
-                status.set_indexed(conn, True)
-                status.log_status(conn, index_start, 'index')
-                conn.close()
-            else:
-                index_start = None
-
-            if LOG.isEnabledFor(logging.WARNING):
-                UpdateReplication._report_update(batchdate, start, index_start)
-
-            if args.once:
-                break
-
-            if state is replication.UpdateState.NO_CHANGES:
-                LOG.warning("No new changes. Sleeping for %d sec.", recheck_interval)
-                time.sleep(recheck_interval)
-
-        return state.value
-
-    @staticmethod
-    def run(args):
-        try:
-            import osmium # pylint: disable=W0611
-        except ModuleNotFoundError:
-            LOG.fatal("pyosmium not installed. Replication functions not available.\n"
-                      "To install pyosmium via pip: pip3 install osmium")
-            return 1
-
-        if args.init:
-            return UpdateReplication._init_replication(args)
-
-        if args.check_for_updates:
-            return UpdateReplication._check_for_updates(args)
-
-        return UpdateReplication._update(args)
-
-class UpdateAddData:
-    """\
-    Add additional data from a file or an online source.
-
-    Data is only imported, not indexed. You need to call `nominatim-update index`
-    to complete the process.
-    """
-
-    @staticmethod
-    def add_args(parser):
-        group_name = parser.add_argument_group('Source')
-        group = group_name.add_mutually_exclusive_group(required=True)
-        group.add_argument('--file', metavar='FILE',
-                           help='Import data from an OSM file')
-        group.add_argument('--diff', metavar='FILE',
-                           help='Import data from an OSM diff file')
-        group.add_argument('--node', metavar='ID', type=int,
-                           help='Import a single node from the API')
-        group.add_argument('--way', metavar='ID', type=int,
-                           help='Import a single way from the API')
-        group.add_argument('--relation', metavar='ID', type=int,
-                           help='Import a single relation from the API')
-        group.add_argument('--tiger-data', metavar='DIR',
-                           help='Add housenumbers from the US TIGER census database.')
-        group = parser.add_argument_group('Extra arguments')
-        group.add_argument('--use-main-api', action='store_true',
-                           help='Use OSM API instead of Overpass to download objects')
-
-    @staticmethod
-    def run(args):
-        if args.tiger_data:
-            os.environ['NOMINATIM_TIGER_DATA_PATH'] = args.tiger_data
-            return run_legacy_script('setup.php', '--import-tiger-data', nominatim_env=args)
-
-        params = ['update.php']
-        if args.file:
-            params.extend(('--import-file', args.file))
-        elif args.diff:
-            params.extend(('--import-diff', args.diff))
-        elif args.node:
-            params.extend(('--import-node', args.node))
-        elif args.way:
-            params.extend(('--import-way', args.way))
-        elif args.relation:
-            params.extend(('--import-relation', args.relation))
-        if args.use_main_api:
-            params.append('--use-main-api')
-        return run_legacy_script(*params, nominatim_env=args)
-
-
-class UpdateIndex:
-    """\
-    Reindex all new and modified data.
-    """
-
-    @staticmethod
-    def add_args(parser):
-        group = parser.add_argument_group('Filter arguments')
-        group.add_argument('--boundaries-only', action='store_true',
-                           help="""Index only administrative boundaries.""")
-        group.add_argument('--no-boundaries', action='store_true',
-                           help="""Index everything except administrative boundaries.""")
-        group.add_argument('--minrank', '-r', type=int, metavar='RANK', default=0,
-                           help='Minimum/starting rank')
-        group.add_argument('--maxrank', '-R', type=int, metavar='RANK', default=30,
-                           help='Maximum/finishing rank')
-
-    @staticmethod
-    def run(args):
-        from .indexer.indexer import Indexer
-
-        indexer = Indexer(args.config.get_libpq_dsn(),
-                          args.threads or _num_system_cpus() or 1)
-
-        if not args.no_boundaries:
-            indexer.index_boundaries(args.minrank, args.maxrank)
-        if not args.boundaries_only:
-            indexer.index_by_rank(args.minrank, args.maxrank)
-
-        if not args.no_boundaries and not args.boundaries_only \
-           and args.minrank == 0 and args.maxrank == 30:
-            conn = connect(args.config.get_libpq_dsn())
-            status.set_indexed(conn, True)
-            conn.close()
-
-        return 0
-
-
-class UpdateRefresh:
-    """\
-    Recompute auxiliary data used by the indexing process.
-
-    These functions must not be run in parallel with other update commands.
-    """
-
-    @staticmethod
-    def add_args(parser):
-        group = parser.add_argument_group('Data arguments')
-        group.add_argument('--postcodes', action='store_true',
-                           help='Update postcode centroid table')
-        group.add_argument('--word-counts', action='store_true',
-                           help='Compute frequency of full-word search terms')
-        group.add_argument('--address-levels', action='store_true',
-                           help='Reimport address level configuration')
-        group.add_argument('--functions', action='store_true',
-                           help='Update the PL/pgSQL functions in the database')
-        group.add_argument('--wiki-data', action='store_true',
-                           help='Update Wikipedia/data importance numbers.')
-        group.add_argument('--importance', action='store_true',
-                           help='Recompute place importances (expensive!)')
-        group.add_argument('--website', action='store_true',
-                           help='Refresh the directory that serves the scripts for the web API')
-        group = parser.add_argument_group('Arguments for function refresh')
-        group.add_argument('--no-diff-updates', action='store_false', dest='diffs',
-                           help='Do not enable code for propagating updates')
-        group.add_argument('--enable-debug-statements', action='store_true',
-                           help='Enable debug warning statements in functions')
-
-    @staticmethod
-    def run(args):
-        from .tools import refresh
-
-        if args.postcodes:
-            LOG.warning("Update postcodes centroid")
-            conn = connect(args.config.get_libpq_dsn())
-            refresh.update_postcodes(conn, args.data_dir)
-            conn.close()
-
-        if args.word_counts:
-            LOG.warning('Recompute frequency of full-word search terms')
-            conn = connect(args.config.get_libpq_dsn())
-            refresh.recompute_word_counts(conn, args.data_dir)
-            conn.close()
-
-        if args.address_levels:
-            cfg = Path(args.config.ADDRESS_LEVEL_CONFIG)
-            LOG.warning('Updating address levels from %s', cfg)
-            conn = connect(args.config.get_libpq_dsn())
-            refresh.load_address_levels_from_file(conn, cfg)
-            conn.close()
-
-        if args.functions:
-            LOG.warning('Create functions')
-            conn = connect(args.config.get_libpq_dsn())
-            refresh.create_functions(conn, args.config, args.data_dir,
-                                     args.diffs, args.enable_debug_statements)
-            conn.close()
-
-        if args.wiki_data:
-            run_legacy_script('setup.php', '--import-wikipedia-articles',
-                              nominatim_env=args, throw_on_fail=True)
-        # Attention: importance MUST come after wiki data import.
-        if args.importance:
-            run_legacy_script('update.php', '--recompute-importance',
-                              nominatim_env=args, throw_on_fail=True)
-        if args.website:
-            run_legacy_script('setup.php', '--setup-website',
-                              nominatim_env=args, throw_on_fail=True)
-
-        return 0
-
-
-class AdminCheckDatabase:
-    """\
-    Check that the database is complete and operational.
-    """
-
-    @staticmethod
-    def add_args(parser):
-        pass # No options
-
-    @staticmethod
-    def run(args):
-        return run_legacy_script('check_import_finished.php', nominatim_env=args)
-
-
-class AdminWarm:
-    """\
-    Warm database caches for search and reverse queries.
-    """
-
-    @staticmethod
-    def add_args(parser):
-        group = parser.add_argument_group('Target arguments')
-        group.add_argument('--search-only', action='store_const', dest='target',
-                           const='search',
-                           help="Only pre-warm tables for search queries")
-        group.add_argument('--reverse-only', action='store_const', dest='target',
-                           const='reverse',
-                           help="Only pre-warm tables for reverse queries")
-
-    @staticmethod
-    def run(args):
-        params = ['warm.php']
-        if args.target == 'reverse':
-            params.append('--reverse-only')
-        if args.target == 'search':
-            params.append('--search-only')
-        return run_legacy_script(*params, nominatim_env=args)
-
-

 class QueryExport:
     """\
     Export addresses as CSV file from the database.
     """
 
 class QueryExport:
     """\
     Export addresses as CSV file from the database.
     """
 

-    @staticmethod
-    def add_args(parser):
+    def add_args(self, parser: argparse.ArgumentParser) -> None:

         group = parser.add_argument_group('Output arguments')
         group.add_argument('--output-type', default='street',
                            choices=('continent', 'country', 'state', 'county',
         group = parser.add_argument_group('Output arguments')
         group.add_argument('--output-type', default='street',
                            choices=('continent', 'country', 'state', 'county',


@@ -598,16 +153,16 @@ class QueryExport:
                            help='Type of places to output (default: street)')
         group.add_argument('--output-format',
                            default='street;suburb;city;county;state;country',
                            help='Type of places to output (default: street)')
         group.add_argument('--output-format',
                            default='street;suburb;city;county;state;country',

-                           help="""Semicolon-separated list of address types
-                                   (see --output-type). Multiple ranks can be
-                                   merged into one column by simply using a
-                                   comma-separated list.""")
+                           help=("Semicolon-separated list of address types "
+                                 "(see --output-type). Multiple ranks can be "
+                                 "merged into one column by simply using a "
+                                 "comma-separated list."))

         group.add_argument('--output-all-postcodes', action='store_true',
         group.add_argument('--output-all-postcodes', action='store_true',

-                           help="""List all postcodes for address instead of
-                                   just the most likely one""")
+                           help=("List all postcodes for address instead of "
+                                 "just the most likely one"))

         group.add_argument('--language',
         group.add_argument('--language',

-                           help="""Preferred language for output
-                                   (use local name, if omitted)""")
+                           help=("Preferred language for output "
+                                 "(use local name, if omitted)"))

         group = parser.add_argument_group('Filter arguments')
         group.add_argument('--restrict-to-country', metavar='COUNTRY_CODE',
                            help='Export only objects within country')
         group = parser.add_argument_group('Filter arguments')
         group.add_argument('--restrict-to-country', metavar='COUNTRY_CODE',
                            help='Export only objects within country')


@@ -619,11 +174,10 @@ class QueryExport:
                            help='Export only children of this OSM relation')
 
 
                            help='Export only children of this OSM relation')
 
 

-    @staticmethod
-    def run(args):
-        params = ['export.php',
-                  '--output-type', args.output_type,
-                  '--output-format', args.output_format]
+    def run(self, args: NominatimArgs) -> int:
+        params: List[Union[int, str]] = [
+                             '--output-type', args.output_type,
+                             '--output-format', args.output_format]

         if args.output_all_postcodes:
             params.append('--output-all-postcodes')
         if args.language:
         if args.output_all_postcodes:
             params.append('--output-all-postcodes')
         if args.language:


@@ -637,301 +191,90 @@ class QueryExport:
         if args.restrict_to_osm_relation:
             params.extend(('--restrict-to-osm-relation', args.restrict_to_osm_relation))
 
         if args.restrict_to_osm_relation:
             params.extend(('--restrict-to-osm-relation', args.restrict_to_osm_relation))
 

-        return run_legacy_script(*params, nominatim_env=args)
+        return run_legacy_script('export.php', *params, config=args.config)

 
 
 class AdminServe:
     """\
     Start a simple web server for serving the API.
 
 
 
 class AdminServe:
     """\
     Start a simple web server for serving the API.
 

-    This command starts the built-in PHP webserver to serve the website
+    This command starts a built-in webserver to serve the website

     from the current project directory. This webserver is only suitable
     from the current project directory. This webserver is only suitable

-    for testing and develop. Do not use it in production setups!
+    for testing and development. Do not use it in production setups!
+
+    There are different webservers available. The default 'php' engine
+    runs the classic PHP frontend. The other engines are Python servers
+    which run the new Python frontend code. This is highly experimental
+    at the moment and may not include the full API.

 
     By the default, the webserver can be accessed at: http://127.0.0.1:8088
     """
 
 
     By the default, the webserver can be accessed at: http://127.0.0.1:8088
     """
 

-    @staticmethod
-    def add_args(parser):
+    def add_args(self, parser: argparse.ArgumentParser) -> None:

         group = parser.add_argument_group('Server arguments')
         group.add_argument('--server', default='127.0.0.1:8088',
                            help='The address the server will listen to.')
         group = parser.add_argument_group('Server arguments')
         group.add_argument('--server', default='127.0.0.1:8088',
                            help='The address the server will listen to.')

+        group.add_argument('--engine', default='php',
+                           choices=('php', 'falcon', 'starlette'),
+                           help='Webserver framework to run. (default: php)')

 
 

-    @staticmethod
-    def run(args):
-        run_php_server(args.server, args.project_dir / 'website')
-
-STRUCTURED_QUERY = (
-    ('street', 'housenumber and street'),
-    ('city', 'city, town or village'),
-    ('county', 'county'),
-    ('state', 'state'),
-    ('country', 'country'),
-    ('postalcode', 'postcode')
-)
-
-EXTRADATA_PARAMS = (
-    ('addressdetails', 'Include a breakdown of the address into elements.'),
-    ('extratags', """Include additional information if available
-                     (e.g. wikipedia link, opening hours)."""),
-    ('namedetails', 'Include a list of alternative names.')
-)
-
-DETAILS_SWITCHES = (
-    ('addressdetails', 'Include a breakdown of the address into elements.'),
-    ('keywords', 'Include a list of name keywords and address keywords.'),
-    ('linkedplaces', 'Include a details of places that are linked with this one.'),
-    ('hierarchy', 'Include details of places lower in the address hierarchy.'),
-    ('group_hierarchy', 'Group the places by type.'),
-    ('polygon_geojson', 'Include geometry of result.')
-)
-
-def _add_api_output_arguments(parser):
-    group = parser.add_argument_group('Output arguments')
-    group.add_argument('--format', default='jsonv2',
-                       choices=['xml', 'json', 'jsonv2', 'geojson', 'geocodejson'],
-                       help='Format of result')
-    for name, desc in EXTRADATA_PARAMS:
-        group.add_argument('--' + name, action='store_true', help=desc)
-
-    group.add_argument('--lang', '--accept-language', metavar='LANGS',
-                       help='Preferred language order for presenting search results')
-    group.add_argument('--polygon-output',
-                       choices=['geojson', 'kml', 'svg', 'text'],
-                       help='Output geometry of results as a GeoJSON, KML, SVG or WKT.')
-    group.add_argument('--polygon-threshold', type=float, metavar='TOLERANCE',
-                       help="""Simplify output geometry.
-                               Parameter is difference tolerance in degrees.""")
-
-
-class APISearch:
-    """\
-    Execute API search query.
-    """

 
 

-    @staticmethod
-    def add_args(parser):
-        group = parser.add_argument_group('Query arguments')
-        group.add_argument('--query',
-                           help='Free-form query string')
-        for name, desc in STRUCTURED_QUERY:
-            group.add_argument('--' + name, help='Structured query: ' + desc)
-
-        _add_api_output_arguments(parser)
-
-        group = parser.add_argument_group('Result limitation')
-        group.add_argument('--countrycodes', metavar='CC,..',
-                           help='Limit search results to one or more countries.')
-        group.add_argument('--exclude_place_ids', metavar='ID,..',
-                           help='List of search object to be excluded')
-        group.add_argument('--limit', type=int,
-                           help='Limit the number of returned results')
-        group.add_argument('--viewbox', metavar='X1,Y1,X2,Y2',
-                           help='Preferred area to find search results')
-        group.add_argument('--bounded', action='store_true',
-                           help='Strictly restrict results to viewbox area')
-
-        group = parser.add_argument_group('Other arguments')
-        group.add_argument('--no-dedupe', action='store_false', dest='dedupe',
-                           help='Do not remove duplicates from the result list')
-
-
-    @staticmethod
-    def run(args):
-        if args.query:
-            params = dict(q=args.query)
+    def run(self, args: NominatimArgs) -> int:
+        if args.engine == 'php':
+            run_php_server(args.server, args.project_dir / 'website')

         else:
         else:

-            params = {k : getattr(args, k) for k, _ in STRUCTURED_QUERY if getattr(args, k)}
-
-        for param, _ in EXTRADATA_PARAMS:
-            if getattr(args, param):
-                params[param] = '1'
-        for param in ('format', 'countrycodes', 'exclude_place_ids', 'limit', 'viewbox'):
-            if getattr(args, param):
-                params[param] = getattr(args, param)
-        if args.lang:
-            params['accept-language'] = args.lang
-        if args.polygon_output:
-            params['polygon_' + args.polygon_output] = '1'
-        if args.polygon_threshold:
-            params['polygon_threshold'] = args.polygon_threshold
-        if args.bounded:
-            params['bounded'] = '1'
-        if not args.dedupe:
-            params['dedupe'] = '0'
-
-        return run_api_script('search', args.project_dir,
-                              phpcgi_bin=args.phpcgi_path, params=params)
-
-class APIReverse:
-    """\
-    Execute API reverse query.
-    """
-
-    @staticmethod
-    def add_args(parser):
-        group = parser.add_argument_group('Query arguments')
-        group.add_argument('--lat', type=float, required=True,
-                           help='Latitude of coordinate to look up (in WGS84)')
-        group.add_argument('--lon', type=float, required=True,
-                           help='Longitude of coordinate to look up (in WGS84)')
-        group.add_argument('--zoom', type=int,
-                           help='Level of detail required for the address')
-
-        _add_api_output_arguments(parser)
-
-
-    @staticmethod
-    def run(args):
-        params = dict(lat=args.lat, lon=args.lon)
-        if args.zoom is not None:
-            params['zoom'] = args.zoom
-
-        for param, _ in EXTRADATA_PARAMS:
-            if getattr(args, param):
-                params[param] = '1'
-        if args.format:
-            params['format'] = args.format
-        if args.lang:
-            params['accept-language'] = args.lang
-        if args.polygon_output:
-            params['polygon_' + args.polygon_output] = '1'
-        if args.polygon_threshold:
-            params['polygon_threshold'] = args.polygon_threshold
-
-        return run_api_script('reverse', args.project_dir,
-                              phpcgi_bin=args.phpcgi_path, params=params)
-
-
-class APILookup:
-    """\
-    Execute API reverse query.
-    """
-
-    @staticmethod
-    def add_args(parser):
-        group = parser.add_argument_group('Query arguments')
-        group.add_argument('--id', metavar='OSMID',
-                           action='append', required=True, dest='ids',
-                           help='OSM id to lookup in format <NRW><id> (may be repeated)')
-
-        _add_api_output_arguments(parser)
-
+            import uvicorn # pylint: disable=import-outside-toplevel
+            server_info = args.server.split(':', 1)
+            host = server_info[0]
+            if len(server_info) > 1:
+                if not server_info[1].isdigit():
+                    raise UsageError('Invalid format for --server parameter. Use <host>:<port>')
+                port = int(server_info[1])
+            else:
+                port = 8088

 
 

-    @staticmethod
-    def run(args):
-        params = dict(osm_ids=','.join(args.ids))
+            server_module = importlib.import_module(f'nominatim.server.{args.engine}.server')

 
 

-        for param, _ in EXTRADATA_PARAMS:
-            if getattr(args, param):
-                params[param] = '1'
-        if args.format:
-            params['format'] = args.format
-        if args.lang:
-            params['accept-language'] = args.lang
-        if args.polygon_output:
-            params['polygon_' + args.polygon_output] = '1'
-        if args.polygon_threshold:
-            params['polygon_threshold'] = args.polygon_threshold
+            app = server_module.get_application(args.project_dir)
+            uvicorn.run(app, host=host, port=port)

 
 

-        return run_api_script('lookup', args.project_dir,
-                              phpcgi_bin=args.phpcgi_path, params=params)
+        return 0

 
 
 
 

-class APIDetails:
+def get_set_parser() -> CommandlineParser:

     """\
     """\

-    Execute API lookup query.
+    Initializes the parser and adds various subcommands for
+    nominatim cli.

     """
     """

+    parser = CommandlineParser('nominatim', nominatim.__doc__)

 
 

-    @staticmethod
-    def add_args(parser):
-        group = parser.add_argument_group('Query arguments')
-        objs = group.add_mutually_exclusive_group(required=True)
-        objs.add_argument('--node', '-n', type=int,
-                          help="Look up the OSM node with the given ID.")
-        objs.add_argument('--way', '-w', type=int,
-                          help="Look up the OSM way with the given ID.")
-        objs.add_argument('--relation', '-r', type=int,
-                          help="Look up the OSM relation with the given ID.")
-        objs.add_argument('--place_id', '-p', type=int,
-                          help='Database internal identifier of the OSM object to look up.')
-        group.add_argument('--class', dest='object_class',
-                           help="""Class type to disambiguated multiple entries
-                                   of the same object.""")
+    parser.add_subcommand('import', clicmd.SetupAll())
+    parser.add_subcommand('freeze', clicmd.SetupFreeze())
+    parser.add_subcommand('replication', clicmd.UpdateReplication())

 
 

-        group = parser.add_argument_group('Output arguments')
-        for name, desc in DETAILS_SWITCHES:
-            group.add_argument('--' + name, action='store_true', help=desc)
-        group.add_argument('--lang', '--accept-language', metavar='LANGS',
-                           help='Preferred language order for presenting search results')
-
-    @staticmethod
-    def run(args):
-        if args.node:
-            params = dict(osmtype='N', osmid=args.node)
-        elif args.way:
-            params = dict(osmtype='W', osmid=args.node)
-        elif args.relation:
-            params = dict(osmtype='R', osmid=args.node)
-        else:
-            params = dict(place_id=args.place_id)
-        if args.object_class:
-            params['class'] = args.object_class
-        for name, _ in DETAILS_SWITCHES:
-            params[name] = '1' if getattr(args, name) else '0'
+    parser.add_subcommand('special-phrases', clicmd.ImportSpecialPhrases())

 
 

-        return run_api_script('details', args.project_dir,
-                              phpcgi_bin=args.phpcgi_path, params=params)
+    parser.add_subcommand('add-data', clicmd.UpdateAddData())
+    parser.add_subcommand('index', clicmd.UpdateIndex())
+    parser.add_subcommand('refresh', clicmd.UpdateRefresh())

 
 

+    parser.add_subcommand('admin', clicmd.AdminFuncs())

 
 

-class APIStatus:
-    """\
-    Execute API status query.
-    """
+    parser.add_subcommand('export', QueryExport())
+    parser.add_subcommand('serve', AdminServe())

 
 

-    @staticmethod
-    def add_args(parser):
-        group = parser.add_argument_group('API parameters')
-        group.add_argument('--format', default='text', choices=['text', 'json'],
-                           help='Format of result')
+    parser.add_subcommand('search', clicmd.APISearch())
+    parser.add_subcommand('reverse', clicmd.APIReverse())
+    parser.add_subcommand('lookup', clicmd.APILookup())
+    parser.add_subcommand('details', clicmd.APIDetails())
+    parser.add_subcommand('status', clicmd.APIStatus())

 
 

-    @staticmethod
-    def run(args):
-        return run_api_script('status', args.project_dir,
-                              phpcgi_bin=args.phpcgi_path,
-                              params=dict(format=args.format))
+    return parser

 
 
 
 

-def nominatim(**kwargs):
+def nominatim(**kwargs: Any) -> int:

     """\
     Command-line tools for importing, updating, administrating and
     querying the Nominatim database.
     """
     """\
     Command-line tools for importing, updating, administrating and
     querying the Nominatim database.
     """

-    parser = CommandlineParser('nominatim', nominatim.__doc__)
-
-    parser.add_subcommand('import', SetupAll)
-    parser.add_subcommand('freeze', SetupFreeze)
-    parser.add_subcommand('replication', UpdateReplication)
-
-    parser.add_subcommand('check-database', AdminCheckDatabase)
-    parser.add_subcommand('warm', AdminWarm)
-
-    parser.add_subcommand('special-phrases', SetupSpecialPhrases)
-
-    parser.add_subcommand('add-data', UpdateAddData)
-    parser.add_subcommand('index', UpdateIndex)
-    parser.add_subcommand('refresh', UpdateRefresh)
-
-    parser.add_subcommand('export', QueryExport)
-    parser.add_subcommand('serve', AdminServe)
-
-    if kwargs.get('phpcgi_path'):
-        parser.add_subcommand('search', APISearch)
-        parser.add_subcommand('reverse', APIReverse)
-        parser.add_subcommand('lookup', APILookup)
-        parser.add_subcommand('details', APIDetails)
-        parser.add_subcommand('status', APIStatus)
-    else:
-        parser.parser.epilog = 'php-cgi not found. Query commands not available.'
-
-    return parser.run(**kwargs)
+    return get_set_parser().run(**kwargs)