Merge pull request #2181 from lonvia/port-more-tool-functions-to-python

[nominatim.git] / nominatim / tools / exec_utils.py

diff --git a/nominatim/tools/exec_utils.py b/nominatim/tools/exec_utils.py
index 0158227957f04bc6afa76f820e276672213a1e7f..f373f347dd23936fd155edda465373fcb09e42d4 100644 (file)
--- a/nominatim/tools/exec_utils.py
+++ b/nominatim/tools/exec_utils.py
@@ -1,7 +1,17 @@
 """
 Helper functions for executing external programs.
 """
+import logging
+import os
 import subprocess
+import urllib.request as urlrequest
+from urllib.parse import urlencode
+
+from psycopg2.extensions import parse_dsn
+
+from ..version import NOMINATIM_VERSION
+
+LOG = logging.getLogger()
 
 def run_legacy_script(script, *args, nominatim_env=None, throw_on_fail=False):
     """ Run a Nominatim PHP script with the given arguments.
@@ -15,9 +25,9 @@ def run_legacy_script(script, *args, nominatim_env=None, throw_on_fail=False):
 
     env = nominatim_env.config.get_os_env()
     env['NOMINATIM_DATADIR'] = str(nominatim_env.data_dir)
-    env['NOMINATIM_BINDIR'] = str(nominatim_env.data_dir / 'utils')
-    if not env['NOMINATIM_DATABASE_MODULE_PATH']:
-        env['NOMINATIM_DATABASE_MODULE_PATH'] = nominatim_env.module_dir
+    env['NOMINATIM_SQLDIR'] = str(nominatim_env.sqllib_dir)
+    env['NOMINATIM_CONFIGDIR'] = str(nominatim_env.config_dir)
+    env['NOMINATIM_DATABASE_MODULE_SRC_PATH'] = nominatim_env.module_dir
     if not env['NOMINATIM_OSM2PGSQL_BINARY']:
         env['NOMINATIM_OSM2PGSQL_BINARY'] = nominatim_env.osm2pgsql_path
 
@@ -25,3 +35,114 @@ def run_legacy_script(script, *args, nominatim_env=None, throw_on_fail=False):
                           check=throw_on_fail)
 
     return proc.returncode
+
+def run_api_script(endpoint, project_dir, extra_env=None, phpcgi_bin=None,
+                   params=None):
+    """ Execute a Nominiatim API function.
+
+        The function needs a project directory that contains the website
+        directory with the scripts to be executed. The scripts will be run
+        using php_cgi. Query parameters can be added as named arguments.
+
+        Returns the exit code of the script.
+    """
+    log = logging.getLogger()
+    webdir = str(project_dir / 'website')
+    query_string = urlencode(params or {})
+
+    env = dict(QUERY_STRING=query_string,
+               SCRIPT_NAME='/{}.php'.format(endpoint),
+               REQUEST_URI='/{}.php?{}'.format(endpoint, query_string),
+               CONTEXT_DOCUMENT_ROOT=webdir,
+               SCRIPT_FILENAME='{}/{}.php'.format(webdir, endpoint),
+               HTTP_HOST='localhost',
+               HTTP_USER_AGENT='nominatim-tool',
+               REMOTE_ADDR='0.0.0.0',
+               DOCUMENT_ROOT=webdir,
+               REQUEST_METHOD='GET',
+               SERVER_PROTOCOL='HTTP/1.1',
+               GATEWAY_INTERFACE='CGI/1.1',
+               REDIRECT_STATUS='CGI')
+
+    if extra_env:
+        env.update(extra_env)
+
+    if phpcgi_bin is None:
+        cmd = ['/usr/bin/env', 'php-cgi']
+    else:
+        cmd = [str(phpcgi_bin)]
+
+    proc = subprocess.run(cmd, cwd=str(project_dir), env=env, capture_output=True,
+                          check=False)
+
+    if proc.returncode != 0 or proc.stderr:
+        if proc.stderr:
+            log.error(proc.stderr.decode('utf-8').replace('\\n', '\n'))
+        else:
+            log.error(proc.stdout.decode('utf-8').replace('\\n', '\n'))
+        return proc.returncode or 1
+
+    result = proc.stdout.decode('utf-8')
+    content_start = result.find('\r\n\r\n')
+
+    print(result[content_start + 4:].replace('\\n', '\n'))
+
+    return 0
+
+
+def run_php_server(server_address, base_dir):
+    """ Run the built-in server from the given directory.
+    """
+    subprocess.run(['/usr/bin/env', 'php', '-S', server_address],
+                   cwd=str(base_dir), check=True)
+
+
+def run_osm2pgsql(options):
+    """ Run osm2pgsql with the given options.
+    """
+    env = os.environ
+    cmd = [options['osm2pgsql'],
+           '--hstore', '--latlon', '--slim',
+           '--with-forward-dependencies', 'false',
+           '--log-progress', 'true',
+           '--number-processes', str(options['threads']),
+           '--cache', str(options['osm2pgsql_cache']),
+           '--output', 'gazetteer',
+           '--style', str(options['osm2pgsql_style'])
+          ]
+    if options['append']:
+        cmd.append('--append')
+
+    if options['flatnode_file']:
+        cmd.extend(('--flat-nodes', options['flatnode_file']))
+
+    dsn = parse_dsn(options['dsn'])
+    if 'password' in dsn:
+        env['PGPASSWORD'] = dsn['password']
+    if 'dbname' in dsn:
+        cmd.extend(('-d', dsn['dbname']))
+    if 'user' in dsn:
+        cmd.extend(('--username', dsn['user']))
+    for param in ('host', 'port'):
+        if param in dsn:
+            cmd.extend(('--' + param, dsn[param]))
+
+    if options.get('disable_jit', False):
+        env['PGOPTIONS'] = '-c jit=off -c max_parallel_workers_per_gather=0'
+
+    cmd.append(str(options['import_file']))
+
+    subprocess.run(cmd, cwd=options.get('cwd', '.'), env=env, check=True)
+
+
+def get_url(url):
+    """ Get the contents from the given URL and return it as a UTF-8 string.
+    """
+    headers = {"User-Agent" : "Nominatim/" + NOMINATIM_VERSION}
+
+    try:
+        with urlrequest.urlopen(urlrequest.Request(url, headers=headers)) as response:
+            return response.read().decode('utf-8')
+    except:
+        LOG.fatal('Failed to load URL: %s', url)
+        raise