test/bdd/environment.py

   1 from behave import *
   2 import logging
   3 import os
   4 import psycopg2
   5 import psycopg2.extras
   6 import subprocess
   7 import tempfile
   8 from nose.tools import * # for assert functions
   9 from sys import version_info as python_version
  10
  11 logger = logging.getLogger(__name__)
  12
  13 userconfig = {
  14     'BUILDDIR' : os.path.join(os.path.split(__file__)[0], "../../build"),
  15     'REMOVE_TEMPLATE' : False,
  16     'KEEP_TEST_DB' : False,
  17     'TEMPLATE_DB' : 'test_template_nominatim',
  18     'TEST_DB' : 'test_nominatim',
  19     'API_TEST_DB' : 'test_api_nominatim',
  20     'TEST_SETTINGS_FILE' : '/tmp/nominatim_settings.php',
  21     'PHPCOV' : False, # set to output directory to enable code coverage
  22 }
  23
  24 use_step_matcher("re")
  25
  26 class NominatimEnvironment(object):
  27     """ Collects all functions for the execution of Nominatim functions.
  28     """
  29
  30     def __init__(self, config):
  31         self.build_dir = os.path.abspath(config['BUILDDIR'])
  32         self.src_dir = os.path.abspath(os.path.join(os.path.split(__file__)[0], "../.."))
  33         self.template_db = config['TEMPLATE_DB']
  34         self.test_db = config['TEST_DB']
  35         self.api_test_db = config['API_TEST_DB']
  36         self.local_settings_file = config['TEST_SETTINGS_FILE']
  37         self.reuse_template = not config['REMOVE_TEMPLATE']
  38         self.keep_scenario_db = config['KEEP_TEST_DB']
  39         self.code_coverage_path = config['PHPCOV']
  40         self.code_coverage_id = 1
  41         os.environ['NOMINATIM_SETTINGS'] = self.local_settings_file
  42
  43         self.template_db_done = False
  44
  45     def next_code_coverage_file(self):
  46         fn = os.path.join(self.code_coverage_path, "%06d.cov" % self.code_coverage_id)
  47         self.code_coverage_id += 1
  48
  49         return fn
  50
  51     def write_nominatim_config(self, dbname):
  52         f = open(self.local_settings_file, 'w')
  53         f.write("<?php\n  @define('CONST_Database_DSN', 'pgsql://@/%s');\n" % dbname)
  54         f.write("@define('CONST_Osm2pgsql_Flatnode_File', null);\n")
  55         f.close()
  56
  57     def cleanup(self):
  58         try:
  59             os.remove(self.local_settings_file)
  60         except OSError:
  61             pass # ignore missing file
  62
  63     def db_drop_database(self, name):
  64         conn = psycopg2.connect(database='postgres')
  65         conn.set_isolation_level(0)
  66         cur = conn.cursor()
  67         cur.execute('DROP DATABASE IF EXISTS %s' % (name, ))
  68         conn.close()
  69
  70     def setup_template_db(self):
  71         if self.template_db_done:
  72             return
  73
  74         self.template_db_done = True
  75
  76         if self.reuse_template:
  77             # check that the template is there
  78             conn = psycopg2.connect(database='postgres')
  79             cur = conn.cursor()
  80             cur.execute('select count(*) from pg_database where datname = %s',
  81                         (self.template_db,))
  82             if cur.fetchone()[0] == 1:
  83                 return
  84             conn.close()
  85         else:
  86             # just in case... make sure a previous table has been dropped
  87             self.db_drop_database(self.template_db)
  88
  89         try:
  90             # call the first part of database setup
  91             self.write_nominatim_config(self.template_db)
  92             self.run_setup_script('create-db', 'setup-db')
  93             # remove external data to speed up indexing for tests
  94             conn = psycopg2.connect(database=self.template_db)
  95             cur = conn.cursor()
  96             cur.execute("""select tablename from pg_tables
  97                            where tablename in ('gb_postcode', 'us_postcode')""")
  98             for t in cur:
  99                 conn.cursor().execute('TRUNCATE TABLE %s' % (t[0],))
 100             conn.commit()
 101             conn.close()
 102
 103             # execute osm2pgsql import on an empty file to get the right tables
 104             with tempfile.NamedTemporaryFile(dir='/tmp', suffix='.xml') as fd:
 105                 fd.write(b'<osm version="0.6"></osm>')
 106                 fd.flush()
 107                 self.run_setup_script('import-data',
 108                                       'ignore-errors',
 109                                       'create-functions',
 110                                       'create-tables',
 111                                       'create-partition-tables',
 112                                       'create-partition-functions',
 113                                       'load-data',
 114                                       'create-search-indices',
 115                                       osm_file=fd.name,
 116                                       osm2pgsql_cache='200')
 117         except:
 118             self.db_drop_database(self.template_db)
 119             raise
 120
 121
 122     def setup_api_db(self, context):
 123         self.write_nominatim_config(self.api_test_db)
 124
 125     def setup_db(self, context):
 126         self.setup_template_db()
 127         self.write_nominatim_config(self.test_db)
 128         conn = psycopg2.connect(database=self.template_db)
 129         conn.set_isolation_level(0)
 130         cur = conn.cursor()
 131         cur.execute('DROP DATABASE IF EXISTS %s' % (self.test_db, ))
 132         cur.execute('CREATE DATABASE %s TEMPLATE = %s' % (self.test_db, self.template_db))
 133         conn.close()
 134         context.db = psycopg2.connect(database=self.test_db)
 135         if python_version[0] < 3:
 136             psycopg2.extras.register_hstore(context.db, globally=False, unicode=True)
 137         else:
 138             psycopg2.extras.register_hstore(context.db, globally=False)
 139
 140     def teardown_db(self, context):
 141         if 'db' in context:
 142             context.db.close()
 143
 144         if not self.keep_scenario_db:
 145             self.db_drop_database(self.test_db)
 146
 147     def run_setup_script(self, *args, **kwargs):
 148         self.run_nominatim_script('setup', *args, **kwargs)
 149
 150     def run_update_script(self, *args, **kwargs):
 151         self.run_nominatim_script('update', *args, **kwargs)
 152
 153     def run_nominatim_script(self, script, *args, **kwargs):
 154         cmd = [os.path.join(self.build_dir, 'utils', '%s.php' % script)]
 155         cmd.extend(['--%s' % x for x in args])
 156         for k, v in kwargs.items():
 157             cmd.extend(('--' + k.replace('_', '-'), str(v)))
 158         proc = subprocess.Popen(cmd, cwd=self.build_dir,
 159                                 stdout=subprocess.PIPE, stderr=subprocess.PIPE)
 160         (outp, outerr) = proc.communicate()
 161         logger.debug("run_nominatim_script: %s\n%s\n%s" % (cmd, outp, outerr))
 162         assert (proc.returncode == 0), "Script '%s' failed:\n%s\n%s\n" % (script, outp, outerr)
 163
 164
 165 class OSMDataFactory(object):
 166
 167     def __init__(self):
 168         scriptpath = os.path.dirname(os.path.abspath(__file__))
 169         self.scene_path = os.environ.get('SCENE_PATH',
 170                            os.path.join(scriptpath, '..', 'scenes', 'data'))
 171         self.scene_cache = {}
 172         self.clear_grid()
 173
 174     def parse_geometry(self, geom, scene):
 175         if geom.find(':') >= 0:
 176             return "ST_SetSRID(%s, 4326)" % self.get_scene_geometry(scene, geom)
 177
 178         if geom.find(',') < 0:
 179             out = "POINT(%s)" % self.mk_wkt_point(geom)
 180         elif geom.find('(') < 0:
 181             line = ','.join([self.mk_wkt_point(x) for x in geom.split(',')])
 182             out = "LINESTRING(%s)" % line
 183         else:
 184             inner = geom.strip('() ')
 185             line = ','.join([self.mk_wkt_point(x) for x in inner.split(',')])
 186             out = "POLYGON((%s))" % line
 187
 188         return "ST_SetSRID('%s'::geometry, 4326)" % out
 189
 190     def mk_wkt_point(self, point):
 191         geom = point.strip()
 192         if geom.find(' ') >= 0:
 193             return geom
 194         else:
 195             pt = self.grid_node(int(geom))
 196             assert_is_not_none(pt, "Point not found in grid")
 197             return "%f %f" % pt
 198
 199     def get_scene_geometry(self, default_scene, name):
 200         geoms = []
 201         for obj in name.split('+'):
 202             oname = obj.strip()
 203             if oname.startswith(':'):
 204                 assert_is_not_none(default_scene, "You need to set a scene")
 205                 defscene = self.load_scene(default_scene)
 206                 wkt = defscene[oname[1:]]
 207             else:
 208                 scene, obj = oname.split(':', 2)
 209                 scene_geoms = self.load_scene(scene)
 210                 wkt = scene_geoms[obj]
 211
 212             geoms.append("'%s'::geometry" % wkt)
 213
 214         if len(geoms) == 1:
 215             return geoms[0]
 216         else:
 217             return 'ST_LineMerge(ST_Collect(ARRAY[%s]))' % ','.join(geoms)
 218
 219     def load_scene(self, name):
 220         if name in self.scene_cache:
 221             return self.scene_cache[name]
 222
 223         scene = {}
 224         with open(os.path.join(self.scene_path, "%s.wkt" % name), 'r') as fd:
 225             for line in fd:
 226                 if line.strip():
 227                     obj, wkt = line.split('|', 2)
 228                     scene[obj.strip()] = wkt.strip()
 229             self.scene_cache[name] = scene
 230
 231         return scene
 232
 233     def clear_grid(self):
 234         self.grid = {}
 235
 236     def add_grid_node(self, nodeid, x, y):
 237         self.grid[nodeid] = (x, y)
 238
 239     def grid_node(self, nodeid):
 240         return self.grid.get(nodeid)
 241
 242
 243 def before_all(context):
 244     # logging setup
 245     context.config.setup_logging()
 246     # set up -D options
 247     for k,v in userconfig.items():
 248         context.config.userdata.setdefault(k, v)
 249     logging.debug('User config: %s' %(str(context.config.userdata)))
 250     # Nominatim test setup
 251     context.nominatim = NominatimEnvironment(context.config.userdata)
 252     context.osm = OSMDataFactory()
 253
 254 def after_all(context):
 255     context.nominatim.cleanup()
 256
 257
 258 def before_scenario(context, scenario):
 259     if 'DB' in context.tags:
 260         context.nominatim.setup_db(context)
 261     elif 'APIDB' in context.tags:
 262         context.nominatim.setup_api_db(context)
 263     context.scene = None
 264
 265 def after_scenario(context, scenario):
 266     if 'DB' in context.tags:
 267         context.nominatim.teardown_db(context)
 268