-def command_csvimport(engine_uri, directory='.'):
- import csv
-
- from sqlalchemy.orm.attributes import instrumentation_registry
-
- # Use autocommit in case rows fail due to foreign key incest
- session = connect(engine_uri, autocommit=True, autoflush=False)
-
- metadata.create_all()
-
- # SQLAlchemy is retarded and there is no way for me to get a list of ORM
- # classes besides to inspect the module they all happen to live in for
- # things that look right.
- table_base = tables_module.TableBase
- orm_classes = {} # table object => table class
-
- for name in dir(tables_module):
- # dir() returns strings! How /convenient/.
- thingy = getattr(tables_module, name)
-
- if not isinstance(thingy, type):
- # Not a class; bail
- continue
- elif not issubclass(thingy, table_base):
- # Not a declarative table; bail
- continue
- elif thingy == table_base:
- # Declarative table base, so not a real table; bail
- continue
-
- # thingy is definitely a table class! Hallelujah.
- orm_classes[thingy.__table__] = thingy
-
- # Okay, run through the tables and actually load the data now
- for table_obj in metadata.sorted_tables:
- table_class = orm_classes[table_obj]
- table_name = table_obj.name
-
- # Print the table name but leave the cursor in a fixed column
- print table_name + '...', ' ' * (40 - len(table_name)),
- sys.stdout.flush()
-
- try:
- csvfile = open("%s/%s.csv" % (directory, table_name), 'rb')
- except IOError:
- # File doesn't exist; don't load anything!
- print 'no data!'
- continue
-
- reader = csv.reader(csvfile, lineterminator='\n')
- column_names = [unicode(column) for column in reader.next()]
-
- # Self-referential tables may contain rows with foreign keys of
- # other rows in the same table that do not yet exist. We'll keep
- # a running list of these and try inserting them again after the
- # rest are done
- failed_rows = []
-
- for csvs in reader:
- row = table_class()
-
- for column_name, value in zip(column_names, csvs):
- column = table_obj.c[column_name]
- if column.nullable and value == '':
- # Empty string in a nullable column really means NULL
- value = None
- elif isinstance(column.type, sqlalchemy.types.Boolean):
- # Boolean values are stored as string values 0/1, but both
- # of those evaluate as true; SQLA wants True/False
- if value == '0':
- value = False
- else:
- value = True
- else:
- # Otherwise, unflatten from bytes
- value = value.decode('utf-8')
-
- setattr(row, column_name, value)
-
- try:
- session.add(row)
- session.flush()
- except IntegrityError as e:
- failed_rows.append(row)
-
- # Loop over the failed rows and keep trying to insert them. If a loop
- # doesn't manage to insert any rows, bail.
- do_another_loop = True
- while failed_rows and do_another_loop:
- do_another_loop = False
-
- for i, row in enumerate(failed_rows):
- try:
- session.add(row)
- session.flush()
-
- # Success!
- del failed_rows[i]
- do_another_loop = True
- except IntegrityError as e:
- pass
-
- if failed_rows:
- print len(failed_rows), "rows failed"
+def get_parser(verbose=True):
+ """Returns an OptionParser prepopulated with the global options.
+
+ `verbose` is whether or not the options should be verbose by default.
+ """
+ parser = OptionParser()
+ parser.add_option('-e', '--engine', dest='engine_uri', default=None)
+ parser.add_option('-i', '--index', dest='index_dir', default=None)
+ parser.add_option('-q', '--quiet', dest='verbose', default=verbose, action='store_false')
+ parser.add_option('-v', '--verbose', dest='verbose', default=verbose, action='store_true')
+ return parser
+
+def get_session(options):
+ """Given a parsed options object, connects to the database and returns a
+ session.
+ """
+
+ engine_uri = options.engine_uri
+ got_from = 'command line'
+
+ if engine_uri is None:
+ engine_uri, got_from = defaults.get_default_db_uri_with_origin()
+
+ session = pokedex.db.connect(engine_uri)
+
+ if options.verbose:
+ print "Connected to database %(engine)s (from %(got_from)s)" \
+ % dict(engine=session.bind.url, got_from=got_from)
+
+ return session
+
+def get_lookup(options, session=None, recreate=False):
+ """Given a parsed options object, opens the whoosh index and returns a
+ PokedexLookup object.
+ """
+
+ if recreate and not session:
+ raise ValueError("get_lookup() needs an explicit session to regen the index")
+
+ index_dir = options.index_dir
+ got_from = 'command line'
+
+ if index_dir is None:
+ index_dir, got_from = defaults.get_default_index_dir_with_origin()
+
+ if options.verbose:
+ print "Opened lookup index %(index_dir)s (from %(got_from)s)" \
+ % dict(index_dir=index_dir, got_from=got_from)
+
+ lookup = pokedex.lookup.PokedexLookup(index_dir, session=session)
+
+ if recreate:
+ lookup.rebuild_index()
+
+ return lookup
+
+def get_csv_directory(options):
+ """Prints and returns the csv directory we're about to use."""
+
+ if not options.verbose:
+ return
+
+ csvdir = options.directory
+ got_from = 'command line'
+
+ if csvdir is None:
+ csvdir, got_from = defaults.get_default_csv_dir_with_origin()
+
+ print "Using CSV directory %(csvdir)s (from %(got_from)s)" \
+ % dict(csvdir=csvdir, got_from=got_from)
+
+ return csvdir
+
+
+### Plumbing commands
+
+def command_dump(*args):
+ parser = get_parser(verbose=True)
+ parser.add_option('-d', '--directory', dest='directory', default=None)
+ options, tables = parser.parse_args(list(args))
+
+ session = get_session(options)
+ get_csv_directory(options)
+
+ pokedex.db.load.dump(session, directory=options.directory,
+ tables=tables,
+ verbose=options.verbose)
+
+def command_load(*args):
+ parser = get_parser(verbose=True)
+ parser.add_option('-d', '--directory', dest='directory', default=None)
+ parser.add_option('-D', '--drop-tables', dest='drop_tables', default=False, action='store_true')
+ options, tables = parser.parse_args(list(args))
+
+ if not options.engine_uri:
+ print "WARNING: You're reloading the default database, but not the lookup index. They"
+ print " might get out of sync, and pokedex commands may not work correctly!"
+ print "To fix this, run `pokedex reindex` when this command finishes. Or, just use"
+ print "`pokedex setup` to do both at once."
+ print
+
+ session = get_session(options)
+ get_csv_directory(options)
+
+ pokedex.db.load.load(session, directory=options.directory,
+ drop_tables=options.drop_tables,
+ tables=tables,
+ verbose=options.verbose,
+ safe=False)
+
+def command_reindex(*args):
+ parser = get_parser(verbose=True)
+ options, _ = parser.parse_args(list(args))
+
+ session = get_session(options)
+ lookup = get_lookup(options, session=session, recreate=True)
+
+ print "Recreated lookup index."
+
+
+def command_setup(*args):
+ parser = get_parser(verbose=False)
+ options, _ = parser.parse_args(list(args))
+
+ options.directory = None
+
+ session = get_session(options)
+ get_csv_directory(options)
+ pokedex.db.load.load(session, directory=None, drop_tables=True,
+ verbose=options.verbose,
+ safe=False)
+
+ lookup = get_lookup(options, session=session, recreate=True)
+
+ print "Recreated lookup index."
+
+
+def command_status(*args):
+ parser = get_parser(verbose=True)
+ options, _ = parser.parse_args(list(args))
+ options.verbose = True
+ options.directory = None
+
+ # Database, and a lame check for whether it's been inited at least once
+ session = get_session(options)
+ print " - OK! Connected successfully."
+
+ if pokedex.db.tables.Pokemon.__table__.exists(session.bind):
+ print " - OK! Database seems to contain some data."
+ else:
+ print " - WARNING: Database appears to be empty."
+
+ # CSV; simple checks that the dir exists
+ csvdir = get_csv_directory(options)
+ if not os.path.exists(csvdir):
+ print " - ERROR: No such directory!"
+ elif not os.path.isdir(csvdir):
+ print " - ERROR: Not a directory!"
+ else:
+ print " - OK! Directory exists."
+
+ if os.access(csvdir, os.R_OK):
+ print " - OK! Can read from directory."
+ else:
+ print " - ERROR: Can't read from directory!"
+
+ if os.access(csvdir, os.W_OK):
+ print " - OK! Can write to directory."
projects / zzz-pokedex.git / blobdiff