Source code for polyglot.nodeserver_helpers

""" Helper functions for managing Node Servers. """
import json
import logging
import os

_LOGGER = logging.getLogger(__name__)
SOURCE_DIR = os.path.dirname(__file__)
SERVER_LIB = os.path.abspath(os.path.join(SOURCE_DIR, 'node_servers'))

[docs]def available_servers(): ''' list all available elements ''' paths = dirs_in(SERVER_LIB) + dirs_in(SERVER_LIB_EXTERNAL) out = {} for path in paths: try: def_file = os.path.join(path, 'server.json') definition = json.loads(open(def_file).read()) name = definition['name'] platform = [val for val in path.split(os.path.sep) if val != ''][-1] except (IOError, ValueError, KeyError, TypeError): _LOGGER.error("Error reading server.json for %s", path) else: out[platform] = {'path': path, 'name': name} return out
[docs]def get_path(platform): """ Find Node Server Platform path """ for lib in [SERVER_LIB, SERVER_LIB_EXTERNAL]: if platform in dirs_in(lib, False): path = os.path.join(lib, platform) return path raise ValueError( "Could not find node server: {}".format(platform))
[docs]def dirs_in(path, include_path=True): ''' Returns a list of directories in a path. :param path: The path to search. ''' if path is None: return [] out = [] for obj in os.listdir(path): if not ignore_dir(path, obj): if include_path: out.append(os.path.join(path, obj)) else: out.append(obj) return out
[docs]def ignore_dir(path, dir_name): """ Deterermine if a directory should be ignored. """ return dir_name.startswith('.') \ or not os.path.isdir(os.path.join(path, dir_name)) \ or dir_name == "CVS"