Source code for biothings.web.settings

# -*- coding: utf-8 -*-
'''Settings objects used to configure the web API
These settings get passed into the handler.initialize() function,
of each request, and configure the web API endpoint.  They are mostly
a container for the `Config module`_, and any other settings that
are the same across all handler types, e.g. the Elasticsearch client.'''

import logging
import os, types
import socket
from importlib import import_module
from biothings.utils.web.log import get_hipchat_logger
import json

# Error class
class BiothingConfigError(Exception):
    pass

[docs]class BiothingWebSettings(object): ''' A container for the settings that configure the web API ''' def __init__(self, config='biothings.web.settings.default'): ''' The ``config`` init parameter specifies a module that configures this biothing. For more information see `config module`_ documentation.''' self.config_mod = type(config) == types.ModuleType and config or import_module(config) try: with open(os.path.abspath(self.config_mod.JSONLD_CONTEXT_PATH), 'r') as json_file: self._jsonld_context = json.load(json_file) except: self._jsonld_context = {} # for metadata dev self._app_git_repo = os.path.abspath(self.APP_GIT_REPOSITORY) if hasattr(self, 'APP_GIT_REPOSITORY') else os.path.abspath('.') if not (self._app_git_repo and os.path.exists(self._app_git_repo) and os.path.isdir(self._app_git_repo) and os.path.exists(os.path.join(self._app_git_repo, '.git'))): self._app_git_repo = None # for logging exceptions to hipchat if self.HIPCHAT_ROOM and self.HIPCHAT_AUTH_TOKEN: try: _socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) _socket.connect(self.HIPCHAT_AUTO_FROM_SOCKET_CONNECTION) # set up socket _from = _socket.getsockname()[0] # try to get local ip as the "from" key except: _from = None self._hipchat_logger = get_hipchat_logger(hipchat_room=self.HIPCHAT_ROOM, hipchat_auth_token=self.HIPCHAT_AUTH_TOKEN, hipchat_msg_from=_from, hipchat_log_format=getattr(self, 'HIPCHAT_MESSAGE_FORMAT', None), hipchat_msg_color=self.HIPCHAT_MESSAGE_COLOR) else: self._hipchat_logger = None # validate these settings? self.validate() def __getattr__(self, name): try: return getattr(self.config_mod, name) except AttributeError: raise AttributeError("No setting named '{}' was found, check configuration module.".format(name))
[docs] def set_debug_level(self, debug=False): '''Set if running API in debug mode. Should be called before passing ``self`` to handler initialization.''' self._DEBUG = debug return self
[docs] def generate_app_list(self): ''' Generates the tornado.web.Application `(regex, handler_class, options) tuples <http://www.tornadoweb.org/en/stable/web.html#application-configuration>`_ for this project.''' return [(endpoint_regex, handler, {"web_settings": self}) for (endpoint_regex, handler) in self.APP_LIST]
[docs] def validate(self): ''' Validate these settings ''' pass
[docs]class BiothingESWebSettings(BiothingWebSettings): ''' `BiothingWebSettings`_ subclass with functions specific to an elasticsearch backend ''' def __init__(self, config='biothings.web.settings.default'): ''' The ``config`` init parameter specifies a module that configures this biothing. For more information see `config module`_ documentation.''' super(BiothingESWebSettings, self).__init__(config) # get es client for web self.es_client = self.get_es_client() # populate the metadata for this project self.source_metadata() # initialize payload for standalone tracking batch self.tracking_payload = []
[docs] def doc_url(self, bid): ''' Function to return a url on this biothing API to the biothing object specified by bid.''' return os.path.join(self.URL_BASE, self.API_VERSION, self.ES_DOC_TYPE, bid)
def _source_metadata_object(self): ''' Override me to return metadata for your project ''' return {}
[docs] def source_metadata(self): ''' Function to cache return of the source metadata stored in _meta of index mappings ''' if getattr(self, '_source_metadata', False): return self._source_metadata self._source_metadata = self._source_metadata_object() return self._source_metadata
[docs] def get_es_client(self): '''Get the `Elasticsearch client <https://elasticsearch-py.readthedocs.io/en/master/>`_ for this app, only called once on invocation of server. ''' from elasticsearch import Elasticsearch return Elasticsearch(self.ES_HOST, timeout=getattr(self, 'ES_CLIENT_TIMEOUT', 120))