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# coding: utf-8
"""
This module handles the configuration management for Flatisfy.
It loads the default configuration, then overloads it with the provided config
file and then overloads it with command-line options.
"""
from __future__ import absolute_import, print_function, unicode_literals
from builtins import str
import json
import logging
import os
import sys
import traceback
import appdirs
from weboob.capabilities.housing import POSTS_TYPES, HOUSE_TYPES
from flatisfy import data
from flatisfy import tools
from flatisfy.constants import TimeToModes
from flatisfy.models.postal_code import PostalCode
# Default configuration
DEFAULT_CONFIG = {
# Constraints to match
"constraints": {
"default": {
"type": None, # RENT, SALE, SHARING
"house_types": [], # List of house types, must be in APART, HOUSE,
# PARKING, LAND, OTHER or UNKNOWN
"postal_codes": [], # List of postal codes
"area": (None, None), # (min, max) in m^2
"cost": (None, None), # (min, max) in currency unit
"rooms": (None, None), # (min, max)
"bedrooms": (None, None), # (min, max)
"minimum_nb_photos": None, # min number of photos
"description_should_contain": [], # list of terms
"description_should_not_contain": [ # list of terms
"vendu",
"Vendu",
"VENDU",
"recherche"
],
"time_to": {} # Dict mapping names to {"gps": [lat, lng],
# "time": (min, max),
# "mode": Valid mode }
# Time is in seconds
}
},
# Whether or not to store personal data from housing posts (phone number
# etc)
"store_personal_data": False,
# Max distance between an housing and a found station, to avoid
# false-positive
"max_distance_housing_station": 1500,
# Score to consider two flats as being duplicates
"duplicate_threshold": 15,
# Score to consider two images as being duplicates through hash comparison
"duplicate_image_hash_threshold": 10,
# Whether images should be downloaded and served locally
"serve_images_locally": True,
# Navitia API key
"navitia_api_key": None,
# Mapbox API key
"mapbox_api_key": None,
# Number of filtering passes to run
"passes": 3,
# Maximum number of entries to fetch
"max_entries": None,
# Directory in wich data will be put. ``None`` is XDG default location.
"data_directory": None,
# Path to the modules directory containing all Weboob modules. ``None`` if
# ``weboob_modules`` package is pip-installed, and you want to use
# ``pkgresource`` to automatically find it.
"modules_path": None,
# SQLAlchemy URI to the database to use
"database": None,
# Path to the Whoosh search index file. Use ``None`` to put it in
# ``data_directory``.
"search_index": None,
# Web app port
"port": 8080,
# Web app host to listen on
"host": "127.0.0.1",
# Web server to use to serve the webapp (see Bottle deployment doc)
"webserver": None,
# List of Weboob backends to use (default to any backend available)
"backends": None,
# Should email notifications be sent?
"send_email": False,
"smtp_server": 'localhost',
"smtp_port": 25,
"smtp_username": None,
"smtp_password": None,
"smtp_from": "noreply@flatisfy.org",
"smtp_to": [],
# The web site url, to be used in email notifications. (doesn't matter
# whether the trailing slash is present or not)
"website_url": "http://127.0.0.1:8080"
}
LOGGER = logging.getLogger(__name__)
def validate_config(config, check_with_data):
"""
Check that the config passed as argument is a valid configuration.
:param config: A config dictionary to fetch.
:param check_with_data: Whether we should use the available OpenData to
check the config values.
:return: ``True`` if the configuration is valid, ``False`` otherwise.
"""
def _check_constraints_bounds(bounds):
"""
Check the bounds for numeric constraints.
"""
assert isinstance(bounds, list)
assert len(bounds) == 2
assert all(
x is None or
(
isinstance(x, (float, int)) and
x >= 0
)
for x in bounds
)
if bounds[0] is not None and bounds[1] is not None:
assert bounds[1] > bounds[0]
try:
# Note: The traceback fetching code only handle single line asserts.
# Then, we disable line-too-long pylint check and E501 flake8 checks
# and use long lines whenever needed, in order to have the full assert
# message in the log output.
# pylint: disable=locally-disabled,line-too-long
assert config["passes"] in [0, 1, 2, 3]
assert config["max_entries"] is None or (isinstance(config["max_entries"], int) and config["max_entries"] > 0) # noqa: E501
assert config["data_directory"] is None or isinstance(config["data_directory"], str) # noqa: E501
assert os.path.isdir(config["data_directory"])
assert isinstance(config["search_index"], str)
assert config["modules_path"] is None or isinstance(config["modules_path"], str) # noqa: E501
assert config["database"] is None or isinstance(config["database"], str) # noqa: E501
assert isinstance(config["port"], int)
assert isinstance(config["host"], str)
assert config["webserver"] is None or isinstance(config["webserver"], str) # noqa: E501
assert config["backends"] is None or isinstance(config["backends"], list) # noqa: E501
assert isinstance(config["send_email"], bool)
assert config["smtp_server"] is None or isinstance(config["smtp_server"], str) # noqa: E501
assert config["smtp_port"] is None or isinstance(config["smtp_port"], int) # noqa: E501
assert config["smtp_username"] is None or isinstance(config["smtp_username"], str) # noqa: E501
assert config["smtp_password"] is None or isinstance(config["smtp_password"], str) # noqa: E501
assert config["smtp_to"] is None or isinstance(config["smtp_to"], list)
assert isinstance(config["store_personal_data"], bool)
assert isinstance(config["max_distance_housing_station"], (int, float))
assert isinstance(config["duplicate_threshold"], int)
assert isinstance(config["duplicate_image_hash_threshold"], int)
# API keys
assert config["navitia_api_key"] is None or isinstance(config["navitia_api_key"], str) # noqa: E501
assert config["mapbox_api_key"] is None or isinstance(config["mapbox_api_key"], str) # noqa: E501
# Ensure constraints are ok
assert config["constraints"]
for constraint in config["constraints"].values():
assert "type" in constraint
assert isinstance(constraint["type"], str)
assert constraint["type"].upper() in POSTS_TYPES.__members__
assert "minimum_nb_photos" in constraint
if constraint["minimum_nb_photos"]:
assert isinstance(constraint["minimum_nb_photos"], int)
assert constraint["minimum_nb_photos"] >= 0
assert "description_should_contain" in constraint
assert isinstance(constraint["description_should_contain"], list)
if constraint["description_should_contain"]:
for term in constraint["description_should_contain"]:
assert isinstance(term, str)
assert "description_should_not_contain" in constraint
assert isinstance(constraint["description_should_not_contain"],
list)
if constraint["description_should_not_contain"]:
for term in constraint["description_should_not_contain"]:
assert isinstance(term, str)
assert "house_types" in constraint
assert constraint["house_types"]
for house_type in constraint["house_types"]:
assert house_type.upper() in HOUSE_TYPES.__members__
assert "postal_codes" in constraint
assert constraint["postal_codes"]
assert all(isinstance(x, str) for x in constraint["postal_codes"])
if check_with_data:
# Ensure data is built into db
data.preprocess_data(config, force=False)
# Check postal codes
opendata_postal_codes = [
x.postal_code
for x in data.load_data(PostalCode, constraint, config)
]
for postal_code in constraint["postal_codes"]:
assert postal_code in opendata_postal_codes # noqa: E501
assert "area" in constraint
_check_constraints_bounds(constraint["area"])
assert "cost" in constraint
_check_constraints_bounds(constraint["cost"])
assert "rooms" in constraint
_check_constraints_bounds(constraint["rooms"])
assert "bedrooms" in constraint
_check_constraints_bounds(constraint["bedrooms"])
assert "time_to" in constraint
assert isinstance(constraint["time_to"], dict)
for name, item in constraint["time_to"].items():
assert isinstance(name, str)
assert "gps" in item
assert isinstance(item["gps"], list)
assert len(item["gps"]) == 2
assert "time" in item
_check_constraints_bounds(item["time"])
if "mode" in item:
TimeToModes[item["mode"]]
return True
except (AssertionError, KeyError):
_, _, exc_traceback = sys.exc_info()
return traceback.extract_tb(exc_traceback)[-1][-1]
def load_config(args=None, check_with_data=True):
"""
Load the configuration from file.
:param args: An argparse args structure.
:param check_with_data: Whether we should use the available OpenData to
check the config values. Defaults to ``True``.
:return: The loaded config dict.
"""
LOGGER.info("Initializing configuration...")
# Default configuration
config_data = DEFAULT_CONFIG.copy()
# Load config from specified JSON
if args and getattr(args, "config", None):
LOGGER.debug("Loading configuration from %s.", args.config)
try:
with open(args.config, "r") as fh:
config_data.update(json.load(fh))
except (IOError, ValueError) as exc:
LOGGER.error(
"Unable to load configuration from file, "
"using default configuration: %s.",
exc
)
# Overload config with arguments
if args and getattr(args, "passes", None) is not None:
LOGGER.debug(
"Overloading number of passes from CLI arguments: %d.",
args.passes
)
config_data["passes"] = args.passes
if args and getattr(args, "max_entries", None) is not None:
LOGGER.debug(
"Overloading maximum number of entries from CLI arguments: %d.",
args.max_entries
)
config_data["max_entries"] = args.max_entries
if args and getattr(args, "port", None) is not None:
LOGGER.debug("Overloading web app port: %d.", args.port)
config_data["port"] = args.port
if args and getattr(args, "host", None) is not None:
LOGGER.debug("Overloading web app host: %s.", args.host)
config_data["host"] = str(args.host)
# Handle data_directory option
if args and getattr(args, "data_dir", None) is not None:
LOGGER.debug("Overloading data directory from CLI arguments.")
config_data["data_directory"] = args.data_dir
elif config_data["data_directory"] is None:
config_data["data_directory"] = appdirs.user_data_dir(
"flatisfy",
"flatisfy"
)
LOGGER.debug("Using default XDG data directory: %s.",
config_data["data_directory"])
if not os.path.isdir(config_data["data_directory"]):
LOGGER.info("Creating data directory according to config: %s",
config_data["data_directory"])
os.makedirs(config_data["data_directory"])
os.makedirs(os.path.join(config_data["data_directory"], "images"))
if config_data["database"] is None:
config_data["database"] = "sqlite:///" + os.path.join(
config_data["data_directory"],
"flatisfy.db"
)
if config_data["search_index"] is None:
config_data["search_index"] = os.path.join(
config_data["data_directory"],
"search_index"
)
# Handle constraints filtering
if args and getattr(args, "constraints", None) is not None:
LOGGER.info(
("Filtering constraints from config according to CLI argument. "
"Using only the following constraints: %s."),
args.constraints.replace(",", ", ")
)
constraints_filter = args.constraints.split(",")
config_data["constraints"] = {
k: v
for k, v in config_data["constraints"].items()
if k in constraints_filter
}
# Sanitize website url
if config_data["website_url"] is not None:
if config_data["website_url"][-1] != '/':
config_data["website_url"] += '/'
config_validation = validate_config(config_data, check_with_data)
if config_validation is True:
LOGGER.info("Config has been fully initialized.")
return config_data
LOGGER.error("Error in configuration: %s.", config_validation)
return None
def init_config(output=None):
"""
Initialize an empty configuration file.
:param output: File to output content to. Defaults to ``stdin``.
"""
config_data = DEFAULT_CONFIG.copy()
if output and output != "-":
with open(output, "w") as fh:
fh.write(tools.pretty_json(config_data))
else:
print(tools.pretty_json(config_data))