diff options
Diffstat (limited to 'talerdonations/helpers.py')
-rw-r--r-- | talerdonations/helpers.py | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/talerdonations/helpers.py b/talerdonations/helpers.py deleted file mode 100644 index 614e463..0000000 --- a/talerdonations/helpers.py +++ /dev/null @@ -1,101 +0,0 @@ -# This file is part of TALER -# (C) 2016 INRIA -# -# TALER is free software; you can redistribute it and/or modify it under the -# terms of the GNU Affero General Public License as published by the Free Software -# Foundation; either version 3, or (at your option) any later version. -# -# TALER is distributed in the hope that it will be useful, but WITHOUT ANY -# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR -# A PARTICULAR PURPOSE. See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License along with -# TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/> -# -# @author Florian Dold -# @author Marcello Stanisci - -from urllib.parse import urljoin, urlencode -import logging -import json -import flask -from .talerconfig import TalerConfig - -LOGGER = logging.getLogger(__name__) - -TC = TalerConfig.from_env() -BACKEND_URL = TC["frontends"]["backend"].value_string(required=True) -NDIGITS = TC["frontends"]["NDIGITS"].value_int() -CURRENCY = TC["taler"]["CURRENCY"].value_string() - -FRACTION_BASE = 1e8 - -if not NDIGITS: - NDIGITS = 2 - -class MissingParameterException(Exception): - def __init__(self, param): - self.param = param - super().__init__() - -def amount_to_float(amount): - return amount['value'] + (float(amount['fraction']) / float(FRACTION_BASE)) - - -def amount_from_float(floatx): - value = int(floatx) - fraction = int((floatx - value) * FRACTION_BASE) - return dict(currency=CURRENCY, value=value, fraction=fraction) - - -def join_urlparts(*parts): - ret = "" - part = 0 - while part < len(parts): - buf = parts[part] - part += 1 - if ret.endswith("/"): - buf = buf.lstrip("/") - elif ret and not buf.startswith("/"): - buf = "/" + buf - ret += buf - return ret - - -def make_url(page, *query_params): - """ - Return a URL to a page in the current Flask application with the given - query parameters (sequence of key/value pairs). - """ - query = urlencode(query_params) - if page.startswith("/"): - root = flask.request.url_root - page = page.lstrip("/") - else: - root = flask.request.base_url - url = urljoin(root, "%s?%s" % (page, query)) - # urlencode is overly eager with quoting, the wallet right now - # needs some characters unquoted. - return url.replace("%24", "$").replace("%7B", "{").replace("%7D", "}") - - -def expect_parameter(name, alt=None): - value = flask.request.args.get(name, None) - if value is None and alt is None: - LOGGER.error("Missing parameter '%s' from '%s'." % (name, flask.request.args)) - raise MissingParameterException(name) - return value if value else alt - - -def get_query_string(): - return flask.request.query_string - -def backend_error(requests_response): - LOGGER.error("Backend error: status code: " - + str(requests_response.status_code)) - try: - return flask.jsonify(requests_response.json()), requests_response.status_code - except json.decoder.JSONDecodeError: - LOGGER.error("Backend error (NO JSON returned): status code: " - + str(requests_response.status_code)) - return flask.jsonify(dict(error="Backend died, no JSON got from it")), 502 |