Source code for lb.blocks.http

# Copyright 2017 The Lambda-blocks developers. See AUTHORS for details.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
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"""
This module contains blocks for performing HTTP operations.
"""

import urllib.request

from lb.registry import block
from lb.types import ReturnType
from lb.utils import ReturnEntry

[docs]@block(engine='http') def read_http(url: str='', encoding: str='utf8'): """Performs an HTTP GET request, and returns its result. :param str url: The requested URL. :param str encoding: How the result should be decoded. :output str result: The content returned by the request. """ def inner() -> ReturnType[str]: with urllib.request.urlopen(url) as response: data = response.read().decode(encoding) return ReturnEntry(result=data) return inner