skywalking/plugins/sw_urllib3.py

#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You 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
# limitations under the License.
#

from skywalking import Layer, Component
from skywalking.trace import tags
from skywalking.trace.context import get_context
from skywalking.trace.tags import Tag


def install():
    from urllib3.request import RequestMethods

    _request = RequestMethods.request

    def _sw_request(this: RequestMethods, method, url, fields=None, headers=None, **urlopen_kw):

        from urllib.parse import urlparse
        url_param = urlparse(url)
        context = get_context()
        with context.new_exit_span(op=url_param.path or "/", peer=url_param.netloc) as span:
            carrier = span.inject()
            span.layer = Layer.Http
            span.component = Component.Urllib3

            if headers is None:
                headers = {}
            for item in carrier:
                headers[item.key] = item.val

            span.tag(Tag(key=tags.HttpMethod, val=method.upper()))
            span.tag(Tag(key=tags.HttpUrl, val=url))

            res = _request(this, method, url, fields=fields, headers=headers, **urlopen_kw)

            span.tag(Tag(key=tags.HttpStatus, val=res.status, overridable=True))
            if res.status >= 400:
                span.error_occurred = True

            return res

    RequestMethods.request = _sw_request