| # |
| # 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, config |
| from skywalking.trace.carrier import Carrier |
| from skywalking.trace.context import get_context, NoopContext |
| from skywalking.trace.span import NoopSpan |
| from skywalking.trace.tags import TagHttpMethod, TagHttpURL, TagHttpParams, TagHttpStatusCode, TagHttpStatusMsg |
| |
| link_vector = ['https://falcon.readthedocs.io/en/stable/'] |
| support_matrix = { |
| 'hug': { |
| '>=3.11': [], |
| '>=3.10': ['2.5', '2.6'], # api deprecated for 3.10 |
| '>=3.7': ['2.4.1', '2.5', '2.6'], # support begins 2.4.1 |
| } |
| } |
| note = """While Falcon is instrumented, only Hug is tested. |
| Hug is believed to be abandoned project, use this plugin with a bit more caution. |
| Instead of Hug, plugin test should move to test actual Falcon.""" |
| |
| |
| def install(): |
| from falcon import API, request, RequestOptions |
| |
| _original_falcon_api = API.__call__ |
| |
| def _sw_falcon_api(this: API, env, start_response): |
| context = get_context() |
| carrier = Carrier() |
| req = request.Request(env, RequestOptions()) |
| headers = req.headers |
| method = req.method |
| |
| for item in carrier: |
| key = item.key.upper() |
| if key in headers: |
| item.val = headers[key] |
| |
| span = NoopSpan(NoopContext()) if config.ignore_http_method_check(method) \ |
| else context.new_entry_span(op=req.path, carrier=carrier) |
| |
| with span: |
| span.layer = Layer.Http |
| span.component = Component.Falcon |
| span.peer = req.remote_addr |
| |
| span.tag(TagHttpMethod(method)) |
| span.tag(TagHttpURL(str(req.url))) |
| |
| if req.params: |
| span.tag(TagHttpParams(','.join([f'{k}={v}' for k, v in req.params.items()]))) |
| |
| def _start_response(resp_status, headers): |
| try: |
| code, msg = resp_status.split(' ', 1) |
| code = int(code) |
| except Exception: |
| code, msg = 500, 'Internal Server Error' |
| |
| if code >= 400: |
| span.error_occurred = True |
| |
| span.tag(TagHttpStatusCode(code)) |
| span.tag(TagHttpStatusMsg(msg)) |
| |
| return start_response(resp_status, headers) |
| |
| try: |
| return _original_falcon_api(this, env, _start_response) |
| |
| except Exception: |
| span.raised() |
| |
| raise |
| |
| API.__call__ = _sw_falcon_api |