feat: add cyclone integration

[Kyle-Verhoog]

Integration

This PR adds support for Cyclone.

Links

• Integration docs: http://cyclone.io/
• Corp docs PR:

Checklist

• [x] Usage and configuration documentation added in __init__.py, docs/index.rst and docs/integrations.rst.
• [ ] Corp docs PR to add new integration to documentation.
• [x] Span metadata
  • [x] Service (use int_service or ext_service).
  • [x] Span type should be one of these.
  • [x] Resource
• [x] Global configuration
  • [x] ddtrace.config entry is specified.
  • [x] Environment variables are provided for config options.
• [x] Instance configuration
  • [x] Pin overriding.
  • [x] Service name override (if applicable).
• [x] Async
  • [x] Span parenting behaves as expected.
  • [x] Context propagation across async contexts.
• [x] HTTP
  • [x] Distributed tracing propagation is implemented.
  • [x] Use trace_utils.set_http_meta to set http tags
• [x] Tests
  • [x] Tests are provided for all of the above.
  • [x] Tests are added to CI (.circleci/config.yml).
  • [x] Functionality is maintained from original library.
  • [x] Patch test cases are added (see test_django_patch.py for an example).
  • [x] All Python versions that the library supports are tested.
  • [x] All significant library versions (including the latest) are tested. This typically includes every minor release going back a few years.

This includes support for

• tracing of all requests to the Cyclone framework
• distributed tracing
• header and query string tracing
• error recording

[codecov-io]

Codecov Report

Merging #1642 (6df1ab5) into master (415c5cc) will decrease coverage by 0.98%. The diff coverage is 0.86%.

@@            Coverage Diff             @@
##           master    #1642      +/-   ##
==========================================
- Coverage   83.31%   82.32%   -0.99%     
==========================================
  Files         548      554       +6     
  Lines       37809    38273     +464     
==========================================
+ Hits        31499    31509      +10     
- Misses       6310     6764     +454     

Impacted Files	Coverage Δ
ddtrace/contrib/cyclone/patch.py	0.00% <0.00%> (ø)
ddtrace/internal/context_manager.py	89.18% <ø> (ø)
ddtrace/monkey.py	89.33% <ø> (ø)
tests/contrib/cyclone/client.py	0.00% <0.00%> (ø)
tests/contrib/cyclone/test_cyclone.py	0.00% <0.00%> (ø)
tests/contrib/cyclone/test_cyclone_patch.py	0.00% <0.00%> (ø)
tests/contrib/cyclone/testcase.py	0.00% <0.00%> (ø)
ddtrace/contrib/cyclone/__init__.py	66.66% <66.66%> (ø)
tests/profiling/test_profiler.py	89.26% <0.00%> (-2.02%)	:arrow_down:
ddtrace/profiling/exporter/http.py	95.83% <0.00%> (-1.05%)	:arrow_down:
... and 12 more

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[mergify[bot]]

@Kyle-Verhoog this pull request is now in conflict 😩

[mergify[bot]]

@Kyle-Verhoog this pull request is now in conflict 😩