chore(w3c): avoid setting _dd.parent_id to 16 zeros

[mabdinur]

What does this PR do?

Currently when w3c tracestate headers are extracted by Datadog W3C Propagators:

1. The p value in the tracestate is stored in SpanContext.reparentID.
2. If the p value is not found in the tracestate then SpanContext.reparentID (which will be used to set Span.meta["_dd.parent_id"]) is set to 0000000000000000.

The second condition is no longer required. Datadog internal services no
longer handle the case where Span.meta["_dd.parent_id"] == 0000000000000000. 0000000000000000 is treated as invalid value and ignored. We should avoid setting and handling this value in client libraries.

Motivation

• Simplify the extraction logic for w3c tracecontext headers.
• Avoids unnecessary tags to the Datadog agent.

Plugin Checklist

• Unit tests.
• TypeScript definitions.
• TypeScript tests.
• API documentation.
• CircleCI jobs/workflows.
• Plugin is exported.

Additional Notes

[github-actions]

Overall package size

Self size: 6.98 MB
Deduped: 58.2 MB
No deduping: 58.48 MB

Dependency sizes

| name | version | self size | total size | |------|---------|-----------|------------| | @datadog/native-appsec | 8.0.1 | 15.59 MB | 15.6 MB | | @datadog/native-iast-taint-tracking | 3.1.0 | 12.27 MB | 12.28 MB | | @datadog/pprof | 5.3.0 | 9.85 MB | 10.22 MB | | protobufjs | 7.2.5 | 2.77 MB | 5.16 MB | | @datadog/native-iast-rewriter | 2.4.1 | 2.14 MB | 2.23 MB | | @opentelemetry/core | 1.14.0 | 872.87 kB | 1.47 MB | | @datadog/native-metrics | 2.0.0 | 898.77 kB | 1.3 MB | | @opentelemetry/api | 1.8.0 | 1.21 MB | 1.21 MB | | import-in-the-middle | 1.8.1 | 71.67 kB | 785.15 kB | | msgpack-lite | 0.1.26 | 201.16 kB | 281.59 kB | | opentracing | 0.14.7 | 194.81 kB | 194.81 kB | | pprof-format | 2.1.0 | 111.69 kB | 111.69 kB | | @datadog/sketches-js | 2.1.0 | 109.9 kB | 109.9 kB | | semver | 7.6.3 | 95.82 kB | 95.82 kB | | lodash.sortby | 4.7.0 | 75.76 kB | 75.76 kB | | lru-cache | 7.14.0 | 74.95 kB | 74.95 kB | | ignore | 5.3.1 | 51.46 kB | 51.46 kB | | int64-buffer | 0.1.10 | 49.18 kB | 49.18 kB | | shell-quote | 1.8.1 | 44.96 kB | 44.96 kB | | istanbul-lib-coverage | 3.2.0 | 29.34 kB | 29.34 kB | | tlhunter-sorted-set | 0.1.0 | 24.94 kB | 24.94 kB | | limiter | 1.1.5 | 23.17 kB | 23.17 kB | | dc-polyfill | 0.1.4 | 23.1 kB | 23.1 kB | | retry | 0.13.1 | 18.85 kB | 18.85 kB | | jest-docblock | 29.7.0 | 8.99 kB | 12.76 kB | | crypto-randomuuid | 1.0.0 | 11.18 kB | 11.18 kB | | path-to-regexp | 0.1.7 | 6.78 kB | 6.78 kB | | koalas | 1.0.2 | 6.47 kB | 6.47 kB | | module-details-from-path | 1.0.3 | 4.47 kB | 4.47 kB |

_{🤖 This report was automatically generated by heaviest-objects-in-the-universe}

[pr-commenter]

Benchmarks

Benchmark execution time: 2024-08-06 23:44:33

Comparing candidate commit 272cbd5f283ba860b2b41b40867c0b40e3a9ddfd in PR branch munir/remove-16-zeros with baseline commit ed9b0b3 in branch master.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 263 metrics, 3 unstable metrics.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.63%. Comparing base (f82c6d5) to head (272cbd5).
Report is 11 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4576      +/-   ##
==========================================
+ Coverage   63.02%   68.63%   +5.60%     
==========================================
  Files         254       13     -241     
  Lines       11095      982   -10113     
  Branches       33       33              
==========================================
- Hits         6993      674    -6319     
+ Misses       4102      308    -3794     

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[khanayan123]

Just need to pass tests but otherwise LGTM