fix(swoole): gate post body parsing on allowed post params

[bwoebi]

Motivation

• The Swoole request hook unconditionally called $request->rawContent() and json_decode() then normalized and added every parsed POST parameter name to span metadata even when DD_TRACE_HTTP_POST_DATA_PARAM_ALLOWED is empty, allowing unauthenticated clients to force expensive parsing and metadata growth.
• The change aligns Swoole behavior with the existing guarded serializer path that only processes POST fields when the allowlist has entries.

Description

• Add a guard in SwooleIntegration::instrumentRequestStart() so request body reading and decoding only runs when DD_TRACE_HTTP_POST_DATA_PARAM_ALLOWED is non-empty (changed file: src/DDTrace/Integrations/Swoole/SwooleIntegration.php).
• Preserve the existing Normalizer::sanitizePostFields() and metadata-writing behavior when POST parameter capture is explicitly enabled.

Testing

• Ran php -l src/DDTrace/Integrations/Swoole/SwooleIntegration.php to validate syntax, which succeeded.

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Codex Task

[datadog-datadog-prod-us1]

 

✨ Fix all issues with BitsAI

⚠️ Warnings

🚦 4 Pipeline jobs failed

DataDog/apm-reliability/dd-trace-php | Loader test on arm64 libc: [7.3, nts]     

🔧 Fix in code (Fix with Cursor).

1 failed test. Error: Cannot assert "" contains "{\"name\":\"instrumentation_source\",\"value\":\"ssi\",\"origin\":\"default\",\"config_id\":null,\"seq_id\":null}" in test_configuration_telemetry.php:22.

DataDog/apm-reliability/dd-trace-php | test_extension_ci: [8.1]     

🔧 Fix in code (Fix with Cursor).

Assertion failed: A non-numeric value encountered in /go/src/github.com/DataDog/apm-reliability/dd-trace-php/tmp/build_extension/run-tests.php on line 3616

DataDog/apm-reliability/dd-trace-php | test early PHP 8.1     

🔄 Retry job. This looks flaky and may succeed on retry.

1 failed test. Error: Failed to connect to master listener: Connection refused (os error 111) at tests/ext/pcntl/pcntl_fork_thread_mode_orphan.phpt.

View all 4 failed jobs.

ℹ️ Info

No other issues found (see more)

🧪 All tests passed
❄️ No new flaky tests detected

🎯 Code Coverage (details)
• Patch Coverage: 100.00%
• Overall Coverage: 60.71% (-0.04%)

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