chore(config): migrate APM stats transform to typed configuration

[webern]

Human Summary

TODO: human writes here

AI Summary

Migrate the APM Stats transform to the resolved typed traces configuration. The transform now receives typed stats, peer-tag, environment, and hostname inputs, and the legacy APM configuration adapter is removed.

Change Type

• Non-functional (chore, refactoring, docs)

How did you test this PR?

• make fmt
• make check-docs
• make check-clippy
• make check-all
• APM Stats tests: 38 passed
• cargo check -p saluki-components -p agent-data-plane --tests

References

• Progresses: chore(config): migrate OTTL transform to typed configuration #2263

[webern]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• chore(config): migrate APM stats encoder to typed configuration #2266
• chore(config): migrate APM stats transform to typed configuration #2265 👈 (View in Graphite)
• chore(config): migrate OTTL transform to typed configuration #2263
• chore(config): migrate OTTL filter to typed configuration #2262
• chore(config): migrate trace obfuscation to typed configuration #2261
• chore(config): use typed OTLP traces configuration #2260
• chore(config): migrate trace sampler to typed configuration #2191
• chore(config): migrate datadog trace encoder to typed configuration #2187
• main

This stack of pull requests is managed by Graphite. Learn more about stacking.

[pr-commenter]

Binary Size Analysis (Agent Data Plane)

Baseline: 2d270c1 · Comparison: 4c227d5 · diff
Analysis Configuration: stripped binaries · Pass/Fail Threshold: +5%
Sizes: 41.82 MiB (baseline) vs 41.13 MiB (comparison)
Size Change: -705.33 KiB (-1.65%)

✅ Binary size difference within threshold

Changes by Module

Module	File Size	Symbols
core	-245.20 KiB	3361
figment	-148.43 KiB	288
tokio	-59.13 KiB	1666
tonic	-38.57 KiB	258
tracing	-34.89 KiB	36
serde_json	-34.54 KiB	148
serde_core	-33.25 KiB	340
alloc	+31.93 KiB	773
saluki_components::common::datadog	-28.90 KiB	141
anyhow	-23.40 KiB	457
agent_data_plane::dogstatsd_contexts::artifact	+23.00 KiB	8
hyper_util	+22.06 KiB	52
serde_with	+21.18 KiB	21
saluki_components::encoders::datadog	-17.99 KiB	123
anon.9e10e783874537ee9cd42874176db3c6.646.llvm.8877288998599751260	+17.62 KiB	1
anon.fa87d97bf7a1e75a11dd00a2292fd8f4.4.llvm.8030827437847718592	-17.62 KiB	1
agent_data_plane::internal::remote_agent	-17.25 KiB	20
saluki_common::cache::CacheBuilder<K,V,W,H>	+16.39 KiB	6
piecemeal	-15.79 KiB	24
prost	-15.42 KiB	199

Detailed Symbol Changes

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  [NEW] +32.7Ki  [NEW] +32.5Ki    agent_data_plane::internal::env::workload::RemoteAgentWorkloadProvider::from_configuration::_{{closure}}::h273918a7d610bdfa
  +257% +20.8Ki  +262% +20.8Ki    _<figment::value::de::ConfiguredValueDe<I> as serde_core::de::Deserializer>::deserialize_struct::h8152b7ae42bbdf3b
  +260% +19.1Ki  +266% +19.1Ki    _<figment::value::de::ConfiguredValueDe<I> as serde_core::de::Deserializer>::deserialize_struct::h620744619ca067ad
  +260% +19.1Ki  +266% +19.1Ki    _<figment::value::de::ConfiguredValueDe<I> as serde_core::de::Deserializer>::deserialize_struct::ha466ba9027a7db13
  +300% +18.6Ki  +308% +18.6Ki    _<figment::value::de::ConfiguredValueDe<I> as serde_core::de::Deserializer>::deserialize_struct::ha14640b20f74d1e4
  [NEW] +17.6Ki  [NEW]     +76    anon.9e10e783874537ee9cd42874176db3c6.646.llvm.8877288998599751260
  [NEW] +16.5Ki  [NEW] +16.4Ki    _<core::future::poll_fn::PollFn<F> as core::future::future::Future>::poll::ha97d3fe01c901fc7
 +34e2% +16.5Ki +44e2% +16.5Ki    agent_data_plane::state::metrics::rules::get_datadog_agent_remappings::h3bca9f6cd9d0a449
  +236% +16.3Ki  +241% +16.3Ki    _<figment::value::de::ConfiguredValueDe<I> as serde_core::de::Deserializer>::deserialize_struct::h70e2afbf0bb450d6
 +13e2% +15.9Ki +17e2% +15.9Ki    _<agent_data_plane::internal::remote_agent::RemoteAgentImpl as datadog_protos::agent_include::datadog::remoteagent::flare::v1::flare_provider_server::FlareProvider>::get_flare_files::_{{closure}}::ha8a04fa805ff7c04
  +275% +15.7Ki  +283% +15.7Ki    _<figment::value::de::ConfiguredValueDe<I> as serde_core::de::Deserializer>::deserialize_struct::h1be15f59da19991b
  [NEW] +15.5Ki  [NEW] +15.3Ki    _<figment::value::de::ConfiguredValueDe<I> as serde_core::de::Deserializer>::deserialize_any::h9c01161bf3a4a364
  [DEL] -15.6Ki  [DEL] -15.5Ki    _<core::marker::PhantomData<T> as serde_core::de::DeserializeSeed>::deserialize::he38aa0c38e4b4c3e
 -73.0% -16.3Ki -73.4% -16.3Ki    h2::proto::connection::DynConnection<B>::recv_frame::h09d92c074afb400d
 -92.2% -16.4Ki -93.5% -16.4Ki    _<agent_data_plane::internal::remote_agent::RemoteAgentEventReporter as saluki_core::runtime::supervisor::Supervisable>::initialize::_{{closure}}::_{{closure}}::hc726395b4ae2250d
  [DEL] -16.8Ki  [DEL] -16.6Ki    saluki_components::common::datadog::config::_::_<impl serde_core::de::Deserialize for saluki_components::common::datadog::config::ForwarderConfiguration>::deserialize::h046e329b1d5a075e
  [DEL] -17.6Ki  [DEL] -17.4Ki    agent_data_plane::internal::remote_agent::RemoteAgentImpl::session_id_middleware::_{{closure}}::h892c483d47a44569
  [DEL] -17.6Ki  [DEL]     -76    anon.fa87d97bf7a1e75a11dd00a2292fd8f4.4.llvm.8030827437847718592
  [DEL] -19.8Ki  [DEL] -19.7Ki    agent_data_plane::internal::env::workload::build_collector::_{{closure}}::hfecfe48366f575fc
  [DEL] -20.8Ki  [DEL] -20.7Ki    agent_data_plane::internal::env::ADPEnvironmentProvider::from_configuration::_{{closure}}::h7ebb2aaa45919761
  -4.8%  -788Ki  -5.0%  -671Ki    [18316 Others]
  -1.6%  -705Ki  -1.6%  -587Ki    TOTAL

[pr-commenter]

Regression Detector (Agent Data Plane)

Run ID: 640d7a06-c33d-4ec1-8b7c-2de2ff0c11f7
Baseline: 2d270c1f · Comparison: 4c227d57 · diff

Optimization Goals: ✅ No significant changes detected

Fine details of change detection per experiment (5)

Experiments configured erratic: true are tagged (ignored) and skipped when determining which experiments regressed or improved. Experiments which are detected as erratic at runtime are tagged (erratic) to flag that the run's sample dispersion was high, but their regression / improvement signal still counts.

experiment	goal	Δ mean %	links
quality_gates_rss_dsd_ultraheavy	memory	⚪ +0.19	metrics profiles logs
quality_gates_rss_dsd_heavy	memory	⚪ -0.11	metrics profiles logs
quality_gates_rss_dsd_medium	memory	⚪ -0.38	metrics profiles logs
quality_gates_rss_dsd_low	memory	⚪ -0.45	metrics profiles logs
quality_gates_rss_idle	memory	⚪ -0.90	metrics profiles logs

Bounds Checks: ✅ Passed (5)

experiment	check	replicates	observed	links
quality_gates_rss_dsd_heavy	memory_usage	10/10	✅ 140 MiB ≤ 145 MiB	metrics profiles logs
quality_gates_rss_dsd_low	memory_usage	10/10	✅ 49.3 MiB ≤ 50 MiB	metrics profiles logs
quality_gates_rss_dsd_medium	memory_usage	10/10	✅ 75.7 MiB ≤ 80 MiB	metrics profiles logs
quality_gates_rss_dsd_ultraheavy	memory_usage	10/10	✅ 203 MiB ≤ 205 MiB	metrics profiles logs
quality_gates_rss_idle	memory_usage	10/10	✅ 31.8 MiB ≤ 40 MiB	metrics profiles logs

Explanation

A change is flagged as a regression when |Δ mean %| > 5.00% in the regressing direction for its optimization goal AND SMP marks the experiment as a regression (is_regression: true). Improvements use the matching criteria for the improving direction. Experiments configured erratic: true (tagged (ignored)) are skipped outright; experiments detected as erratic at runtime (tagged (erratic)) still count, since that flag describes sample dispersion rather than directional certainty. The Δ mean % cell is colored accordingly: 🟢 = improvement, 🔴 = regression, ⚪ = neutral. Reduction in CPU or memory is an improvement; reduction in ingress throughput is a regression.