remove logic that uses import importlib_metadata

[chojomok]

Checklist

• PR author has checked that all the criteria below are met
• The PR description includes an overview of the change
• The PR description articulates the motivation for the change
• The change includes tests OR the PR description describes a testing strategy
• The PR description notes risks associated with the change, if any
• Newly-added code is easy to change
• The change follows the library release note guidelines
• The change includes or references documentation updates if necessary
• Backport labels are set (if applicable)

Reviewer Checklist

• Reviewer has checked that all the criteria below are met
• Title is accurate
• All changes are related to the pull request's stated goal
• Avoids breaking API changes
• Testing strategy adequately addresses listed risks
• Newly-added code is easy to change
• Release note makes sense to a user of the library
• If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment
• Backport labels are set in a manner that is consistent with the release branch maintenance policy

[github-actions]

CODEOWNERS have been resolved as:

ddtrace/contrib/internal/elasticsearch/patch.py                         @DataDog/apm-core-python @DataDog/apm-idm-python
ddtrace/contrib/internal/pyramid/patch.py                               @DataDog/apm-core-python @DataDog/apm-idm-python
ddtrace/contrib/internal/pytest_bdd/patch.py                            @DataDog/ci-app-libraries
ddtrace/internal/gitmetadata.py                                         @DataDog/apm-core-python
ddtrace/internal/packages.py                                            @DataDog/apm-core-python
ddtrace/internal/products.py                                            @DataDog/apm-core-python
tests/appsec/integrations/flask_tests/utils.py                          @DataDog/asm-python
tests/contrib/integration_registry/registry_update_helpers/integration_registry_manager.py  @DataDog/apm-core-python @DataDog/apm-idm-python
tests/utils.py                                                          @DataDog/python-guild

[github-actions]

Bootstrap import analysis

Comparison of import times between this PR and base.

Summary

The average import time from this PR is: 188 ± 5 ms.

The average import time from base is: 284 ± 8 ms.

The import time difference between this PR and base is: -95.8 ± 0.3 ms.

Import time breakdown

The following import paths have disappeared:

ddtrace.auto 46.135 ms (24.50%)

ddtrace.bootstrap.sitecustomize 46.135 ms (24.50%)

ddtrace.bootstrap.preload 31.092 ms (16.51%)

ddtrace.internal.remoteconfig.client 7.305 ms (3.88%)

ddtrace.internal.remoteconfig.constants 0.249 ms (0.13%)

ddtrace.internal.symbol_db.remoteconfig 4.280 ms (2.27%)

ddtrace.internal.symbol_db.symbols 3.053 ms (1.62%)

ddtrace.settings.symbol_db 0.414 ms (0.22%)

multiprocessing 3.783 ms (2.01%)

multiprocessing.context 3.461 ms (1.84%)

multiprocessing.reduction 2.269 ms (1.20%)

pickle 1.838 ms (0.98%)

_compat_pickle 0.448 ms (0.24%)

_pickle 0.397 ms (0.21%)

multiprocessing.process 0.459 ms (0.24%)

multiprocessing.sharedctypes 2.620 ms (1.39%)

multiprocessing.heap 1.931 ms (1.03%)

mmap 1.135 ms (0.60%)

multiprocessing.util 0.422 ms (0.22%)

ddtrace.internal.remoteconfig._connectors 2.449 ms (1.30%)

ctypes 2.057 ms (1.09%)

_ctypes 0.655 ms (0.35%)

ctypes._endian 0.440 ms (0.23%)

ddtrace.internal.flare.flare 2.253 ms (1.20%)

logging.handlers 0.838 ms (0.44%)

ddtrace.internal.flare 0.278 ms (0.15%)

ddtrace.appsec._remoteconfiguration 2.211 ms (1.17%)

ddtrace.appsec._capabilities 0.952 ms (0.51%)

ddtrace.debugging._import 1.653 ms (0.88%)

ddtrace.debugging._function.discovery 1.307 ms (0.69%)

ddtrace.debugging._function 0.263 ms (0.14%)

ddtrace.settings.dynamic_instrumentation 0.798 ms (0.42%)

ddtrace.internal.utils.config 0.242 ms (0.13%)

ddtrace.internal.remoteconfig._pubsub 0.662 ms (0.35%)

ddtrace.internal.remoteconfig._subscribers 0.348 ms (0.18%)

ddtrace.debugging._config 0.565 ms (0.30%)

ddtrace.settings.exception_replay 0.322 ms (0.17%)

ddtrace.internal.remoteconfig.worker 0.483 ms (0.26%)

ddtrace.settings.code_origin 0.404 ms (0.21%)

ddtrace.settings.errortracking 0.351 ms (0.19%)

ddtrace.internal.remoteconfig._publishers 0.346 ms (0.18%)

ddtrace.internal.flare._subscribers 0.312 ms (0.17%)

ddtrace.internal.flare.handler 0.311 ms (0.17%)

ddtrace.settings.live_debugging 0.308 ms (0.16%)

ddtrace._trace.trace_handlers 9.913 ms (5.26%)

ddtrace.contrib.trace_utils 3.933 ms (2.09%)

ddtrace.contrib.internal.trace_utils 1.799 ms (0.96%)

ddtrace.contrib.internal.trace_utils_base 0.866 ms (0.46%)

ddtrace.ext.user 0.332 ms (0.18%)

ddtrace.internal.utils.wrappers 0.380 ms (0.20%)

ddtrace.contrib.internal.redis_utils 1.273 ms (0.68%)

ddtrace.contrib.internal 0.366 ms (0.19%)

ddtrace.ext.redis 0.339 ms (0.18%)

ddtrace.contrib.internal.trace_utils_async 0.369 ms (0.20%)

ddtrace._trace._inferred_proxy 3.226 ms (1.71%)

ddtrace.propagation.http 2.709 ms (1.44%)

ddtrace.internal._tagset 0.556 ms (0.30%)

ddtrace.propagation._utils 0.370 ms (0.20%)

ddtrace.propagation 0.346 ms (0.18%)

ddtrace.contrib.internal.botocore.constants 0.755 ms (0.40%)

ddtrace.contrib.internal.botocore 0.354 ms (0.19%)

ddtrace.ext.db 0.404 ms (0.21%)

ddtrace._trace.utils 0.347 ms (0.18%)

ddtrace.ext.azure_servicebus 0.316 ms (0.17%)

ddtrace.appsec._common_module_patches 4.162 ms (2.21%)

ddtrace.appsec._asm_request_context 2.768 ms (1.47%)

ddtrace.appsec._utils 1.518 ms (0.81%)

ddtrace.internal._exceptions 0.371 ms (0.20%)

ddtrace.appsec._metrics 0.876 ms (0.47%)

ddtrace.appsec._deduplications 0.394 ms (0.21%)

shlex 0.502 ms (0.27%)

ddtrace.contrib.internal.subprocess.constants 0.467 ms (0.25%)

The following import paths have grown:

ddtrace.auto 0.209 ms (0.11%)

ddtrace.bootstrap.sitecustomize 0.209 ms (0.11%)

ddtrace.bootstrap.preload 0.209 ms (0.11%)

ddtrace.internal.products 0.134 ms (0.07%)

importlib.metadata 0.134 ms (0.07%)

importlib.abc 0.134 ms (0.07%)

importlib.resources 0.072 ms (0.04%)

ddtrace.internal.runtime.runtime_metrics 0.075 ms (0.04%)

The following import paths have shrunk:

ddtrace.auto 48.137 ms (25.56%)

ddtrace.bootstrap.sitecustomize 47.487 ms (25.21%)

ddtrace.bootstrap.preload 43.337 ms (23.01%)

ddtrace.internal.core.crashtracking 29.654 ms (15.75%)

ddtrace.internal.products 0.145 ms (0.08%)

importlib.metadata 0.145 ms (0.08%)

importlib.abc 0.081 ms (0.04%)

importlib.resources 0.081 ms (0.04%)

importlib.resources._legacy 0.081 ms (0.04%)

importlib.metadata._itertools 0.064 ms (0.03%)

ddtrace.internal.runtime.runtime_metrics 0.092 ms (0.05%)

ddtrace.internal.runtime.tag_collectors 0.092 ms (0.05%)

sitecustomize 0.121 ms (0.06%)

ddtrace 0.650 ms (0.35%)

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-07-01 21:57:09

Comparing candidate commit 7b64179 in PR branch mohammad/update_importlib_metadata with baseline commit 5175caa in branch main.

Found 46 performance improvements and 0 performance regressions! Performance is the same for 441 metrics, 3 unstable metrics.

scenario:djangosimple-appsec

• 🟩 execution_time [-7.181ms; -7.047ms] or [-33.335%; -32.712%]
• 🟩 max_rss_usage [-13.192MB; -12.995MB] or [-20.671%; -20.362%]

scenario:djangosimple-exception-replay-enabled

• 🟩 execution_time [-818.718µs; -803.418µs] or [-60.206%; -59.081%]
• 🟩 max_rss_usage [-14.106MB; -13.852MB] or [-22.296%; -21.893%]

scenario:djangosimple-iast

• 🟩 execution_time [-7.326ms; -7.188ms] or [-33.935%; -33.300%]
• 🟩 max_rss_usage [-13.124MB; -12.907MB] or [-20.583%; -20.243%]

scenario:djangosimple-span-code-origin

• 🟩 execution_time [-13.082ms; -12.964ms] or [-47.926%; -47.493%]
• 🟩 max_rss_usage [-15.331MB; -15.111MB] or [-23.234%; -22.900%]

scenario:djangosimple-tracer

• 🟩 execution_time [-7.128ms; -7.000ms] or [-33.185%; -32.588%]
• 🟩 max_rss_usage [-13.163MB; -12.945MB] or [-20.651%; -20.309%]

scenario:djangosimple-tracer-and-profiler

• 🟩 execution_time [-8.299ms; -8.131ms] or [-34.573%; -33.875%]
• 🟩 max_rss_usage [-13.102MB; -12.772MB] or [-20.108%; -19.602%]

scenario:djangosimple-tracer-no-caches

• 🟩 execution_time [-4.703ms; -4.605ms] or [-24.824%; -24.306%]
• 🟩 max_rss_usage [-13.129MB; -12.979MB] or [-20.598%; -20.362%]

scenario:djangosimple-tracer-no-databases

• 🟩 execution_time [-5.209ms; -5.096ms] or [-26.887%; -26.304%]
• 🟩 max_rss_usage [-13.129MB; -12.901MB] or [-20.578%; -20.221%]

scenario:djangosimple-tracer-no-middleware

• 🟩 execution_time [-7.061ms; -6.944ms] or [-33.159%; -32.609%]
• 🟩 max_rss_usage [-13.050MB; -12.861MB] or [-20.468%; -20.172%]

scenario:djangosimple-tracer-no-templates

• 🟩 execution_time [-7.124ms; -7.002ms] or [-33.335%; -32.766%]
• 🟩 max_rss_usage [-13.223MB; -12.995MB] or [-20.734%; -20.377%]

scenario:errortrackingdjangosimple-errortracking-enabled-all

• 🟩 execution_time [-4.650ms; -4.533ms] or [-25.066%; -24.433%]
• 🟩 max_rss_usage [-13.070MB; -12.872MB] or [-20.501%; -20.189%]

scenario:errortrackingdjangosimple-errortracking-enabled-user

• 🟩 execution_time [-4.661ms; -4.561ms] or [-25.080%; -24.542%]
• 🟩 max_rss_usage [-13.205MB; -12.974MB] or [-20.724%; -20.363%]

scenario:errortrackingdjangosimple-tracer-enabled

• 🟩 execution_time [-4.557ms; -4.440ms] or [-24.443%; -23.818%]
• 🟩 max_rss_usage [-13.279MB; -13.048MB] or [-20.798%; -20.436%]

scenario:errortrackingflasksqli-errortracking-enabled-all

• 🟩 execution_time [-1.480ms; -1.472ms] or [-68.818%; -68.442%]
• 🟩 max_rss_usage [-7.915MB; -7.695MB] or [-15.408%; -14.979%]

scenario:errortrackingflasksqli-errortracking-enabled-user

• 🟩 execution_time [-1.476ms; -1.468ms] or [-68.636%; -68.256%]
• 🟩 max_rss_usage [-7.866MB; -7.666MB] or [-15.311%; -14.923%]

scenario:errortrackingflasksqli-tracer-enabled

• 🟩 execution_time [-1.477ms; -1.470ms] or [-68.804%; -68.487%]
• 🟩 max_rss_usage [-7.891MB; -7.680MB] or [-15.360%; -14.950%]

scenario:flasksimple-appsec-get

• 🟩 execution_time [-2.779ms; -2.768ms] or [-59.954%; -59.716%]
• 🟩 max_rss_usage [-16.111MB; -15.884MB] or [-26.026%; -25.659%]

scenario:flasksimple-appsec-post

• 🟩 execution_time [-4.711ms; -4.697ms] or [-75.277%; -75.065%]
• 🟩 max_rss_usage [-16.109MB; -15.883MB] or [-26.023%; -25.658%]

scenario:flasksimple-appsec-telemetry

• 🟩 execution_time [-2.788ms; -2.774ms] or [-60.036%; -59.737%]
• 🟩 max_rss_usage [-16.119MB; -15.875MB] or [-26.090%; -25.695%]

scenario:flasksimple-tracer

• 🟩 execution_time [-1.567ms; -1.555ms] or [-45.769%; -45.430%]
• 🟩 max_rss_usage [-7.879MB; -7.771MB] or [-15.302%; -15.091%]

scenario:flasksqli-appsec-enabled

• 🟩 execution_time [-3.325ms; -3.312ms] or [-83.426%; -83.114%]
• 🟩 max_rss_usage [-16.466MB; -16.250MB] or [-26.478%; -26.130%]

scenario:flasksqli-iast-enabled

• 🟩 execution_time [-1.951ms; -1.925ms] or [-74.898%; -73.892%]
• 🟩 max_rss_usage [-8.426MB; -8.246MB] or [-14.881%; -14.563%]

scenario:flasksqli-tracer-enabled

• 🟩 execution_time [-1.474ms; -1.467ms] or [-68.910%; -68.565%]
• 🟩 max_rss_usage [-7.902MB; -7.669MB] or [-15.394%; -14.939%]