Sandbox::https://github.com/dotnet/SqlClient/pull/4852

paulmedynski · 2026-10-16T13:14:56Z

Description

Localize authentication diagnostics using resources owned by Microsoft.Data.SqlClient.Extensions.Abstractions, without depending on the driver's resource helpers or loading the driver to format an error.

Implementation

Add the internal AuthenticationStrings helper and resource-backed exception factories.
Move five existing authentication resource keys, with neutral English and 13 translated cultures, from the driver to Abstractions. These translations are not newly introduced localization.
Add eight additional neutral-English resource messages. Untranslated messages fall back to neutral English.
Replace six hard-coded exception-construction sites in authentication configuration and registration with resource-backed factories, retaining their exception types.
Select resources with CurrentUICulture and format arguments with CurrentCulture, including parent-culture and neutral-resource fallback.
Trace recoverable resource lookup/formatting failures and return a diagnostic fallback containing the resource key and argument values. Unformattable arguments use a type-name placeholder; fatal exceptions propagate.
Set explicit embedded-resource names, remove relocated driver resource entries and generated internal accessors, document the behavior, and add regression tests.

Public API and compatibility

No breaking public API surface changes and no new or changed public declarations. No public/protected types, constructors, methods, properties, signatures, type forwards, or reference-assembly declarations are added, removed, or changed. AuthenticationStrings and its factories are internal.

There are observable diagnostic behavior changes:

Area	Change relative to the target branch
Authentication error messages	The affected paths use resource-backed messages instead of temporary hard-coded English text. Wording can change even in English; translated cultures now receive the applicable Abstractions satellite message. This can affect EventSource traces containing those exceptions.
Localization failure handling	The new formatter traces recoverable missing-resource or formatting failures and produces a key-and-arguments fallback rather than letting those failures replace the diagnostic. Fatal errors are not converted to fallback messages.
Resource ownership/deployment	The moved messages are resolved from Abstractions and its satellite assemblies rather than driver resources. Deployment or custom resource tooling must account for the new owning assembly.

These are diagnostic behavior changes, not a change to the authentication contract. Consumers or tests that match exact exception/trace text or inspect internal resource names may need adjustment.

Issues

No separate issue is linked.

Testing

Copilot

🔵 Needs a closer look

CI validation remains incomplete, and this extraction lacks rerun .NET Framework and trimmed/NativeAOT runtime validation.

0 open findings

What changed in this PR

Moves authentication error localization into Abstractions following #4821, without changing public APIs.

Changes:

Replaces six placeholder exceptions with resource-backed factories and resilient message formatting.
Relocates five messages across neutral English and 13 translated cultures.
Adds localization, fallback, diagnostic, and exception-preservation tests and documentation.

File	Description
src/Microsoft.Data.SqlClient/src/Resources/Strings.zh-Hant.resx	Removes relocated Traditional Chinese messages.
src/Microsoft.Data.SqlClient/src/Resources/Strings.zh-Hans.resx	Removes relocated Simplified Chinese messages.
src/Microsoft.Data.SqlClient/src/Resources/Strings.tr.resx	Removes relocated Turkish messages.
src/Microsoft.Data.SqlClient/src/Resources/Strings.ru.resx	Removes relocated Russian messages.
src/Microsoft.Data.SqlClient/src/Resources/Strings.resx	Removes relocated neutral messages.
src/Microsoft.Data.SqlClient/src/Resources/Strings.pt-BR.resx	Removes relocated Brazilian Portuguese messages.
src/Microsoft.Data.SqlClient/src/Resources/Strings.pl.resx	Removes relocated Polish messages.
src/Microsoft.Data.SqlClient/src/Resources/Strings.ko.resx	Removes relocated Korean messages.
src/Microsoft.Data.SqlClient/src/Resources/Strings.ja.resx	Removes relocated Japanese messages.
src/Microsoft.Data.SqlClient/src/Resources/Strings.it.resx	Removes relocated Italian messages.
src/Microsoft.Data.SqlClient/src/Resources/Strings.fr.resx	Removes relocated French messages.
src/Microsoft.Data.SqlClient/src/Resources/Strings.es.resx	Removes relocated Spanish messages.
src/Microsoft.Data.SqlClient/src/Resources/Strings.Designer.cs	Removes relocated resource accessors.
src/Microsoft.Data.SqlClient/src/Resources/Strings.de.resx	Removes relocated German messages.
src/Microsoft.Data.SqlClient/src/Resources/Strings.cs.resx	Removes relocated Czech messages.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/test/AzureProviderConstructionTest.cs	Checks broker error details.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/test/AuthenticationStringsTest.cs	Tests localization, fallbacks, diagnostics, and causes.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/SqlAuthenticationProviderRegistry.cs	Uses localized exception factories.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/Resources/Strings.zh-Hant.resx	Adds Traditional Chinese authentication messages.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/Resources/Strings.zh-Hans.resx	Adds Simplified Chinese authentication messages.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/Resources/Strings.tr.resx	Adds Turkish authentication messages.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/Resources/Strings.ru.resx	Adds Russian authentication messages.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/Resources/Strings.resx	Adds neutral authentication messages.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/Resources/Strings.pt-BR.resx	Adds Brazilian Portuguese authentication messages.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/Resources/Strings.pl.resx	Adds Polish authentication messages.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/Resources/Strings.ko.resx	Adds Korean authentication messages.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/Resources/Strings.ja.resx	Adds Japanese authentication messages.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/Resources/Strings.it.resx	Adds Italian authentication messages.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/Resources/Strings.fr.resx	Adds French authentication messages.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/Resources/Strings.es.resx	Adds Spanish authentication messages.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/Resources/Strings.de.resx	Adds German authentication messages.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/Resources/Strings.cs.resx	Adds Czech authentication messages.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/PackageReadme.md	Documents fallback and fatal-error behavior.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/AuthenticationStrings.cs	Implements localized formatting and exception factories.
src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/Abstractions.csproj	Sets explicit embedded resource names.

Files not reviewed (1)

src/Microsoft.Data.SqlClient/src/Resources/Strings.Designer.cs: Generated file

🧠 Review effort: Balanced

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Copilot

🔵 Needs a closer look

This extraction lacks rerun .NET Framework and trimmed/NativeAOT runtime validation, so final human approval remains necessary.

0 open findings

Files not reviewed (1)

src/Microsoft.Data.SqlClient/src/Resources/Strings.Designer.cs: Generated file

🧠 Review effort: Balanced

paulmedynski

Carrying forward my localization-related self-review feedback and reviewer context from #4821 now that this code has moved into this PR. The two inline comments preserve the original feedback and link back to their source threads. This is a feedback transfer, not a new full code review; no tests were run. The other open feedback threads remain on #4821 because their affected code remains in that layer.

Copilot

🔵 Needs a closer look

Resource headers need correction, while cross-framework satellite packaging and NativeAOT behavior remain unverified.

1 open finding

Add missing writer headers to Abstractions resource files · New

Files not reviewed (1)

src/Microsoft.Data.SqlClient/src/Resources/Strings.Designer.cs: Generated file

🧠 Review effort: Balanced

codecov · 2026-10-16T19:17:26Z

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.71%. Comparing base (5aaa9ef) to head (773bb5f).
⚠️ Report is 14 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4852      +/-   ##
==========================================
- Coverage   74.02%   71.71%   -2.31%     
==========================================
  Files         313      313              
  Lines       45726    70864   +25138     
==========================================
+ Hits        33848    50821   +16973     
- Misses      11878    20043    +8165

Flag	Coverage Δ
CI-SqlClient	`?`
sqlclient-pr	`71.71% <ø> (?)`

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benrr101

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cheenamalhotra · 2026-10-30T06:13:49Z

Unrelated to AOT support - I would recommend updating title and desc, but can be kept in stack since it's dependent on AOT work.

Restore resource-backed authentication exception factories, neutral and satellite resources, resource embedding, fallback tests and driver resource cleanup as a separate stacked layer. Verify French parent-culture lookup alongside neutral messages. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Fix authentication localization review feedback in #4852 Restore complete ResX headers across all authentication resource cultures and explain culture selection and diagnostic fallback intent. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Complete authentication exception localization in #4852 Move remaining configuration and registration exception messages into neutral resources, preserve framework exception messages, and focus string tests on helper behavior rather than translation availability. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Cover authentication resource lookup and refine exception factories in #4852 Use French as the stable satellite for direct lookup, parent fallback, neutral fallback, and independent UI/formatting culture coverage. Return concrete exception types from authentication factories. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Copilot

🔵 Needs a closer look

Required supplementary review checks could not be completed because policy and skill references were supplied only as reviewed-checkout paths, without trusted immutable copies.

No open issues 🎉

1 file not reviewed

src/Microsoft.Data.SqlClient/src/Resources/Strings.Designer.cs: Generated file

_{Review effort: Balanced}

Preserve upstream WAM translations in Abstractions, align the neutral upgrade message with version 7.0.2, and cover all localized WAM errors. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Copilot

🔵 Needs a closer look

Mandatory review-policy references were not supplied at a trusted immutable revision, leaving policy-dependent checks for human verification.

No open issues 🎉

1 file not reviewed

src/Microsoft.Data.SqlClient/src/Resources/Strings.Designer.cs: Generated file

_{Review effort: Balanced}

Remove the unused WAM upgrade resources and factory, add the neutral access-token validation resource, and replace the exception-factory theory with focused tests. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Copilot

🔵 Needs a closer look

Required policy checks could not be completed because skill and review-policy references were available only from the reviewed worktree, without a protected-host or immutable trusted-base source.

No open issues 🎉

1 file not reviewed

src/Microsoft.Data.SqlClient/src/Resources/Strings.Designer.cs: Generated file

_{Review effort: Balanced}

paulmedynski

Tracking self-review.

Copilot

🔵 Needs a closer look

Required supplemental review checks could not be completed because neither trusted policy/reference file copies nor an immutable base revision were supplied.

No open issues 🎉

1 file not reviewed

src/Microsoft.Data.SqlClient/src/Resources/Strings.Designer.cs: Generated file

_{Review effort: Balanced}

Copilot AI balanced review requested due to automatic review settings October 16, 2026 13:14

github-project-automation Bot added this to SqlClient Board Oct 16, 2026

github-project-automation Bot moved this to To triage in SqlClient Board Oct 16, 2026

Copilot started reviewing on behalf of paulmedynski October 16, 2026 13:15

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paulmedynski mentioned this pull request Oct 16, 2026

AOT 3: Move authentication registration to an AOT-safe Abstractions registry #4821

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paulmedynski added this pull request to stack #4853 October 16, 2026 13:39

This was referenced Oct 16, 2026

Enforce exact loaded authentication family versions #4820

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AOT 6: Validate localized authentication resources in Abstractions builds #4819

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Add dedicated trimming and AOT tests #4817

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paulmedynski added this to the 8.0.0-preview1 milestone Oct 16, 2026

paulmedynski changed the title ~~AOT: Localize authentication errors in Abstractions~~ AOT 3: Localize authentication errors in Abstractions Oct 16, 2026

paulmedynski moved this from To triage to In progress in SqlClient Board Oct 16, 2026

Copilot AI balanced review requested due to automatic review settings October 16, 2026 13:50

paulmedynski force-pushed the dev/automation/aot-authentication-localization branch from 891338d to 2023eab Compare October 16, 2026 13:50

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Comment thread src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/Resources/Strings.cs.resx Resolved

Comment thread src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/AuthenticationStrings.cs Resolved

paulmedynski force-pushed the dev/automation/aot-authentication-localization branch from 2023eab to 0cf9b26 Compare October 16, 2026 18:04

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Comment thread src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/Resources/Strings.resx Resolved

Copilot AI balanced review requested due to automatic review settings October 19, 2026 17:13

paulmedynski force-pushed the dev/automation/aot-authentication-localization branch from 0cf9b26 to d8d9316 Compare October 19, 2026 17:13

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paulmedynski changed the title ~~AOT 3: Localize authentication errors in Abstractions~~ AOT 4: Localize authentication errors in Abstractions Oct 19, 2026

paulmedynski removed this pull request from stack #4853 October 19, 2026 17:16

paulmedynski removed the Author attention needed PRs that require author to respond or make updates to PR. label Oct 28, 2026

paulmedynski moved this from In progress to In review in SqlClient Board Oct 29, 2026

paulmedynski mentioned this pull request Oct 29, 2026

Validate localized authentication resources in Abstractions builds #4942

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paulmedynski removed this pull request from stack #4861 October 29, 2026 14:13

paulmedynski added this pull request to stack #4943 October 29, 2026 14:13

benrr101 previously approved these changes Oct 29, 2026

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cheenamalhotra previously approved these changes Oct 30, 2026

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paulmedynski modified the milestones: 8.0.0-preview1, 8.0.0 Nov 3, 2026

Base automatically changed from dev/paul/aot/phase-1.3 to main November 4, 2026 17:51

paulmedynski dismissed stale reviews from cheenamalhotra and benrr101 via cf83356 November 6, 2026 13:58

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cheenamalhotra reviewed Nov 6, 2026

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Comment thread src/Microsoft.Data.SqlClient.Extensions/Abstractions/src/Resources/Strings.resx Resolved

apoorvdeshmukh previously approved these changes Nov 10, 2026

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Merge main and move updated WAM localizations into Abstractions

a9403de

Preserve upstream WAM translations in Abstractions, align the neutral upgrade message with version 7.0.2, and cover all localized WAM errors. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

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Merge branch 'main' into dev/automation/aot-authentication-localization

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github-actions Bot mentioned this pull request Nov 12, 2026

[8.0.0 Cherry-pick] Localize authentication errors in Abstractions #5044

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