[Storage] Replacing scaling logs to WebJobs extension methods

[alrod]

Summary

Replace direct LogWarning calls in the Storage Queue scaling extensions with standardized LogFunctionScaleWarning WebJobs extension method.

This enables the Scale Controller's OpenTelemetry logger to intercept scaling warning/error events (EventIds 8001/8003) and forward them to the customer's Application Insights, providing visibility into connectivity errors during scaling.

Changes

• QueueMetricsProvider.cs: Added functionId constructor parameter; replaced LogWarning with LogFunctionScaleWarning for error logging
• QueueScaleMonitor.cs: Updated constructor call to pass functionId to QueueMetricsProvider
• QueueTargetScaler.cs: Updated QueueMetricsProvider constructor call to pass functionId
• QueueMetricsProviderTests.cs: Updated test constructor calls to include functionId parameter
• CHANGELOG.md: Added entry under Other Changes

Why no Blob trigger changes?

The Blob trigger's ZeroToOneTargetScaler does not need equivalent changes because:

1. Exceptions are already handled at the WebJobs SDK level — ScaleManager.GetTargetScaleResult wraps every GetScaleResultAsync call in a try/catch that logs via LogFunctionScaleError (EventId 8001), which the SC's OpenTelemetry logger already intercepts.
2. Scale votes are already emitted — ScaleManager calls LogFunctionScaleVote (EventId 8002) after every successful GetScaleResultAsync, so the target worker count is already surfaced.
3. No connectivity error paths — unlike Queue/ServiceBus/EventHubs/CosmosDB metrics providers, the Blob target scaler has no internal catch blocks that silently swallow errors.

Phase 2 (follow-up)

Migrating the LogInformation scale vote detail logs to LogFunctionScaleVote will follow once azure-webjobs-sdk #3189 ships (changes vote log level from Debug to Information).

Context

Part of the Scale Controller App Insights logging feature (AAPT-Antares-ScaleController PR #14140160).

Related PRs:

• #53925 - EventHubs extension
• #53926 - ServiceBus extension
• #975 - CosmosDB extension

[Copilot]

Pull Request Overview

This PR replaces direct logging calls with WebJobs extension methods for scaling-related logs in the Azure Storage Extensions. The changes introduce LogFunctionScaleVote and LogFunctionScaleError extension methods to provide standardized logging for function scaling events.

Key changes:

• Migrated from _logger.LogInformation to _logger.LogFunctionScaleVote in QueueTargetScaler for scale vote logging
• Replaced _logger.LogWarning with _logger.LogFunctionScaleError in QueueMetricsProvider for error logging
• Updated Microsoft.Azure.WebJobs package references from version 3.0.41 to 3.0.42-dev to access the new extension methods

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 6 comments.

File	Description
sdk/storage/Microsoft.Azure.WebJobs.Extensions.Storage.Common/src/Shared/Queues/QueueTargetScaler.cs	Replaced LogInformation with LogFunctionScaleVote extension method for scale decision logging
sdk/storage/Microsoft.Azure.WebJobs.Extensions.Storage.Common/src/Shared/Queues/QueueMetricsProvider.cs	Replaced LogWarning with LogFunctionScaleError extension method for error logging and added Microsoft.Azure.WebJobs.Host.Scale namespace import
eng/Packages.Data.props	Updated Microsoft.Azure.WebJobs package versions to 3.0.42-dev to support the new logging extension methods
NuGet.Config	Added local package source for development/testing purposes

[amnguye]

Once version 3.0.42 goes out for Microsoft.Azure.WebJobs and Microsoft.Azure.WebJobs.Sources, you will update this PR to use that version? (and also remove the reference to )

otherwise LGTM at this time

[mathewc]

Just a minor nit on spacing

[github-actions]

Hi @alrod. Thank you for your interest in helping to improve the Azure SDK experience and for your contribution. We've noticed that there hasn't been recent engagement on this pull request. If this is still an active work stream, please let us know by pushing some changes or leaving a comment. Otherwise, we'll close this out in 7 days.

[github-actions]

Hi @alrod. Thank you for your contribution. Since there hasn't been recent engagement, we're going to close this out. Feel free to respond with a comment containing /reopen if you'd like to continue working on these changes. Please be sure to use the command to reopen or remove the no-recent-activity label; otherwise, this is likely to be closed again with the next cleanup pass.

[alrod]

/reopen

[github-actions]

API Change Check

APIView identified API level changes in this PR and created the following API reviews

Microsoft.Azure.WebJobs.Extensions.Storage.Common