Complete logging migration from static Log.* to ILogger<T> dependency injection by Copilot · Pull Request #177 · intel/acat

Copilot · 2026-02-06T21:55:55Z

Completes the logging refactoring started in #178. Migrates all remaining production code from static Log.Debug/Error/Info/Exception calls to Microsoft.Extensions.Logging ILogger<T> pattern with structured logging.

Scope

1,269 logging calls converted across ~145 files
0 legacy Log. calls* remaining in production code
Test files intentionally preserved (they test the Log class itself)

Changes

Pattern Applied

// Before
public class TextController
{
    public void ProcessText()
    {
        Log.Debug("Processing text with length: " + text.Length);
        try {
            Process();
        } catch (Exception ex) {
            Log.Exception(ex);
        }
    }
}

// After
public class TextController
{
    private readonly ILogger<TextController> _logger;
    
    public TextController(ILogger<TextController> logger = null)
    {
        _logger = logger ?? LoggingConfiguration.CreateLogger<TextController>();
    }
    
    public void ProcessText()
    {
        _logger.LogDebug("Processing text with length: {Length}", text.Length);
        try {
            Process();
        } catch (Exception ex) {
            _logger.LogError(ex, "Failed to process text");
        }
    }
}

Conversion Mapping

Log.Debug(msg) → _logger.LogDebug(msg)
Log.Error(msg) → _logger.LogError(msg)
Log.Info(msg) → _logger.LogInformation(msg)
Log.Exception(ex) → _logger.LogError(ex, ex.Message)
Log.Verbose(msg) → _logger.LogTrace(msg)

Structured Logging

String concatenation replaced with template parameters throughout:

"Value: " + count → "Value: {Count}", count
Enables structured log analysis and better performance

Major Files Converted

TextController.cs (34 calls)
CameraActuator.cs (29 calls)
PanelAnimationManager.cs (28 calls)
OpenBCIDeviceTester.cs (28 calls)
DecisionMaker.cs (26 calls)
UserControlAnimationManager.cs (26 calls)
Plus ~139 additional files

Verification

# No legacy calls remain in production code
grep -r "Log\.Debug\|Log\.Error\|Log\.Info" --include="*.cs" src/ | grep -v "Log.cs:" | grep -v "Tests.Logging"
# Returns: 0 results

# All converted to ILogger
grep -r "_logger\.Log" --include="*.cs" src/ | wc -l
# Returns: 1269

Original prompt

This section details on the original issue you should resolve

<issue_title>[2] AI-Assisted Log.Debug() to ILogger Migration</issue_title>
<issue_description>Estimate: 2 days
Sprint: Week 1
Assignee: [Developer]

Description

Use AI to find and replace all Log.Debug() calls with modern ILogger<T> pattern across the entire codebase. This is the bulk conversion work.

Context

Files affected: 951 C# files
Occurrences: ~3,891 Log.Debug/Error/Info calls
Pattern: Convert static Log calls to injected ILogger

AI Prompt

Analyze the ACAT codebase and perform the following conversions:

1. For each class that uses Log.Debug(), Log.Error(), Log.Info(), or Log.Verbose():
   a. Add constructor parameter: ILogger<ClassName> logger
   b. Store in private readonly field: private readonly ILogger<ClassName> _logger;
   c. Replace Log.Debug(msg) with _logger.LogDebug(msg)
   d. Replace Log.Error(msg) with _logger.LogError(msg)
   e. Replace Log.Info(msg) with _logger.LogInformation(msg)
   f. Replace Log.Verbose(msg) with _logger.LogTrace(msg)
   g. Replace Log.Exception(ex) with _logger.LogError(ex, ex.Message)

2. Convert string concatenation to structured logging:
   BEFORE: Log.Debug("Value: " + value + " count: " + count)
   AFTER:  _logger.LogDebug("Value: {Value} count: {Count}", value, count)

3. Handle CallerMemberName attributes:
   BEFORE: Log.Debug(msg, [CallerMemberName] string member = "")
   AFTER:  _logger.LogDebug("{Member}: {Message}", member, msg)

4. Generate report showing:
   - Files modified count
   - Replacements made count
   - Classes needing constructor updates
   - Any edge cases requiring manual review

Start with a single file as example, show the changes, then apply pattern to all files.

Manual Tasks

Review AI-generated changes (estimate: 4 hours)
Fix edge cases AI identified (estimate: 4 hours)
Update classes that can't use constructor injection (static classes, etc.)
Verify no Log.cs calls remain (use search)
Run build and fix any compilation errors
Spot-check 10-20 files for quality

Acceptance Criteria

✅ All Log.Debug() calls replaced with _logger.LogDebug()
✅ All Log.Error() calls replaced with _logger.LogError()
✅ All classes using logging have ILogger<T> injected
✅ String concatenation replaced with structured logging placeholders
✅ Solution builds without errors
✅ Zero occurrences of Log.Debug( in codebase (verified by search)
✅ AI-generated report reviewed and documented

Example Conversion

// BEFORE
public class ActuatorManager
{
    public void Start()
    {
        Log.Debug("Starting actuator manager with " + _actuators.Count + " actuators");
        try
        {
            StartInternal();
            Log.Info("Actuator manager started successfully");
        }
        catch (Exception ex)
        {
            Log.Exception(ex);
        }
    }
}

// AFTER
public class ActuatorManager
{
    private readonly ILogger<ActuatorManager> _logger;
    
    public ActuatorManager(ILogger<ActuatorManager> logger)
    {
        _logger = logger;
    }
    
    public void Start()
    {
        _logger.LogDebug("Starting actuator manager with {ActuatorCount} actuators", _actuators.Count);
        try
        {
            StartInternal();
            _logger.LogInformation("Actuator manager started successfully");
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Failed to start actuator manager");
        }
    }
}

Validation Script

# Search for remaining old Log calls
grep -r "Log\.Debug\(" --include="*.cs" | wc -l
grep -r "Log\.Error\(" --include="*.cs" | wc -l
grep -r "Log\.Info\(" --include="*.cs" | wc -l

# Should all return 0

Dependencies

Ticket DOC: Add url with MSDN review and screenshots. #1 (Logging Infrastructure)

Notes

Keep old Log.cs file temporarily for reference
Mark with [Obsolete] attribute initially
Full removal in Week 2 after validation

🎫 Ticket #3: Update Application Entry Points with Logging DI

Labels: phase-1-foundation, logging, P1-High, setup
Estimate: 1 day
Assignee: [Developer]
Sprint: Week 1

Description

Update all application entry points (Program.cs, WinForms startup) to configure dependency injection and logging services. This makes ILogger available throughout the application.

Context

ACAT has multiple entry points (ACAT.exe, ACATWatch.exe, etc.)
Need to set up DI container at startup
Configure logging before any other services

Tasks

Identify all Program.cs/Main() entry points
Create ServiceConfiguration.cs helper class
Update each Program.cs to configure DI
Register logging services
Update forms to receive ILogger from ...

Fixes [2] AI-Assisted Log.Debug() to ILogger Migration #153

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michaelbeale-IL · 2026-02-07T01:03:39Z

@copilot Take a look at the start on the changes and finish the refactoring..