185 lines
5.1 KiB
Markdown
185 lines
5.1 KiB
Markdown
# Claude Code CLI - Error Handling Specifications
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## Error Classification
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### Severity Levels
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| Level | Description | User Impact | Handling Approach |
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|-------|-------------|------------|-------------------|
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| Critical | Application cannot continue | Application termination | Immediate logging, clean shutdown, detailed recovery instructions |
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| Major | Feature completely broken | Feature unavailable | Graceful degradation, alternative suggestion, detailed error message |
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| Minor | Partial feature limitation | Reduced functionality | Warning message, continue with limited functionality |
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| Informational | Non-disruptive issue | Minimal to none | Subtle notification, continue normal operation |
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### Error Categories
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| Category | Description | Examples |
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|----------|-------------|----------|
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| Authentication | Issues with user authentication | Invalid token, expired credentials, permission denied |
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| Network | Connection and communication errors | API timeout, connection refused, SSL certificate error |
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| File System | Issues with reading/writing files | Permission denied, file not found, locked file |
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| Command Execution | Problems running terminal commands | Command not found, execution failure, timeout |
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| AI Service | Issues with AI processing | Rate limit exceeded, invalid request, model error |
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| Configuration | Problems with application setup | Invalid config format, missing required settings |
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| Resource | System resource limitations | Out of memory, disk space exhausted |
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## Error Handling Strategies
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### Retry Mechanisms
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- Exponential backoff for transient errors
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- Configurable retry limits
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- Progress notification during retries
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- Fallback mechanisms after exhausting retries
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### Graceful Degradation
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- Feature-specific fallback modes
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- Reduced functionality operation
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- Local-only operation when cloud services unavailable
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- Cache utilization for resilience
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### User Notification
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- Clear, actionable error messages
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- Technical details available on demand
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- Suggested remediation steps
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- Links to relevant documentation
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### Recovery Procedures
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- Session state preservation
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- Auto-save mechanisms
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- Crash recovery on restart
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- Transaction rollback for failed operations
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## Error Tracking and Reporting
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### Telemetry Collection
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- Error frequency and patterns
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- Environment context capture
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- Anonymized error reports
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- User-permitted crash reports
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### Sentry Integration
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- Real-time error tracking
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- Exception grouping and analysis
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- Performance impact assessment
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- Release correlation
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### Error Aggregation
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- Pattern recognition across instances
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- Prioritization based on impact
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- Trend analysis for recurring issues
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- User impact assessment
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## Specific Error Handling Cases
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### Authentication Errors
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- Clear re-authentication instructions
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- Token refresh attempts
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- Credential validation checks
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- Security-focused error messages
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### API Communication Errors
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- Connection diagnostics
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- Network environment checks
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- Request/response logging
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- API status verification
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### File System Errors
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- Permission verification
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- Path validation
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- Resource availability checks
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- Alternative storage suggestions
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### Command Execution Errors
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- Shell environment validation
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- Dependency verification
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- Command path verification
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- Output/error stream capture
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### AI Processing Errors
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- Query validation
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- Context size management
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- Rate limit handling
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- Model fallback options
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## Error Logging
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### Log Levels
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| Level | Description | Information Included |
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|-------|-------------|----------------------|
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| ERROR | Significant problems | Error details, stack trace, context, user action |
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| WARN | Potential issues | Warning details, related context, potential impact |
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| INFO | Normal but significant events | Event description, relevant parameters |
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| DEBUG | Detailed diagnostic information | Verbose execution details, state information |
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| TRACE | Very detailed diagnostic information | Full execution path, variable states |
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### Log Structure
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```json
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{
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"timestamp": "ISO-8601 timestamp",
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"level": "ERROR|WARN|INFO|DEBUG|TRACE",
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"message": "Human-readable message",
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"category": "Error category",
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"code": "Error code",
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"user": {
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"id": "Anonymized user identifier",
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"action": "User action that triggered the error"
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},
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"context": {
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"command": "Executed command",
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"file": "Relevant file path",
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"operation": "Operation being performed"
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},
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"technical": {
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"stack": "Stack trace (if applicable)",
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"raw": "Raw error details"
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},
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"session": {
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"id": "Session identifier",
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"duration": "Session duration in seconds"
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}
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}
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```
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### Log Storage and Rotation
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- Local log files with rotation
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- Size and time-based rotation policies
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- Compression of archived logs
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- Automated cleanup of old logs
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## User-Facing Error Messages
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### Message Structure
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- Clear problem statement
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- Probable cause
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- Suggested action
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- Further information reference
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### Localization
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- Error message translation framework
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- Locale-specific error resources
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- Fallback to English for missing translations
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- Cultural sensitivity in error messaging
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### Visual Presentation
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- Color-coding by severity
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- Icons for error categories
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- Progressive disclosure of technical details
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- Contextual help links |