Module error_formatter 

Error Formatter

This module provides error sanitization and formatting for different environments. It controls what error details are exposed to clients based on deployment context.

Architecture

The Error Formatter acts as the fifth and final layer in the security middleware:

GraphQL Error
    ↓
ErrorFormatter::format_error()
    ├─ Check 1: Determine detail level based on environment
    ├─ Check 2: Sanitize error message
    ├─ Check 3: Remove sensitive information
    └─ Check 4: Return formatted error
    ↓
Safe Error Message (suitable for client)

Examples

use fraiseql_core::security::{ErrorFormatter, DetailLevel};

// Create formatter for production (minimal details)
let formatter = ErrorFormatter::new(DetailLevel::Production);

// Format an error
let error_msg = "Database error: connection refused to postgresql://user:pass@db.local";
let formatted = formatter.format_error(error_msg);
println!("{}", formatted); // Shows only: "Internal server error"

Structs

ErrorFormatter

Error Formatter

SanitizationConfig

Sanitization configuration

Enums

DetailLevel

Detail level for error responses