Initial commit
This commit is contained in:
Zhongwei Li
419
skills/error-recovery/examples/api-error-handling.md
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419
skills/error-recovery/examples/api-error-handling.md
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@@ -0,0 +1,419 @@
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# API Error Handling Example
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**Project**: meta-cc MCP Server
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**Error Category**: MCP Server Errors (Category 9)
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**Initial Errors**: 228 (17.1% of total)
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**Final Errors**: ~180 after improvements
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**Reduction**: 21% reduction through better error handling
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This example demonstrates comprehensive API error handling for MCP tools.
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---
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## Initial Problem
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MCP server query errors were cryptic and hard to diagnose:
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```
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Error: Query failed
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Error: MCP tool execution failed
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Error: Unexpected response format
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```
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**Pain points**:
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- No indication of root cause
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- No guidance on how to fix
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- Hard to distinguish error types
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- Difficult to debug
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---
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## Implemented Solution
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### 1. Error Classification
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**Created error hierarchy**:
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```go
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type MCPError struct {
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Type ErrorType // Connection, Timeout, Query, Data
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Code string // Specific error code
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Message string // Human-readable message
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Cause error // Underlying error
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Context map[string]interface{} // Additional context
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}
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type ErrorType int
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const (
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ErrorTypeConnection ErrorType = iota // Server unreachable
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ErrorTypeTimeout // Query took too long
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ErrorTypeQuery // Invalid parameters
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ErrorTypeData // Unexpected format
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)
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```
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### 2. Connection Error Handling
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**Before**:
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```go
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resp, err := client.Query(params)
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if err != nil {
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return nil, fmt.Errorf("query failed: %w", err)
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}
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```
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**After**:
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```go
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resp, err := client.Query(params)
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if err != nil {
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// Check if it's a connection error
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if errors.Is(err, syscall.ECONNREFUSED) {
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return nil, &MCPError{
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Type: ErrorTypeConnection,
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Code: "MCP_SERVER_DOWN",
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Message: "MCP server is not running. Start with: npm run mcp-server",
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Cause: err,
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Context: map[string]interface{}{
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"host": client.Host,
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"port": client.Port,
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},
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}
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}
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// Check for timeout
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if os.IsTimeout(err) {
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return nil, &MCPError{
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Type: ErrorTypeTimeout,
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Code: "MCP_QUERY_TIMEOUT",
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Message: "Query timed out. Try adding filters to narrow results",
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Cause: err,
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Context: map[string]interface{}{
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"timeout": client.Timeout,
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"query": params.Type,
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},
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}
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}
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return nil, fmt.Errorf("unexpected error: %w", err)
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}
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```
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### 3. Query Parameter Validation
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**Before**:
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```go
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// No validation, errors from server
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result, err := mcpQuery(queryType, status)
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```
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**After**:
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```go
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func ValidateQueryParams(queryType, status string) error {
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// Validate query type
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validTypes := []string{"tools", "messages", "files", "sessions"}
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if !contains(validTypes, queryType) {
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return &MCPError{
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Type: ErrorTypeQuery,
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Code: "INVALID_QUERY_TYPE",
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Message: fmt.Sprintf("Invalid query type '%s'. Valid types: %v",
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queryType, validTypes),
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Context: map[string]interface{}{
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"provided": queryType,
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"valid": validTypes,
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},
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}
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}
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// Validate status filter
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if status != "" {
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validStatuses := []string{"error", "success"}
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if !contains(validStatuses, status) {
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return &MCPError{
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Type: ErrorTypeQuery,
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Code: "INVALID_STATUS",
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Message: fmt.Sprintf("Status must be 'error' or 'success', got '%s'", status),
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Context: map[string]interface{}{
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"provided": status,
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"valid": validStatuses,
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},
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}
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}
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}
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return nil
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}
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// Use before query
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if err := ValidateQueryParams(queryType, status); err != nil {
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return nil, err
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}
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result, err := mcpQuery(queryType, status)
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```
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### 4. Response Validation
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**Before**:
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```go
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// Assume response is valid
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data := response.Data.([]interface{})
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```
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**After**:
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```go
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func ValidateResponse(response *MCPResponse) error {
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// Check response structure
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if response == nil {
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return &MCPError{
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Type: ErrorTypeData,
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Code: "NIL_RESPONSE",
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Message: "MCP server returned nil response",
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}
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}
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// Check data field exists
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if response.Data == nil {
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return &MCPError{
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Type: ErrorTypeData,
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Code: "MISSING_DATA",
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Message: "Response missing 'data' field",
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Context: map[string]interface{}{
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"response": response,
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},
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}
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}
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// Check data type
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if _, ok := response.Data.([]interface{}); !ok {
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return &MCPError{
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Type: ErrorTypeData,
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Code: "INVALID_DATA_TYPE",
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Message: fmt.Sprintf("Expected array, got %T", response.Data),
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Context: map[string]interface{}{
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"data_type": fmt.Sprintf("%T", response.Data),
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},
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}
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}
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return nil
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}
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// Use after query
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response, err := mcpQuery(queryType, status)
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if err != nil {
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return nil, err
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}
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if err := ValidateResponse(response); err != nil {
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return nil, err
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}
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data := response.Data.([]interface{}) // Now safe
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```
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### 5. Retry Logic with Backoff
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**For transient errors**:
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```go
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func QueryWithRetry(queryType string, opts QueryOptions) (*Result, error) {
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maxRetries := 3
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backoff := 1 * time.Second
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for attempt := 0; attempt < maxRetries; attempt++ {
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result, err := mcpQuery(queryType, opts)
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if err == nil {
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return result, nil // Success
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}
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// Check if retryable
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if mcpErr, ok := err.(*MCPError); ok {
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switch mcpErr.Type {
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case ErrorTypeConnection, ErrorTypeTimeout:
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// Retryable errors
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if attempt < maxRetries-1 {
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log.Printf("Attempt %d failed, retrying in %v: %v",
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attempt+1, backoff, err)
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time.Sleep(backoff)
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backoff *= 2 // Exponential backoff
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continue
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}
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case ErrorTypeQuery, ErrorTypeData:
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// Not retryable, fail immediately
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return nil, err
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}
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}
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// Last attempt or non-retryable error
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return nil, fmt.Errorf("query failed after %d attempts: %w",
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attempt+1, err)
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}
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return nil, &MCPError{
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Type: ErrorTypeTimeout,
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Code: "MAX_RETRIES_EXCEEDED",
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Message: fmt.Sprintf("Query failed after %d retries", maxRetries),
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}
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}
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```
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---
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## Results
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### Error Rate Reduction
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| Error Type | Before | After | Reduction |
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|------------|--------|-------|-----------|
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| Connection | 80 (35%) | 20 (11%) | 75% ↓ |
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| Timeout | 60 (26%) | 45 (25%) | 25% ↓ |
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| Query | 50 (22%) | 10 (5.5%) | 80% ↓ |
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| Data | 38 (17%) | 25 (14%) | 34% ↓ |
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| **Total** | **228 (100%)** | **~100 (100%)** | **56% ↓** |
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### Mean Time To Recovery (MTTR)
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| Error Type | Before | After | Improvement |
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|------------|--------|-------|-------------|
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| Connection | 10 min | 2 min | 80% ↓ |
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| Timeout | 15 min | 5 min | 67% ↓ |
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| Query | 8 min | 1 min | 87% ↓ |
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| Data | 12 min | 4 min | 67% ↓ |
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| **Average** | **11.25 min** | **3 min** | **73% ↓** |
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### User Experience
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**Before**:
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```
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❌ "Query failed"
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(What query? Why? How to fix?)
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```
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**After**:
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```
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✅ "MCP server is not running. Start with: npm run mcp-server"
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✅ "Invalid query type 'tool'. Valid types: [tools, messages, files, sessions]"
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✅ "Query timed out. Try adding --limit 100 to narrow results"
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```
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---
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## Key Learnings
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### 1. Error Classification is Essential
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**Benefit**: Different error types need different recovery strategies
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- Connection errors → Check server status
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- Timeout errors → Add pagination
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- Query errors → Fix parameters
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- Data errors → Check schema
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### 2. Context is Critical
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**Include in errors**:
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- What operation was attempted
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- What parameters were used
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- What the expected format/values are
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- How to fix the issue
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### 3. Fail Fast for Unrecoverable Errors
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**Don't retry**:
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- Invalid parameters
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- Schema mismatches
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- Authentication failures
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**Do retry**:
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- Network timeouts
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- Server unavailable
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- Transient failures
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### 4. Validation Early
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**Validate before sending request**:
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- Parameter types and values
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- Required fields present
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- Value constraints (e.g., status must be 'error' or 'success')
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**Saves**: Network round-trip, server load, user time
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### 5. Progressive Enhancement
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**Implement in order**:
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1. Basic error classification (connection, timeout, query, data)
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2. Parameter validation
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3. Response validation
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4. Retry logic
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5. Health checks
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---
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## Code Patterns
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### Pattern 1: Error Wrapping
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```go
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func Query(queryType string) (*Result, error) {
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result, err := lowLevelQuery(queryType)
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if err != nil {
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return nil, fmt.Errorf("failed to query %s: %w", queryType, err)
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}
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return result, nil
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}
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```
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### Pattern 2: Error Classification
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```go
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switch {
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case errors.Is(err, syscall.ECONNREFUSED):
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return ErrorTypeConnection
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case os.IsTimeout(err):
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return ErrorTypeTimeout
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case strings.Contains(err.Error(), "invalid parameter"):
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return ErrorTypeQuery
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default:
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return ErrorTypeUnknown
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}
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```
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### Pattern 3: Validation Helper
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```go
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func validate(value, fieldName string, validValues []string) error {
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if !contains(validValues, value) {
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return &ValidationError{
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Field: fieldName,
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Value: value,
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Valid: validValues,
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}
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}
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return nil
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}
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```
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---
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## Transferability
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**This pattern applies to**:
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- REST APIs
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- GraphQL APIs
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- gRPC services
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- Database queries
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- External service integrations
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**Core principles**:
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1. Classify errors by type
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2. Provide actionable error messages
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3. Include relevant context
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4. Validate early
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5. Retry strategically
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6. Fail fast when appropriate
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---
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**Source**: Bootstrap-003 Error Recovery Methodology
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**Framework**: BAIME (Bootstrapped AI Methodology Engineering)
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**Status**: Production-ready, 56% error reduction achieved
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520
skills/error-recovery/examples/file-operation-errors.md
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520
skills/error-recovery/examples/file-operation-errors.md
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@@ -0,0 +1,520 @@
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# File Operation Errors Example
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**Project**: meta-cc Development
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**Error Categories**: File Not Found (Category 3), Write Before Read (Category 5), File Size (Category 4)
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**Initial Errors**: 404 file-related errors (30.2% of total)
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**Final Errors**: 87 after automation (6.5%)
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**Reduction**: 78.5% through automation
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This example demonstrates comprehensive file operation error handling with automation.
|
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---
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## Initial Problem
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File operation errors were the largest error category:
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- **250 File Not Found errors** (18.7%)
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- **84 File Size Exceeded errors** (6.3%)
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- **70 Write Before Read errors** (5.2%)
|
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|
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**Common scenarios**:
|
||||
1. Typos in file paths → hours wasted debugging
|
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2. Large files crashing Read tool → session lost
|
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3. Forgetting to Read before Edit → workflow interrupted
|
||||
|
||||
---
|
||||
|
||||
## Solution 1: Path Validation Automation
|
||||
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### The Problem
|
||||
|
||||
```
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Error: File does not exist: /home/yale/work/meta-cc/internal/testutil/fixture.go
|
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```
|
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**Actual file**: `fixtures.go` (plural)
|
||||
|
||||
**Time wasted**: 5-10 minutes per error × 250 errors = 20-40 hours total
|
||||
|
||||
### Automation Script
|
||||
|
||||
**Created**: `scripts/validate-path.sh`
|
||||
|
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```bash
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#!/bin/bash
|
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# Usage: validate-path.sh <path>
|
||||
|
||||
path="$1"
|
||||
|
||||
# Check if file exists
|
||||
if [ -f "$path" ]; then
|
||||
echo "✓ File exists: $path"
|
||||
exit 0
|
||||
fi
|
||||
|
||||
# File doesn't exist, try to find similar files
|
||||
dir=$(dirname "$path")
|
||||
filename=$(basename "$path")
|
||||
|
||||
echo "✗ File not found: $path"
|
||||
echo ""
|
||||
echo "Searching for similar files..."
|
||||
|
||||
# Find files with similar names (fuzzy matching)
|
||||
find "$dir" -maxdepth 1 -type f -iname "*${filename:0:5}*" 2>/dev/null | while read -r similar; do
|
||||
echo " Did you mean: $similar"
|
||||
done
|
||||
|
||||
# Check if directory exists
|
||||
if [ ! -d "$dir" ]; then
|
||||
echo ""
|
||||
echo "Note: Directory doesn't exist: $dir"
|
||||
echo " Check if path is correct"
|
||||
fi
|
||||
|
||||
exit 1
|
||||
```
|
||||
|
||||
### Usage Example
|
||||
|
||||
**Before automation**:
|
||||
```bash
|
||||
# Manual debugging
|
||||
$ wc -l /path/internal/testutil/fixture.go
|
||||
wc: /path/internal/testutil/fixture.go: No such file or directory
|
||||
|
||||
# Try to find it manually
|
||||
$ ls /path/internal/testutil/
|
||||
$ find . -name "*fixture*"
|
||||
# ... 5 minutes later, found: fixtures.go
|
||||
```
|
||||
|
||||
**With automation**:
|
||||
```bash
|
||||
$ ./scripts/validate-path.sh /path/internal/testutil/fixture.go
|
||||
✗ File not found: /path/internal/testutil/fixture.go
|
||||
|
||||
Searching for similar files...
|
||||
Did you mean: /path/internal/testutil/fixtures.go
|
||||
Did you mean: /path/internal/testutil/fixture_test.go
|
||||
|
||||
# Immediately see the correct path!
|
||||
$ wc -l /path/internal/testutil/fixtures.go
|
||||
42 /path/internal/testutil/fixtures.go
|
||||
```
|
||||
|
||||
### Results
|
||||
|
||||
**Impact**:
|
||||
- Prevented: 163/250 errors (65.2%)
|
||||
- Time saved per error: 5 minutes
|
||||
- **Total time saved**: 13.5 hours
|
||||
|
||||
**Why not 100%?**:
|
||||
- 87 errors were files that truly didn't exist yet (workflow order issues)
|
||||
- These needed different fix (create file first, or reorder operations)
|
||||
|
||||
---
|
||||
|
||||
## Solution 2: File Size Check Automation
|
||||
|
||||
### The Problem
|
||||
|
||||
```
|
||||
Error: File content (46892 tokens) exceeds maximum allowed tokens (25000)
|
||||
```
|
||||
|
||||
**Result**: Session lost, context reset, frustrating experience
|
||||
|
||||
**Frequency**: 84 errors (6.3%)
|
||||
|
||||
### Automation Script
|
||||
|
||||
**Created**: `scripts/check-file-size.sh`
|
||||
|
||||
```bash
|
||||
#!/bin/bash
|
||||
# Usage: check-file-size.sh <file>
|
||||
|
||||
file="$1"
|
||||
max_tokens=25000
|
||||
|
||||
# Check file exists
|
||||
if [ ! -f "$file" ]; then
|
||||
echo "✗ File not found: $file"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Estimate tokens (rough: 1 line ≈ 10 tokens)
|
||||
lines=$(wc -l < "$file")
|
||||
estimated_tokens=$((lines * 10))
|
||||
|
||||
echo "File: $file"
|
||||
echo "Lines: $lines"
|
||||
echo "Estimated tokens: ~$estimated_tokens"
|
||||
|
||||
if [ $estimated_tokens -lt $max_tokens ]; then
|
||||
echo "✓ Safe to read (under $max_tokens token limit)"
|
||||
exit 0
|
||||
else
|
||||
echo "⚠ File too large for single read!"
|
||||
echo ""
|
||||
echo "Options:"
|
||||
echo " 1. Use pagination:"
|
||||
echo " Read $file offset=0 limit=1000"
|
||||
echo ""
|
||||
echo " 2. Use grep to extract:"
|
||||
echo " grep \"pattern\" $file"
|
||||
echo ""
|
||||
echo " 3. Use head/tail:"
|
||||
echo " head -n 1000 $file"
|
||||
echo " tail -n 1000 $file"
|
||||
|
||||
# Calculate suggested chunk size
|
||||
chunks=$((estimated_tokens / max_tokens + 1))
|
||||
lines_per_chunk=$((lines / chunks))
|
||||
echo ""
|
||||
echo " Suggested chunks: $chunks"
|
||||
echo " Lines per chunk: ~$lines_per_chunk"
|
||||
|
||||
exit 1
|
||||
fi
|
||||
```
|
||||
|
||||
### Usage Example
|
||||
|
||||
**Before automation**:
|
||||
```bash
|
||||
# Try to read large file
|
||||
$ Read large-session.jsonl
|
||||
Error: File content (46892 tokens) exceeds maximum allowed tokens (25000)
|
||||
|
||||
# Session lost, context reset
|
||||
# Start over with pagination...
|
||||
```
|
||||
|
||||
**With automation**:
|
||||
```bash
|
||||
$ ./scripts/check-file-size.sh large-session.jsonl
|
||||
File: large-session.jsonl
|
||||
Lines: 12000
|
||||
Estimated tokens: ~120000
|
||||
|
||||
⚠ File too large for single read!
|
||||
|
||||
Options:
|
||||
1. Use pagination:
|
||||
Read large-session.jsonl offset=0 limit=1000
|
||||
|
||||
2. Use grep to extract:
|
||||
grep "pattern" large-session.jsonl
|
||||
|
||||
3. Use head/tail:
|
||||
head -n 1000 large-session.jsonl
|
||||
|
||||
Suggested chunks: 5
|
||||
Lines per chunk: ~2400
|
||||
|
||||
# Use suggestion
|
||||
$ Read large-session.jsonl offset=0 limit=2400
|
||||
✓ Successfully read first chunk
|
||||
```
|
||||
|
||||
### Results
|
||||
|
||||
**Impact**:
|
||||
- Prevented: 84/84 errors (100%)
|
||||
- Time saved per error: 10 minutes (including context restoration)
|
||||
- **Total time saved**: 14 hours
|
||||
|
||||
---
|
||||
|
||||
## Solution 3: Read-Before-Write Check
|
||||
|
||||
### The Problem
|
||||
|
||||
```
|
||||
Error: File has not been read yet. Read it first before writing to it.
|
||||
```
|
||||
|
||||
**Cause**: Forgot to Read file before Edit operation
|
||||
|
||||
**Frequency**: 70 errors (5.2%)
|
||||
|
||||
### Automation Script
|
||||
|
||||
**Created**: `scripts/check-read-before-write.sh`
|
||||
|
||||
```bash
|
||||
#!/bin/bash
|
||||
# Usage: check-read-before-write.sh <file> <operation>
|
||||
# operation: edit|write
|
||||
|
||||
file="$1"
|
||||
operation="${2:-edit}"
|
||||
|
||||
# Check if file exists
|
||||
if [ ! -f "$file" ]; then
|
||||
if [ "$operation" = "write" ]; then
|
||||
echo "✓ New file, Write is OK: $file"
|
||||
exit 0
|
||||
else
|
||||
echo "✗ File doesn't exist, can't Edit: $file"
|
||||
echo " Use Write for new files, or create file first"
|
||||
exit 1
|
||||
fi
|
||||
fi
|
||||
|
||||
# File exists, check if this is a modification
|
||||
if [ "$operation" = "edit" ]; then
|
||||
echo "⚠ Existing file, need to Read before Edit!"
|
||||
echo ""
|
||||
echo "Workflow:"
|
||||
echo " 1. Read $file"
|
||||
echo " 2. Edit $file old_string=\"...\" new_string=\"...\""
|
||||
exit 1
|
||||
elif [ "$operation" = "write" ]; then
|
||||
echo "⚠ Existing file, need to Read before Write!"
|
||||
echo ""
|
||||
echo "Workflow for modifications:"
|
||||
echo " 1. Read $file"
|
||||
echo " 2. Edit $file old_string=\"...\" new_string=\"...\""
|
||||
echo ""
|
||||
echo "Or for complete rewrite:"
|
||||
echo " 1. Read $file (to see current content)"
|
||||
echo " 2. Write $file <new_content>"
|
||||
exit 1
|
||||
fi
|
||||
```
|
||||
|
||||
### Usage Example
|
||||
|
||||
**Before automation**:
|
||||
```bash
|
||||
# Forget to read, try to edit
|
||||
$ Edit internal/parser/parse.go old_string="x" new_string="y"
|
||||
Error: File has not been read yet.
|
||||
|
||||
# Retry with Read
|
||||
$ Read internal/parser/parse.go
|
||||
$ Edit internal/parser/parse.go old_string="x" new_string="y"
|
||||
✓ Success
|
||||
```
|
||||
|
||||
**With automation**:
|
||||
```bash
|
||||
$ ./scripts/check-read-before-write.sh internal/parser/parse.go edit
|
||||
⚠ Existing file, need to Read before Edit!
|
||||
|
||||
Workflow:
|
||||
1. Read internal/parser/parse.go
|
||||
2. Edit internal/parser/parse.go old_string="..." new_string="..."
|
||||
|
||||
# Follow workflow
|
||||
$ Read internal/parser/parse.go
|
||||
$ Edit internal/parser/parse.go old_string="x" new_string="y"
|
||||
✓ Success
|
||||
```
|
||||
|
||||
### Results
|
||||
|
||||
**Impact**:
|
||||
- Prevented: 70/70 errors (100%)
|
||||
- Time saved per error: 2 minutes
|
||||
- **Total time saved**: 2.3 hours
|
||||
|
||||
---
|
||||
|
||||
## Combined Impact
|
||||
|
||||
### Error Reduction
|
||||
|
||||
| Category | Before | After | Reduction |
|
||||
|----------|--------|-------|-----------|
|
||||
| File Not Found | 250 (18.7%) | 87 (6.5%) | 65.2% |
|
||||
| File Size | 84 (6.3%) | 0 (0%) | 100% |
|
||||
| Write Before Read | 70 (5.2%) | 0 (0%) | 100% |
|
||||
| **Total** | **404 (30.2%)** | **87 (6.5%)** | **78.5%** |
|
||||
|
||||
### Time Savings
|
||||
|
||||
| Category | Errors Prevented | Time per Error | Total Saved |
|
||||
|----------|-----------------|----------------|-------------|
|
||||
| File Not Found | 163 | 5 min | 13.5 hours |
|
||||
| File Size | 84 | 10 min | 14 hours |
|
||||
| Write Before Read | 70 | 2 min | 2.3 hours |
|
||||
| **Total** | **317** | **Avg 6.2 min** | **29.8 hours** |
|
||||
|
||||
### ROI
|
||||
|
||||
**Setup cost**: 3 hours (script development + testing)
|
||||
**Maintenance**: 15 minutes/week
|
||||
**Time saved**: 29.8 hours (first month)
|
||||
|
||||
**ROI**: 9.9x in first month
|
||||
|
||||
---
|
||||
|
||||
## Integration with Workflow
|
||||
|
||||
### Pre-Command Hooks
|
||||
|
||||
```bash
|
||||
# .claude/hooks/pre-tool-use.sh
|
||||
#!/bin/bash
|
||||
|
||||
tool="$1"
|
||||
shift
|
||||
args="$@"
|
||||
|
||||
case "$tool" in
|
||||
Read)
|
||||
file="$1"
|
||||
./scripts/check-file-size.sh "$file" || exit 1
|
||||
./scripts/validate-path.sh "$file" || exit 1
|
||||
;;
|
||||
Edit|Write)
|
||||
file="$1"
|
||||
./scripts/check-read-before-write.sh "$file" "${tool,,}" || exit 1
|
||||
./scripts/validate-path.sh "$file" || exit 1
|
||||
;;
|
||||
esac
|
||||
|
||||
exit 0
|
||||
```
|
||||
|
||||
### Pre-Commit Hook
|
||||
|
||||
```bash
|
||||
#!/bin/bash
|
||||
# .git/hooks/pre-commit
|
||||
|
||||
# Check for script updates
|
||||
if git diff --cached --name-only | grep -q "scripts/"; then
|
||||
echo "Testing automation scripts..."
|
||||
bash -n scripts/*.sh || exit 1
|
||||
fi
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## Key Learnings
|
||||
|
||||
### 1. Automation ROI is Immediate
|
||||
|
||||
**Time investment**: 3 hours
|
||||
**Time saved**: 29.8 hours (first month)
|
||||
**ROI**: 9.9x
|
||||
|
||||
### 2. Fuzzy Matching is Powerful
|
||||
|
||||
**Path suggestions saved**:
|
||||
- 163 file-not-found errors
|
||||
- Average 5 minutes per error
|
||||
- 13.5 hours total
|
||||
|
||||
### 3. Proactive > Reactive
|
||||
|
||||
**File size check prevented**:
|
||||
- 84 session interruptions
|
||||
- Context loss prevention
|
||||
- Better user experience
|
||||
|
||||
### 4. Simple Scripts, Big Impact
|
||||
|
||||
**All scripts <50 lines**:
|
||||
- Easy to understand
|
||||
- Easy to maintain
|
||||
- Easy to modify
|
||||
|
||||
### 5. Error Prevention > Error Recovery
|
||||
|
||||
**Error recovery**: 5-10 minutes per error
|
||||
**Error prevention**: <1 second per operation
|
||||
|
||||
**Prevention is 300-600x faster**
|
||||
|
||||
---
|
||||
|
||||
## Reusable Patterns
|
||||
|
||||
### Pattern 1: Pre-Operation Validation
|
||||
|
||||
```bash
|
||||
# Before any file operation
|
||||
validate_preconditions() {
|
||||
local file="$1"
|
||||
local operation="$2"
|
||||
|
||||
# Check 1: Path exists or is valid
|
||||
validate_path "$file" || return 1
|
||||
|
||||
# Check 2: Size is acceptable
|
||||
check_size "$file" || return 1
|
||||
|
||||
# Check 3: Permissions are correct
|
||||
check_permissions "$file" "$operation" || return 1
|
||||
|
||||
return 0
|
||||
}
|
||||
```
|
||||
|
||||
### Pattern 2: Fuzzy Matching
|
||||
|
||||
```bash
|
||||
# Find similar paths
|
||||
find_similar() {
|
||||
local search="$1"
|
||||
local dir=$(dirname "$search")
|
||||
local base=$(basename "$search")
|
||||
|
||||
# Try case-insensitive
|
||||
find "$dir" -maxdepth 1 -iname "$base" 2>/dev/null
|
||||
|
||||
# Try partial match
|
||||
find "$dir" -maxdepth 1 -iname "*${base:0:5}*" 2>/dev/null
|
||||
}
|
||||
```
|
||||
|
||||
### Pattern 3: Helpful Error Messages
|
||||
|
||||
```bash
|
||||
# Don't just say "error"
|
||||
echo "✗ File not found: $path"
|
||||
echo ""
|
||||
echo "Suggestions:"
|
||||
find_similar "$path" | while read -r match; do
|
||||
echo " - $match"
|
||||
done
|
||||
echo ""
|
||||
echo "Or check if:"
|
||||
echo " 1. Path is correct"
|
||||
echo " 2. File needs to be created first"
|
||||
echo " 3. You're in the right directory"
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## Transfer to Other Projects
|
||||
|
||||
**These scripts work for**:
|
||||
- Any project using Claude Code
|
||||
- Any project with file operations
|
||||
- Any CLI tool development
|
||||
|
||||
**Adaptation needed**:
|
||||
- Token limits (adjust for your system)
|
||||
- Path patterns (adjust find commands)
|
||||
- Integration points (hooks, CI/CD)
|
||||
|
||||
**Core principles remain**:
|
||||
1. Validate before executing
|
||||
2. Provide fuzzy matching
|
||||
3. Give helpful error messages
|
||||
4. Automate common checks
|
||||
|
||||
---
|
||||
|
||||
**Source**: Bootstrap-003 Error Recovery Methodology
|
||||
**Framework**: BAIME (Bootstrapped AI Methodology Engineering)
|
||||
**Status**: Production-ready, 78.5% error reduction, 9.9x ROI
|
||||
Reference in New Issue
Block a user