Errs module

src/apps/apperrs/main.go

@@ -56,22 +56,7 @@ import (
 )
 
 func main() {
-	baseErr := errs.Code("auth::err_auth")
 
-	err := errs.WithMessage(
-		errs.WithCause(
-			errs.WithSeverity(
-				errs.WithStack(baseErr),
-				errs.SeverityCritical,
-			),
-			errs.WithCauses(
-				errors.New("db error"),
-				errors.New("sql error")),
-		),
-		"authentication failed",
-	)
-
-	errs.NewTree(err).Print(os.Stdout)
 
 	otro := errs.Add(
 		errs.Code("::Mi_otro_error"),
@@ -81,9 +66,13 @@ func main() {
 		errs.AddCauses(
 			errors.New("::db error"),
 			errors.New("::sql error"),
-			errs.WithStack(errs.WithMessage(errs.Code("::error_cause"),"Esto es un mensaje %d ",3333))))
+			errs.WithStack(
+				errs.WithCause(
+					errs.WithMessage(
+						errs.Code("::error_cause"),"Esto es un mensaje %d ",3333),
+						errs.WithStack(errs.Code("POr otro error"),10)))))
 
-	errs.NewTree(otro).Print(os.Stdout)
+	errs.NewTree(otro,errs.WithMaxStackDepth(-1)).Print(os.Stdout)
 
 
 

src/core/errs/a.go

@@ -66,6 +66,12 @@ const (
 
 
 var (
+	paramRgx     = regexp.MustCompile(`^[a-zA-Z][a-zA-Z0-9_]{0,62}[a-zA-Z0-9]$`)
+	metaRgx      = regexp.MustCompile(`^[a-zA-Z_][a-zA-Z0-9_-]{0,62}[a-zA-Z0-9_]$`)
+	codeRgx      = regexp.MustCompile(`^[a-zA-Z0-9](?:[a-zA-Z0-9_-]*[a-zA-Z0-9])?$`)
+	severityName = []string{"UNKNOWN", "DEBUG", "INFO", "WARNING", "ERROR", "CRITICAL", "FATAL"}
+
+
 	// Global sentinels (no module prefix)
 	ErrNilError = Code(RootModule + ModuleSep + "nil-error")
 	ErrNilCause = Code(RootModule + ModuleSep + "nil-cause")
@@ -76,10 +82,9 @@ var (
 	ErrInvalidMetaName  = Code(ErrsModule + ModuleSep + "invalid-meta-name")
 	ErrInvalidParamName = Code(ErrsModule + ModuleSep + "invalid-param-name")
 
-	paramRgx     = regexp.MustCompile(`^[a-zA-Z][a-zA-Z0-9_]{0,62}[a-zA-Z0-9]$`)
-	metaRgx      = regexp.MustCompile(`^[a-zA-Z_][a-zA-Z0-9_-]{0,62}[a-zA-Z0-9_]$`)
-	codeRgx      = regexp.MustCompile(`^[a-zA-Z0-9](?:[a-zA-Z0-9_-]*[a-zA-Z0-9])?$`)
-	severityName = []string{"UNKNOWN", "DEBUG", "INFO", "WARNING", "ERROR", "CRITICAL", "FATAL"}
+	ErrorExtractors 	= NewExtractors()
+
+
 )
 
 func isValidSegment(code string) bool { return len(code) > 0 && codeRgx.MatchString(code) }

src/core/errs/extractor.go

@@ -0,0 +1,68 @@
+/* ——————————————————————————————————————————————————————————————————————————
+ Proyecto FWS
+—————————————————————————————————————————————————————————————————————————————
+ Fichero  extractor.go
+ Package  errs
+ Autor    Juan V. Navarro juanvnl@activething.com
+ Creado   24/01/2026
+—————————————————————————————————————————————————————————————————————————————
+
+ LICENSES AND TERMS OF USE
+ -------------------------
+
+ This software is licensed under the Elastic License v2.0 (the "License").
+ For full terms and additional information regarding permitted and prohibited
+ uses, please visit:
+     https://activething.com/ATGO/licenses
+
+ You may use, copy, modify, and redistribute this software internally within
+ your organization for any purpose, including research, development, and
+ testing, subject to the terms of this License.
+
+ You may NOT, however, use, provide, distribute, or make this software
+ available to any third party as part of a hosted service, SaaS offering, or
+ commercial product without first obtaining a commercial license from
+ Active Thing.
+
+ You may combine this software with other code, provided that such
+ combination does not circumvent the restrictions of this License.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. In no event shall
+ the authors or copyright holders be liable for any claim, damages, or other
+ liability arising from the use of this software.
+
+—————————————————————————————————————————————————————————————————————————————
+
+ Web    :   activething.com     |   activething.com/FWS
+ git    :   g.activething.com   |   github.com/activething/FWS
+ Correo	:   dev@activething.com
+
+—————————————————————————————————————————————————————————————————————————————
+            No deseo caminar sobre el agua", dijo Siddhartha.
+            Que los antiguos chamanes se contenten con tales habilidades.
+            —— Hermann Hesse, Siddhartha
+—————————————————————————————————————————————————————————————————————————————
+ Copyright (c) 2026 Active Thing
+————————————————————————————————————————————————————————————————————————————— */
+
+package errs
+
+
+
+type (
+
+	Extractor 	interface {
+		Extract (err error, collector Collector)
+	}
+
+	ExtractFnc func(err error, collector Collector)
+)
+
+
+func (f ExtractFnc) Extract(err error, collector Collector) { f(err, collector) }
+
+
+
+

src/core/errs/extractors.go

@@ -0,0 +1,81 @@
+/* ——————————————————————————————————————————————————————————————————————————
+ Proyecto FWS
+—————————————————————————————————————————————————————————————————————————————
+ Fichero  Extractors.go
+ Package  errs
+ Autor    Juan V. Navarro juanvnl@activething.com
+ Creado   24/01/2026
+—————————————————————————————————————————————————————————————————————————————
+
+ LICENSES AND TERMS OF USE
+ -------------------------
+
+ This software is licensed under the Elastic License v2.0 (the "License").
+ For full terms and additional information regarding permitted and prohibited
+ uses, please visit:
+     https://activething.com/ATGO/licenses
+
+ You may use, copy, modify, and redistribute this software internally within
+ your organization for any purpose, including research, development, and
+ testing, subject to the terms of this License.
+
+ You may NOT, however, use, provide, distribute, or make this software
+ available to any third party as part of a hosted service, SaaS offering, or
+ commercial product without first obtaining a commercial license from
+ Active Thing.
+
+ You may combine this software with other code, provided that such
+ combination does not circumvent the restrictions of this License.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. In no event shall
+ the authors or copyright holders be liable for any claim, damages, or other
+ liability arising from the use of this software.
+
+—————————————————————————————————————————————————————————————————————————————
+
+ Web    :   activething.com     |   activething.com/FWS
+ git    :   g.activething.com   |   github.com/activething/FWS
+ Correo	:   dev@activething.com
+
+—————————————————————————————————————————————————————————————————————————————
+            No deseo caminar sobre el agua", dijo Siddhartha.
+            Que los antiguos chamanes se contenten con tales habilidades.
+            —— Hermann Hesse, Siddhartha
+—————————————————————————————————————————————————————————————————————————————
+ Copyright (c) 2026 Active Thing
+————————————————————————————————————————————————————————————————————————————— */
+
+package errs
+
+import "sync"
+
+type Extractors struct {
+	rw 	sync.RWMutex
+	extractors []Extractor
+}
+
+
+
+func NewExtractors() *Extractors { return &Extractors{} }
+
+
+func (e *Extractors) AddExtractors(extractors ... Extractor) {
+	if len(extractors) == 0 { return }
+	e.rw.Lock(); defer e.rw.Unlock()
+	for _,x := range extractors {
+		if x != nil { e.extractors = append(e.extractors, x) }
+	}
+}
+
+func (e *Extractors) Extract (err error, collector Collector) {
+	e.rw.RLock()
+	defer e.rw.RUnlock()
+	for _,x := range e.extractors { x.Extract(err,collector) }
+}
+
+
+
+
+

src/core/errs/tree.go

@@ -59,22 +59,17 @@ import (
 const MaxDeep = 32
 
 
-const (
-	StackStrategyNone uint8 = iota
-	StackStrategyTop                 // Solo el primer stack encontrado
-	StackStrategyRoot                // Solo el último stack (el más profundo)
-	StackStrategyAll                 // Todos los stack disponibles se recopilan
-)
-
 type (
 	Tree struct {
+		maxExtDepth 	int		// Define si se van a usar extractores (-1) si a todos los niveles (0) ninguno (x) hasta ese nivel
 		maxDepth   	 	int
-		// Define hasta que profundidad del arbol de causas se recopilaran metas
-		maxMetaDepth 	int
-		// Define hasta que profundidad del arbol se añadira la pila
-		maxStackDepth	int
-		// define la estrategia de incorporar el stack al arbol
-		stackStrategy 	uint8
+		maxMetaDepth 	int		// Define hasta que profundidad del arbol de causas se recopilaran metas
+		// Control Vertical (Profundidad del árbol)
+		// -1: Infinito (captura en todos los niveles)
+		//  0: Off (no captura stacks en absoluto)
+		// >0: Captura hasta el nivel N (ej: 1 = solo raíz)
+		maxStackDepth 	int		// Define hasta que profundidad del arbol se añadira la pila
+		stackFirst	 	bool	// indica true que el primer stack que se captura es el primero, si no es el ultimo, solo se captura uno por nivel de nodo
 
 		root    *TreeNode
 	}
@@ -83,9 +78,11 @@ type (
 
 func NewTree(err error, ops ...opts.Option[Tree]) *Tree {
 	tree := opts.Options[Tree](ops).ApplyAndRet (&Tree{
+		maxExtDepth  : MaxDeep,
 		maxDepth	 : MaxDeep,
 		maxMetaDepth : MaxDeep,
-		stackStrategy: StackStrategyTop,
+		maxStackDepth: MaxDeep,
+		stackFirst   : true,
 	})
 	tree.root = newTreeNode(err,0,tree)
 	return tree
@@ -132,74 +129,108 @@ func (t *Tree) String() string {
 
 
 
-// RenderTree imprime la jerarquía de errores de manera más visual y semántica.
-// Representa solo las causas como árbol. Metas y stack como atributos del nodo.
+// RenderTree imprime la jerarquía de errores de manera visual y semántica.
 // Iconos:
-//   ❌ error
-//   ℹ️ meta
-//   ⚠️ stack
+//   ❌ Error
+//   ℹ️ Meta / atributo
+//   ⚠️ Stack
 // Conectores para causas:
 //   ├─▶  (child)
 //   └─▶  (last)
-
 func RenderTree(t *Tree, w io.Writer) error {
-	var walker func(*TreeNode, string, bool) error
-
-	walker = func(n *TreeNode, prefix string, isLast bool) error {
-		// Dibujar línea actual
-		connector := "├── "
-		if isLast {
-			connector = "└── "
+	var walk func(n *TreeNode, indent string, indent_width int, hasSibling bool, isRoot bool) error
+
+	walk = func(n *TreeNode, indent string, indent_width int, hasSibling bool, isRoot bool) error {
+		// --- imprimir nodo ---
+		var pre_width int
+		if isRoot {
+			fmt.Fprintf(w, "❌ %v\n", n.Err)
+			pre_width = 3 // width of "❌ " (2 for emoji + 1 for space)
+		} else {
+			conn := "├─▶ "
+			conn_width := 4 // width of "├─▶ " or "└─▶ "
+			if !hasSibling {
+				conn = "└─▶ "
+			}
+			fmt.Fprintf(w, "%s%s❌ %v\n", indent, conn, n.Err)
+			pre_width = indent_width + conn_width + 3 // +3 for "❌ "
 		}
 
-		if _, err := fmt.Fprintf(w, "%s%s%v\n", prefix, connector, n.Err); err != nil {
-			return err
+		attrIndent := strings.Repeat(" ", pre_width)
+
+		// --- imprimir metas ---
+		for _, meta := range n.Metas {
+			fmt.Fprintf(w, "%sℹ️ %s = %v\n", attrIndent, meta.Name(), meta.Value())
 		}
 
-		// Preparar prefijo para hijos
-		newPrefix := prefix
-		if isLast {
-			newPrefix += "    "
+		// --- imprimir stack ---
+		if len(n.Stack) > 0 {
+			frames := n.Stack.Frames()
+			fmt.Fprintf(w, "%s⚠️ stack (%d frames)\n", attrIndent, len(frames))
+			for _, frame := range frames {
+				fmt.Fprintf(w, "%s    %s:%d %s\n", attrIndent, shortenPath(frame.File), frame.LineNumber, frame.FuncName)
+			}
+		}
+
+		// --- recorrer hijos ---
+		for i, c := range n.Causes {
+			last := i == len(n.Causes)-1
+			// calcular indent para hijos
+			childIndent := indent
+			childWidth := indent_width
+			if !isRoot {
+				if hasSibling {
+					childIndent += "│   "
+					childWidth += 4
 				} else {
-			newPrefix += "│   "
+					childIndent += "    "
+					childWidth += 4
 				}
-
-
-		// All Metas (current)
-		for i, meta := range n.Metas {
-			isLastMeta := i == len(n.Metas)-1 && len(n.Causes) == 0 && len(n.Stack) != 0
-			metaMarker := "├── "
-			if isLastMeta {
-				metaMarker = "└── "
 			}
-			fmt.Fprintf(w, "%s%s[%s: %v]\n", newPrefix, metaMarker, meta.Name(), meta.Value())
+			if err := walk(c, childIndent, childWidth, !last, false); err != nil {
+				return err
 			}
-
-		// Stack (current)
-		if len(n.Stack) != 0 {
-			isLastStack := len(n.Causes) == 0
-			stackMarker := "├── "
-			if isLastStack {
-				stackMarker = "└── "
 		}
-			frames := n.Stack.Frames()
-			fmt.Fprintf(w, "%s%s[stack: %d frames]\n", newPrefix, stackMarker, len(frames))
-			for i := 0; i < len(frames) && i < 3; i++ {
-				frame := frames[i]
-				fmt.Fprintf(w, "%s    %s:%d %s\n", newPrefix, shortenPath(frame.File), frame.LineNumber, frame.FuncName)
+
+		return nil
 	}
+
+	return walk(t.root, "", 0, false, true)
 }
 
 
-		// Recorrer hijos
-		for i, child := range n.Causes {
-			lastChild := i == len(n.Causes)-1
-			if err := walker(child, newPrefix, lastChild); err != nil {
-				return err
+
+// WithMaxDepth establece el límite máximo de profundidad para causas en el árbol.
+// Usa -1 para ilimitado (UnlimitedDepth).
+func WithMaxDepth(depth int) opts.Option[Tree] {
+	if depth < -1 { depth = 0 }
+	return func(t *Tree) { t.maxDepth = depth }}
+
+
+// WithMaxMetaDepth establece el límite de profundidad para recopilar metas.
+// Usa -1 para ilimitado.
+func WithMaxMetaDepth(depth int) opts.Option[Tree] {
+	if depth < -1 { depth = 0 }
+	return func(t *Tree) { t.maxMetaDepth = depth }}
+
+
+// WithMaxStackDepth establece el límite de profundidad para recopilar stacks.
+// Usa -1 para ilimitado.
+func WithMaxStackDepth(depth int) opts.Option[Tree] {
+	if depth < -1 { depth = 0 }
+	return func(t *Tree) { t.maxStackDepth = depth }}
+
+
+// WithStackFirst establece la estrategia para incorporar stacks al árbol.
+func WithStackFirst(first bool) opts.Option[Tree] {
+	return func(t *Tree) { t.stackFirst = first }
 }
+
+
+func WithExtractors (depth int) opts.Option[Tree] {
+	if depth < -1 { depth = 0 }
+	return func(t *Tree) {
+		t.maxExtDepth = depth
 	}
-		return nil
 }
 
-	return walker(t.root, "", true)
-}

src/core/errs/tree_node.go

@@ -51,6 +51,7 @@ package errs
 
 import (
 	"errors"
+	"fmt"
 )
 
 type TreeNode struct {
@@ -80,7 +81,9 @@ func newTreeNode (err error, level int, tree *Tree) *TreeNode {
 		}
 		// intentamos extraer meta informacion de el error por otros
 		// medios y extractores definidos a nivel global
-		// TODO
+		if tree.maxExtDepth != 0 && level < tree.maxExtDepth {
+			ErrorExtractors.Extract(e,node)
+		}
 	}
 
 	return node
@@ -114,26 +117,26 @@ func (n *TreeNode) AddCauses(causes ...error) {
 	}
 }
 
-
 func (n *TreeNode) AddStack(stack Stack) {
-	if stack == nil || n.tree.stackStrategy == StackStrategyNone {
+	fmt.Println("CXaptturando stack %d level %d\n",n.tree.stackFirst,n.tree.stackFirst)
+	// 1. VALIDACIÓN GLOBAL (Nivel 0 = OFF)
+	// 2. VALIDACIÓN VERTICAL (Profundidad)
+	// Si NO es infinito (-1) Y el nivel actual supera o iguala el límite.
+	// Ej: maxStackDepth=1. Acepta nivel 0. Rechaza nivel 1.
+	if stack == nil || n.tree.maxStackDepth == 0 || (n.tree.maxStackDepth > 0 && n.level >= n.tree.maxStackDepth) {
 		return
 	}
 
-	// Filtro por profundidad de stack
-	if n.tree.maxStackDepth != -1 && n.level > n.tree.maxStackDepth {
-		return
+	// 3. VALIDACIÓN HORIZONTAL (Linealidad dentro del nodo)
+	if n.tree.stackFirst {
+		if n.Stack == nil {
+			n.Stack = stack
 		}
-
-	// Aplicación de estrategia (Ejemplo: Top solo en nivel 0)
-	if n.tree.stackStrategy == StackStrategyTop && n.level != 0 {
 		return
 	}
 
-	// Evitamos sobrescribir si ya tiene stack (o permitimos append según lógica deseada)
-	if len(n.Stack) == 0 {
 	n.Stack = stack
-	}
+
 }