Nomad changes

docs/snippets/go/plugins/min_length_validator.md

@@ -0,0 +1,72 @@
+```go title="Go"
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"unsafe"
+
+	"github.com/kreuzberg-dev/kreuzberg/packages/go/v5"
+)
+
+/*
+#cgo CFLAGS: -I${SRCDIR}/../../../crates/kreuzberg-ffi
+#cgo LDFLAGS: -L${SRCDIR}/../../../target/release -L${SRCDIR}/../../../target/debug -lkreuzberg_ffi
+#include "../../../crates/kreuzberg-ffi/kreuzberg.h"
+#include <stdlib.h>
+*/
+import "C"
+
+// minLengthConfig holds the configuration for the minimum length validator
+var minLengthConfig = struct {
+	minLength int
+}{
+	minLength: 100,
+}
+
+// minLengthValidator validates that extracted content meets minimum length requirement
+//export minLengthValidator
+func minLengthValidator(resultJSON *C.char) *C.char {
+	jsonStr := C.GoString(resultJSON)
+	var result map[string]interface{}
+
+	if err := json.Unmarshal([]byte(jsonStr), &result); err != nil {
+		return C.CString("Failed to parse result JSON")
+	}
+
+	content, ok := result["content"].(string)
+	if !ok {
+		return C.CString("Missing content field in result")
+	}
+
+	if len(content) < minLengthConfig.minLength {
+		errMsg := fmt.Sprintf("Content too short: %d < %d", len(content), minLengthConfig.minLength)
+		return C.CString(errMsg)
+	}
+
+	// Validation passed
+	return nil
+}
+
+func main() {
+	// Register the validator with priority 100 (runs early)
+	if err := kreuzberg.RegisterValidator("min_length_validator", 100,
+		(C.ValidatorCallback)(C.minLengthValidator)); err != nil {
+		log.Fatalf("failed to register validator: %v", err)
+	}
+	defer func() {
+		if err := kreuzberg.UnregisterValidator("min_length_validator"); err != nil {
+			log.Printf("warning: failed to unregister validator: %v", err)
+		}
+	}()
+
+	// Extract and validate
+	result, err := kreuzberg.ExtractFileSync("document.pdf", nil)
+	if err != nil {
+		log.Fatalf("extraction failed: %v", err)
+	}
+
+	log.Printf("Validation passed. Content length: %d", len(result.Content))
+}
+```