Initial commit, valiwork as framework is ready to use.

validations.go

@@ -0,0 +1,97 @@
+package valiwork
+
+import (
+	// stdlib
+	"log"
+	"sync"
+
+	// local
+	"go.dev.pztrn.name/valiwork/validators"
+)
+
+var (
+	registeredValidators map[string]validators.ValidatorFunc
+	rvMutex              sync.RWMutex
+)
+
+// nolint
+func init() {
+	initializeValidatorsStorage()
+}
+
+func initializeValidatorsStorage() {
+	registeredValidators = make(map[string]validators.ValidatorFunc)
+}
+
+// RegisterValidator registers validation function for later calling.
+func RegisterValidator(validatorName string, validator validators.ValidatorFunc) error {
+	if DEBUG {
+		log.Println("Trying to register validator: '" + validatorName + "'...")
+	}
+
+	//rvMutex.RLock()
+	_, found := registeredValidators[validatorName]
+	//rvMutex.RUnlock()
+
+	if found {
+		if DEBUG {
+			log.Println("Validator already registered!")
+		}
+
+		return ErrValidatorAlreadyRegistered
+	}
+
+	//rvMutex.Lock()
+	registeredValidators[validatorName] = validator
+	//rvMutex.Unlock()
+
+	return nil
+}
+
+// UnregisterValidator removes registered validator from list of known
+// validators.
+func UnregisterValidator(validatorName string) error {
+	if DEBUG {
+		log.Println("Trying to unregister validator '" + validatorName + "'...")
+	}
+
+	//rvMutex.RLock()
+	_, found := registeredValidators[validatorName]
+	//rvMutex.RUnlock()
+
+	if !found {
+		if DEBUG {
+			log.Println("Validator wasn't registered!")
+		}
+
+		return ErrValidatorNotRegistered
+	}
+
+	//rvMutex.Lock()
+	delete(registeredValidators, validatorName)
+	//rvMutex.Unlock()
+
+	return nil
+}
+
+// Validate launches validation function and returns it's result to
+// caller.
+func Validate(validatorName string, thing interface{}, optional ...interface{}) []interface{} {
+	var errs []interface{}
+
+	//rvMutex.RLock()
+	validator, found := registeredValidators[validatorName]
+	//rvMutex.RUnlock()
+
+	if !found {
+		errs = append(errs, ErrValidatorNotRegistered)
+		return errs
+	}
+
+	errs1 := validator(thing, optional...)
+	if len(errs1) > 0 {
+		errs = append(errs, errs1...)
+	}
+
+	return errs
+}