forked from casbin/casbin
/
enforcer_safe.go
81 lines (71 loc) · 1.86 KB
/
enforcer_safe.go
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// Copyright 2017 The casbin Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package casbin
import "errors"
// NewEnforcerSafe calls NewEnforcer in a safe way, returns error instead of causing panic.
func NewEnforcerSafe(params ...interface{}) (e *Enforcer, err error) {
defer func() {
if r := recover(); r != nil {
switch x := r.(type) {
case string:
err = errors.New(x)
case error:
err = x
default:
err = errors.New("Unknown panic")
}
e = nil
}
}()
e = NewEnforcer(params...)
err = nil
return
}
// LoadModelSafe calls LoadModel in a safe way, returns error instead of causing panic.
func (e *Enforcer) LoadModelSafe() (err error) {
defer func() {
if r := recover(); r != nil {
switch x := r.(type) {
case string:
err = errors.New(x)
case error:
err = x
default:
err = errors.New("Unknown panic")
}
}
}()
e.LoadModel()
err = nil
return
}
// EnforceSafe calls Enforce in a safe way, returns error instead of causing panic.
func (e *Enforcer) EnforceSafe(rvals ...interface{}) (result bool, err error) {
defer func() {
if r := recover(); r != nil {
switch x := r.(type) {
case string:
err = errors.New(x)
case error:
err = x
default:
err = errors.New("Unknown panic")
}
result = false
}
}()
result = e.Enforce(rvals...)
err = nil
return
}