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aggregateError.go
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/
aggregateError.go
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// Copyright 2014-2017 Spectra Logic Corporation. 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. A copy of the License is located at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// or in the "license" file accompanying this file.
// This file 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 models
import (
"fmt"
"sync"
)
// AggregateError is an error that aggregates multiple errors and is multi thread safe.
type AggregateError struct {
Errors []error
mux sync.RWMutex
}
func (aggregateError *AggregateError) Error() string {
aggregateError.mux.RLock()
defer aggregateError.mux.RUnlock()
msg := fmt.Sprintf("%d error(s) occurred:\n", len(aggregateError.Errors))
for i, err := range aggregateError.Errors {
msg += fmt.Sprintf("%d) %s\n", i + 1, err.Error())
}
return msg
}
// Returns the aggregate error if at least one error exists,
// else returns nil
func (aggregateError *AggregateError) GetErrors() error {
aggregateError.mux.RLock()
defer aggregateError.mux.RUnlock()
if len (aggregateError.Errors) == 0 {
return nil
}
return aggregateError
}
func (aggregateError *AggregateError) Append(err error) {
aggregateError.mux.Lock()
defer aggregateError.mux.Unlock()
if err != nil {
aggregateError.Errors = append(aggregateError.Errors, err)
}
}