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87 lines
2.2 KiB
Go
87 lines
2.2 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package volume
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import (
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"fmt"
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)
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const (
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// ErrCodeNotSupported code for NotSupported Errors.
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ErrCodeNotSupported int = iota + 1
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ErrCodeNoPathDefined
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ErrCodeFsInfoFailed
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)
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// NewNotSupportedError creates a new MetricsError with code NotSupported.
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func NewNotSupportedError() *MetricsError {
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return &MetricsError{
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Code: ErrCodeNotSupported,
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Msg: "metrics are not supported for MetricsNil Volumes",
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}
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}
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// NewNotSupportedErrorWithDriverName creates a new MetricsError with code NotSupported.
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// driver name is added to the error message.
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func NewNotSupportedErrorWithDriverName(name string) *MetricsError {
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return &MetricsError{
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Code: ErrCodeNotSupported,
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Msg: fmt.Sprintf("metrics are not supported for %s volumes", name),
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}
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}
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// NewNoPathDefinedError creates a new MetricsError with code NoPathDefined.
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func NewNoPathDefinedError() *MetricsError {
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return &MetricsError{
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Code: ErrCodeNoPathDefined,
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Msg: "no path defined for disk usage metrics.",
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}
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}
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// NewFsInfoFailedError creates a new MetricsError with code FsInfoFailed.
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func NewFsInfoFailedError(err error) *MetricsError {
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return &MetricsError{
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Code: ErrCodeFsInfoFailed,
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Msg: fmt.Sprintf("failed to get FsInfo due to error %v", err),
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}
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}
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// MetricsError to distinguish different Metrics Errors.
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type MetricsError struct {
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Code int
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Msg string
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}
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func (e *MetricsError) Error() string {
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return e.Msg
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}
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// IsNotSupported returns true if and only if err is "key" not found error.
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func IsNotSupported(err error) bool {
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return isErrCode(err, ErrCodeNotSupported)
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}
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func isErrCode(err error, code int) bool {
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if err == nil {
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return false
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}
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if e, ok := err.(*MetricsError); ok {
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return e.Code == code
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}
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return false
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}
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