/
common.go
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/
common.go
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// Copyright Istio Authors
//
// 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 util
import (
"fmt"
"io"
"strings"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
binversion "istio.io/istio/operator/version"
)
var NeverMatch = &metav1.LabelSelector{
MatchLabels: map[string]string{
"istio.io/deactivated": "never-match",
},
}
var ManifestsFlagHelpStr = `Specify a path to a directory of charts and profiles
(e.g. ~/Downloads/istio-` + binversion.OperatorVersionString + `/manifests).`
// CommandParseError distinguishes an error parsing istioctl CLI arguments from an error processing
type CommandParseError struct {
Err error
}
func (c CommandParseError) Error() string {
return c.Err.Error()
}
// Confirm waits for a user to confirm with the supplied message.
func Confirm(msg string, writer io.Writer) bool {
for {
_, _ = fmt.Fprintf(writer, "%s ", msg)
var response string
_, err := fmt.Scanln(&response)
if err != nil {
return false
}
switch strings.ToUpper(response) {
case "Y", "YES":
return true
case "N", "NO":
return false
}
}
}