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files.go
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files.go
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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
package conditions
import (
"context"
"fmt"
"os"
"time"
"github.com/siderolabs/gen/xslices"
)
type file string
func (filename file) Wait(ctx context.Context) error {
ticker := time.NewTicker(time.Second)
defer ticker.Stop()
for {
_, err := os.Stat(string(filename))
if err == nil {
return nil
}
if !os.IsNotExist(err) {
return err
}
select {
case <-ctx.Done():
return ctx.Err()
case <-ticker.C:
}
}
}
func (filename file) String() string {
return fmt.Sprintf("file %q to exist", string(filename))
}
// WaitForFileToExist is a service condition that will wait for the existence of
// a file.
func WaitForFileToExist(filename string) Condition {
return file(filename)
}
// WaitForFilesToExist is a service condition that will wait for the existence of all the files.
func WaitForFilesToExist(filenames ...string) Condition {
conditions := xslices.Map(filenames, WaitForFileToExist)
return WaitForAll(conditions...)
}