forked from rook/rook
Blaine Gardner
5411fe4cde
cmd-reporter runs a command and puts the results of the command into a ConfigMap defined by its `--config-map-name` commandline flag. cmd-reporter is intended to be run as a Kubernetes job where an operator needs to run a single command and get return information back from the command which is more than just success/failure. The ConfigMap returned includes `stdout`, `stderr`, and `retcode` data from the command. The ConfigMap may be preexisting, in which case cmd-reporter will overwrite the return information in the ConfigMap. cmd-reporter labels the ConfigMap with `app=cmd-reporter`, and if the ConfigMap already has an app label which is different, cmd-reporter fails without modifying the ConfigMap so as not to overwrite another application's data in the event of a ConfigMap name+namespace collision. Signed-off-by: Blaine Gardner <blaine.gardner@suse.com>
72 lines
1.8 KiB
Go
72 lines
1.8 KiB
Go
/*
|
|
Copyright 2019 The Rook 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 util
|
|
|
|
import (
|
|
"io"
|
|
"os"
|
|
"os/exec"
|
|
"path"
|
|
)
|
|
|
|
// override these for unit testing
|
|
var defaultRookDir = "/usr/local/bin"
|
|
var defaultTiniDir = "/"
|
|
|
|
// CopyBinaries copies the "tini" and "rook" binaries to a shared volume at the target path.
|
|
func CopyBinaries(target string) error {
|
|
if err := copyBinary(defaultRookDir, target, "rook"); err != nil {
|
|
return err
|
|
}
|
|
return copyBinary(defaultTiniDir, target, "tini")
|
|
}
|
|
|
|
func copyBinary(sourceDir, targetDir, filename string) error {
|
|
sourcePath := path.Join(sourceDir, filename)
|
|
targetPath := path.Join(targetDir, filename)
|
|
logger.Infof("copying %s to %s", sourcePath, targetPath)
|
|
|
|
// Check if the source path exists, and look in PATH if it doesn't
|
|
if _, err := os.Stat(sourcePath); err != nil {
|
|
if sourcePath, err = exec.LookPath(filename); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
// Check if the target path exists, and skip the copy if it does
|
|
if _, err := os.Stat(targetPath); err == nil {
|
|
return nil
|
|
}
|
|
|
|
sourceFile, err := os.Open(sourcePath)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer sourceFile.Close()
|
|
|
|
destinationFile, err := os.Create(targetPath)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer destinationFile.Close()
|
|
if _, err := io.Copy(destinationFile, sourceFile); err != nil {
|
|
return err
|
|
}
|
|
|
|
return os.Chmod(targetPath, 0755)
|
|
}
|