cert-manager/hack/release/pkg/util/exec.go
James Munnelly 465d0032a0 Add missing boilerplate headers
Signed-off-by: James Munnelly <james@munnelly.eu>
2019-05-03 11:16:25 +01:00

66 lines
1.9 KiB
Go

/*
Copyright 2019 The Jetstack cert-manager contributors.
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"
"os"
"os/exec"
"github.com/go-logr/logr"
logf "github.com/jetstack/cert-manager/hack/release/pkg/log"
)
func RunE(log logr.Logger, cmd *exec.Cmd) error {
// debug mode logs directly to stdout/stderr
if log.V(logf.LogLevelTrace).Enabled() {
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
log = log.WithValues("command", append([]string{cmd.Path}, cmd.Args[1:]...))
log.V(logf.LogLevelDebug).Info("executing command with default stdout/stderr")
err := cmd.Run()
if err != nil {
return fmt.Errorf("failed to execute command: %v", err)
}
return nil
}
_, err := RunPrintCombined(log, cmd)
return err
}
// RunPrintCombined will run the given command, capturing its output using CombinedOutput.
// If the command execution fails, the command output will be logged to the loggers
// underlying output Writer.
// This function will return the combined output bytes on both failure and success.
func RunPrintCombined(log logr.Logger, cmd *exec.Cmd) ([]byte, error) {
log = log.WithValues("command", append([]string{cmd.Path}, cmd.Args[1:]...))
log.V(logf.LogLevelDebug).Info("executing command")
out, err := cmd.CombinedOutput()
if err != nil {
logf.Output.Write(out)
if len(out) == 0 {
logf.Output.Write([]byte("(no output)"))
}
return out, fmt.Errorf("failed to execute command: %v", err)
}
return out, nil
}