/
exec.go
89 lines (80 loc) · 2.28 KB
/
exec.go
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/*
* Copyright (c) 2022 The AdvantEDGE 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 utils
import (
"fmt"
"os/exec"
"strings"
"time"
"github.com/spf13/cobra"
)
// ExecuteCmd wraps exec.Command.CombinedOutput with verbosity
func ExecuteCmd(cmd *exec.Cmd, cobraCmd *cobra.Command) (output string, err error) {
err = nil
verbose, _ := cobraCmd.Flags().GetBool("verbose")
if verbose {
fmt.Println("Cmd:", cmd.Args)
}
start := time.Now()
out, err := cmd.CombinedOutput()
elapsed := time.Since(start)
output = string(out)
if verbose {
var r string
if len(output) > 0 {
r = "Result: " + output
} else {
r = "Result: OK"
}
r = FormatResult(r, elapsed, cobraCmd)
fmt.Println(r)
}
return output, err
}
// GetProcess get a running process ID by name
func GetProcess(name string, cobraCmd *cobra.Command) (string, error) {
cmd := exec.Command("pidof", name)
pid, err := ExecuteCmd(cmd, cobraCmd)
if err != nil {
return pid, err
}
pid = strings.TrimSuffix(pid, "\n")
return pid, nil
}
// WaitProcess get a running process ID by name
func WaitProcess(pid string, timeout string, cobraCmd *cobra.Command) error {
cmd := exec.Command("timeout", timeout, "tail", "--pid="+pid, "-f", "/dev/null")
_, err := ExecuteCmd(cmd, cobraCmd)
return err
}
// KillProcess kill a process by PID
func KillProcess(pid string, cobraCmd *cobra.Command) {
cmd := exec.Command("kill", "-9", pid)
_, err := ExecuteCmd(cmd, cobraCmd)
if err != nil {
fmt.Println("Error terminating " + pid)
fmt.Println(err)
}
}
// InterruptProcess SIGINT a process by PID
func InterruptProcess(pid string, cobraCmd *cobra.Command) {
cmd := exec.Command("kill", "-2", pid)
_, err := ExecuteCmd(cmd, cobraCmd)
if err != nil {
fmt.Println("Error interrupting " + pid)
fmt.Println(err)
}
}