/
run.go
101 lines (87 loc) · 2.87 KB
/
run.go
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/*
Copyright The CloudNativePG 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 utils
import (
"bytes"
"errors"
"fmt"
"os/exec"
"time"
"github.com/avast/retry-go/v4"
"github.com/google/shlex"
"github.com/onsi/ginkgo/v2"
)
// RunUnchecked executes a command and process the information
func RunUnchecked(command string) (stdout string, stderr string, err error) {
tokens, err := shlex.Split(command)
if err != nil {
ginkgo.GinkgoWriter.Printf("Error parsing command `%v`: %v\n", command, err)
return "", "", err
}
var outBuffer, errBuffer bytes.Buffer
cmd := exec.Command(tokens[0], tokens[1:]...) // #nosec G204
cmd.Stdout, cmd.Stderr = &outBuffer, &errBuffer
err = cmd.Run()
stdout = outBuffer.String()
stderr = errBuffer.String()
if err != nil {
err = fmt.Errorf("%w - %v", err, stderr)
}
return
}
// RunUncheckedRetry executes a command and process the information with retry
func RunUncheckedRetry(command string) (stdout string, stderr string, err error) {
var tokens []string
tokens, err = shlex.Split(command)
if err != nil {
ginkgo.GinkgoWriter.Printf("Error parsing command `%v`: %v\n", command, err)
return "", "", err
}
var outBuffer, errBuffer bytes.Buffer
err = retry.Do(
func() error {
cmd := exec.Command(tokens[0], tokens[1:]...) // #nosec G204
cmd.Stdout, cmd.Stderr = &outBuffer, &errBuffer
return cmd.Run()
},
retry.Delay(PollingTime*time.Second),
retry.Attempts(RetryAttempts),
retry.DelayType(retry.FixedDelay),
)
stdout = outBuffer.String()
stderr = errBuffer.String()
if err != nil {
err = fmt.Errorf("%w - %v", err, stderr)
}
return
}
// Run executes a command and prints the output when terminates with an error
func Run(command string) (stdout string, stderr string, err error) {
stdout, stderr, err = RunUnchecked(command)
var exerr *exec.ExitError
if errors.As(err, &exerr) {
ginkgo.GinkgoWriter.Printf("RunCheck: %v\nExitCode: %v\n Out:\n%v\nErr:\n%v\n",
command, exerr.ExitCode(), stdout, stderr)
}
return
}
// RunRetry executes a command with retry and prints the output when terminates with an error
func RunRetry(command string) (stdout string, stderr string, err error) {
stdout, stderr, err = RunUncheckedRetry(command)
var exerr *exec.ExitError
if errors.As(err, &exerr) {
ginkgo.GinkgoWriter.Printf("RunCheck: %v\nExitCode: %v\n Out:\n%v\nErr:\n%v\n",
command, exerr.ExitCode(), stdout, stderr)
}
return
}