refactor: Enhanced Error Handling and Logging for Process Exit Optimization #1553
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (1)
common/cmd/cmd_app.go (1)
69-81: Consider adding timeout and observability improvements.While the error handling improvements are good, consider these architectural enhancements:
- Add a timeout for the graceful shutdown period
- Add metrics for tracking process termination success/failure rates
- Consider implementing a more robust shutdown sequence with multiple signals (SIGTERM → wait → SIGKILL)
Example implementation pattern:
func (c *Cmd) gracefulShutdown(timeout time.Duration) error { done := make(chan error, 1) go func() { if err := c.app.Process.Signal(syscall.SIGTERM); err != nil { done <- err return } done <- c.app.Process.Wait() }() select { case err := <-done: return err case <-time.After(timeout): return c.app.Process.Kill() } }Would you like me to create a detailed proposal for implementing these improvements?
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📒 Files selected for processing (1)
- common/cmd/cmd_app.go (1 hunks)
🔇 Additional comments (1)
common/cmd/cmd_app.go (1)
63-65: Good cleanup: Removing commented-out code.Removing inactive code improves maintainability and reduces confusion.
| // Attempt graceful shutdown, then fallback to kill if necessary. | ||
| if err = c.app.Process.Signal(syscall.SIGTERM); err != nil { | ||
| log.Error("failed to send SIGTERM, attempting to kill process", "err", err) | ||
| if killErr := c.app.Process.Kill(); killErr != nil { | ||
| log.Error("failed to kill process", "kill error", killErr) | ||
| } | ||
| } else { | ||
| // Use Wait to ensure the process terminates gracefully. | ||
| if waitErr := c.app.Process.Wait(); waitErr != nil { | ||
| log.Error("failed to wait for process termination", "wait error", waitErr) | ||
| } | ||
| } | ||
|
|
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🛠️ Refactor suggestion
Fix missing import and improve error handling structure.
Several issues need to be addressed:
- The
logpackage is used but not imported - The error handling structure could be more idiomatic
- There are inconsistent indentation issues
Apply these changes:
import (
"fmt"
"os"
"strings"
"sync/atomic"
"syscall"
"testing"
"time"
+ "log"
"github.com/stretchr/testify/assert"
)
// In WaitExit method:
- // Attempt graceful shutdown, then fallback to kill if necessary.
- if err = c.app.Process.Signal(syscall.SIGTERM); err != nil {
- log.Error("failed to send SIGTERM, attempting to kill process", "err", err)
- if killErr := c.app.Process.Kill(); killErr != nil {
- log.Error("failed to kill process", "kill error", killErr)
- }
- } else {
- // Use Wait to ensure the process terminates gracefully.
- if waitErr := c.app.Process.Wait(); waitErr != nil {
- log.Error("failed to wait for process termination", "wait error", waitErr)
- }
- }
+ // Attempt graceful shutdown, then fallback to kill if necessary.
+ if err = c.app.Process.Signal(syscall.SIGTERM); err != nil {
+ log.Error("failed to send SIGTERM, attempting to kill process", "err", err)
+ if killErr := c.app.Process.Kill(); killErr != nil {
+ log.Error("failed to kill process", "err", err, "kill_err", killErr)
+ return
+ }
+ return
+ }
+
+ // Wait for process to terminate gracefully
+ if err := c.app.Process.Wait(); err != nil {
+ log.Error("failed to wait for process termination", "err", err)
+ return
+ }Additionally, consider using structured logging with fields consistently across all error messages for better debugging.
Consider using a more robust error handling package like github.com/pkg/errors to provide stack traces and better error context.
Committable suggestion was skipped due to low confidence.
Purpose or design rationale of this PR
Describe your change. Make sure to answer these three questions: What does this PR do? Why does it do it? How does it do it?
Logic optimization and error handling are more detailed,
PR title
Your PR title must follow conventional commits (as we are doing squash merge for each PR), so it must start with one of the following types:
Deployment tag versioning
Has
tagincommon/version.gobeen updated or have you addedbump-versionlabel to this PR?Breaking change label
Does this PR have the
breaking-changelabel?Summary by CodeRabbit
Bug Fixes
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