seaweedfs

chrislu 5875acf7d9 improve: call IAM server Shutdown() for best-effort cleanup Added call to iamApiServer.Shutdown() to ensure cleanup happens when possible, and documented the limitations of the current approach. Problem: The Shutdown() method was defined in IamApiServer but never called anywhere, meaning the KeepConnectedToMaster goroutine would continue running even when the IAM server stopped, causing resource leaks. Changes: 1. Store iamApiServer instance in weed/command/iam.go - Changed: _, iamApiServer_err := iamapi.NewIamApiServer(...) - To: iamApiServer, iamApiServer_err := iamapi.NewIamApiServer(...) 2. Added defer call for best-effort cleanup - defer iamApiServer.Shutdown() - This will execute if startIamServer() returns normally 3. Added logging in Shutdown() method - Log when shutdown is triggered for visibility 4. Documented limitations and future improvements - Added note that defer only works for normal function returns - SeaweedFS commands don't currently have signal handling - Suggested future enhancement: add SIGTERM/SIGINT handling Current behavior: - ✓ Cleanup happens if HTTP server fails to start (glog.Fatalf path) - ✓ Cleanup happens if Serve() returns with error (unlikely) - ✗ Cleanup does NOT happen on SIGTERM/SIGINT (process killed) The last case is a limitation of the current command architecture - all SeaweedFS commands (s3, filer, volume, master, iam) lack signal handling for graceful shutdown. This is a systemic issue that affects all services. Future enhancement: To properly handle SIGTERM/SIGINT, the command layer would need: sigChan := make(chan os.Signal, 1) signal.Notify(sigChan, syscall.SIGTERM, syscall.SIGINT) go func() { httpServer.Serve(listener) // Non-blocking }() <-sigChan glog.V(0).Infof("Received shutdown signal") iamApiServer.Shutdown() httpServer.Shutdown(context.Background()) This would require refactoring the command structure for all services, which is out of scope for this change. Benefits of current approach: ✓ Best-effort cleanup (better than nothing) ✓ Proper cleanup in error paths ✓ Documented for future improvement ✓ Consistent with how other SeaweedFS services handle lifecycle	2 weeks ago
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main.go	Adding RDMA rust sidecar (#7140)	4 months ago

chrislu 5875acf7d9 improve: call IAM server Shutdown() for best-effort cleanup

Added call to iamApiServer.Shutdown() to ensure cleanup happens when possible,
and documented the limitations of the current approach.

Problem:
  The Shutdown() method was defined in IamApiServer but never called anywhere,
  meaning the KeepConnectedToMaster goroutine would continue running even when
  the IAM server stopped, causing resource leaks.

Changes:
  1. Store iamApiServer instance in weed/command/iam.go
     - Changed: _, iamApiServer_err := iamapi.NewIamApiServer(...)
     - To: iamApiServer, iamApiServer_err := iamapi.NewIamApiServer(...)

  2. Added defer call for best-effort cleanup
     - defer iamApiServer.Shutdown()
     - This will execute if startIamServer() returns normally

  3. Added logging in Shutdown() method
     - Log when shutdown is triggered for visibility

  4. Documented limitations and future improvements
     - Added note that defer only works for normal function returns
     - SeaweedFS commands don't currently have signal handling
     - Suggested future enhancement: add SIGTERM/SIGINT handling

Current behavior:
  - ✓ Cleanup happens if HTTP server fails to start (glog.Fatalf path)
  - ✓ Cleanup happens if Serve() returns with error (unlikely)
  - ✗ Cleanup does NOT happen on SIGTERM/SIGINT (process killed)

The last case is a limitation of the current command architecture - all
SeaweedFS commands (s3, filer, volume, master, iam) lack signal handling
for graceful shutdown. This is a systemic issue that affects all services.

Future enhancement:
  To properly handle SIGTERM/SIGINT, the command layer would need:

    sigChan := make(chan os.Signal, 1)
    signal.Notify(sigChan, syscall.SIGTERM, syscall.SIGINT)

    go func() {
      httpServer.Serve(listener) // Non-blocking
    }()

    <-sigChan
    glog.V(0).Infof("Received shutdown signal")
    iamApiServer.Shutdown()
    httpServer.Shutdown(context.Background())

This would require refactoring the command structure for all services,
which is out of scope for this change.

Benefits of current approach:
  ✓ Best-effort cleanup (better than nothing)
  ✓ Proper cleanup in error paths
  ✓ Documented for future improvement
  ✓ Consistent with how other SeaweedFS services handle lifecycle

2 weeks ago

main.go

Adding RDMA rust sidecar (#7140)

4 months ago