Thales Maciel
08ef706e3f
Remind users when a VM is still running after hanger vm ssh exits instead of silently dropping them back to the host shell.\n\nAttach a Firecracker vsock device to each VM, persist the host vsock path/CID,\nadd a new guest-side banger-vsock-pingd responder to the runtime bundle and both\nimage-build paths, and expose a vm.ping RPC that the CLI and TUI call after SSH\nreturns. Doctor and start/build preflight now validate the helper plus\n/dev/vhost-vsock so the feature fails early and clearly.\n\nValidated with go mod tidy, bash -n customize.sh, git diff --check, make build,\nand GOCACHE=/tmp/banger-gocache go test ./... outside the sandbox because the\ndaemon tests need real Unix/UDP sockets. Rebuild the image/rootfs used for new\nVMs so the guest ping service is present.
49 lines
1,020 B
Go
49 lines
1,020 B
Go
package main
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import (
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"context"
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"errors"
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"fmt"
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"io"
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"net"
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"os"
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"os/signal"
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"syscall"
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"time"
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sdkvsock "github.com/firecracker-microvm/firecracker-go-sdk/vsock"
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"github.com/sirupsen/logrus"
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"banger/internal/vsockping"
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)
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func main() {
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ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
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defer cancel()
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logger := logrus.New()
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logger.SetOutput(io.Discard)
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listener, err := sdkvsock.Listener(ctx, logrus.NewEntry(logger), vsockping.Port)
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if err != nil {
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fmt.Fprintf(os.Stderr, "banger-vsock-pingd: %v\n", err)
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os.Exit(1)
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}
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defer listener.Close()
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for {
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conn, err := listener.Accept()
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if err != nil {
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if ctx.Err() != nil || errors.Is(err, net.ErrClosed) {
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return
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}
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fmt.Fprintf(os.Stderr, "banger-vsock-pingd: accept: %v\n", err)
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time.Sleep(200 * time.Millisecond)
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continue
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}
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go func(conn net.Conn) {
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if err := vsockping.ServeConn(conn); err != nil {
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fmt.Fprintf(os.Stderr, "banger-vsock-pingd: %v\n", err)
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}
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}(conn)
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}
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}
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