Thales Maciel
3ed78fdcfc
Make iterating on a Firecracker-friendly Void guest practical without replacing the Debian default image path. Add local Void rootfs build/register/verify plumbing, a language-agnostic dev package baseline, and guest SSH/work-disk hardening so new images use the runtime bundle key, keep a normal root bash environment, and repair stale nested /root layouts on restart. Replace the guest PING/PONG responder with an HTTP /healthz agent over vsock, rename the runtime bundle and config surface from ping helper to agent while still accepting the legacy keys, and route the post-SSH reminder through the new vm.health path. Validated with GOCACHE=/tmp/banger-gocache go test ./..., make build, bash -n customize.sh make-rootfs-void.sh, and git diff --check.
58 lines
1.3 KiB
Go
58 lines
1.3 KiB
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/http"
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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/vsockagent"
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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), vsockagent.Port)
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if err != nil {
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fmt.Fprintf(os.Stderr, "banger-vsock-agent: %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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server := &http.Server{
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Handler: vsockagent.NewHandler(),
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ReadHeaderTimeout: 3 * time.Second,
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}
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errCh := make(chan error, 1)
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go func() {
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errCh <- server.Serve(listener)
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}()
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select {
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case <-ctx.Done():
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shutdownCtx, shutdownCancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer shutdownCancel()
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_ = server.Shutdown(shutdownCtx)
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if err := <-errCh; err != nil && !errors.Is(err, http.ErrServerClosed) {
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fmt.Fprintf(os.Stderr, "banger-vsock-agent: %v\n", err)
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os.Exit(1)
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}
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case err := <-errCh:
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if err != nil && !errors.Is(err, http.ErrServerClosed) {
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fmt.Fprintf(os.Stderr, "banger-vsock-agent: %v\n", err)
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os.Exit(1)
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}
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}
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}
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