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Signed-off-by: Daniel Canter <dcanter@microsoft.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,154 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "io" | ||
| "log" | ||
| "net" | ||
| "os" | ||
| "os/signal" | ||
| "syscall" | ||
|
|
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| "github.com/Microsoft/hcsshim/internal/vm" | ||
| "github.com/Microsoft/hcsshim/internal/vm/remotevm" | ||
| "github.com/urfave/cli" | ||
| ) | ||
|
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| const usage = `remotevm-util is a simple tool to test out remotevm implementations` | ||
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| func main() { | ||
| app := cli.NewApp() | ||
| app.Name = "remotevm-util" | ||
| app.Commands = []cli.Command{ | ||
| launchVMCommand, | ||
| } | ||
| app.Usage = usage | ||
|
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| if err := app.Run(os.Args); err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| } | ||
|
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| const ( | ||
| kernelPath = "kernel" | ||
| initrdPath = "initrd" | ||
| binPath = "binpath" | ||
| ttrpcAddr = "ttrpc" | ||
| vmName = "name" | ||
| ) | ||
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| func listenVsock(ctx context.Context, port uint32, uvm vm.UVM) (net.Listener, error) { | ||
| vmsocket, ok := uvm.(vm.VMSocketManager) | ||
| if !ok { | ||
| return nil, fmt.Errorf("stopping vm socket configuration: %w", vm.ErrNotSupported) | ||
| } | ||
| return vmsocket.VMSocketListen(ctx, vm.VSock, port) | ||
| } | ||
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| var launchVMCommand = cli.Command{ | ||
| Name: "launch", | ||
| Usage: "Launches a VM using the specified kernel and initrd", | ||
| Flags: []cli.Flag{ | ||
| cli.StringFlag{ | ||
| Name: kernelPath, | ||
| Usage: "Specifies path to the kernel to boot off of", | ||
| Required: true, | ||
| }, | ||
| cli.StringFlag{ | ||
| Name: initrdPath, | ||
| Usage: "Specifies path of the initrd to use as the rootfs", | ||
| Required: true, | ||
| }, | ||
| cli.StringFlag{ | ||
| Name: binPath, | ||
| Usage: "Path to the binary implementing the vmservice interface", | ||
| Required: true, | ||
| }, | ||
| cli.StringFlag{ | ||
| Name: vmName, | ||
| Usage: "Specifies the name to use for the VM", | ||
| Required: true, | ||
| }, | ||
| }, | ||
| Action: func(clictx *cli.Context) error { | ||
| // Precomputed default kernel args that are used for LCOW. We can use the same. | ||
| kernelArgs := `panic=-1 root=/dev/foo debug noapic pci=off` | ||
| ctx := context.Background() | ||
| builder, err := remotevm.NewUVMBuilder( | ||
| ctx, | ||
| vmName, | ||
| os.Args[0], | ||
| clictx.String(binPath), | ||
| clictx.String(ttrpcAddr), | ||
| vm.Linux, | ||
| ) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| boot := builder.(vm.BootManager) | ||
| if err := boot.SetLinuxKernelDirectBoot( | ||
| clictx.String(kernelPath), | ||
| clictx.String(initrdPath), | ||
| kernelArgs, | ||
| ); err != nil { | ||
| return fmt.Errorf("failed to set Linux kernel direct boot: %w", err) | ||
| } | ||
|
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| proc := builder.(vm.ProcessorManager) | ||
| if err := proc.SetProcessorCount(2); err != nil { | ||
| return err | ||
| } | ||
|
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| mem := builder.(vm.MemoryManager) | ||
| if err := mem.SetMemoryLimit(ctx, 2048); err != nil { | ||
| return err | ||
| } | ||
|
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| opts := []vm.CreateOpt{remotevm.WithIgnoreSupported()} | ||
| vm, err := builder.Create(ctx, opts) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| if err := vm.Start(ctx); err != nil { | ||
| return err | ||
| } | ||
| defer vm.Close() | ||
|
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| fmt.Printf("Started VM %s\n", vm.ID()) | ||
|
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| errCh := make(chan error) | ||
| go func() { | ||
| fmt.Printf("Waiting on VM %s\n", vm.ID()) | ||
| if err := vm.Wait(); err != nil { | ||
| errCh <- err | ||
| } | ||
| }() | ||
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| sigChan := make(chan os.Signal, 1) | ||
| signal.Notify(sigChan, os.Interrupt, syscall.SIGTERM) | ||
| defer signal.Stop(sigChan) | ||
|
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| select { | ||
| case <-sigChan: | ||
| fmt.Println("Received signal, exiting.") | ||
| if err := vm.Stop(ctx); err != nil { | ||
| fmt.Fprintf(os.Stderr, err.Error()) | ||
| os.Exit(1) | ||
| } | ||
| os.Exit(0) | ||
| case err := <-errCh: | ||
| if err != nil { | ||
| return err | ||
| } | ||
| } | ||
|
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| return vm.ExitError() | ||
| }, | ||
| } | ||
|
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| func relayIO(r io.Reader, w io.Writer) error { | ||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,5 +1,3 @@ | ||
| //go:build windows | ||
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| package remotevm | ||
|
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| import ( | ||
|
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||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| package remotevm | ||
|
|
||
| import ( | ||
| "context" | ||
|
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| "github.com/pkg/errors" | ||
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| "github.com/Microsoft/hcsshim/internal/vm" | ||
| ) | ||
|
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| func WithIgnoreSupported() vm.CreateOpt { | ||
| return func(ctx context.Context, uvmb vm.UVMBuilder) error { | ||
| builder, ok := uvmb.(*utilityVMBuilder) | ||
| if !ok { | ||
| return errors.New("object is not a remotevm UVMBuilder") | ||
| } | ||
| builder.ignoreSupported = true | ||
| return nil | ||
| } | ||
| } |
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