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Implements verbose flag

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This commit is contained in:
Mikhail Klementev 2018-08-04 09:27:53 +00:00
parent 326b9ce610
commit 9218a10641
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GPG key ID: D90D0727C1FEBEAB
2 changed files with 36 additions and 12 deletions
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2
README.md
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@ -49,7 +49,7 @@ Autodetection is a bash-spaghetti, so you need to check results. BTW it's just a
## Run application
$ appvm start chromium
$ appvm start chromium --verbose
$ # ... long wait for first time, because we need to collect a lot of packages
You can customize local settings in `$GOPATH/github.com/jollheef/appvm/nix/local.nix`.

46
appvm.go
View file

@ -22,6 +22,7 @@ import (
"time"
"github.com/digitalocean/go-libvirt"
"github.com/go-cmd/cmd"
"github.com/jollheef/go-system"
"github.com/olekukonko/tablewriter"
kingpin "gopkg.in/alecthomas/kingpin.v2"
@ -167,11 +168,28 @@ func prepareTemplates(appvmPath string) (err error) {
return
}
func generateVM(name string) (realpath, reginfo, qcow2 string, err error) {
stdout, stderr, ret, err := system.System("nix-build", "<nixpkgs/nixos>", "-A", "config.system.build.vm",
func streamStdOutErr(command *cmd.Cmd) {
for {
select {
case line := <-command.Stdout:
fmt.Println(line)
case line := <-command.Stderr:
fmt.Fprintln(os.Stderr, line)
}
}
}
func generateVM(name string, verbose bool) (realpath, reginfo, qcow2 string, err error) {
command := cmd.NewCmdOptions(cmd.Options{Buffered: false, Streaming: true},
"nix-build", "<nixpkgs/nixos>", "-A", "config.system.build.vm",
"-I", "nixos-config=nix/"+name+".nix", "-I", ".")
if err != nil {
log.Println(err, stdout, stderr, ret)
if verbose {
go streamStdOutErr(command)
}
status := <-command.Start()
if status.Error != nil || status.Exit != 0 {
log.Println(status.Error, status.Stdout, status.Stderr)
return
}
@ -206,13 +224,13 @@ func isRunning(l *libvirt.Libvirt, name string) bool {
return err == nil
}
func generateAppVM(l *libvirt.Libvirt, appvmPath, name string) (err error) {
func generateAppVM(l *libvirt.Libvirt, appvmPath, name string, verbose bool) (err error) {
err = os.Chdir(appvmPath)
if err != nil {
return
}
realpath, reginfo, qcow2, err := generateVM(name)
realpath, reginfo, qcow2, err := generateVM(name, verbose)
if err != nil {
return
}
@ -237,7 +255,7 @@ func stupidProgressBar() {
}
}
func start(l *libvirt.Libvirt, name string) {
func start(l *libvirt.Libvirt, name string, verbose bool) {
// Currently binary-only installation is not supported, because we need *.nix configurations
appvmPath := os.Getenv("GOPATH") + "/src/github.com/jollheef/appvm"
@ -248,8 +266,10 @@ func start(l *libvirt.Libvirt, name string) {
}
if !isRunning(l, name) {
go stupidProgressBar()
err = generateAppVM(l, appvmPath, name)
if !verbose {
go stupidProgressBar()
}
err = generateAppVM(l, appvmPath, name, verbose)
if err != nil {
log.Fatal(err)
}
@ -348,7 +368,11 @@ func main() {
autoballonCommand := kingpin.Command("autoballoon", "Automatically adjust/reduce app vm memory")
minMemory := autoballonCommand.Flag("min-memory", "Set minimal memory (megabytes)").Default("1024").Uint64()
adjustPercent := autoballonCommand.Flag("adj-memory", "Adjust memory ammount (percents)").Default("20").Uint64()
startName := kingpin.Command("start", "Start application").Arg("name", "Application name").Required().String()
startCommand := kingpin.Command("start", "Start application")
startName := startCommand.Arg("name", "Application name").Required().String()
startVerbose := startCommand.Flag("verbose", "Increase verbosity").Default("False").Bool()
stopName := kingpin.Command("stop", "Stop application").Arg("name", "Application name").Required().String()
dropName := kingpin.Command("drop", "Remove application data").Arg("name", "Application name").Required().String()
@ -356,7 +380,7 @@ func main() {
case "list":
list(l)
case "start":
start(l, *startName)
start(l, *startName, *startVerbose)
case "stop":
stop(l, *stopName)
case "drop":