func NewStore(ttl uint64, registryURL string) *Store {
s := &Store{
TTL: ttl,
pollCh: make(chan bool),
restartChan: make(chan *ConfigChange, 10),
}
u, err := url.Parse(registryURL)
if err != nil {
log.Fatalf("ERROR: Unable to parse %s", err)
}
switch strings.ToLower(u.Scheme) {
case "redis":
s.Backend = &RedisBackend{
RedisHost: u.Host,
}
s.Backend.connect()
case "consul":
s.Backend = NewConsulBackend()
default:
log.Fatalf("ERROR: Unsupported registry backend: %s", u)
}
return s
}
func initOrDie() {
if registryURL == "" {
log.Fatalf("ERROR: Registry URL not specified. Use '-registry redis://127.0.0.1:6379' or set 'GALAXY_REGISTRY_URL'")
}
configStore = config.NewStore(config.DefaultTTL, registryURL)
serviceRuntime = runtime.NewServiceRuntime(configStore, dns, hostIP)
apps, err := configStore.ListAssignments(env, pool)
if err != nil {
log.Fatalf("ERROR: Could not retrieve service configs for /%s/%s: %s", env, pool, err)
}
workerChans = make(map[string]chan string)
for _, app := range apps {
appCfg, err := configStore.GetApp(app, env)
if err != nil {
log.Fatalf("ERROR: Could not retrieve service config for /%s/%s: %s", env, pool, err)
}
workerChans[appCfg.Name()] = make(chan string)
}
signalsChan = make(chan os.Signal, 1)
signal.Notify(signalsChan, os.Interrupt, os.Kill, syscall.SIGTERM)
go deregisterHost(signalsChan)
}
func NewServiceRuntime(configStore *config.Store, dns, hostIP string) *ServiceRuntime {
var err error
var client *docker.Client
dockerZero, err := dockerBridgeIp()
if err != nil {
log.Fatalf("ERROR: Unable to find docker0 bridge: %s", err)
}
endpoint := GetEndpoint()
if certPath := os.Getenv("DOCKER_CERT_PATH"); certPath != "" {
cert := certPath + "/cert.pem"
key := certPath + "/key.pem"
ca := certPath + "/ca.pem"
client, err = docker.NewTLSClient(endpoint, cert, key, ca)
} else {
client, err = docker.NewClient(endpoint)
}
if err != nil {
log.Fatalf("ERROR: Unable to initialize docker client: %s: %s", err, endpoint)
}
client.HTTPClient.Timeout = 60 * time.Second
return &ServiceRuntime{
dns: dns,
configStore: configStore,
hostIP: hostIP,
dockerIP: dockerZero,
dockerClient: client,
}
}
func ensureEnv() {
envs, err := configStore.ListEnvs()
if err != nil {
log.Fatalf("ERROR: Could not check envs: %s", err)
}
if strings.TrimSpace(env) == "" {
log.Fatalf("ERROR: Need an env. Use '-env <env>'. Existing envs are: %s.", strings.Join(envs, ","))
}
}
func ensurePool() {
pools, err := configStore.ListPools(env)
if err != nil {
log.Fatalf("ERROR: Could not check pools: %s", err)
}
if strings.TrimSpace(pool) == "" {
log.Fatalf("ERROR: Need a pool. Use '-pool <pool>'. Existing pools are: %s", strings.Join(pools, ","))
}
}
// wait until a stack is in a final state, then delete it
func waitAndDelete(name string) {
log.Println("Attempting to delete stack:", name)
// we need to get the StackID in order to lookup DELETE events
desc, err := stack.DescribeStacks(name)
if err != nil {
log.Fatalf("ERROR: %s", err)
} else if len(desc.Stacks) == 0 {
log.Fatal("ERROR: could not describe stack:", name)
}
stackId := desc.Stacks[0].Id
err = stack.WaitForComplete(stackId, 5*time.Minute)
if err != nil {
log.Fatal(err)
}
_, err = stack.Delete(name)
if err != nil {
log.Fatal(err)
}
// wait
err = stack.WaitForComplete(stackId, 5*time.Minute)
if err != nil {
log.Fatal(err)
}
log.Println("Deleted stack:", name)
}
// Print a Cloudformation template to stdout.
func stackTemplate(c *cli.Context) {
stackName := c.Args().First()
if c.String("region") != "" {
stack.Region = c.String("region")
}
if stackName == "" {
os.Stdout.Write(stack.DefaultGalaxyTemplate())
return
}
if c.String("region") != "" {
stack.Region = c.String("region")
}
stackTmpl, err := stack.GetTemplate(stackName)
if err != nil {
if err, ok := err.(*aws.Error); ok {
if err.Code == "ValidationError" && strings.Contains(err.Message, "does not exist") {
log.Fatalf("ERROR: Stack '%s' does not exist", stackName)
}
}
log.Fatal(err)
}
if _, err := os.Stdout.Write(stackTmpl); err != nil {
log.Fatal(err)
}
}
func poolCreate(c *cli.Context) {
ensureEnvArg(c)
ensurePoolArg(c)
initStore(c)
created, err := configStore.CreatePool(utils.GalaxyPool(c), utils.GalaxyEnv(c))
if err != nil {
log.Fatalf("ERROR: Could not create pool: %s", err)
return
}
if created {
log.Printf("Pool %s created\n", utils.GalaxyPool(c))
} else {
log.Printf("Pool %s already exists\n", utils.GalaxyPool(c))
}
ec2host, err := runtime.EC2PublicHostname()
if err != nil || ec2host == "" {
log.Debug("not running from AWS, skipping pool creation")
return
}
// now create the cloudformation stack
// is this fails, the stack can be created separately with
// stack:create_pool
stackCreatePool(c)
}
func appList(c *cli.Context) {
initStore(c)
err := commander.AppList(configStore, utils.GalaxyEnv(c))
if err != nil {
log.Fatalf("ERROR: %s", err)
}
}
func appRun(c *cli.Context) {
ensureEnvArg(c)
initStore(c)
initRuntime(c)
app := ensureAppParam(c, "app:run")
if len(c.Args()) < 2 {
log.Fatalf("ERROR: Missing command to run.")
return
}
err := commander.AppRun(configStore, serviceRuntime, app, utils.GalaxyEnv(c), c.Args()[1:])
if err != nil {
log.Fatalf("ERROR: %s", err)
}
}
func poolList(c *cli.Context) {
initStore(c)
envs := []string{utils.GalaxyEnv(c)}
if utils.GalaxyEnv(c) == "" {
var err error
envs, err = configStore.ListEnvs()
if err != nil {
log.Fatalf("ERROR: %s", err)
}
}
columns := []string{"ENV | POOL | APPS "}
for _, env := range envs {
pools, err := configStore.ListPools(env)
if err != nil {
log.Fatalf("ERROR: cannot list pools: %s", err)
return
}
if len(pools) == 0 {
columns = append(columns, strings.Join([]string{
env,
"",
""}, " | "))
continue
}
for _, pool := range pools {
assigments, err := configStore.ListAssignments(env, pool)
if err != nil {
log.Fatalf("ERROR: cannot list pool assignments: %s", err)
}
columns = append(columns, strings.Join([]string{
env,
pool,
strings.Join(assigments, ",")}, " | "))
}
}
output := columnize.SimpleFormat(columns)
log.Println(output)
}
// Backup app config to a file or STDOUT
func appBackup(c *cli.Context) {
initStore(c)
env := utils.GalaxyEnv(c)
if env == "" {
log.Fatal("ERROR: env is required. Pass --env or set GALAXY_ENV")
}
backup := &backupData{
Time: time.Now(),
}
toBackup := c.Args()
if len(toBackup) == 0 {
appList, err := configStore.ListApps(env)
if err != nil {
log.Fatalf("ERROR: %s\n", err)
}
for _, app := range appList {
toBackup = append(toBackup, app.Name())
}
}
errCount := 0
for _, app := range toBackup {
data, err := getAppBackup(app, env)
if err != nil {
// log errors and continue
log.Errorf("ERROR: %s [%s]", err, app)
errCount++
continue
}
backup.Apps = append(backup.Apps, data)
}
if errCount > 0 {
fmt.Printf("WARNING: backup completed with %d errors\n", errCount)
defer os.Exit(errCount)
}
j, err := json.MarshalIndent(backup, "", " ")
if err != nil {
log.Fatal(err)
}
fileName := c.String("file")
if fileName != "" {
if err := ioutil.WriteFile(fileName, j, 0666); err != nil {
log.Fatal(err)
}
return
}
os.Stdout.Write(j)
}
func ensureAppParam(c *cli.Context, command string) string {
app := c.Args().First()
if app == "" {
cli.ShowCommandHelp(c, command)
log.Fatal("ERROR: app name missing")
}
exists, err := appExists(app, utils.GalaxyEnv(c))
if err != nil {
log.Fatalf("ERROR: can't deteremine if %s exists: %s", app, err)
}
if !exists {
log.Fatalf("ERROR: %s does not exist. Create it first.", app)
}
return app
}
// return --base, or try to find a base cloudformation stack
func getBase(c *cli.Context) string {
errNoBase := fmt.Errorf("could not identify a unique base stack")
base := c.String("base")
if base != "" {
return base
}
descResp, err := stack.DescribeStacks("")
if err != nil {
log.Fatal(err)
}
for _, stack := range descResp.Stacks {
// first check for galaxy:base tag
baseTag := false
for _, t := range stack.Tags {
if t.Key == "galaxy" && t.Value == "base" {
baseTag = true
}
}
if baseTag {
if base != "" {
err = errNoBase
}
base = stack.Name
continue
}
parts := strings.Split(stack.Name, "-")
// check for "-base" in the name
if parts[len(parts)-1] == "base" {
if base != "" {
err = errNoBase
}
base = stack.Name
continue
}
// the best we can do for now is look for a stack with a single word
if len(parts) == 1 {
if base != "" {
err = errNoBase
}
base = stack.Name
log.Printf("Warning: guessing base stack: %s", base)
}
}
if err != nil {
log.Fatalf("%s: %s", err, "use --base")
}
return base
}
func pgPsql(c *cli.Context) {
ensureEnvArg(c)
initStore(c)
app := ensureAppParam(c, "pg:psql")
appCfg, err := configStore.GetApp(app, utils.GalaxyEnv(c))
if err != nil {
log.Fatalf("ERROR: Unable to run command: %s.", err)
return
}
database_url := appCfg.Env()["DATABASE_URL"]
if database_url == "" {
log.Printf("No DATABASE_URL configured. Set one with config:set first.")
return
}
if !strings.HasPrefix(database_url, "postgres://") {
log.Printf("DATABASE_URL is not a postgres database.")
return
}
cmd := exec.Command("psql", database_url)
cmd.Stdin = os.Stdin
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
// Ignore SIGINT while the process is running
ch := make(chan os.Signal, 1)
signal.Notify(ch, os.Interrupt)
defer func() {
signal.Stop(ch)
close(ch)
}()
go func() {
for {
_, ok := <-ch
if !ok {
break
}
}
}()
err = cmd.Start()
if err != nil {
log.Fatal(err)
}
err = cmd.Wait()
if err != nil {
fmt.Printf("Command finished with error: %v\n", err)
}
}
func appRestart(c *cli.Context) {
initStore(c)
app := ensureAppParam(c, "app:restart")
err := commander.AppRestart(configStore, app, utils.GalaxyEnv(c))
if err != nil {
log.Fatalf("ERROR: %s", err)
}
}
func appDelete(c *cli.Context) {
ensureEnvArg(c)
initStore(c)
app := ensureAppParam(c, "app:delete")
err := commander.AppDelete(configStore, app, utils.GalaxyEnv(c))
if err != nil {
log.Fatalf("ERROR: %s", err)
}
}
func configUnset(c *cli.Context) {
ensureEnvArg(c)
initStore(c)
app := ensureAppParam(c, "config:unset")
err := commander.ConfigUnset(configStore, app, utils.GalaxyEnv(c), c.Args().Tail())
if err != nil {
log.Fatalf("ERROR: Unable to unset config: %s.", err)
return
}
}
func configList(c *cli.Context) {
ensureEnvArg(c)
initStore(c)
app := ensureAppParam(c, "config")
err := commander.ConfigList(configStore, app, utils.GalaxyEnv(c))
if err != nil {
log.Fatalf("ERROR: Unable to list config: %s.", err)
return
}
}
func loadConfig() {
configFile := filepath.Join(cfgDir(), "galaxy.toml")
_, err := os.Stat(configFile)
if err == nil {
if _, err := toml.DecodeFile(configFile, &config); err != nil {
log.Fatalf("ERROR: Unable to logout: %s", err)
return
}
}
}
func poolAssign(c *cli.Context) {
ensureEnvArg(c)
ensurePoolArg(c)
initStore(c)
app := ensureAppParam(c, "pool:assign")
err := commander.AppAssign(configStore, app, utils.GalaxyEnv(c), utils.GalaxyPool(c))
if err != nil {
log.Fatalf("ERROR: %s", err)
}
}
func appShell(c *cli.Context) {
ensureEnvArg(c)
initStore(c)
initRuntime(c)
app := ensureAppParam(c, "app:shell")
err := commander.AppShell(configStore, serviceRuntime, app,
utils.GalaxyEnv(c), utils.GalaxyPool(c))
if err != nil {
log.Fatalf("ERROR: %s", err)
}
}
// create our base stack
func stackInit(c *cli.Context) {
stackName := c.Args().First()
if stackName == "" {
log.Fatal("ERROR: stack name required")
}
if c.String("region") != "" {
stack.Region = c.String("region")
}
exists, err := stack.Exists(stackName)
if exists {
log.Fatalf("ERROR: stack %s already exists", stackName)
} else if err != nil {
fmt.Println("EXISTS ERROR")
log.Fatal(err)
}
params := getInitOpts(c)
stackTmpl, err := stack.GalaxyTemplate(params)
if err != nil {
log.Fatalf("ERROR: %s", err)
}
if c.Bool("print") {
fmt.Println(string(stackTmpl))
return
}
opts := make(map[string]string)
opts["tag.galaxy"] = "base"
_, err = stack.Create(stackName, stackTmpl, opts)
if err != nil {
log.Fatalf("ERROR: %s", err)
}
log.Println("Initializing stack", stackName)
}
func heartbeatHost() {
_, err := configStore.CreatePool(pool, env)
if err != nil {
log.Fatalf("ERROR: Unabled to create pool %s: %s", pool, err)
}
defer wg.Done()
for {
configStore.UpdateHost(env, pool, config.HostInfo{
HostIP: hostIP,
})
time.Sleep(45 * time.Second)
}
}
func appCreate(c *cli.Context) {
ensureEnvArg(c)
initStore(c)
app := c.Args().First()
if app == "" {
cli.ShowCommandHelp(c, "app:create")
log.Fatal("ERROR: app name missing")
}
err := commander.AppCreate(configStore, app, utils.GalaxyEnv(c))
if err != nil {
log.Fatalf("ERROR: %s", err)
}
}
func poolCreate(c *cli.Context) {
ensureEnvArg(c)
ensurePoolArg(c)
initStore(c)
created, err := configStore.CreatePool(utils.GalaxyPool(c), utils.GalaxyEnv(c))
if err != nil {
log.Fatalf("ERROR: Could not create pool: %s", err)
return
}
if created {
log.Printf("Pool %s created\n", utils.GalaxyPool(c))
} else {
log.Printf("Pool %s already exists\n", utils.GalaxyPool(c))
}
}
func poolUnassign(c *cli.Context) {
ensureEnvArg(c)
ensurePoolArg(c)
initStore(c)
app := c.Args().First()
if app == "" {
cli.ShowCommandHelp(c, "pool:assign")
log.Fatal("ERROR: app name missing")
}
err := commander.AppUnassign(configStore, app, utils.GalaxyEnv(c), utils.GalaxyPool(c))
if err != nil {
log.Fatalf("ERROR: %s", err)
}
}
func poolDelete(c *cli.Context) {
ensureEnvArg(c)
ensurePoolArg(c)
initStore(c)
empty, err := configStore.DeletePool(utils.GalaxyPool(c), utils.GalaxyEnv(c))
if err != nil {
log.Fatalf("ERROR: Could not delete pool: %s", err)
return
}
if empty {
log.Printf("Pool %s deleted\n", utils.GalaxyPool(c))
} else {
log.Printf("Pool %s has apps assigned. Unassign them first.\n", utils.GalaxyPool(c))
}
}
func appDeploy(c *cli.Context) {
ensureEnvArg(c)
initStore(c)
initRuntime(c)
app := ensureAppParam(c, "app:deploy")
version := ""
if len(c.Args().Tail()) == 1 {
version = c.Args().Tail()[0]
}
if version == "" {
log.Println("ERROR: version missing")
cli.ShowCommandHelp(c, "app:deploy")
return
}
err := commander.AppDeploy(configStore, serviceRuntime, app, utils.GalaxyEnv(c), version)
if err != nil {
log.Fatalf("ERROR: %s", err)
}
}
func main() {
flag.Int64Var(&stopCutoff, "cutoff", 10, "Seconds to wait before stopping old containers")
flag.StringVar(®istryURL, "registry", utils.GetEnv("GALAXY_REGISTRY_URL", "redis://127.0.0.1:6379"), "registry URL")
flag.StringVar(&env, "env", utils.GetEnv("GALAXY_ENV", ""), "Environment namespace")
flag.StringVar(&pool, "pool", utils.GetEnv("GALAXY_POOL", ""), "Pool namespace")
flag.StringVar(&hostIP, "host-ip", "127.0.0.1", "Host IP")
flag.StringVar(&shuttleAddr, "shuttle-addr", "", "Shuttle API addr (127.0.0.1:9090)")
flag.StringVar(&dns, "dns", "", "DNS addr to use for containers")
flag.BoolVar(&debug, "debug", false, "verbose logging")
flag.BoolVar(&version, "v", false, "display version info")
flag.Usage = func() {
println("Usage: commander [options] <command> [<args>]\n")
println("Available commands are:")
println(" agent Runs commander agent")
println(" app List all apps")
println(" app:assign Assign an app to a pool")
println(" app:create Create an app")
println(" app:deploy Deploy an app")
println(" app:delete Delete an app")
println(" app:restart Restart an app")
println(" app:run Run a command within an app on this host")
println(" app:shell Run a shell within an app on this host")
println(" app:start Starts one or more apps")
println(" app:stop Stops one or more apps")
println(" app:unassign Unassign an app from a pool")
println(" config List config for an app")
println(" config:get Get config values for an app")
println(" config:set Set config values for an app")
println(" config:unset Unset config values for an app")
println(" runtime List container runtime policies")
println(" runtime:set Set container runtime policies")
println(" hosts List hosts in an env and pool")
println("\nOptions:\n")
flag.PrintDefaults()
}
flag.Parse()
if version {
fmt.Println(buildVersion)
return
}
log.DefaultLogger = log.New(os.Stdout, "", log.INFO)
log.DefaultLogger.SetFlags(0)
if debug {
log.DefaultLogger.Level = log.DEBUG
}
if flag.NArg() < 1 {
fmt.Println("Need a command")
flag.Usage()
os.Exit(1)
}
initOrDie()
switch flag.Args()[0] {
case "dump":
if flag.NArg() < 2 {
fmt.Println("Usage: commander dump ENV")
os.Exit(1)
}
dump(flag.Arg(1))
return
case "restore":
if flag.NArg() < 2 {
fmt.Println("Usage: commander dump ENV FILE")
os.Exit(1)
}
restore(flag.Arg(1))
return
case "agent":
log.DefaultLogger.SetFlags(golog.LstdFlags)
loop = true
agentFs := flag.NewFlagSet("agent", flag.ExitOnError)
agentFs.Usage = func() {
println("Usage: commander agent [options]\n")
println(" Runs commander continuously\n\n")
println("Options:\n\n")
agentFs.PrintDefaults()
}
agentFs.Parse(flag.Args()[1:])
ensureEnv()
ensurePool()
case "app":
appFs := flag.NewFlagSet("app", flag.ExitOnError)
appFs.Usage = func() {
println("Usage: commander app\n")
println(" List all apps or apps in an environment\n")
println("Options:\n")
appFs.PrintDefaults()
}
appFs.Parse(flag.Args()[1:])
err := commander.AppList(configStore, env)
if err != nil {
log.Fatalf("ERROR: %s", err)
}
return
case "app:assign":
appFs := flag.NewFlagSet("app:assign", flag.ExitOnError)
appFs.Usage = func() {
println("Usage: commander app:assign <app>\n")
println(" Assign an app to a pool\n")
println("Options:\n")
appFs.PrintDefaults()
}
appFs.Parse(flag.Args()[1:])
ensureEnv()
ensurePool()
if appFs.NArg() != 1 {
appFs.Usage()
os.Exit(1)
}
err := commander.AppAssign(configStore, appFs.Args()[0], env, pool)
if err != nil {
log.Fatalf("ERROR: %s", err)
}
return
case "app:create":
appFs := flag.NewFlagSet("app:create", flag.ExitOnError)
appFs.Usage = func() {
println("Usage: commander app:create <app>\n")
println(" Create an app in an environment\n")
println("Options:\n")
appFs.PrintDefaults()
}
appFs.Parse(flag.Args()[1:])
ensureEnv()
if appFs.NArg() == 0 {
appFs.Usage()
os.Exit(1)
}
err := commander.AppCreate(configStore, appFs.Args()[0], env)
if err != nil {
log.Fatalf("ERROR: %s", err)
}
return
case "app:delete":
appFs := flag.NewFlagSet("app:delete", flag.ExitOnError)
appFs.Usage = func() {
println("Usage: commander app:delete <app>\n")
println(" Delete an app in an environment\n")
println("Options:\n")
appFs.PrintDefaults()
}
appFs.Parse(flag.Args()[1:])
ensureEnv()
if appFs.NArg() == 0 {
appFs.Usage()
os.Exit(1)
}
err := commander.AppDelete(configStore, appFs.Args()[0], env)
if err != nil {
log.Fatalf("ERROR: %s", err)
}
return
case "app:deploy":
appFs := flag.NewFlagSet("app:delete", flag.ExitOnError)
appFs.Usage = func() {
println("Usage: commander app:deploy [-force] <app> <version>\n")
println(" Deploy an app in an environment\n")
println("Options:\n")
appFs.PrintDefaults()
}
appFs.Parse(flag.Args()[1:])
ensureEnv()
if appFs.NArg() != 2 {
appFs.Usage()
os.Exit(1)
}
err := commander.AppDeploy(configStore, serviceRuntime, appFs.Args()[0], env, appFs.Args()[1])
if err != nil {
log.Fatalf("ERROR: %s", err)
}
return
case "app:restart":
appFs := flag.NewFlagSet("app:restart", flag.ExitOnError)
appFs.Usage = func() {
println("Usage: commander app:restart <app>\n")
println(" Restart an app in an environment\n")
println("Options:\n")
appFs.PrintDefaults()
}
appFs.Parse(flag.Args()[1:])
ensureEnv()
if appFs.NArg() == 0 {
appFs.Usage()
os.Exit(1)
}
err := commander.AppRestart(configStore, appFs.Args()[0], env)
if err != nil {
log.Fatalf("ERROR: %s", err)
}
return
case "app:run":
appFs := flag.NewFlagSet("app:run", flag.ExitOnError)
appFs.Usage = func() {
println("Usage: commander app:run <app> <cmd>\n")
println(" Restart an app in an environment\n")
println("Options:\n")
appFs.PrintDefaults()
}
appFs.Parse(flag.Args()[1:])
ensureEnv()
if appFs.NArg() < 2 {
appFs.Usage()
os.Exit(1)
}
err := commander.AppRun(configStore, serviceRuntime, appFs.Args()[0], env, appFs.Args()[1:])
if err != nil {
log.Fatalf("ERROR: %s", err)
}
return
case "app:shell":
appFs := flag.NewFlagSet("app:shell", flag.ExitOnError)
appFs.Usage = func() {
println("Usage: commander app:shell <app>\n")
println(" Run a shell for an app\n")
println("Options:\n")
appFs.PrintDefaults()
}
appFs.Parse(flag.Args()[1:])
ensureEnv()
ensurePool()
if appFs.NArg() != 1 {
appFs.Usage()
os.Exit(1)
}
err := commander.AppShell(configStore, serviceRuntime, appFs.Args()[0], env, pool)
if err != nil {
log.Fatalf("ERROR: %s", err)
}
return
case "app:start":
startFs := flag.NewFlagSet("app:start", flag.ExitOnError)
startFs.Usage = func() {
println("Usage: commander app:start [options] [<app>]*\n")
println(" Starts one or more apps. If no apps are specified, starts all apps.\n")
println("Options:\n")
startFs.PrintDefaults()
}
startFs.Parse(flag.Args()[1:])
apps = startFs.Args()
if len(apps) == 0 {
acs, err := configStore.ListApps(env)
if err != nil {
log.Fatalf("ERROR: Unable to list apps: %s", err)
}
for _, ac := range acs {
apps = append(apps, ac.Name())
}
}
break
case "app:status":
// FIXME: undocumented
statusFs := flag.NewFlagSet("app:status", flag.ExitOnError)
statusFs.Usage = func() {
println("Usage: commander app:status [options] [<app>]*\n")
println(" Lists status of running apps.\n")
println("Options:\n")
statusFs.PrintDefaults()
}
statusFs.Parse(flag.Args()[1:])
ensureEnv()
ensurePool()
err := discovery.Status(serviceRuntime, configStore, env, pool, hostIP)
if err != nil {
log.Fatalf("ERROR: Unable to list app status: %s", err)
}
return
case "app:stop":
stopFs := flag.NewFlagSet("app:stop", flag.ExitOnError)
stopFs.Usage = func() {
println("Usage: commander app:stop [options] [<app>]*\n")
println(" Stops one or more apps. If no apps are specified, stops all apps.\n")
println("Options:\n")
stopFs.PrintDefaults()
}
stopFs.Parse(flag.Args()[1:])
apps = stopFs.Args()
for _, app := range apps {
err := serviceRuntime.StopAllMatching(app)
if err != nil {
log.Fatalf("ERROR: Unable able to stop all containers: %s", err)
}
}
if len(apps) > 0 {
return
}
err := serviceRuntime.StopAll(env)
if err != nil {
log.Fatalf("ERROR: Unable able to stop all containers: %s", err)
}
return
case "app:unassign":
appFs := flag.NewFlagSet("app:unassign", flag.ExitOnError)
appFs.Usage = func() {
println("Usage: commander app:unassign <app>\n")
println(" Unassign an app to a pool\n")
println("Options:\n")
appFs.PrintDefaults()
}
appFs.Parse(flag.Args()[1:])
ensureEnv()
ensurePool()
if appFs.NArg() != 1 {
appFs.Usage()
os.Exit(1)
}
err := commander.AppUnassign(configStore, appFs.Args()[0], env, pool)
if err != nil {
log.Fatalf("ERROR: %s", err)
}
return
case "hosts":
hostFs := flag.NewFlagSet("hosts", flag.ExitOnError)
hostFs.Usage = func() {
println("Usage: commander hosts\n")
println(" List hosts in an env and pool\n")
println("Options:\n")
hostFs.PrintDefaults()
}
err := hostFs.Parse(flag.Args()[1:])
if err != nil {
log.Fatalf("ERROR: Bad command line options: %s", err)
}
ensureEnv()
ensurePool()
err = commander.HostsList(configStore, env, pool)
if err != nil {
log.Fatalf("ERROR: %s", err)
}
return
case "config":
configFs := flag.NewFlagSet("config", flag.ExitOnError)
usage := "Usage: commander config <app>"
configFs.Usage = func() {
println(usage)
println(" List config values for an app\n")
println("Options:\n")
configFs.PrintDefaults()
}
err := configFs.Parse(flag.Args()[1:])
if err != nil {
log.Fatalf("ERROR: Bad command line options: %s", err)
}
ensureEnv()
if configFs.NArg() != 1 {
log.Error("ERROR: Missing app name argument")
log.Printf("Usage: %s", usage)
os.Exit(1)
}
app := configFs.Args()[0]
err = commander.ConfigList(configStore, app, env)
if err != nil {
log.Fatalf("ERROR: %s", err)
}
return
case "config:get":
configFs := flag.NewFlagSet("config:get", flag.ExitOnError)
configFs.Usage = func() {
println("Usage: commander config <app> KEY [KEY]*\n")
println(" Get config values for an app\n")
println("Options:\n")
configFs.PrintDefaults()
}
err := configFs.Parse(flag.Args()[1:])
if err != nil {
log.Fatalf("ERROR: Bad command line options: %s", err)
}
ensureEnv()
if configFs.NArg() == 0 {
log.Errorf("ERROR: Missing app name")
configFs.Usage()
os.Exit(1)
}
app := configFs.Args()[0]
err = commander.ConfigGet(configStore, app, env, configFs.Args()[1:])
if err != nil {
log.Fatalf("ERROR: %s", err)
}
return
case "config:set":
configFs := flag.NewFlagSet("config:set", flag.ExitOnError)
configFs.Usage = func() {
println("Usage: commander config <app> KEY=VALUE [KEY=VALUE]*\n")
println(" Set config values for an app\n")
println("Options:\n")
configFs.PrintDefaults()
}
err := configFs.Parse(flag.Args()[1:])
if err != nil {
log.Fatalf("ERROR: Bad command line options: %s", err)
}
ensureEnv()
if configFs.NArg() == 0 {
log.Errorf("ERROR: Missing app name")
configFs.Usage()
os.Exit(1)
}
app := configFs.Args()[0]
err = commander.ConfigSet(configStore, app, env, configFs.Args()[1:])
if err != nil {
log.Fatalf("ERROR: %s", err)
}
return
case "config:unset":
configFs := flag.NewFlagSet("config:unset", flag.ExitOnError)
configFs.Usage = func() {
println("Usage: commander config <app> KEY [KEY]*\n")
println(" Unset config values for an app\n")
println("Options:\n")
configFs.PrintDefaults()
}
err := configFs.Parse(flag.Args()[1:])
if err != nil {
log.Fatalf("ERROR: Bad command line options: %s", err)
}
ensureEnv()
if configFs.NArg() == 0 {
log.Errorf("ERROR: Missing app name")
configFs.Usage()
os.Exit(1)
}
app := configFs.Args()[0]
err = commander.ConfigUnset(configStore, app, env, configFs.Args()[1:])
if err != nil {
log.Fatalf("ERROR: %s", err)
}
return
case "runtime":
runtimeFs := flag.NewFlagSet("runtime", flag.ExitOnError)
runtimeFs.Usage = func() {
println("Usage: commander runtime\n")
println(" List container runtime policies\n")
println("Options:\n")
runtimeFs.PrintDefaults()
}
err := runtimeFs.Parse(flag.Args()[1:])
if err != nil {
log.Fatalf("ERROR: Bad command line options: %s", err)
}
app := ""
if runtimeFs.NArg() > 0 {
app = runtimeFs.Args()[0]
}
err = commander.RuntimeList(configStore, app, env, pool)
if err != nil {
log.Fatalf("ERROR: %s", err)
}
return
case "runtime:set":
var ps int
var m string
var c string
var vhost string
var port string
var maint string
runtimeFs := flag.NewFlagSet("runtime:set", flag.ExitOnError)
runtimeFs.IntVar(&ps, "ps", 0, "Number of instances to run across all hosts")
runtimeFs.StringVar(&m, "m", "", "Memory limit (format: <number><optional unit>, where unit = b, k, m or g)")
runtimeFs.StringVar(&c, "c", "", "CPU shares (relative weight)")
runtimeFs.StringVar(&vhost, "vhost", "", "Virtual host for HTTP routing")
runtimeFs.StringVar(&port, "port", "", "Service port for service discovery")
runtimeFs.StringVar(&maint, "maint", "", "Enable or disable maintenance mode")
runtimeFs.Usage = func() {
println("Usage: commander runtime:set [-ps 1] [-m 100m] [-c 512] [-vhost x.y.z] [-port 8000] [-maint false] <app>\n")
println(" Set container runtime policies\n")
println("Options:\n")
runtimeFs.PrintDefaults()
}
err := runtimeFs.Parse(flag.Args()[1:])
if err != nil {
log.Fatalf("ERROR: Bad command line options: %s", err)
}
ensureEnv()
if ps != 0 || m != "" || c != "" || maint != "" {
ensurePool()
}
if runtimeFs.NArg() != 1 {
runtimeFs.Usage()
os.Exit(1)
}
app := runtimeFs.Args()[0]
_, err = utils.ParseMemory(m)
if err != nil {
log.Fatalf("ERROR: Bad memory option %s: %s", m, err)
}
updated, err := commander.RuntimeSet(configStore, app, env, pool, commander.RuntimeOptions{
Ps: ps,
Memory: m,
CPUShares: c,
VirtualHost: vhost,
Port: port,
MaintenanceMode: maint,
})
if err != nil {
log.Fatalf("ERROR: %s", err)
}
if !updated {
log.Fatalf("ERROR: Failed to set runtime options.")
}
if pool != "" {
log.Printf("Runtime options updated for %s in %s running on %s", app, env, pool)
} else {
log.Printf("Runtime options updated for %s in %s", app, env)
}
return
case "runtime:unset":
var ps, m, c, port bool
var vhost string
runtimeFs := flag.NewFlagSet("runtime:unset", flag.ExitOnError)
runtimeFs.BoolVar(&ps, "ps", false, "Number of instances to run across all hosts")
runtimeFs.BoolVar(&m, "m", false, "Memory limit")
runtimeFs.BoolVar(&c, "c", false, "CPU shares (relative weight)")
runtimeFs.StringVar(&vhost, "vhost", "", "Virtual host for HTTP routing")
runtimeFs.BoolVar(&port, "port", false, "Service port for service discovery")
runtimeFs.Usage = func() {
println("Usage: commander runtime:unset [-ps] [-m] [-c] [-vhost x.y.z] [-port] <app>\n")
println(" Reset and removes container runtime policies to defaults\n")
println("Options:\n")
runtimeFs.PrintDefaults()
}
err := runtimeFs.Parse(flag.Args()[1:])
if err != nil {
log.Fatalf("ERROR: Bad command line options: %s", err)
}
ensureEnv()
if ps || m || c {
ensurePool()
}
if runtimeFs.NArg() != 1 {
runtimeFs.Usage()
os.Exit(1)
}
app := runtimeFs.Args()[0]
options := commander.RuntimeOptions{
VirtualHost: vhost,
}
if ps {
options.Ps = -1
}
if m {
options.Memory = "-"
}
if c {
options.CPUShares = "-"
}
if port {
options.Port = "-"
}
updated, err := commander.RuntimeUnset(configStore, app, env, pool, options)
if err != nil {
log.Fatalf("ERROR: %s", err)
}
if !updated {
log.Fatalf("ERROR: Failed to set runtime options.")
}
if pool != "" {
log.Printf("Runtime options updated for %s in %s running on %s", app, env, pool)
} else {
log.Printf("Runtime options updated for %s in %s", app, env)
}
return
case "pool":
err := commander.ListPools(configStore, env)
if err != nil {
log.Fatal(err)
}
return
case "pool:create":
appFs := flag.NewFlagSet("pool:create", flag.ExitOnError)
appFs.Usage = func() {
println("Usage: commander -env <env> pool:create <pool>\n")
println(" Create a pool in <env>\n")
appFs.PrintDefaults()
}
appFs.Parse(flag.Args()[1:])
ensureEnv()
if pool == "" && appFs.NArg() > 0 {
pool = appFs.Arg(0)
} else {
ensurePool()
}
err := commander.PoolCreate(configStore, env, pool)
if err != nil {
log.Fatalf("ERROR: Could not create pool: %s", err)
}
fmt.Println("created pool:", pool)
return
case "pool:delete":
appFs := flag.NewFlagSet("pool:delete", flag.ExitOnError)
appFs.Usage = func() {
println("Usage: commander -env <env> pool:delete <pool>\n")
println(" Delete a pool from <env>\n")
appFs.PrintDefaults()
}
appFs.Parse(flag.Args()[1:])
ensureEnv()
if pool == "" && flag.NArg() > 1 {
pool = flag.Arg(1)
} else {
ensurePool()
}
err := commander.PoolDelete(configStore, env, pool)
if err != nil {
log.Fatalf("ERROR: Could not delete pool: %s", err)
return
}
fmt.Println("deleted pool:", pool)
return
default:
fmt.Println("Unknown command")
flag.Usage()
os.Exit(1)
}
ensureEnv()
ensurePool()
log.Printf("Starting commander %s", buildVersion)
log.Printf("env=%s pool=%s host-ip=%s registry=%s shuttle-addr=%s dns=%s cutoff=%ds",
env, pool, hostIP, registryURL, shuttleAddr, dns, stopCutoff)
defer func() {
configStore.DeleteHost(env, pool, config.HostInfo{
HostIP: hostIP,
})
}()
for app, ch := range workerChans {
if len(apps) == 0 || utils.StringInSlice(app, apps) {
wg.Add(1)
go restartContainers(app, ch)
ch <- "deploy"
}
}
if loop {
wg.Add(1)
go heartbeatHost()
go discovery.Register(serviceRuntime, configStore, env, pool, hostIP, shuttleAddr)
cancelChan := make(chan struct{})
// do we need to cancel ever?
restartChan := configStore.Watch(env, cancelChan)
monitorService(restartChan)
}
// TODO: do we still need a WaitGroup?
wg.Wait()
}