// serve starts the libStorage server, blocking the current thread until the
// server is shutdown.
//
// char* host the golang network-style address. if no value is provided
// then a random TCP port bound to localhost is used
//
// short argc the length of the argv array
//
// void* argv a pointer to an array of char* strings that represent the
// drivers and corresponding service names to load. if the
// array is odd-numbered then the service for the trailing
// driver takes the name of the driver
//
// char* serve(char* host, int argc, void* argv);
//export serve
func serve(
host *C.char, argc C.int, argv unsafe.Pointer) *C.char {
iargc := int(argc)
args := make([]string, iargc)
pargv := argv
for x := 0; x < iargc; x++ {
gostr := C.GoString((*C.char)(pargv))
log.WithFields(log.Fields{
"x": x,
"gostr": gostr,
}).Info("parsed gostr")
args[x] = gostr
pargv = unsafe.Pointer(uintptr(pargv) + unsafe.Sizeof(gostr))
}
szHost := C.GoString(host)
log.WithFields(log.Fields{
"host": szHost,
"args": args,
}).Info("serving")
config, err := apicfg.NewConfig()
if err != nil {
return C.CString(err.Error())
}
if len(szHost) > 0 {
os.Setenv("LIBSTORAGE_HOST", szHost)
}
_, errs, err := server.Serve(nil, config)
if err != nil {
return C.CString(err.Error())
}
<-errs
return nil
}
// Run the server.
func Run() {
server.CloseOnAbort()
flag.Usage = printUsage
flag.Parse()
if flagVersion != nil && *flagVersion {
_, _, thisExeAbsPath := gotil.GetThisPathParts()
fmt.Fprintf(os.Stdout, "Binary: %s\n", thisExeAbsPath)
fmt.Fprint(os.Stdout, api.Version.String())
os.Exit(0)
}
if flagEnv != nil && *flagEnv {
for _, v := range os.Environ() {
fmt.Fprintf(os.Stdout, "%s\n", v)
}
os.Exit(0)
}
// if a config is specified then do not care about any other options
if flagConfig != nil && gotil.FileExists(*flagConfig) {
config = gofigCore.New()
if err := config.ReadConfigFile(*flagConfig); err != nil {
fmt.Fprintf(os.Stderr, "%s: error: %v\n", os.Args[0], err)
os.Exit(1)
}
if flagPrintConfig != nil && *flagPrintConfig {
jstr, err := config.ToJSON()
if err != nil {
fmt.Fprintf(os.Stderr, "%s: error: %v\n", os.Args[0], err)
os.Exit(1)
}
fmt.Fprintln(os.Stdout, jstr)
os.Exit(0)
}
s, errs, err := server.Serve(nil, config)
if err != nil {
fmt.Fprintf(os.Stderr, "%s: error: %v\n", os.Args[0], err)
os.Exit(1)
}
err = <-errs
if err != nil {
fmt.Fprintf(os.Stderr, "%s: error: %v\n", os.Args[0], err)
os.Exit(1)
}
s.Close()
os.Exit(0)
}
cfg, err := apiconfig.NewConfig()
if err != nil {
fmt.Fprintf(os.Stderr, "%s: error: %v\n", os.Args[0], err)
os.Exit(1)
}
config = cfg
for _, fs := range config.FlagSets() {
flag.CommandLine.AddFlagSet(fs)
}
if flagHelp != nil && *flagHelp {
flag.Usage()
}
if len(flag.Args()) == 0 {
flag.Usage()
}
if flagHost != nil {
os.Setenv("LIBSTORAGE_HOST", *flagHost)
}
if flagLogLvl != nil {
os.Setenv("LIBSTORAGE_LOGGING_LEVEL", *flagLogLvl)
}
if lvl, err := log.ParseLevel(
config.GetString(apitypes.ConfigLogLevel)); err == nil {
log.SetLevel(lvl)
}
if flagPrintConfig != nil && *flagPrintConfig {
jstr, err := config.ToJSON()
if err != nil {
fmt.Fprintf(os.Stderr, "%s: error: %v\n", os.Args[0], err)
os.Exit(1)
}
fmt.Fprintln(os.Stdout, jstr)
os.Exit(0)
}
buf := &bytes.Buffer{}
fmt.Fprintf(buf, "libstorage:\n server:\n services:\n")
for _, ds := range flag.Args() {
dsp := strings.Split(ds, ":")
dn := dsp[0]
sn := dsp[0]
if len(dsp) > 1 {
sn = dsp[1]
}
fmt.Fprintf(buf, " %s:\n driver: %s\n", sn, dn)
}
if err := config.ReadConfig(buf); err != nil {
fmt.Fprintf(os.Stderr, "%s: error: %v\n", os.Args[0], err)
os.Exit(1)
}
server.CloseOnAbort()
_, errs, err := server.Serve(nil, config)
if err != nil {
fmt.Fprintf(os.Stderr, "%s: error: %v\n", os.Args[0], err)
os.Exit(1)
}
<-errs
}
func (th *testHarness) run(
t *testing.T,
clientType types.ClientType,
driver string,
configBuf []byte,
debug, group bool,
tests ...APITestFunc) {
if !testing.Verbose() {
buf := &bytes.Buffer{}
log.StandardLogger().Out = buf
defer func() {
if t.Failed() {
io.Copy(os.Stderr, buf)
}
}()
}
wg := &sync.WaitGroup{}
if group {
config := getTestConfig(t, clientType, configBuf, debug)
configNames, configs := getTestConfigs(t, driver, config)
for x, config := range configs {
wg.Add(1)
go func(x int, config gofig.Config) {
defer wg.Done()
server, errs, err := apiserver.Serve(nil, config)
if err != nil {
th.closeServers(t)
t.Fatal(err)
}
go func() {
err := <-errs
if err != nil {
th.closeServers(t)
t.Fatalf("server (%s) error: %v", configNames[x], err)
}
}()
th.servers = append(th.servers, server)
c, err := client.New(nil, config)
assert.NoError(t, err)
assert.NotNil(t, c)
if err != nil || c == nil {
t.Fatalf("err=%v, client=%v", err, c)
}
for _, test := range tests {
test(config, c, t)
if t.Failed() && printConfigOnFail {
cj, err := config.ToJSON()
if err != nil {
t.Fatal(err)
}
fmt.Printf("client.config=%s\n", cj)
}
}
}(x, config)
}
} else {
for _, test := range tests {
config := getTestConfig(t, clientType, configBuf, debug)
configNames, configs := getTestConfigs(t, driver, config)
for x, config := range configs {
wg.Add(1)
go func(test APITestFunc, x int, config gofig.Config) {
defer wg.Done()
server, errs, err := apiserver.Serve(nil, config)
if err != nil {
th.closeServers(t)
t.Fatal(err)
}
go func() {
err := <-errs
if err != nil {
th.closeServers(t)
t.Fatalf("server (%s) error: %v", configNames[x], err)
}
}()
th.servers = append(th.servers, server)
c, err := client.New(nil, config)
if err != nil {
t.Fatal(err)
}
assert.NoError(t, err)
assert.NotNil(t, c)
if c == nil {
panic(fmt.Sprintf("err=%v, client=%v", err, c))
}
test(config, c, t)
if t.Failed() && printConfigOnFail {
cj, err := config.ToJSON()
if err != nil {
t.Fatal(err)
}
fmt.Printf("client.config=%s\n", cj)
}
}(test, x, config)
}
}
}
wg.Wait()
th.closeServers(t)
}
func activateLibStorage(
ctx apitypes.Context,
config gofig.Config) (apitypes.Context, gofig.Config, <-chan error, error) {
apiserver.DisableStartupInfo = true
var (
host string
err error
isRunning bool
errs chan error
serverErrChan <-chan error
server apitypes.Server
)
if host = config.GetString(apitypes.ConfigHost); host != "" {
if !config.GetBool(apitypes.ConfigEmbedded) {
ctx.WithField(
"host", host,
).Debug("not starting embedded server; embedded mode disabled")
return ctx, config, nil, nil
}
}
if host, isRunning = IsLocalServerActive(ctx, config); isRunning {
ctx = setHost(ctx, config, host)
ctx.WithField("host", host).Debug(
"not starting embedded server; already running")
return ctx, config, nil, nil
}
// if no host was specified then see if a set of default services need to
// be initialized
if host == "" {
ctx.Debug("host is empty; initiliazing default services")
if err = initDefaultLibStorageServices(ctx, config); err != nil {
ctx.WithError(err).Error("error initializing default services")
return ctx, config, nil, err
}
}
ctx.Debug("starting embedded libStorage server")
if server, serverErrChan, err = apiserver.Serve(ctx, config); err != nil {
ctx.WithError(err).Error("error starting libStorage server")
return ctx, config, nil, err
}
if host == "" {
host = server.Addrs()[0]
ctx.WithField("host", host).Debug("got host from new server address")
}
ctx = setHost(ctx, config, host)
errs = make(chan error)
go func() {
for err := range serverErrChan {
if err != nil {
errs <- err
}
}
if err := os.RemoveAll(SpecFilePath()); err == nil {
logHostSpec(ctx, host, "removed spec file")
}
close(errs)
}()
// write the host to the spec file so that other rex-ray invocations can
// find it, even if running as an embedded libStorage server
if err := WriteSpecFile(host); err != nil {
specFile := SpecFilePath()
if os.IsPermission(err) {
ctx.WithError(err).Errorf(
"user does not have write permissions for %s", specFile)
} else {
ctx.WithError(err).Errorf(
"error writing spec file at %s", specFile)
}
//WaitUntilLibStorageStopped(ctx, serverErrChan)
return ctx, config, errs, err
}
logHostSpec(ctx, host, "created spec file")
return ctx, config, errs, nil
}
