// initDefaultLibStorageServices initializes the config object with a default
// libStorage service if one is not present.
//
// TODO Move this into libStorage in libStorage 0.1.2
func initDefaultLibStorageServices(
ctx apitypes.Context, config gofig.Config) error {
if config.IsSet(apitypes.ConfigServices) {
ctx.Debug(
"libStorage auto service mode disabled; services defined")
return nil
}
serviceName := config.GetString(apitypes.ConfigService)
if serviceName == "" {
ctx.Debug(
"libStorage auto service mode disabled; service name empty")
return nil
}
ctx.WithField("driver", serviceName).Info(
"libStorage auto service mode enabled")
buf := &bytes.Buffer{}
fmt.Fprintf(buf, defaultServiceConfigFormat, serviceName)
if err := config.ReadConfig(buf); err != nil {
return err
}
return nil
}
// BackCompat ensures keys can be used from old configurations.
func BackCompat(config gofig.Config) {
ec2Checks := [][]string{
{ConfigEBSAccessKey, ConfigEC2AccessKey},
{ConfigEBSSecretKey, ConfigEC2SecretKey},
{ConfigEBSRegion, ConfigEC2Region},
{ConfigEBSEndpoint, ConfigEC2Endpoint},
{ConfigEBSMaxRetries, ConfigEC2MaxRetries},
{ConfigEBSTag, ConfigEC2Tag},
{ConfigEBSRexrayTag, ConfigEC2RexrayTag},
{ConfigEBSKmsKeyID, ConfigEC2KmsKeyID},
}
for _, check := range ec2Checks {
if !config.IsSet(check[0]) && config.IsSet(check[1]) {
log.Debug(config.Get(check[1]))
config.Set(check[0], config.Get(check[1]))
}
}
awsChecks := [][]string{
{ConfigEBSAccessKey, ConfigAWSAccessKey},
{ConfigEBSSecretKey, ConfigAWSSecretKey},
{ConfigEBSRegion, ConfigAWSRegion},
{ConfigEBSEndpoint, ConfigAWSEndpoint},
{ConfigEBSMaxRetries, ConfigAWSMaxRetries},
{ConfigEBSTag, ConfigAWSTag},
{ConfigEBSRexrayTag, ConfigAWSRexrayTag},
{ConfigEBSKmsKeyID, ConfigAWSKmsKeyID},
}
for _, check := range awsChecks {
if !config.IsSet(check[0]) && config.IsSet(check[1]) {
log.Debug(config.Get(check[1]))
config.Set(check[0], config.Get(check[1]))
}
}
}
func isSet(
config gofig.Config,
key string,
roots ...string) bool {
for _, r := range roots {
rk := strings.Replace(key, "libstorage.", fmt.Sprintf("%s.", r), 1)
if config.IsSet(rk) {
return true
}
}
if config.IsSet(key) {
return true
}
return false
}
// ActivateLibStorage activates libStorage and returns a possibly mutated
// context.
func ActivateLibStorage(
ctx apitypes.Context,
config gofig.Config) (apitypes.Context, gofig.Config, <-chan error, error) {
config = config.Scope("rexray")
// set the `libstorage.service` property to the value of
// `rexray.storageDrivers` if the former is not defined and the
// latter is
if !config.IsSet(apitypes.ConfigService) &&
config.IsSet("rexray.storageDrivers") {
if sd := config.GetStringSlice("rexray.storageDrivers"); len(sd) > 0 {
config.Set(apitypes.ConfigService, sd[0])
} else if sd := config.GetString("rexray.storageDrivers"); sd != "" {
config.Set(apitypes.ConfigService, sd)
}
}
if !config.IsSet(apitypes.ConfigIgVolOpsMountPath) {
config.Set(apitypes.ConfigIgVolOpsMountPath, LibFilePath("volumes"))
}
var (
err error
errs <-chan error
)
ctx, config, errs, err = activateLibStorage(ctx, config)
if err != nil {
return ctx, config, errs, err
}
return ctx, config, errs, nil
}
// BackCompat ensures keys can be used from old configurations.
func BackCompat(config gofig.Config) {
checks := [][]string{
{ConfigIgVolOpsMountPreempt, ConfigOldIntegrationVolMountPreempt},
{ConfigIgVolOpsCreateDisable, ConfigOldIntegrationVolCreateDisable},
{ConfigIgVolOpsRemoveDisable, ConfigOldIntegrationVolRemoveDisable},
{ConfigIgVolOpsUnmountIgnoreUsed, ConfigOldIntegrationVolUnmountIgnoreUsed},
{ConfigIgVolOpsPathCacheEnabled, ConfigOldIntegrationVolPathCache},
{ConfigIgVolOpsCreateDefaultFsType, ConfigOldDockerFsType},
{ConfigIgVolOpsCreateDefaultType, ConfigOldDockerVolumeType},
{ConfigIgVolOpsCreateDefaultIOPS, ConfigOldDockerIOPS},
{ConfigIgVolOpsCreateDefaultSize, ConfigOldDockerSize},
{ConfigIgVolOpsCreateDefaultAZ, ConfigOldDockerAvailabilityZone},
{ConfigIgVolOpsMountPath, ConfigOldDockerMountDirPath},
{ConfigIgVolOpsMountRootPath, ConfigOldDockerLinuxVolumeRootPath},
}
for _, check := range checks {
if !config.IsSet(check[0]) && config.IsSet(check[1]) {
log.Debug(config.Get(check[1]))
config.Set(check[0], config.Get(check[1]))
}
}
}
// New returns a new libStorage client.
func New(goCtx gocontext.Context, config gofig.Config) (types.Client, error) {
if config == nil {
var err error
if config, err = apicnfg.NewConfig(); err != nil {
return nil, err
}
}
config = config.Scope(types.ConfigClient)
types.BackCompat(config)
var (
c *client
err error
)
c = &client{ctx: context.New(goCtx), config: config}
c.ctx = c.ctx.WithValue(context.ClientKey, c)
logFields := log.Fields{}
logConfig, err := utils.ParseLoggingConfig(
config, logFields, "libstorage.client")
if err != nil {
return nil, err
}
// always update the server context's log level
context.SetLogLevel(c.ctx, logConfig.Level)
c.ctx.WithFields(logFields).Info("configured logging")
if config.IsSet(types.ConfigService) {
c.ctx = c.ctx.WithValue(
context.ServiceKey, config.GetString(types.ConfigService))
}
storDriverName := config.GetString(types.ConfigStorageDriver)
if storDriverName == "" {
c.ctx.Warn("no storage driver found")
} else {
if c.sd, err = registry.NewStorageDriver(storDriverName); err != nil {
return nil, err
}
if err = c.sd.Init(c.ctx, config); err != nil {
return nil, err
}
if papi, ok := c.sd.(types.ProvidesAPIClient); ok {
c.api = papi.API()
}
if pxli, pxliOk := c.sd.(types.ProvidesStorageExecutorCLI); pxliOk {
c.xli = pxli.XCLI()
}
c.ctx.Info("storage driver initialized")
}
// if the API or XLI are nil, then the storage driver is not the libStorage
// storage driver, and we should jump avoid any more initialization
if c.api == nil || c.xli == nil {
c.ctx.Info("created libStorage client")
return c, nil
}
osDriverName := config.GetString(types.ConfigOSDriver)
if osDriverName == "" {
c.ctx.Warn("no os driver found")
} else {
if c.od, err = registry.NewOSDriver(osDriverName); err != nil {
return nil, err
}
if err = c.od.Init(c.ctx, config); err != nil {
return nil, err
}
c.ctx.Info("os driver initialized")
}
intDriverName := config.GetString(types.ConfigIntegrationDriver)
if intDriverName == "" {
c.ctx.Warn("no integration driver found")
} else {
if c.id, err = registry.NewIntegrationDriver(
intDriverName); err != nil {
return nil, err
}
if err := c.id.Init(c.ctx, config); err != nil {
return nil, err
}
c.ctx.Info("integration driver initialized")
}
c.ctx.Info("created libStorage client")
return c, nil
}