func newConfiguredStorage(newLog spec.Log, storageType, storagePrefix, storageAddr string) (spec.Storage, error) {
var newStorage spec.Storage
var err error
switch storageType {
case "redis":
newStorageConfig := redis.DefaultStorageConfigWithAddr(storageAddr)
newStorageConfig.BackoffFactory = func() spec.Backoff {
return backoff.NewExponentialBackOff()
}
newStorageConfig.Instrumentation, err = newPrometheusInstrumentation([]string{"Feature", "Storage", "Redis"})
if err != nil {
return nil, maskAny(err)
}
newStorageConfig.Log = newLog
newStorageConfig.Prefix = storagePrefix
newStorage, err = redis.NewStorage(newStorageConfig)
if err != nil {
return nil, maskAny(err)
}
case "memory":
newStorage, err = memory.NewStorage(memory.DefaultStorageConfig())
if err != nil {
return nil, maskAny(err)
}
default:
return nil, maskAnyf(invalidStorageFlagError, "%s", storageType)
}
return newStorage, nil
}
// NewStorage creates a new configured memory storage object. Therefore it
// manages an in-memory redis instance which can be shut down using the
// configured closer. This is used for local development.
func NewStorage(config StorageConfig) (spec.Storage, error) {
addrChan := make(chan string, 1)
closer := make(chan struct{}, 1)
redisAddr := ""
go func() {
s, err := miniredis.Run()
if err != nil {
panic(err)
}
addrChan <- s.Addr()
<-closer
s.Close()
}()
select {
case <-time.After(1 * time.Second):
panic("starting miniredis timed out")
case addr := <-addrChan:
redisAddr = addr
}
newRedisStorageConfig := redis.DefaultStorageConfigWithAddr(redisAddr)
newRedisStorageConfig.BackoffFactory = func() spec.Backoff {
return backoff.NewExponentialBackOff()
}
newRedisStorage, err := redis.NewStorage(newRedisStorageConfig)
if err != nil {
return nil, maskAny(err)
}
newStorage := &storage{
StorageConfig: config,
Closer: closer,
ID: id.MustNewID(),
RedisStorage: newRedisStorage,
ShutdownOnce: sync.Once{},
Type: ObjectType,
}
return newStorage, nil
}