retention

type Config struct {
	Enabled       bool          `toml:"enabled"`
	CheckInterval toml.Duration `toml:"check-interval"`
}

type MetaClient interface {
	Databases() []meta.DatabaseInfo
	DeleteShardGroup(database, policy string, id uint64) error
	DropShard(id uint64) error
	PruneShardGroups() error
}

type Service struct {
	MetaClient
	TSDBStore interface {
		ShardIDs() []uint64
		DeleteShard(shardID uint64) error

		SetShardNewReadersBlocked(shardID uint64, blocked bool) error
		ShardInUse(shardID uint64) (bool, error)
	}

	// DropShardRef is a function that takes a shard ID and removes the
	// "reference" to it in the meta data. For OSS, this would be a DropShard
	// operation. For Enterprise, this would be a RemoveShardOwner operation.
	// Also provided is owners, the list of node IDs of the shard owners
	// according to the meta store. For OSS, owners will always be empty.
	// Enterprise can use owners to optimize out calls to RemoveShardOwner
	// if the current node doesn't actually own the shardID. This prevents
	// a lot of unnecessary RPC calls.
	DropShardMetaRef func(shardID uint64, owners []uint64) error
	// contains filtered or unexported fields
}