# Protocol Documentation <a name="top"></a> ## Table of Contents - [storagegroup/types.proto](#storagegroup/types.proto) - Messages - [StorageGroup](#storagegroup.StorageGroup) - [StorageGroup.Lifetime](#storagegroup.StorageGroup.Lifetime) - [Scalar Value Types](#scalar-value-types) <a name="storagegroup/types.proto"></a> <p align="right"><a href="#top">Top</a></p> ## storagegroup/types.proto <!-- end services --> <a name="storagegroup.StorageGroup"></a> ### Message StorageGroup | Field | Type | Label | Description | | ----- | ---- | ----- | ----------- | | ValidationDataSize | [uint64](#uint64) | | ValidationDataSize is size of the all object's payloads included into storage group | | ValidationHash | [bytes](#bytes) | | ValidationHash is homomorphic hash of all object's payloads included into storage group | | lifetime | [StorageGroup.Lifetime](#storagegroup.StorageGroup.Lifetime) | | Lifetime is time until storage group is valid | | Members | [refs.ObjectID](#refs.ObjectID) | repeated | Members carries the list of identifiers of the object storage group members. The list is strictly ordered. | <a name="storagegroup.StorageGroup.Lifetime"></a> ### Message StorageGroup.Lifetime | Field | Type | Label | Description | | ----- | ---- | ----- | ----------- | | unit | [StorageGroup.Lifetime.Unit](#storagegroup.StorageGroup.Lifetime.Unit) | | Unit is lifetime type | | Value | [int64](#int64) | | Value for lifetime | <!-- end messages --> <a name="storagegroup.StorageGroup.Lifetime.Unit"></a> ### StorageGroup.Lifetime.Unit | Name | Number | Description | | ---- | ------ | ----------- | | Unlimited | 0 | Unlimited set if storage group always valid | | NeoFSEpoch | 1 | NeoFSEpoch set if storage group is valid until lifetime NeoFS epoch | | UnixTime | 2 | UnixTime set if storage group is valid until lifetime unix timestamp | <!-- end enums --> ## Scalar Value Types | .proto Type | Notes | C++ Type | Java Type | Python Type | | ----------- | ----- | -------- | --------- | ----------- | | <a name="double" /> double | | double | double | float | | <a name="float" /> float | | float | float | float | | <a name="int32" /> int32 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead. | int32 | int | int | | <a name="int64" /> int64 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead. | int64 | long | int/long | | <a name="uint32" /> uint32 | Uses variable-length encoding. | uint32 | int | int/long | | <a name="uint64" /> uint64 | Uses variable-length encoding. | uint64 | long | int/long | | <a name="sint32" /> sint32 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s. | int32 | int | int | | <a name="sint64" /> sint64 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s. | int64 | long | int/long | | <a name="fixed32" /> fixed32 | Always four bytes. More efficient than uint32 if values are often greater than 2^28. | uint32 | int | int | | <a name="fixed64" /> fixed64 | Always eight bytes. More efficient than uint64 if values are often greater than 2^56. | uint64 | long | int/long | | <a name="sfixed32" /> sfixed32 | Always four bytes. | int32 | int | int | | <a name="sfixed64" /> sfixed64 | Always eight bytes. | int64 | long | int/long | | <a name="bool" /> bool | | bool | boolean | boolean | | <a name="string" /> string | A string must always contain UTF-8 encoded or 7-bit ASCII text. | string | String | str/unicode | | <a name="bytes" /> bytes | May contain any arbitrary sequence of bytes. | string | ByteString | str |