frostfs-api/proto-docs/accounting.md

Protocol Documentation

Table of Contents

• accounting/service.proto

  • Services

    • AccountingService

  • Messages

    • BalanceRequest
    • BalanceRequest.Body
    • BalanceResponse
    • BalanceResponse.Body

• accounting/types.proto

  • Messages
    • Decimal

• Scalar Value Types

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accounting/service.proto

Service "frost.fs.accounting.AccountingService"

Accounting service provides methods for interaction with FrostFS sidechain via other FrostFS nodes to get information about the account balance. Deposit and Withdraw operations can't be implemented here, as they require Mainnet FrostFS smart contract invocation. Transfer operations between internal FrostFS accounts are possible if both use the same token type.

rpc Balance(BalanceRequest) returns (BalanceResponse);

Method Balance

Returns the amount of funds in GAS token for the requested FrostFS account.

Statuses:

• OK (0, SECTION_SUCCESS): balance has been successfully read;
• Common failures (SECTION_FAILURE_COMMON).

Name	Input	Output
Balance	BalanceRequest	BalanceResponse

Message BalanceRequest

BalanceRequest message

Field	Type	Label	Description
body	BalanceRequest.Body		Body of the balance request message.
meta_header	frost.fs.session.RequestMetaHeader		Carries request meta information. Header data is used only to regulate message transport and does not affect request execution.
verify_header	frost.fs.session.RequestVerificationHeader		Carries request verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission.

Message BalanceRequest.Body

To indicate the account for which the balance is requested, its identifier is used. It can be any existing account in FrostFS sidechain Balance smart contract. If omitted, client implementation MUST set it to the request's signer OwnerID.

Field	Type	Label	Description
owner_id	frost.fs.refs.OwnerID		Valid user identifier in OwnerID format for which the balance is requested. Required field.

Message BalanceResponse

BalanceResponse message

Field	Type	Label	Description
body	BalanceResponse.Body		Body of the balance response message.
meta_header	frost.fs.session.ResponseMetaHeader		Carries response meta information. Header data is used only to regulate message transport and does not affect request execution.
verify_header	frost.fs.session.ResponseVerificationHeader		Carries response verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission.

Message BalanceResponse.Body

The amount of funds in GAS token for the OwnerID's account requested. Balance is given in the Decimal format to avoid precision issues with rounding.

Field	Type	Label	Description
balance	Decimal		Amount of funds in GAS token for the requested account.

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accounting/types.proto

Message Decimal

Standard floating point data type can't be used in FrostFS due to inexactness of the result when doing lots of small number operations. To solve the lost precision issue, special Decimal format is used for monetary computations.

Please see The General Decimal Arithmetic Specification for detailed problem description.

Field	Type	Label	Description
value	int64		Number in the smallest Token fractions.
precision	uint32		Precision value indicating how many smallest fractions can be in one integer.

Scalar Value Types

.proto Type	Notes	C++ Type	Java Type	Python Type
double		double	double	float
float		float	float	float
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
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
uint32	Uses variable-length encoding.	uint32	int	int/long
uint64	Uses variable-length encoding.	uint64	long	int/long
sint32	Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s.	int32	int	int
sint64	Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s.	int64	long	int/long
fixed32	Always four bytes. More efficient than uint32 if values are often greater than 2^28.	uint32	int	int
fixed64	Always eight bytes. More efficient than uint64 if values are often greater than 2^56.	uint64	long	int/long
sfixed32	Always four bytes.	int32	int	int
sfixed64	Always eight bytes.	int64	long	int/long
bool		bool	boolean	boolean
string	A string must always contain UTF-8 encoded or 7-bit ASCII text.	string	String	str/unicode
bytes	May contain any arbitrary sequence of bytes.	string	ByteString	str