mint

Documentation

Index

• Constants
• Variables
• func BeginBlocker(ctx sdk.Context, k Keeper)
• func InitGenesis(ctx sdk.Context, keeper Keeper, data GenesisState)
• func ParamKeyTable() params.KeyTable
• func ValidateGenesis(data GenesisState) error
• type FeeCollectionKeeper
• type GenesisState
  • func DefaultGenesisState() GenesisState
  • func ExportGenesis(ctx sdk.Context, keeper Keeper) GenesisState
  • func NewGenesisState(minter Minter, params Params) GenesisState
• type Keeper
  • func NewKeeper(cdc *codec.Codec, key sdk.StoreKey, paramSpace params.Subspace, ...) Keeper
  • func (k Keeper) GetMinter(ctx sdk.Context) (minter Minter)
  • func (k Keeper) GetParams(ctx sdk.Context) Params
  • func (k Keeper) SetMinter(ctx sdk.Context, minter Minter)
  • func (k Keeper) SetParams(ctx sdk.Context, params Params)
• type Minter
  • func DefaultInitialMinter() Minter
  • func InitialMinter(inflation sdk.Dec) Minter
  • func NewMinter(inflation, annualProvisions sdk.Dec) Minter
  • func (m Minter) BlockProvision(params Params) sdk.Coin
  • func (m Minter) NextAnnualProvisions(params Params, totalSupply sdk.Int) (provisions sdk.Dec)
  • func (m Minter) NextInflationRate(params Params, bondedRatio sdk.Dec) (inflation sdk.Dec)
• type Params
  • func DefaultParams() Params
  • func NewParams(mintDenom string, ...) Params
• type StakingKeeper

Constants

const (
	// default paramspace for params keeper
	DefaultParamspace = "mint"

	// StoreKey is the default store key for mint
	StoreKey = "mint"
)

Variables

var (

	// params store for inflation params
	ParamStoreKeyParams = []byte("params")
)

Functions

func BeginBlocker

func BeginBlocker(ctx sdk.Context, k Keeper)

Inflate every block, update inflation parameters once per hour

func InitGenesis

func InitGenesis(ctx sdk.Context, keeper Keeper, data GenesisState)

new mint genesis

func ParamKeyTable

func ParamKeyTable() params.KeyTable

ParamTable for staking module

func ValidateGenesis

func ValidateGenesis(data GenesisState) error

ValidateGenesis validates the provided staking genesis state to ensure the expected invariants holds. (i.e. params in correct bounds, no duplicate validators)

Types

type FeeCollectionKeeper

type FeeCollectionKeeper interface {
	AddCollectedFees(sdk.Context, sdk.Coins) sdk.Coins
}

expected fee collection keeper interface

type GenesisState

type GenesisState struct {
	Minter Minter `json:"minter"` // minter object
	Params Params `json:"params"` // inflation params
}

GenesisState - all distribution state that must be provided at genesis

func DefaultGenesisState

func DefaultGenesisState() GenesisState

get raw genesis raw message for testing

func ExportGenesis

func ExportGenesis(ctx sdk.Context, keeper Keeper) GenesisState

ExportGenesis returns a GenesisState for a given context and keeper. The GenesisState will contain the pool, and validator/delegator distribution info's

func NewGenesisState

func NewGenesisState(minter Minter, params Params) GenesisState

type Keeper

type Keeper struct {
	// contains filtered or unexported fields
}

keeper of the staking store

func NewKeeper

func NewKeeper(cdc *codec.Codec, key sdk.StoreKey,
	paramSpace params.Subspace, sk StakingKeeper, fck FeeCollectionKeeper) Keeper

func (Keeper) GetMinter

func (k Keeper) GetMinter(ctx sdk.Context) (minter Minter)

get the minter

func (Keeper) GetParams

func (k Keeper) GetParams(ctx sdk.Context) Params

get inflation params from the global param store

func (Keeper) SetMinter

func (k Keeper) SetMinter(ctx sdk.Context, minter Minter)

set the minter

func (Keeper) SetParams

func (k Keeper) SetParams(ctx sdk.Context, params Params)

set inflation params from the global param store

type Minter

type Minter struct {
	Inflation        sdk.Dec `json:"inflation"`         // current annual inflation rate
	AnnualProvisions sdk.Dec `json:"annual_provisions"` // current annual expected provisions
}

Minter represents the minting state

func DefaultInitialMinter

func DefaultInitialMinter() Minter

default initial minter object for a new chain which uses an inflation rate of 13%

func InitialMinter

func InitialMinter(inflation sdk.Dec) Minter

minter object for a new chain

func NewMinter

func NewMinter(inflation, annualProvisions sdk.Dec) Minter

Create a new minter object

func (Minter) BlockProvision

func (m Minter) BlockProvision(params Params) sdk.Coin

get the provisions for a block based on the annual provisions rate

func (Minter) NextAnnualProvisions

func (m Minter) NextAnnualProvisions(params Params, totalSupply sdk.Int) (
	provisions sdk.Dec)

calculate the annual provisions based on current total supply and inflation rate

func (Minter) NextInflationRate

func (m Minter) NextInflationRate(params Params, bondedRatio sdk.Dec) (
	inflation sdk.Dec)

get the new inflation rate for the next hour

type Params

type Params struct {
	MintDenom           string  `json:"mint_denom"`            // type of coin to mint
	InflationRateChange sdk.Dec `json:"inflation_rate_change"` // maximum annual change in inflation rate
	InflationMax        sdk.Dec `json:"inflation_max"`         // maximum inflation rate
	InflationMin        sdk.Dec `json:"inflation_min"`         // minimum inflation rate
	GoalBonded          sdk.Dec `json:"goal_bonded"`           // goal of percent bonded atoms
	BlocksPerYear       uint64  `json:"blocks_per_year"`       // expected blocks per year
}

mint parameters

func DefaultParams

func DefaultParams() Params

default minting module parameters

func NewParams

func NewParams(mintDenom string, inflationRateChange, inflationMax,
	inflationMin, goalBonded sdk.Dec, blocksPerYear uint64) Params

type StakingKeeper

type StakingKeeper interface {
	TotalTokens(ctx sdk.Context) sdk.Int
	BondedRatio(ctx sdk.Context) sdk.Dec
	InflateSupply(ctx sdk.Context, newTokens sdk.Int)
}

expected staking keeper