stake

package
v0.4.0 Latest Latest
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 Go to latest Published: Apr 9, 2018 License: Apache-2.0 Imports: 15 Imported by: 0

Documentation

Overview

nolint

Index

Constants

View Source 
const (
	GasDeclareCandidacy int64 = 20
	GasEditCandidacy    int64 = 20
	GasDelegate         int64 = 20
	GasUnbond           int64 = 20
)

nolint

View Source 
const MsgType = "stake"

name to idetify transaction types

View Source 
const StakingToken = "fermion"

XXX remove: think it makes more sense belonging with the Params so we can initialize at genesis - to allow for the same tests we should should make the ValidateBasic() function a return from an initializable function ValidateBasic(bondDenom string) function

Variables

View Source 
var (
	// Keys for store prefixes
	ParamKey               = []byte{0x00} // key for global parameters relating to staking
	PoolKey                = []byte{0x01} // key for global parameters relating to staking
	CandidatesKey          = []byte{0x02} // prefix for each key to a candidate
	ValidatorsKey          = []byte{0x03} // prefix for each key to a validator
	AccUpdateValidatorsKey = []byte{0x04} // prefix for each key to a validator which is being updated
	RecentValidatorsKey    = []byte{0x05} // prefix for each key to the last updated validator group

	ToKickOutValidatorsKey = []byte{0x06} // prefix for each key to the last updated validator group

	DelegatorBondKeyPrefix = []byte{0x07} // prefix for each key to a delegator's bond
)

nolint

Functions

func AddrFromKey 

func AddrFromKey(key []byte) sdk.Address

reverse operation of GetRecentValidatorKey

func ErrBadBondingAmount 

func ErrBadBondingAmount() sdk.Error

func ErrBadBondingDenom 

func ErrBadBondingDenom() sdk.Error

func ErrBadCandidateAddr 

func ErrBadCandidateAddr() sdk.Error

func ErrBadDelegatorAddr 

func ErrBadDelegatorAddr() sdk.Error

func ErrBadRemoveValidator 

func ErrBadRemoveValidator() sdk.Error

func ErrBadShares 

func ErrBadShares() sdk.Error

func ErrBadValidatorAddr 

func ErrBadValidatorAddr() sdk.Error

func ErrBondNotNominated 

func ErrBondNotNominated() sdk.Error

func ErrCandidateEmpty 

func ErrCandidateEmpty() sdk.Error

func ErrCandidateExistsAddr 

func ErrCandidateExistsAddr() sdk.Error

func ErrCandidateRevoked 

func ErrCandidateRevoked() sdk.Error

func ErrCommissionHuge 

func ErrCommissionHuge() sdk.Error

func ErrCommissionNegative 

func ErrCommissionNegative() sdk.Error

func ErrInsufficientFunds 

func ErrInsufficientFunds() sdk.Error

func ErrMissingSignature 

func ErrMissingSignature() sdk.Error

func ErrNoBondingAcct 

func ErrNoBondingAcct() sdk.Error

func ErrNoCandidateForAddress 

func ErrNoCandidateForAddress() sdk.Error

func ErrNoDelegatorForAddress 

func ErrNoDelegatorForAddress() sdk.Error

func ErrNotEnoughBondShares 

func ErrNotEnoughBondShares(shares string) sdk.Error

func GetAccUpdateValidatorKey 

func GetAccUpdateValidatorKey(addr sdk.Address) []byte

get the key for the accumulated update validators

func GetCandidateKey 

func GetCandidateKey(addr sdk.Address) []byte

get the key for the candidate with address

func GetDelegatorBondKey 

func GetDelegatorBondKey(delegatorAddr, candidateAddr sdk.Address, cdc *wire.Codec) []byte

get the key for delegator bond with candidate

func GetDelegatorBondsKey 

func GetDelegatorBondsKey(delegatorAddr sdk.Address, cdc *wire.Codec) []byte

get the prefix for a delegator for all candidates

func GetRecentValidatorKey 

func GetRecentValidatorKey(addr sdk.Address) []byte

get the key for the accumulated update validators

func GetToKickOutValidatorKey 

func GetToKickOutValidatorKey(addr sdk.Address) []byte

get the key for the accumulated update validators

func GetValidatorKey 

func GetValidatorKey(addr sdk.Address, power sdk.Rat, cdc *wire.Codec) []byte

get the key for the validator used in the power-store

func NewEndBlocker 

func NewEndBlocker(k Keeper) sdk.EndBlocker

NewEndBlocker generates sdk.EndBlocker Performs tick functionality

func NewHandler 

func NewHandler(k Keeper, ck bank.CoinKeeper) sdk.Handler

func RegisterWire 

func RegisterWire(cdc *wire.Codec)

XXX complete

Types

type Candidate 

type Candidate struct {
	Status      CandidateStatus `json:"status"`      // Bonded status
	Address     sdk.Address     `json:"owner"`       // Sender of BondTx - UnbondTx returns here
	PubKey      crypto.PubKey   `json:"pub_key"`     // Pubkey of candidate
	Assets      sdk.Rat         `json:"assets"`      // total shares of a global hold pools
	Liabilities sdk.Rat         `json:"liabilities"` // total shares issued to a candidate's delegators
	Description Description     `json:"description"` // Description terms for the candidate
}

Candidate defines the total amount of bond shares and their exchange rate to coins. Accumulation of interest is modelled as an in increase in the exchange rate, and slashing as a decrease. When coins are delegated to this candidate, the candidate is credited with a DelegatorBond whose number of bond shares is based on the amount of coins delegated divided by the current exchange rate. Voting power can be calculated as total bonds multiplied by exchange rate.

func NewCandidate 

func NewCandidate(address sdk.Address, pubKey crypto.PubKey, description Description) Candidate

NewCandidate - initialize a new candidate

type CandidateStatus 

type CandidateStatus byte

CandidateStatus - status of a validator-candidate 

const (
	// nolint
	Bonded   CandidateStatus = 0x00
	Unbonded CandidateStatus = 0x01
	Revoked  CandidateStatus = 0x02
)

type Candidates 

type Candidates []Candidate

Candidates - list of Candidates

type CodeType 

type CodeType = sdk.CodeType
const (
	// Gaia errors reserve 200 ~ 299.
	CodeInvalidValidator CodeType = 201
	CodeInvalidCandidate CodeType = 202
	CodeInvalidBond      CodeType = 203
	CodeInvalidInput     CodeType = 204
	CodeUnauthorized     CodeType = sdk.CodeUnauthorized
	CodeInternal         CodeType = sdk.CodeInternal
	CodeUnknownRequest   CodeType = sdk.CodeUnknownRequest
)

type DelegatorBond 

type DelegatorBond struct {
	DelegatorAddr sdk.Address `json:"delegatoraddr"`
	CandidateAddr sdk.Address `json:"candidate_addr"`
	Shares        sdk.Rat     `json:"shares"`
}

DelegatorBond represents the bond with tokens held by an account. It is owned by one delegator, and is associated with the voting power of one pubKey. TODO better way of managing space

type Description 

type Description struct {
	Moniker  string `json:"moniker"`
	Identity string `json:"identity"`
	Website  string `json:"website"`
	Details  string `json:"details"`
}

Description - description fields for a candidate

func NewDescription 

func NewDescription(moniker, identity, website, details string) Description

type GenesisState 

type GenesisState struct {
	Pool   Pool   `json:"pool"`
	Params Params `json:"params"`
}

GenesisState - all staking state that must be provided at genesis

type Keeper 

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

keeper of the staking store

func NewKeeper 

func NewKeeper(ctx sdk.Context, cdc *wire.Codec, key sdk.StoreKey, ck bank.CoinKeeper) Keeper

func (Keeper) GetCandidate 

func (k Keeper) GetCandidate(ctx sdk.Context, addr sdk.Address) (candidate Candidate, found bool)

get a single candidate

func (Keeper) GetCandidates 

func (k Keeper) GetCandidates(ctx sdk.Context, maxRetrieve int16) (candidates Candidates)

Get the set of all candidates, retrieve a maxRetrieve number of records

func (Keeper) GetParams 

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

load/save the global staking params

func (Keeper) GetPool 

func (k Keeper) GetPool(ctx sdk.Context) (gs Pool)

load/save the pool

func (Keeper) GetValidators 

func (k Keeper) GetValidators(ctx sdk.Context) (validators []Validator)

Get the validator set from the candidates. The correct subset is retrieved by iterating through an index of the candidates sorted by power, stored using the ValidatorsKey. Simultaniously the most recent the validator records are updated in store with the RecentValidatorsKey. This store is used to determine if a candidate is a validator without needing to iterate over the subspace as we do in GetValidators

func (Keeper) InitGenesis 

func (k Keeper) InitGenesis(ctx sdk.Context, data json.RawMessage) error

InitGenesis - store genesis parameters

func (Keeper) IsRecentValidator 

func (k Keeper) IsRecentValidator(ctx sdk.Context, address sdk.Address) bool

Is the address provided a part of the most recently saved validator group?

func (Keeper) Tick 

func (k Keeper) Tick(ctx sdk.Context) (change []abci.Validator)

Tick - called at the end of every block

type MsgDeclareCandidacy 

type MsgDeclareCandidacy struct {
	Description
	CandidateAddr sdk.Address   `json:"address"`
	PubKey        crypto.PubKey `json:"pubkey"`
	Bond          sdk.Coin      `json:"bond"`
}

MsgDeclareCandidacy - struct for unbonding transactions

func NewMsgDeclareCandidacy 

func NewMsgDeclareCandidacy(candidateAddr sdk.Address, pubkey crypto.PubKey,
	bond sdk.Coin, description Description) MsgDeclareCandidacy

func (MsgDeclareCandidacy) Get 

func (msg MsgDeclareCandidacy) Get(key interface{}) (value interface{})

func (MsgDeclareCandidacy) GetSignBytes 

func (msg MsgDeclareCandidacy) GetSignBytes() []byte

get the bytes for the message signer to sign on

func (MsgDeclareCandidacy) GetSigners 

func (msg MsgDeclareCandidacy) GetSigners() []sdk.Address

func (MsgDeclareCandidacy) String 

func (msg MsgDeclareCandidacy) String() string

func (MsgDeclareCandidacy) Type 

func (msg MsgDeclareCandidacy) Type() string

nolint

func (MsgDeclareCandidacy) ValidateBasic 

func (msg MsgDeclareCandidacy) ValidateBasic() sdk.Error

quick validity check

type MsgDelegate 

type MsgDelegate struct {
	DelegatorAddr sdk.Address `json:"address"`
	CandidateAddr sdk.Address `json:"address"`
	Bond          sdk.Coin    `json:"bond"`
}

MsgDelegate - struct for bonding transactions

func NewMsgDelegate 

func NewMsgDelegate(delegatorAddr, candidateAddr sdk.Address, bond sdk.Coin) MsgDelegate

func (MsgDelegate) Get 

func (msg MsgDelegate) Get(key interface{}) (value interface{})

func (MsgDelegate) GetSignBytes 

func (msg MsgDelegate) GetSignBytes() []byte

get the bytes for the message signer to sign on

func (MsgDelegate) GetSigners 

func (msg MsgDelegate) GetSigners() []sdk.Address

func (MsgDelegate) String 

func (msg MsgDelegate) String() string

func (MsgDelegate) Type 

func (msg MsgDelegate) Type() string

nolint

func (MsgDelegate) ValidateBasic 

func (msg MsgDelegate) ValidateBasic() sdk.Error

quick validity check

type MsgEditCandidacy 

type MsgEditCandidacy struct {
	Description
	CandidateAddr sdk.Address `json:"address"`
}

MsgEditCandidacy - struct for editing a candidate

func NewMsgEditCandidacy 

func NewMsgEditCandidacy(candidateAddr sdk.Address, description Description) MsgEditCandidacy

func (MsgEditCandidacy) Get 

func (msg MsgEditCandidacy) Get(key interface{}) (value interface{})

func (MsgEditCandidacy) GetSignBytes 

func (msg MsgEditCandidacy) GetSignBytes() []byte

get the bytes for the message signer to sign on

func (MsgEditCandidacy) GetSigners 

func (msg MsgEditCandidacy) GetSigners() []sdk.Address

func (MsgEditCandidacy) String 

func (msg MsgEditCandidacy) String() string

func (MsgEditCandidacy) Type 

func (msg MsgEditCandidacy) Type() string

nolint

func (MsgEditCandidacy) ValidateBasic 

func (msg MsgEditCandidacy) ValidateBasic() sdk.Error

quick validity check

type MsgUnbond 

type MsgUnbond struct {
	DelegatorAddr sdk.Address `json:"address"`
	CandidateAddr sdk.Address `json:"address"`
	Shares        string      `json:"shares"`
}

MsgUnbond - struct for unbonding transactions

func NewMsgUnbond 

func NewMsgUnbond(delegatorAddr, candidateAddr sdk.Address, shares string) MsgUnbond

func (MsgUnbond) Get 

func (msg MsgUnbond) Get(key interface{}) (value interface{})

func (MsgUnbond) GetSignBytes 

func (msg MsgUnbond) GetSignBytes() []byte

get the bytes for the message signer to sign on

func (MsgUnbond) GetSigners 

func (msg MsgUnbond) GetSigners() []sdk.Address

func (MsgUnbond) String 

func (msg MsgUnbond) String() string

func (MsgUnbond) Type 

func (msg MsgUnbond) Type() string

nolint

func (MsgUnbond) ValidateBasic 

func (msg MsgUnbond) ValidateBasic() sdk.Error

quick validity check

type Params 

type Params struct {
	InflationRateChange sdk.Rat `json:"inflation_rate_change"` // maximum annual change in inflation rate
	InflationMax        sdk.Rat `json:"inflation_max"`         // maximum inflation rate
	InflationMin        sdk.Rat `json:"inflation_min"`         // minimum inflation rate
	GoalBonded          sdk.Rat `json:"goal_bonded"`           // Goal of percent bonded atoms

	MaxValidators uint16 `json:"max_validators"` // maximum number of validators
	BondDenom     string `json:"bond_denom"`     // bondable coin denomination
}

Params defines the high level settings for staking

type Pool 

type Pool struct {
	TotalSupply       int64   `json:"total_supply"`        // total supply of all tokens
	BondedShares      sdk.Rat `json:"bonded_shares"`       // sum of all shares distributed for the Bonded Pool
	UnbondedShares    sdk.Rat `json:"unbonded_shares"`     // sum of all shares distributed for the Unbonded Pool
	BondedPool        int64   `json:"bonded_pool"`         // reserve of bonded tokens
	UnbondedPool      int64   `json:"unbonded_pool"`       // reserve of unbonded tokens held with candidates
	InflationLastTime int64   `json:"inflation_last_time"` // block which the last inflation was processed // TODO make time
	Inflation         sdk.Rat `json:"inflation"`           // current annual inflation rate
}

Pool - dynamic parameters of the current state

type Validator 

type Validator struct {
	Address sdk.Address   `json:"address"`
	PubKey  crypto.PubKey `json:"pub_key"`
	Power   sdk.Rat       `json:"voting_power"`
}

Validator is one of the top Candidates

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