6.8 KiB
State
Pool
The pool is a space for all dynamic global state of the Cosmos Hub. It tracks information about the total amounts of Atoms in all states, moving Atom inflation information, etc.
- Pool:
0x01 -> amino(pool)
type Pool struct {
LooseTokens int64 // tokens not associated with any bonded validator
BondedTokens int64 // reserve of bonded tokens
}
Params
Params is global data structure that stores system parameters and defines overall functioning of the stake module.
- Params:
0x00 -> amino(params)
type Params struct {
MaxValidators uint16 // maximum number of validators
BondDenom string // bondable coin denomination
}
Validator
Validators are identified according to the OperatorAddr, an SDK validator
address for the operator of the validator.
Validators also have a ConsPubKey, the public key of the validator used in
Tendermint consensus. The validator can be retrieved from it's ConsPubKey
once it can be converted into the corresponding ConsAddr. Validators are
indexed in the store using the following maps:
- Validators:
0x02 | OperatorAddr -> amino(validator) - ValidatorsByConsAddr:
0x03 | ConsAddr -> OperatorAddr - ValidatorsByPower:
0x05 | power | blockHeight | blockTx -> OperatorAddr
Validators is the primary index - it ensures that each operator can have only one
associated validator, where the public key of that validator can change in the
future. Delegators can refer to the immutable operator of the validator, without
concern for the changing public key.
ValidatorsByPubKey is a secondary index that enables lookups for slashing.
When Tendermint reports evidence, it provides the validator address, so this
map is needed to find the operator.
ValidatorsByPower is a secondary index that provides a sorted list of
potential validators to quickly determine the current active set. For instance,
the first 100 validators in this list can be returned with every EndBlock.
The Validator holds the current state and some historical actions of the
validator.
type Validator struct {
ConsPubKey crypto.PubKey // Tendermint consensus pubkey of validator
Jailed bool // has the validator been jailed?
Status sdk.BondStatus // validator status (bonded/unbonding/unbonded)
Tokens sdk.Dec // delegated tokens (incl. self-delegation)
DelegatorShares sdk.Dec // total shares issued to a validator's delegators
SlashRatio sdk.Dec // increases each time the validator is slashed
Description Description // description terms for the validator
// Needed for ordering vals in the by-power key
BondHeight int64 // earliest height as a bonded validator
BondIntraTxCounter int16 // block-local tx index of validator change
CommissionInfo CommissionInfo // info about the validator's commission
}
type CommissionInfo struct {
Rate sdk.Dec // the commission rate of fees charged to any delegators
Max sdk.Dec // maximum commission rate which this validator can ever charge
ChangeRate sdk.Dec // maximum daily increase of the validator commission
ChangeToday sdk.Dec // commission rate change today, reset each day (UTC time)
LastChange int64 // unix timestamp of last commission change
}
type Description struct {
Moniker string // name
Identity string // optional identity signature (ex. UPort or Keybase)
Website string // optional website link
Details string // optional details
}
Delegation
Delegations are identified by combining DelegatorAddr (the address of the delegator)
with the OperatorAddr Delegators are indexed in the store as follows:
- Delegation:
0x0A | DelegatorAddr | OperatorAddr -> amino(delegation)
Atom holders may delegate coins to validators; under this circumstance their
funds are held in a Delegation data structure. It is owned by one
delegator, and is associated with the shares for one validator. The sender of
the transaction is the owner of the bond.
type Delegation struct {
Shares sdk.Dec // delegation shares received
Height int64 // last height bond updated
}
UnbondingDelegation
Shares in a Delegation can be unbonded, but they must for some time exist as an UnbondingDelegation, where shares can be reduced if Byzantine behavior is detected.
UnbondingDelegation are indexed in the store as:
- UnbondingDelegationByDelegator:
0x0B | DelegatorAddr | OperatorAddr -> amino(unbondingDelegation) - UnbondingDelegationByValOwner:
0x0C | OperatorAddr | DelegatorAddr | OperatorAddr -> nil
The first map here is used in queries, to lookup all unbonding delegations for a given delegator, while the second map is used in slashing, to lookup all unbonding delegations associated with a given validator that need to be slashed.
A UnbondingDelegation object is created every time an unbonding is initiated. The unbond must be completed with a second transaction provided by the delegation owner after the unbonding period has passed.
type UnbondingDelegation struct {
Tokens sdk.Coins // the value in Atoms of the amount of shares which are unbonding
CompleteTime int64 // unix time to complete redelegation
}
Redelegation
Shares in a Delegation can be rebonded to a different validator, but they must
for some time exist as a Redelegation, where shares can be reduced if Byzantine
behavior is detected. This is tracked as moving a delegation from a FromOperatorAddr
to a ToOperatorAddr.
Redelegation are indexed in the store as:
- Redelegations:
0x0D | DelegatorAddr | FromOperatorAddr | ToOperatorAddr -> amino(redelegation) - RedelegationsBySrc:
0x0E | FromOperatorAddr | ToOperatorAddr | DelegatorAddr -> nil - RedelegationsByDst:
0x0F | ToOperatorAddr | FromOperatorAddr | DelegatorAddr -> nil
The first map here is used for queries, to lookup all redelegations for a given
delegator. The second map is used for slashing based on the FromOperatorAddr,
while the third map is for slashing based on the ToValOwnerAddr.
A redelegation object is created every time a redelegation occurs. The redelegation must be completed with a second transaction provided by the delegation owner after the unbonding period has passed. The destination delegation of a redelegation may not itself undergo a new redelegation until the original redelegation has been completed.
type Redelegation struct {
SourceShares sdk.Dec // amount of source shares redelegating
DestinationShares sdk.Dec // amount of destination shares created at redelegation
CompleteTime int64 // unix time to complete redelegation
}