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genesis.go
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genesis.go
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package stake
import (
"fmt"
abci "github.com/tendermint/tendermint/abci/types"
tmtypes "github.com/tendermint/tendermint/types"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/stake/types"
"github.com/pkg/errors"
)
// InitGenesis sets the pool and parameters for the provided keeper and
// initializes the IntraTxCounter. For each validator in data, it sets that
// validator in the keeper along with manually setting the indexes. In
// addition, it also sets any delegations found in data. Finally, it updates
// the bonded validators.
// Returns final validator set after applying all declaration and delegations
func InitGenesis(ctx sdk.Context, keeper Keeper, data types.GenesisState) (res []abci.ValidatorUpdate, err error) {
// We need to pretend to be "n blocks before genesis", where "n" is the validator update delay,
// so that e.g. slashing periods are correctly initialized for the validator set
// e.g. with a one-block offset - the first TM block is at height 0, so state updates applied from genesis.json are in block -1.
ctx = ctx.WithBlockHeight(-types.ValidatorUpdateDelay)
keeper.SetPool(ctx, data.Pool)
keeper.SetParams(ctx, data.Params)
for i, validator := range data.Validators {
validator.BondIntraTxCounter = int16(i) // set the intra-tx counter to the order the validators are presented
keeper.SetValidator(ctx, validator)
if validator.Tokens.IsZero() {
return res, errors.Errorf("genesis validator cannot have zero pool shares, validator: %v", validator)
}
if validator.DelegatorShares.IsZero() {
return res, errors.Errorf("genesis validator cannot have zero delegator shares, validator: %v", validator)
}
// Manually set indices for the first time
keeper.SetValidatorByConsAddr(ctx, validator)
keeper.SetValidatorByPowerIndex(ctx, validator, data.Pool)
keeper.OnValidatorCreated(ctx, validator.OperatorAddr)
}
for _, delegation := range data.Bonds {
keeper.SetDelegation(ctx, delegation)
keeper.OnDelegationCreated(ctx, delegation.DelegatorAddr, delegation.ValidatorAddr)
}
res = keeper.ApplyAndReturnValidatorSetUpdates(ctx)
return
}
// WriteGenesis returns a GenesisState for a given context and keeper. The
// GenesisState will contain the pool, params, validators, and bonds found in
// the keeper.
func WriteGenesis(ctx sdk.Context, keeper Keeper) types.GenesisState {
pool := keeper.GetPool(ctx)
params := keeper.GetParams(ctx)
validators := keeper.GetAllValidators(ctx)
bonds := keeper.GetAllDelegations(ctx)
return types.GenesisState{
Pool: pool,
Params: params,
Validators: validators,
Bonds: bonds,
}
}
// WriteValidators returns a slice of bonded genesis validators.
func WriteValidators(ctx sdk.Context, keeper Keeper) (vals []tmtypes.GenesisValidator) {
keeper.IterateValidatorsBonded(ctx, func(_ int64, validator sdk.Validator) (stop bool) {
vals = append(vals, tmtypes.GenesisValidator{
PubKey: validator.GetConsPubKey(),
Power: validator.GetPower().RoundInt64(),
Name: validator.GetMoniker(),
})
return false
})
return
}
// ValidateGenesis validates the provided staking genesis state to ensure the
// expected invariants holds. (i.e. params in correct bounds, no duplicate validators)
func ValidateGenesis(data types.GenesisState) error {
err := validateGenesisStateValidators(data.Validators)
if err != nil {
return err
}
err = validateParams(data.Params)
if err != nil {
return err
}
return nil
}
func validateParams(params types.Params) error {
if params.BondDenom == "" {
return fmt.Errorf("staking parameter BondDenom can't be an empty string")
}
return nil
}
func validateGenesisStateValidators(validators []types.Validator) (err error) {
addrMap := make(map[string]bool, len(validators))
for i := 0; i < len(validators); i++ {
val := validators[i]
strKey := string(val.ConsPubKey.Bytes())
if _, ok := addrMap[strKey]; ok {
return fmt.Errorf("duplicate validator in genesis state: moniker %v, Address %v", val.Description.Moniker, val.ConsAddress())
}
if val.Jailed && val.Status == sdk.Bonded {
return fmt.Errorf("validator is bonded and jailed in genesis state: moniker %v, Address %v", val.Description.Moniker, val.ConsAddress())
}
if val.Tokens.IsZero() {
return fmt.Errorf("genesis validator cannot have zero pool shares, validator: %v", val)
}
if val.DelegatorShares.IsZero() {
return fmt.Errorf("genesis validator cannot have zero delegator shares, validator: %v", val)
}
addrMap[strKey] = true
}
return
}