cosmos-sdk/x/staking/keeper/params.go
Amaury 5cd741a878
revert: Turn staking power reduction into an on-chain param (#9495)
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## Description

Closes: #9447

This PR partially reverts #8505. Namely:
- it removes PowerReduction as a staking on-chain param
- however, it keeps #8505's API changes regarding adding a `powerReduction` function argument to staking functions. This allows us to rely less on global variables in said functions.

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---

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- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
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2021-06-14 14:45:15 +00:00

65 lines
1.8 KiB
Go

package keeper
import (
"time"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/staking/types"
)
// UnbondingTime
func (k Keeper) UnbondingTime(ctx sdk.Context) (res time.Duration) {
k.paramstore.Get(ctx, types.KeyUnbondingTime, &res)
return
}
// MaxValidators - Maximum number of validators
func (k Keeper) MaxValidators(ctx sdk.Context) (res uint32) {
k.paramstore.Get(ctx, types.KeyMaxValidators, &res)
return
}
// MaxEntries - Maximum number of simultaneous unbonding
// delegations or redelegations (per pair/trio)
func (k Keeper) MaxEntries(ctx sdk.Context) (res uint32) {
k.paramstore.Get(ctx, types.KeyMaxEntries, &res)
return
}
// HistoricalEntries = number of historical info entries
// to persist in store
func (k Keeper) HistoricalEntries(ctx sdk.Context) (res uint32) {
k.paramstore.Get(ctx, types.KeyHistoricalEntries, &res)
return
}
// BondDenom - Bondable coin denomination
func (k Keeper) BondDenom(ctx sdk.Context) (res string) {
k.paramstore.Get(ctx, types.KeyBondDenom, &res)
return
}
// PowerReduction - is the amount of staking tokens required for 1 unit of consensus-engine power.
// Currently, this returns a global variable that the app developer can tweak.
// TODO: we might turn this into an on-chain param:
// https://github.com/cosmos/cosmos-sdk/issues/8365
func (k Keeper) PowerReduction(ctx sdk.Context) sdk.Int {
return sdk.DefaultPowerReduction
}
// Get all parameteras as types.Params
func (k Keeper) GetParams(ctx sdk.Context) types.Params {
return types.NewParams(
k.UnbondingTime(ctx),
k.MaxValidators(ctx),
k.MaxEntries(ctx),
k.HistoricalEntries(ctx),
k.BondDenom(ctx),
)
}
// set the params
func (k Keeper) SetParams(ctx sdk.Context, params types.Params) {
k.paramstore.SetParamSet(ctx, &params)
}