cosmos-sdk/x/stake/keeper/inflation.go
Rigel 6f140d7296 Merge PR #1119: Unbonding, Redelegation
* stake/fees spec updates
* staking overview.md revisions, moving files
* docs reorganization
* staking spec state revisions
* transaction stake updates
* complete staking spec update
* WIP adding unbonding/redelegation commands
* added msg types for unbonding, redelegation
* stake sub-package reorg
* working stake reorg
* modify lcd tests to not use hardcoded json strings
* add description update
* index keys
* key managment for unbonding redelegation complete
* update stake errors
* completed handleMsgCompleteUnbonding fn
* updated to use begin/complete unbonding/redelegation
* fix token shares bug
* develop docs into unbonding
* got non-tests compiling after merge develop
* working fixing tests
* PrivlegedKeeper -> PrivilegedKeeper
* tests compile
* fix some tests
* fixing tests
* remove PrivilegedKeeper
* get unbonding bug
* only rpc sig verification failed tests now
* move percent unbonding/redelegation to the CLI and out of handler logic
* remove min unbonding height
* add lcd txs
* add pool sanity checks, fix a buncha tests
* fix ante. set lcd log to debug (#1322)
* redelegation tests, adding query functionality for bonds
* add self-delegations at genesis ref #1165
* PR comments (mostly) addressed
* cleanup, added Query LCD functionality
* test cleanup/fixes
* fix governance test
* SlashValidatorSet -> ValidatorSet
* changelog
* stake lcd fix
* x/auth: fix chainID in ante
* fix lcd test
* fix lint, update lint make command for spelling
* lowercase error string
* don't expose coinkeeper in staking
* remove a few duplicate lines in changelog
* chain_id in stake lcd tests
* added transient redelegation
* 'transient' => 'transitive'
* Re-add nolint instruction
* Fix tiny linter error
2018-06-27 04:00:12 +02:00

54 lines
1.7 KiB
Go

package keeper
import (
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/stake/types"
)
const (
hrsPerYr = 8766 // as defined by a julian year of 365.25 days
precision = 100000000000 // increased to this precision for accuracy
)
var hrsPerYrRat = sdk.NewRat(hrsPerYr)
// process provisions for an hour period
func (k Keeper) ProcessProvisions(ctx sdk.Context) types.Pool {
pool := k.GetPool(ctx)
pool.Inflation = k.NextInflation(ctx)
provisions := pool.Inflation.Mul(sdk.NewRat(pool.TokenSupply())).Quo(hrsPerYrRat).Evaluate()
// TODO add to the fees provisions
pool.LooseTokens += provisions
return pool
}
// get the next inflation rate for the hour
func (k Keeper) NextInflation(ctx sdk.Context) (inflation sdk.Rat) {
params := k.GetParams(ctx)
pool := k.GetPool(ctx)
// The target annual inflation rate is recalculated for each previsions cycle. The
// inflation is also subject to a rate change (positive or negative) depending on
// the distance from the desired ratio (67%). The maximum rate change possible is
// defined to be 13% per year, however the annual inflation is capped as between
// 7% and 20%.
// (1 - bondedRatio/GoalBonded) * InflationRateChange
inflationRateChangePerYear := sdk.OneRat().Sub(pool.BondedRatio().Quo(params.GoalBonded)).Mul(params.InflationRateChange)
inflationRateChange := inflationRateChangePerYear.Quo(hrsPerYrRat)
// increase the new annual inflation for this next cycle
inflation = pool.Inflation.Add(inflationRateChange)
if inflation.GT(params.InflationMax) {
inflation = params.InflationMax
}
if inflation.LT(params.InflationMin) {
inflation = params.InflationMin
}
return inflation.Round(precision)
}