cosmos-sdk/x/distribution/types/expected_keepers.go

package types

import (
	sdk "github.com/cosmos/cosmos-sdk/types"
	"github.com/cosmos/cosmos-sdk/x/staking"
	stakingexported "github.com/cosmos/cosmos-sdk/x/staking/exported"
	supplyexported "github.com/cosmos/cosmos-sdk/x/supply/exported"
)

// StakingKeeper expected staking keeper (noalias)
type StakingKeeper interface {
	// iterate through validators by operator address, execute func for each validator
	IterateValidators(sdk.Context,
		func(index int64, validator stakingexported.ValidatorI) (stop bool))

	// iterate through bonded validators by operator address, execute func for each validator
	IterateBondedValidatorsByPower(sdk.Context,
		func(index int64, validator stakingexported.ValidatorI) (stop bool))

	// iterate through the consensus validator set of the last block by operator address, execute func for each validator
	IterateLastValidators(sdk.Context,
		func(index int64, validator stakingexported.ValidatorI) (stop bool))

	Validator(sdk.Context, sdk.ValAddress) stakingexported.ValidatorI            // get a particular validator by operator address
	ValidatorByConsAddr(sdk.Context, sdk.ConsAddress) stakingexported.ValidatorI // get a particular validator by consensus address

	// slash the validator and delegators of the validator, specifying offence height, offence power, and slash fraction
	Slash(sdk.Context, sdk.ConsAddress, int64, int64, sdk.Dec)
	Jail(sdk.Context, sdk.ConsAddress)   // jail a validator
	Unjail(sdk.Context, sdk.ConsAddress) // unjail a validator

	// Delegation allows for getting a particular delegation for a given validator
	// and delegator outside the scope of the staking module.
	Delegation(sdk.Context, sdk.AccAddress, sdk.ValAddress) stakingexported.DelegationI

	// MaxValidators returns the maximum amount of bonded validators
	MaxValidators(sdk.Context) uint16

	IterateDelegations(ctx sdk.Context, delegator sdk.AccAddress,
		fn func(index int64, delegation stakingexported.DelegationI) (stop bool))

	GetLastTotalPower(ctx sdk.Context) sdk.Int
	GetLastValidatorPower(ctx sdk.Context, valAddr sdk.ValAddress) int64

	GetAllSDKDelegations(ctx sdk.Context) []staking.Delegation
}

// StakingHooks event hooks for staking validator object (noalias)
type StakingHooks interface {
	AfterValidatorCreated(ctx sdk.Context, valAddr sdk.ValAddress)                           // Must be called when a validator is created
	AfterValidatorRemoved(ctx sdk.Context, consAddr sdk.ConsAddress, valAddr sdk.ValAddress) // Must be called when a validator is deleted

	BeforeDelegationCreated(ctx sdk.Context, delAddr sdk.AccAddress, valAddr sdk.ValAddress)        // Must be called when a delegation is created
	BeforeDelegationSharesModified(ctx sdk.Context, delAddr sdk.AccAddress, valAddr sdk.ValAddress) // Must be called when a delegation's shares are modified
	AfterDelegationModified(ctx sdk.Context, delAddr sdk.AccAddress, valAddr sdk.ValAddress)
	BeforeValidatorSlashed(ctx sdk.Context, valAddr sdk.ValAddress, fraction sdk.Dec)
}

// SupplyKeeper defines the expected supply Keeper (noalias)
type SupplyKeeper interface {
	GetModuleAddress(name string) sdk.AccAddress
	GetModuleAccount(ctx sdk.Context, name string) supplyexported.ModuleAccountI

	// TODO remove with genesis 2-phases refactor https://github.com/cosmos/cosmos-sdk/issues/2862
	SetModuleAccount(sdk.Context, supplyexported.ModuleAccountI)

	SendCoinsFromModuleToModule(ctx sdk.Context, senderModule string, recipientModule string, amt sdk.Coins) sdk.Error
	SendCoinsFromModuleToAccount(ctx sdk.Context, senderModule string, recipientAddr sdk.AccAddress, amt sdk.Coins) sdk.Error
	SendCoinsFromAccountToModule(ctx sdk.Context, senderAddr sdk.AccAddress, recipientModule string, amt sdk.Coins) sdk.Error
}