upgrades

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Published: Sep 11, 2024 License: MIT Imports: 6 Imported by: 0

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type BaseAppParamManager

type BaseAppParamManager interface {
	GetConsensusParams(ctx sdk.Context) tmproto.ConsensusParams
	StoreConsensusParams(ctx sdk.Context, cp tmproto.ConsensusParams) error
}

BaseAppParamManager defines an interface that BaseApp is expected to full-fill, that allows upgrade handlers to modify BaseApp parameters.

type Fork

type Fork struct {
	// Upgrade version name, for the upgrade handler, e.g. `v7`
	UpgradeName string
	// height the upgrade occurs at
	UpgradeHeight int64

	// Function that runs some custom state transition code at the beginning of a fork.
	BeginForkLogic func(ctx sdk.Context, keepers *keepers.AppKeepers)
}

Fork defines a struct containing the requisite fields for a non-software upgrade proposal Hard Fork at a given height to implement. There is one time code that can be added for the start of the Fork, in `BeginForkLogic`. Any other change in the code should be height-gated, if the goal is to have old and new binaries to be compatible prior to the upgrade height.

type Upgrade

type Upgrade struct {
	// Upgrade version name, for the upgrade handler, e.g. `v7`
	UpgradeName string

	// CreateUpgradeHandler defines the function that creates an upgrade handler
	CreateUpgradeHandler func(*module.Manager, module.Configurator, BaseAppParamManager, *keepers.AppKeepers) upgradetypes.UpgradeHandler

	// Store upgrades, should be used for any new modules introduced, new modules deleted, or store names renamed.
	StoreUpgrades store.StoreUpgrades
}

Upgrade defines a struct containing necessary fields that a SoftwareUpgradeProposal must have written, in order for the state migration to go smoothly. An upgrade must implement this struct, and then set it in the app.go. The app.go will then define the handler.

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