transaction

type SimpleTxn struct {
	// Ctx is the transaction context
	Ctx *context.Context
	// Nodes are the nodes where the stage and commit functions are performed
	Nodes []string
	// LockKey is the key to be locked
	LockKey string

	// Stage function verifies if the node can perform an operation.
	Stage StepFunc
	// Commit performs the operation on the a node
	Commit StepFunc
	// Store stores the results of an operation. This will only be run on the leader
	Store StepFunc
	// Rollback rollsback any changes done by Commit
	Rollback StepFunc
}

type Step struct {
	DoFunc   StepFunc
	UndoFunc StepFunc
	Nodes    []string
}

type StepFunc func(*context.Context) error

type Txn struct {
	Ctx   *context.Context
	Steps []*Step
	Nodes []string
}