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router.go
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router.go
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package types
import (
"fmt"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
)
type Router struct {
routes map[string]TransactionHook
sealed bool
}
func NewRouter() *Router {
return &Router{
routes: make(map[string]TransactionHook),
}
}
// Seal prevents the Router from any subsequent route handlers to be registered.
// Seal will panic if called more than once.
func (rtr *Router) Seal() {
if rtr.sealed {
panic("router already sealed")
}
rtr.sealed = true
}
// Sealed returns a boolean signifying if the Router is sealed or not.
func (rtr Router) Sealed() bool {
return rtr.sealed
}
// AddRoute adds IBCModule for a given module name. It returns the Router
// so AddRoute calls can be linked. It will panic if the Router is sealed.
func (rtr *Router) AddRoute(module string, hook TransactionHook) *Router {
if rtr.sealed {
panic(fmt.Sprintf("router sealed; cannot register %s route callbacks", module))
}
if !sdk.IsAlphaNumeric(module) {
panic("route expressions can only contain alphanumeric characters")
}
if rtr.HasRoute(module) {
panic(fmt.Sprintf("route %s has already been registered", module))
}
rtr.routes[module] = hook
return rtr
}
// HasRoute returns true if the Router has a module registered or false otherwise.
func (rtr *Router) HasRoute(module string) bool {
_, ok := rtr.routes[module]
return ok
}
// GetRoute returns a IBCModule for a given module.
func (rtr *Router) GetRoute(module string) (TransactionHook, bool) {
if !rtr.HasRoute(module) {
return nil, false
}
return rtr.routes[module], true
}
// RefundHook IBC transfer refund hook
var _ RefundHook = MultiRefundHook{}
// MultiRefundHook multi-refund hook
type MultiRefundHook []RefundHook
func (mrh MultiRefundHook) RefundAfter(ctx sdk.Context, sourcePort, sourceChannel string,
sequence uint64, sender sdk.AccAddress, receiver string, amount sdk.Coin) error {
for i := range mrh {
if err := mrh[i].RefundAfter(ctx, sourcePort, sourceChannel, sequence, sender, receiver, amount); err != nil {
return sdkerrors.Wrapf(err, "Refund hook %T failed, error %s", mrh[i], err.Error())
}
}
return nil
}