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addresses.go
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addresses.go
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// (c) 2019-2020, Ava Labs, Inc. All rights reserved.
// See the file LICENSE for licensing terms.
package avax
import (
"fmt"
"github.com/ava-labs/avalanchego/ids"
"github.com/ava-labs/avalanchego/snow"
"github.com/ava-labs/avalanchego/utils/constants"
"github.com/ava-labs/avalanchego/utils/formatting"
)
var _ AddressManager = &addressManager{}
type AddressManager interface {
// ParseLocalAddress takes in an address for this chain and produces the ID
ParseLocalAddress(addrStr string) (ids.ShortID, error)
// ParseAddress takes in an address and produces the ID of the chain it's
// for and the ID of the address
ParseAddress(addrStr string) (ids.ID, ids.ShortID, error)
// FormatLocalAddress takes in a raw address and produces the formatted
// address for this chain
FormatLocalAddress(addr ids.ShortID) (string, error)
// FormatAddress takes in a chainID and a raw address and produces the
// formatted address for that chain
FormatAddress(chainID ids.ID, addr ids.ShortID) (string, error)
}
type addressManager struct {
ctx *snow.Context
}
func NewAddressManager(ctx *snow.Context) AddressManager {
return &addressManager{
ctx: ctx,
}
}
func (a *addressManager) ParseLocalAddress(addrStr string) (ids.ShortID, error) {
chainID, addr, err := a.ParseAddress(addrStr)
if err != nil {
return ids.ShortID{}, err
}
if chainID != a.ctx.ChainID {
return ids.ShortID{}, fmt.Errorf(
"expected chainID to be %q but was %q",
a.ctx.ChainID,
chainID,
)
}
return addr, nil
}
func (a *addressManager) ParseAddress(addrStr string) (ids.ID, ids.ShortID, error) {
chainIDAlias, hrp, addrBytes, err := formatting.ParseAddress(addrStr)
if err != nil {
return ids.ID{}, ids.ShortID{}, err
}
chainID, err := a.ctx.BCLookup.Lookup(chainIDAlias)
if err != nil {
return ids.ID{}, ids.ShortID{}, err
}
expectedHRP := constants.GetHRP(a.ctx.NetworkID)
if hrp != expectedHRP {
return ids.ID{}, ids.ShortID{}, fmt.Errorf(
"expected hrp %q but got %q",
expectedHRP,
hrp,
)
}
addr, err := ids.ToShortID(addrBytes)
if err != nil {
return ids.ID{}, ids.ShortID{}, err
}
return chainID, addr, nil
}
func (a *addressManager) FormatLocalAddress(addr ids.ShortID) (string, error) {
return a.FormatAddress(a.ctx.ChainID, addr)
}
func (a *addressManager) FormatAddress(chainID ids.ID, addr ids.ShortID) (string, error) {
chainIDAlias, err := a.ctx.BCLookup.PrimaryAlias(chainID)
if err != nil {
return "", err
}
hrp := constants.GetHRP(a.ctx.NetworkID)
return formatting.FormatAddress(chainIDAlias, hrp, addr.Bytes())
}