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receiver_parser.go
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receiver_parser.go
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package parser
import (
"fmt"
"strings"
sdk "github.com/cosmos/cosmos-sdk/types"
)
type ParsedReceiver struct {
ShouldForward bool
HostAccAddr sdk.AccAddress
Destination string
Port string
Channel string
}
// ParseReceiverData For now this assumes one hop, should be better parsing
func ParseReceiverData(receiverData string) (*ParsedReceiver, error) {
sep1 := strings.Split(receiverData, ":")
// Standard address
if len(sep1) == 1 && sep1[0] != "" {
return &ParsedReceiver{
ShouldForward: false,
}, nil
}
if len(sep1) < 2 || sep1[len(sep1)-1] == "" {
return nil, fmt.Errorf("unparsable receiver field, need: '{address_on_this_chain}|{portid}/{channelid}:{final_dest_address}', got: '%s'", receiverData)
}
// Final destination is the most right element
dest := strings.Join(sep1[1:], ":")
// Parse transfer fields
sep2 := strings.Split(sep1[0], "|")
if len(sep2) != 2 {
return nil, fmt.Errorf("formatting incorrect, need: '{address_on_this_chain}|{portid}/{channelid}:{final_dest_address}', got: '%s'", receiverData)
}
hostAccAddr, err := sdk.AccAddressFromBech32(sep2[0])
if err != nil {
return nil, err
}
sep3 := strings.Split(sep2[1], "/")
if len(sep3) != 2 {
return nil, fmt.Errorf("formatting incorrect, need: '{address_on_this_chain}|{portid}/{channelid}:{final_dest_address}', got: '%s'", receiverData)
}
port := sep3[0]
channel := sep3[1]
return &ParsedReceiver{
ShouldForward: true,
HostAccAddr: hostAccAddr,
Destination: dest,
Port: port,
Channel: channel,
}, nil
}
// sending chain receiver field
// cosmos16plylpsgxechajltx9yeseqexzdzut9g8vla4k|transfer/channel-0:cosmos16plylpsgxechajltx9yeseqexzdzut9g8vla4k|transfer/channel-0: cosmos16plylpsgxechajltx9yeseqexzdzut9g8vla4k|transfer/channel-0:cosmos16plylpsgxechajltx9yeseqexzdzut9g8vla4k
// first proxy chain receiver field
// cosmos16plylpsgxechajltx9yeseqexzdzut9g8vla4k|transfer/channel-0:cosmos16plylpsgxechajltx9yeseqexzdzut9g8vla4k|transfer/channel-0:cosmos16plylpsgxechajltx9yeseqexzdzut9g8vla4k
// second proxy chain receiver field
// somm16plylpsgxechajltx9yeseqexzdzut9g8vla4k|transfer/channel-0:cosmos16plylpsgxechajltx9yeseqexzdzut9g8vla4k
// final proxy chain receiver field
// cosmos16plylpsgxechajltx9yeseqexzdzut9g8vla4k