IBC Hello World

curl https://get.starport.network/starport@v0.15.0! | bash

starport app github.com/user/planet
cd planet

starport module create blog --ibc

starport type post title content --module blog
starport type sentPost postID title chain --module blog
starport type timedoutPost title chain --module blog

starport packet ibcPost title content --ack postID --module blog

planetd tx blog send-ibcPost [portID] [channelD] [title] [content]

// planet/proto/blog/packet.proto
// this line is used by starport scaffolding # ibc/packet/proto/message
// IbcPostPacketData defines a struct for the packet payload
message IbcPostPacketData {
    string title = 1;
    string content = 2;
    string creator = 3; // < --- 게시물 작성자 필드 추가
}

// planet/x/blog/keeper/msg_server_ibcPost.go
// Construct the packet
    var packet types.IbcPostPacketData

    packet.Title = msg.Title
    packet.Content = msg.Content
    packet.Creator = msg.Sender // < --- 메시지 서명자를 보낸 사람으로 지정

    // Transmit the packet
    err := k.TransmitIbcPostPacket(
        ctx,
        packet,
        msg.Port,
        msg.ChannelID,
        clienttypes.ZeroHeight(),
        msg.TimeoutTimestamp,
    )

// planet/x/blog/keeper/ibcPost.go
// OnRecvIbcPostPacket processes packet reception
func (k Keeper) OnRecvIbcPostPacket(ctx sdk.Context, packet channeltypes.Packet, data types.IbcPostPacketData) (packetAck types.IbcPostPacketAck, err error) {
    // 수신 시 패킷 데이터 확인
    if err := data.ValidateBasic(); err != nil {
        return packetAck, err
    }

    id := k.AppendPost(
        ctx,
        packet.SourcePort+"-"+packet.SourceChannel+"-"+data.Creator,
        data.Title,
        data.Content,
    )
    packetAck.PostID = strconv.FormatUint(id, 10)

    return packetAck, nil
}

// OnAcknowledgementIbcPostPacket : 수신 블록체인에서 수신된 패킷을 확인 (성공 또는 실패 응답)
func (k Keeper) OnAcknowledgementIbcPostPacket(ctx sdk.Context, packet channeltypes.Packet, data types.IbcPostPacketData, ack channeltypes.Acknowledgement) error {
    switch dispatchedAck := ack.Response.(type) {
    case *channeltypes.Acknowledgement_Error:
        // 이 튜토리얼에서는 승인 오류는 처리하지 않음
        return nil
    case *channeltypes.Acknowledgement_Result:
        // 승인된 패킷 디코드
        var packetAck types.IbcPostPacketAck
        err := packetAck.Unmarshal(dispatchedAck.Result)
        if err != nil {
            // 송신 모듈이 전송한 패킷이 올바른 형식이 아님
            return errors.New("cannot unmarshal acknowledgment")
        }

        k.AppendSentPost(
            ctx,
            data.Creator,
            packetAck.PostID,
            data.Title,
            packet.DestinationPort+"-"+packet.DestinationChannel,
        )

        return nil
    default:
        // 송신 모듈이 전송한 패킷이 올바른 형식이 아님
        return errors.New("invalid acknowledgment format")
    }
}

// OnTimeoutIbcPostPacket: timeout으로 인해 패킷이 전송되지 않은 경우 응답
func (k Keeper) OnTimeoutIbcPostPacket(ctx sdk.Context, packet channeltypes.Packet, data types.IbcPostPacketData) error {

    k.AppendTimedoutPost(
        ctx,
        data.Creator,
        data.Title,
        packet.DestinationPort+"-"+packet.DestinationChannel,
    )

    return nil
}

accounts:
  - name: alice
    coins: ["1000token", "100000000stake"]
  - name: bob
    coins: ["500token"]
validator:
  name: alice
  staked: "100000000stake"
faucet:
  name: bob
  coins: ["5token"]
genesis:
  chain_id: "earth"
init:
  home: "$HOME/.earth"

accounts:
  - name: alice
    coins: ["1000token", "1000000000stake"]
  - name: bob
    coins: ["500token"]
validator:
  name: alice
  staked: "100000000stake"
faucet:
  host: ":4501"
  name: bob
  coins:
    - "5token"
host:
  rpc: ":26659"
  p2p: ":26658"
  prof: ":6061"
  grpc: ":9091"
  api: ":1318"
  frontend: ":8081"
  dev-ui: ":12346"
genesis:
  chain_id: "mars"
init:
  home: "$HOME/.mars"

starport serve -c earth.yml

starport serve -c mars.yml

starport relayer configure --advanced --source-rpc "http://0.0.0.0:26657" --source-faucet "http://0.0.0.0:4500" --source-port "blog" --source-version "blog-1" --target-rpc "http://0.0.0.0:26659" --target-faucet "http://0.0.0.0:4501" --target-port "blog" --target-version "blog-1"

---------------------------------------------
Setting up chains
---------------------------------------------

🔐  Account on "source" is "cosmos1xcxgzq75yrxzd0tu2kwmwajv7j550dkj7m00za"

 |· received coins from a faucet
 |· (balance: 5token)

🔐  Account on "target" is "cosmos1nxg8e4mfp5v7sea6ez23a65rvy0j59kayqr8cx"

 |· received coins from a faucet
 |· (balance: 5token)

⛓  Configured chains: earth-mars

starport relayer connect

🔌  Linked chains with 1 paths.

---------------------------------------------
Chains by paths
---------------------------------------------

earth-mars:
    earth > (port: blog) (channel: channel-0)
    mars  > (port: blog) (channel: channel-0)

---------------------------------------------
Listening and relaying packets between chains...
---------------------------------------------

planetd tx blog send-ibcPost blog channel-0 "Hello" "Hello Mars, I'm Alice from Earth" --from alice --chain-id earth --home ~/.earth

planetd q blog list-post --node tcp://localhost:26659

Post:
  - content: Hello Mars, I'm Alice from Earth
    creator: blog-channel-0-cosmos1aew8dk9cs3uzzgeldatgzvm5ca2k4m98xhy20x
    id: "0"
    title: Hello
pagination:
  next_key: null
  total: "1"

planetd q blog list-sentPost

SentPost:
  - chain: blog-channel-0
    creator: cosmos1aew8dk9cs3uzzgeldatgzvm5ca2k4m98xhy20x
    id: "0"
    postID: "0"
    title: Hello
pagination:
  next_key: null
  total: "1"

planetd tx blog send-ibcPost blog channel-0 "Sorry" "Sorry Mars, you will never see this post" --from alice --chain-id earth --home ~/.earth --packet-timeout-timestamp 1

planetd q blog list-timedoutPost

TimedoutPost:
  - chain: blog-channel-0
    creator: cosmos1fhpcsxn0g8uask73xpcgwxlfxtuunn3ey5ptjv
    id: "0"
    title: Sorry
pagination:
  next_key: null
  total: "2"

planetd tx blog send-ibcPost blog channel-0 "Hello" "Hello Earth, I'm Alice from Mars" --from alice --chain-id mars --home ~/.mars --node tcp://localhost:26659

planetd q blog list-post

Post:
  - content: Hello Earth, I'm Alice from Mars
    creator: blog-channel-0-cosmos1xtpx43l826348s59au24p22pxg6q248638q2tf
    id: "0"
    title: Hello
pagination:
  next_key: null
  total: "1"