local

IBC Local Contract

This a CosmWasm smart contract that demonstrates the Inter-Blockchain Communication protocol capabilities.

This contract has the following functionality:

• Messages
  • Send a WhoAmI message to a remote chain contract such as ibc-remote
  • Change the admin account of the contract
• Queries
  • Get contract admin
  • Get test information received from remote chain contract on specified channel
  • Get test information received from all remote chain contract on all channels

Build

Compile and optimize the smart contract Wasm.

make && make optimize

Requirements

• provenanced cli

Workflow

See the Overview for end-to-end steps

This contract is intended to be used with the other two projects in the ibc directory:

• ibc-remote
• relayer

To simplify the setup and execution, several scripts are provided in the scripts directory.

1. setup_local_chain.sh

   The setup_local_chain script will start a Provenance chain with 3 funded accounts: validator, localaccount, and relayer. This "local" chain will use the default ports.

2. store_and_init_local_contract.sh

   The store_and_init_local_contract script stores and initializes the "local" smart contract. This step must be performed before starting the relayer

3. execute_contract.sh

   The execute_contract script will send a WhoAmI request to the remote chain contract. The remote contract will respond with data that includes the current block height, timestamp, and chain-id of the remote chain as well as the remote contract's address. It subsequently monitors the current state data of the local contract so that the response can be visualized. It normally requires around 10-12 blocks before the response is received.

IBC Messages

Requests

1. #[cw_serde]
   pub enum PacketMsg {
       WhoAmI {},
   }

Responses

1. #[cw_serde]
   pub struct WhoAmIResponse {
      pub account: String,
      pub block_info: BlockInfo,
   }