giansalex / cw-osmo-price

Contract to query price over IBC (Juno)

IBC query contract

This is a contract to demonstrate osmosis query price over ibc.

Relayer

Create channel

hermes create channel uni testing --port-a wasm.juno1hau40wepfjrvu7z549j3zwz955agv0em7wz8p9nkrwczf84ut0eshp4wxv --port-b gamm -v gamm-1

Contract

ExecuteMsg:

• SpotPrice - this will send GammPrice packet to query spot price in remote osmosis chain and store the info locally

Msg example:

{
  "spot_price": {
    "channel": "channel-13",
    "pool": "2",
    "token_in": "uosmo",
    "token_out": "ibc/0F192F25408BEF0845A4EFF1FB52CF4D390C224D21543F30DE84651745A6F9A2",
    "timeout": 1200
  }
}

• EstimateSwap - this will send EstimateSwapAmountInPacket packet to query "Estimate Swap Exact Amount In"
• and store the info locally

Msg example:

{
  "estimate_swap": {
    "channel": "channel-13",
    "pool": "1",
    "sender": "osmo16vj8qhvhvjptnlre8ke8p37f54z9wy68p7hxf6",
    "amount": "1000000uion",
    "token_out": "uosmo",
    "timeout": 900
  }
}

QueryMsg:

• ListAccounts - to list all accounts tied to open channels. ChannelID, account address on the remote chain (if known) and last updated price.
• Account - queries the above data for one channel

Example: Get last price stored.

{
  "account": {
    "channel_id": "channel-13"
  }
}

Output:

{
  "channel_id": "channel-13",
  "last_update_time": 164145882654434,
  "remote_spot_price": "2.5656456457547"
}