Add docs

docs/band_price_source.md

@@ -0,0 +1,80 @@
+# Integrate mesh security using band oracle price source.
+
+## Prerequisites
+
+- Setup mesh-security consumer and provider chains as [integration_consumer](./integration_consumer.md), [integration_provider](./integration_provider.md)
+- Choose a price source for 2 chains in [band laozi testnet](https://laozi-testnet6.cosmoscan.io/data-sources), [band mainnet](https://www.cosmoscan.io/data-sources)
+
+You can request 4 symbols on [oracle script id: 360](https://laozi-testnet6.cosmoscan.io/oracle-script/360)
+
+- BTC, ETH, USDT, BAND
+
+## Band Price Feeder
+
+Band oracle price feeder is design base on cw-band. More details could be found in: <https://github.com/bandprotocol/cw-band/tree/main/docs>
+
+The contract needs some information to instantiate, which is:
+
+```
+trading_pair: {
+    base_asset: String,
+    quote_asset: String,
+} -> Consumer chain denom is base_asset, provider chain denom is quote_asset 
+client_id: String -> Arbitary string for your request
+oracle_script_id: Uint64, -> The data source's id you choose 
+ask_count: Uint64, -> The number of validator you want to ask (Recommend: 4 on testnet)
+min_count: Uint64, -> The minimum number of validator need to answer to aggregate result (Recommend: 3 on testnet)
+fee_limit: Vec<Coin>, -> Data source fee that you willing to pay (Recommend: 250000uband, which is [{"denom": "uband", "amount":"250000"}])
+prepare_gas: Uint64, -> Gas for running prepare phrase (Recommend: 100000)
+execute_gas: Uint64, -> Gas for running execute phrase (Recommend: 500000)
+minimum_sources: u8, -> The minimum available sources to determine price is aggregated from at least minimum sources (for data integrity) 1 should be ok for testing
+price_info_ttl_in_secs: u64, -> The price only can live in an amount of time, after that, they should be update (Recommend: 60) 
+```
+
+## Configure relayer
+
+1. Create config for consumer chain and band chain as usual.
+2. Create path, clients, connections
+3. Deploy band price feeder on consumer chain
+4. Setup channel using port wasm on consumer chain, port oracle on band chain and version bandchain-1
+5. Using contract address as price source in converter contract
+Deploy contract:
+
+```bash
+meshconsumerd tx wasm store ./tests/testdata/mesh_band_price_feed.wasm.gz --node $node --from $wallet --home=$home  --chain-id $chainid --keyring-backend test --gas 300000 -y
+
+band_code_id=$(meshconsumerd q wasm  list-code --node $node --output json | jq -r '.code_infos[-1].code_id')
+client_id=$(yq e '.paths.{$PATH_NAME}.src.client-id' $relayer_home/config/config.yaml)
+oracle_script_id=445
+
+init_band_price_feed=$(cat <<EOF
+{
+    "trading_pair": {
+        "base_asset": "OSMO",
+        "quote_asset": "ATOM"
+    },
+    "client_id": "$client_id",
+    "oracle_script_id": "$oracle_script_id",
+    "ask_count": "1",
+    "min_count": "1",
+    "fee_limit": [{"denom": "uband", "amount":"10000"}],
+    "prepare_gas": "40000",
+    "execute_gas": "300000",
+    "minimum_sources": 2,
+    "price_info_ttl_in_secs": 60
+}
+EOF
+)
+meshconsumerd tx wasm instantiate $band_code_id "$init_band_price_feed" --node $node --label contract-pricefeed  --admin $wallet --from $wallet --home=$home  --chain-id $chainid --keyring-backend test -y --gas 300000
+sleep 7
+
+price_feed=$(meshconsumerd q wasm list-contract-by-code $band_code_id --node $node --output json | jq -r '.contracts[0]' )
+echo "price feed contract: $price_feed"
+
+```
+
+Create channel
+
+```bash
+rly tx channel {$PATH_NAME} --src-port wasm.$price_feed --dst-port oracle --order unordered --version bandchain-1 --home $relayer_home --override
+```

scripts/mesh/testibc/config_band.yaml

@@ -35,7 +35,7 @@ chains:
             key-directory: scripts/relayer/keys/band-laozi-testnet6
             key: testnet
             chain-id: band-laozi-testnet6
-            rpc-addr: https://rpc.laozi-testnet6.bandchain.org
+            rpc-addr: https://rpc.laozi-testnet6.bandchain.org:443
             account-prefix: band
             keyring-backend: test
             gas-adjustment: 1.2
@@ -48,7 +48,7 @@ chains:
             output-format: json
             sign-mode: direct
             extra-codecs: []
-            coin-type: 118
+            coin-type: 494
             signing-algorithm: ""
             broadcast-mode: batch
             min-loop-duration: 0s