Ryosuke Kosako
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    # CosmWasmをStarportで作ったCosmosチェーンにのせる https://www.notion.so/Smart-contracts-with-CosmWasm-c6fbcd584b78437a843e738b922dc108 https://docs.starport.network/extra/cosmwasm.html ## チェーンの初期化 starport scaffold chain github.com/example/contracts ## wasmモジュールを入れる ``` cd contracts starport scaffold wasm ``` チェーンを立ち上げる ``` starport chain serve ``` ここで出てくるaliceとbobのmnemonicをメモしておく。 ``` Cosmos SDK's version is: Stargate v0.40.0 (or later) 🛠️ Building proto... 📦 Installing dependencies... 🛠️ Building the blockchain... 💿 Initializing the app... 🙂 Created account "alice" with address "cosmos1arqrmevza6vvl898es5qegh9g2wf0a97apc3jy" with mnemonic: "luxury resist club rude digital remove pluck dust coast tent flavor easy reason dentist glide proof minute tomorrow typical enhance silk victory ski enhance" 🙂 Created account "bob" with address "cosmos1w90xm9kcghtj6jzn6tr8le78ml97np3j7qyn92" with mnemonic: "small drop obtain alcohol math siren nominee balcony face owner dune omit wine lens orient mistake smooth defense speed rigid flash census slogan wife" Genesis transaction written to "/Users/kosamit/.contracts/config/gentx/gentx-b7419f23a8c8fb6e2fe8f02efa12c79bce3ca34e.json" 🌍 Tendermint node: http://0.0.0.0:26657 🌍 Blockchain API: http://0.0.0.0:1317 🌍 Token faucet: http://0.0.0.0:4500 ``` これで ``` contractsd tx wasm ``` が使えるようになる。 ``` Available Commands: clear-contract-admin Clears admin for a contract to prevent further migrations execute Execute a command on a wasm contract instantiate Instantiate a wasm contract migrate Migrate a wasm contract to a new code version set-contract-admin Set new admin for a contract store Upload a wasm binary ``` ## CosmWasmのデプロイ CosmosでCosmWasmを動かすには以下の手順が必要となる。 1. CosmWasmでスマコン作成 2. ビルドしてwasmを生成 3. wasmをCosmos上にアップロード 4. Cosmos上のwasmをインスタンス化 今回は1をサンプルを使って省略する。 ### ビルドしてwasmを生成 Rustをインストールする。(説明省略) #### cargo-generateのインストール ``` cargo install cargo-generate --features vendored-openssl ``` cargo generateコマンドを使えるようになる Rustのプロジェクトを簡単に始められるツール。 #### サンプルを使う カウンターのサンプルをcloneする。 スマコン用のフォルダを別で作って管理した方がいいので、contractsのフォルダから抜けて、スマコン用のフォルダを作ってその中にクローンする。 ``` cd .. mkdir smartcontracts cd smartcontracts cargo generate --git https://github.com/CosmWasm/cosmwasm-template.git --branch 0.14 --name counter ``` #### ビルドする ``` cd counter rustup target add wasm32-unknown-unknown cargo wasm docker run --rm -v "$(pwd)":/code \ --mount type=volume,source="$(basename "$(pwd)")_cache",target=/code/target \ --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \ cosmwasm/rust-optimizer:0.11.4 ``` これでcounter/artifactsにcounter.wasmができる。 ### wasmをCosmos上にアップロード counter.wasmをcontracts/artifactsに移動し、以下を実行しする。 (starport chain serveでチェーンは動かしておく。) ``` contractsd tx wasm store artifacts/counter.wasm --from alice --gas 1000000 ``` これでチェーン上にアップできた。 以下でスマコンを確認できる。 ``` contractsd q wasm list-code ``` ### Cosmos上のwasmをインスタンス化 この段階ではまだスマコンを実行できない。 アップしたスマコンのインスタンスを作成する必要がある。 contractsd tx wasm instantiateでインスタンスを作成できる。 ``` contractsd tx wasm instantiate 1 '{"count": 5}' --from alice --label mycounter --gas 1000000 ``` instantiateの引数の1はcontractsd q wasm list-codeで確認できるcode_idである。 以下で作成されたインスタンスを確認できる。 ``` contractsd q wasm list-contract-by-code 1 ``` ```結果 contracts: - cosmos18vd8fpwxzck93qlwghaj6arh4p7c5n89uzcee5 pagination: next_key: null total: "0" ``` ## スマコンのステートの確認 以下で確認できる。 ``` contractsd q wasm contract-state all cosmos18vd8fpwxzck93qlwghaj6arh4p7c5n89uzcee5 ``` valueはbase64でエンコードされている。 ```結果 models: - key: "7374617465" value: eyJjb3VudCI6NSwib3duZXIiOiJjb3Ntb3MxYXJxcm1ldnphNnZ2bDg5OGVzNXFlZ2g5ZzJ3ZjBhOTdhcGMzankifQ== pagination: next_key: null total: "0" ``` デコードして内容を見ると、countが5であることが分かる。 ``` $ echo eyJjb3VudCI6NSwib3duZXIiOiJjb3Ntb3MxYXJxcm1ldnphNnZ2bDg5OGVzNXFlZ2g5ZzJ3ZjBhOTdhcGMzankifQ== | base64 --decode {"count":5,"owner":"cosmos1arqrmevza6vvl898es5qegh9g2wf0a97apc3jy"} ``` ## スマコンの実行 contractsd tx wasm executeで実行できる。 ``` contractsd tx wasm execute cosmos18vd8fpwxzck93qlwghaj6arh4p7c5n89uzcee5 '{"increment": {}}' --from alice --gas 1000000 ``` 結果を確認する。 ``` $ contractsd q wasm contract-state all cosmos18vd8fpwxzck93qlwghaj6arh4p7c5n89uzcee5 models: - key: "7374617465" value: eyJjb3VudCI6Niwib3duZXIiOiJjb3Ntb3MxYXJxcm1ldnphNnZ2bDg5OGVzNXFlZ2g5ZzJ3ZjBhOTdhcGMzankifQ== pagination: next_key: null total: "0" $ echo eyJjb3VudCI6Niwib3duZXIiOiJjb3Ntb3MxYXJxcm1ldnphNnZ2bDg5OGVzNXFlZ2g5ZzJ3ZjBhOTdhcGMzankifQ== | base64 --decode {"count":6,"owner":"cosmos1arqrmevza6vvl898es5qegh9g2wf0a97apc3jy"} ```

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