Core SDK

Golang SDK for Tendermint & Cosmos-SDK Core Modules

install

Requirement

Go version above 1.16.4

Use Go Mod

replace (
    github.com/gogo/protobuf => github.com/regen-network/protobuf v1.3.2-alpha.regen.4
    github.com/tendermint/tendermint => github.com/bianjieai/tendermint v0.34.1-irita-210113
)

Init Client

The initialization SDK code is as follows:

    bech32AddressPrefix := types.AddrPrefixCfg{
        AccountAddr:   "iaa",
        ValidatorAddr: "iva",
        ConsensusAddr: "ica",
        AccountPub:    "iap",
        ValidatorPub:  "ivp",
        ConsensusPub:  "icp",
    }
    options := []types.Option{
        types.KeyDAOOption(store.NewMemory(nil)),
        types.TimeoutOption(10),
        types.TokenManagerOption(TokenManager{}),
        types.KeyManagerOption(crypto.NewKeyManager()),
        types.Bech32AddressPrefixOption(bech32AddressPrefix),
        types.BIP44PathOption(""),
    }
    cfg, err := types.NewClientConfig(nodeURI, grpcAddr, chainID, options...)
    if err != nil {
        panic(err)
    }
    
    s.Client = sdk.NewClient(cfg)

The NewClientConfig component mainly contains the parameters used in the SDK, the specific meaning is shown in the table below.

If you want to use SDK to send a transfer transaction, the example is as follows:

There is more example of query and send tx

    coins, err := types.ParseDecCoins("10iris")
    to := "iaa1hp29kuh22vpjjlnctmyml5s75evsnsd8r4x0mm"
    baseTx := types.BaseTx{
        From:               s.Account().Name,
        Gas:                200000,
        Memo:               "TEST",
        Mode:               types.Commit,
        Password:          "password",
        SimulateAndExecute: false,
        GasAdjustment:      1.5,
    }
    
    res, err := s.Bank.Send(to, coins, baseTx)