package runner import ( "errors" "fmt" "github.com/ethereum/go-ethereum/ethclient" rpchttpclient "github.com/tendermint/tendermint/rpc/client/http" ) var ( ErrChainAlreadyExists = errors.New("chain already exists") ) // ChainDetails wraps information about the properties & endpoints of a chain. type ChainDetails struct { RpcUrl string GrpcUrl string EvmRpcUrl string ChainId string StakingDenom string } // EvmClient dials the underlying EVM RPC url and returns an ethclient. func (c ChainDetails) EvmClient() (*ethclient.Client, error) { return ethclient.Dial(c.EvmRpcUrl) } // RpcConn creates a new connection to the underlying Rpc url. func (c ChainDetails) RpcConn() (*rpchttpclient.HTTP, error) { return rpchttpclient.New(c.RpcUrl, "/websocket") } // Chains wraps a map of name -> details about how to connect to a chain. // It prevents registering multiple chains with the same name & encapsulates // panicking if attempting to access a chain that does not exist. type Chains struct { byName map[string]*ChainDetails } // NewChains creates an empty Chains map. func NewChains() Chains { return Chains{byName: make(map[string]*ChainDetails, 0)} } // MustGetChain returns the chain of a given name, // or panics if a chain with that name has not been registered. func (c Chains) MustGetChain(name string) *ChainDetails { chain, found := c.byName[name] if !found { panic(fmt.Sprintf("no chain with name %s found", name)) } return chain } // Register adds a chain to the map. // It returns an error if a ChainDetails with that name has already been registered. func (c *Chains) Register(name string, chain *ChainDetails) error { if _, found := c.byName[name]; found { return ErrChainAlreadyExists } c.byName[name] = chain return nil } // the Chain details are all hardcoded because they are currently fixed by kvtool. // someday they may be accepted as configurable parameters. var ( kvtoolKavaChain = ChainDetails{ RpcUrl: "http://localhost:26657", GrpcUrl: "http://localhost:9090", EvmRpcUrl: "http://localhost:8545", ChainId: "kavalocalnet_8888-1", StakingDenom: "ukava", } kvtoolIbcChain = ChainDetails{ RpcUrl: "http://localhost:26658", GrpcUrl: "http://localhost:9092", EvmRpcUrl: "http://localhost:8547", ChainId: "kavalocalnet_8889-2", StakingDenom: "uatom", } )