Smart contract

constructor

Params

Name	Type	Required	Description
client	Client	Conditional required	RPC client that will be used to interact with KardiaChain
provider	string	Conditional required	RPC endpoint. Either client or provider must be provided to initialize a smart contract instance
bytecodes	string
abi	object[]

Return

Return a KardiaContract instance.

Methods

updateAbi

Update instance's ABI

Params

Name	Type	Required	Description
abi	object[]	Required	New ABI

Return

None

updateByteCode

Update instance's byte code

Params

Name	Type	Required	Description
bytecodes	string	Required	New byte code

Return

None

info

Get instance's info

Params

None

Return

Instance's info, containing

Name	Type	Description
byteCode	string	Smart contract instance's byte code
abi	object[]	Smart contract instance's ABI

deploy

Create a pre-deploy object that will be used to deploy smart contract to KardiaChain

Params

Name	Type	Required	Description
obj	object	Required	Smart contract's deploy params
obj.gasLimit	number		Gas limit for deploy transaction
obj.gasPrice	number		Gas price for deploy transaction
obj.params	any[]	Required	Smart contract's constructor params

Return

A pre-deploy object containing

Name	Type	Description
txData	Function	Function to get deploy transaction's data
getDefaultTxPayload	Function	Function to get default payload that will be use for deploy transaction
estimateGas	Function	Function to estimate gas for deploy transaction. Can be used with custom payload
send	Function	Function to deploy the smart contract. Check out example here

invokeContract

Invoke a deployed smart contract function.

Params

Name	Type	Required	Description
name	string	Required	Function to invoke's name
params	any[]	Required	Invoke params

Return

A invocation object containing

Name	Type	Description
txData	Function	Function to get deploy transaction's data
getTxObject	Function	Function to get transaction payload that will be use for invoke transaction
estimateGas	Function	Function to estimate gas for deploy transaction. Can be used with custom payload
send	Function	Function to use if the invocation changes smart contract's state. Checkout example here
call	Function	Function to use if the invocation doesn't change smart contract's state. Checkout example here

parseEvent

Parse smart contract's event

Params

Name	Type	Required	Description
txHash	string	Required	Transaction hash to parse events

Return

List of parsed events

This function will use the instance's ABI to parse event.