org.exoplatform.addon.ethereum.wallet.service

Class EthereumClientConnector

java.lang.Object

org.exoplatform.addon.ethereum.wallet.service.EthereumClientConnector

All Implemented Interfaces:

org.picocontainer.Startable

public class EthereumClientConnector
extends Object
implements org.picocontainer.Startable

A Web3j connector class to interact with Ethereum Blockchain

Constructor Summary

Constructors

Constructor and Description
EthereumClientConnector(EthereumWalletService ethereumWalletService, org.exoplatform.container.ExoContainer container)

Method Summary

Modifier and Type	Method and Description
void	changeSettings(GlobalSettings newGlobalSettings) Change currently used globalSettings and re-init
org.web3j.protocol.core.methods.response.EthBlock.Block	getBlock(String blockHash) Get block by hash
protected String	getConnectionFailedMessage()
int	getConnectionInterruptionCount()
long	getLastBlockNumberOnStartupTime()
long	getLastWatchedBlockNumber()
org.web3j.protocol.core.methods.response.Transaction	getTransaction(String transactionHash) Get transaction by hash
int	getTransactionQueueMaxSize()
int	getTransactionQueueSize()
org.web3j.protocol.core.methods.response.TransactionReceipt	getTransactionReceipt(String transactionHash) Get transaction receipt by hash
int	getTransactionsCountPerBlock()
int	getWatchedTransactionCount()
long	getWatchingBlockchainStartTime()
String	getWebsocketProviderURL() Returns used Websocket URL
boolean	isConnected()
void	setLastWatchedBlockNumber(long lastWatchedBlockNumber)
void	start()
void	startListeninigToTransactions() Add subscription on Ethereum network to listen on all new transactions
void	stop()
void	stopListeninigToTransactions() Unsubscribe from Ethereum network transaction events

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

EthereumClientConnector

public EthereumClientConnector(EthereumWalletService ethereumWalletService,
                               org.exoplatform.container.ExoContainer container)

Method Detail

start

public void start()

Specified by:

start in interface org.picocontainer.Startable

stop

public void stop()

Specified by:

stop in interface org.picocontainer.Startable

startListeninigToTransactions

public void startListeninigToTransactions()

Add subscription on Ethereum network to listen on all new transactions

stopListeninigToTransactions

public void stopListeninigToTransactions()

Unsubscribe from Ethereum network transaction events

getTransaction

public org.web3j.protocol.core.methods.response.Transaction getTransaction(String transactionHash)
                                                                    throws InterruptedException

Get transaction by hash

Parameters:

transactionHash - transaction hash to retrieve

Returns:

Web3j Transaction object

Throws:

InterruptedException - when Blockchain request is interrupted

getBlock

public org.web3j.protocol.core.methods.response.EthBlock.Block getBlock(String blockHash)
                                                                 throws InterruptedException

Get block by hash

Parameters:

blockHash - block hash to retrieve

Returns:

Web3j Block object

Throws:

InterruptedException - when Blockchain request is interrupted

getTransactionReceipt

public org.web3j.protocol.core.methods.response.TransactionReceipt getTransactionReceipt(String transactionHash)
                                                                                  throws InterruptedException

Get transaction receipt by hash

Parameters:

transactionHash - transaction hash to retrieve

Returns:

Web3j Transaction receipt object

Throws:

InterruptedException - when Blockchain request is interrupted

getWebsocketProviderURL

public String getWebsocketProviderURL()

Returns used Websocket URL

Returns:

blockchain web socket endpoint URL

changeSettings

public void changeSettings(GlobalSettings newGlobalSettings)

Change currently used globalSettings and re-init

Parameters:

newGlobalSettings - newly saved global settings

isConnected

public boolean isConnected()

Returns:

true if the connection to the blockchain is established

getLastWatchedBlockNumber

public long getLastWatchedBlockNumber()

Returns:

last wtahced block number

getConnectionInterruptionCount

public int getConnectionInterruptionCount()

Returns:

number of blockchain connection interruption

setLastWatchedBlockNumber

public void setLastWatchedBlockNumber(long lastWatchedBlockNumber)

Parameters:

lastWatchedBlockNumber - last watched block number

getTransactionQueueSize

public int getTransactionQueueSize()

Returns:

transaction queue currently processing size

getWatchingBlockchainStartTime

public long getWatchingBlockchainStartTime()

Returns:

timestamp in milliseconds of blockchaing watching start time

getWatchedTransactionCount

public int getWatchedTransactionCount()

Returns:

number of treated watched transactions count

getTransactionQueueMaxSize

public int getTransactionQueueMaxSize()

Returns:

max treating transactions queue size

getLastBlockNumberOnStartupTime

public long getLastBlockNumberOnStartupTime()

Returns:

block number on blockchain in stratup time

getTransactionsCountPerBlock

public int getTransactionsCountPerBlock()

Returns:

estimation of transactions count per block

getConnectionFailedMessage

protected String getConnectionFailedMessage()