OpalcoinClient

OpalcoinClient is a gem that makes it easy to work with opalcoin in ruby.

Dependencies

The only requirement is a running opalcoin daemon (opalcoind). Make sure to check out the doc section and follow the instructions for your os. NOTICE: by default opalcoind will only allow local connections.

Installation

Add this line to your application's Gemfile:

gem 'opalcoin_client'

Or install it yourself as:

$ gem install opalcoin_client

Configuration

If you're using rails you can create an initializer. Here are the default settings:

# config/initializers/opalcoin_client.rb
OpalcoinClient.configure do |config|
    config.host = 'localhost'
    config.port = 51990
    config.protocol = :http
    config.user = ''
    config.password = ''
end

You can also pass config variables as an options hash when creating a new client:

client = OpalcoinClient.new(user: 'my_opalcoind_username', password: 'my_super_secure_password')

Example Usage

# create a new instance of the client
client = OpalcoinClient.new

# check that opalcoind is running and that our credentials are correct
if client.valid?
    # get a new wallet address
    new_wallet_addr = client.get_new_address

    # get the balance of our new wallet
    my_balance = client.get_balance(new_wallet_addr)
    puts "I have #{my_balance} opal!"
else
    puts 'Something is wrong...'
end

Available Methods

Method	Params	Description	unlckd wallet req?
add_multi_sig_address	[nrequired] ["key","key"] [account]	Currently only available on testnet Add a nrequired-to-sign multisignature address to the wallet. Each key is a opalcoin address or hex-encoded public key. If [account] is specified, assign address to [account].	No
backup_wallet	[destination]	Safely copies wallet.dat to destination, which can be a directory or a path with filename.	No
dump_priv_key	[opalcoinaddress]	Reveals the private key corresponding to	Yes
encrypt_wallet	[passphrase]	Encrypts the wallet with	No
get_account	[opalcoinaddress]	Returns the account associated with the given address.	No
get_account_address	[account]	Returns the current opalcoin address for receiving payments to this account.	No
get_addresses_by_account	[account]	Returns the list of addresses for the given account.	No
get_balance	[account] [minconf=1]	If [account] is not specified, returns the server's total available balance. If [account] is specified, returns the balance in the account.	No
get_block	[hash]	Returns information about the given block hash.	No
get_block_count		Returns the number of blocks in the longest block chain.	No
get_block_hash	[index]	Returns hash of block in best-block-chain at	No
get_block_number		Deprecated. Use getblockcount.	No
get_connection_count		Returns the number of connections to other nodes.	No
get_difficulty		Returns the proof-of-work difficulty as a multiple of the minimum difficulty.	No
get_generate		Returns true or false whether opalcoind is currently generating hashes	No
get_hashes_per_sec		Returns a recent hashes per second performance measurement while generating.	No
get_info		Returns an object containing various state info.	No
get_memory_pool	[data]	If [data] is not specified, returns data needed to construct a block to work on: "version": block version "previousblockhash": hash of current highest block "transactions": contents of non-coinbase transactions that should be included in the next block "coinbasevalue": maximum allowable input to coinbase transaction, including the generation award and transaction fees "time": timestamp appropriate for next block "bits": compressed target of next block If [data] is specified, tries to solve the block and returns true if it was successful.	No
get_mining_info		Returns an object containing mining-related information: blocks currentblocksize currentblocktx difficulty errors generate genproclimit hashespersec pooledtx testnet	No
get_new_address	[account]	Returns a new opalcoin address for receiving payments. If [account] is specified (recommended), it is added to the address book so payments received with the address will be credited to [account].	No
get_received_by_account	[account] [minconf=1]	Returns the total amount received by addresses with [account] in transactions with at least [minconf] confirmations. If [account] not provided return will include all transactions to all accounts. (version 0.3.24-beta)	No
get_received_by_address	[opalcoinaddress] [minconf=1]	Returns the total amount received by	No
get_transaction	[txid]	Returns an object about the given transaction containing: "amount": total amount of the transaction "confirmations": number of confirmations of the transaction "txid": the transaction ID "time": time the transaction occurred "details" - An array of objects containing: "account" "address" "category" "amount"	No
get_work	[data]	If [data] is not specified, returns formatted hash data to work on: "midstate": precomputed hash state after hashing the first half of the data "data": block data "hash1": formatted hash buffer for second hash "target": little endian hash target If [data] is specified, tries to solve the block and returns true if it was successful.	No
help	[command]	List commands, or get help for a command.	No
import_priv_key	[opalcoinprivkey] [label]	Adds a private key (as returned by dumpprivkey) to your wallet.	Yes
key_pool_refill		Fills the keypool, requires wallet passphrase to be set.	Yes
list_accounts	[minconf=1]	Returns Object that has account names as keys, account balances as values.	No
list_received_by_account	[minconf=1] [includeempty=false]	Returns an array of objects containing: "account": the account of the receiving addresses "amount": total amount received by addresses with this account "confirmations": number of confirmations of the most recent transaction included	No
list_received_by_address	[minconf=1] [includeempty=false]	Returns an array of objects containing: "address": receiving address "account": the account of the receiving address "amount": total amount received by the address "confirmations": number of confirmations of the most recent transaction included To get a list of accounts on the system, execute opalcoind listreceivedbyaddress 0 true	No
list_since_block	[blockhash] [target-confirmations]	Get all transactions in blocks since block [blockhash], or all transactions if omitted.	No
list_transactions	[account] [count=10] [from=0]	Returns up to [count] most recent transactions skipping the first [from] transactions for account [account]. If [account] not provided will return recent transaction from all accounts.	No
move	[fromaccount] [toaccount] [amount] [minconf=1] [comment]	Move from one account in your wallet to another	No
send_from	[fromaccount] [toopalcoinaddress] [amount] [minconf=1] [comment] [comment-to]		Yes
send_many	[fromaccount] [address:amount,...] [minconf=1] [comment]	amounts are double-precision floating point numbers	Yes
send_to_address	[opalcoinaddress] [amount] [comment] [comment-to]		Yes
set_account	[opalcoinaddress] [account]	Sets the account associated with the given address. Assigning address that is already assigned to the same account will create a new address associated with that account.	No
set_generate	[generate] [genproclimit]	[generate] is true or false to turn generation on or off. Generation is limited to [genproclimit] processors, -1 is unlimited.	No
sign_message	[opalcoinaddress] [message]	Sign a message with the private key of an address.	Yes
set_tx_fee	[amount]	[amount] is a real and is rounded to the nearest 0.00000001	No
stop		Stop opalcoin server.	No
validate_address	[opalcoinaddress]	Return information about [opalcoinaddress].	No
verify_message	[opalcoinaddress] [signature] [message]	Verify a signed message.	No
wallet_lock		Removes the wallet encryption key from memory, locking the wallet. After calling this method, you will need to call walletpassphrase again before being able to call any methods which require the wallet to be unlocked.	No
wallet_passphrase	[passphrase] [timeout]	Stores the wallet decryption key in memory for	No
wallet_passphrase_change	[oldpassphrase] [newpassphrase]	Changes the wallet passphrase from	No

*Table stolen from node-opalcoin

Contributing

For local testing, make sure to replace the user/password in spec/client_spec.rb and spec/opalcoin_client_spec.rb with the credentials for your local opalcoind.

Fork it
Create your feature branch (git checkout -b my-new-feature)
Commit your changes (git commit -am 'Add some feature')
Push to the branch (git push origin my-new-feature)
Create new Pull Request

Can't I just use a client for bitcoin or litecoin?

Perhaps, but this way you don't need to worry about any current or future api inconsistencies. Plus, why use a tool built for an inferior alt coin?

vashshawn/opal_client