Class: TxCatcher::Server

Inherits:
Goliath::API
  • Object
show all
Defined in:
lib/txcatcher/server.rb

Instance Method Summary collapse

Instance Method Details

#address(path) ⇒ Object 



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# File 'lib/txcatcher/server.rb', line 40

def address(path)
  path = path.sub(/\?.*/, '').split("/").delete_if { |i| i.empty? }
  addr = path.last

  address  = Address.find_or_create(address: addr)
  unless address.deposits.empty?
    deposits       = Deposit.where(address_id: address.id)
    deposits_count = deposits.count
    deposits       = deposits.eager(:transaction).limit(params["limit"] || 100)
    transactions   = deposits.map { |d| d.transaction }
    deposits = deposits.map do |d|
      t = d.transaction
      t.update(protected: true) unless t.protected
      t.update_block_height
      result = {
        txid:          t.txid,
        amount:        d.amount_in_btc,
        satoshis:      d.amount,
        confirmations: t.confirmations,
        block_height:  t.block_height,
      }
      result.merge!({ rbf: "yes", rbf_previous_txid: t.rbf_previous_transaction.txid }) if t.rbf?
      result
    end
    return [200, {}, { address: address.address, received: address.received, deposits_count: deposits_count, deposits_shown: deposits.size, deposits: deposits }.to_json]
  else
    return [200, {}, { address: addr, received: 0, deposits: [] }.to_json]
  end
end

#broadcast_tx(txhex) ⇒ Object 



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# File 'lib/txcatcher/server.rb', line 122

def broadcast_tx(txhex)
  TxCatcher.rpc_node.sendrawtransaction(txhex)
  tx = TxCatcher.rpc_node.decoderawtransaction(txhex)
  return [200, {}, tx.to_json]
end

#feerate(blocks_target) ⇒ Object 



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# File 'lib/txcatcher/server.rb', line 128

def feerate(blocks_target)
  result = TxCatcher.rpc_node.estimatesmartfee(blocks_target.to_i)

  # This is for older versions of bitcoind/litecoind clients
  if result.to_s.include?("error")
    result = TxCatcher.rpc_node.estimatefee(blocks_target.to_i)
    result = { "feerate" => result, "blocks" => blocks_target}
  end

  return [200, {}, result["feerate"].to_s]
end

#response(env) ⇒ Object 



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# File 'lib/txcatcher/server.rb', line 7

def response(env)
  uri = env["REQUEST_URI"]
  begin
    return route_for(uri)
  rescue BitcoinRPC::JSONRPCError => e
    LOGGER.report e.to_s + "\n" + e.backtrace.join("\n")
    return [400, {}, { error: e.data }.to_json]
  rescue Exception => e
    LOGGER.report e.to_s + "\n" + e.backtrace.join("\n")
    return [500, {}, { error: e.to_s }.to_json]
  end
end

#route_for(path) ⇒ Object 



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# File 'lib/txcatcher/server.rb', line 20

def route_for(path)
  puts "[REQUEST: #{path}]"
  if path =~ /\A\/addr\/[0-9a-zA-Z]+\/utxo/
    utxo(path)
  elsif path.start_with? "/addr/"
    address(path)
  elsif path.start_with? "/tx/send"
    broadcast_tx(params["rawtx"])
  elsif path.start_with? "/tx/"
    tx(path)
  elsif path.start_with? "/feerate"
    feerate(params["blocks_target"] || 2)
  elsif path == "/" || path.empty?
    version = File.read(File.expand_path(File.dirname(__FILE__) + "../../../VERSION"))
    [200, {}, "TxCatcher server v#{version.strip}, #{TxCatcher::Config.rpcnode["name"]}, current_block_height: #{TxCatcher.current_block_height}"]
  else
    [404, {}, { error: "404, not found" }.to_json]
  end
end

#tx(path) ⇒ Object 



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# File 'lib/txcatcher/server.rb', line 109

def tx(path)
  path = path.sub(/\?.*/, '').split("/").delete_if { |i| i.empty? }
  txid = path.last
  tx = Transaction.find_or_create_from_rpc(txid)

  if tx && (!tx.deposits.empty? || tx.rbf?)
    tx.update_block_height! if tx.block_height.nil?
    return [200, {}, tx.to_json]
  else
    return [404, {}, "Transaction not found"]
  end
end

#utxo(path) ⇒ Object 



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# File 'lib/txcatcher/server.rb', line 70

def utxo(path)
  path = path.sub(/\?.*/, '').split("/").delete_if { |i| i.empty? }
  path.pop
  addr = path.last

  address  = Address.find_or_create(address: addr)
  deposits = Deposit.where(address_id: address.id).limit(params["limit"] || 100).eager(:transaction)
  return [200, {}, "{}"] if address.deposits.empty?

  transactions = deposits.map { |d| d.transaction }
  transactions.sort!          { |t1,t2| t2.created_at <=> t1.created_at }

  transactions.each do |t|
    # If we see a transaction with 0 confirmations, let's check if it got any news confirmations
    # by querying Bitcoind RPC.
    t.update_block_height_from_rpc if t.confirmations == 0
    # If still not confirmed, let's make it protected so it's not deleted during cleanup.
    t.protected = true if t.confirmations == 0
  end

  Transaction.update_all(transactions) # will only update the ones that changed!

  utxos = transactions.map do |t|
    outs = t.tx_hash["vout"].select { |out| out["scriptPubKey"]["addresses"] == [addr] }
    outs.map! do |out|
      out["confirmations"]   = t.confirmations || 0
      out["txid"]            = t.txid
      if t.rbf?
        out["rbf"]               = "yes"
        out["rbf_previous_txid"] = t.rbf_previous_transaction.txid
      end
      out
    end
    outs
  end.flatten

  return [200, {}, utxos.to_json]
end