Initial commit

app/workers/amqp/withdraw_coin.rb

@@ -0,0 +1,95 @@
+# encoding: UTF-8
+# frozen_string_literal: true
+
+module Workers
+  module AMQP
+    class WithdrawCoin < Base
+      def initialize
+        @logger = TaggedLogger.new(Rails.logger, worker: __FILE__)
+      end
+
+      def process(payload)
+        payload.symbolize_keys!
+
+        @logger.warn id: payload[:id], message: 'Received request for processing withdraw.'
+
+        withdraw = Withdraw.find_by_id(payload[:id])
+        if withdraw.blank?
+          @logger.warn id: payload[:id], message: 'The withdraw with such ID doesn\'t exist in database.'
+          return
+        end
+
+        withdraw.with_lock do
+          unless withdraw.processing?
+            @logger.warn id: withdraw.id,
+                         message: 'The withdraw is being processed by another worker or has already been processed.'
+            return
+          end
+
+          if withdraw.rid.blank?
+            @logger.warn id: withdraw.id,
+                         message: 'The destination address doesn\'t exist.'
+            withdraw.fail!
+            return
+          end
+
+          @logger.warn id: withdraw.id,
+                       amount: withdraw.amount.to_s('F'),
+                       fee: withdraw.fee.to_s('F'),
+                       currency: withdraw.currency.code.upcase,
+                       rid: withdraw.rid,
+                       message: 'Sending witdraw.'
+
+          wallet = Wallet.active.joins(:currencies)
+                         .find_by(currencies: { id: withdraw.currency_id }, kind: :hot)
+
+          unless wallet
+            @logger.warn id: withdraw.id,
+                         currency: withdraw.currency.code.upcase,
+                         message: 'Can\'t find active hot wallet for currency.'
+            withdraw.skip!
+            return
+          end
+
+          balance = wallet.current_balance(withdraw.currency)
+          if balance == 'N/A' || balance < withdraw.amount
+            @logger.warn id: withdraw.id,
+                         balance: balance.to_s,
+                         amount: withdraw.amount.to_s,
+                         message: 'The withdraw skipped because wallet balance is not sufficient or amount greater than wallet max_balance.'
+            return withdraw.skip!
+          end
+
+          @logger.warn id: withdraw.id,
+                       message: 'Sending request to Wallet Service.'
+
+          wallet_service = WalletService.new(wallet)
+          transaction = wallet_service.build_withdrawal!(withdraw)
+
+          @logger.warn id: withdraw.id,
+                       tid: transaction.hash,
+                       message: 'The currency API accepted withdraw and assigned transaction ID.'
+
+          @logger.warn id: withdraw.id,
+                       message: 'Updating withdraw state in database.'
+
+          withdraw.txid = transaction.hash
+          withdraw.dispatch
+          withdraw.save!
+
+          @logger.warn id: withdraw.id, message: 'Withdrawal has processed'
+
+        rescue StandardError => e
+          @logger.warn id: withdraw.id, message: 'Failed to process withdrawal. See exception details below.'
+          report_exception(e)
+          withdraw.err! e
+
+          raise e if is_db_connection_error?(e)
+
+          @logger.warn id: withdraw.id,
+                       message: 'Setting withdrawal state to errored.'
+        end
+      end
+    end
+  end
+end