Class: Record::BASE

Inherits:
Object
  • Object
show all
Defined in:
lib/record/record.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(dbconn) ⇒ BASE

Returns a new instance of BASE.



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# File 'lib/record/record.rb', line 7

def initialize(dbconn)
  begin
    $db_conn = Mysql.real_connect(dbconn[:host], dbconn[:username], dbconn[:password], dbconn[:database], dbconn[:port])
    #$logger.debug("Primary database initialized => #{dbconn[:host]}")
    # Check to make sure there is a read db in the configs
    if dbconn[:read_host].nil?
      $db_conn_read = $db_conn
    else
      $db_conn_read = Mysql.real_connect(dbconn[:read_host], dbconn[:read_username], dbconn[:read_password], dbconn[:read_database], dbconn[:read_port])
    end
    #$logger.debug("Secondary database initialized => #{dbconn[:read_host]}")
  rescue
    # No db information include. No problem.  We just won't have a database connection
    #$logger.warn("No database connection initialized")
  end
end

Instance Attribute Details

#status ⇒ Object (readonly)

Returns the value of attribute status.



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# File 'lib/record/record.rb', line 5

def status
  @status
end

Class Method Details

.query(query_string) ⇒ Object 



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# File 'lib/record/record.rb', line 24

def self.query(query_string)
  n = 0							# track how many times that the system had to reconnect to the db
  begin
    # Test to see if the query starts with a select which would mean it was a read query
    if query_string.split[0].upcase == "SELECT"
      #$logger.debug("Using read database => \"#{query_string}\"")
      res = $db_conn_read.query(query_string)
    else
      #$logger.debug("Using update database => \"#{query_string}\"")
      res = $db_conn.query(query_string)
    end
  rescue Mysql::Error => e
    $logger.error("Mysql query => #{query_string}")
    $logger.error("Mysql::Error '#{e.to_s}'")
    case e.to_s
      when 'MySQL server has gone away'
        $logger.warn("Connection to database #{dbconn[:host]} has gone away.  Reconnecting.") if n == 0
        self.new
        n += 1
        retry
      when 'Lost connection to MySQL server during query'
        $logger.warn("Lost connection #{dbconn[:host]}.  Reconnecting.") if n == 0
        self.new
        n += 1
        retry
      else
        # Don't know what to do because of an unknown error so to play it safe we'll just break instead looping
        $logger.warn("ERROR: #{e.to_s} Not sure what this error is from #{dbconn[:host]}.")
    end
  end
  return res
end