Class: OracleToMysql::Command::ForkAndExecuteSqlplusCommand

Inherits:
OracleToMysql::Command show all
Defined in:
lib/oracle_to_mysql/command/fork_and_execute_sqlplus_command.rb

Instance Attribute Summary

Attributes inherited from OracleToMysql::Command

#client_class

Instance Method Summary collapse

Methods inherited from OracleToMysql::Command

#error, #execute, #finished, #info, #output, #started, #warn

Instance Method Details

#command_line_invocation ⇒ Object 



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# File 'lib/oracle_to_mysql/command/fork_and_execute_sqlplus_command.rb', line 4

def command_line_invocation
  username = self.client_class.otm_source_config_hash['username']
  password = self.client_class.otm_source_config_hash['password']
  tns = OracleToMysql.tns_string_from_config(self.client_class.otm_source_config_hash)   #self.client_class.otm_source_config_hash['tns']
  "sqlplus -S '#{username}/#{password}@#{tns}' @#{self.client_class.otm_get_file_name_for(:oracle_commands)}"      
end

#execute_internal ⇒ Object 



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# File 'lib/oracle_to_mysql/command/fork_and_execute_sqlplus_command.rb', line 17

def execute_internal
  stderr_str = ""
  stdout_str = ""     
  the_command = self.command_line_invocation
  self.started("sqlplus child being spawned")
  unless
    Open4::popen4(the_command) { |pid, stdin, stdout, stderr|
      stderr_str = stderr.read
      stdout_str = stdout.read
      true
    }
    self.error("Could not execute #{the_command}")
    # raise "[#{self.to_s}][create_#{deriv_type.to_s}_with_convert][MBF##{mbf.id.to_s}] Couldn't execute #{convert_cmd}"
  end
  self.finished("sqlplus process terminated")

  if stderr_str.length > 0
    self.error("sqlplus had stderr output: #{stderr_str}")
  end
  if stdout_str.length > 0
    self.warn("sqlplus had stdout output: #{stdout_str}")
  end

  if File.exists?(self.client_class.otm_get_file_name_for(:oracle_output))
    spooled_file_size = File.size(self.client_class.otm_get_file_name_for(:oracle_output))
    sqlplus_file_size = File.size(self.client_class.otm_get_file_name_for(:oracle_commands))

    # This sqlplus file will have the oracle message
    if spooled_file_size > sqlplus_file_size
      self.info("sqlplus spooled #{spooled_file_size} bytes of output to #{self.client_class.otm_get_file_name_for(:oracle_output)}")
    else
      source_output_contents = IO.read(self.client_class.otm_get_file_name_for(:oracle_output))          
      self.warn("tiny data output: smaller than the sqlplus commands file, #{spooled_file_size} bytes, it might contains errors rather than data, I will check for Oracle error strings in #{self.client_class.otm_get_file_name_for(:oracle_output)} and die if so")
      if source_output_contents.match(/^ERROR at line/) && source_output_contents.match(/^ORA-/)
        self.error("sqlplus error: #{self.client_class.otm_get_file_name_for(:oracle_output)} contains both \"ERROR at line\" and \"ORA-\" in it, check it out, contents=#{source_output_contents}")            
      end          
    end
  else
    self.error("#{self.client_class.otm_get_file_name_for(:oracle_output)} does not exist")
  end
  self.info("sqlplus returned successfully")      
end

#temp_file_symbols ⇒ Object

overridden from parent to help CleanupTempFilesAndTables do it’s job



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# File 'lib/oracle_to_mysql/command/fork_and_execute_sqlplus_command.rb', line 13

def temp_file_symbols
  [:oracle_output]
end