old_contents: import json
  import os
  import sys
  
  from server_common.ioc_data_source import IocDataSource
  from server_common.mysql_abstraction_layer import SQLAbstraction
  from server_common.utilities import print_and_log, SEVERITY
  
  
  def register_ioc_start(ioc_name, pv_database=None, prefix=None):
      """
      A helper function to register the start of an ioc.
      Args:
          ioc_name: name of the ioc to start
          pv_database: doctionary of pvs in the iov
          prefix: prefix of pvs in this ioc
      """
      try:
          exepath = sys.argv[0]
          if pv_database is None:
              pv_database = {}
          if prefix is None:
              prefix = "none"
  
          ioc_data_source = IocDataSource(SQLAbstraction("iocdb", "iocdb", "$iocdb"))
          ioc_data_source.insert_ioc_start(ioc_name, os.getpid(), exepath, pv_database, prefix)
      except Exception as e:
          print_and_log("Error registering ioc start: {}: {}".format(e.__class__.__name__, e), SEVERITY.MAJOR)
  
  
  def get_macro_values():
      """
      Parse macro environment JSON into dict. To make this work use the icpconfigGetMacros program.
  
      Returns: Macro Key:Value pairs as dict
      """
      macros = json.loads(os.environ.get("REFL_MACROS", ""))
      macros = {key: value for (key, value) in macros.items()}
      return macros
  
new_contents: import json
  import os
  import sys
  
  from server_common.ioc_data_source import IocDataSource
  from server_common.mysql_abstraction_layer import SQLAbstraction
  from server_common.utilities import print_and_log, SEVERITY
  
  
  def register_ioc_start(ioc_name, pv_database=None, prefix=None):
      """
      A helper function to register the start of an ioc.
      Args:
          ioc_name: name of the ioc to start
          pv_database: doctionary of pvs in the iov
          prefix: prefix of pvs in this ioc
      """
      try:
          exepath = sys.argv[0]
          if pv_database is None:
              pv_database = {}
          if prefix is None:
              prefix = "none"
  
          ioc_data_source = IocDataSource(SQLAbstraction("iocdb", "iocdb", "$iocdb"))
          ioc_data_source.insert_ioc_start(ioc_name, os.getpid(), exepath, pv_database, prefix)
      except Exception as e:
          print_and_log("Error registering ioc start: {}: {}".format(e.__class__.__name__, e), SEVERITY.MAJOR)
  
  
  def get_macro_values():
      """
      Parse macro environment JSON into dict. To make this work use the icpconfigGetMacros program.
  
      Returns: Macro Key:Value pairs as dict
      """
      macros = json.loads(os.environ.get("REFL_MACROS", "{}"))
      macros = {key: value for (key, value) in macros.items()}
      return macros
  
subject: Return empty dict if not defined rather than error