config_utils.py :  » Development » SnapLogic » snaplogic » common » config » Python Open Source

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Python Open Source » Development » SnapLogic 
SnapLogic » snaplogic » common » config » config_utils.py
from snaplogic.common.config.configobj import ConfigObj

def modify_config_contents(original_dict, changes):
    """
    Rewrite the server config file with specified params.
    
    @param original_dict: The config dictionary that needs to be patched with the changes
    @type original_dict:  ConfigObj or dict
    
    @param changes: The changes that should be applied.
    @type changes:  dict
    
    """
    
    for k in changes:
        if k in original_dict:
            # We need to merge in the changes
            if isinstance(original_dict[k], dict):
                modify_config_contents(original_dict[k], changes[k])
                continue
            elif changes[k] and isinstance(changes[k], list) and (changes[k][0] == '+'):
                # We have a list which needs to be appended to whatever the config file currently
                # has. Please note that in ConfigObj, a list is just a list of strings.
                if original_dict[k]:
                    l = changes[k][1:]
                    if isinstance(original_dict[k], list):
                        original_dict[k].extend(l)
                    else:
                        l.insert(0, original_dict[k])
                        original_dict[k] = l
                    continue
                
        # For all other cases, just overwrite the current value of the dict entry.
        original_dict[k] = changes[k]
        
def modify_config_file(fname, changes, new_file_name):
     conf = ConfigObj(fname)
     modify_config_contents(conf, changes)
     conf.filename = new_file_name
     conf.write()
     
         
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