docs: def run(self, conn, tmp, module_name, module_args, inject):
          ''' handler for fetch operations '''
  
          # load up options
          options = utils.parse_kv(module_args)
          source = options.get('src', None)
          dest = options.get('dest', None)
          if source is None or dest is None:
              results = dict(failed=True, msg="src and dest are required")
              return ReturnData(conn=conn, result=results)
  
          # files are saved in dest dir, with a subdir for each host, then the filename
          dest   = "%s/%s/%s" % (utils.path_dwim(self.runner.basedir, dest), conn.host, source)
          dest   = dest.replace("//","/")
  
          # calculate md5 sum for the remote file
          remote_md5 = self.runner._remote_md5(conn, tmp, source)
  
          # use slurp if sudo and permissions are lacking
          remote_data = None
          if remote_md5 in ('1', '2') and self.runner.sudo:
              slurpres = self.runner._execute_module(conn, tmp, 'slurp', 'src=%s' % source, inject=inject)
              if slurpres.is_successful():
                  if slurpres.result['encoding'] == 'base64':
                      remote_data = base64.b64decode(slurpres.result['content'])
                  if remote_data is not None:
                      remote_md5 = utils.md5s(remote_data)
  
          # these don't fail because you may want to transfer a log file that possibly MAY exist
          # but keep going to fetch other log files
          if remote_md5 == '0':
              result = dict(msg="unable to calculate the md5 sum of the remote file", file=source, changed=False)
              return ReturnData(conn=conn, result=result)
          if remote_md5 == '1':
              result = dict(msg="the remote file does not exist, not transferring, ignored", file=source, changed=False)
              return ReturnData(conn=conn, result=result)
          if remote_md5 == '2':
              result = dict(msg="no read permission on remote file, not transferring, ignored", file=source, changed=False)
              return ReturnData(conn=conn, result=result)
  
          # calculate md5 sum for the local file
          local_md5 = utils.md5(dest)
  
          if remote_md5 != local_md5:
              # create the containing directories, if needed
              if not os.path.isdir(os.path.dirname(dest)):
                  os.makedirs(os.path.dirname(dest))
  
              # fetch the file and check for changes
              if remote_data is None:
                  conn.fetch_file(source, dest)
              else:
                  f = open(dest, 'w')
                  f.write(remote_data)
                  f.close()
              new_md5 = utils.md5(dest)
              if new_md5 != remote_md5:
                  result = dict(failed=True, md5sum=new_md5, msg="md5 mismatch", file=source, dest=dest)
                  return ReturnData(conn=conn, result=result)
              result = dict(changed=True, md5sum=new_md5, dest=dest)
              return ReturnData(conn=conn, result=result)
          else:
              result = dict(changed=False, md5sum=local_md5, file=source, dest=dest)
              return ReturnData(conn=conn, result=result)