cloud_node.py 文件源码

def get_query_tag_value(self, path, query_tag):
        """This is a utility method to query for specific the http parameters in the uri.  

        Returns the value of the parameter, or None if not found."""  
        data = { }
        parsed_path = urlparse(self.path)
        query_tokens = parsed_path.query.split('&')
        # find the 'ids' query, there can only be one
        for tok in query_tokens:
            query_tok = tok.split('=')
            query_key = query_tok[0]
            if query_key is not None and query_key == query_tag:
                # ids tag contains a comma delimited list of ids
                data[query_tag] = query_tok[1]    
                break        
        return data.get(query_tag,None)