What is the purpose of the any client function in client.py?

diggy · April 17, 2020, 9:31am

Moved from GitHub pydgraph/129

dgraph-io/pydgraph/blob/748339f749e7f14cf982804e89ecc893ad4ae9ac/pydgraph/client.py#L93


            return self.any_client().alter(operation, timeout=timeout,
                                           metadata=new_metadata,
                                           credentials=credentials)
        else:
            raise error

def txn(self, read_only=False, best_effort=False):
    """Creates a transaction."""
    return txn.Txn(self, read_only=read_only, best_effort=best_effort)

def any_client(self):
    """Returns a random client."""
    return random.choice(self._clients)

def add_login_metadata(self, metadata):
    new_metadata = list(self._login_metadata)
    if not metadata:
        return new_metadata
    new_metadata.extend(metadata)
    return new_metadata

It would be helpful if the usage of this function is elaborated with an example.

diggy · May 1, 2020, 6:52pm

martinmr commented :

The client can be given multiple gRPC clients. This function is used to load balance the requests. I updated the documentation to hopefully make this clearer. I am not adding an example because this is not meant to be used by users. When you call any of the other methods (login, alter, etc), this method will automatically select a random gRPC client for you.

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What is the purpose of the any client function in client.py?

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