client_states

class blitz.communications.client_states.BaseState

A base state diagram which provides a few methods - this should not be directly instantiated.

All methods return a BaseState derived object which should handle future message processing

enter_state(tcp, state, args=None)

Called when entering the state

go_to_state(tcp, state, args=None)

Transition to a new state and call enter_state on it

Returns:the new state

receive_message(tcp, msg)

Called when a message needs processing

send_message(tcp, msg)

Send the passed message over TCP and return the current state

class blitz.communications.client_states.ClientDownloadingState

Handles the client in logging state - sends periodic status updates

class blitz.communications.client_states.ClientIdleState

Handles the client idling, waiting for further commands

class blitz.communications.client_states.ClientInitState

Handles the client starting up - sends a “logging” query to the logger and waits for the response

enter_state(tcp, state, args=None)

Send a logging query to the logger

class blitz.communications.client_states.ClientLoggingState

Handles the client in logging state - sends periodic status updates

enter_state(tcp, state, args=None)

sets up a timer which periodically polls the data logger for updates

request_update(stop_event, tcp)

called on timer tick to request an update from the TCP server

class blitz.communications.client_states.ClientStartingState

Handles logging starting - waits for ACK from server

class blitz.communications.client_states.ClientStoppingState

Handles waiting for acknowledgement from a client before entering IDLE state