sbroker v1.1.1

srand (sbroker v1.1.1)

This modules provides utility functions for basic load balancing based on choosing a random process. It is designed for use with OTP behaviour messaging using via names, e.g. {via, srand, {Process,...}}. The third element, {Process,...}, is a tuple containing pids (pid()) and/or process names (atom(), {global, any()}, {via, module(), any()} or {atom(), node()}). An element is chosen randomly, if the element is a pid() it is returned, otherwise the pid() of the process name is looked up.

It is not possible to locally look up the pid of a process with name {atom(), node()} if the node is not the local node. Therefore a registered name on another node is not supported for use with this module.

Link to this section Summary

Functions

send(Processes, Msg)
Send a message to one element, selected randomly, in a tuple of process names. Returns ok if the element chosen is a pid(). a locally registered name on another node, or a process is associated with the name. Otherwise exits.
whereis_name(Processes)
Lookup the pid or process name of one element, selected randomly, in a tuple of process names. If no process is associated with the name returns undefined.

Link to this section Functions

Link to this function

send(Processes, Msg)

Specs

send(Processes, Msg) -> ok when Processes :: tuple(), Msg :: any().
Send a message to one element, selected randomly, in a tuple of process names. Returns ok if the element chosen is a pid(). a locally registered name on another node, or a process is associated with the name. Otherwise exits.
Link to this function

whereis_name(Processes)

Specs

whereis_name(Processes) -> Process | undefined when Processes :: tuple(), Process :: pid().
Lookup the pid or process name of one element, selected randomly, in a tuple of process names. If no process is associated with the name returns undefined.