Public Member Functions
	Mantle (Server s)

int	when (bool &decision)

int	where (Targets &decision)

int	howmuch (Load &decision)

int	configure (Policy when, Policy where, Policy howmuch)

int	update (ClusterMetrics metrics)

Protected Member Functions
int	execute (Policy p, Server s, ClusterMetrics m)

Constructor & Destructor Documentation

Mantle::Mantle ( Server s )

inline

Initializes a Mantle instance

Parameters

s	name of current server (the one running Mantle)

Member Function Documentation

Configure load balancing policies

Parameters

when	callback that decides when to move load
where	callback that decides which servers to send load to
howmuch	callback that decides what fraction of load to shed

int Mantle::howmuch ( Load & decision )

Executes the howmuch callback, which decides how much load the service should move

Parameters

decision amount of load the service should move

int Mantle::update ( ClusterMetrics metrics )

Update the metrics maintained by Mantle (should be done every polling interval)

Parameters

metrics values to update metrics data structure with

int Mantle::when ( bool & decision )

Executes the when callback, which decides whether the service should move load or not

Parameters

decision true if the policy wants the service to migrate load, false otherwise

int Mantle::where ( Targets & decision )

Executes the where callback, which decides where the service should move load (which servers)

Parameters

decision dictionary (rank -> load) that describes which rank to send load to

The documentation for this class was generated from the following file: