Package haizea :: Package core :: Package scheduler :: Module slottable :: Class AvailabilityWindow

Class AvailabilityWindow

An availability window

A particularly important operation with the slot table is determining the "availability window" of resources starting at a given time. In a nutshell, an availability window provides a convenient abstraction over the slot table, with methods to answer questions like "If I want to start a least at time T, are there enough resources available to start the lease?" "Will those resources be available until time T+t?" "If not, what's the longest period of time those resources will be available?" etc.

AvailabilityWindow objects are not meant to be created directly, and should be created through the SlotTable's get_availability_window method.

Instance Methods

[hide private]

__init__(self, slottable, time)
Constructor

source code

ResourceTuple

get_availability(self, time, node)
Determines the available capacity at a given time and node

source code

OngoingAvailability

get_ongoing_availability(self, time, node, preempted_leases=[])
Determines the available capacity from a given time onwards. source code

list of int

get_nodes_at(self, time)
Get all the nodes at a given time.

source code

get_leases_at(self, node, time)
Get leases scheduled on a node at a given time.

source code

list of Leases

get_leases_between(self, from_time, until_time)
Get all the leases scheduled in an interval.

source code

DateTimeDelta

get_capacity_duration(self, node, time)
Determine how much longer the capacity in a node will last, starting at a given time.

source code

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__