Examples of com.elastisys.scale.cloudadapters.commons.resizeplanner.ResizePlanner

com.elastisys.scale.cloudadapters.commons.resizeplanner.ResizePlanner

A {@link ResizePlanner} determines, for a certain machine pool, necessaryscaling actions needed to meet a certain desired pool size.

Given a machine pool and a termination queue (holding pool members currently scheduled for termination) and policies for scale-downs, a {@link ResizePlanner} produces a {@link ResizePlan} that tells a cloudadapter how to modify the pool in order to reach a certain desired pool size.

The effective size of the machine pool is considered to be the set of allocated machines (see {@link Machine#isAllocated()}) that have not been scheduled for termination. @see ResizePlan

    MachinePool machinePool = getMachinePool();
    int poolSize = machinePool.getAllocatedMachines().size();


    // clean out obsolete machines from termination queue
    this.terminationQueue.filter(machinePool.getAllocatedMachines());
    ResizePlanner resizePlanner = new ResizePlanner(machinePool,
        this.terminationQueue, scaleDownConfig()
            .getVictimSelectionPolicy(), scaleDownConfig()
            .getInstanceHourMargin());
    int netSize = resizePlanner.getEffectiveSize();


    ResizePlan resizePlan = resizePlanner
        .calculateResizePlan(desiredSize());
    if (resizePlan.isScaleUp()) {
      List<Machine> startedMachines = scaleUp(poolSize, resizePlan);
      poolSize += startedMachines.size();
    } else if (resizePlan.isScaleDown()) {

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Examples of com.elastisys.scale.cloudadapters.commons.resizeplanner.ResizePlanner

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