e3caa90c31
refact imports to github.xxx. update go.mod + go.sum * removed vendor/ folder * Added vendor/ submodule. Moved dependencies that need to be vendored into separate repository. - https://github.com/spdfg/elektron-vendor Added vendor/ as a submodule using the below command. - git submodule add https://github.com/spdfg/elektron-vendor vendor If wanting to use vendor, run the following commands after cloning elektron. 1. git submodule init 2. git submodule update * added instructions to clone vendor/ submodule. * updated module to spdfg. Refactored imports
121 lines
3.8 KiB
Go
121 lines
3.8 KiB
Go
// Copyright (C) 2018 spdfg
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//
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// This file is part of Elektron.
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//
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// Elektron is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Elektron is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Elektron. If not, see <http://www.gnu.org/licenses/>.
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//
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package schedulers
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import (
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mesos "github.com/mesos/mesos-go/api/v0/mesosproto"
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sched "github.com/mesos/mesos-go/api/v0/scheduler"
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"github.com/spdfg/elektron/def"
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"github.com/spdfg/elektron/utilities/mesosUtils"
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"github.com/spdfg/elektron/utilities/offerUtils"
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)
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// Decides if to take an offer or not
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func (s *FirstFit) takeOffer(spc SchedPolicyContext, offer *mesos.Offer, task def.Task) bool {
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baseSchedRef := spc.(*BaseScheduler)
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cpus, mem, watts := offerUtils.OfferAgg(offer)
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//TODO: Insert watts calculation here instead of taking them as a parameter
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wattsConsideration, err := def.WattsToConsider(task, baseSchedRef.classMapWatts, offer)
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if err != nil {
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// Error in determining wattsConsideration
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baseSchedRef.LogElectronError(err)
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}
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if cpus >= task.CPU && mem >= task.RAM && (!baseSchedRef.wattsAsAResource || watts >= wattsConsideration) {
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return true
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}
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return false
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}
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// Elektron scheduler implements the Scheduler interface.
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type FirstFit struct {
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baseSchedPolicyState
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}
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func (s *FirstFit) ConsumeOffers(spc SchedPolicyContext, driver sched.SchedulerDriver, offers []*mesos.Offer) {
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baseSchedRef := spc.(*BaseScheduler)
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baseSchedRef.LogOffersReceived(offers)
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for _, offer := range offers {
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offerUtils.UpdateEnvironment(offer)
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select {
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case <-baseSchedRef.Shutdown:
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baseSchedRef.LogNoPendingTasksDeclineOffers(offer)
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driver.DeclineOffer(offer.Id, mesosUtils.LongFilter)
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baseSchedRef.LogNumberOfRunningTasks()
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continue
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default:
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}
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tasks := []*mesos.TaskInfo{}
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// First fit strategy
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offerTaken := false
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for i := 0; i < len(baseSchedRef.tasks); i++ {
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// If scheduling policy switching enabled, then
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// stop scheduling if the #baseSchedRef.schedWindowSize tasks have been scheduled.
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if baseSchedRef.schedPolSwitchEnabled && (s.numTasksScheduled >= baseSchedRef.schedWindowSize) {
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break // Offers will automatically get declined.
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}
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task := baseSchedRef.tasks[i]
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// Don't take offer if it doesn't match our task's host requirement.
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if offerUtils.HostMismatch(*offer.Hostname, task.Host) {
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continue
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}
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// Decision to take the offer or not
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if s.takeOffer(spc, offer, task) {
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baseSchedRef.LogCoLocatedTasks(offer.GetSlaveId().GoString())
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taskToSchedule := baseSchedRef.newTask(offer, task)
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tasks = append(tasks, taskToSchedule)
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baseSchedRef.LogTaskStarting(&task, offer)
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LaunchTasks([]*mesos.OfferID{offer.Id}, tasks, driver)
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offerTaken = true
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baseSchedRef.LogSchedTrace(taskToSchedule, offer)
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*task.Instances--
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s.numTasksScheduled++
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if *task.Instances <= 0 {
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// All instances of task have been scheduled, remove it
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baseSchedRef.tasks = append(baseSchedRef.tasks[:i], baseSchedRef.tasks[i+1:]...)
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if len(baseSchedRef.tasks) <= 0 {
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baseSchedRef.LogTerminateScheduler()
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close(baseSchedRef.Shutdown)
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}
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}
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break // Offer taken, move on.
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}
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}
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// If there was no match for the task.
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if !offerTaken {
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cpus, mem, watts := offerUtils.OfferAgg(offer)
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baseSchedRef.LogInsufficientResourcesDeclineOffer(offer, cpus, mem, watts)
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driver.DeclineOffer(offer.Id, mesosUtils.DefaultFilter)
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}
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}
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}
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