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
106 lines
3.3 KiB
Go
106 lines
3.3 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 offerUtils
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import (
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"log"
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"strings"
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mesos "github.com/mesos/mesos-go/api/v0/mesosproto"
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"github.com/spdfg/elektron/constants"
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)
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func OfferAgg(offer *mesos.Offer) (float64, float64, float64) {
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var cpus, mem, watts float64
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for _, resource := range offer.Resources {
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switch resource.GetName() {
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case "cpus":
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cpus += *resource.GetScalar().Value
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case "mem":
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mem += *resource.GetScalar().Value
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case "watts":
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watts += *resource.GetScalar().Value
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}
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}
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return cpus, mem, watts
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}
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// Determine the power class of the host in the offer.
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func PowerClass(offer *mesos.Offer) string {
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var powerClass string
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for _, attr := range offer.GetAttributes() {
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if attr.GetName() == "class" {
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powerClass = attr.GetText().GetValue()
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}
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}
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return powerClass
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}
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// Implements the sort.Sort interface to sort Offers based on CPU.
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// TODO: Have a generic sorter that sorts based on a defined requirement (CPU, RAM, DISK or Watts).
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type OffersSorter []*mesos.Offer
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func (offersSorter OffersSorter) Len() int {
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return len(offersSorter)
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}
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func (offersSorter OffersSorter) Swap(i, j int) {
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offersSorter[i], offersSorter[j] = offersSorter[j], offersSorter[i]
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}
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func (offersSorter OffersSorter) Less(i, j int) bool {
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// Getting CPU resource availability of offersSorter[i].
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cpu1, _, _ := OfferAgg(offersSorter[i])
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// Getting CPU resource availability of offersSorter[j].
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cpu2, _, _ := OfferAgg(offersSorter[j])
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return cpu1 <= cpu2
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}
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// Is there a mismatch between the task's host requirement and the host corresponding to the offer.
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func HostMismatch(offerHost string, taskHost string) bool {
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if taskHost != "" && !strings.HasPrefix(offerHost, taskHost) {
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return true
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}
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return false
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}
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// If the host in the offer is a new host, add the host to the set of Hosts and
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// register the powerclass of this host.
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func UpdateEnvironment(offer *mesos.Offer) {
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var host = offer.GetHostname()
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// If this host is not present in the set of hosts.
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if _, ok := constants.Hosts[host]; !ok {
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log.Printf("New host detected. Adding host [%s]", host)
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// Add this host.
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constants.Hosts[host] = struct{}{}
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// Get the power class of this host.
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class := PowerClass(offer)
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log.Printf("Registering the power class... Host [%s] --> PowerClass [%s]", host, class)
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// If new power class, register the power class.
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if _, ok := constants.PowerClasses[class]; !ok {
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constants.PowerClasses[class] = make(map[string]struct{})
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}
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// If the host of this class is not yet present in PowerClasses[class], add it.
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if _, ok := constants.PowerClasses[class][host]; !ok {
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constants.PowerClasses[class][host] = struct{}{}
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}
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}
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}
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