/
entities.go
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/
entities.go
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// Copyright (c) 2019 Uber Technologies, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package mimir_v0
import (
"strings"
log "github.com/sirupsen/logrus"
"github.com/uber/peloton/.gen/mesos/v1"
"github.com/uber/peloton/.gen/peloton/api/v0/task"
"github.com/uber/peloton/.gen/peloton/private/resmgr"
common "github.com/uber/peloton/pkg/placement/plugins/mimir/common"
"github.com/uber/peloton/pkg/placement/plugins/mimir/lib/model/labels"
"github.com/uber/peloton/pkg/placement/plugins/mimir/lib/model/metrics"
"github.com/uber/peloton/pkg/placement/plugins/mimir/lib/model/orderings"
"github.com/uber/peloton/pkg/placement/plugins/mimir/lib/model/placement"
"github.com/uber/peloton/pkg/placement/plugins/mimir/lib/model/requirements"
)
// TaskToEntity will convert a task to an entity.
func TaskToEntity(task *resmgr.Task, isLaunched bool) *placement.Entity {
entity := placement.NewEntity(task.GetId().GetValue())
if !isLaunched {
addMetrics(task, entity.Metrics)
}
addRelations(task.GetLabels(), entity.Relations)
var order []placement.Ordering
// if the task has a desired host, add the host as the highest priority when picking group
if len(task.GetDesiredHost()) != 0 {
label := labels.NewLabel(common.HostNameLabel, task.DesiredHost)
order = append(order, orderings.Negate(orderings.Label(nil, label)))
}
order = append(order,
orderings.Negate(orderings.Metric(orderings.GroupSource, common.DiskFree)),
orderings.Negate(orderings.Metric(orderings.GroupSource, common.MemoryFree)),
orderings.Negate(orderings.Metric(orderings.GroupSource, common.CPUFree)),
orderings.Negate(orderings.Metric(orderings.GroupSource, common.GPUFree)),
)
entity.Ordering = orderings.Concatenate(order...)
var req []placement.Requirement
req = append(req, makeAffinityRequirements(task.GetConstraint()))
req = append(req, makeMetricRequirements(task)...)
entity.Requirement = requirements.NewAndRequirement(req...)
return entity
}
func makeComparison(comparison task.LabelConstraint_Condition) requirements.Comparison {
switch comparison {
case task.LabelConstraint_CONDITION_LESS_THAN:
return requirements.LessThan
case task.LabelConstraint_CONDITION_EQUAL:
return requirements.Equal
case task.LabelConstraint_CONDITION_GREATER_THAN:
return requirements.GreaterThan
default:
log.WithField("condition", comparison).
Warn("unknown constraint condition")
return requirements.Equal
}
}
func makeLabel(key, value string) *labels.Label {
return labels.NewLabel(append(strings.Split(key, "."), value)...)
}
func makeAffinityRequirements(constraint *task.Constraint) placement.Requirement {
switch constraint.GetType() {
case task.Constraint_LABEL_CONSTRAINT:
kind := constraint.GetLabelConstraint().GetKind()
labelRelation := makeLabel(
constraint.GetLabelConstraint().GetLabel().GetKey(),
constraint.GetLabelConstraint().GetLabel().GetValue())
comparison := makeComparison(constraint.GetLabelConstraint().GetCondition())
switch kind {
case task.LabelConstraint_TASK:
return requirements.NewRelationRequirement(
nil, labelRelation, comparison, int(constraint.GetLabelConstraint().GetRequirement()))
case task.LabelConstraint_HOST:
return requirements.NewLabelRequirement(
nil, labelRelation, comparison, int(constraint.GetLabelConstraint().GetRequirement()))
default:
log.WithField("kind", kind).
Warn("unknown relation constraint kind")
return requirements.NewAndRequirement()
}
case task.Constraint_AND_CONSTRAINT:
var subRequirements []placement.Requirement
for _, subConstraint := range constraint.GetAndConstraint().GetConstraints() {
subRequirement := makeAffinityRequirements(subConstraint)
subRequirements = append(subRequirements, subRequirement)
}
return requirements.NewAndRequirement(subRequirements...)
case task.Constraint_OR_CONSTRAINT:
var subRequirements []placement.Requirement
for _, subConstraint := range constraint.GetOrConstraint().GetConstraints() {
subRequirement := makeAffinityRequirements(subConstraint)
subRequirements = append(subRequirements, subRequirement)
}
return requirements.NewOrRequirement(subRequirements...)
default:
if constraint != nil {
log.WithField("type", constraint.GetType()).
Warn("unknown constraint type")
}
return requirements.NewAndRequirement()
}
}
func makeMetricRequirements(task *resmgr.Task) []placement.Requirement {
resource := task.GetResource()
cpuRequirement := requirements.NewMetricRequirement(
common.CPUFree, requirements.GreaterThanEqual, resource.GetCpuLimit()*100.0)
memoryRequirement := requirements.NewMetricRequirement(
common.MemoryFree, requirements.GreaterThanEqual, resource.GetMemLimitMb()*metrics.MiB)
diskRequirement := requirements.NewMetricRequirement(
common.DiskFree, requirements.GreaterThanEqual, resource.GetDiskLimitMb()*metrics.MiB)
gpuRequirement := requirements.NewMetricRequirement(
common.GPUFree, requirements.GreaterThanEqual, resource.GetGpuLimit()*100.0)
portRequirement := requirements.NewMetricRequirement(
common.PortsFree, requirements.GreaterThanEqual, float64(task.GetNumPorts()))
return []placement.Requirement{
cpuRequirement, memoryRequirement, diskRequirement, gpuRequirement, portRequirement,
}
}
func addRelations(labels *mesos_v1.Labels, relations *labels.Bag) {
for _, label := range labels.GetLabels() {
log.WithField("label", label.String()).Debug("Adding relation label")
relations.Add(makeLabel(label.GetKey(), label.GetValue()))
}
}
func addMetrics(task *resmgr.Task, metricSet *metrics.Set) {
resource := task.GetResource()
metricSet.Set(common.CPUReserved, resource.GetCpuLimit()*100.0)
metricSet.Set(common.GPUReserved, resource.GetGpuLimit()*100)
metricSet.Set(common.MemoryReserved, resource.GetMemLimitMb()*metrics.MiB)
metricSet.Set(common.DiskReserved, resource.GetDiskLimitMb()*metrics.MiB)
metricSet.Set(common.PortsReserved, float64(task.GetNumPorts()))
}