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affinities.go
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/
affinities.go
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package affinities
import (
"github.com/hashicorp/nomad/e2e/framework"
"github.com/stretchr/testify/require"
"github.com/hashicorp/nomad/e2e/e2eutil"
"github.com/hashicorp/nomad/helper/uuid"
)
type BasicAffinityTest struct {
framework.TC
jobIds []string
}
func init() {
framework.AddSuites(&framework.TestSuite{
Component: "Affinity",
CanRunLocal: true,
Cases: []framework.TestCase{
new(BasicAffinityTest),
},
})
}
func (tc *BasicAffinityTest) BeforeAll(f *framework.F) {
// Ensure cluster has leader before running tests
e2eutil.WaitForLeader(f.T(), tc.Nomad())
// Ensure that we have four client nodes in ready state
e2eutil.WaitForNodesReady(f.T(), tc.Nomad(), 4)
}
func (tc *BasicAffinityTest) TestSingleAffinities(f *framework.F) {
nomadClient := tc.Nomad()
uuid := uuid.Generate()
jobId := "aff" + uuid[0:8]
tc.jobIds = append(tc.jobIds, jobId)
allocs := e2eutil.RegisterAndWaitForAllocs(f.T(), nomadClient, "affinities/input/single_affinity.nomad", jobId)
jobAllocs := nomadClient.Allocations()
require := require.New(f.T())
// Verify affinity score metadata
for _, allocStub := range allocs {
alloc, _, err := jobAllocs.Info(allocStub.ID, nil)
require.Nil(err)
require.NotEmpty(alloc.Metrics.ScoreMetaData)
for _, sm := range alloc.Metrics.ScoreMetaData {
score, ok := sm.Scores["node-affinity"]
if ok {
require.Equal(1.0, score)
}
}
}
}
func (tc *BasicAffinityTest) TestMultipleAffinities(f *framework.F) {
nomadClient := tc.Nomad()
uuid := uuid.Generate()
jobId := "multiaff" + uuid[0:8]
tc.jobIds = append(tc.jobIds, jobId)
allocs := e2eutil.RegisterAndWaitForAllocs(f.T(), nomadClient, "affinities/input/multiple_affinities.nomad", jobId)
jobAllocs := nomadClient.Allocations()
require := require.New(f.T())
// Verify affinity score metadata
for _, allocStub := range allocs {
alloc, _, err := jobAllocs.Info(allocStub.ID, nil)
require.Nil(err)
require.NotEmpty(alloc.Metrics.ScoreMetaData)
node, _, err := nomadClient.Nodes().Info(alloc.NodeID, nil)
require.Nil(err)
dcMatch := node.Datacenter == "dc1"
rackMatch := node.Meta != nil && node.Meta["rack"] == "r1"
// Figure out expected node affinity score based on whether both affinities match or just one does
expectedNodeAffinityScore := 0.0
if dcMatch && rackMatch {
expectedNodeAffinityScore = 1.0
} else if dcMatch || rackMatch {
expectedNodeAffinityScore = 0.5
}
nodeScore := 0.0
// Find the node's score for this alloc
for _, sm := range alloc.Metrics.ScoreMetaData {
score, ok := sm.Scores["node-affinity"]
if ok && sm.NodeID == alloc.NodeID {
nodeScore = score
}
}
require.Equal(nodeScore, expectedNodeAffinityScore)
}
}
func (tc *BasicAffinityTest) TestAntiAffinities(f *framework.F) {
nomadClient := tc.Nomad()
uuid := uuid.Generate()
jobId := "antiaff" + uuid[0:8]
tc.jobIds = append(tc.jobIds, jobId)
allocs := e2eutil.RegisterAndWaitForAllocs(f.T(), nomadClient, "affinities/input/anti_affinities.nomad", jobId)
jobAllocs := nomadClient.Allocations()
require := require.New(f.T())
// Verify affinity score metadata
for _, allocStub := range allocs {
alloc, _, err := jobAllocs.Info(allocStub.ID, nil)
require.Nil(err)
require.NotEmpty(alloc.Metrics.ScoreMetaData)
node, _, err := nomadClient.Nodes().Info(alloc.NodeID, nil)
require.Nil(err)
dcMatch := node.Datacenter == "dc1"
rackMatch := node.Meta != nil && node.Meta["rack"] == "r1"
// Figure out expected node affinity score based on whether both affinities match or just one does
expectedAntiAffinityScore := 0.0
if dcMatch && rackMatch {
expectedAntiAffinityScore = -1.0
} else if dcMatch || rackMatch {
expectedAntiAffinityScore = -0.5
}
nodeScore := 0.0
// Find the node's score for this alloc
for _, sm := range alloc.Metrics.ScoreMetaData {
score, ok := sm.Scores["node-affinity"]
if ok && sm.NodeID == alloc.NodeID {
nodeScore = score
}
}
require.Equal(nodeScore, expectedAntiAffinityScore)
}
}
func (tc *BasicAffinityTest) AfterEach(f *framework.F) {
nomadClient := tc.Nomad()
jobs := nomadClient.Jobs()
// Stop all jobs in test
for _, id := range tc.jobIds {
jobs.Deregister(id, true, nil)
}
// Garbage collect
nomadClient.System().GarbageCollect()
}