/
state_test.go
225 lines (192 loc) · 6.38 KB
/
state_test.go
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// Copyright (C) 2020 Storj Labs, Inc.
// See LICENSE for copying information.
package nodeselection_test
import (
"strconv"
"testing"
"github.com/stretchr/testify/require"
"golang.org/x/sync/errgroup"
"storj.io/common/storj"
"storj.io/common/testcontext"
"storj.io/common/testrand"
"storj.io/storj/satellite/nodeselection"
)
func TestState_SelectNonDistinct(t *testing.T) {
ctx := testcontext.New(t)
defer ctx.Cleanup()
reputableNodes := joinNodes(
createRandomNodes(2, "1.0.1", false, true),
createRandomNodes(3, "1.0.2", false, true),
)
newNodes := joinNodes(
createRandomNodes(2, "1.0.3", false, false),
createRandomNodes(3, "1.0.4", false, false),
)
nodes := joinNodes(reputableNodes, newNodes)
lastNet, err := nodeselection.CreateNodeAttribute("last_net")
require.NoError(t, err)
{ // select 5 non-distinct subnet reputable nodes
state := nodeselection.NewState(nodes, map[storj.PlacementConstraint]nodeselection.Placement{
0: {
Selector: nodeselection.UnvettedSelector(0, nodeselection.AttributeGroupSelector(lastNet)),
},
})
const selectCount = 5
selected, err := state.Select(0, selectCount, nil, nil)
require.NoError(t, err)
require.Len(t, selected, selectCount)
}
{ // select 6 non-distinct subnet reputable and new nodes (50%)
const selectCount = 6
const newFraction = 0.5
state := nodeselection.NewState(nodes, map[storj.PlacementConstraint]nodeselection.Placement{
0: {
Selector: nodeselection.UnvettedSelector(0.5, nodeselection.AttributeGroupSelector(lastNet)),
},
})
selected, err := state.Select(0, selectCount, nil, nil)
require.NoError(t, err)
require.Len(t, selected, selectCount)
require.Len(t, intersectLists(selected, reputableNodes), selectCount*(1-newFraction))
require.Len(t, intersectLists(selected, newNodes), selectCount*newFraction)
}
{ // select 10 distinct subnet reputable and new nodes (100%), falling back to 5 reputable
const selectCount = 10
const newFraction = 1.0
state := nodeselection.NewState(nodes, map[storj.PlacementConstraint]nodeselection.Placement{
0: {
Selector: nodeselection.UnvettedSelector(newFraction, nodeselection.AttributeGroupSelector(lastNet)),
},
})
selected, err := state.Select(0, selectCount, nil, nil)
require.NoError(t, err)
require.Len(t, selected, selectCount)
require.Len(t, intersectLists(selected, reputableNodes), 5)
require.Len(t, intersectLists(selected, newNodes), 5)
}
}
func TestState_SelectDistinct(t *testing.T) {
ctx := testcontext.New(t)
defer ctx.Cleanup()
reputableNodes := joinNodes(
createRandomNodes(2, "1.0.1", true, true),
createRandomNodes(3, "1.0.2", true, true),
)
newNodes := joinNodes(
createRandomNodes(2, "1.0.3", true, false),
createRandomNodes(3, "1.0.4", true, false),
)
nodes := joinNodes(reputableNodes, newNodes)
lastNet, err := nodeselection.CreateNodeAttribute("last_net")
require.NoError(t, err)
{ // select 2 distinct subnet reputable nodes
const selectCount = 2
state := nodeselection.NewState(nodes, map[storj.PlacementConstraint]nodeselection.Placement{
0: {
Selector: nodeselection.UnvettedSelector(0, nodeselection.AttributeGroupSelector(lastNet)),
},
})
selected, err := state.Select(0, selectCount, nil, nil)
require.NoError(t, err)
require.Len(t, selected, selectCount)
}
{ // try to select 5 distinct subnet reputable nodes, but there are only two 2 in the state
const selectCount = 5
state := nodeselection.NewState(nodes, map[storj.PlacementConstraint]nodeselection.Placement{
0: {
Selector: nodeselection.UnvettedSelector(0, nodeselection.AttributeGroupSelector(lastNet)),
},
})
selected, err := state.Select(0, selectCount, nil, nil)
require.Error(t, err)
require.Len(t, selected, 2)
}
//
{ // select 4 distinct subnet reputable and new nodes (50%)
const selectCount = 4
const newFraction = 0.5
state := nodeselection.NewState(nodes, map[storj.PlacementConstraint]nodeselection.Placement{
0: {
Selector: nodeselection.UnvettedSelector(newFraction, nodeselection.AttributeGroupSelector(lastNet)),
},
})
selected, err := state.Select(0, selectCount, nil, nil)
require.NoError(t, err)
require.Len(t, selected, selectCount, nil)
require.Len(t, intersectLists(selected, reputableNodes), selectCount*(1-newFraction))
require.Len(t, intersectLists(selected, newNodes), selectCount*newFraction)
}
}
func TestState_Select_Concurrent(t *testing.T) {
ctx := testcontext.New(t)
defer ctx.Cleanup()
reputableNodes := joinNodes(
createRandomNodes(2, "1.0.1", false, true),
createRandomNodes(3, "1.0.2", false, true),
)
newNodes := joinNodes(
createRandomNodes(2, "1.0.3", false, false),
createRandomNodes(3, "1.0.4", false, false),
)
nodes := joinNodes(reputableNodes, newNodes)
state := nodeselection.NewState(nodes, map[storj.PlacementConstraint]nodeselection.Placement{
0: {
Selector: nodeselection.UnvettedSelector(0.5, nodeselection.RandomSelector()),
},
})
var group errgroup.Group
group.Go(func() error {
const selectCount = 5
nodes, err := state.Select(0, selectCount, nil, nil)
require.Len(t, nodes, selectCount)
return err
})
group.Go(func() error {
const selectCount = 4
nodes, err := state.Select(0, selectCount, nil, nil)
require.Len(t, nodes, selectCount)
return err
})
require.NoError(t, group.Wait())
}
// createRandomNodes creates n random nodes all in the subnet.
func createRandomNodes(n int, subnet string, shareNets bool, vetted bool) []*nodeselection.SelectedNode {
xs := make([]*nodeselection.SelectedNode, n)
for i := range xs {
addr := subnet + "." + strconv.Itoa(i) + ":8080"
xs[i] = &nodeselection.SelectedNode{
ID: testrand.NodeID(),
LastNet: addr,
LastIPPort: addr,
Vetted: vetted,
}
if shareNets {
xs[i].LastNet = subnet
} else {
xs[i].LastNet = addr
}
}
return xs
}
// joinNodes appends all slices into a single slice.
func joinNodes(lists ...[]*nodeselection.SelectedNode) []*nodeselection.SelectedNode {
xs := []*nodeselection.SelectedNode{}
for _, list := range lists {
xs = append(xs, list...)
}
return xs
}
// intersectLists returns nodes that exist in both lists compared by ID.
func intersectLists(as, bs []*nodeselection.SelectedNode) []*nodeselection.SelectedNode {
var xs []*nodeselection.SelectedNode
next:
for _, a := range as {
for _, b := range bs {
if a.ID == b.ID {
xs = append(xs, a)
continue next
}
}
}
return xs
}