storj/satellite/audit/disqualification_test.go

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// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.
package audit_test
import (
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"go.uber.org/zap"
"storj.io/common/memory"
"storj.io/common/pb"
"storj.io/common/storj"
"storj.io/common/testcontext"
"storj.io/common/testrand"
"storj.io/storj/private/testplanet"
"storj.io/storj/satellite"
"storj.io/storj/satellite/audit"
"storj.io/storj/satellite/metabase"
"storj.io/storj/satellite/overlay"
"storj.io/storj/satellite/reputation"
)
// TestDisqualificationTooManyFailedAudits does the following:
// - Create a failed audit report for a storagenode
// - Record the audit report several times and check that the node isn't
// disqualified until the audit reputation reaches the cut-off value.
func TestDisqualificationTooManyFailedAudits(t *testing.T) {
var (
auditDQCutOff = 0.4
)
testplanet.Run(t, testplanet.Config{
SatelliteCount: 1, StorageNodeCount: 1, Reconfigure: testplanet.Reconfigure{
Satellite: func(log *zap.Logger, index int, config *satellite.Config) {
config.Reputation.AuditLambda = 1
config.Reputation.AuditWeight = 1
config.Reputation.AuditDQ = auditDQCutOff
},
},
}, func(t *testing.T, ctx *testcontext.Context, planet *testplanet.Planet) {
var (
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satellitePeer = planet.Satellites[0]
nodeID = planet.StorageNodes[0].ID()
report = audit.Report{
Fails: storj.NodeIDList{nodeID},
}
)
satellitePeer.Audit.Worker.Loop.Pause()
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dossier, err := satellitePeer.Overlay.Service.Get(ctx, nodeID)
require.NoError(t, err)
require.Nil(t, dossier.Disqualified)
_, err = satellitePeer.Audit.Reporter.RecordAudits(ctx, audit.Report{
Successes: storj.NodeIDList{nodeID},
})
require.NoError(t, err)
reputationInfo, err := satellitePeer.Reputation.Service.Get(ctx, nodeID)
require.NoError(t, err)
prevReputation := calcReputation(reputationInfo)
// Report the audit failure until the node gets disqualified due to many
// failed audits.
iterations := 1
for ; ; iterations++ {
_, err := satellitePeer.Audit.Reporter.RecordAudits(ctx, report)
require.NoError(t, err)
reputationInfo, err := satellitePeer.Reputation.Service.Get(ctx, nodeID)
require.NoError(t, err)
reputation := calcReputation(reputationInfo)
require.Truef(t, prevReputation >= reputation,
"(%d) expected reputation to remain or decrease (previous >= current): %f >= %f",
iterations, prevReputation, reputation,
)
if reputation <= auditDQCutOff || reputation == prevReputation {
require.NotNilf(t, reputationInfo.Disqualified,
"Disqualified (%d) - cut-off: %f, prev. reputation: %f, current reputation: %f",
iterations, auditDQCutOff, prevReputation, reputation,
)
require.True(t, time.Since(*reputationInfo.Disqualified) >= 0,
"Disqualified should be in the past",
)
break
}
require.Nil(t, reputationInfo.Disqualified, "Disqualified")
prevReputation = reputation
}
require.True(t, iterations > 1, "the number of iterations must be at least 2")
})
}
func calcReputation(dossier *reputation.Info) float64 {
var (
alpha = dossier.AuditReputationAlpha
beta = dossier.AuditReputationBeta
)
return alpha / (alpha + beta)
}
func TestDisqualifiedNodesGetNoDownload(t *testing.T) {
// Uploads random data.
// Mark a node as disqualified.
// Check we don't get it when we require order limit.
testplanet.Run(t, testplanet.Config{
SatelliteCount: 1, StorageNodeCount: 4, UplinkCount: 1,
}, func(t *testing.T, ctx *testcontext.Context, planet *testplanet.Planet) {
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satellitePeer := planet.Satellites[0]
uplinkPeer := planet.Uplinks[0]
satellitePeer.Audit.Worker.Loop.Pause()
testData := testrand.Bytes(8 * memory.KiB)
err := uplinkPeer.Upload(ctx, satellitePeer, "testbucket", "test/path", testData)
require.NoError(t, err)
bucket := metabase.BucketLocation{ProjectID: uplinkPeer.Projects[0].ID, BucketName: "testbucket"}
segments, err := satellitePeer.Metainfo.Metabase.TestingAllSegments(ctx)
require.NoError(t, err)
require.Equal(t, 1, len(segments))
segment := segments[0]
disqualifiedNode := segment.Pieces[0].StorageNode
err = satellitePeer.Reputation.Service.TestDisqualifyNode(ctx, disqualifiedNode)
require.NoError(t, err)
limits, _, err := satellitePeer.Orders.Service.CreateGetOrderLimits(ctx, bucket, segment, 0)
require.NoError(t, err)
assert.Len(t, limits, len(segment.Pieces)-1)
for _, orderLimit := range limits {
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assert.False(t, isDisqualified(t, ctx, satellitePeer, orderLimit.Limit.StorageNodeId))
assert.NotEqual(t, orderLimit.Limit.StorageNodeId, disqualifiedNode)
}
})
}
func TestDisqualifiedNodesGetNoUpload(t *testing.T) {
// - mark a node as disqualified
// - check that we have an error if we try to create a segment using all storage nodes
testplanet.Run(t, testplanet.Config{
SatelliteCount: 1, StorageNodeCount: 4, UplinkCount: 1,
}, func(t *testing.T, ctx *testcontext.Context, planet *testplanet.Planet) {
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satellitePeer := planet.Satellites[0]
disqualifiedNode := planet.StorageNodes[0]
satellitePeer.Audit.Worker.Loop.Pause()
err := satellitePeer.Reputation.Service.TestDisqualifyNode(ctx, disqualifiedNode.ID())
require.NoError(t, err)
request := overlay.FindStorageNodesRequest{
RequestedCount: 4,
ExcludedIDs: nil,
MinimumVersion: "", // semver or empty
}
nodes, err := satellitePeer.Overlay.Service.FindStorageNodesForUpload(ctx, request)
assert.True(t, overlay.ErrNotEnoughNodes.Has(err))
assert.Len(t, nodes, 3)
for _, node := range nodes {
assert.False(t, isDisqualified(t, ctx, satellitePeer, node.ID))
assert.NotEqual(t, node.ID, disqualifiedNode)
}
})
}
func TestDisqualifiedNodeRemainsDisqualified(t *testing.T) {
// - mark a node as disqualified
// - give it high audit rate
// - check that the node remains disqualified
testplanet.Run(t, testplanet.Config{
SatelliteCount: 1, StorageNodeCount: 4, UplinkCount: 1,
Reconfigure: testplanet.Reconfigure{
Satellite: func(log *zap.Logger, index int, config *satellite.Config) {
config.Overlay.Node.MinimumDiskSpace = 10 * memory.MB
config.Reputation.AuditLambda = 0 // forget about history
config.Reputation.AuditWeight = 1
config.Reputation.AuditDQ = 0 // make sure new reputation scores are larger than the DQ thresholds
config.Reputation.SuspensionGracePeriod = time.Hour
config.Reputation.SuspensionDQEnabled = true
},
},
}, func(t *testing.T, ctx *testcontext.Context, planet *testplanet.Planet) {
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satellitePeer := planet.Satellites[0]
satellitePeer.Audit.Worker.Loop.Pause()
disqualifiedNode := planet.StorageNodes[0]
err := satellitePeer.Reputation.Service.TestDisqualifyNode(ctx, disqualifiedNode.ID())
require.NoError(t, err)
info := overlay.NodeCheckInInfo{
NodeID: disqualifiedNode.ID(),
IsUp: true,
Address: &pb.NodeAddress{
Address: "1.2.3.4",
},
Version: &pb.NodeVersion{
Version: "v0.0.0",
CommitHash: "",
Timestamp: time.Time{},
Release: false,
},
}
err = satellitePeer.DB.OverlayCache().UpdateCheckIn(ctx, info, time.Now(), overlay.NodeSelectionConfig{})
require.NoError(t, err)
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assert.True(t, isDisqualified(t, ctx, satellitePeer, disqualifiedNode.ID()))
err = satellitePeer.Reputation.Service.ApplyAudit(ctx, disqualifiedNode.ID(), reputation.AuditSuccess)
require.NoError(t, err)
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assert.True(t, isDisqualified(t, ctx, satellitePeer, disqualifiedNode.ID()))
})
}
func isDisqualified(t *testing.T, ctx *testcontext.Context, satellite *testplanet.Satellite, nodeID storj.NodeID) bool {
node, err := satellite.Overlay.Service.Get(ctx, nodeID)
require.NoError(t, err)
return node.Disqualified != nil
}