You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

234 lines
5.8 KiB

// Copyright 2017 Tendermint. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package trust
import (
"fmt"
"io/ioutil"
"os"
"testing"
"time"
"github.com/stretchr/testify/assert"
dbm "github.com/tendermint/tmlibs/db"
"github.com/tendermint/tmlibs/log"
)
func TestTrustMetricStoreSaveLoad(t *testing.T) {
dir, err := ioutil.TempDir("", "trust_test")
if err != nil {
panic(err)
}
defer os.Remove(dir)
historyDB := dbm.NewDB("trusthistory", "goleveldb", dir)
config := TrustMetricConfig{
TrackingWindow: 5 * time.Minute,
IntervalLength: 50 * time.Millisecond,
}
// 0 peers saved
store := NewTrustMetricStore(historyDB, config)
store.SetLogger(log.TestingLogger())
store.saveToDB()
// Load the data from the file
store = NewTrustMetricStore(historyDB, config)
store.SetLogger(log.TestingLogger())
store.loadFromDB()
// Make sure we still have 0 entries
assert.Zero(t, store.Size())
// 100 peers
for i := 0; i < 100; i++ {
key := fmt.Sprintf("peer_%d", i)
tm := store.GetPeerTrustMetric(key)
tm.BadEvents(10)
tm.GoodEvents(1)
}
// Check that we have 100 entries and save
assert.Equal(t, 100, store.Size())
// Give the metrics time to process the history data
time.Sleep(1 * time.Second)
// Stop all the trust metrics and save
for _, tm := range store.peerMetrics {
tm.Stop()
}
store.saveToDB()
// Load the data from the DB
store = NewTrustMetricStore(historyDB, config)
store.SetLogger(log.TestingLogger())
store.loadFromDB()
// Check that we still have 100 peers with imperfect trust values
assert.Equal(t, 100, store.Size())
for _, tm := range store.peerMetrics {
assert.NotEqual(t, 1.0, tm.TrustValue())
}
// Stop all the trust metrics
for _, tm := range store.peerMetrics {
tm.Stop()
}
}
func TestTrustMetricStoreConfig(t *testing.T) {
historyDB := dbm.NewDB("", "memdb", "")
config := TrustMetricConfig{
ProportionalWeight: 0.5,
IntegralWeight: 0.5,
}
// Create a store with custom config
store := NewTrustMetricStore(historyDB, config)
store.SetLogger(log.TestingLogger())
// Have the store make us a metric with the config
tm := store.GetPeerTrustMetric("TestKey")
// Check that the options made it to the metric
assert.Equal(t, 0.5, tm.proportionalWeight)
assert.Equal(t, 0.5, tm.integralWeight)
tm.Stop()
}
func TestTrustMetricStoreLookup(t *testing.T) {
historyDB := dbm.NewDB("", "memdb", "")
store := NewTrustMetricStore(historyDB, DefaultConfig())
store.SetLogger(log.TestingLogger())
// Create 100 peers in the trust metric store
for i := 0; i < 100; i++ {
key := fmt.Sprintf("peer_%d", i)
store.GetPeerTrustMetric(key)
// Check that the trust metric was successfully entered
ktm := store.peerMetrics[key]
assert.NotNil(t, ktm, "Expected to find TrustMetric %s but wasn't there.", key)
}
// Stop all the trust metrics
for _, tm := range store.peerMetrics {
tm.Stop()
}
}
func TestTrustMetricStorePeerScore(t *testing.T) {
historyDB := dbm.NewDB("", "memdb", "")
store := NewTrustMetricStore(historyDB, DefaultConfig())
store.SetLogger(log.TestingLogger())
key := "TestKey"
tm := store.GetPeerTrustMetric(key)
// This peer is innocent so far
first := tm.TrustScore()
assert.Equal(t, 100, first)
// Add some undesirable events and disconnect
tm.BadEvents(1)
first = tm.TrustScore()
assert.NotEqual(t, 100, first)
tm.BadEvents(10)
second := tm.TrustScore()
if second > first {
t.Errorf("A greater number of bad events should lower the trust score")
}
store.PeerDisconnected(key)
// We will remember our experiences with this peer
tm = store.GetPeerTrustMetric(key)
assert.NotEqual(t, 100, tm.TrustScore())
tm.Stop()
}
func TestTrustMetricScores(t *testing.T) {
tm := NewMetric()
// Perfect score
tm.GoodEvents(1)
score := tm.TrustScore()
assert.Equal(t, 100, score)
// Less than perfect score
tm.BadEvents(10)
score = tm.TrustScore()
assert.NotEqual(t, 100, score)
tm.Stop()
}
func TestTrustMetricConfig(t *testing.T) {
// 7 days
window := time.Minute * 60 * 24 * 7
config := TrustMetricConfig{
TrackingWindow: window,
IntervalLength: 2 * time.Minute,
}
tm := NewMetricWithConfig(config)
// The max time intervals should be the TrackingWindow / IntervalLen
assert.Equal(t, int(config.TrackingWindow/config.IntervalLength), tm.maxIntervals)
dc := DefaultConfig()
// These weights should still be the default values
assert.Equal(t, dc.ProportionalWeight, tm.proportionalWeight)
assert.Equal(t, dc.IntegralWeight, tm.integralWeight)
tm.Stop()
config.ProportionalWeight = 0.3
config.IntegralWeight = 0.7
tm = NewMetricWithConfig(config)
// These weights should be equal to our custom values
assert.Equal(t, config.ProportionalWeight, tm.proportionalWeight)
assert.Equal(t, config.IntegralWeight, tm.integralWeight)
tm.Stop()
}
func TestTrustMetricStopPause(t *testing.T) {
// Cause time intervals to pass quickly
config := TrustMetricConfig{
TrackingWindow: 5 * time.Minute,
IntervalLength: 10 * time.Millisecond,
}
tm := NewMetricWithConfig(config)
// Allow some time intervals to pass and pause
time.Sleep(50 * time.Millisecond)
tm.Pause()
// Give the pause some time to take place
time.Sleep(10 * time.Millisecond)
first := tm.numIntervals
// Allow more time to pass and check the intervals are unchanged
time.Sleep(50 * time.Millisecond)
assert.Equal(t, first, tm.numIntervals)
// Get the trust metric activated again
tm.GoodEvents(5)
// Allow some time intervals to pass and stop
time.Sleep(50 * time.Millisecond)
tm.Stop()
// Give the stop some time to take place
time.Sleep(10 * time.Millisecond)
second := tm.numIntervals
// Allow more time to pass and check the intervals are unchanged
time.Sleep(50 * time.Millisecond)
assert.Equal(t, second, tm.numIntervals)
if first >= second {
t.Fatalf("numIntervals should always increase or stay the same over time")
}
}