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orch_test.go
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package core
import (
"context"
"database/sql"
"errors"
"fmt"
"math"
"math/big"
"math/rand"
"strconv"
"sync"
"testing"
"time"
"github.com/golang/glog"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
"github.com/stretchr/testify/require"
"github.com/livepeer/go-livepeer/pm"
ethcommon "github.com/ethereum/go-ethereum/common"
"github.com/livepeer/go-livepeer/common"
"github.com/livepeer/go-tools/drivers"
"github.com/livepeer/lpms/ffmpeg"
"github.com/livepeer/go-livepeer/net"
)
var defaultRecipient = ethcommon.BytesToAddress([]byte("defaultRecipient"))
func TestServeTranscoder(t *testing.T) {
n, _ := NewLivepeerNode(nil, "", nil)
n.TranscoderManager = NewRemoteTranscoderManager()
strm := &StubTranscoderServer{}
// test that a transcoder was created
capabilities := NewCapabilities(DefaultCapabilities(), []Capability{})
go n.serveTranscoder(strm, 5, capabilities.ToNetCapabilities())
time.Sleep(1 * time.Second)
tc, ok := n.TranscoderManager.liveTranscoders[strm]
if !ok {
t.Error("Unexpected transcoder type")
}
// test shutdown
tc.eof <- struct{}{}
time.Sleep(1 * time.Second)
// stream should be removed
_, ok = n.TranscoderManager.liveTranscoders[strm]
if ok {
t.Error("Unexpected transcoder presence")
}
}
func TestRemoteTranscoder(t *testing.T) {
m := NewRemoteTranscoderManager()
initTranscoder := func() (*RemoteTranscoder, *StubTranscoderServer) {
strm := &StubTranscoderServer{manager: m}
tc := NewRemoteTranscoder(m, strm, 5, nil)
return tc, strm
}
// happy path
tc, strm := initTranscoder()
res, err := tc.Transcode(context.TODO(), &SegTranscodingMetadata{})
if err != nil || string(res.Segments[0].Data) != "asdf" {
t.Error("Error transcoding ", err)
}
// error on remote while transcoding
tc, strm = initTranscoder()
strm.TranscodeError = fmt.Errorf("TranscodeError")
res, err = tc.Transcode(context.TODO(), &SegTranscodingMetadata{})
if err != strm.TranscodeError {
t.Error("Unexpected error ", err, res)
}
// simulate error with sending
tc, strm = initTranscoder()
strm.SendError = fmt.Errorf("SendError")
_, err = tc.Transcode(context.TODO(), &SegTranscodingMetadata{})
if _, fatal := err.(RemoteTranscoderFatalError); !fatal ||
err.Error() != strm.SendError.Error() {
t.Error("Unexpected error ", err, fatal)
}
assert := assert.New(t)
// check default timeout
tc, strm = initTranscoder()
strm.WithholdResults = true
m.taskCount = 1001
oldTimeout := common.HTTPTimeout
defer func() { common.HTTPTimeout = oldTimeout }()
common.HTTPTimeout = 5 * time.Millisecond
// count relative ticks rather than wall clock to mitigate CI slowness
countTicks := func(exitVal chan int, stopper chan struct{}) {
ticker := time.NewTicker(time.Millisecond)
ticks := 0
for {
select {
case <-stopper:
exitVal <- ticks
return
case <-ticker.C:
ticks++
}
}
}
tickCh := make(chan int, 1)
stopper := make(chan struct{})
go countTicks(tickCh, stopper)
var wg sync.WaitGroup
wg.Add(1)
go func() {
_, err = tc.Transcode(context.TODO(), &SegTranscodingMetadata{ManifestID: ManifestID("fileName")})
assert.Equal("Remote transcoder took too long", err.Error())
wg.Done()
}()
assert.True(wgWait(&wg), "transcoder took too long to timeout")
stopper <- struct{}{}
ticksWhenSegIsShort := <-tickCh
// check timeout based on segment duration
tc, strm = initTranscoder()
strm.WithholdResults = true
m.taskCount = 1002
assert.Equal(5*time.Millisecond, common.HTTPTimeout) // sanity check
tickCh = make(chan int, 1)
stopper = make(chan struct{}, 1)
go countTicks(tickCh, stopper)
wg.Add(1)
go func() {
dur := 25 * time.Millisecond
_, err = tc.Transcode(context.TODO(), &SegTranscodingMetadata{Duration: dur})
assert.Equal("Remote transcoder took too long", err.Error())
wg.Done()
}()
assert.True(wgWait(&wg), "transcoder took too long to timeout")
stopper <- struct{}{}
ticksWhenSegIsLong := <-tickCh
// attempt to ensure that we didn't trigger the default timeout
assert.Greater(ticksWhenSegIsLong, ticksWhenSegIsShort*2, "not enough of a difference between default and long timeouts")
// sanity check that ticksWhenSegIsShort is also a reasonable value
assert.Greater(ticksWhenSegIsShort*25, ticksWhenSegIsLong)
}
func newWg(delta int) *sync.WaitGroup {
var wg sync.WaitGroup
wg.Add(delta)
return &wg
}
func wgWait(wg *sync.WaitGroup) bool {
c := make(chan struct{})
go func() { defer close(c); wg.Wait() }()
select {
case <-c:
return true
case <-time.After(1 * time.Second):
return false
}
}
func wgWait2(wg *sync.WaitGroup, dur time.Duration) bool {
c := make(chan struct{})
go func() { defer close(c); wg.Wait() }()
select {
case <-c:
return true
case <-time.After(dur):
return false
}
}
func TestManageTranscoders(t *testing.T) {
m := NewRemoteTranscoderManager()
strm := &StubTranscoderServer{}
strm2 := &StubTranscoderServer{manager: m}
// sanity check that liveTranscoders and remoteTranscoders is empty
assert := assert.New(t)
assert.Nil(m.liveTranscoders[strm])
assert.Nil(m.liveTranscoders[strm2])
assert.Empty(m.remoteTranscoders)
assert.Equal(0, m.RegisteredTranscodersCount())
capabilities := NewCapabilities(DefaultCapabilities(), []Capability{})
// test that transcoder is added to liveTranscoders and remoteTranscoders
wg1 := newWg(1)
go func() { m.Manage(strm, 5, capabilities.ToNetCapabilities()); wg1.Done() }()
time.Sleep(1 * time.Millisecond) // allow the manager to activate
assert.NotNil(m.liveTranscoders[strm])
assert.Len(m.liveTranscoders, 1)
assert.Len(m.remoteTranscoders, 1)
assert.Equal(1, m.RegisteredTranscodersCount())
ti := m.RegisteredTranscodersInfo()
assert.Len(ti, 1)
assert.Equal(5, ti[0].Capacity)
assert.Equal("TestAddress", ti[0].Address)
// test that additional transcoder is added to liveTranscoders and remoteTranscoders
wg2 := newWg(1)
go func() { m.Manage(strm2, 4, capabilities.ToNetCapabilities()); wg2.Done() }()
time.Sleep(1 * time.Millisecond) // allow the manager to activate
assert.NotNil(m.liveTranscoders[strm])
assert.NotNil(m.liveTranscoders[strm2])
assert.Len(m.liveTranscoders, 2)
assert.Len(m.remoteTranscoders, 2)
assert.Equal(2, m.RegisteredTranscodersCount())
// test that transcoders are removed from liveTranscoders and remoteTranscoders
m.liveTranscoders[strm].eof <- struct{}{}
assert.True(wgWait(wg1)) // time limit
assert.Nil(m.liveTranscoders[strm])
assert.NotNil(m.liveTranscoders[strm2])
assert.Len(m.liveTranscoders, 1)
assert.Len(m.remoteTranscoders, 2)
assert.Equal(1, m.RegisteredTranscodersCount())
m.liveTranscoders[strm2].eof <- struct{}{}
assert.True(wgWait(wg2)) // time limit
assert.Nil(m.liveTranscoders[strm])
assert.Nil(m.liveTranscoders[strm2])
assert.Len(m.liveTranscoders, 0)
assert.Len(m.remoteTranscoders, 2)
assert.Equal(0, m.RegisteredTranscodersCount())
}
func TestSelectTranscoder(t *testing.T) {
m := NewRemoteTranscoderManager()
strm := &StubTranscoderServer{manager: m, WithholdResults: false}
strm2 := &StubTranscoderServer{manager: m}
capabilities := NewCapabilities(DefaultCapabilities(), []Capability{})
richCapabilities := NewCapabilities(append(DefaultCapabilities(), Capability_HEVC_Encode), []Capability{})
allCapabilities := NewCapabilities(append(DefaultCapabilities(), OptionalCapabilities()...), []Capability{})
// sanity check that transcoder is not in liveTranscoders or remoteTranscoders
assert := assert.New(t)
assert.Nil(m.liveTranscoders[strm])
assert.Empty(m.remoteTranscoders)
// register transcoders, which adds transcoder to liveTranscoders and remoteTranscoders
wg := newWg(1)
go func() { m.Manage(strm, 1, capabilities.ToNetCapabilities()) }()
time.Sleep(1 * time.Millisecond) // allow time for first stream to register
go func() { m.Manage(strm2, 1, richCapabilities.ToNetCapabilities()); wg.Done() }()
time.Sleep(1 * time.Millisecond) // allow time for second stream to register
assert.NotNil(m.liveTranscoders[strm])
assert.NotNil(m.liveTranscoders[strm2])
assert.Len(m.remoteTranscoders, 2)
testSessionId := "testID"
testSessionId2 := "testID2"
testSessionId3 := "testID3"
// assert transcoder is returned from selectTranscoder
t1 := m.liveTranscoders[strm]
t2 := m.liveTranscoders[strm2]
currentTranscoder, err := m.selectTranscoder(testSessionId, nil)
assert.Nil(err)
assert.Equal(t2, currentTranscoder)
assert.Equal(1, t2.load)
assert.NotNil(m.liveTranscoders[strm])
assert.Len(m.remoteTranscoders, 2)
// assert that same transcoder is selected for same sessionId
// and that load stays the same
currentTranscoder, err = m.selectTranscoder(testSessionId, nil)
assert.Nil(err)
assert.Equal(t2, currentTranscoder)
assert.Equal(1, t2.load)
m.completeStreamSession(testSessionId)
// assert that transcoders are selected according to capabilities
currentTranscoder, err = m.selectTranscoder(testSessionId, capabilities)
assert.Nil(err)
m.completeStreamSession(testSessionId)
currentTranscoderRich, err := m.selectTranscoder(testSessionId, richCapabilities)
assert.Nil(err)
assert.NotEqual(currentTranscoder, currentTranscoderRich)
m.completeStreamSession(testSessionId)
// assert no transcoders available for unsupported capability
currentTranscoder, err = m.selectTranscoder(testSessionId, allCapabilities)
assert.NotNil(err)
m.completeStreamSession(testSessionId)
// assert that a new transcoder is selected for a new sessionId
currentTranscoder, err = m.selectTranscoder(testSessionId2, nil)
assert.Nil(err)
assert.Equal(t1, currentTranscoder)
assert.Equal(1, t1.load)
// Add some more load and assert no transcoder returned if all at capacity
currentTranscoder, err = m.selectTranscoder(testSessionId, nil)
assert.Nil(err)
assert.Equal(t2, currentTranscoder)
noTrans, err := m.selectTranscoder(testSessionId3, nil)
assert.Equal(err, ErrNoTranscodersAvailable)
assert.Nil(noTrans)
// assert that load is empty after ending stream sessions
m.completeStreamSession(testSessionId2)
assert.Equal(0, t1.load)
// unregister transcoder
t2.eof <- struct{}{}
assert.True(wgWait(wg), "Wait timed out for transcoder to terminate")
assert.Nil(m.liveTranscoders[strm2])
assert.NotNil(m.liveTranscoders[strm])
// assert t1 is selected and t2 drained, but was previously selected
currentTranscoder, err = m.selectTranscoder(testSessionId, nil)
assert.Nil(err)
assert.Equal(t1, currentTranscoder)
assert.Equal(1, t1.load)
assert.NotNil(m.liveTranscoders[strm])
assert.Len(m.remoteTranscoders, 1)
// assert transcoder gets added back to remoteTranscoders if no transcoding error
transcodedData, err := m.Transcode(context.TODO(), &SegTranscodingMetadata{AuthToken: &net.AuthToken{SessionId: testSessionId}})
assert.NotNil(transcodedData)
assert.Nil(err)
assert.Len(m.remoteTranscoders, 1)
assert.Equal(1, t1.load)
m.completeStreamSession(testSessionId)
assert.Equal(0, t1.load)
}
func TestCompleteStreamSession(t *testing.T) {
m := NewRemoteTranscoderManager()
strm := &StubTranscoderServer{manager: m}
testSessionId := "testID"
assert := assert.New(t)
capabilities := NewCapabilities(DefaultCapabilities(), []Capability{})
// register transcoders
go func() { m.Manage(strm, 1, capabilities.ToNetCapabilities()) }()
time.Sleep(1 * time.Millisecond) // allow time for first stream to register
t1 := m.liveTranscoders[strm]
// selectTranscoder and assert that session is added
m.selectTranscoder(testSessionId, nil)
assert.Equal(t1, m.streamSessions[testSessionId])
assert.Equal(1, t1.load)
// complete session and assert that it is cleared
m.completeStreamSession(testSessionId)
transcoder, ok := m.streamSessions[testSessionId]
assert.Nil(transcoder)
assert.False(ok)
assert.Equal(0, t1.load)
}
func TestRemoveFromRemoteTranscoders(t *testing.T) {
remoteTranscoderList := []*RemoteTranscoder{}
assert := assert.New(t)
// Create 6 transcoders
tr := make([]*RemoteTranscoder, 5)
for i := 0; i < 5; i++ {
tr[i] = &RemoteTranscoder{addr: "testAddress" + strconv.Itoa(i)}
}
// Add to list
remoteTranscoderList = append(remoteTranscoderList, tr...)
assert.Len(remoteTranscoderList, 5)
// Remove transcoder froms head of the list
remoteTranscoderList = removeFromRemoteTranscoders(tr[0], remoteTranscoderList)
assert.Equal(remoteTranscoderList[0], tr[1])
assert.Equal(remoteTranscoderList[1], tr[2])
assert.Equal(remoteTranscoderList[2], tr[3])
assert.Equal(remoteTranscoderList[3], tr[4])
assert.Len(remoteTranscoderList, 4)
// Remove transcoder from the middle of the list
remoteTranscoderList = removeFromRemoteTranscoders(tr[3], remoteTranscoderList)
assert.Equal(remoteTranscoderList[0], tr[1])
assert.Equal(remoteTranscoderList[1], tr[2])
assert.Equal(remoteTranscoderList[2], tr[4])
assert.Len(remoteTranscoderList, 3)
// Remove transcoder from the middle of the list
remoteTranscoderList = removeFromRemoteTranscoders(tr[2], remoteTranscoderList)
assert.Equal(remoteTranscoderList[0], tr[1])
assert.Equal(remoteTranscoderList[1], tr[4])
assert.Len(remoteTranscoderList, 2)
// Remove transcoder from the end of the list
remoteTranscoderList = removeFromRemoteTranscoders(tr[4], remoteTranscoderList)
assert.Equal(remoteTranscoderList[0], tr[1])
assert.Len(remoteTranscoderList, 1)
// Remove the last transcoder
remoteTranscoderList = removeFromRemoteTranscoders(tr[1], remoteTranscoderList)
assert.Len(remoteTranscoderList, 0)
// Remove a transcoder when list is empty
remoteTranscoderList = removeFromRemoteTranscoders(tr[1], remoteTranscoderList)
emptyTList := []*RemoteTranscoder{}
assert.Equal(remoteTranscoderList, emptyTList)
}
//Validates that selectTranscoder will shift all streams to another valid transcoder if transcoder fails.
func TestRemoveFromRemoteTranscoders_StreamFailover(t *testing.T) {
rtm := NewRemoteTranscoderManager()
assert := assert.New(t)
capabilities := NewCapabilities(append(DefaultCapabilities(), OptionalCapabilities()...), []Capability{})
var transcoder_1 = &StubTranscoderServer{manager: rtm}
var transcoder_2 = &StubTranscoderServer{manager: rtm}
assert.Nil(rtm.liveTranscoders[transcoder_1])
assert.Empty(rtm.remoteTranscoders)
// register 2 transcoders, 8 stream capacity each
go func() { rtm.Manage(transcoder_1, 8, capabilities.ToNetCapabilities()) }()
time.Sleep(1 * time.Millisecond) // allow time for first stream to register
go func() { rtm.Manage(transcoder_2, 8, capabilities.ToNetCapabilities()) }()
time.Sleep(1 * time.Millisecond) // allow time for second stream to register
//Validate two transcoders exist
assert.NotNil(rtm.liveTranscoders[transcoder_1])
assert.NotNil(rtm.liveTranscoders[transcoder_2])
assert.Len(rtm.remoteTranscoders, 2)
//Load up streams on transcoders
for i := 0; i < 8; i++ {
testSessionId := fmt.Sprintf("%s%d", "testID", i)
rtm.selectTranscoder(testSessionId, nil)
time.Sleep(1 * time.Millisecond) // allow time for second stream to register
}
t1 := rtm.liveTranscoders[transcoder_1]
t2 := rtm.liveTranscoders[transcoder_2]
//Validate 4 streams per transcoder
assert.Equal(4, t1.load)
assert.Equal(4, t2.load)
//Break connection to transcoder by deleting live transcoder map entry
rtm.RTmutex.Lock()
delete(rtm.liveTranscoders, t1.stream)
rtm.RTmutex.Unlock()
//Repeat selectTranscoder for existing session ids - will remove transcoder and shift streams to another transcoder
for i := 0; i < 8; i++ {
testSessionId := fmt.Sprintf("%s%d", "testID", i)
rtm.selectTranscoder(testSessionId, nil)
time.Sleep(1 * time.Millisecond) // allow time for second stream to register
}
t1 = rtm.liveTranscoders[transcoder_1]
t2 = rtm.liveTranscoders[transcoder_2]
//Validate all 8 streams on opposite transcoder
assert.Empty(t1)
assert.Equal(8, t2.load)
}
func TestTranscoderManagerTranscoding(t *testing.T) {
m := NewRemoteTranscoderManager()
s := &StubTranscoderServer{manager: m}
testSessionId := "testID"
capabilities := NewCapabilities(DefaultCapabilities(), []Capability{})
// sanity checks
assert := assert.New(t)
assert.Empty(m.liveTranscoders)
assert.Empty(m.remoteTranscoders)
// Attempt to transcode when no transcoders in the set
transcodedData, err := m.Transcode(context.TODO(), &SegTranscodingMetadata{AuthToken: &net.AuthToken{SessionId: testSessionId}})
assert.Nil(transcodedData)
assert.NotNil(err)
assert.Equal(err, ErrNoTranscodersAvailable)
wg := newWg(1)
go func() { m.Manage(s, 5, capabilities.ToNetCapabilities()); wg.Done() }()
time.Sleep(1 * time.Millisecond)
assert.Len(m.remoteTranscoders, 1) // sanity
assert.Len(m.liveTranscoders, 1)
assert.NotNil(m.liveTranscoders[s])
// happy path
res, err := m.Transcode(context.TODO(), &SegTranscodingMetadata{AuthToken: &net.AuthToken{SessionId: testSessionId}})
assert.Nil(err)
assert.Len(res.Segments, 1)
assert.Equal(string(res.Segments[0].Data), "asdf")
// non-fatal error should not remove from list
s.TranscodeError = fmt.Errorf("TranscodeError")
transcodedData, err = m.Transcode(context.TODO(), &SegTranscodingMetadata{AuthToken: &net.AuthToken{SessionId: testSessionId}})
assert.NotNil(transcodedData)
assert.Equal(s.TranscodeError, err)
assert.Len(m.remoteTranscoders, 1) // sanity
assert.Equal(0, m.remoteTranscoders[0].load) // sanity
assert.Len(m.liveTranscoders, 1)
assert.NotNil(m.liveTranscoders[s])
s.TranscodeError = nil
// fatal error should retry and remove from list
s.SendError = fmt.Errorf("SendError")
transcodedData, err = m.Transcode(context.TODO(), &SegTranscodingMetadata{AuthToken: &net.AuthToken{SessionId: testSessionId}})
assert.True(wgWait(wg)) // should disconnect manager
assert.Nil(transcodedData)
assert.NotNil(err)
assert.Equal(err, ErrNoTranscodersAvailable)
transcodedData, err = m.Transcode(context.TODO(), &SegTranscodingMetadata{AuthToken: &net.AuthToken{SessionId: testSessionId}}) // need second try to remove from remoteTranscoders
assert.Nil(transcodedData)
assert.NotNil(err)
assert.Equal(err, ErrNoTranscodersAvailable)
assert.Len(m.liveTranscoders, 0)
assert.Len(m.remoteTranscoders, 0) // retries drain the list
s.SendError = nil
// fatal error should not retry
wg.Add(1)
go func() { m.Manage(s, 5, capabilities.ToNetCapabilities()); wg.Done() }()
time.Sleep(1 * time.Millisecond)
assert.Len(m.remoteTranscoders, 1) // sanity check
assert.Len(m.liveTranscoders, 1)
s.WithholdResults = true
oldTimeout := common.HTTPTimeout
common.HTTPTimeout = 1 * time.Millisecond
defer func() { common.HTTPTimeout = oldTimeout }()
transcodedData, err = m.Transcode(context.TODO(), &SegTranscodingMetadata{AuthToken: &net.AuthToken{SessionId: testSessionId}})
assert.Nil(transcodedData)
_, fatal := err.(RemoteTranscoderFatalError)
wg.Wait()
assert.True(fatal)
assert.Len(m.liveTranscoders, 0)
assert.Len(m.remoteTranscoders, 1) // no retries, so don't drain
s.WithholdResults = false
}
func TestTaskChan(t *testing.T) {
n := NewRemoteTranscoderManager()
// Sanity check task ID
if n.taskCount != 0 {
t.Error("Unexpected taskid")
}
if len(n.taskChans) != int(n.taskCount) {
t.Error("Unexpected task chan length")
}
// Adding task chans
const MaxTasks = 1000
for i := 0; i < MaxTasks; i++ {
go n.addTaskChan() // hopefully concurrently...
}
for j := 0; j < 10; j++ {
n.taskMutex.RLock()
tid := n.taskCount
n.taskMutex.RUnlock()
if tid >= MaxTasks {
break
}
time.Sleep(10 * time.Millisecond)
}
if n.taskCount != MaxTasks {
t.Error("Time elapsed")
}
if len(n.taskChans) != int(n.taskCount) {
t.Error("Unexpected task chan length")
}
// Accessing task chans
existingIds := []int64{0, 1, MaxTasks / 2, MaxTasks - 2, MaxTasks - 1}
for _, id := range existingIds {
_, err := n.getTaskChan(int64(id))
if err != nil {
t.Error("Unexpected error getting task chan for ", id, err)
}
}
missingIds := []int64{-1, MaxTasks}
testNonexistentChans := func(ids []int64) {
for _, id := range ids {
_, err := n.getTaskChan(int64(id))
if err == nil || err.Error() != "No transcoder channel" {
t.Error("Did not get expected error for ", id, err)
}
}
}
testNonexistentChans(missingIds)
// Removing task chans
for i := 0; i < MaxTasks; i++ {
go n.removeTaskChan(int64(i)) // hopefully concurrently...
}
for j := 0; j < 10; j++ {
n.taskMutex.RLock()
tlen := len(n.taskChans)
n.taskMutex.RUnlock()
if tlen <= 0 {
break
}
time.Sleep(10 * time.Millisecond)
}
if len(n.taskChans) != 0 {
t.Error("Time elapsed")
}
testNonexistentChans(existingIds) // sanity check for removal
}
type StubTranscoderServer struct {
manager *RemoteTranscoderManager
SendError error
TranscodeError error
WithholdResults bool
common.StubServerStream
}
func (s *StubTranscoderServer) Send(n *net.NotifySegment) error {
res := RemoteTranscoderResult{
TranscodeData: &TranscodeData{
Segments: []*TranscodedSegmentData{
{Data: []byte("asdf")},
},
},
Err: s.TranscodeError,
}
if !s.WithholdResults {
s.manager.transcoderResults(n.TaskId, &res)
}
return s.SendError
}
func StubSegTranscodingMetadata() *SegTranscodingMetadata {
return &SegTranscodingMetadata{
ManifestID: ManifestID("abcdef"),
Seq: 1234,
Hash: ethcommon.BytesToHash(ethcommon.RightPadBytes([]byte("browns"), 32)),
Profiles: []ffmpeg.VideoProfile{ffmpeg.P144p30fps16x9, ffmpeg.P240p30fps16x9},
OS: &net.OSInfo{StorageType: net.OSInfo_DIRECT},
AuthToken: stubAuthToken(),
}
}
func TestGetSegmentChan(t *testing.T) {
n, _ := NewLivepeerNode(nil, "", nil)
segData := StubSegTranscodingMetadata()
drivers.NodeStorage = drivers.NewMemoryDriver(nil)
sc, err := n.getSegmentChan(context.TODO(), segData)
if err != nil {
t.Error("error with getSegmentChan", err)
}
if sc != n.SegmentChans[ManifestID(segData.AuthToken.SessionId)] {
t.Error("SegmentChans mapping did not include channel")
}
if cap(sc) != maxSegmentChannels {
t.Error("returned segment channel is not the correct capacity")
}
// Test max sessions
oldTranscodeSessions := MaxSessions
MaxSessions = 0
if _, err := n.getSegmentChan(context.TODO(), segData); err != nil {
t.Error("Existing mid should continue processing even when O is at capacity: ", err)
}
segData.AuthToken = stubAuthToken()
segData.AuthToken.SessionId = t.Name()
if _, err := n.getSegmentChan(context.TODO(), segData); err != ErrOrchCap {
t.Error("Didn't fail when orch cap hit: ", err)
}
MaxSessions = oldTranscodeSessions
// Test what happens when invoking the transcode loop fails
drivers.NodeStorage = nil // will make the transcode loop fail
node, _ := NewLivepeerNode(nil, "", nil)
sc, storageError := node.getSegmentChan(context.TODO(), segData)
if storageError.Error() != "Missing local storage" {
t.Error("transcodingLoop did not fail when expected to", storageError)
}
if _, ok := node.SegmentChans[segData.ManifestID]; ok {
t.Error("SegmentChans mapping included new channel when expected to return an err/nil")
}
// The following tests may seem identical to the two cases above
// however, calling `getSegmentChan` used to hang on the invocation after an
// error. Reproducing the scenario here but should not hang.
sc, storageErr := node.getSegmentChan(context.TODO(), segData)
if storageErr.Error() != "Missing local storage" {
t.Error("transcodingLoop did not fail when expected to", storageErr)
}
if _, ok := node.SegmentChans[segData.ManifestID]; ok {
t.Error("SegmentChans mapping included new channel when expected to return an err/nil")
}
}
func TestOrchCheckCapacity(t *testing.T) {
drivers.NodeStorage = drivers.NewMemoryDriver(nil)
n, _ := NewLivepeerNode(nil, "", nil)
o := NewOrchestrator(n, nil)
md := StubSegTranscodingMetadata()
cap := MaxSessions
assert := assert.New(t)
mid := ManifestID(md.AuthToken.SessionId)
// happy case
assert.Nil(o.CheckCapacity(mid))
// capped case
MaxSessions = 0
assert.Equal(ErrOrchCap, o.CheckCapacity(mid))
// ensure existing segment chans pass while cap is active
MaxSessions = cap
_, err := n.getSegmentChan(context.TODO(), md) // store md into segment chans
assert.Nil(err)
MaxSessions = 0
assert.Nil(o.CheckCapacity(mid))
}
func TestProcessPayment_GivenRecipientError_ReturnsNil(t *testing.T) {
addr := defaultRecipient
dbh, dbraw := tempDBWithOrch(t, &common.DBOrch{
EthereumAddr: addr.Hex(),
ActivationRound: 1,
DeactivationRound: 999,
})
defer dbh.Close()
defer dbraw.Close()
n, _ := NewLivepeerNode(nil, "", dbh)
n.Balances = NewAddressBalances(5 * time.Second)
recipient := new(pm.MockRecipient)
n.Recipient = recipient
rm := &stubRoundsManager{
round: big.NewInt(10),
}
orch := NewOrchestrator(n, rm)
orch.address = addr
orch.node.SetBasePrice("default", big.NewRat(0, 1))
recipient.On("TxCostMultiplier", mock.Anything).Return(big.NewRat(1, 1), nil)
recipient.On("ReceiveTicket", mock.Anything, mock.Anything, mock.Anything).Return("", false, nil)
err := orch.ProcessPayment(context.Background(), defaultPayment(t), ManifestID("some manifest"))
assert := assert.New(t)
assert.Nil(err)
}
func TestProcessPayment_GivenNoSender_ReturnsError(t *testing.T) {
n, _ := NewLivepeerNode(nil, "", nil)
recipient := new(pm.MockRecipient)
n.Recipient = recipient
orch := NewOrchestrator(n, nil)
protoPayment := defaultPayment(t)
protoPayment.Sender = nil
err := orch.ProcessPayment(context.Background(), protoPayment, ManifestID("some manifest"))
assert := assert.New(t)
assert.Error(err)
}
func TestProcessPayment_GivenNoTicketParams_ReturnsNil(t *testing.T) {
n, _ := NewLivepeerNode(nil, "", nil)
recipient := new(pm.MockRecipient)
n.Recipient = recipient
orch := NewOrchestrator(n, nil)
recipient.On("ReceiveTicket", mock.Anything, mock.Anything, mock.Anything).Return("some sessionID", false, nil)
protoPayment := defaultPayment(t)
protoPayment.TicketParams = nil
err := orch.ProcessPayment(context.Background(), protoPayment, ManifestID("some manifest"))
assert := assert.New(t)
assert.Nil(err)
}
func TestProcessPayment_GivenNilNode_ReturnsNil(t *testing.T) {
orch := &orchestrator{}
err := orch.ProcessPayment(context.Background(), defaultPayment(t), ManifestID("some manifest"))
assert.Nil(t, err)
}
func TestProcessPayment_GivenNilRecipient_ReturnsNil(t *testing.T) {
n, _ := NewLivepeerNode(nil, "", nil)
orch := NewOrchestrator(n, nil)
n.Recipient = nil
err := orch.ProcessPayment(context.Background(), defaultPayment(t), ManifestID("some manifest"))
assert.Nil(t, err)
}
func TestProcessPayment_ActiveOrchestrator(t *testing.T) {
assert := assert.New(t)
addr := defaultRecipient
dbh, dbraw := tempDBWithOrch(t, &common.DBOrch{
EthereumAddr: addr.Hex(),
ActivationRound: 1,
DeactivationRound: 1,
})
defer dbh.Close()
defer dbraw.Close()
n, _ := NewLivepeerNode(nil, "", dbh)
n.Balances = NewAddressBalances(5 * time.Second)
recipient := new(pm.MockRecipient)
n.Recipient = recipient
rm := &stubRoundsManager{
round: big.NewInt(10),
}
orch := NewOrchestrator(n, rm)
orch.address = addr
orch.node.SetBasePrice("default", big.NewRat(0, 1))
// orchestrator inactive -> error
err := orch.ProcessPayment(context.Background(), defaultPayment(t), ManifestID("some manifest"))
expErr := fmt.Sprintf("orchestrator %v is not eligible for payments in round %v, cannot process payments", addr.Hex(), 10)
assert.EqualError(err, expErr)
// orchestrator is active -> no error
dbh.UpdateOrch(&common.DBOrch{
EthereumAddr: orch.Address().Hex(),
ActivationRound: 1,
DeactivationRound: 999,
})
recipient.On("TxCostMultiplier", mock.Anything).Return(big.NewRat(1, 1), nil)
recipient.On("ReceiveTicket", mock.Anything, mock.Anything, mock.Anything).Return("some sessionID", false, nil)
err = orch.ProcessPayment(context.Background(), defaultPayment(t), ManifestID("some manifest"))
assert.NoError(err)
}
func TestProcessPayment_InvalidExpectedPrice(t *testing.T) {
assert := assert.New(t)
addr := defaultRecipient
dbh, dbraw := tempDBWithOrch(t, &common.DBOrch{
EthereumAddr: addr.Hex(),
ActivationRound: 1,
DeactivationRound: 999,
})
defer dbh.Close()
defer dbraw.Close()
n, _ := NewLivepeerNode(nil, "", dbh)
n.Recipient = new(pm.MockRecipient)
rm := &stubRoundsManager{
round: big.NewInt(10),
}
orch := NewOrchestrator(n, rm)
orch.address = addr
pay := defaultPayment(t)
// test ExpectedPrice.PixelsPerUnit = 0
pay.ExpectedPrice = &net.PriceInfo{PricePerUnit: 500, PixelsPerUnit: 0}
err := orch.ProcessPayment(context.Background(), pay, ManifestID("some manifest"))
assert.Error(err)
assert.EqualError(err, fmt.Sprintf("invalid expected price sent with payment err=%q", "pixels per unit is 0"))
// test ExpectedPrice = nil
pay.ExpectedPrice = nil
err = orch.ProcessPayment(context.Background(), pay, ManifestID("some manifest"))
assert.Error(err)
assert.EqualError(err, fmt.Sprintf("invalid expected price sent with payment err=%q", "expected price is nil"))
}
func TestProcessPayment_GivenLosingTicket_DoesNotRedeem(t *testing.T) {
addr := defaultRecipient
dbh, dbraw := tempDBWithOrch(t, &common.DBOrch{
EthereumAddr: addr.Hex(),
ActivationRound: 1,
DeactivationRound: 999,
})
defer dbh.Close()
defer dbraw.Close()
n, _ := NewLivepeerNode(nil, "", dbh)
n.Balances = NewAddressBalances(5 * time.Second)
recipient := new(pm.MockRecipient)
n.Recipient = recipient
rm := &stubRoundsManager{
round: big.NewInt(10),
}
orch := NewOrchestrator(n, rm)
orch.address = addr
orch.node.SetBasePrice("default", big.NewRat(0, 1))
recipient.On("TxCostMultiplier", mock.Anything).Return(big.NewRat(1, 1), nil)
recipient.On("ReceiveTicket", mock.Anything, mock.Anything, mock.Anything).Return("some sessionID", false, nil)
err := orch.ProcessPayment(context.Background(), defaultPayment(t), ManifestID("some manifest"))
time.Sleep(time.Millisecond * 20)
assert := assert.New(t)
assert.Nil(err)
recipient.AssertNotCalled(t, "RedeemWinningTicket", mock.Anything, mock.Anything, mock.Anything)
}
func TestProcessPayment_GivenWinningTicket_RedeemError(t *testing.T) {
addr := defaultRecipient
dbh, dbraw := tempDBWithOrch(t, &common.DBOrch{
EthereumAddr: addr.Hex(),
ActivationRound: 1,
DeactivationRound: 999,
})
defer dbh.Close()
defer dbraw.Close()
n, _ := NewLivepeerNode(nil, "", dbh)
n.Balances = NewAddressBalances(5 * time.Second)
recipient := new(pm.MockRecipient)
n.Recipient = recipient
rm := &stubRoundsManager{
round: big.NewInt(10),
}
orch := NewOrchestrator(n, rm)
orch.address = addr
orch.node.SetBasePrice("default", big.NewRat(0, 1))
manifestID := ManifestID("some manifest")
sessionID := "some sessionID"
recipient.On("TxCostMultiplier", mock.Anything).Return(big.NewRat(1, 1), nil)
recipient.On("ReceiveTicket", mock.Anything, mock.Anything, mock.Anything).Return(sessionID, true, nil)
recipient.On("RedeemWinningTicket", mock.Anything, mock.Anything, mock.Anything).Return(errors.New("RedeemWinningTicket error"))
errorLogsBefore := glog.Stats.Error.Lines()
err := orch.ProcessPayment(context.Background(), defaultPayment(t), manifestID)
time.Sleep(time.Millisecond * 20)
errorLogsAfter := glog.Stats.Error.Lines()
assert := assert.New(t)
assert.Nil(err)
assert.Equal(int64(1), errorLogsAfter-errorLogsBefore)
recipient.AssertCalled(t, "RedeemWinningTicket", mock.Anything, mock.Anything, mock.Anything)
}
func TestProcessPayment_GivenWinningTicket_Redeems(t *testing.T) {
addr := defaultRecipient
dbh, dbraw := tempDBWithOrch(t, &common.DBOrch{
EthereumAddr: addr.Hex(),
ActivationRound: 1,
DeactivationRound: 999,
})
defer dbh.Close()
defer dbraw.Close()
n, _ := NewLivepeerNode(nil, "", dbh)
n.Balances = NewAddressBalances(5 * time.Second)
recipient := new(pm.MockRecipient)
n.Recipient = recipient
rm := &stubRoundsManager{
round: big.NewInt(10),
}
orch := NewOrchestrator(n, rm)
orch.address = addr
orch.node.SetBasePrice("default", big.NewRat(0, 1))
manifestID := ManifestID("some manifest")
sessionID := "some sessionID"
recipient.On("TxCostMultiplier", mock.Anything).Return(big.NewRat(1, 1), nil)
recipient.On("ReceiveTicket", mock.Anything, mock.Anything, mock.Anything).Return(sessionID, true, nil)
recipient.On("RedeemWinningTicket", mock.Anything, mock.Anything, mock.Anything).Return(nil)
errorLogsBefore := glog.Stats.Error.Lines()
err := orch.ProcessPayment(context.Background(), defaultPayment(t), manifestID)