258 lines
7.9 KiB
Go
258 lines
7.9 KiB
Go
package test
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import (
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"fmt"
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"io"
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"os"
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"runtime"
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"testing"
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"testing/iotest"
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"github.com/anacrolix/missinggo/v2/bitmap"
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"github.com/frankban/quicktest"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"golang.org/x/time/rate"
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"github.com/anacrolix/torrent"
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"github.com/anacrolix/torrent/internal/testutil"
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"github.com/anacrolix/torrent/storage"
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)
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type LeecherStorageTestCase struct {
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Name string
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Factory StorageFactory
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GoMaxProcs int
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}
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type StorageFactory func(string) storage.ClientImplCloser
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func TestLeecherStorage(t *testing.T, ls LeecherStorageTestCase) {
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// Seeder storage
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for _, ss := range []struct {
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name string
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f StorageFactory
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}{
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{"File", storage.NewFile},
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{"Mmap", storage.NewMMap},
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} {
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t.Run(fmt.Sprintf("%sSeederStorage", ss.name), func(t *testing.T) {
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for _, responsive := range []bool{false, true} {
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t.Run(fmt.Sprintf("Responsive=%v", responsive), func(t *testing.T) {
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t.Run("NoReadahead", func(t *testing.T) {
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testClientTransfer(t, testClientTransferParams{
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Responsive: responsive,
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SeederStorage: ss.f,
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LeecherStorage: ls.Factory,
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GOMAXPROCS: ls.GoMaxProcs,
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})
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})
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for _, readahead := range []int64{-1, 0, 1, 2, 9, 20} {
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t.Run(fmt.Sprintf("readahead=%v", readahead), func(t *testing.T) {
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testClientTransfer(t, testClientTransferParams{
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SeederStorage: ss.f,
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Responsive: responsive,
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SetReadahead: true,
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Readahead: readahead,
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LeecherStorage: ls.Factory,
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GOMAXPROCS: ls.GoMaxProcs,
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})
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})
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}
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})
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}
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})
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}
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}
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type ConfigureClient struct {
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Config func(cfg *torrent.ClientConfig)
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Client func(cl *torrent.Client)
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}
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type testClientTransferParams struct {
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Responsive bool
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Readahead int64
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SetReadahead bool
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LeecherStorage func(string) storage.ClientImplCloser
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// TODO: Use a generic option type. This is the capacity of the leecher storage for determining
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// whether it's possible for the leecher to be Complete. 0 currently means no limit.
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LeecherStorageCapacity int64
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SeederStorage func(string) storage.ClientImplCloser
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SeederUploadRateLimiter *rate.Limiter
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LeecherDownloadRateLimiter *rate.Limiter
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ConfigureSeeder ConfigureClient
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ConfigureLeecher ConfigureClient
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GOMAXPROCS int
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LeecherStartsWithoutMetadata bool
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}
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// Creates a seeder and a leecher, and ensures the data transfers when a read
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// is attempted on the leecher.
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func testClientTransfer(t *testing.T, ps testClientTransferParams) {
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t.Parallel()
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prevGOMAXPROCS := runtime.GOMAXPROCS(ps.GOMAXPROCS)
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newGOMAXPROCS := prevGOMAXPROCS
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if ps.GOMAXPROCS > 0 {
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newGOMAXPROCS = ps.GOMAXPROCS
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}
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defer func() {
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quicktest.Check(t, runtime.GOMAXPROCS(prevGOMAXPROCS), quicktest.ContentEquals, newGOMAXPROCS)
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}()
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greetingTempDir, mi := testutil.GreetingTestTorrent()
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defer os.RemoveAll(greetingTempDir)
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// Create seeder and a Torrent.
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cfg := torrent.TestingConfig(t)
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// cfg.Debug = true
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cfg.Seed = true
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// Less than a piece, more than a single request.
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cfg.MaxAllocPeerRequestDataPerConn = 4
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// Some test instances don't like this being on, even when there's no cache involved.
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cfg.DropMutuallyCompletePeers = false
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if ps.SeederUploadRateLimiter != nil {
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cfg.UploadRateLimiter = ps.SeederUploadRateLimiter
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}
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// cfg.ListenAddr = "localhost:4000"
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if ps.SeederStorage != nil {
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storage := ps.SeederStorage(greetingTempDir)
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defer storage.Close()
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cfg.DefaultStorage = storage
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} else {
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cfg.DataDir = greetingTempDir
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}
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if ps.ConfigureSeeder.Config != nil {
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ps.ConfigureSeeder.Config(cfg)
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}
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seeder, err := torrent.NewClient(cfg)
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require.NoError(t, err)
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if ps.ConfigureSeeder.Client != nil {
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ps.ConfigureSeeder.Client(seeder)
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}
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defer testutil.ExportStatusWriter(seeder, "s", t)()
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seederTorrent, _, _ := seeder.AddTorrentSpec(torrent.TorrentSpecFromMetaInfo(mi))
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// Run a Stats right after Closing the Client. This will trigger the Stats
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// panic in #214 caused by RemoteAddr on Closed uTP sockets.
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defer seederTorrent.Stats()
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defer seeder.Close()
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// Adding a torrent and setting the info should trigger piece checks for everything
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// automatically. Wait until the seed Torrent agrees that everything is available.
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<-seederTorrent.Complete.On()
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// Create leecher and a Torrent.
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leecherDataDir := t.TempDir()
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cfg = torrent.TestingConfig(t)
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// See the seeder client config comment.
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cfg.DropMutuallyCompletePeers = false
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if ps.LeecherStorage == nil {
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cfg.DataDir = leecherDataDir
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} else {
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storage := ps.LeecherStorage(leecherDataDir)
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defer storage.Close()
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cfg.DefaultStorage = storage
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}
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if ps.LeecherDownloadRateLimiter != nil {
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cfg.DownloadRateLimiter = ps.LeecherDownloadRateLimiter
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}
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cfg.Seed = false
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// cfg.Debug = true
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if ps.ConfigureLeecher.Config != nil {
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ps.ConfigureLeecher.Config(cfg)
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}
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leecher, err := torrent.NewClient(cfg)
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require.NoError(t, err)
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defer leecher.Close()
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if ps.ConfigureLeecher.Client != nil {
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ps.ConfigureLeecher.Client(leecher)
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}
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defer testutil.ExportStatusWriter(leecher, "l", t)()
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leecherTorrent, new, err := leecher.AddTorrentSpec(func() (ret *torrent.TorrentSpec) {
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ret = torrent.TorrentSpecFromMetaInfo(mi)
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ret.ChunkSize = 2
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if ps.LeecherStartsWithoutMetadata {
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ret.InfoBytes = nil
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}
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return
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}())
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require.NoError(t, err)
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assert.False(t, leecherTorrent.Complete.Bool())
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assert.True(t, new)
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//// This was used when observing coalescing of piece state changes.
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//logPieceStateChanges(leecherTorrent)
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// Now do some things with leecher and seeder.
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added := leecherTorrent.AddClientPeer(seeder)
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assert.False(t, leecherTorrent.Seeding())
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// The leecher will use peers immediately if it doesn't have the metadata. Otherwise, they
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// should be sitting idle until we demand data.
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if !ps.LeecherStartsWithoutMetadata {
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assert.EqualValues(t, added, leecherTorrent.Stats().PendingPeers)
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}
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if ps.LeecherStartsWithoutMetadata {
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<-leecherTorrent.GotInfo()
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}
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r := leecherTorrent.NewReader()
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defer r.Close()
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go leecherTorrent.SetInfoBytes(mi.InfoBytes)
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if ps.Responsive {
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r.SetResponsive()
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}
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if ps.SetReadahead {
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r.SetReadahead(ps.Readahead)
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}
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assertReadAllGreeting(t, r)
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info, err := mi.UnmarshalInfo()
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require.NoError(t, err)
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canComplete := ps.LeecherStorageCapacity == 0 || ps.LeecherStorageCapacity >= info.TotalLength()
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if !canComplete {
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// Reading from a cache doesn't refresh older pieces until we fail to read those, so we need
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// to force a refresh since we just read the contents from start to finish.
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go leecherTorrent.VerifyData()
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}
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if canComplete {
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<-leecherTorrent.Complete.On()
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} else {
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<-leecherTorrent.Complete.Off()
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}
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assert.NotEmpty(t, seederTorrent.PeerConns())
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leecherPeerConns := leecherTorrent.PeerConns()
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if cfg.DropMutuallyCompletePeers {
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// I don't think we can assume it will be empty already, due to timing.
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// assert.Empty(t, leecherPeerConns)
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} else {
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assert.NotEmpty(t, leecherPeerConns)
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}
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foundSeeder := false
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for _, pc := range leecherPeerConns {
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completed := pc.PeerPieces().GetCardinality()
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t.Logf("peer conn %v has %v completed pieces", pc, completed)
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if completed == bitmap.BitRange(leecherTorrent.Info().NumPieces()) {
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foundSeeder = true
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}
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}
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if !foundSeeder {
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t.Errorf("didn't find seeder amongst leecher peer conns")
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}
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seederStats := seederTorrent.Stats()
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assert.True(t, 13 <= seederStats.BytesWrittenData.Int64())
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assert.True(t, 8 <= seederStats.ChunksWritten.Int64())
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leecherStats := leecherTorrent.Stats()
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assert.True(t, 13 <= leecherStats.BytesReadData.Int64())
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assert.True(t, 8 <= leecherStats.ChunksRead.Int64())
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// Try reading through again for the cases where the torrent data size
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// exceeds the size of the cache.
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assertReadAllGreeting(t, r)
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}
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func assertReadAllGreeting(t *testing.T, r io.ReadSeeker) {
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pos, err := r.Seek(0, io.SeekStart)
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assert.NoError(t, err)
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assert.EqualValues(t, 0, pos)
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quicktest.Check(t, iotest.TestReader(r, []byte(testutil.GreetingFileContents)), quicktest.IsNil)
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}
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