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554 lines
15 KiB
554 lines
15 KiB
package statesync
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import (
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"io/ioutil"
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"os"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/tendermint/tendermint/p2p"
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)
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func setupChunkQueue(t *testing.T) (*chunkQueue, func()) {
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snapshot := &snapshot{
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Height: 3,
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Format: 1,
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Chunks: 5,
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Hash: []byte{7},
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Metadata: nil,
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}
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queue, err := newChunkQueue(snapshot, "")
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require.NoError(t, err)
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teardown := func() {
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err := queue.Close()
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require.NoError(t, err)
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}
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return queue, teardown
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}
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func TestNewChunkQueue_TempDir(t *testing.T) {
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snapshot := &snapshot{
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Height: 3,
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Format: 1,
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Chunks: 5,
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Hash: []byte{7},
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Metadata: nil,
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}
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dir, err := ioutil.TempDir("", "newchunkqueue")
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require.NoError(t, err)
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defer os.RemoveAll(dir)
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queue, err := newChunkQueue(snapshot, dir)
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require.NoError(t, err)
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files, err := ioutil.ReadDir(dir)
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require.NoError(t, err)
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assert.Len(t, files, 1)
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err = queue.Close()
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require.NoError(t, err)
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files, err = ioutil.ReadDir(dir)
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require.NoError(t, err)
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assert.Len(t, files, 0)
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}
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func TestChunkQueue(t *testing.T) {
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queue, teardown := setupChunkQueue(t)
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defer teardown()
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// Adding the first chunk should be fine
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added, err := queue.Add(&chunk{Height: 3, Format: 1, Index: 0, Chunk: []byte{3, 1, 0}})
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require.NoError(t, err)
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assert.True(t, added)
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// Adding the last chunk should also be fine
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added, err = queue.Add(&chunk{Height: 3, Format: 1, Index: 4, Chunk: []byte{3, 1, 4}})
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require.NoError(t, err)
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assert.True(t, added)
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// Adding the first or last chunks again should return false
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added, err = queue.Add(&chunk{Height: 3, Format: 1, Index: 0, Chunk: []byte{3, 1, 0}})
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require.NoError(t, err)
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assert.False(t, added)
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added, err = queue.Add(&chunk{Height: 3, Format: 1, Index: 4, Chunk: []byte{3, 1, 4}})
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require.NoError(t, err)
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assert.False(t, added)
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// Adding the remaining chunks in reverse should be fine
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added, err = queue.Add(&chunk{Height: 3, Format: 1, Index: 3, Chunk: []byte{3, 1, 3}})
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require.NoError(t, err)
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assert.True(t, added)
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added, err = queue.Add(&chunk{Height: 3, Format: 1, Index: 2, Chunk: []byte{3, 1, 2}})
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require.NoError(t, err)
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assert.True(t, added)
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added, err = queue.Add(&chunk{Height: 3, Format: 1, Index: 1, Chunk: []byte{3, 1, 1}})
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require.NoError(t, err)
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assert.True(t, added)
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// At this point, we should be able to retrieve them all via Next
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for i := 0; i < 5; i++ {
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c, err := queue.Next()
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require.NoError(t, err)
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assert.Equal(t, &chunk{Height: 3, Format: 1, Index: uint32(i), Chunk: []byte{3, 1, byte(i)}}, c)
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}
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_, err = queue.Next()
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require.Error(t, err)
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assert.Equal(t, errDone, err)
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// It should still be possible to try to add chunks (which will be ignored)
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added, err = queue.Add(&chunk{Height: 3, Format: 1, Index: 0, Chunk: []byte{3, 1, 0}})
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require.NoError(t, err)
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assert.False(t, added)
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// After closing the queue it will also return false
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err = queue.Close()
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require.NoError(t, err)
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added, err = queue.Add(&chunk{Height: 3, Format: 1, Index: 0, Chunk: []byte{3, 1, 0}})
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require.NoError(t, err)
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assert.False(t, added)
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// Closing the queue again should also be fine
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err = queue.Close()
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require.NoError(t, err)
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}
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func TestChunkQueue_Add_ChunkErrors(t *testing.T) {
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testcases := map[string]struct {
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chunk *chunk
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}{
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"nil chunk": {nil},
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"nil body": {&chunk{Height: 3, Format: 1, Index: 0, Chunk: nil}},
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"wrong height": {&chunk{Height: 9, Format: 1, Index: 0, Chunk: []byte{3, 1, 0}}},
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"wrong format": {&chunk{Height: 3, Format: 9, Index: 0, Chunk: []byte{3, 1, 0}}},
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"invalid index": {&chunk{Height: 3, Format: 1, Index: 5, Chunk: []byte{3, 1, 0}}},
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}
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for name, tc := range testcases {
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tc := tc
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t.Run(name, func(t *testing.T) {
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queue, teardown := setupChunkQueue(t)
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defer teardown()
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_, err := queue.Add(tc.chunk)
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require.Error(t, err)
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})
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}
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}
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func TestChunkQueue_Allocate(t *testing.T) {
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queue, teardown := setupChunkQueue(t)
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defer teardown()
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for i := uint32(0); i < queue.Size(); i++ {
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index, err := queue.Allocate()
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require.NoError(t, err)
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assert.EqualValues(t, i, index)
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}
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_, err := queue.Allocate()
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require.Error(t, err)
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assert.Equal(t, errDone, err)
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for i := uint32(0); i < queue.Size(); i++ {
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_, err = queue.Add(&chunk{Height: 3, Format: 1, Index: i, Chunk: []byte{byte(i)}})
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require.NoError(t, err)
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}
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// After all chunks have been allocated and retrieved, discarding a chunk will reallocate it.
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err = queue.Discard(2)
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require.NoError(t, err)
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index, err := queue.Allocate()
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require.NoError(t, err)
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assert.EqualValues(t, 2, index)
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_, err = queue.Allocate()
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require.Error(t, err)
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assert.Equal(t, errDone, err)
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// Discarding a chunk the closing the queue will return errDone.
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err = queue.Discard(2)
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require.NoError(t, err)
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err = queue.Close()
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require.NoError(t, err)
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_, err = queue.Allocate()
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require.Error(t, err)
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assert.Equal(t, errDone, err)
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}
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func TestChunkQueue_Discard(t *testing.T) {
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queue, teardown := setupChunkQueue(t)
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defer teardown()
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// Add a few chunks to the queue and fetch a couple
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_, err := queue.Add(&chunk{Height: 3, Format: 1, Index: 0, Chunk: []byte{byte(0)}})
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require.NoError(t, err)
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_, err = queue.Add(&chunk{Height: 3, Format: 1, Index: 1, Chunk: []byte{byte(1)}})
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require.NoError(t, err)
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_, err = queue.Add(&chunk{Height: 3, Format: 1, Index: 2, Chunk: []byte{byte(2)}})
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require.NoError(t, err)
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c, err := queue.Next()
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require.NoError(t, err)
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assert.EqualValues(t, 0, c.Index)
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c, err = queue.Next()
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require.NoError(t, err)
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assert.EqualValues(t, 1, c.Index)
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// Discarding the first chunk and re-adding it should cause it to be returned
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// immediately by Next(), before procceeding with chunk 2
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err = queue.Discard(0)
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require.NoError(t, err)
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added, err := queue.Add(&chunk{Height: 3, Format: 1, Index: 0, Chunk: []byte{byte(0)}})
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require.NoError(t, err)
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assert.True(t, added)
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c, err = queue.Next()
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require.NoError(t, err)
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assert.EqualValues(t, 0, c.Index)
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c, err = queue.Next()
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require.NoError(t, err)
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assert.EqualValues(t, 2, c.Index)
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// Discard then allocate, add and fetch all chunks
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for i := uint32(0); i < queue.Size(); i++ {
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err := queue.Discard(i)
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require.NoError(t, err)
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}
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for i := uint32(0); i < queue.Size(); i++ {
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_, err := queue.Allocate()
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require.NoError(t, err)
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_, err = queue.Add(&chunk{Height: 3, Format: 1, Index: i, Chunk: []byte{byte(i)}})
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require.NoError(t, err)
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c, err = queue.Next()
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require.NoError(t, err)
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assert.EqualValues(t, i, c.Index)
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}
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// Discarding a non-existent chunk does nothing.
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err = queue.Discard(99)
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require.NoError(t, err)
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// When discard a couple of chunks, we should be able to allocate, add, and fetch them again.
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err = queue.Discard(3)
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require.NoError(t, err)
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err = queue.Discard(1)
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require.NoError(t, err)
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index, err := queue.Allocate()
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require.NoError(t, err)
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assert.EqualValues(t, 1, index)
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index, err = queue.Allocate()
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require.NoError(t, err)
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assert.EqualValues(t, 3, index)
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added, err = queue.Add(&chunk{Height: 3, Format: 1, Index: 3, Chunk: []byte{3}})
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require.NoError(t, err)
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assert.True(t, added)
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added, err = queue.Add(&chunk{Height: 3, Format: 1, Index: 1, Chunk: []byte{1}})
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require.NoError(t, err)
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assert.True(t, added)
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chunk, err := queue.Next()
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require.NoError(t, err)
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assert.EqualValues(t, 1, chunk.Index)
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chunk, err = queue.Next()
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require.NoError(t, err)
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assert.EqualValues(t, 3, chunk.Index)
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_, err = queue.Next()
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require.Error(t, err)
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assert.Equal(t, errDone, err)
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// After closing the queue, discarding does nothing
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err = queue.Close()
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require.NoError(t, err)
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err = queue.Discard(2)
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require.NoError(t, err)
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}
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func TestChunkQueue_DiscardSender(t *testing.T) {
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queue, teardown := setupChunkQueue(t)
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defer teardown()
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// Allocate and add all chunks to the queue
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senders := []p2p.PeerID{p2p.PeerID("a"), p2p.PeerID("b"), p2p.PeerID("c")}
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for i := uint32(0); i < queue.Size(); i++ {
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_, err := queue.Allocate()
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require.NoError(t, err)
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_, err = queue.Add(&chunk{
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Height: 3,
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Format: 1,
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Index: i,
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Chunk: []byte{byte(i)},
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Sender: senders[int(i)%len(senders)],
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})
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require.NoError(t, err)
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}
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// Fetch the first three chunks
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for i := uint32(0); i < 3; i++ {
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_, err := queue.Next()
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require.NoError(t, err)
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}
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// Discarding an unknown sender should do nothing
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err := queue.DiscardSender(p2p.PeerID("x"))
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require.NoError(t, err)
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_, err = queue.Allocate()
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assert.Equal(t, errDone, err)
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// Discarding sender b should discard chunk 4, but not chunk 1 which has already been
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// returned.
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err = queue.DiscardSender(p2p.PeerID("b"))
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require.NoError(t, err)
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index, err := queue.Allocate()
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require.NoError(t, err)
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assert.EqualValues(t, 4, index)
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_, err = queue.Allocate()
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assert.Equal(t, errDone, err)
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}
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func TestChunkQueue_GetSender(t *testing.T) {
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queue, teardown := setupChunkQueue(t)
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defer teardown()
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peerAID := p2p.PeerID{0xaa}
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peerBID := p2p.PeerID{0xbb}
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_, err := queue.Add(&chunk{Height: 3, Format: 1, Index: 0, Chunk: []byte{1}, Sender: peerAID})
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require.NoError(t, err)
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_, err = queue.Add(&chunk{Height: 3, Format: 1, Index: 1, Chunk: []byte{2}, Sender: peerBID})
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require.NoError(t, err)
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assert.Equal(t, "aa", queue.GetSender(0).String())
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assert.Equal(t, "bb", queue.GetSender(1).String())
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assert.Equal(t, "", queue.GetSender(2).String())
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// After the chunk has been processed, we should still know who the sender was
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chunk, err := queue.Next()
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require.NoError(t, err)
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require.NotNil(t, chunk)
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require.EqualValues(t, 0, chunk.Index)
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assert.Equal(t, "aa", queue.GetSender(0).String())
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}
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func TestChunkQueue_Next(t *testing.T) {
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queue, teardown := setupChunkQueue(t)
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defer teardown()
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// Next should block waiting for the next chunks, even when given out of order.
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chNext := make(chan *chunk, 10)
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go func() {
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for {
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c, err := queue.Next()
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if err == errDone {
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close(chNext)
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break
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}
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require.NoError(t, err)
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chNext <- c
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}
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}()
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assert.Empty(t, chNext)
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_, err := queue.Add(&chunk{Height: 3, Format: 1, Index: 1, Chunk: []byte{3, 1, 1}, Sender: p2p.PeerID("b")})
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require.NoError(t, err)
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select {
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case <-chNext:
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assert.Fail(t, "channel should be empty")
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default:
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}
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_, err = queue.Add(&chunk{Height: 3, Format: 1, Index: 0, Chunk: []byte{3, 1, 0}, Sender: p2p.PeerID("a")})
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require.NoError(t, err)
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assert.Equal(t,
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&chunk{Height: 3, Format: 1, Index: 0, Chunk: []byte{3, 1, 0}, Sender: p2p.PeerID("a")},
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<-chNext)
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assert.Equal(t,
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&chunk{Height: 3, Format: 1, Index: 1, Chunk: []byte{3, 1, 1}, Sender: p2p.PeerID("b")},
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<-chNext)
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_, err = queue.Add(&chunk{Height: 3, Format: 1, Index: 4, Chunk: []byte{3, 1, 4}, Sender: p2p.PeerID("e")})
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require.NoError(t, err)
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select {
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case <-chNext:
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assert.Fail(t, "channel should be empty")
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default:
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}
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_, err = queue.Add(&chunk{Height: 3, Format: 1, Index: 2, Chunk: []byte{3, 1, 2}, Sender: p2p.PeerID("c")})
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require.NoError(t, err)
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_, err = queue.Add(&chunk{Height: 3, Format: 1, Index: 3, Chunk: []byte{3, 1, 3}, Sender: p2p.PeerID("d")})
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require.NoError(t, err)
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assert.Equal(t,
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&chunk{Height: 3, Format: 1, Index: 2, Chunk: []byte{3, 1, 2}, Sender: p2p.PeerID("c")},
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<-chNext)
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assert.Equal(t,
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&chunk{Height: 3, Format: 1, Index: 3, Chunk: []byte{3, 1, 3}, Sender: p2p.PeerID("d")},
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<-chNext)
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assert.Equal(t,
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&chunk{Height: 3, Format: 1, Index: 4, Chunk: []byte{3, 1, 4}, Sender: p2p.PeerID("e")},
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<-chNext)
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_, ok := <-chNext
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assert.False(t, ok, "channel should be closed")
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// Calling next on a finished queue should return done
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_, err = queue.Next()
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assert.Equal(t, errDone, err)
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}
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func TestChunkQueue_Next_Closed(t *testing.T) {
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queue, teardown := setupChunkQueue(t)
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defer teardown()
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// Calling Next on a closed queue should return done
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_, err := queue.Add(&chunk{Height: 3, Format: 1, Index: 1, Chunk: []byte{3, 1, 1}})
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require.NoError(t, err)
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err = queue.Close()
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require.NoError(t, err)
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_, err = queue.Next()
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assert.Equal(t, errDone, err)
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}
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func TestChunkQueue_Retry(t *testing.T) {
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queue, teardown := setupChunkQueue(t)
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defer teardown()
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// Allocate and add all chunks to the queue
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for i := uint32(0); i < queue.Size(); i++ {
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_, err := queue.Allocate()
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require.NoError(t, err)
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_, err = queue.Add(&chunk{Height: 3, Format: 1, Index: i, Chunk: []byte{byte(i)}})
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require.NoError(t, err)
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_, err = queue.Next()
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require.NoError(t, err)
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}
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// Retrying a couple of chunks makes Next() return them, but they are not allocatable
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queue.Retry(3)
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queue.Retry(1)
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_, err := queue.Allocate()
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assert.Equal(t, errDone, err)
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chunk, err := queue.Next()
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require.NoError(t, err)
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assert.EqualValues(t, 1, chunk.Index)
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chunk, err = queue.Next()
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require.NoError(t, err)
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assert.EqualValues(t, 3, chunk.Index)
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_, err = queue.Next()
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assert.Equal(t, errDone, err)
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}
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func TestChunkQueue_RetryAll(t *testing.T) {
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queue, teardown := setupChunkQueue(t)
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defer teardown()
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// Allocate and add all chunks to the queue
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for i := uint32(0); i < queue.Size(); i++ {
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_, err := queue.Allocate()
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require.NoError(t, err)
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_, err = queue.Add(&chunk{Height: 3, Format: 1, Index: i, Chunk: []byte{byte(i)}})
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require.NoError(t, err)
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_, err = queue.Next()
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require.NoError(t, err)
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}
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_, err := queue.Next()
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assert.Equal(t, errDone, err)
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queue.RetryAll()
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_, err = queue.Allocate()
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assert.Equal(t, errDone, err)
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for i := uint32(0); i < queue.Size(); i++ {
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chunk, err := queue.Next()
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require.NoError(t, err)
|
|
assert.EqualValues(t, i, chunk.Index)
|
|
}
|
|
|
|
_, err = queue.Next()
|
|
assert.Equal(t, errDone, err)
|
|
}
|
|
|
|
func TestChunkQueue_Size(t *testing.T) {
|
|
queue, teardown := setupChunkQueue(t)
|
|
defer teardown()
|
|
|
|
assert.EqualValues(t, 5, queue.Size())
|
|
|
|
err := queue.Close()
|
|
require.NoError(t, err)
|
|
assert.EqualValues(t, 0, queue.Size())
|
|
}
|
|
|
|
func TestChunkQueue_WaitFor(t *testing.T) {
|
|
queue, teardown := setupChunkQueue(t)
|
|
defer teardown()
|
|
|
|
waitFor1 := queue.WaitFor(1)
|
|
waitFor4 := queue.WaitFor(4)
|
|
|
|
// Adding 0 and 2 should not trigger waiters
|
|
_, err := queue.Add(&chunk{Height: 3, Format: 1, Index: 0, Chunk: []byte{3, 1, 0}})
|
|
require.NoError(t, err)
|
|
_, err = queue.Add(&chunk{Height: 3, Format: 1, Index: 2, Chunk: []byte{3, 1, 2}})
|
|
require.NoError(t, err)
|
|
select {
|
|
case <-waitFor1:
|
|
require.Fail(t, "WaitFor(1) should not trigger on 0 or 2")
|
|
case <-waitFor4:
|
|
require.Fail(t, "WaitFor(4) should not trigger on 0 or 2")
|
|
default:
|
|
}
|
|
|
|
// Adding 1 should trigger WaitFor(1), but not WaitFor(4). The channel should be closed.
|
|
_, err = queue.Add(&chunk{Height: 3, Format: 1, Index: 1, Chunk: []byte{3, 1, 1}})
|
|
require.NoError(t, err)
|
|
assert.EqualValues(t, 1, <-waitFor1)
|
|
_, ok := <-waitFor1
|
|
assert.False(t, ok)
|
|
select {
|
|
case <-waitFor4:
|
|
require.Fail(t, "WaitFor(4) should not trigger on 0 or 2")
|
|
default:
|
|
}
|
|
|
|
// Fetch the first chunk. At this point, waiting for either 0 (retrieved from pool) or 1
|
|
// (queued in pool) should immediately return true.
|
|
c, err := queue.Next()
|
|
require.NoError(t, err)
|
|
assert.EqualValues(t, 0, c.Index)
|
|
|
|
w := queue.WaitFor(0)
|
|
assert.EqualValues(t, 0, <-w)
|
|
_, ok = <-w
|
|
assert.False(t, ok)
|
|
|
|
w = queue.WaitFor(1)
|
|
assert.EqualValues(t, 1, <-w)
|
|
_, ok = <-w
|
|
assert.False(t, ok)
|
|
|
|
// Close the queue. This should cause the waiter for 4 to close, and also cause any future
|
|
// waiters to get closed channels.
|
|
err = queue.Close()
|
|
require.NoError(t, err)
|
|
_, ok = <-waitFor4
|
|
assert.False(t, ok)
|
|
|
|
w = queue.WaitFor(3)
|
|
_, ok = <-w
|
|
assert.False(t, ok)
|
|
}
|