package filer import ( "fmt" "log" "math" "math/rand" "strconv" "testing" "github.com/stretchr/testify/assert" "github.com/chrislusf/seaweedfs/weed/pb/filer_pb" ) func TestCompactFileChunks(t *testing.T) { chunks := []*filer_pb.FileChunk{ {Offset: 10, Size: 100, FileId: "abc", Mtime: 50}, {Offset: 100, Size: 100, FileId: "def", Mtime: 100}, {Offset: 200, Size: 100, FileId: "ghi", Mtime: 200}, {Offset: 110, Size: 200, FileId: "jkl", Mtime: 300}, } compacted, garbage := CompactFileChunks(nil, chunks) if len(compacted) != 3 { t.Fatalf("unexpected compacted: %d", len(compacted)) } if len(garbage) != 1 { t.Fatalf("unexpected garbage: %d", len(garbage)) } } func TestCompactFileChunks2(t *testing.T) { chunks := []*filer_pb.FileChunk{ {Offset: 0, Size: 100, FileId: "abc", Mtime: 50}, {Offset: 100, Size: 100, FileId: "def", Mtime: 100}, {Offset: 200, Size: 100, FileId: "ghi", Mtime: 200}, {Offset: 0, Size: 100, FileId: "abcf", Mtime: 300}, {Offset: 50, Size: 100, FileId: "fhfh", Mtime: 400}, {Offset: 100, Size: 100, FileId: "yuyu", Mtime: 500}, } k := 3 for n := 0; n < k; n++ { chunks = append(chunks, &filer_pb.FileChunk{ Offset: int64(n * 100), Size: 100, FileId: fmt.Sprintf("fileId%d", n), Mtime: int64(n), }) chunks = append(chunks, &filer_pb.FileChunk{ Offset: int64(n * 50), Size: 100, FileId: fmt.Sprintf("fileId%d", n+k), Mtime: int64(n + k), }) } compacted, garbage := CompactFileChunks(nil, chunks) if len(compacted) != 4 { t.Fatalf("unexpected compacted: %d", len(compacted)) } if len(garbage) != 8 { t.Fatalf("unexpected garbage: %d", len(garbage)) } } func TestRandomFileChunksCompact(t *testing.T) { data := make([]byte, 1024) var chunks []*filer_pb.FileChunk for i := 0; i < 15; i++ { start, stop := rand.Intn(len(data)), rand.Intn(len(data)) if start > stop { start, stop = stop, start } if start+16 < stop { stop = start + 16 } chunk := &filer_pb.FileChunk{ FileId: strconv.Itoa(i), Offset: int64(start), Size: uint64(stop - start), Mtime: int64(i), Fid: &filer_pb.FileId{FileKey: uint64(i)}, } chunks = append(chunks, chunk) for x := start; x < stop; x++ { data[x] = byte(i) } } visibles, _ := NonOverlappingVisibleIntervals(nil, chunks) for _, v := range visibles { for x := v.start; x < v.stop; x++ { assert.Equal(t, strconv.Itoa(int(data[x])), v.fileId) } } } func TestIntervalMerging(t *testing.T) { testcases := []struct { Chunks []*filer_pb.FileChunk Expected []*VisibleInterval }{ // case 0: normal { Chunks: []*filer_pb.FileChunk{ {Offset: 0, Size: 100, FileId: "abc", Mtime: 123}, {Offset: 100, Size: 100, FileId: "asdf", Mtime: 134}, {Offset: 200, Size: 100, FileId: "fsad", Mtime: 353}, }, Expected: []*VisibleInterval{ {start: 0, stop: 100, fileId: "abc"}, {start: 100, stop: 200, fileId: "asdf"}, {start: 200, stop: 300, fileId: "fsad"}, }, }, // case 1: updates overwrite full chunks { Chunks: []*filer_pb.FileChunk{ {Offset: 0, Size: 100, FileId: "abc", Mtime: 123}, {Offset: 0, Size: 200, FileId: "asdf", Mtime: 134}, }, Expected: []*VisibleInterval{ {start: 0, stop: 200, fileId: "asdf"}, }, }, // case 2: updates overwrite part of previous chunks { Chunks: []*filer_pb.FileChunk{ {Offset: 0, Size: 100, FileId: "a", Mtime: 123}, {Offset: 0, Size: 70, FileId: "b", Mtime: 134}, }, Expected: []*VisibleInterval{ {start: 0, stop: 70, fileId: "b"}, {start: 70, stop: 100, fileId: "a", chunkOffset: 70}, }, }, // case 3: updates overwrite full chunks { Chunks: []*filer_pb.FileChunk{ {Offset: 0, Size: 100, FileId: "abc", Mtime: 123}, {Offset: 0, Size: 200, FileId: "asdf", Mtime: 134}, {Offset: 50, Size: 250, FileId: "xxxx", Mtime: 154}, }, Expected: []*VisibleInterval{ {start: 0, stop: 50, fileId: "asdf"}, {start: 50, stop: 300, fileId: "xxxx"}, }, }, // case 4: updates far away from prev chunks { Chunks: []*filer_pb.FileChunk{ {Offset: 0, Size: 100, FileId: "abc", Mtime: 123}, {Offset: 0, Size: 200, FileId: "asdf", Mtime: 134}, {Offset: 250, Size: 250, FileId: "xxxx", Mtime: 154}, }, Expected: []*VisibleInterval{ {start: 0, stop: 200, fileId: "asdf"}, {start: 250, stop: 500, fileId: "xxxx"}, }, }, // case 5: updates overwrite full chunks { Chunks: []*filer_pb.FileChunk{ {Offset: 0, Size: 100, FileId: "a", Mtime: 123}, {Offset: 0, Size: 200, FileId: "d", Mtime: 184}, {Offset: 70, Size: 150, FileId: "c", Mtime: 143}, {Offset: 80, Size: 100, FileId: "b", Mtime: 134}, }, Expected: []*VisibleInterval{ {start: 0, stop: 200, fileId: "d"}, {start: 200, stop: 220, fileId: "c", chunkOffset: 130}, }, }, // case 6: same updates { Chunks: []*filer_pb.FileChunk{ {Offset: 0, Size: 100, FileId: "abc", Fid: &filer_pb.FileId{FileKey: 1}, Mtime: 123}, {Offset: 0, Size: 100, FileId: "axf", Fid: &filer_pb.FileId{FileKey: 2}, Mtime: 123}, {Offset: 0, Size: 100, FileId: "xyz", Fid: &filer_pb.FileId{FileKey: 3}, Mtime: 123}, }, Expected: []*VisibleInterval{ {start: 0, stop: 100, fileId: "xyz"}, }, }, // case 7: real updates { Chunks: []*filer_pb.FileChunk{ {Offset: 0, Size: 2097152, FileId: "7,0294cbb9892b", Mtime: 123}, {Offset: 0, Size: 3145728, FileId: "3,029565bf3092", Mtime: 130}, {Offset: 2097152, Size: 3145728, FileId: "6,029632f47ae2", Mtime: 140}, {Offset: 5242880, Size: 3145728, FileId: "2,029734c5aa10", Mtime: 150}, {Offset: 8388608, Size: 3145728, FileId: "5,02982f80de50", Mtime: 160}, {Offset: 11534336, Size: 2842193, FileId: "7,0299ad723803", Mtime: 170}, }, Expected: []*VisibleInterval{ {start: 0, stop: 2097152, fileId: "3,029565bf3092"}, {start: 2097152, stop: 5242880, fileId: "6,029632f47ae2"}, {start: 5242880, stop: 8388608, fileId: "2,029734c5aa10"}, {start: 8388608, stop: 11534336, fileId: "5,02982f80de50"}, {start: 11534336, stop: 14376529, fileId: "7,0299ad723803"}, }, }, // case 8: real bug { Chunks: []*filer_pb.FileChunk{ {Offset: 0, Size: 77824, FileId: "4,0b3df938e301", Mtime: 123}, {Offset: 471040, Size: 472225 - 471040, FileId: "6,0b3e0650019c", Mtime: 130}, {Offset: 77824, Size: 208896 - 77824, FileId: "4,0b3f0c7202f0", Mtime: 140}, {Offset: 208896, Size: 339968 - 208896, FileId: "2,0b4031a72689", Mtime: 150}, {Offset: 339968, Size: 471040 - 339968, FileId: "3,0b416a557362", Mtime: 160}, }, Expected: []*VisibleInterval{ {start: 0, stop: 77824, fileId: "4,0b3df938e301"}, {start: 77824, stop: 208896, fileId: "4,0b3f0c7202f0"}, {start: 208896, stop: 339968, fileId: "2,0b4031a72689"}, {start: 339968, stop: 471040, fileId: "3,0b416a557362"}, {start: 471040, stop: 472225, fileId: "6,0b3e0650019c"}, }, }, } for i, testcase := range testcases { log.Printf("++++++++++ merged test case %d ++++++++++++++++++++", i) intervals, _ := NonOverlappingVisibleIntervals(nil, testcase.Chunks) for x, interval := range intervals { log.Printf("test case %d, interval %d, start=%d, stop=%d, fileId=%s", i, x, interval.start, interval.stop, interval.fileId) } for x, interval := range intervals { if interval.start != testcase.Expected[x].start { t.Fatalf("failed on test case %d, interval %d, start %d, expect %d", i, x, interval.start, testcase.Expected[x].start) } if interval.stop != testcase.Expected[x].stop { t.Fatalf("failed on test case %d, interval %d, stop %d, expect %d", i, x, interval.stop, testcase.Expected[x].stop) } if interval.fileId != testcase.Expected[x].fileId { t.Fatalf("failed on test case %d, interval %d, chunkId %s, expect %s", i, x, interval.fileId, testcase.Expected[x].fileId) } if interval.chunkOffset != testcase.Expected[x].chunkOffset { t.Fatalf("failed on test case %d, interval %d, chunkOffset %d, expect %d", i, x, interval.chunkOffset, testcase.Expected[x].chunkOffset) } } if len(intervals) != len(testcase.Expected) { t.Fatalf("failed to compact test case %d, len %d expected %d", i, len(intervals), len(testcase.Expected)) } } } func TestChunksReading(t *testing.T) { testcases := []struct { Chunks []*filer_pb.FileChunk Offset int64 Size int64 Expected []*ChunkView }{ // case 0: normal { Chunks: []*filer_pb.FileChunk{ {Offset: 0, Size: 100, FileId: "abc", Mtime: 123}, {Offset: 100, Size: 100, FileId: "asdf", Mtime: 134}, {Offset: 200, Size: 100, FileId: "fsad", Mtime: 353}, }, Offset: 0, Size: 250, Expected: []*ChunkView{ {Offset: 0, Size: 100, FileId: "abc", LogicOffset: 0}, {Offset: 0, Size: 100, FileId: "asdf", LogicOffset: 100}, {Offset: 0, Size: 50, FileId: "fsad", LogicOffset: 200}, }, }, // case 1: updates overwrite full chunks { Chunks: []*filer_pb.FileChunk{ {Offset: 0, Size: 100, FileId: "abc", Mtime: 123}, {Offset: 0, Size: 200, FileId: "asdf", Mtime: 134}, }, Offset: 50, Size: 100, Expected: []*ChunkView{ {Offset: 50, Size: 100, FileId: "asdf", LogicOffset: 50}, }, }, // case 2: updates overwrite part of previous chunks { Chunks: []*filer_pb.FileChunk{ {Offset: 3, Size: 100, FileId: "a", Mtime: 123}, {Offset: 10, Size: 50, FileId: "b", Mtime: 134}, }, Offset: 30, Size: 40, Expected: []*ChunkView{ {Offset: 20, Size: 30, FileId: "b", LogicOffset: 30}, {Offset: 57, Size: 10, FileId: "a", LogicOffset: 60}, }, }, // case 3: updates overwrite full chunks { Chunks: []*filer_pb.FileChunk{ {Offset: 0, Size: 100, FileId: "abc", Mtime: 123}, {Offset: 0, Size: 200, FileId: "asdf", Mtime: 134}, {Offset: 50, Size: 250, FileId: "xxxx", Mtime: 154}, }, Offset: 0, Size: 200, Expected: []*ChunkView{ {Offset: 0, Size: 50, FileId: "asdf", LogicOffset: 0}, {Offset: 0, Size: 150, FileId: "xxxx", LogicOffset: 50}, }, }, // case 4: updates far away from prev chunks { Chunks: []*filer_pb.FileChunk{ {Offset: 0, Size: 100, FileId: "abc", Mtime: 123}, {Offset: 0, Size: 200, FileId: "asdf", Mtime: 134}, {Offset: 250, Size: 250, FileId: "xxxx", Mtime: 154}, }, Offset: 0, Size: 400, Expected: []*ChunkView{ {Offset: 0, Size: 200, FileId: "asdf", LogicOffset: 0}, {Offset: 0, Size: 150, FileId: "xxxx", LogicOffset: 250}, }, }, // case 5: updates overwrite full chunks { Chunks: []*filer_pb.FileChunk{ {Offset: 0, Size: 100, FileId: "a", Mtime: 123}, {Offset: 0, Size: 200, FileId: "c", Mtime: 184}, {Offset: 70, Size: 150, FileId: "b", Mtime: 143}, {Offset: 80, Size: 100, FileId: "xxxx", Mtime: 134}, }, Offset: 0, Size: 220, Expected: []*ChunkView{ {Offset: 0, Size: 200, FileId: "c", LogicOffset: 0}, {Offset: 130, Size: 20, FileId: "b", LogicOffset: 200}, }, }, // case 6: same updates { Chunks: []*filer_pb.FileChunk{ {Offset: 0, Size: 100, FileId: "abc", Fid: &filer_pb.FileId{FileKey: 1}, Mtime: 123}, {Offset: 0, Size: 100, FileId: "def", Fid: &filer_pb.FileId{FileKey: 2}, Mtime: 123}, {Offset: 0, Size: 100, FileId: "xyz", Fid: &filer_pb.FileId{FileKey: 3}, Mtime: 123}, }, Offset: 0, Size: 100, Expected: []*ChunkView{ {Offset: 0, Size: 100, FileId: "xyz", LogicOffset: 0}, }, }, // case 7: edge cases { Chunks: []*filer_pb.FileChunk{ {Offset: 0, Size: 100, FileId: "abc", Mtime: 123}, {Offset: 100, Size: 100, FileId: "asdf", Mtime: 134}, {Offset: 200, Size: 100, FileId: "fsad", Mtime: 353}, }, Offset: 0, Size: 200, Expected: []*ChunkView{ {Offset: 0, Size: 100, FileId: "abc", LogicOffset: 0}, {Offset: 0, Size: 100, FileId: "asdf", LogicOffset: 100}, }, }, // case 8: edge cases { Chunks: []*filer_pb.FileChunk{ {Offset: 0, Size: 100, FileId: "abc", Mtime: 123}, {Offset: 90, Size: 200, FileId: "asdf", Mtime: 134}, {Offset: 190, Size: 300, FileId: "fsad", Mtime: 353}, }, Offset: 0, Size: 300, Expected: []*ChunkView{ {Offset: 0, Size: 90, FileId: "abc", LogicOffset: 0}, {Offset: 0, Size: 100, FileId: "asdf", LogicOffset: 90}, {Offset: 0, Size: 110, FileId: "fsad", LogicOffset: 190}, }, }, // case 9: edge cases { Chunks: []*filer_pb.FileChunk{ {Offset: 0, Size: 43175947, FileId: "2,111fc2cbfac1", Mtime: 1}, {Offset: 43175936, Size: 52981771 - 43175936, FileId: "2,112a36ea7f85", Mtime: 2}, {Offset: 52981760, Size: 72564747 - 52981760, FileId: "4,112d5f31c5e7", Mtime: 3}, {Offset: 72564736, Size: 133255179 - 72564736, FileId: "1,113245f0cdb6", Mtime: 4}, {Offset: 133255168, Size: 137269259 - 133255168, FileId: "3,1141a70733b5", Mtime: 5}, {Offset: 137269248, Size: 153578836 - 137269248, FileId: "1,114201d5bbdb", Mtime: 6}, }, Offset: 0, Size: 153578836, Expected: []*ChunkView{ {Offset: 0, Size: 43175936, FileId: "2,111fc2cbfac1", LogicOffset: 0}, {Offset: 0, Size: 52981760 - 43175936, FileId: "2,112a36ea7f85", LogicOffset: 43175936}, {Offset: 0, Size: 72564736 - 52981760, FileId: "4,112d5f31c5e7", LogicOffset: 52981760}, {Offset: 0, Size: 133255168 - 72564736, FileId: "1,113245f0cdb6", LogicOffset: 72564736}, {Offset: 0, Size: 137269248 - 133255168, FileId: "3,1141a70733b5", LogicOffset: 133255168}, {Offset: 0, Size: 153578836 - 137269248, FileId: "1,114201d5bbdb", LogicOffset: 137269248}, }, }, } for i, testcase := range testcases { if i != 2 { // continue } log.Printf("++++++++++ read test case %d ++++++++++++++++++++", i) chunks := ViewFromChunks(nil, testcase.Chunks, testcase.Offset, testcase.Size) for x, chunk := range chunks { log.Printf("read case %d, chunk %d, offset=%d, size=%d, fileId=%s", i, x, chunk.Offset, chunk.Size, chunk.FileId) if chunk.Offset != testcase.Expected[x].Offset { t.Fatalf("failed on read case %d, chunk %s, Offset %d, expect %d", i, chunk.FileId, chunk.Offset, testcase.Expected[x].Offset) } if chunk.Size != testcase.Expected[x].Size { t.Fatalf("failed on read case %d, chunk %s, Size %d, expect %d", i, chunk.FileId, chunk.Size, testcase.Expected[x].Size) } if chunk.FileId != testcase.Expected[x].FileId { t.Fatalf("failed on read case %d, chunk %d, FileId %s, expect %s", i, x, chunk.FileId, testcase.Expected[x].FileId) } if chunk.LogicOffset != testcase.Expected[x].LogicOffset { t.Fatalf("failed on read case %d, chunk %d, LogicOffset %d, expect %d", i, x, chunk.LogicOffset, testcase.Expected[x].LogicOffset) } } if len(chunks) != len(testcase.Expected) { t.Fatalf("failed to read test case %d, len %d expected %d", i, len(chunks), len(testcase.Expected)) } } } func BenchmarkCompactFileChunks(b *testing.B) { var chunks []*filer_pb.FileChunk k := 1024 for n := 0; n < k; n++ { chunks = append(chunks, &filer_pb.FileChunk{ Offset: int64(n * 100), Size: 100, FileId: fmt.Sprintf("fileId%d", n), Mtime: int64(n), }) chunks = append(chunks, &filer_pb.FileChunk{ Offset: int64(n * 50), Size: 100, FileId: fmt.Sprintf("fileId%d", n+k), Mtime: int64(n + k), }) } for n := 0; n < b.N; n++ { CompactFileChunks(nil, chunks) } } func TestViewFromVisibleIntervals(t *testing.T) { visibles := []VisibleInterval{ { start: 0, stop: 25, fileId: "fid1", }, { start: 4096, stop: 8192, fileId: "fid2", }, { start: 16384, stop: 18551, fileId: "fid3", }, } views := ViewFromVisibleIntervals(visibles, 0, math.MaxInt32) if len(views) != len(visibles) { assert.Equal(t, len(visibles), len(views), "ViewFromVisibleIntervals error") } } func TestViewFromVisibleIntervals2(t *testing.T) { visibles := []VisibleInterval{ { start: 344064, stop: 348160, fileId: "fid1", }, { start: 348160, stop: 356352, fileId: "fid2", }, } views := ViewFromVisibleIntervals(visibles, 0, math.MaxInt32) if len(views) != len(visibles) { assert.Equal(t, len(visibles), len(views), "ViewFromVisibleIntervals error") } } func TestViewFromVisibleIntervals3(t *testing.T) { visibles := []VisibleInterval{ { start: 1000, stop: 2000, fileId: "fid1", }, { start: 3000, stop: 4000, fileId: "fid2", }, } views := ViewFromVisibleIntervals(visibles, 1700, 1500) if len(views) != len(visibles) { assert.Equal(t, len(visibles), len(views), "ViewFromVisibleIntervals error") } }