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package protocol
import (
"testing"
"github.com/seaweedfs/seaweedfs/weed/mq/kafka/compression"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
// TestRecordBatchParser_ParseRecordBatch tests basic record batch parsing
func TestRecordBatchParser_ParseRecordBatch(t *testing.T) {
parser := NewRecordBatchParser()
// Create a minimal valid record batch
recordData := []byte("test record data")
batch, err := CreateRecordBatch(100, recordData, compression.None)
require.NoError(t, err)
// Parse the batch
parsed, err := parser.ParseRecordBatch(batch)
require.NoError(t, err)
// Verify parsed fields
assert.Equal(t, int64(100), parsed.BaseOffset)
assert.Equal(t, int8(2), parsed.Magic)
assert.Equal(t, int32(1), parsed.RecordCount)
assert.Equal(t, compression.None, parsed.GetCompressionCodec())
assert.False(t, parsed.IsCompressed())
}
// TestRecordBatchParser_ParseRecordBatch_TooSmall tests parsing with insufficient data
func TestRecordBatchParser_ParseRecordBatch_TooSmall(t *testing.T) {
parser := NewRecordBatchParser()
// Test with data that's too small
smallData := make([]byte, 30) // Less than 61 bytes minimum
_, err := parser.ParseRecordBatch(smallData)
assert.Error(t, err)
assert.Contains(t, err.Error(), "record batch too small")
}
// TestRecordBatchParser_ParseRecordBatch_InvalidMagic tests parsing with invalid magic byte
func TestRecordBatchParser_ParseRecordBatch_InvalidMagic(t *testing.T) {
parser := NewRecordBatchParser()
// Create a batch with invalid magic byte
recordData := []byte("test record data")
batch, err := CreateRecordBatch(100, recordData, compression.None)
require.NoError(t, err)
// Corrupt the magic byte (at offset 16)
batch[16] = 1 // Invalid magic byte
// Parse should fail
_, err = parser.ParseRecordBatch(batch)
assert.Error(t, err)
assert.Contains(t, err.Error(), "unsupported record batch magic byte")
}
// TestRecordBatchParser_Compression tests compression support
func TestRecordBatchParser_Compression(t *testing.T) {
parser := NewRecordBatchParser()
recordData := []byte("This is a test record that should compress well when repeated. " +
"This is a test record that should compress well when repeated. " +
"This is a test record that should compress well when repeated.")
codecs := []compression.CompressionCodec{
compression.None,
compression.Gzip,
compression.Snappy,
compression.Lz4,
compression.Zstd,
}
for _, codec := range codecs {
t.Run(codec.String(), func(t *testing.T) {
// Create compressed batch
batch, err := CreateRecordBatch(200, recordData, codec)
require.NoError(t, err)
// Parse the batch
parsed, err := parser.ParseRecordBatch(batch)
require.NoError(t, err)
// Verify compression codec
assert.Equal(t, codec, parsed.GetCompressionCodec())
assert.Equal(t, codec != compression.None, parsed.IsCompressed())
// Decompress and verify data
decompressed, err := parsed.DecompressRecords()
require.NoError(t, err)
assert.Equal(t, recordData, decompressed)
})
}
}
// TestRecordBatchParser_CRCValidation tests CRC32 validation
func TestRecordBatchParser_CRCValidation(t *testing.T) {
parser := NewRecordBatchParser()
recordData := []byte("test record for CRC validation")
// Create a valid batch
batch, err := CreateRecordBatch(300, recordData, compression.None)
require.NoError(t, err)
t.Run("Valid CRC", func(t *testing.T) {
// Parse with CRC validation should succeed
parsed, err := parser.ParseRecordBatchWithValidation(batch, true)
require.NoError(t, err)
assert.Equal(t, int64(300), parsed.BaseOffset)
})
t.Run("Invalid CRC", func(t *testing.T) {
// Corrupt the CRC field
corruptedBatch := make([]byte, len(batch))
copy(corruptedBatch, batch)
corruptedBatch[17] = 0xFF // Corrupt CRC
// Parse with CRC validation should fail
_, err := parser.ParseRecordBatchWithValidation(corruptedBatch, true)
assert.Error(t, err)
assert.Contains(t, err.Error(), "CRC validation failed")
})
t.Run("Skip CRC validation", func(t *testing.T) {
// Corrupt the CRC field
corruptedBatch := make([]byte, len(batch))
copy(corruptedBatch, batch)
corruptedBatch[17] = 0xFF // Corrupt CRC
// Parse without CRC validation should succeed
parsed, err := parser.ParseRecordBatchWithValidation(corruptedBatch, false)
require.NoError(t, err)
assert.Equal(t, int64(300), parsed.BaseOffset)
})
}
// TestRecordBatchParser_ExtractRecords tests record extraction
func TestRecordBatchParser_ExtractRecords(t *testing.T) {
parser := NewRecordBatchParser()
recordData := []byte("test record data for extraction")
// Create a batch
batch, err := CreateRecordBatch(400, recordData, compression.Gzip)
require.NoError(t, err)
// Parse the batch
parsed, err := parser.ParseRecordBatch(batch)
require.NoError(t, err)
// Extract records
records, err := parsed.ExtractRecords()
require.NoError(t, err)
// Verify extracted records (simplified implementation returns 1 record)
assert.Len(t, records, 1)
assert.Equal(t, int64(400), records[0].Offset)
assert.Equal(t, recordData, records[0].Value)
}
// TestCompressRecordBatch tests the compression helper function
func TestCompressRecordBatch(t *testing.T) {
recordData := []byte("test data for compression")
t.Run("No compression", func(t *testing.T) {
compressed, attributes, err := CompressRecordBatch(compression.None, recordData)
require.NoError(t, err)
assert.Equal(t, recordData, compressed)
assert.Equal(t, int16(0), attributes)
})
t.Run("Gzip compression", func(t *testing.T) {
compressed, attributes, err := CompressRecordBatch(compression.Gzip, recordData)
require.NoError(t, err)
assert.NotEqual(t, recordData, compressed)
assert.Equal(t, int16(1), attributes)
// Verify we can decompress
decompressed, err := compression.Decompress(compression.Gzip, compressed)
require.NoError(t, err)
assert.Equal(t, recordData, decompressed)
})
}
// TestCreateRecordBatch tests record batch creation
func TestCreateRecordBatch(t *testing.T) {
recordData := []byte("test record data")
baseOffset := int64(500)
t.Run("Uncompressed batch", func(t *testing.T) {
batch, err := CreateRecordBatch(baseOffset, recordData, compression.None)
require.NoError(t, err)
assert.True(t, len(batch) >= 61) // Minimum header size
// Parse and verify
parser := NewRecordBatchParser()
parsed, err := parser.ParseRecordBatch(batch)
require.NoError(t, err)
assert.Equal(t, baseOffset, parsed.BaseOffset)
assert.Equal(t, compression.None, parsed.GetCompressionCodec())
})
t.Run("Compressed batch", func(t *testing.T) {
batch, err := CreateRecordBatch(baseOffset, recordData, compression.Snappy)
require.NoError(t, err)
assert.True(t, len(batch) >= 61) // Minimum header size
// Parse and verify
parser := NewRecordBatchParser()
parsed, err := parser.ParseRecordBatch(batch)
require.NoError(t, err)
assert.Equal(t, baseOffset, parsed.BaseOffset)
assert.Equal(t, compression.Snappy, parsed.GetCompressionCodec())
assert.True(t, parsed.IsCompressed())
// Verify decompression works
decompressed, err := parsed.DecompressRecords()
require.NoError(t, err)
assert.Equal(t, recordData, decompressed)
})
}
// TestRecordBatchParser_InvalidRecordCount tests handling of invalid record counts
func TestRecordBatchParser_InvalidRecordCount(t *testing.T) {
parser := NewRecordBatchParser()
// Create a valid batch first
recordData := []byte("test record data")
batch, err := CreateRecordBatch(100, recordData, compression.None)
require.NoError(t, err)
// Corrupt the record count field (at offset 57-60)
// Set to a very large number
batch[57] = 0xFF
batch[58] = 0xFF
batch[59] = 0xFF
batch[60] = 0xFF
// Parse should fail
_, err = parser.ParseRecordBatch(batch)
assert.Error(t, err)
assert.Contains(t, err.Error(), "invalid record count")
}
// BenchmarkRecordBatchParser tests parsing performance
func BenchmarkRecordBatchParser(b *testing.B) {
parser := NewRecordBatchParser()
recordData := make([]byte, 1024) // 1KB record
for i := range recordData {
recordData[i] = byte(i % 256)
}
codecs := []compression.CompressionCodec{
compression.None,
compression.Gzip,
compression.Snappy,
compression.Lz4,
compression.Zstd,
}
for _, codec := range codecs {
batch, err := CreateRecordBatch(0, recordData, codec)
if err != nil {
b.Fatal(err)
}
b.Run("Parse_"+codec.String(), func(b *testing.B) {
b.ResetTimer()
for i := 0; i < b.N; i++ {
_, err := parser.ParseRecordBatch(batch)
if err != nil {
b.Fatal(err)
}
}
})
b.Run("Decompress_"+codec.String(), func(b *testing.B) {
parsed, err := parser.ParseRecordBatch(batch)
if err != nil {
b.Fatal(err)
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
_, err := parsed.DecompressRecords()
if err != nil {
b.Fatal(err)
}
}
})
}
}
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