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159 lines
4.8 KiB
159 lines
4.8 KiB
package needle
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import (
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"bytes"
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"os"
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"testing"
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"time"
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"github.com/seaweedfs/seaweedfs/weed/storage/backend"
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"github.com/seaweedfs/seaweedfs/weed/storage/types"
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)
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func TestAppend(t *testing.T) {
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n := &Needle{
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Cookie: types.Cookie(123), // Cookie Cookie `comment:"random number to mitigate brute force lookups"`
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Id: types.NeedleId(123), // Id NeedleId `comment:"needle id"`
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Size: 8, // Size uint32 `comment:"sum of DataSize,Data,NameSize,Name,MimeSize,Mime"`
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DataSize: 4, // DataSize uint32 `comment:"Data size"` //version2
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Data: []byte("abcd"), // Data []byte `comment:"The actual file data"`
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Flags: 0, // Flags byte `comment:"boolean flags"` //version2
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NameSize: 0, // NameSize uint8 //version2
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Name: nil, // Name []byte `comment:"maximum 256 characters"` //version2
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MimeSize: 0, // MimeSize uint8 //version2
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Mime: nil, // Mime []byte `comment:"maximum 256 characters"` //version2
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PairsSize: 0, // PairsSize uint16 //version2
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Pairs: nil, // Pairs []byte `comment:"additional name value pairs, json format, maximum 6
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LastModified: 123, // LastModified uint64 //only store LastModifiedBytesLength bytes, which is 5 bytes
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Ttl: nil, // Ttl *TTL
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Checksum: 123, // Checksum CRC `comment:"CRC32 to check integrity"`
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AppendAtNs: 123, // AppendAtNs uint64 `comment:"append timestamp in nano seconds"` //version3
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Padding: nil, // Padding []byte `comment:"Aligned to 8 bytes"`
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}
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tempFile, err := os.CreateTemp("", ".dat")
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if err != nil {
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t.Errorf("Fail TempFile. %v", err)
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return
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}
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/*
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uint8 : 0 to 255
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uint16 : 0 to 65535
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uint32 : 0 to 4294967295
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uint64 : 0 to 18446744073709551615
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int8 : -128 to 127
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int16 : -32768 to 32767
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int32 : -2147483648 to 2147483647
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int64 : -9223372036854775808 to 9223372036854775807
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*/
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fileSize := int64(4294967296) + 10000
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tempFile.Truncate(fileSize)
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defer func() {
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tempFile.Close()
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os.Remove(tempFile.Name())
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}()
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datBackend := backend.NewDiskFile(tempFile)
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defer datBackend.Close()
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offset, _, _, _ := n.Append(datBackend, CurrentVersion)
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if offset != uint64(fileSize) {
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t.Errorf("Fail to Append Needle.")
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}
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}
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func versionString(v Version) string {
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switch v {
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case Version1:
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return "Version1"
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case Version2:
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return "Version2"
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case Version3:
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return "Version3"
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default:
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return "UnknownVersion"
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}
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}
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func TestWriteNeedle_CompatibilityWithLegacy(t *testing.T) {
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versions := []Version{Version1, Version2, Version3}
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for _, version := range versions {
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t.Run(versionString(version), func(t *testing.T) {
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n := &Needle{
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Cookie: 0x12345678,
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Id: 0x1122334455667788,
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Data: []byte("hello world"),
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Flags: 0xFF,
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Name: []byte("filename.txt"),
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Mime: []byte("text/plain"),
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LastModified: 0x1234567890,
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Ttl: nil, // Add TTL if needed
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Pairs: []byte("key=value"),
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PairsSize: 9,
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Checksum: 0xCAFEBABE,
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AppendAtNs: 0xDEADBEEF,
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}
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// Legacy
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legacyBuf := &bytes.Buffer{}
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_, _, err := n.LegacyPrepareWriteBuffer(version, legacyBuf)
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if err != nil {
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t.Fatalf("LegacyPrepareWriteBuffer failed: %v", err)
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}
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// New
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newBuf := &bytes.Buffer{}
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switch version {
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case Version1:
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_, _, _, err = writeNeedleV1(&mockBackendWriter{buf: newBuf}, n)
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case Version2:
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_, _, _, err = writeNeedleV2(&mockBackendWriter{buf: newBuf}, n)
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case Version3:
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_, _, _, err = writeNeedleV3(&mockBackendWriter{buf: newBuf}, n)
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}
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if err != nil {
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t.Fatalf("writeNeedleV%d failed: %v", version, err)
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}
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if !bytes.Equal(legacyBuf.Bytes(), newBuf.Bytes()) {
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t.Errorf("Data layout mismatch for version %d\nLegacy: %x\nNew: %x", version, legacyBuf.Bytes(), newBuf.Bytes())
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}
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})
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}
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}
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type mockBackendWriter struct {
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buf *bytes.Buffer
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}
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func (m *mockBackendWriter) WriteAt(p []byte, off int64) (n int, err error) {
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return m.buf.Write(p)
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}
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func (m *mockBackendWriter) GetStat() (int64, time.Time, error) {
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return 0, time.Time{}, nil
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}
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func (m *mockBackendWriter) Truncate(size int64) error {
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return nil
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}
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func (m *mockBackendWriter) Name() string {
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return "mock"
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}
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func (m *mockBackendWriter) Close() error {
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return nil
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}
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func (m *mockBackendWriter) Sync() error {
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return nil
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}
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func (m *mockBackendWriter) ReadAt(p []byte, off int64) (n int, err error) {
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// Not used in this test
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return 0, nil
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}
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