topicreadercommon

package
v3.76.2 Latest Latest
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 Go to latest Published: Aug 5, 2024 License: Apache-2.0 Imports: 17 Imported by: 0

Documentation

Index

Constants

View Source 
const DefaultBufferSize = 1024 * 1024

Variables

View Source 
var ErrPublicUnexpectedCodec = xerrors.Wrap(errors.New("ydb: unexpected codec"))

ErrPublicUnexpectedCodec return when try to read message content with unknown codec

Functions

func BatchIsEmpty 

func BatchIsEmpty(b *PublicBatch) bool

func CreateInitMessage 

func CreateInitMessage(consumer string, selectors []*PublicReadSelector) *rawtopicreader.InitRequest

func MessageGetBufferBytesAccount 

func MessageGetBufferBytesAccount(m *PublicMessage) int

func MessageSetNilDataForTest 

func MessageSetNilDataForTest(m *PublicMessage)

func NextReaderID 

func NextReaderID() int64

Types

type CallbackWithMessageContentFunc 

type CallbackWithMessageContentFunc func(data []byte) error

CallbackWithMessageContentFunc is callback function for work with message content data bytes MUST NOT be used after f returned if you need content longer - copy content to other slice

type CommitRange 

type CommitRange struct {
	CommitOffsetStart rawtopiccommon.Offset
	CommitOffsetEnd   rawtopiccommon.Offset
	PartitionSession  *PartitionSession
}

func GetCommitRange 

func GetCommitRange(item PublicCommitRangeGetter) CommitRange

type CommitRanges 

type CommitRanges struct {
	Ranges []CommitRange
}

func NewCommitRangesFromPublicCommits 

func NewCommitRangesFromPublicCommits(ranges []PublicCommitRange) CommitRanges

func NewCommitRangesWithCapacity 

func NewCommitRangesWithCapacity(capacity int) CommitRanges

func (*CommitRanges) Append 

func (r *CommitRanges) Append(ranges ...PublicCommitRangeGetter)

func (*CommitRanges) AppendCommitRange 

func (r *CommitRanges) AppendCommitRange(cr CommitRange)

func (*CommitRanges) AppendCommitRanges 

func (r *CommitRanges) AppendCommitRanges(ranges []CommitRange)

func (*CommitRanges) AppendMessages 

func (r *CommitRanges) AppendMessages(messages ...PublicMessage)

func (*CommitRanges) GetCommitsInfo 

func (r *CommitRanges) GetCommitsInfo() []trace.TopicReaderStreamCommitInfo

GetCommitsInfo implements trace.TopicReaderStreamSendCommitMessageStartMessageInfo

func (*CommitRanges) Len 

func (r *CommitRanges) Len() int

func (*CommitRanges) Optimize 

func (r *CommitRanges) Optimize()

func (*CommitRanges) Reset 

func (r *CommitRanges) Reset()

func (*CommitRanges) ToPartitionsOffsets 

func (r *CommitRanges) ToPartitionsOffsets() []rawtopicreader.PartitionCommitOffset

type DecoderMap 

type DecoderMap struct {
	// contains filtered or unexported fields
}

func NewDecoderMap 

func NewDecoderMap() DecoderMap

func (*DecoderMap) AddDecoder 

func (m *DecoderMap) AddDecoder(codec rawtopiccommon.Codec, createFunc PublicCreateDecoderFunc)

func (*DecoderMap) Decode 

func (m *DecoderMap) Decode(codec rawtopiccommon.Codec, input io.Reader) (io.Reader, error)

type PartitionSession 

type PartitionSession struct {
	Topic       string
	PartitionID int64

	ReaderID int64

	StreamPartitionSessionID rawtopicreader.PartitionSessionID
	ClientPartitionSessionID int64
	// contains filtered or unexported fields
}

func BatchGetPartitionSession 

func BatchGetPartitionSession(item *PublicBatch) *PartitionSession

func NewPartitionSession 

func NewPartitionSession(
	partitionContext context.Context,
	topic string,
	partitionID int64,
	readerID int64,
	connectionID string,
	partitionSessionID rawtopicreader.PartitionSessionID,
	clientPartitionSessionID int64,
	committedOffset rawtopiccommon.Offset,
) *PartitionSession

func (*PartitionSession) Close 

func (s *PartitionSession) Close()

func (*PartitionSession) CommittedOffset 

func (s *PartitionSession) CommittedOffset() rawtopiccommon.Offset

func (*PartitionSession) Context 

func (s *PartitionSession) Context() context.Context

func (*PartitionSession) LastReceivedMessageOffset 

func (s *PartitionSession) LastReceivedMessageOffset() rawtopiccommon.Offset

func (*PartitionSession) SetCommittedOffset 

func (s *PartitionSession) SetCommittedOffset(v rawtopiccommon.Offset)

func (*PartitionSession) SetContext 

func (s *PartitionSession) SetContext(ctx context.Context)

func (*PartitionSession) SetLastReceivedMessageOffset 

func (s *PartitionSession) SetLastReceivedMessageOffset(v rawtopiccommon.Offset)

func (*PartitionSession) ToPublic 

func (s *PartitionSession) ToPublic() PublicPartitionSession

type PartitionSessionStorage 

type PartitionSessionStorage struct {
	// contains filtered or unexported fields
}

func (*PartitionSessionStorage) Add 

func (c *PartitionSessionStorage) Add(session *PartitionSession) error

func (*PartitionSessionStorage) Get 

func (c *PartitionSessionStorage) Get(id rawtopicreader.PartitionSessionID) (*PartitionSession, error)

func (*PartitionSessionStorage) GetAll 

func (c *PartitionSessionStorage) GetAll() []*PartitionSession

func (*PartitionSessionStorage) Remove 

func (c *PartitionSessionStorage) Remove(id rawtopicreader.PartitionSessionID) (*PartitionSession, error)

type Pool 

type Pool interface {
	Get() interface{}
	Put(x interface{})
}

Pool is interface for sync.Pool and may be extended by follow to original type

type PublicBatch 

type PublicBatch struct {
	empty.DoNotCopy

	Messages []*PublicMessage
	// contains filtered or unexported fields
}

PublicBatch is ordered group of message from one partition

func BatchAppend 

func BatchAppend(original, appended *PublicBatch) (*PublicBatch, error)

func BatchCutMessages 

func BatchCutMessages(b *PublicBatch, count int) (head, rest *PublicBatch)

func BatchSetCommitRangeForTest 

func BatchSetCommitRangeForTest(b *PublicBatch, commitRange CommitRange) *PublicBatch

func NewBatch 

func NewBatch(session *PartitionSession, messages []*PublicMessage) (*PublicBatch, error)

func NewBatchFromStream 

func NewBatchFromStream(
	decoders DecoderMap,
	session *PartitionSession,
	sb rawtopicreader.Batch,
) (*PublicBatch, error)

func ReadRawBatchesToPublicBatches 

func ReadRawBatchesToPublicBatches(
	msg *rawtopicreader.ReadResponse,
	sessions *PartitionSessionStorage,
	decoders DecoderMap,
) ([]*PublicBatch, error)

func (*PublicBatch) Context 

func (m *PublicBatch) Context() context.Context

Context is cancelled when code should stop to process messages batch for example - lost connection to server or receive stop partition signal without graceful flag

func (*PublicBatch) PartitionID 

func (m *PublicBatch) PartitionID() int64

PartitionID of messages in the batch

func (*PublicBatch) Topic 

func (m *PublicBatch) Topic() string

Topic is path of source topic of the messages in the batch

type PublicCommitRange 

type PublicCommitRange struct {
	// contains filtered or unexported fields
}

PublicCommitRange contains data for commit messages range

Experimental: https://github.com/ydb-platform/ydb-go-sdk/blob/master/VERSIONING.md#experimental

type PublicCommitRangeGetter 

type PublicCommitRangeGetter interface {
	// contains filtered or unexported methods
}

PublicCommitRangeGetter return data piece for commit messages range

type PublicCreateDecoderFunc 

type PublicCreateDecoderFunc func(input io.Reader) (io.Reader, error)

type PublicMessage 

type PublicMessage struct {
	empty.DoNotCopy

	SeqNo                int64
	CreatedAt            time.Time
	MessageGroupID       string
	WriteSessionMetadata map[string]string
	Offset               int64
	WrittenAt            time.Time
	ProducerID           string
	Metadata             map[string][]byte // Metadata, nil if no metadata

	UncompressedSize int // as sent by sender, server/sdk doesn't check the field. It may be empty or wrong.
	// contains filtered or unexported fields
}

PublicMessage is representation of topic message

func MessageWithSetCommitRangeForTest 

func MessageWithSetCommitRangeForTest(m *PublicMessage, commitRange CommitRange) *PublicMessage

func (*PublicMessage) Context 

func (m *PublicMessage) Context() context.Context

func (*PublicMessage) PartitionID 

func (m *PublicMessage) PartitionID() int64

func (*PublicMessage) Read 

func (m *PublicMessage) Read(p []byte) (n int, err error)

Read implements io.Reader Read uncompressed message content return topicreader.UnexpectedCodec if message compressed with unknown codec

Content of the message released from the memory after first read error including io.EOF.

func (*PublicMessage) Topic 

func (m *PublicMessage) Topic() string

func (*PublicMessage) UnmarshalTo 

func (m *PublicMessage) UnmarshalTo(dst PublicMessageContentUnmarshaler) error

UnmarshalTo can call most once per message, it read all data from internal reader and call PublicMessageContentUnmarshaler.UnmarshalYDBTopicMessage with uncompressed content

type PublicMessageBuilder 

type PublicMessageBuilder struct {
	// contains filtered or unexported fields
}

func NewPublicMessageBuilder 

func NewPublicMessageBuilder() *PublicMessageBuilder

func (*PublicMessageBuilder) Build 

func (pmb *PublicMessageBuilder) Build() *PublicMessage

Build return builded message and reset internal state for create new message

func (*PublicMessageBuilder) CommitRange 

func (pmb *PublicMessageBuilder) CommitRange(cr CommitRange) *PublicMessageBuilder

func (*PublicMessageBuilder) Context 

func (pmb *PublicMessageBuilder) Context(ctx context.Context) *PublicMessageBuilder

Context set message Context

func (*PublicMessageBuilder) CreatedAt 

func (pmb *PublicMessageBuilder) CreatedAt(createdAt time.Time) *PublicMessageBuilder

CreatedAt set message CreatedAt

func (*PublicMessageBuilder) DataAndUncompressedSize 

func (pmb *PublicMessageBuilder) DataAndUncompressedSize(data []byte) *PublicMessageBuilder

DataAndUncompressedSize set message uncompressed content and field UncompressedSize

func (*PublicMessageBuilder) MessageGroupID 

func (pmb *PublicMessageBuilder) MessageGroupID(messageGroupID string) *PublicMessageBuilder

MessageGroupID set message MessageGroupID

func (*PublicMessageBuilder) Metadata 

func (pmb *PublicMessageBuilder) Metadata(metadata map[string][]byte) *PublicMessageBuilder

func (*PublicMessageBuilder) Offset 

func (pmb *PublicMessageBuilder) Offset(offset int64) *PublicMessageBuilder

Offset set message Offset

func (*PublicMessageBuilder) PartitionID 

func (pmb *PublicMessageBuilder) PartitionID(partitionID int64) *PublicMessageBuilder

PartitionID set message PartitionID

func (*PublicMessageBuilder) ProducerID 

func (pmb *PublicMessageBuilder) ProducerID(producerID string) *PublicMessageBuilder

ProducerID set message ProducerID

func (*PublicMessageBuilder) RawDataLen 

func (pmb *PublicMessageBuilder) RawDataLen(val int) *PublicMessageBuilder

func (*PublicMessageBuilder) Seqno 

func (pmb *PublicMessageBuilder) Seqno(seqNo int64) *PublicMessageBuilder

Seqno set message Seqno

func (*PublicMessageBuilder) Topic 

func (pmb *PublicMessageBuilder) Topic(topic string) *PublicMessageBuilder

Topic set message Topic

func (*PublicMessageBuilder) UncompressedSize 

func (pmb *PublicMessageBuilder) UncompressedSize(uncompressedSize int) *PublicMessageBuilder

UncompressedSize set message UncompressedSize

func (*PublicMessageBuilder) WriteSessionMetadata 

func (pmb *PublicMessageBuilder) WriteSessionMetadata(writeSessionMetadata map[string]string) *PublicMessageBuilder

WriteSessionMetadata set message WriteSessionMetadata

func (*PublicMessageBuilder) WrittenAt 

func (pmb *PublicMessageBuilder) WrittenAt(writtenAt time.Time) *PublicMessageBuilder

WrittenAt set message WrittenAt

type PublicMessageContentUnmarshaler 

type PublicMessageContentUnmarshaler interface {
	// UnmarshalYDBTopicMessage MUST NOT use data after return.
	// If you need content after return from Consume - copy data content to
	// own slice with copy(dst, data)
	UnmarshalYDBTopicMessage(data []byte) error
}

PublicMessageContentUnmarshaler is interface for unmarshal message content

type PublicPartitionSession 

type PublicPartitionSession struct {
	// PartitionSessionID is unique session ID per listener object
	PartitionSessionID int64

	// TopicPath contains path for the topic
	TopicPath string

	// PartitionID contains partition id. It can be repeated for one reader if the partition will stop/start few times.
	PartitionID int64
}

PublicPartitionSession contains information about partition session for the event

Experimental: https://github.com/ydb-platform/ydb-go-sdk/blob/master/VERSIONING.md#experimental

type PublicReadSelector 

type PublicReadSelector struct {
	Path       string
	Partitions []int64
	ReadFrom   time.Time     // zero value mean skip read from filter
	MaxTimeLag time.Duration // 0 mean skip time lag filter
}

func (PublicReadSelector) Clone 

func (s PublicReadSelector) Clone() *PublicReadSelector

Clone create deep clone of the selector

Source Files

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