xtdb-core/xtdb.api.log/InMemoryLog

InMemoryLog

class InMemoryLog<M> @JvmOverloads constructor(instantSource: InstantSource, val epoch: Int, val partitions: Int = 1) : Log<M>

Constructors

constructor(instantSource: InstantSource, epoch: Int, partitions: Int = 1)

Types

object Companion

@SerialName(value = "!InMemory")

@Serializable

data class Factory(var instantSource: InstantSource = InstantSource.system(), var epoch: Int = 0) : Log.Factory

Properties

open override val epoch: Int

val partitions: Int

Functions

open suspend override fun appendMessage(message: M, partition: Int = 0): Log.MessageMetadata

appendMessageBlocking

open fun appendMessageBlocking(message: M, partition: Int = 0): Log.MessageMetadata

open override fun close()

latestSubmittedMsgId

open fun latestSubmittedMsgId(partition: Int = 0): MessageId

latestSubmittedOffset

open override fun latestSubmittedOffset(partition: Int = 0): LogOffset

readLastMessage

open override fun readLastMessage(partition: Int = 0): M?

open override fun readRecords(partition: Int, fromMsgId: MessageId, toMsgId: MessageId): Sequence<Log.Record<M>>

Reads records in the range [fromMsgId, toMsgId) (start-inclusive, end-exclusive). Returns a lazy sequence of decoded records in offset order. If toMsgId exceeds the latest submitted offset, reads up to the latest available record.

open suspend fun tailAll(partition: Int, afterMsgId: MessageId, pollTimeout: Duration = 1.seconds, processor: Log.RecordProcessor<M>)

Polls a tail until cancelled, handing every poll to processor, including empty polls.

open suspend override fun <R> withTail(partition: Int, afterMsgId: MessageId, action: suspend (Log.Tail<M>) -> R): R

Runs action with a tail positioned after afterMsgId. The tail and its subscription are valid only until action returns.