trait RequestCounterAllocator extends AnyRef

Allocates com.digitalasset.canton.RequestCounters for the transaction processor.

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RequestCounterAllocatorImpl
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Abstract Value Members

  1. abstract def allocateFor(sc: SequencerCounter)(implicit traceContext: TraceContext): Option[RequestCounter]

    Allocates the next request counter to the confirmation request with the given com.digitalasset.canton.SequencerCounter.

    Allocates the next request counter to the confirmation request with the given com.digitalasset.canton.SequencerCounter.

    The assigned request counters form a contiguous sequence that can be monotonically embedded into the sequence of com.digitalasset.canton.SequencerCounters.

    All calls must be sequential with increasing sequencer counters, although they can run in different threads. So if allocateFor is called for two sequencer counters sc1 and sc2 with sc1 < sc2, then returning from the call for sc1 must happen before the call for sc2.

    Consecutive calls are idempotent. So if allocateFor is called for the same sequencer counter twice, without another intervening call for a difference sequencer counter, then the second call returns the same result as the first one.

    returns

    scala.None if the sequencer counter is before the clean replay starting point and request processing should be skipped

    Exceptions thrown

    java.lang.IllegalArgumentException if the values Long.MaxValue is used as a sequence counter

    java.lang.IllegalStateException if no request counter can be assigned because an earlier call assigned already a com.digitalasset.canton.RequestCounter to a higher com.digitalasset.canton.SequencerCounter, or because all request counters have been exhausted. The request counter Long.MaxValue cannot be used.

  2. abstract def peek: RequestCounter

    Peeks at what would be the next request counter to allocate.

    Peeks at what would be the next request counter to allocate.

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    @VisibleForTesting()
  3. abstract def skipRequestCounter(rc: RequestCounter)(implicit traceContext: TraceContext): Unit

    Skips the next request counter.

    Skips the next request counter.

    This allows for "holes" in the mapping of sequencer to request counters allowing for request counters for which no sequencer counters exist (for example "repair" requests made outside the realm of a sequencer).

    All calls must be sequential, and the only request counter that can be skipped is the "next" request counter that would have been allocated by allocateFor.

    Exceptions thrown

    java.lang.IllegalArgumentException if the specified com.digitalasset.canton.RequestCounter is not the one that would otherwise be allocated next.

    java.lang.IllegalStateException if all request counters have been exhausted. The request counter Long.MaxValue cannot be used.

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