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fix: fallen behind detection (#11480)
Signed-off-by: Cody Littley <[email protected]>
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71
...tform-core/src/main/java/com/swirlds/platform/gossip/shadowgraph/ReservedEventWindow.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| /* | ||
| * Copyright (C) 2024 Hedera Hashgraph, LLC | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| package com.swirlds.platform.gossip.shadowgraph; | ||
|
|
||
| import com.swirlds.platform.consensus.NonAncientEventWindow; | ||
| import edu.umd.cs.findbugs.annotations.NonNull; | ||
| import java.util.Objects; | ||
|
|
||
| /** | ||
| * An event window that has been reserved in the shadowgraph. While this reservation is held, the shadowgraph will not | ||
| * unlink any events that are non-expired with respect to the reserved window. | ||
| */ | ||
| public class ReservedEventWindow implements AutoCloseable { | ||
| private final NonAncientEventWindow eventWindow; | ||
| private final ShadowgraphReservation shadowgraphReservation; | ||
|
|
||
| /** | ||
| * Constructor. | ||
| * | ||
| * @param eventWindow the event window | ||
| * @param shadowgraphReservation the shadowgraph reservation | ||
| */ | ||
| public ReservedEventWindow( | ||
| @NonNull final NonAncientEventWindow eventWindow, | ||
| @NonNull final ShadowgraphReservation shadowgraphReservation) { | ||
| this.eventWindow = Objects.requireNonNull(eventWindow); | ||
| this.shadowgraphReservation = Objects.requireNonNull(shadowgraphReservation); | ||
| } | ||
|
|
||
| /** | ||
| * {@inheritDoc} | ||
| */ | ||
| @Override | ||
| public void close() { | ||
| shadowgraphReservation.close(); | ||
| } | ||
|
|
||
| /** | ||
| * Get the reserved event window. No events will be unlinked that are non-expired with respect to this window, as | ||
| * long as this reservation is held. | ||
| * | ||
| * @return the reserved event window | ||
| */ | ||
| @NonNull | ||
| public NonAncientEventWindow getEventWindow() { | ||
| return eventWindow; | ||
| } | ||
|
|
||
| /** | ||
| * Get the number of reservations in the underlying shadowgraph reservation. Exposed for unit tests. | ||
| * | ||
| * @return the number of reservations | ||
| */ | ||
| public long getReservationCount() { | ||
| return shadowgraphReservation.getReservationCount(); | ||
| } | ||
| } |
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