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[cache] Fix concurrent use of a cache entry (#3785)

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Closes #3507
Fix some rare case where the concurrent readings of a cache entry can fail.

Signed-off-by: Gwendal Roulleau <gwendal.roulleau@gmail.com>
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Gwendal Roulleau 2023-08-30 14:23:35 +02:00 committed by GitHub
parent e765af06cb
commit 3ddbdb25ed
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bundles/org.openhab.core/src/main/java/org/openhab/core/cache/lru/LRUMediaCacheEntry.java vendored
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@ -296,7 +296,7 @@ public class LRUMediaCacheEntry<V> {
} }
} }
// the cache file is now filled, get bytes from it. // the cache file is now filled, get bytes from it.
long maxToRead = Math.min(currentSize, sizeToRead); long maxToRead = Math.min(fileChannelLocal.size(), sizeToRead);
ByteBuffer byteBufferFromChannelFile = ByteBuffer.allocate((int) maxToRead); ByteBuffer byteBufferFromChannelFile = ByteBuffer.allocate((int) maxToRead);
int byteReadNumber = fileChannelLocal.read(byteBufferFromChannelFile, Integer.valueOf(start).longValue()); int byteReadNumber = fileChannelLocal.read(byteBufferFromChannelFile, Integer.valueOf(start).longValue());
logger.trace("Read {} bytes from the filechannel", byteReadNumber); logger.trace("Read {} bytes from the filechannel", byteReadNumber);