gaoran10 commented on a change in pull request #11490:
URL: https://github.com/apache/pulsar/pull/11490#discussion_r680364986
##########
File path:
managed-ledger/src/main/java/org/apache/bookkeeper/mledger/impl/MetaStoreImpl.java
##########
@@ -264,4 +285,70 @@ private static MetaStoreException getException(Throwable
t) {
return new MetaStoreException(t);
}
}
+
+ /**
+ * Compress ManagedLedgerInfo data.
+ *
+ * compression data structure
+ * [MAGIC_NUMBER](2) + [METADATA_SIZE](4) + [METADATA_PAYLOAD] +
[MANAGED_LEDGER_INFO_PAYLOAD]
+ */
+ public byte[] compressLedgerInfo(ManagedLedgerInfo managedLedgerInfo) {
+ if (compressionType == null ||
compressionType.equals(CompressionType.NONE)) {
+ return managedLedgerInfo.toByteArray();
+ }
+ byte[] originalBytes = managedLedgerInfo.toByteArray();
+ MLDataFormats.ManagedLedgerInfoMetadata mlInfoMetadata =
MLDataFormats.ManagedLedgerInfoMetadata.newBuilder()
+ .setCompressionType(compressionType.name())
+ .setUnpressedSize(originalBytes.length)
+ .build();
+ ByteBuf metadataByteBuf = PulsarByteBufAllocator.DEFAULT.buffer(
+ mlInfoMetadata.getSerializedSize() + 6,
mlInfoMetadata.getSerializedSize() + 6);
+ metadataByteBuf.writeShort(MAGIC_MANAGED_LEDGER_INFO_METADATA);
+ metadataByteBuf.writeInt(mlInfoMetadata.getSerializedSize());
+ metadataByteBuf.writeBytes(mlInfoMetadata.toByteArray());
+
+ ByteBuf originalByteBuf =
PulsarByteBufAllocator.DEFAULT.buffer(originalBytes.length,
originalBytes.length);
+ originalByteBuf.writeBytes(originalBytes);
+ ByteBuf encodeByteBuf =
CompressionCodecProvider.getCompressionCodec(compressionType).encode(originalByteBuf);
Review comment:
I'll fix this.
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