private WriteBatchImpl readWriteBatch(SliceInput record, int updateSize) throws IOException {
WriteBatchImpl writeBatch = new WriteBatchImpl();
int entries = 0;
while (record.isReadable()) {
entries++;
ValueType valueType = ValueType.getValueTypeByPersistentId(record.readByte());
if (valueType == VALUE) {
Slice key = readLengthPrefixedBytes(record);
Slice value = readLengthPrefixedBytes(record);
writeBatch.put(key, value);
} else if (valueType == DELETION) {
Slice key = readLengthPrefixedBytes(record);
writeBatch.delete(key);
} else {
throw new IllegalStateException("Unexpected value type " + valueType);
}
}
if (entries != updateSize) {
throw new IOException(
String.format(
"Expected %d entries in log record but found %s entries", updateSize, entries));
}
return writeBatch;
}
