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* to you 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
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package com.datastax.oss.driver.internal.core.metadata.token;
import com.datastax.oss.driver.api.core.metadata.token.Token;
import com.datastax.oss.driver.api.core.metadata.token.TokenRange;
import com.datastax.oss.driver.shaded.guava.common.base.Preconditions;
import com.datastax.oss.protocol.internal.util.Bytes;
import java.nio.ByteBuffer;
import net.jcip.annotations.ThreadSafe;
@ThreadSafe
public class ByteOrderedTokenFactory implements TokenFactory {
public static final String PARTITIONER_NAME = "org.apache.cassandra.dht.ByteOrderedPartitioner";
public static final ByteOrderedToken MIN_TOKEN = new ByteOrderedToken(ByteBuffer.allocate(0));
@Override
public String getPartitionerName() {
return PARTITIONER_NAME;
}
@Override
public Token hash(ByteBuffer partitionKey) {
return new ByteOrderedToken(partitionKey);
}
@Override
public Token parse(String tokenString) {
// This method must be able to parse the contents of system.peers.tokens, which do not have the
// "0x" prefix. On the other hand, OPPToken#toString has the "0x" because it should be usable in
// a CQL query, and it's nice to have fromString and toString symmetrical. So handle both cases:
if (!tokenString.startsWith("0x")) {
String prefix = (tokenString.length() % 2 == 0) ? "0x" : "0x0";
tokenString = prefix + tokenString;
}
ByteBuffer value = Bytes.fromHexString(tokenString);
return new ByteOrderedToken(value);
}
@Override
public String format(Token token) {
Preconditions.checkArgument(
token instanceof ByteOrderedToken, "Can only format ByteOrderedToken instances");
return Bytes.toHexString(((ByteOrderedToken) token).getValue());
}
@Override
public Token minToken() {
return MIN_TOKEN;
}
@Override
public TokenRange range(Token start, Token end) {
Preconditions.checkArgument(
start instanceof ByteOrderedToken && end instanceof ByteOrderedToken,
"Can only build ranges of ByteOrderedToken instances");
return new ByteOrderedTokenRange(((ByteOrderedToken) start), ((ByteOrderedToken) end));
}
}