| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * 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 |
| * |
| * 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 org.apache.cassandra.dht; |
| |
| import java.io.DataInput; |
| import java.io.IOException; |
| import java.net.InetAddress; |
| import java.util.*; |
| import java.util.concurrent.ExecutionException; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.cassandra.config.DatabaseDescriptor; |
| import org.apache.cassandra.config.Schema; |
| import org.apache.cassandra.db.Keyspace; |
| import org.apache.cassandra.db.TypeSizes; |
| import org.apache.cassandra.exceptions.ConfigurationException; |
| import org.apache.cassandra.gms.FailureDetector; |
| import org.apache.cassandra.io.IVersionedSerializer; |
| import org.apache.cassandra.io.util.DataOutputPlus; |
| import org.apache.cassandra.locator.AbstractReplicationStrategy; |
| import org.apache.cassandra.locator.TokenMetadata; |
| import org.apache.cassandra.service.StorageService; |
| |
| public class BootStrapper |
| { |
| private static final Logger logger = LoggerFactory.getLogger(BootStrapper.class); |
| |
| /* endpoint that needs to be bootstrapped */ |
| protected final InetAddress address; |
| /* token of the node being bootstrapped. */ |
| protected final Collection<Token> tokens; |
| protected final TokenMetadata tokenMetadata; |
| |
| public BootStrapper(InetAddress address, Collection<Token> tokens, TokenMetadata tmd) |
| { |
| assert address != null; |
| assert tokens != null && !tokens.isEmpty(); |
| |
| this.address = address; |
| this.tokens = tokens; |
| tokenMetadata = tmd; |
| } |
| |
| public void bootstrap() |
| { |
| if (logger.isDebugEnabled()) |
| logger.debug("Beginning bootstrap process"); |
| |
| RangeStreamer streamer = new RangeStreamer(tokenMetadata, tokens, address, "Bootstrap"); |
| streamer.addSourceFilter(new RangeStreamer.FailureDetectorSourceFilter(FailureDetector.instance)); |
| streamer.addSourceFilter(new RangeStreamer.ExcludeLocalNodeFilter()); |
| |
| for (String keyspaceName : Schema.instance.getNonSystemKeyspaces()) |
| { |
| AbstractReplicationStrategy strategy = Keyspace.open(keyspaceName).getReplicationStrategy(); |
| streamer.addRanges(keyspaceName, strategy.getPendingAddressRanges(tokenMetadata, tokens, address)); |
| } |
| |
| try |
| { |
| streamer.fetchAsync().get(); |
| StorageService.instance.finishBootstrapping(); |
| } |
| catch (InterruptedException e) |
| { |
| throw new RuntimeException("Interrupted while waiting on boostrap to complete. Bootstrap will have to be restarted."); |
| } |
| catch (ExecutionException e) |
| { |
| throw new RuntimeException("Error during boostrap: " + e.getCause().getMessage(), e.getCause()); |
| } |
| } |
| |
| /** |
| * if initialtoken was specified, use that (split on comma). |
| * otherwise, if num_tokens == 1, pick a token to assume half the load of the most-loaded node. |
| * else choose num_tokens tokens at random |
| */ |
| public static Collection<Token> getBootstrapTokens(final TokenMetadata metadata) throws ConfigurationException |
| { |
| Collection<String> initialTokens = DatabaseDescriptor.getInitialTokens(); |
| // if user specified tokens, use those |
| if (initialTokens.size() > 0) |
| { |
| logger.debug("tokens manually specified as {}", initialTokens); |
| List<Token> tokens = new ArrayList<Token>(initialTokens.size()); |
| for (String tokenString : initialTokens) |
| { |
| Token token = StorageService.getPartitioner().getTokenFactory().fromString(tokenString); |
| if (metadata.getEndpoint(token) != null) |
| throw new ConfigurationException("Bootstrapping to existing token " + tokenString + " is not allowed (decommission/removenode the old node first)."); |
| tokens.add(token); |
| } |
| return tokens; |
| } |
| |
| int numTokens = DatabaseDescriptor.getNumTokens(); |
| if (numTokens < 1) |
| throw new ConfigurationException("num_tokens must be >= 1"); |
| |
| if (numTokens == 1) |
| logger.warn("Picking random token for a single vnode. You should probably add more vnodes; failing that, you should probably specify the token manually"); |
| |
| return getRandomTokens(metadata, numTokens); |
| } |
| |
| public static Collection<Token> getRandomTokens(TokenMetadata metadata, int numTokens) |
| { |
| Set<Token> tokens = new HashSet<Token>(numTokens); |
| while (tokens.size() < numTokens) |
| { |
| Token token = StorageService.getPartitioner().getRandomToken(); |
| if (metadata.getEndpoint(token) == null) |
| tokens.add(token); |
| } |
| return tokens; |
| } |
| |
| public static class StringSerializer implements IVersionedSerializer<String> |
| { |
| public static final StringSerializer instance = new StringSerializer(); |
| |
| public void serialize(String s, DataOutputPlus out, int version) throws IOException |
| { |
| out.writeUTF(s); |
| } |
| |
| public String deserialize(DataInput in, int version) throws IOException |
| { |
| return in.readUTF(); |
| } |
| |
| public long serializedSize(String s, int version) |
| { |
| return TypeSizes.NATIVE.sizeof(s); |
| } |
| } |
| } |