| /* |
| * 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.lucene.replicator; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| |
| /** |
| * Token for a replication session, for guaranteeing that source replicated |
| * files will be kept safe until the replication completes. |
| * |
| * @see Replicator#checkForUpdate(String) |
| * @see Replicator#release(String) |
| * @see LocalReplicator#DEFAULT_SESSION_EXPIRATION_THRESHOLD |
| * |
| * @lucene.experimental |
| */ |
| public final class SessionToken { |
| |
| /** |
| * ID of this session. |
| * Should be passed when releasing the session, thereby acknowledging the |
| * {@link Replicator Replicator} that this session is no longer in use. |
| * @see Replicator#release(String) |
| */ |
| public final String id; |
| |
| /** |
| * @see Revision#getVersion() |
| */ |
| public final String version; |
| |
| /** |
| * @see Revision#getSourceFiles() |
| */ |
| public final Map<String,List<RevisionFile>> sourceFiles; |
| |
| /** Constructor which deserializes from the given {@link DataInput}. */ |
| public SessionToken(DataInput in) throws IOException { |
| this.id = in.readUTF(); |
| this.version = in.readUTF(); |
| this.sourceFiles = new HashMap<>(); |
| int numSources = in.readInt(); |
| while (numSources > 0) { |
| String source = in.readUTF(); |
| int numFiles = in.readInt(); |
| List<RevisionFile> files = new ArrayList<>(numFiles); |
| for (int i = 0; i < numFiles; i++) { |
| String fileName = in.readUTF(); |
| RevisionFile file = new RevisionFile(fileName); |
| file.size = in.readLong(); |
| files.add(file); |
| } |
| this.sourceFiles.put(source, files); |
| --numSources; |
| } |
| } |
| |
| /** Constructor with the given id and revision. */ |
| public SessionToken(String id, Revision revision) { |
| this.id = id; |
| this.version = revision.getVersion(); |
| this.sourceFiles = revision.getSourceFiles(); |
| } |
| |
| /** Serialize the token data for communication between server and client. */ |
| public void serialize(DataOutput out) throws IOException { |
| out.writeUTF(id); |
| out.writeUTF(version); |
| out.writeInt(sourceFiles.size()); |
| for (Entry<String,List<RevisionFile>> e : sourceFiles.entrySet()) { |
| out.writeUTF(e.getKey()); |
| List<RevisionFile> files = e.getValue(); |
| out.writeInt(files.size()); |
| for (RevisionFile file : files) { |
| out.writeUTF(file.fileName); |
| out.writeLong(file.size); |
| } |
| } |
| } |
| |
| @Override |
| public String toString() { |
| return "id=" + id + " version=" + version + " files=" + sourceFiles; |
| } |
| |
| } |