sdis1819-t7g02 / service / Cloud.java
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package service; |
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import channels.BackupChannel; |
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import channels.ControlChannel; |
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import channels.Message; |
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import channels.MessageHeader; |
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import channels.RestoreChannel; |
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import protocols.SendChunkMessageProtocol; |
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import java.io.*; |
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import java.nio.file.Files; |
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import java.nio.file.Path; |
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import java.nio.file.Paths; |
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import java.util.*; |
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import java.util.concurrent.ConcurrentHashMap; |
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import java.util.concurrent.ConcurrentHashMap.KeySetView; |
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import java.util.concurrent.ConcurrentLinkedQueue; |
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//https://www.geeksforgeeks.org/serialization-in-java/
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public class Cloud implements java.io.Serializable |
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{
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private static final long serialVersionUID = 1L; |
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/**
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* stores received V and backedUp chunks
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* key = <fileID>
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*/
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private ConcurrentHashMap<String, Chunk> storedChunks; |
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/**
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* stores the number of chunks taht a file that was backed up in peer was splited into
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* key = <fileID>
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*/
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private ConcurrentHashMap<String, Integer> numberOfFileChunks; |
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/**
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* registers the peers that have stored chunks sent by this peer
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* key = <fileID>:<ChunkNo>
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*/
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private ConcurrentHashMap<String, HashSet<Integer>> colaborativePeers; |
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/**
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* stores the number of times a chunk was stored
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* key = <fileID>:<ChunkNo>
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*/
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private ConcurrentHashMap<String, Integer> numberOfChunksConfirmations; |
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/**
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* key = <fileID>:<ChunkNo>
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*/
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private ConcurrentHashMap<String, Integer> chunksToRestore; |
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/**
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* Holds chucks restored by restore protocol
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* key = <fileID>:<ChunkNo>
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*/
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private ConcurrentHashMap<String, Chunk> recoveredChunks; |
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/**
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* stores the number of chunks a file was splited into
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* key = <fileID>
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*/
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private ConcurrentLinkedQueue<String> numberOfFileChunksToBeRestored; |
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private ArrayList<FileChunker> data; |
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private int serverID; |
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private String protocol_version; |
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public ControlChannel controlRoom;
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public BackupChannel backupCh;
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public RestoreChannel restoreCh;
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long spaceRemaining;
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public Cloud(String id, String version) |
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{
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numberOfFileChunks = new ConcurrentHashMap<String, Integer>(); |
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storedChunks = new ConcurrentHashMap<String, Chunk>(); |
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colaborativePeers = new ConcurrentHashMap<String, HashSet<Integer>>(); |
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numberOfChunksConfirmations = new ConcurrentHashMap<String, Integer>(); |
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this.data = new ArrayList<>(); |
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this.numberOfFileChunksToBeRestored = new ConcurrentLinkedQueue<String>(); |
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this.recoveredChunks = new ConcurrentHashMap<String, Chunk>(); |
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this.spaceRemaining = 1073741824; //1GB |
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serverID = Integer.parseInt(id);
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protocol_version = version; |
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} |
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public synchronized boolean sendBackupMessage(Message m) { |
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return backupCh.sendMessage(m);
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} |
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public synchronized boolean sendRestoreMessage(Message m) { |
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return restoreCh.sendMessage(m);
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} |
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public Cloud getPeerTools(String id, String version) { |
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return new Cloud(id, version); |
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} |
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public int getChunkCurrentRepDegree(String fileId, String chunkNo) { |
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String key = fileId + ':' + chunkNo; |
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if(numberOfChunksConfirmations.containsKey(key)) {
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return numberOfChunksConfirmations.get(key);
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} |
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return -1; |
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} |
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public byte[] reverseList(byte[] a) { |
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ArrayList<Byte> aux = new ArrayList<Byte>(a.length); |
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for(byte b : a) { |
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aux.add(0, b);
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} |
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byte[] toReturn = new byte[a.length]; |
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int i = 0; |
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for(byte b : aux) { |
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toReturn[i] = b; |
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i++; |
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} |
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return toReturn;
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} |
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public boolean buildFile(String file_id, int maxchunks, String fileName) throws IOException |
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{
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String restore_path = Constants.CHUNKS_DIR + this.serverID + "/restored/"; |
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String key;
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Chunk aux; |
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int total = 0; |
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checkOrCreateDirectory(restore_path); |
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File restoredFile = new File(restore_path + fileName); |
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restoredFile.createNewFile(); |
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FileOutputStream fos = new FileOutputStream(restoredFile); |
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for(int i = 0; i < maxchunks; i++) |
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{
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key = file_id + ':' + Integer.toString(i); |
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if(recoveredChunks.containsKey(key)) {
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aux = recoveredChunks.get(key); |
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if(aux != null) { |
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fos.write(reverseList(aux.getChunkContent())); |
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total += aux.getChunkContent().length; |
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} |
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else {
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System.out.println("NULL chunk file might be corrupted"); |
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} |
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} |
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} |
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try
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{
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fos.close(); |
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} |
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catch(IOException e) { |
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recoveredChunks.clear(); |
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System.out.println(e.getMessage());
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} |
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recoveredChunks.clear(); |
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System.out.println("Restored file " + fileName + " with " + total + " bytes."); |
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return false; |
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} |
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public ArrayList<FileChunker> getData() |
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{
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return this.data; |
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} |
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public ConcurrentHashMap<String, Integer> getChunksToRestore() |
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{
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return this.chunksToRestore; |
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} |
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void addFile(FileChunker fc)
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{
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this.data.add(fc);
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} |
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public void addChunk(Chunk c) { |
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String key = c.getChunkId() + ":" + c.getChunkNumber(); |
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storedChunks.put(key, c); |
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} |
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public void deleteChunks(FileChunker fc, ArrayList<FileChunker> fcs) |
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{
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String file_id = fc.getFileID();
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String path = Constants.CHUNKS_DIR + this.serverID + "/backup/" + file_id + '/'; |
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File f = new File(path); |
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String[] entries = f.list(); |
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for(String s: entries) |
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{
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File currentFile = new File(f.getPath(), s); |
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currentFile.delete(); |
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} |
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f = new File(path); |
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f.delete(); |
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} |
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public boolean storeRestoreChunk(Message m) { |
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Chunk toStore = null;
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byte[] chunkData; |
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try {
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chunkData = m.getChunkContent(); |
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toStore = new Chunk(Integer.parseInt(m.getHeader().getChunkNumber()), chunkData, m.getHeader().getFileId(), Integer.parseInt(m.getHeader().getDegree())); |
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} catch (Exception e) { |
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System.out.println("Error in chunk: " + e.getMessage()); |
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return false; |
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} |
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addToRecoveredChunks(toStore); |
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return true; |
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} |
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public boolean storeChunk(Message m) { |
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Chunk toStore = null;
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String filename, path;
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FileOutputStream out = null; |
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File dir = null; |
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byte[] chunkData; |
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try {
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chunkData = m.getChunkContent(); |
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toStore = new Chunk(Integer.parseInt(m.getHeader().getChunkNumber()), chunkData, m.getHeader().getFileId(), Integer.parseInt(m.getHeader().getDegree())); |
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} catch (Exception e) { |
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System.out.println("Error in chunk: " + e.getMessage()); |
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return false; |
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} |
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if(toStore.getChunkContent().length > spaceRemaining) {
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System.out.println("There is no available space"); |
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return false; |
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} |
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this.addChunk(toStore);
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spaceRemaining -= toStore.getChunkSize(); |
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path = Constants.CHUNKS_DIR + this.serverID + "/backup/" + toStore.getChunkId() + "/"; |
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filename = getFileName(Integer.parseInt(toStore.getChunkNumber()));
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if(!doesDirExists(path)) {
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dir = new File(path); |
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if(!dir.mkdirs()) {
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return false; |
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} |
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} |
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try {
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dir = new File(path + filename); |
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dir.createNewFile(); |
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out = new FileOutputStream(dir); |
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out.write(toStore.getChunkContent()); |
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out.close(); |
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} catch (IOException e) { |
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System.out.println("Error writing file to disk: " + e.getMessage()); |
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return false; |
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} |
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return true; |
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} |
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public boolean checkIfChunkWasRestored(String fileid, String chunknr) |
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{
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return this.recoveredChunks.containsKey(fileid + ':' + chunknr); |
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} |
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public void addToRecoveredChunks(Chunk c) { |
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String key = c.getChunkId() + ":" + c.getChunkNumber(); |
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if(!recoveredChunks.containsKey(key)) {
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recoveredChunks.put(key, c); |
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} |
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} |
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public void registerFileChunkToRestore(String file_id, String chunknr) |
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{
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if(!this.numberOfFileChunksToBeRestored.contains(file_id + ':' + chunknr)) |
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{
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this.numberOfFileChunksToBeRestored.add(file_id + ':' + chunknr); |
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} |
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} |
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public boolean isFileChunkRegistered(String fileId, String chunknr) { |
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return this.numberOfFileChunksToBeRestored.contains(fileId + ':' + chunknr); |
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} |
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public void createDirectoryFile(FileChunker fc) throws IOException |
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{
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String file_id = fc.getFileID();
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String path = Constants.CHUNKS_DIR + this.serverID + "/backup/" + file_id + '/'; |
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if(checkOrCreateDirectory(path) == -1) |
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{
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System.out.println("Couldn't create peer backup chunks dir for that file!"); |
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} |
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for(int i = 0; i < fc.getChunks().size(); i++) |
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{
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int nr = i + 1; |
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String filename = "chk" + Integer.toString(nr); |
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File dir = new File(path + filename); |
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dir.createNewFile(); |
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try(FileOutputStream out = new FileOutputStream(dir)) |
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{
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out.write(fc.getChunks().get(i).getChunkContent()); |
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} |
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} |
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} |
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private static String getFileName(int chunkNumber) { |
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return "chk" + Integer.toString(chunkNumber); |
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} |
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private static boolean doesDirExists(String path) { |
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File f = new File(path); |
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return f.exists();
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} |
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public boolean checkIfPeerStoredFile(String filename) { |
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return numberOfFileChunks.containsKey(filename);
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} |
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public static int checkOrCreateDirectory(String dirName) |
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{
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File f = new File(dirName); |
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int result = -1; |
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if(!f.exists())
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{
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// System.out.println("Creating directory " + f.getName());
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try
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{
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f.mkdirs(); |
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result = 1;
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} |
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catch(SecurityException se) |
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{
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// System.err.println("Dir exception: " + se.toString());
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se.printStackTrace(); |
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result = -1;
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} |
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if(result == 1) |
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{
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// System.out.println("DIR " + f.getName() + " created");
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} |
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} |
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else if(f.exists()) |
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{
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// System.out.println("Directory already exists, proceeding");
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result = 2;
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} |
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else
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{
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result = -1;
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} |
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return result;
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} |
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public void createControlRoom(String ip, String port) throws IOException { |
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controlRoom = new ControlChannel(ip, port, this); |
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} |
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public void createBackupChannel(String ip, String port) throws IOException { |
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backupCh = new BackupChannel(ip, port, this); |
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} |
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public void createRestoreChannel(String ip, String port) throws IOException { |
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restoreCh = new RestoreChannel(ip, port, this); |
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} |
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public void activateChannels() { |
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controlRoom.start(); |
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backupCh.start(); |
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restoreCh.start(); |
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} |
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public int getID() { |
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return serverID;
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} |
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public boolean storeChunk(Chunk c) |
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{
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if(!this.storedChunks.containsKey(c.getChunkId() + ":" + c.getChunkNumber())) { |
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addChunk(c); |
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spaceRemaining -= c.getChunkSize(); |
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} |
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return true; |
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} |
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public String getProtocolVersion() { |
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return protocol_version;
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} |
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public ConcurrentHashMap<String, Chunk> getStoredChunks() |
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{
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return this.storedChunks; |
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} |
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public synchronized void registerNumberOfFileChunks(String fileID, Integer NFileChunks) { |
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System.out.println(fileID + " registered."); |
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numberOfFileChunks.put(fileID, NFileChunks); |
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} |
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public synchronized boolean insertAwaitingStoreFile(MessageHeader h) { |
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String key = h.getFileId() + ':' + h.getChunkNumber(); |
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if(numberOfFileChunks.containsKey(h.getFileId())) {
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colaborativePeers.put(key, new HashSet<Integer>()); |
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numberOfChunksConfirmations.put(key, 0);
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return true; |
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} |
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else {
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System.out.println("Cloud hasn't got " + h.getFileId() + " registered."); |
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return false; |
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} |
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} |
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public boolean wasTheRepDegreeMatched(Chunk c) { |
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return c.getReplicationDegree() <= numberOfChunksConfirmations.get(c.getChunkId() + ':' + c.getChunkNumber()); |
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} |
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public synchronized boolean intrepertStoredMessage(MessageHeader h) { |
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String key = h.getFileId() + ':' + h.getChunkNumber(); |
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if(numberOfFileChunks.containsKey(h.getFileId())) {
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if(colaborativePeers.get(key).add(Integer.parseInt(h.getSenderId()))) { |
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numberOfChunksConfirmations.put(key, numberOfChunksConfirmations.get(key) + 1);
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} |
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return true; |
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} |
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else {
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if(storedChunks.containsKey(key)) {
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if(!colaborativePeers.containsKey(key)) {
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colaborativePeers.put(key, new HashSet<Integer>()); |
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colaborativePeers.get(key).add(getID()); |
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} |
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colaborativePeers.get(key).add(Integer.parseInt(h.getSenderId()));
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storedChunks.get(key).setActualReplicationDegree(colaborativePeers.get(key).size()); |
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return true; |
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} |
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return false; |
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} |
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} |
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public synchronized boolean deleteFile(MessageHeader h) { |
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String fileId = h.getFileId();
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String path = Constants.CHUNKS_DIR + this.serverID + "/backup/" + fileId + "/"; |
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File dir = new File(path); |
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boolean somethingDeleted = false; |
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if(dir.isDirectory()) {
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for(File f : dir.listFiles()) { |
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f.delete(); |
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somethingDeleted = true;
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} |
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if(!dir.delete()) {
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System.out.println("Couldn't erase " + h.getFileId() + " from file system"); |
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return false; |
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} |
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} |
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for(String key : storedChunks.keySet()) { |
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Chunk c = storedChunks.get(key); |
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if(c.getChunkId().equals(fileId)) {
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storedChunks.remove(key); |
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spaceRemaining += c.getChunkSize(); |
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somethingDeleted = true;
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} |
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} |
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if(somethingDeleted) {
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System.out.println(h.getFileId() + " erased from file system."); |
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} |
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return true; |
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} |
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public KeySetView<String, Integer> getBackedUpFileNames() { |
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return numberOfFileChunks.keySet();
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} |
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public String getPathNameFromFileId(String fileId) { |
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if(storedChunks.containsKey(fileId + ":" + "0")) { |
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return storedChunks.get(fileId + ":" + "0").getFilePathName(); |
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} |
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return null; |
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} |
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public int getBackedUpChunkNecessaryRepDegree(String fileId) { |
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if(storedChunks.containsKey(fileId + ":" + "0")) { |
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return storedChunks.get(fileId + ":" + "0").getReplicationDegree(); |
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} |
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return -1; |
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} |
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public int getBackepUpChunkPerceivedRepDegree(String fileId, int id) { |
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if(colaborativePeers.containsKey(fileId + ":" + Integer.toString(id))) { |
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return colaborativePeers.get(fileId + ":" + Integer.toString(id)).size(); |
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} |
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return 0; |
| 548 |
} |
| 549 |
|
| 550 |
public long getAvailableSpace() { |
| 551 |
return this.spaceRemaining; |
| 552 |
} |
| 553 |
|
| 554 |
public int getNumberOfStoredChunks() { |
| 555 |
return storedChunks.size();
|
| 556 |
} |
| 557 |
|
| 558 |
public long getChunkSpace() { |
| 559 |
long total = 0; |
| 560 |
|
| 561 |
for(String key : storedChunks.keySet()) { |
| 562 |
Chunk c = storedChunks.get(key); |
| 563 |
total += c.getChunkSize(); |
| 564 |
} |
| 565 |
|
| 566 |
return total;
|
| 567 |
} |
| 568 |
|
| 569 |
public long getTotalSpace() { |
| 570 |
return this.spaceRemaining + getChunkSpace(); |
| 571 |
} |
| 572 |
|
| 573 |
public void setAvailableSpace(long s) { |
| 574 |
this.spaceRemaining = s-getChunkSpace();
|
| 575 |
} |
| 576 |
|
| 577 |
public void sendRemovedMessage(String fileId, String chunkNumber) { |
| 578 |
String[] headerElements = new String[Constants.REMOVED_N_ARGS]; |
| 579 |
MessageHeader h; |
| 580 |
headerElements[0] = Constants.REMOVED;
|
| 581 |
headerElements[1] = getProtocolVersion();
|
| 582 |
headerElements[2] = Integer.toString(getID()); |
| 583 |
headerElements[3] = fileId;
|
| 584 |
headerElements[4] = chunkNumber;
|
| 585 |
|
| 586 |
h = new MessageHeader(headerElements);
|
| 587 |
|
| 588 |
controlRoom.sendHeader(h); |
| 589 |
} |
| 590 |
|
| 591 |
public void sendHeader(MessageHeader mh) |
| 592 |
{
|
| 593 |
controlRoom.sendHeader(mh); |
| 594 |
} |
| 595 |
|
| 596 |
public boolean freeUpSpace(long desiredSpace) { |
| 597 |
|
| 598 |
String fileId, chunkNo, path;
|
| 599 |
File file;
|
| 600 |
|
| 601 |
for(String key : storedChunks.keySet()) { |
| 602 |
Chunk c = storedChunks.get(key); |
| 603 |
if(getChunkSpace() <= desiredSpace) {
|
| 604 |
break;
|
| 605 |
} |
| 606 |
|
| 607 |
fileId = c.getChunkId(); |
| 608 |
chunkNo = c.getChunkNumber(); |
| 609 |
|
| 610 |
path = Constants.CHUNKS_DIR + this.serverID + "/backup/" + fileId + "/chk" + chunkNo; |
| 611 |
|
| 612 |
file = new File(path); |
| 613 |
|
| 614 |
if(file.delete()) {
|
| 615 |
sendRemovedMessage(fileId, chunkNo); |
| 616 |
storedChunks.remove(key); |
| 617 |
} |
| 618 |
} |
| 619 |
|
| 620 |
setAvailableSpace(desiredSpace); |
| 621 |
|
| 622 |
return true; |
| 623 |
} |
| 624 |
|
| 625 |
public boolean intrepertRemovedMessage(MessageHeader h) { |
| 626 |
String fileId, chunkNo, senderId, key;
|
| 627 |
|
| 628 |
fileId = h.getFileId(); |
| 629 |
chunkNo = h.getChunkNumber(); |
| 630 |
senderId = h.getSenderId(); |
| 631 |
key = fileId + ":" + chunkNo;
|
| 632 |
|
| 633 |
if(checkIfPeerStoredFile(fileId)) {
|
| 634 |
if(numberOfChunksConfirmations.containsKey(key)) {
|
| 635 |
numberOfChunksConfirmations.put(key, numberOfChunksConfirmations.get(key) - 1);
|
| 636 |
} |
| 637 |
if(this.colaborativePeers.containsKey(key)) { |
| 638 |
this.colaborativePeers.get(key).remove(Integer.parseInt(senderId)); |
| 639 |
} |
| 640 |
if(storedChunks.containsKey(key)) {
|
| 641 |
return storedChunks.get(key).getReplicationDegree() < numberOfChunksConfirmations.get(key);
|
| 642 |
} |
| 643 |
} |
| 644 |
|
| 645 |
return true; |
| 646 |
} |
| 647 |
|
| 648 |
public int getNumberOfChunks(String file_id) |
| 649 |
{
|
| 650 |
if(numberOfFileChunks.containsKey(file_id)) {
|
| 651 |
return numberOfFileChunks.get(file_id);
|
| 652 |
} |
| 653 |
|
| 654 |
return -1; |
| 655 |
} |
| 656 |
|
| 657 |
public Chunk getFileChunkRepDegree(String fileId, String chunkNo) { |
| 658 |
|
| 659 |
if(storedChunks.containsKey(fileId + ":" + chunkNo)) { |
| 660 |
return storedChunks.get(fileId + ":" + chunkNo); |
| 661 |
} |
| 662 |
|
| 663 |
return null; |
| 664 |
} |
| 665 |
|
| 666 |
public void intrepertGetChunkMessage(MessageHeader header) { |
| 667 |
|
| 668 |
String key = header.getFileId() + ":" + header.getChunkNumber(); |
| 669 |
Chunk toSend; |
| 670 |
SendChunkMessageProtocol p; |
| 671 |
|
| 672 |
if(storedChunks.containsKey(key)) {
|
| 673 |
System.out.println("Going to send chunk no " + header.getChunkNumber()); |
| 674 |
toSend = storedChunks.get(key); |
| 675 |
|
| 676 |
p = new SendChunkMessageProtocol(toSend, this); |
| 677 |
|
| 678 |
p.run(); |
| 679 |
} |
| 680 |
else {
|
| 681 |
System.out.println("I dont have that chunk"); |
| 682 |
} |
| 683 |
} |
| 684 |
|
| 685 |
|
| 686 |
@SuppressWarnings({ "unchecked" }) |
| 687 |
public void loadFromDisk() throws IOException, Exception |
| 688 |
{
|
| 689 |
String path = Constants.DATABASE_DIR + "peer" + this.serverID + '/'; |
| 690 |
|
| 691 |
|
| 692 |
String path1 = path + "storedChunks.ser"; |
| 693 |
Path p = Paths.get(path1); |
| 694 |
if (Files.exists(p)) {
|
| 695 |
FileInputStream fis = new FileInputStream(path1); |
| 696 |
ObjectInputStream ois = new ObjectInputStream(fis); |
| 697 |
this.setStoredChunks( (ConcurrentHashMap<String, Chunk>)ois.readObject()); |
| 698 |
fis.close(); |
| 699 |
ois.close(); |
| 700 |
} |
| 701 |
|
| 702 |
|
| 703 |
|
| 704 |
|
| 705 |
String path2 = path + "numberOfFileChunks.ser"; |
| 706 |
Path p2 = Paths.get(path2); |
| 707 |
if (Files.exists(p2)) {
|
| 708 |
FileInputStream fis2 = new FileInputStream(path2); |
| 709 |
ObjectInputStream ois2 = new ObjectInputStream(fis2); |
| 710 |
this.setNumberOfFileChunks((ConcurrentHashMap<String, Integer>)ois2.readObject()); |
| 711 |
fis2.close(); |
| 712 |
ois2.close(); |
| 713 |
} |
| 714 |
|
| 715 |
|
| 716 |
String path3 = path + "colaborativePeers.ser"; |
| 717 |
Path p3 = Paths.get(path3); |
| 718 |
if (Files.exists(p3)) {
|
| 719 |
FileInputStream fis3 = new FileInputStream(path3); |
| 720 |
ObjectInputStream ois3 = new ObjectInputStream(fis3); |
| 721 |
this.setColaborativePeers((ConcurrentHashMap<String, HashSet<Integer>>)ois3.readObject()); |
| 722 |
fis3.close(); |
| 723 |
ois3.close(); |
| 724 |
} |
| 725 |
|
| 726 |
|
| 727 |
String path4 = path + "numberOfChunksConfirmations.ser"; |
| 728 |
Path p4 = Paths.get(path4); |
| 729 |
if (Files.exists(p4)) {
|
| 730 |
FileInputStream fis4 = new FileInputStream(path4); |
| 731 |
ObjectInputStream ois4 = new ObjectInputStream(fis4); |
| 732 |
this.setNumberOfChunksConfirmations((ConcurrentHashMap<String, Integer>)ois4.readObject()); |
| 733 |
fis4.close(); |
| 734 |
ois4.close(); |
| 735 |
} |
| 736 |
|
| 737 |
|
| 738 |
String path5 = path + "chunksToRestore.ser"; |
| 739 |
Path p5 = Paths.get(path5); |
| 740 |
if (Files.exists(p5)) {
|
| 741 |
FileInputStream fis5 = new FileInputStream(path5); |
| 742 |
ObjectInputStream ois5 = new ObjectInputStream(fis5); |
| 743 |
this.setChunksToRestore((ConcurrentHashMap<String, Integer>)ois5.readObject()); |
| 744 |
fis5.close(); |
| 745 |
ois5.close(); |
| 746 |
} |
| 747 |
|
| 748 |
String path6 = path + "recoveredChunks.ser"; |
| 749 |
Path p6 = Paths.get(path6); |
| 750 |
if (Files.exists(p6)) {
|
| 751 |
FileInputStream fis6 = new FileInputStream(path6); |
| 752 |
ObjectInputStream ois6 = new ObjectInputStream(fis6); |
| 753 |
this.setRecoveredChunks((ConcurrentHashMap<String, Chunk>)ois6.readObject()); |
| 754 |
fis6.close(); |
| 755 |
ois6.close(); |
| 756 |
} |
| 757 |
|
| 758 |
String path7 = path + "numberOfFileChunksToBeRestored.ser"; |
| 759 |
Path p7 = Paths.get(path7); |
| 760 |
if (Files.exists(p7)) {
|
| 761 |
FileInputStream fis7 = new FileInputStream(path7); |
| 762 |
ObjectInputStream ois7 = new ObjectInputStream(fis7); |
| 763 |
this.setNumberOfFileChunksToBeRestored((ConcurrentLinkedQueue<String>)ois7.readObject()); |
| 764 |
fis7.close(); |
| 765 |
ois7.close(); |
| 766 |
} |
| 767 |
} |
| 768 |
|
| 769 |
@SuppressWarnings("resource") |
| 770 |
public synchronized void saveToDisk() throws IOException |
| 771 |
{
|
| 772 |
String path = Constants.DATABASE_DIR + "peer" + this.serverID + '/'; |
| 773 |
|
| 774 |
checkOrCreateDirectory(path); |
| 775 |
|
| 776 |
String path1 = path + "storedChunks.ser"; |
| 777 |
FileOutputStream fos1 = new FileOutputStream(path1); |
| 778 |
ObjectOutputStream oos1 = new ObjectOutputStream(fos1); |
| 779 |
oos1.writeObject(storedChunks); |
| 780 |
|
| 781 |
String path2 = path + "numberOfFileChunks.ser"; |
| 782 |
FileOutputStream fos2 = new FileOutputStream(path2); |
| 783 |
ObjectOutputStream oos2 = new ObjectOutputStream(fos2); |
| 784 |
oos2.writeObject(numberOfFileChunks); |
| 785 |
|
| 786 |
String path3 = path + "colaborativePeers.ser"; |
| 787 |
FileOutputStream fos3 = new FileOutputStream(path3); |
| 788 |
ObjectOutputStream oos3 = new ObjectOutputStream(fos3); |
| 789 |
oos3.writeObject(colaborativePeers); |
| 790 |
|
| 791 |
String path4 = path + "numberOfChunksConfirmations.ser"; |
| 792 |
FileOutputStream fos4 = new FileOutputStream(path4); |
| 793 |
ObjectOutputStream oos4 = new ObjectOutputStream(fos4); |
| 794 |
oos4.writeObject(numberOfChunksConfirmations); |
| 795 |
|
| 796 |
String path5 = path + "chunksToRestore.ser"; |
| 797 |
FileOutputStream fos5 = new FileOutputStream(path5); |
| 798 |
ObjectOutputStream oos5 = new ObjectOutputStream(fos5); |
| 799 |
oos5.writeObject(chunksToRestore); |
| 800 |
|
| 801 |
String path6 = path + "recoveredChunks.ser"; |
| 802 |
FileOutputStream fos6 = new FileOutputStream(path6); |
| 803 |
ObjectOutputStream oos6 = new ObjectOutputStream(fos6); |
| 804 |
oos6.writeObject(recoveredChunks); |
| 805 |
|
| 806 |
String path7 = path + "numberOfFileChunksToBeRestored.ser"; |
| 807 |
FileOutputStream fos7 = new FileOutputStream(path7); |
| 808 |
ObjectOutputStream oos7 = new ObjectOutputStream(fos7); |
| 809 |
oos7.writeObject(numberOfFileChunksToBeRestored); |
| 810 |
} |
| 811 |
|
| 812 |
public void setStoredChunks(ConcurrentHashMap<String, Chunk> sc) |
| 813 |
{
|
| 814 |
storedChunks = sc; |
| 815 |
} |
| 816 |
|
| 817 |
public void setNumberOfFileChunks(ConcurrentHashMap<String, Integer> si) |
| 818 |
{
|
| 819 |
numberOfFileChunks = si; |
| 820 |
} |
| 821 |
|
| 822 |
public void setColaborativePeers(ConcurrentHashMap<String, HashSet<Integer>> sh) |
| 823 |
{
|
| 824 |
colaborativePeers = sh; |
| 825 |
} |
| 826 |
|
| 827 |
public void setNumberOfChunksConfirmations(ConcurrentHashMap<String, Integer> si) |
| 828 |
{
|
| 829 |
numberOfChunksConfirmations = si; |
| 830 |
} |
| 831 |
|
| 832 |
public void setChunksToRestore(ConcurrentHashMap<String, Integer> si) |
| 833 |
{
|
| 834 |
chunksToRestore = si; |
| 835 |
} |
| 836 |
|
| 837 |
public void setRecoveredChunks(ConcurrentHashMap<String, Chunk> sc) |
| 838 |
{
|
| 839 |
recoveredChunks = sc; |
| 840 |
} |
| 841 |
|
| 842 |
public void setNumberOfFileChunksToBeRestored(ConcurrentLinkedQueue<String> s) |
| 843 |
{
|
| 844 |
numberOfFileChunksToBeRestored = s; |
| 845 |
} |
| 846 |
} |