root / src / MDB.java
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| 1 | 1 | up20150487 | |
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| 2 | import java.net.DatagramPacket; |
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| 3 | import java.net.InetAddress; |
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| 4 | import java.util.ArrayList; |
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| 5 | import java.util.Random; |
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| 6 | import java.util.concurrent.ConcurrentHashMap; |
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| 7 | import java.io.ByteArrayOutputStream; |
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| 8 | import java.io.File; |
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| 9 | import java.io.FileOutputStream; |
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| 10 | |||
| 11 | public class MDB extends Channel { |
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| 12 | public MDB(PeersInfo peersInfo,ChannelsInfo cInfo, int id, InetAddress addr, int port) { |
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| 13 | super(peersInfo, cInfo, id, addr, port);
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| 14 | this.type = ChannelType.MDB;
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| 15 | System.out.println("MDB channel initialized."); |
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| 16 | } |
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| 17 | |||
| 18 | @Override
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| 19 | public void run() { |
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| 20 | |||
| 21 | byte[] msgData = new byte[65000]; |
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| 22 | while (true) { |
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| 23 | |||
| 24 | try {
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| 25 | DatagramPacket receivedPacket = new DatagramPacket(msgData, msgData.length); |
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| 26 | cInfo.socketMDB.receive(receivedPacket); |
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| 27 | |||
| 28 | Message msg = new Message(msgData, receivedPacket.getLength());
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| 29 | |||
| 30 | if (msg.getSenderID() != this.peerId) { |
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| 31 | System.out.println("_________________________________"); |
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| 32 | if(msg.getProtocolVersion().equals("2.0")){ |
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| 33 | |||
| 34 | |||
| 35 | handleMessageENH(msg); |
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| 36 | }else if(msg.getProtocolVersion().equals("1.0")){ |
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| 37 | handleMessage(msg); // por alterar
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| 38 | } |
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| 39 | |||
| 40 | for (ConcurrentHashMap.Entry<String, Chunk> entry : peersInfo.storage.entrySet()) { |
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| 41 | String key = entry.getKey().toString();
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| 42 | Chunk currChunk = entry.getValue(); |
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| 43 | System.out.println("::::::::::::::::::::::::::::"); |
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| 44 | System.out.println("File id e No: " + key); |
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| 45 | for (int i = 0; i < currChunk.getPeersId().size(); i++) { |
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| 46 | System.out.println("PeerId(que guardaram a chunk)-> peer" + currChunk.getPeersId().get(i)); |
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| 47 | |||
| 48 | } |
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| 49 | System.out.println("CurrReplicationDegree->"+ currChunk.getCurrReplicationDegree()); |
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| 50 | System.out.println("ReplicationDegree->"+ currChunk.getReplicationDegree()); |
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| 51 | } |
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| 52 | |||
| 53 | System.out.println("--------------------------"); |
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| 54 | } |
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| 55 | } catch (Exception e) { |
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| 56 | e.printStackTrace(); |
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| 57 | } |
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| 58 | |||
| 59 | } |
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| 60 | |||
| 61 | } |
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| 62 | public void handleMessage(Message msg) { |
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| 63 | |||
| 64 | boolean doBackup = false; |
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| 65 | System.out.println(msg.getFileID());
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| 66 | |||
| 67 | if (peersInfo.storage.get(msg.getFileID() + ":" + msg.getChunkNo()) == null) { |
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| 68 | System.out.println("A chunk->" + Integer.toString(msg.getChunkNo()) + " não existe."); |
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| 69 | System.out.println("Criar com ReplicationDegree de ->" + Integer.toString(msg.getReplicationDegree())); |
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| 70 | Chunk chunk = new Chunk(msg.getSenderID(), msg.getFileID(), msg.getChunkNo(), msg.getBody().length, msg.getBody(),
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| 71 | msg.getReplicationDegree()); |
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| 72 | peersInfo.storage.put(msg.getFileID() + ":" + Integer.toString(msg.getChunkNo()), chunk); |
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| 73 | doBackup = true;
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| 74 | } else {
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| 75 | ArrayList<Integer> peers = peersInfo.storage.get(msg.getFileID() + ":" +Integer.toString( msg.getChunkNo())).getPeersId(); |
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| 76 | if (peers.contains(this.peerId)) { |
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| 77 | } else {
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| 78 | doBackup = true;
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| 79 | } |
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| 80 | |||
| 81 | } |
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| 82 | Chunk chunk = peersInfo.storage.get(msg.getFileID() + ":" + Integer.toString(msg.getChunkNo())); |
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| 83 | if (doBackup) {
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| 84 | System.out.println("Entra em doBackup chunk Nº->" + Integer.toString(chunk.getChunkNo())); |
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| 85 | System.out.println("CurrRepricationDegree->" |
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| 86 | + Integer.toString(chunk.getCurrReplicationDegree()));
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| 87 | System.out.println("ReplicationDegree->" + Integer.toString(chunk.getReplicationDegree())); |
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| 88 | Random random = new Random(); |
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| 89 | int delay = random.nextInt(200); |
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| 90 | try {
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| 91 | Thread.sleep(delay);
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| 92 | } catch (Exception e) { |
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| 93 | |||
| 94 | } |
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| 95 | System.out.println("Faz Thread.sleep()->"+Integer.toString(delay) ); |
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| 96 | System.out.println("CurrRepricationDegree->" |
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| 97 | + Integer.toString(chunk.getCurrReplicationDegree()));
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| 98 | System.out.println("ReplicationDegree->" + Integer.toString(chunk.getReplicationDegree())); |
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| 99 | |||
| 100 | |||
| 101 | System.out.println("O peer"+ this.peerId +" guarda chunk" + Integer.toString(chunk.getChunkNo())); |
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| 102 | String chunkno = String.valueOf(chunk.getChunkNo()); |
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| 103 | String chunkFileName = "./peer" + this.peerId + "/" + "backup/" + chunk.getFileID() + "/chk" + chunkno |
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| 104 | + ".chunk";
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| 105 | File newChunkFile = new File(chunkFileName); |
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| 106 | try {
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| 107 | System.out.println("cria o ficheiro em " + chunkFileName); |
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| 108 | if (!newChunkFile.exists()) {
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| 109 | |||
| 110 | newChunkFile.getParentFile().mkdirs(); |
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| 111 | newChunkFile.createNewFile(); |
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| 112 | } |
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| 113 | FileOutputStream putChunkBody = new FileOutputStream(newChunkFile); |
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| 114 | putChunkBody.write(chunk.getData()); |
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| 115 | putChunkBody.close(); |
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| 116 | |||
| 117 | if(peersInfo.spaceUsedOnDisk.get(this.peerId)==null){ |
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| 118 | peersInfo.spaceUsedOnDisk.put(this.peerId, 0); |
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| 119 | } |
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| 120 | int space = peersInfo.spaceUsedOnDisk.get(this.peerId); |
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| 121 | space = space + chunk.getData().length; |
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| 122 | peersInfo.spaceUsedOnDisk.replace(this.peerId, space);
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| 123 | |||
| 124 | |||
| 125 | |||
| 126 | String[] args = new String[] { String.valueOf(chunk.getChunkNo()) }; |
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| 127 | byte[] body = new byte[1]; |
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| 128 | peersInfo.storage.get(msg.getFileID() + ":" + Integer.toString(msg.getChunkNo())).addPeersId(this.peerId); |
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| 129 | peersInfo.storage.get(msg.getFileID() + ":" + Integer.toString(msg.getChunkNo())).updateCurrReplicationDegree(1);// aumenta 1 |
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| 130 | |||
| 131 | try {
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| 132 | |||
| 133 | byte[] msgstore = createMessage("STORED", msg.getProtocolVersion(), this.peerId, msg.getFileID(), args, null); |
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| 134 | Message storedMessage = new Message(msgstore, msgstore.length);
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| 135 | this.cInfo.send(storedMessage, this.cInfo.socketMC, this.cInfo.MCa, this.cInfo.MCp); |
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| 136 | |||
| 137 | } catch (Exception e) { |
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| 138 | e.printStackTrace(); |
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| 139 | } |
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| 140 | |||
| 141 | } catch (Exception e) { |
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| 142 | e.printStackTrace(); |
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| 143 | } |
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| 144 | |||
| 145 | |||
| 146 | } |
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| 147 | Peer.serialize_storage(this.peersInfo, this.peerId); |
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| 148 | |||
| 149 | } |
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| 150 | |||
| 151 | public void handleMessageENH(Message msg) { |
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| 152 | |||
| 153 | boolean doBackup = false; |
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| 154 | |||
| 155 | if (peersInfo.storage.get(msg.getFileID() + ":" + msg.getChunkNo()) == null) { |
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| 156 | System.out.println("A chunk->" + Integer.toString(msg.getChunkNo()) + " não existe."); |
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| 157 | System.out.println("Criar com ReplicationDegree de ->" + Integer.toString(msg.getReplicationDegree())); |
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| 158 | Chunk chunk = new Chunk(msg.getSenderID(), msg.getFileID(), msg.getChunkNo(), 3, msg.getBody(), |
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| 159 | msg.getReplicationDegree()); |
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| 160 | peersInfo.storage.put(msg.getFileID() + ":" + Integer.toString(msg.getChunkNo()), chunk); |
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| 161 | doBackup = true;
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| 162 | } else {
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| 163 | ArrayList<Integer> peers = peersInfo.storage.get(msg.getFileID() + ":" +Integer.toString( msg.getChunkNo())).getPeersId(); |
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| 164 | if (peers.contains(this.peerId)) { |
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| 165 | |||
| 166 | } else {
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| 167 | doBackup = true;
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| 168 | } |
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| 169 | |||
| 170 | } |
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| 171 | Chunk chunk = peersInfo.storage.get(msg.getFileID() + ":" + Integer.toString(msg.getChunkNo())); |
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| 172 | if (doBackup) {
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| 173 | System.out.println("Entra em doBackup chunk Nº->" + Integer.toString(chunk.getChunkNo())); |
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| 174 | System.out.println("CurrRepricationDegree->" |
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| 175 | + Integer.toString(chunk.getCurrReplicationDegree()));
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| 176 | System.out.println("ReplicationDegree->" + Integer.toString(chunk.getReplicationDegree())); |
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| 177 | Random random = new Random(); |
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| 178 | int delay = random.nextInt(200); |
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| 179 | try {
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| 180 | Thread.sleep(delay);
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| 181 | } catch (Exception e) { |
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| 182 | |||
| 183 | } |
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| 184 | System.out.println("Faz Thread.sleep()->"+Integer.toString(delay) ); |
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| 185 | System.out.println("CurrRepricationDegree->" |
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| 186 | + Integer.toString(chunk.getCurrReplicationDegree()));
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| 187 | System.out.println("ReplicationDegree->" + Integer.toString(chunk.getReplicationDegree())); |
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| 188 | |||
| 189 | if (peersInfo.storage.get(msg.getFileID() + ":" + Integer.toString(msg.getChunkNo())).getCurrReplicationDegree() < peersInfo.getStorage().get(msg.getFileID() + ":" + Integer.toString(msg.getChunkNo())).getReplicationDegree()) { |
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| 190 | System.out.println("O peer"+ this.peerId +" guarda chunk" + Integer.toString(chunk.getChunkNo())); |
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| 191 | String chunkno = String.valueOf(chunk.getChunkNo()); |
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| 192 | String chunkFileName = "./peer" + this.peerId + "/" + "backup/" + chunk.getFileID() + "/chk" + chunkno |
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| 193 | + ".chunk";
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| 194 | File newChunkFile = new File(chunkFileName); |
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| 195 | try {
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| 196 | System.out.println("cria o ficheiro em " + chunkFileName); |
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| 197 | if (!newChunkFile.exists()) {
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| 198 | |||
| 199 | newChunkFile.getParentFile().mkdirs(); |
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| 200 | newChunkFile.createNewFile(); |
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| 201 | } |
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| 202 | FileOutputStream putChunkBody = new FileOutputStream(newChunkFile); |
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| 203 | putChunkBody.write(chunk.getData()); |
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| 204 | putChunkBody.close(); |
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| 205 | |||
| 206 | if(peersInfo.spaceUsedOnDisk.get(this.peerId)==null){ |
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| 207 | peersInfo.spaceUsedOnDisk.put(this.peerId, 0); |
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| 208 | } |
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| 209 | int space = peersInfo.spaceUsedOnDisk.get(this.peerId); |
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| 210 | space = space + chunk.getData().length; |
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| 211 | peersInfo.spaceUsedOnDisk.replace(this.peerId, space);
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| 212 | |||
| 213 | String[] args = new String[] { String.valueOf(chunk.getChunkNo()) }; |
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| 214 | byte[] body = new byte[1]; |
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| 215 | peersInfo.storage.get(msg.getFileID() + ":" + Integer.toString(msg.getChunkNo())).addPeersId(this.peerId); |
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| 216 | peersInfo.storage.get(msg.getFileID() + ":" + Integer.toString(msg.getChunkNo())).updateCurrReplicationDegree(1);// aumenta 1 |
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| 217 | |||
| 218 | try {
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| 219 | byte[] msgstore = createMessage("STORED", msg.getProtocolVersion(), this.peerId, msg.getFileID(), args, null); |
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| 220 | Message storedMessage = new Message(msgstore, msgstore.length);
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| 221 | this.cInfo.send(storedMessage, this.cInfo.socketMC, this.cInfo.MCa, this.cInfo.MCp); |
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| 222 | |||
| 223 | } catch (Exception e) { |
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| 224 | e.printStackTrace(); |
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| 225 | } |
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| 226 | |||
| 227 | } catch (Exception e) { |
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| 228 | e.printStackTrace(); |
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| 229 | } |
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| 230 | |||
| 231 | } else {}
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| 232 | } |
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| 233 | Peer.serialize_storage(this.peersInfo, this.peerId); |
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| 234 | } |
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| 235 | } |