31
|
1 package alice.jungle.transaction;
|
30
|
2
|
34
|
3 import java.io.IOException;
|
30
|
4 import java.util.Iterator;
|
|
5
|
35
|
6 import alice.jungle.codesegment.LogUpdateCodeSegment;
|
34
|
7 import alice.jungle.datasegment.store.operations.DefaultTreeOperationLogContainer;
|
|
8
|
30
|
9 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.core.Node;
|
|
10 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.persistent.ChangeList;
|
|
11 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.persistent.ChangeListWriter;
|
|
12 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.persistent.Result;
|
|
13 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.ChangeSet;
|
|
14 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.TreeNode;
|
|
15 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.logger.TreeOperationLog;
|
|
16 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations.TreeOperation;
|
|
17 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.AtomicReservableReference;
|
|
18 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.AtomicReservableReference.Reservation;
|
|
19 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.DefaultChangeSet;
|
|
20 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.DefaultTreeContext;
|
|
21 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.TransactionManager;
|
|
22 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.transaction.TreeContext;
|
|
23 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.DefaultEither;
|
|
24 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.DefaultError;
|
|
25 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
|
|
26 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;
|
42
|
27 import jungle.test.bbs.codesegment.NullCodeSegmentForUpdate;
|
30
|
28
|
|
29 public class NetworkTransactionManager<T extends TreeNode<T>> implements TransactionManager<T>
|
|
30 {
|
|
31
|
|
32 private final AtomicReservableReference<TreeContext<T>> repository;
|
|
33 private final TreeContext<T> tip;
|
|
34 private final ChangeListWriter writer;
|
|
35 private final String uuid;
|
|
36 private final String treeName;
|
42
|
37 private final String serverName;
|
30
|
38
|
32
|
39 public NetworkTransactionManager(String _treeName, ChangeListWriter _writer,TreeContext<T> _tip,
|
42
|
40 AtomicReservableReference<TreeContext<T>> _repository,String _uuid, String _serverName)
|
30
|
41 {
|
|
42 repository = _repository;
|
|
43 tip = _tip;
|
|
44 writer = _writer;
|
|
45 uuid = _uuid;
|
|
46 treeName = _treeName;
|
42
|
47 serverName = _serverName;
|
30
|
48 }
|
|
49
|
|
50 @Override
|
|
51 public Either<Error, TransactionManager<T>> commit(T _newRoot,final TreeOperationLog _log) {
|
|
52 ChangeSet cs = tip.getChangeSet();
|
|
53 long currentRevision = cs.revision();
|
|
54 long nextRevision = currentRevision + 1;
|
|
55
|
|
56 ChangeList list = new ChangeList() {
|
|
57 @Override
|
|
58 public Iterator<TreeOperation> iterator(){
|
|
59 return _log.iterator();
|
|
60 }
|
|
61 };
|
|
62
|
|
63 Node root = _newRoot.getAsNode();
|
|
64 DefaultChangeSet newCs = new DefaultChangeSet(root, cs, list, uuid, nextRevision);
|
|
65 DefaultTreeContext<T> newContext = new DefaultTreeContext<T>(_newRoot,newCs);
|
|
66
|
|
67 @SuppressWarnings("rawtypes")
|
|
68 Reservation reservation = repository.makeReservation(tip, newContext);
|
|
69 if(reservation == null) {
|
|
70 return DefaultEither.newA((Error)new DefaultError());
|
|
71 }
|
|
72 Result r = writer.write(list);
|
34
|
73 if(r != Result.SUCCESS) {
|
|
74 return DefaultEither.newA((Error)new DefaultError());
|
|
75 }
|
|
76 try {
|
42
|
77 putDataSegment(uuid, treeName, list);
|
34
|
78 } catch (IOException e) {
|
|
79 e.printStackTrace();
|
30
|
80 }
|
34
|
81 reservation.confirm();
|
42
|
82 TransactionManager<T> txManager = new NetworkTransactionManager<T>(treeName, writer, newContext, repository, uuid, serverName);
|
34
|
83 return DefaultEither.newB(txManager);
|
|
84 }
|
|
85
|
42
|
86 private void putDataSegment(String _uuid, String _treeName, Iterable<TreeOperation> _log) throws IOException {
|
34
|
87 DefaultTreeOperationLogContainer container = new DefaultTreeOperationLogContainer();
|
|
88 container.setTreeName(_treeName);
|
|
89 container.setUUID(_uuid);
|
|
90 container.unconvert(_log);
|
42
|
91 NullCodeSegmentForUpdate cs = new NullCodeSegmentForUpdate();
|
|
92 cs.ods.put("local", "log", container);
|
34
|
93
|
30
|
94 }
|
|
95
|
|
96 @Override
|
|
97 public long getRevision()
|
|
98 {
|
|
99 ChangeSet cs = tip.getChangeSet();
|
|
100 return cs.revision();
|
|
101 }
|
|
102
|
|
103 @Override
|
|
104 public String getUUID() {
|
|
105 return uuid;
|
|
106 }
|
|
107
|
|
108 }
|