コード例 #1
0
ファイル: ServerData.java プロジェクト: mcmyffin/BAI-4-RN
  public synchronized boolean addUserClient(String username, ClientThread clientThread) {
    checkNotNull(username);
    checkNotNull(clientThread);
    if (takenUsernames.containsKey(username)) return false;

    takenUsernames.put(username, clientThread);
    return true;
  }
コード例 #2
0
ファイル: DataDefinitionImpl.java プロジェクト: qcadoo/qcadoo
 @Override
 public FieldDefinition getField(final String fieldName) {
   if (fields.containsKey(fieldName)) {
     return fields.get(fieldName);
   } else if (priorityField != null && priorityField.getName().equals(fieldName)) {
     return priorityField;
   } else {
     return null;
   }
 }
コード例 #3
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ファイル: ServerData.java プロジェクト: mcmyffin/BAI-4-RN
  public boolean renameChatroom(Chatroom chatroom, String newName) {
    checkNotNull(chatroom);
    checkNotNull(newName);
    if (isChatroomExisting(newName)) return false;
    if (newName.equals(defaultChatName)) return false;

    String oldName = chatroom.getName();
    chatrooms.remove(oldName);
    chatrooms.put(newName, chatroom);
    return true;
  }
コード例 #4
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ファイル: ServerData.java プロジェクト: mcmyffin/BAI-4-RN
 public synchronized boolean addChatroom(Chatroom chatroom) {
   checkNotNull(chatroom);
   if (isChatroomExisting(chatroom.getName())) return false;
   if (chatroom.getName().equals(defaultChatName)) return false;
   chatrooms.put(chatroom.getName(), chatroom);
   return true;
 }
コード例 #5
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ファイル: ServerData.java プロジェクト: mcmyffin/BAI-4-RN
  public synchronized boolean removeUserClient(ClientThread client) {
    checkNotNull(client);
    if (!containsUser(client.getData().getUsername())) return false;

    takenUsernames.remove(client.getData().getUsername());
    client.getData().setUsername(null);
    return true;
  }
コード例 #6
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 @Override
 public List<Protos.Key> serializeToProtobuf() {
   lock.lock();
   try {
     // Most of the serialization work is delegated to the basic key chain, which will serialize
     // the bulk of the
     // data (handling encryption along the way), and letting us patch it up with the extra data we
     // care about.
     LinkedList<Protos.Key> entries = newLinkedList();
     if (seed != null) {
       Protos.Key.Builder mnemonicEntry = BasicKeyChain.serializeEncryptableItem(seed);
       mnemonicEntry.setType(Protos.Key.Type.DETERMINISTIC_MNEMONIC);
       entries.add(mnemonicEntry.build());
     }
     Map<ECKey, Protos.Key.Builder> keys = basicKeyChain.serializeToEditableProtobufs();
     for (Map.Entry<ECKey, Protos.Key.Builder> entry : keys.entrySet()) {
       DeterministicKey key = (DeterministicKey) entry.getKey();
       Protos.Key.Builder proto = entry.getValue();
       proto.setType(Protos.Key.Type.DETERMINISTIC_KEY);
       final Protos.DeterministicKey.Builder detKey = proto.getDeterministicKeyBuilder();
       detKey.setChainCode(ByteString.copyFrom(key.getChainCode()));
       for (ChildNumber num : key.getPath()) detKey.addPath(num.i());
       if (key.equals(externalKey)) {
         detKey.setIssuedSubkeys(issuedExternalKeys);
         detKey.setLookaheadSize(lookaheadSize);
       } else if (key.equals(internalKey)) {
         detKey.setIssuedSubkeys(issuedInternalKeys);
         detKey.setLookaheadSize(lookaheadSize);
       }
       // Flag the very first key of following keychain.
       if (entries.isEmpty() && isFollowing()) {
         detKey.setIsFollowing(true);
       }
       if (key.getParent() != null) {
         // HD keys inherit the timestamp of their parent if they have one, so no need to serialize
         // it.
         proto.clearCreationTimestamp();
       }
       entries.add(proto.build());
     }
     return entries;
   } finally {
     lock.unlock();
   }
 }
コード例 #7
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 private static void informListenerForNewTransactions(
     Block block,
     NewBlockType newBlockType,
     @Nullable List<Sha256Hash> filteredTxHashList,
     @Nullable Map<Sha256Hash, Transaction> filteredTxn,
     StoredBlock newStoredBlock,
     boolean first,
     BlockChainListener listener,
     Set<Sha256Hash> falsePositives)
     throws VerificationException {
   if (block.transactions != null) {
     // If this is not the first wallet, ask for the transactions to be duplicated before being
     // given
     // to the wallet when relevant. This ensures that if we have two connected wallets and a tx
     // that
     // is relevant to both of them, they don't end up accidentally sharing the same object (which
     // can
     // result in temporary in-memory corruption during re-orgs). See bug 257. We only duplicate in
     // the case of multiple wallets to avoid an unnecessary efficiency hit in the common case.
     sendTransactionsToListener(
         newStoredBlock, newBlockType, listener, 0, block.transactions, !first, falsePositives);
   } else if (filteredTxHashList != null) {
     checkNotNull(filteredTxn);
     // We must send transactions to listeners in the order they appeared in the block - thus we
     // iterate over the
     // set of hashes and call sendTransactionsToListener with individual txn when they have not
     // already been
     // seen in loose broadcasts - otherwise notifyTransactionIsInBlock on the hash.
     int relativityOffset = 0;
     for (Sha256Hash hash : filteredTxHashList) {
       Transaction tx = filteredTxn.get(hash);
       if (tx != null) {
         sendTransactionsToListener(
             newStoredBlock,
             newBlockType,
             listener,
             relativityOffset,
             Collections.singletonList(tx),
             !first,
             falsePositives);
       } else {
         if (listener.notifyTransactionIsInBlock(
             hash, newStoredBlock, newBlockType, relativityOffset)) {
           falsePositives.remove(hash);
         }
       }
       relativityOffset++;
     }
   }
 }
コード例 #8
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ファイル: DataDefinitionImpl.java プロジェクト: qcadoo/qcadoo
 @Override
 public EntityHookDefinition getHook(
     final String type, final String className, final String methodName) {
   EntityHookDefinition hook =
       hooksByMethodPath.get(
           type.toUpperCase(Locale.ENGLISH) + "." + className + "." + methodName);
   checkNotNull(
       hook,
       "Cannot find hook "
           + type.toUpperCase(Locale.ENGLISH)
           + "."
           + className
           + "."
           + methodName
           + " for dataDefinition "
           + this);
   return hook;
 }
コード例 #9
0
ファイル: ServerData.java プロジェクト: mcmyffin/BAI-4-RN
 public synchronized ClientThread getChatClientByUsername(String username)
     throws UsernameNotFoundException {
   checkNotNull(username);
   if (!containsUser(username)) throw new UsernameNotFoundException(username);
   return takenUsernames.get(username);
 }
コード例 #10
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  // expensiveChecks enables checks that require looking at blocks further back in the chain
  // than the previous one when connecting (eg median timestamp check)
  // It could be exposed, but for now we just set it to shouldVerifyTransactions()
  private void connectBlock(
      final Block block,
      StoredBlock storedPrev,
      boolean expensiveChecks,
      @Nullable final List<Sha256Hash> filteredTxHashList,
      @Nullable final Map<Sha256Hash, Transaction> filteredTxn)
      throws BlockStoreException, VerificationException, PrunedException {
    checkState(lock.isHeldByCurrentThread());
    boolean filtered = filteredTxHashList != null && filteredTxn != null;
    // Check that we aren't connecting a block that fails a checkpoint check
    if (!params.passesCheckpoint(storedPrev.getHeight() + 1, block.getHash()))
      throw new VerificationException(
          "Block failed checkpoint lockin at " + (storedPrev.getHeight() + 1));
    if (shouldVerifyTransactions()) {
      checkNotNull(block.transactions);
      for (Transaction tx : block.transactions)
        if (!tx.isFinal(storedPrev.getHeight() + 1, block.getTimeSeconds()))
          throw new VerificationException("Block contains non-final transaction");
    }

    StoredBlock head = getChainHead();
    if (storedPrev.equals(head)) {
      if (filtered && filteredTxn.size() > 0) {
        log.debug(
            "Block {} connects to top of best chain with {} transaction(s) of which we were sent {}",
            block.getHashAsString(),
            filteredTxHashList.size(),
            filteredTxn.size());
        for (Sha256Hash hash : filteredTxHashList) log.debug("  matched tx {}", hash);
      }
      if (expensiveChecks
          && block.getTimeSeconds() <= getMedianTimestampOfRecentBlocks(head, blockStore))
        throw new VerificationException("Block's timestamp is too early");

      // This block connects to the best known block, it is a normal continuation of the system.
      TransactionOutputChanges txOutChanges = null;
      if (shouldVerifyTransactions())
        txOutChanges = connectTransactions(storedPrev.getHeight() + 1, block);
      StoredBlock newStoredBlock =
          addToBlockStore(
              storedPrev, block.transactions == null ? block : block.cloneAsHeader(), txOutChanges);
      setChainHead(newStoredBlock);
      log.debug("Chain is now {} blocks high, running listeners", newStoredBlock.getHeight());
      informListenersForNewBlock(
          block, NewBlockType.BEST_CHAIN, filteredTxHashList, filteredTxn, newStoredBlock);
    } else {
      // This block connects to somewhere other than the top of the best known chain. We treat these
      // differently.
      //
      // Note that we send the transactions to the wallet FIRST, even if we're about to re-organize
      // this block
      // to become the new best chain head. This simplifies handling of the re-org in the Wallet
      // class.
      StoredBlock newBlock = storedPrev.build(block);
      boolean haveNewBestChain = newBlock.moreWorkThan(head);
      if (haveNewBestChain) {
        log.info("Block is causing a re-organize");
      } else {
        StoredBlock splitPoint = findSplit(newBlock, head, blockStore);
        if (splitPoint != null && splitPoint.equals(newBlock)) {
          // newStoredBlock is a part of the same chain, there's no fork. This happens when we
          // receive a block
          // that we already saw and linked into the chain previously, which isn't the chain head.
          // Re-processing it is confusing for the wallet so just skip.
          log.warn(
              "Saw duplicated block in main chain at height {}: {}",
              newBlock.getHeight(),
              newBlock.getHeader().getHash());
          return;
        }
        if (splitPoint == null) {
          // This should absolutely never happen
          // (lets not write the full block to disk to keep any bugs which allow this to happen
          //  from writing unreasonable amounts of data to disk)
          throw new VerificationException("Block forks the chain but splitPoint is null");
        } else {
          // We aren't actually spending any transactions (yet) because we are on a fork
          addToBlockStore(storedPrev, block);
          int splitPointHeight = splitPoint.getHeight();
          String splitPointHash = splitPoint.getHeader().getHashAsString();
          log.info(
              "Block forks the chain at height {}/block {}, but it did not cause a reorganize:\n{}",
              splitPointHeight,
              splitPointHash,
              newBlock.getHeader().getHashAsString());
        }
      }

      // We may not have any transactions if we received only a header, which can happen during fast
      // catchup.
      // If we do, send them to the wallet but state that they are on a side chain so it knows not
      // to try and
      // spend them until they become activated.
      if (block.transactions != null || filtered) {
        informListenersForNewBlock(
            block, NewBlockType.SIDE_CHAIN, filteredTxHashList, filteredTxn, newBlock);
      }

      if (haveNewBestChain) handleNewBestChain(storedPrev, newBlock, block, expensiveChecks);
    }
  }
コード例 #11
0
ファイル: ServerData.java プロジェクト: mcmyffin/BAI-4-RN
 public synchronized boolean removeChatroom(Chatroom chatroom) {
   checkNotNull(chatroom);
   if (!isChatroomExisting(chatroom.getName())) return false;
   chatrooms.remove(chatroom.getName());
   return true;
 }
コード例 #12
0
ファイル: ServerData.java プロジェクト: mcmyffin/BAI-4-RN
 public synchronized Chatroom getChatroomByName(String chatroom) throws ChatroomNotFoundExeption {
   checkNotNull(chatroom);
   if (chatroom.equals(defaultChatName)) return defaultChat;
   if (!chatrooms.containsKey(chatroom)) throw new ChatroomNotFoundExeption(chatroom);
   return chatrooms.get(chatroom);
 }
コード例 #13
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ファイル: ServerData.java プロジェクト: mcmyffin/BAI-4-RN
 public synchronized boolean isChatroomExisting(String chatroomName) {
   checkNotNull(chatroomName);
   return chatrooms.containsKey(chatroomName);
 }
コード例 #14
0
ファイル: ServerData.java プロジェクト: mcmyffin/BAI-4-RN
 public synchronized Collection<Chatroom> getChatrooms() {
   return Collections.unmodifiableCollection(chatrooms.values());
 }
コード例 #15
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ファイル: ServerData.java プロジェクト: mcmyffin/BAI-4-RN
 /** Chatroom operation * */
 public synchronized Set<String> getChatRoomNames() {
   return Collections.unmodifiableSet(chatrooms.keySet());
 }
コード例 #16
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ファイル: DataDefinitionImpl.java プロジェクト: qcadoo/qcadoo
 public void withField(final FieldDefinition field) {
   fields.put(field.getName(), field);
 }
コード例 #17
0
ファイル: DataDefinitionImpl.java プロジェクト: qcadoo/qcadoo
 public void addHook(final HooksTag tag, final EntityHookDefinition hook) {
   hook.initialize(this);
   hooksByMethodPath.put(tag.toString() + "." + hook.getName(), hook);
   entityHooks.put(tag, hook);
 }
コード例 #18
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ファイル: ServerData.java プロジェクト: mcmyffin/BAI-4-RN
 public synchronized boolean containsUser(String user) {
   return takenUsernames.containsKey(user);
 }