/** {@inheritDoc} */
  @Override
  public Map<K, V> peekAll(
      @Nullable Collection<? extends K> keys,
      @Nullable GridPredicate<? super GridCacheEntry<K, V>>[] filter) {
    if (keys == null || keys.isEmpty()) return emptyMap();

    final Collection<K> skipped = new GridLeanSet<K>();

    final Map<K, V> map = peekAll0(keys, filter, skipped);

    if (map.size() + skipped.size() != keys.size()) {
      map.putAll(
          dht.peekAll(
              F.view(
                  keys,
                  new P1<K>() {
                    @Override
                    public boolean apply(K k) {
                      return !map.containsKey(k) && !skipped.contains(k);
                    }
                  }),
              filter));
    }

    return map;
  }
Exemplo n.º 2
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 /** {@inheritDoc} */
 @Override
 public void stopListenAsync(@Nullable GridInClosure<? super GridFuture<R>>... lsnr) {
   if (F.isEmpty(lsnr))
     synchronized (mux) {
       lsnrs.clear();
     }
   else
     synchronized (mux) {
       lsnrs.removeAll(F.asList(lsnr));
     }
 }
Exemplo n.º 3
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  /**
   * Creates signature for data.
   *
   * @param alg Algorithm.
   * @param prv Provider.
   * @param key Private key.
   * @param data Data.
   * @return Signature.
   * @throws GeneralSecurityException If any exception occurs while signature creation.
   */
  public static byte[] createSignature(String alg, String prv, PrivateKey key, byte[] data)
      throws GeneralSecurityException {
    assert !F.isEmpty(alg);
    assert !F.isEmpty(prv);
    assert key != null;
    assert data != null;

    Signature sign = Signature.getInstance(alg, prv);

    sign.initSign(key);
    sign.update(data);

    return sign.sign();
  }
 /** {@inheritDoc} */
 @Override
 public GridDeployment getDeployment(final GridUuid ldrId) {
   synchronized (mux) {
     return F.find(
         F.flat(cache.values()),
         null,
         new P1<SharedDeployment>() {
           @Override
           public boolean apply(SharedDeployment d) {
             return d.classLoaderId().equals(ldrId);
           }
         });
   }
 }
Exemplo n.º 5
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  /**
   * Executes example.
   *
   * @param args Command line arguments, none required.
   */
  public static void main(String[] args) {
    // Typedefs:
    // ---------
    // G -> GridFactory
    // CI1 -> GridInClosure
    // CO -> GridOutClosure
    // CA -> GridAbsClosure
    // F -> GridFunc

    // Data initialisation.
    Random rand = new Random();

    final int size = 20;

    Collection<Integer> nums = new ArrayList<Integer>(size);

    // Generate list of random integers.
    for (int i = 0; i < size; i++) {
      nums.add(rand.nextInt(size));
    }

    // Print generated list.
    X.println("Generated list:");

    F.forEach(nums, F.<Integer>print("", " "));

    // Get new unmodifiable collection with elements which value low than half generated list size.
    Collection<Integer> view =
        F.view(
            nums,
            new P1<Integer>() {
              @Override
              public boolean apply(Integer i) {
                return i < size / 2;
              }
            });

    // Print result.
    X.println("\nResult list:");

    F.forEach(view, F.<Integer>print("", " "));

    // Check for read only.
    try {
      view.add(12);
    } catch (Exception ignored) {
      X.println("\nView is read only.");
    }
  }
Exemplo n.º 6
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  /**
   * Prints a phrase on the grid nodes running anonymous closure objects and calculating total
   * number of letters.
   *
   * @param phrase Phrase to print on of the grid nodes.
   * @throws GridException If failed.
   */
  private static void countLettersClosure(String phrase) throws GridException {
    X.println(">>> Starting countLettersClosure() example...");

    // Explicitly execute the collection of callable objects and receive a result.
    Collection<Integer> results =
        G.grid()
            .call(
                SPREAD,
                new GridClosure<String, Integer>() { // Create executable logic.
                  @Override
                  public Integer apply(String word) {
                    // Print out a given word, just so we can
                    // see which node is doing what.
                    X.println(">>> Executing word: " + word);

                    // Return the length of a given word, i.e. number of letters.
                    return word.length();
                  }
                },
                Arrays.asList(phrase.split(" "))); // Collection of arguments for closures.

    // Add up all results using convenience 'sum()' method.
    int letterCnt = F.sum(results);

    X.println(">>>");
    X.println(">>> Finished execution of counting letters with closure based on GridGain 3.0 API.");
    X.println(">>> You should see the phrase '" + phrase + "' printed out on the nodes.");
    X.println(">>> Total number of letters in the phrase is '" + letterCnt + "'.");
    X.println(">>> Check all nodes for output (this node is also part of the grid).");
    X.println(">>>");
  }
Exemplo n.º 7
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  /**
   * Prints a phrase on the grid nodes running anonymous callable objects and calculating total
   * number of letters.
   *
   * @param phrase Phrase to print on of the grid nodes.
   * @throws GridException If failed.
   */
  private static void countLettersCallable(String phrase) throws GridException {
    X.println(">>> Starting countLettersCallable() example...");

    Collection<Callable<Integer>> calls = new HashSet<Callable<Integer>>();

    for (final String word : phrase.split(" "))
      calls.add(
          new GridCallable<Integer>() { // Create executable logic.
            @Override
            public Integer call() throws Exception {
              // Print out a given word, just so we can
              // see which node is doing what.
              X.println(">>> Executing word: " + word);

              // Return the length of a given word, i.e. number of letters.
              return word.length();
            }
          });

    // Explicitly execute the collection of callable objects and receive a result.
    Collection<Integer> results = G.grid().call(SPREAD, calls);

    // Add up all results using convenience 'sum()' method on GridFunc class.
    int letterCnt = F.sum(results);

    X.println(">>>");
    X.println(
        ">>> Finished execution of counting letters with callables based on GridGain 3.0 API.");
    X.println(">>> You should see the phrase '" + phrase + "' printed out on the nodes.");
    X.println(">>> Total number of letters in the phrase is '" + letterCnt + "'.");
    X.println(">>> Check all nodes for output (this node is also part of the grid).");
    X.println(">>>");
  }
Exemplo n.º 8
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  /**
   * Prints every word a phrase on different nodes.
   *
   * @param phrase Phrase from which to print words on different nodes.
   * @throws GridException If failed.
   */
  private static void spreadWordsClosure(String phrase) throws GridException {
    X.println(">>> Starting spreadWordsClosure() example...");

    // Splits the passed in phrase into words and prints every word
    // on a individual grid node. If there are more words than nodes -
    // some nodes will print more than one word.
    G.grid()
        .run(
            SPREAD,
            F.yield(
                phrase.split(" "),
                new GridInClosure<String>() {
                  @Override
                  public void apply(String word) {
                    X.println(word);
                  }
                }));

    // NOTE:
    //
    // Alternatively, you can use existing closure 'F.println()' to
    // print any yield result in 'F.yield()' like so:
    //
    // G.grid().run(SPREAD, F.yield(phrase.split(" "), F.println()));
    //

    X.println(">>>");
    X.println(
        ">>> Finished printing individual words on different nodes based on GridGain 3.0 API.");
    X.println(">>> Check all nodes for output (this node is also part of the grid).");
    X.println(">>>");
  }
  /** {@inheritDoc} */
  @Override
  public Map<K, V> peekAll(
      @Nullable Collection<? extends K> keys, @Nullable Collection<GridCachePeekMode> modes)
      throws GridException {
    if (keys == null || keys.isEmpty()) return emptyMap();

    final Collection<K> skipped = new GridLeanSet<K>();

    final Map<K, V> map =
        !modes.contains(PARTITIONED_ONLY)
            ? peekAll0(keys, modes, ctx.tm().localTxx(), skipped)
            : new GridLeanMap<K, V>(0);

    if (map.size() != keys.size() && !modes.contains(NEAR_ONLY)) {
      map.putAll(
          dht.peekAll(
              F.view(
                  keys,
                  new P1<K>() {
                    @Override
                    public boolean apply(K k) {
                      return !map.containsKey(k) && !skipped.contains(k);
                    }
                  }),
              modes));
    }

    return map;
  }
  /** {@inheritDoc} */
  @Override
  public V unswap(K key) throws GridException {
    ctx.denyOnFlags(F.asList(READ, SKIP_SWAP));

    // Unswap only from DHT. Near cache does not have swap storage.
    return dht.unswap(key);
  }
Exemplo n.º 11
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  /** {@inheritDoc} */
  @Override
  public boolean apply(@Nullable T1 t1, @Nullable T2 t2) {
    lazyCompile();

    if (expr != null) {
      JexlContext ctx = new MapContext();

      ctx.set(var1, t1);
      ctx.set(var2, t2);

      for (Map.Entry<String, Object> e : map.entrySet()) {
        ctx.set(e.getKey(), e.getValue());
      }

      try {
        Object obj = expr.evaluate(ctx);

        if (obj instanceof Boolean) {
          return (Boolean) obj;
        }
      } catch (Exception ex) {
        throw F.wrap(ex);
      }
    }

    return false;
  }
Exemplo n.º 12
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  /**
   * @param mapping Mapping to order.
   * @param committedVers Committed versions.
   * @param rolledbackVers Rolled back versions.
   */
  void orderCompleted(
      GridDistributedTxMapping<K, V> mapping,
      Collection<GridCacheVersion> committedVers,
      Collection<GridCacheVersion> rolledbackVers) {
    for (GridCacheTxEntry<K, V> txEntry : F.concat(false, mapping.reads(), mapping.writes())) {
      while (true) {
        GridDistributedCacheEntry<K, V> entry = (GridDistributedCacheEntry<K, V>) txEntry.cached();

        try {
          // Handle explicit locks.
          GridCacheVersion base =
              txEntry.explicitVersion() != null ? txEntry.explicitVersion() : xidVer;

          entry.doneRemote(xidVer, base, committedVers, rolledbackVers);

          if (ec()) entry.recheck();

          break;
        } catch (GridCacheEntryRemovedException ignored) {
          assert entry.obsoleteVersion() != null;

          if (log.isDebugEnabled())
            log.debug(
                "Replacing obsolete entry in remote transaction [entry="
                    + entry
                    + ", tx="
                    + this
                    + ']');

          // Replace the entry.
          txEntry.cached(cctx.cache().entryEx(txEntry.key()), entry.keyBytes());
        }
      }
    }
  }
Exemplo n.º 13
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  /**
   * Verifies signature for data.
   *
   * @param alg Algorithm.
   * @param prv Provider.
   * @param key Public key.
   * @param data Data.
   * @param sign Signature.
   * @return {@code true} if signature was verified, {@code false} - otherwise.
   * @throws GeneralSecurityException If any exception occurs while verifying.
   */
  public static boolean verifySignature(
      String alg, String prv, PublicKey key, byte[] data, byte[] sign)
      throws GeneralSecurityException {
    assert !F.isEmpty(alg);
    assert !F.isEmpty(prv);
    assert key != null;
    assert data != null;
    assert sign != null;

    Signature sign0 = Signature.getInstance(alg, prv);

    sign0.initVerify(key);
    sign0.update(data);

    return sign0.verify(sign);
  }
Exemplo n.º 14
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 /** {@inheritDoc} */
 @Override
 public <T> T affinityKey() {
   try {
     return (T) job.getDeployment().annotatedValue(job.getJob(), GridCacheAffinityMapped.class);
   } catch (GridException e) {
     throw F.wrap(e);
   }
 }
Exemplo n.º 15
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 /** {@inheritDoc} */
 @Override
 public String cacheName() {
   try {
     return (String) job.getDeployment().annotatedValue(job.getJob(), GridCacheName.class);
   } catch (GridException e) {
     throw F.wrap(e);
   }
 }
Exemplo n.º 16
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 /** {@inheritDoc} */
 @Override
 public R apply() {
   try {
     return applyx();
   } catch (GridException e) {
     throw F.wrap(e);
   }
 }
 /** {@inheritDoc} */
 @Override
 public boolean apply() {
   try {
     return applyx();
   } catch (GridException ex) {
     throw F.wrap(ex);
   }
 }
Exemplo n.º 18
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    /**
     * @param id ID.
     * @param name Name.
     * @param age Age.
     * @param orgId Organization ID.
     */
    private Person(int id, String name, int age, int orgId) {
      assert !F.isEmpty(name);
      assert age > 0;
      assert orgId > 0;

      this.id = id;
      this.name = name;
      this.age = age;
      this.orgId = orgId;
    }
Exemplo n.º 19
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  /**
   * @param keys Keys.
   * @param timeout Timeout.
   * @param tx Transaction.
   * @param filter Filter.
   * @return Future.
   */
  public GridFuture<Boolean> lockAllAsync(
      Collection<? extends K> keys,
      long timeout,
      @Nullable GridCacheTxLocalEx<K, V> tx,
      GridPredicate<? super GridCacheEntry<K, V>>[] filter) {
    if (F.isEmpty(keys)) {
      return new GridFinishedFuture<Boolean>(ctx.kernalContext(), true);
    }

    GridLocalLockFuture<K, V> fut =
        new GridLocalLockFuture<K, V>(ctx, keys, tx, this, timeout, filter);

    try {
      for (K key : keys) {
        while (true) {
          GridLocalCacheEntry<K, V> entry = null;

          try {
            entry = entryExx(key);

            if (!ctx.isAll(entry, filter)) {
              fut.onFailed();

              return fut;
            }

            // Removed exception may be thrown here.
            GridCacheMvccCandidate<K> cand = fut.addEntry(entry);

            if (cand == null && fut.isDone()) {
              return fut;
            }

            break;
          } catch (GridCacheEntryRemovedException ignored) {
            if (log().isDebugEnabled()) {
              log().debug("Got removed entry in lockAsync(..) method (will retry): " + entry);
            }
          }
        }
      }

      if (!ctx.mvcc().addFuture(fut))
        fut.onError(new GridException("Duplicate future ID (internal error): " + fut));

      // Must have future added prior to checking locks.
      fut.checkLocks();

      return fut;
    } catch (GridException e) {
      fut.onError(e);

      return fut;
    }
  }
  /**
   * Executes example.
   *
   * @param args Command line arguments, none required.
   */
  public static void main(String[] args) {
    // Typedefs:
    // ---------
    // G -> GridFactory
    // CI1 -> GridInClosure
    // CO -> GridOutClosure
    // CA -> GridAbsClosure
    // F -> GridFunc

    // Data initialisation.
    Random rand = new Random();

    final int size = 20;

    Collection<Integer> nums = new ArrayList<Integer>(size);

    // Generate list of random integers.
    for (int i = 0; i < size; i++) {
      nums.add(rand.nextInt(size));
    }

    // Print generated list.
    X.println("Generated list:");

    F.forEach(nums, F.<Integer>print("", " "));

    // Retain all elements which value low than half generated list size.
    Collection<Integer> res =
        F.retain(
            nums,
            true,
            new P1<Integer>() {
              @Override
              public boolean apply(Integer i) {
                return i < size / 2;
              }
            });

    // Print result.
    X.println("\nResult list:");

    F.forEach(res, F.<Integer>print("", " "));

    // Retain first half of result list.
    F.retain(res, false, res.size() / 2);

    // Print result.
    X.println("\nResult list:");

    F.forEach(res, F.<Integer>print("", " "));
  }
 /** {@inheritDoc} */
 @Override
 public Iterator<GridCacheEntry<K, V>> iterator() {
   return new EntryIterator(
       nearSet.iterator(),
       F.iterator0(
           dhtSet,
           false,
           new P1<GridCacheEntry<K, V>>() {
             @Override
             public boolean apply(GridCacheEntry<K, V> e) {
               return !GridNearCache.super.containsKey(e.getKey(), null);
             }
           }));
 }
  /** @return Involved nodes. */
  @Override
  public Collection<? extends GridNode> nodes() {
    return F.viewReadOnly(
        futures(),
        new GridClosure<GridFuture<?>, GridRichNode>() {
          @Nullable
          @Override
          public GridRichNode apply(GridFuture<?> f) {
            if (isMini(f)) return ((MiniFuture) f).node();

            return cctx.rich().rich(cctx.discovery().localNode());
          }
        });
  }
Exemplo n.º 23
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  /** @param mappings Mappings. */
  void addEntryMapping(@Nullable Map<UUID, GridDistributedTxMapping<K, V>> mappings) {
    if (!F.isEmpty(mappings)) {
      this.mappings.putAll(mappings);

      if (log.isDebugEnabled())
        log.debug(
            "Added mappings to transaction [locId="
                + cctx.nodeId()
                + ", mappings="
                + mappings
                + ", tx="
                + this
                + ']');
    }
  }
  /** {@inheritDoc} */
  @Override
  public GridFuture<Map<K, V>> getAllAsync(
      @Nullable Collection<? extends K> keys,
      @Nullable GridPredicate<? super GridCacheEntry<K, V>>[] filter) {
    ctx.denyOnFlag(LOCAL);

    if (F.isEmpty(keys))
      return new GridFinishedFuture<Map<K, V>>(ctx.kernalContext(), Collections.<K, V>emptyMap());

    GridCacheTxLocalAdapter<K, V> tx = ctx.tm().threadLocalTx();

    if (tx != null && !tx.implicit()) return ctx.wrapCloneMap(tx.getAllAsync(keys, filter));

    return loadAsync(keys, false, filter);
  }
  /**
   * @param ldr Loader.
   * @param nodeId Sender node ID.
   * @param req Request.
   * @return Remote transaction.
   * @throws GridException If failed.
   */
  @Nullable
  public GridNearTxRemote<K, V> startRemoteTx(
      ClassLoader ldr, UUID nodeId, GridDhtTxPrepareRequest<K, V> req) throws GridException {
    if (!F.isEmpty(req.nearWrites())) {
      GridNearTxRemote<K, V> tx =
          new GridNearTxRemote<K, V>(
              ldr,
              nodeId,
              req.nearNodeId(),
              req.threadId(),
              req.version(),
              req.commitVersion(),
              req.concurrency(),
              req.isolation(),
              req.isInvalidate(),
              req.timeout(),
              req.nearWrites(),
              ctx);

      if (!tx.empty()) {
        tx = ctx.tm().onCreated(tx);

        if (tx == null || !ctx.tm().onStarted(tx))
          throw new GridCacheTxRollbackException("Attempt to start a completed transaction: " + tx);

        // Prepare prior to reordering, so the pending locks added
        // in prepare phase will get properly ordered as well.
        tx.prepare();

        // Add remote candidates and reorder completed and uncompleted versions.
        tx.addRemoteCandidates(
            req.candidatesByKey(), req.committedVersions(), req.rolledbackVersions());

        if (req.concurrency() == EVENTUALLY_CONSISTENT) {
          if (log.isDebugEnabled())
            log.debug("Committing transaction during remote prepare: " + tx);

          tx.commit();

          if (log.isDebugEnabled()) log.debug("Committed transaction during remote prepare: " + tx);
        }
      }

      return tx;
    }

    return null;
  }
  /**
   * @param keys Keys to load.
   * @param reload Reload flag.
   * @param filter Filter.
   * @return Loaded values.
   */
  public GridFuture<Map<K, V>> loadAsync(
      @Nullable Collection<? extends K> keys,
      boolean reload,
      @Nullable GridPredicate<? super GridCacheEntry<K, V>>[] filter) {
    if (F.isEmpty(keys))
      return new GridFinishedFuture<Map<K, V>>(ctx.kernalContext(), Collections.<K, V>emptyMap());

    GridNearGetFuture<K, V> fut = new GridNearGetFuture<K, V>(ctx, keys, reload, null, filter);

    // Register future for responses.
    ctx.mvcc().addFuture(fut);

    fut.init();

    return ctx.wrapCloneMap(fut);
  }
  /**
   * @param cctx Context.
   * @param tx Transaction.
   * @param commit Commit flag.
   */
  public GridNearTxFinishFuture(
      GridCacheContext<K, V> cctx, GridNearTxLocal<K, V> tx, boolean commit) {
    super(cctx.kernalContext(), F.<GridCacheTx>identityReducer(tx));

    assert cctx != null;

    this.cctx = cctx;
    this.tx = tx;
    this.commit = commit;

    mappings = tx.mappings();

    futId = GridUuid.randomUuid();

    log = U.logger(ctx, logRef, GridNearTxFinishFuture.class);
  }
  /**
   * @param keyBytes Key to remove.
   * @return {@code true} if value was actually removed, {@code false} otherwise.
   * @throws GridException If failed.
   */
  @SuppressWarnings({"unchecked"})
  @Nullable
  GridCacheSwapEntry<V> readAndRemove(byte[] keyBytes) throws GridException {
    if (!enabled) return null;

    final GridTuple<GridSwapByteArray> t = F.t1();

    swapMgr.remove(
        spaceName,
        new GridSwapByteArray(keyBytes),
        new CI1<GridSwapByteArray>() {
          @Override
          public void apply(GridSwapByteArray removed) {
            t.set(removed);
          }
        });

    if (t.get() == null) return null;

    // To unmarshal swap entry itself local class loader will be enough.
    return recreateEntry((GridCacheSwapEntry<V>) unmarshal(t.get(), cctx.deploy().localLoader()));
  }
  /**
   * Removes locks regardless of whether they are owned or not for given version and keys.
   *
   * @param ver Lock version.
   * @param keys Keys.
   */
  @SuppressWarnings({"unchecked"})
  public void removeLocks(GridCacheVersion ver, Collection<? extends K> keys) {
    if (keys.isEmpty()) return;

    try {
      Collection<GridRichNode> affNodes = null;

      int keyCnt = -1;

      Map<GridNode, GridNearUnlockRequest<K, V>> map = null;

      for (K key : keys) {
        // Send request to remove from remote nodes.
        GridNearUnlockRequest<K, V> req = null;

        while (true) {
          GridDistributedCacheEntry<K, V> entry = peekExx(key);

          try {
            if (entry != null) {
              GridCacheMvccCandidate<K> cand = entry.candidate(ver);

              if (cand != null) {
                if (affNodes == null) {
                  affNodes = CU.allNodes(ctx, cand.topologyVersion());

                  keyCnt = (int) Math.ceil((double) keys.size() / affNodes.size());

                  map = new HashMap<GridNode, GridNearUnlockRequest<K, V>>(affNodes.size());
                }

                GridRichNode primary = CU.primary0(ctx.affinity(key, affNodes));

                if (!primary.isLocal()) {
                  req = map.get(primary);

                  if (req == null) {
                    map.put(primary, req = new GridNearUnlockRequest<K, V>(keyCnt));

                    req.version(ver);
                  }
                }

                // Remove candidate from local node first.
                if (entry.removeLock(cand.version())) {
                  if (primary.isLocal()) {
                    dht.removeLocks(primary.id(), ver, F.asList(key), true);

                    assert req == null;

                    continue;
                  }

                  req.addKey(entry.key(), entry.getOrMarshalKeyBytes(), ctx);
                }
              }
            }

            break;
          } catch (GridCacheEntryRemovedException ignored) {
            if (log.isDebugEnabled())
              log.debug(
                  "Attempted to remove lock from removed entry (will retry) [rmvVer="
                      + ver
                      + ", entry="
                      + entry
                      + ']');
          }
        }
      }

      if (map == null || map.isEmpty()) return;

      Collection<GridCacheVersion> committed = ctx.tm().committedVersions(ver);
      Collection<GridCacheVersion> rolledback = ctx.tm().rolledbackVersions(ver);

      for (Map.Entry<GridNode, GridNearUnlockRequest<K, V>> mapping : map.entrySet()) {
        GridNode n = mapping.getKey();

        GridDistributedUnlockRequest<K, V> req = mapping.getValue();

        if (!req.keyBytes().isEmpty()) {
          req.completedVersions(committed, rolledback);

          // We don't wait for reply to this message.
          ctx.io().send(n, req);
        }
      }
    } catch (GridException ex) {
      U.error(log, "Failed to unlock the lock for keys: " + keys, ex);
    }
  }
 /**
  * @param e Transaction entry.
  * @return {@code True} if entry is locally mapped as a primary or back up node.
  */
 protected boolean isNearLocallyMapped(GridCacheEntryEx<K, V> e) {
   return F.contains(ctx.affinity(e.key(), CU.allNodes(ctx)), ctx.localNode());
 }