Examples of org.infinispan.distribution.DistributionManager

org.infinispan.distribution.DistributionManager
A component that manages the distribution of elements across a cache cluster @author Manik Surtani @author Mircea.Markus@jboss.com @author Vladimir Blagojevic @since 4.0

   }


   private void assertEvenDistribution() {
      for (int i = 0; i < getCacheManagers().size(); i++) {
         Cache<String, String> testCache = manager(i).getCache(testCacheName);
         DistributionManager dm = testCache.getAdvancedCache().getDistributionManager();
         for (String key : testCache.keySet()) {
            // each key must only occur once (numOwners is one)
            assertTrue("Key '" + key + "' is not owned by node " + address(i) + " but it still appears there",
                  dm.getLocality(key).isLocal());
         }
      }
   }

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        }
        return (entry != null) ? entry.getKey() : null;
    }


    private Address locatePrimaryOwner(String sessionId) {
        DistributionManager dist = this.cache.getAdvancedCache().getDistributionManager();
        return (dist != null) ? dist.getPrimaryLocation(sessionId) : this.cache.getCacheManager().getAddress();
    }

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   }


   @Override
   public Result execute(Session session) throws StatementException {
      Cache<Object, Object> cache = session.getCache(keyData.getCacheName());
      DistributionManager distributionManager = cache.getAdvancedCache().getDistributionManager();
      if(distributionManager!=null) {
         List<Address> addresses = distributionManager.locate(keyData.getKey());
         return new StringResult(addresses.toString());
      } else {
         throw new StatementException("Cache is not distributed");
      }
   }

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         throw new NullPointerException("A valid reference of Reducer is not set " + reducer);
            
      ComponentRegistry registry = cache.getComponentRegistry();
      RpcManager rpc = cache.getRpcManager();
      InvocationContextContainer icc = cache.getInvocationContextContainer();
      DistributionManager dm = cache.getDistributionManager();
      InterceptorChain invoker = registry.getComponent(InterceptorChain.class);
      CommandsFactory factory = registry.getComponent(CommandsFactory.class);
      
      MapReduceCommand cmd = null;
      MapReduceCommand selfCmd = null;

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         l.add(entry.getValue());
      }
   }


   protected Map<Address, List<KIn>> mapKeysToNodes() {
      DistributionManager dm = cache.getDistributionManager();
      Map<Address, List<KIn>> addressToKey = new HashMap<Address, List<KIn>>();
      for (KIn key : keys) {
         List<Address> nodesForKey = dm.locate(key);
         Address ownerOfKey = nodesForKey.get(0);
         List<KIn> keysAtNode = addressToKey.get(ownerOfKey);
         if (keysAtNode == null) {
            keysAtNode = new ArrayList<KIn>();
            addressToKey.put(ownerOfKey, keysAtNode);

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   private List<Address> getExistingNodes() {
      return cache.getAdvancedCache().getRpcManager().getTransport().getMembers();
   }


   private Address getAddressForKey(Object key) {
      DistributionManager distributionManager = getDistributionManager();
      ConsistentHash hash = distributionManager.getConsistentHash();
      List<Address> addressList = hash.locate(key, 1);
      if (addressList.size() == 0) {
         throw new IllegalStateException("Empty address list returned by consistent hash " + hash + " for key " + key);
      }
      return addressList.get(0);

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      }
      return addressList.get(0);
   }


   private boolean isNodeInConsistentHash(Address address) {
      DistributionManager distributionManager = getDistributionManager();
      ConsistentHash hash = distributionManager.getConsistentHash();
      return hash.getCaches().contains(address);
   }

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      DistributionManager distributionManager = getDistributionManager();
      ConsistentHash hash = distributionManager.getConsistentHash();
      return hash.getCaches().contains(address);
   }
   private DistributionManager getDistributionManager() {
      DistributionManager distributionManager = cache.getAdvancedCache().getDistributionManager();
      if (distributionManager == null) {
         throw new IllegalStateException("Null distribution manager. Is this an distributed(v.s. replicated) cache?");
      }
      return distributionManager;
   }

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         log.localExecutionFailed(e1);
      }
   }


   protected <K> Map<Address, List<K>> mapKeysToNodes(K... input) {
      DistributionManager dm = cache.getDistributionManager();
      Map<Address, List<K>> addressToKey = new HashMap<Address, List<K>>(input.length * 2);
      for (K key : input) {
         List<Address> nodesForKey = dm.locate(key);
         Address ownerOfKey = nodesForKey.get(0);
         List<K> keysAtNode = addressToKey.get(ownerOfKey);
         if (keysAtNode == null) {
            keysAtNode = new LinkedList<K>();
            addressToKey.put(ownerOfKey, keysAtNode);

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    * @see org.jboss.web.tomcat.service.session.distributedcache.spi.DistributedCacheManager#isLocal(java.lang.String)
    */
   @Override
   public boolean isLocal(String realId)
   {
      DistributionManager manager = this.cache.getAdvancedCache().getDistributionManager();
      
      return (manager != null) ? manager.isLocal(realId) : true;
   }

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