Package org.apache.cassandra.net

Examples of org.apache.cassandra.net.CachingMessageProducer

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                MessagingService.instance().sendRR(command, dataPoint, handler);
            }

            // We lazy-construct the digest Message object since it may not be necessary if we
            // are doing a local digest read, or no digest reads at all.
            MessageProducer producer = new CachingMessageProducer(digestCommand);
            for (InetAddress digestPoint : handler.endpoints.subList(1, handler.endpoints.size()))
            {
                if (digestPoint.equals(FBUtilities.getLocalAddress()))
                {
                    if (logger.isDebugEnabled())
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            };
            ReadCallback<Iterable<Row>> handler = getReadCallback(resolver, iCommand, consistency_level, liveEndpoints);
            handler.assureSufficientLiveNodes();

            IndexScanCommand command = new IndexScanCommand(keyspace, column_family, index_clause, column_predicate, range);
            MessageProducer producer = new CachingMessageProducer(command);
            for (InetAddress endpoint : liveEndpoints)
            {
                MessagingService.instance().sendRR(producer, endpoint, handler);
                if (logger.isDebugEnabled())
                    logger.debug("reading " + command + " from " + endpoint);
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        final TruncateResponseHandler responseHandler = new TruncateResponseHandler(blockFor);

        // Send out the truncate calls and track the responses with the callbacks.
        logger.debug("Starting to send truncate messages to hosts {}", allEndpoints);
        final Truncation truncation = new Truncation(keyspace, cfname);
        MessageProducer producer = new CachingMessageProducer(truncation);
        for (InetAddress endpoint : allEndpoints)
            MessagingService.instance().sendRR(producer, endpoint, responseHandler);

        // Wait for all
        logger.debug("Sent all truncate messages, now waiting for {} responses", blockFor);
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    private static void sendToHintedEndpoints(final RowMutation rm, Multimap<InetAddress, InetAddress> hintedEndpoints, IWriteResponseHandler responseHandler, String localDataCenter, ConsistencyLevel consistency_level)
    throws IOException
    {
        // Multimap that holds onto all the messages and addresses meant for a specific datacenter
        Map<String, Multimap<Message, InetAddress>> dcMessages = new HashMap<String, Multimap<Message, InetAddress>>(hintedEndpoints.size());
        MessageProducer producer = new CachingMessageProducer(rm);

        for (Map.Entry<InetAddress, Collection<InetAddress>> entry : hintedEndpoints.asMap().entrySet())
        {
            InetAddress destination = entry.getKey();
            Collection<InetAddress> targets = entry.getValue();

            String dc = DatabaseDescriptor.getEndpointSnitch().getDatacenter(destination);

            if (targets.size() == 1 && targets.iterator().next().equals(destination))
            {
                // unhinted writes
                if (destination.equals(FBUtilities.getLocalAddress()))
                {
                    insertLocal(rm, responseHandler);
                }
                else
                {
                    // belongs on a different server
                    if (logger.isDebugEnabled())
                        logger.debug("insert writing key " + ByteBufferUtil.bytesToHex(rm.key()) + " to " + destination);

                    Multimap<Message, InetAddress> messages = dcMessages.get(dc);
                    if (messages == null)
                    {
                       messages = HashMultimap.create();
                       dcMessages.put(dc, messages);
                    }

                    messages.put(producer.getMessage(Gossiper.instance.getVersion(destination)), destination);
                }
            }
            else
            {
                // hinted messages are unique, so there is no point to adding a hop by forwarding via another node.
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                MessagingService.instance().sendRR(command, dataPoint, handler);
            }

            // We lazy-construct the digest Message object since it may not be necessary if we
            // are doing a local digest read, or no digest reads at all.
            MessageProducer producer = new CachingMessageProducer(digestCommand);
            for (InetAddress digestPoint : handler.endpoints.subList(1, handler.endpoints.size()))
            {
                if (digestPoint.equals(FBUtilities.getLocalAddress()))
                {
                    if (logger.isDebugEnabled())
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            };
            ReadCallback<Iterable<Row>> handler = getReadCallback(resolver, iCommand, consistency_level, liveEndpoints);
            handler.assureSufficientLiveNodes();

            IndexScanCommand command = new IndexScanCommand(keyspace, column_family, index_clause, column_predicate, range);
            MessageProducer producer = new CachingMessageProducer(command);
            for (InetAddress endpoint : liveEndpoints)
            {
                MessagingService.instance().sendRR(producer, endpoint, handler);
                if (logger.isDebugEnabled())
                    logger.debug("reading " + command + " from " + endpoint);
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        final TruncateResponseHandler responseHandler = new TruncateResponseHandler(blockFor);

        // Send out the truncate calls and track the responses with the callbacks.
        logger.debug("Starting to send truncate messages to hosts {}", allEndpoints);
        final Truncation truncation = new Truncation(keyspace, cfname);
        MessageProducer producer = new CachingMessageProducer(truncation);
        for (InetAddress endpoint : allEndpoints)
            MessagingService.instance().sendRR(producer, endpoint, responseHandler);

        // Wait for all
        logger.debug("Sent all truncate messages, now waiting for {} responses", blockFor);
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Related Classes of org.apache.cassandra.net.CachingMessageProducer

  • org.apache.cassandra.service.MigrationManager
  • org.apache.cassandra.service.StorageProxy
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