예제 #1
0
        public void ApplyToWriter(IndexWriter writer)
        {
            try
            {
                if (MergeFactor != null)
                {
                    writer.SetMergeFactor((int) MergeFactor);
                }

                if (MaxMergeDocs != null)
                {
                    writer.SetMaxMergeDocs((int) MaxMergeDocs);
                }

                if (MaxBufferedDocs != null)
                {
                    writer.SetMaxBufferedDocs((int) MaxBufferedDocs);
                }

                if (RamBufferSizeMb != null)
                {
                    writer.SetRAMBufferSizeMB((int) RamBufferSizeMb);
                }

                if (TermIndexInterval != null)
                {
                    writer.SetTermIndexInterval((int) TermIndexInterval);
                }
            }
            catch (ArgumentOutOfRangeException)
            {
                // TODO: Log it
            }
        }
예제 #2
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        public static IndexWriter GetAzureIndexWriter(this LuceneIndexer indexer)
        {
            indexer.EnsureIndex(false);
            var writer = new IndexWriter(indexer.GetLuceneDirectory(), indexer.IndexingAnalyzer, false, IndexWriter.MaxFieldLength.UNLIMITED);

            writer.SetRAMBufferSizeMB(10.0);
            writer.SetUseCompoundFile(false);
            writer.SetMaxMergeDocs(10000);
            writer.SetMergeFactor(100);
            return writer;
        }
예제 #3
0
        /// <summary>
        /// Retrieve a read/write <see cref="IndexWriter" />
        /// </summary>
        /// <param name="provider"></param>
        /// <param name="entity"></param>
        /// <param name="modificationOperation"></param>
        /// <returns></returns>
        public IndexWriter GetIndexWriter(IDirectoryProvider provider, System.Type entity, bool modificationOperation)
        {
            // Have to close the reader before the writer is accessed.
            IndexReader reader;
            readers.TryGetValue(provider, out reader);
            if (reader != null)
            {
                try
                {
                    reader.Close();
                }
                catch (IOException ex)
                {
                    throw new SearchException("Exception while closing IndexReader", ex);
                }
                finally
                {
                    readers.Remove(provider);

                    // PH - Moved the exit lock out of the try otherwise it won't take place when we have an error closing the reader.
                    // Exit Lock added by Kailuo Wang, because the lock needs to be obtained immediately afterwards
                    object syncLock = searchFactoryImplementor.GetLockableDirectoryProviders()[provider];
                    Monitor.Exit(syncLock);
                }
            }

            if (writers.ContainsKey(provider))
            {
                return writers[provider];
            }

            LockProvider(provider);

            if (modificationOperation) dpStatistics[provider].Operations++;

            try
            {
                Analyzer analyzer = entity != null
                                        ? searchFactoryImplementor.DocumentBuilders[entity].Analyzer
                                        : new SimpleAnalyzer();
                IndexWriter writer = new IndexWriter(provider.Directory, analyzer, false);

                LuceneIndexingParameters indexingParams = searchFactoryImplementor.GetIndexingParameters(provider);
                if (IsBatch)
                {
                    writer.SetMergeFactor(indexingParams.BatchMergeFactor);
                    writer.SetMaxMergeDocs(indexingParams.BatchMaxMergeDocs);
                    writer.SetMaxBufferedDocs(indexingParams.BatchMaxBufferedDocs);
                }
                else
                {
                    writer.SetMergeFactor(indexingParams.TransactionMergeFactor);
                    writer.SetMaxMergeDocs(indexingParams.TransactionMaxMergeDocs);
                    writer.SetMaxBufferedDocs(indexingParams.TransactionMaxBufferedDocs);
                }

                writers.Add(provider, writer);

                return writer;
            }
            catch (IOException ex)
            {
                CleanUp(new SearchException("Unable to open IndexWriter" + (entity != null ? " for " + entity : ""), ex));
            }

            return null;
        }
예제 #4
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		public virtual void  TestSetMaxMergeDocs()
		{
			MockRAMDirectory dir = new MockRAMDirectory();
			IndexWriter iw = new IndexWriter(dir, new StandardAnalyzer(), true);
			iw.SetMergeScheduler(new MyMergeScheduler(this));
			iw.SetMaxMergeDocs(20);
			iw.SetMaxBufferedDocs(2);
			iw.SetMergeFactor(2);
			Document document = new Document();
			document.Add(new Field("tvtest", "a b c", Field.Store.NO, Field.Index.TOKENIZED, Field.TermVector.YES));
			for (int i = 0; i < 177; i++)
				iw.AddDocument(document);
			iw.Close();
		}
예제 #5
0
        static void Main(string[] args)
        {
            // get settings from azure settings or app.config
            CloudStorageAccount.SetConfigurationSettingPublisher((configName, configSetter) =>
            {
                try
                {
                    configSetter(RoleEnvironment.GetConfigurationSettingValue(configName));
                }
                catch (Exception)
                {
                    // for a console app, reading from App.config
                    configSetter(System.Configuration.ConfigurationManager.AppSettings[configName]);
                }
            });

            // default AzureDirectory stores cache in local temp folder
            AzureDirectory azureDirectory = new AzureDirectory(CloudStorageAccount.FromConfigurationSetting("blobStorage"), "TestCatalog");
            bool findexExists = false;
            try
            {
                findexExists = IndexReader.IndexExists(azureDirectory);
                if ((findexExists) && IndexReader.IsLocked(azureDirectory))
                    azureDirectory.ClearLock("write.lock");
            }
            catch (Exception e)
            {
                Console.WriteLine(e.ToString());
                return;
            }
            IndexWriter indexWriter = new IndexWriter(azureDirectory, new Lucene.Net.Analysis.Standard.StandardAnalyzer(), !findexExists);
            indexWriter.SetRAMBufferSizeMB(10.0);
            indexWriter.SetUseCompoundFile(false);
            indexWriter.SetMaxMergeDocs(10000);
            indexWriter.SetMergeFactor(100);
            fExit = true;
            for (int iDoc = 0; iDoc < 100; iDoc++)
            {
                if (fExit)
                    break;
                if (iDoc % 10 == 0)
                    Console.WriteLine(iDoc);
                Document doc = new Document();
                doc.Add(new Field("id", DateTime.Now.ToFileTimeUtc().ToString(), Field.Store.YES, Field.Index.TOKENIZED, Field.TermVector.NO));
                doc.Add(new Field("Title", GeneratePhrase(10), Field.Store.YES, Field.Index.TOKENIZED, Field.TermVector.NO));
                doc.Add(new Field("Body", GeneratePhrase(40), Field.Store.YES, Field.Index.TOKENIZED, Field.TermVector.NO));
                indexWriter.AddDocument(doc);
            }
            Console.WriteLine("Total docs is {0}", indexWriter.DocCount());
            indexWriter.Close();

            IndexSearcher searcher;
            using (new AutoStopWatch("Creating searcher"))
            {
                searcher = new IndexSearcher(azureDirectory); // IndexReader.Open(
            }
            SearchForPhrase(searcher, "dog");
            SearchForPhrase(searcher, _random.Next(32768).ToString());
            SearchForPhrase(searcher, _random.Next(32768).ToString());
        }
예제 #6
0
        static void Main(string[] args)
        {
            // get settings from azure settings or app.config
            CloudStorageAccount.SetConfigurationSettingPublisher((configName, configSetter) =>
            {
                try
                {
                    configSetter(RoleEnvironment.GetConfigurationSettingValue(configName));
                }
                catch (Exception)
                {
                    // for a console app, reading from App.config
                    configSetter(System.Configuration.ConfigurationManager.AppSettings[configName]);
                }
            });

            // default AzureDirectory stores cache in local temp folder
            AzureDirectory azureDirectory = new AzureDirectory(CloudStorageAccount.FromConfigurationSetting("blobStorage"), "TestCatalog6");
            bool findexExists = IndexReader.IndexExists(azureDirectory);

            IndexWriter indexWriter = null;
            while (indexWriter == null)
            {
                try
                {
                    indexWriter = new IndexWriter(azureDirectory, new StandardAnalyzer(), !IndexReader.IndexExists(azureDirectory));
                }
                catch (LockObtainFailedException)
                {
                    Console.WriteLine("Lock is taken, Hit 'Y' to clear the lock, or anything else to try again");
                    if (Console.ReadLine().ToLower().Trim() == "y" )
                        azureDirectory.ClearLock("write.lock");
                }
            };
            Console.WriteLine("IndexWriter lock obtained, this process has exclusive write access to index");
            indexWriter.SetRAMBufferSizeMB(10.0);
            indexWriter.SetUseCompoundFile(false);
            indexWriter.SetMaxMergeDocs(10000);
            indexWriter.SetMergeFactor(100);

            for (int iDoc = 0; iDoc < 10000; iDoc++)
            {
                if (iDoc % 10 == 0)
                    Console.WriteLine(iDoc);
                Document doc = new Document();
                doc.Add(new Field("id", DateTime.Now.ToFileTimeUtc().ToString(), Field.Store.YES, Field.Index.TOKENIZED, Field.TermVector.NO));
                doc.Add(new Field("Title", GeneratePhrase(10), Field.Store.YES, Field.Index.TOKENIZED, Field.TermVector.NO));
                doc.Add(new Field("Body", GeneratePhrase(40), Field.Store.YES, Field.Index.TOKENIZED, Field.TermVector.NO));
                indexWriter.AddDocument(doc);
            }
            Console.WriteLine("Total docs is {0}", indexWriter.DocCount());
            indexWriter.Close();

            IndexSearcher searcher;
            using (new AutoStopWatch("Creating searcher"))
            {
                searcher = new IndexSearcher(azureDirectory);
            }
            SearchForPhrase(searcher, "dog");
            SearchForPhrase(searcher, _random.Next(32768).ToString());
            SearchForPhrase(searcher, _random.Next(32768).ToString());
        }
        public void optimizeIndex(string azureContainerName)
        {
            XmlDocument xdoc = new XmlDocument();
              xdoc.LoadXml(new Utility().getConfigXML());
              XmlNode xNode = xdoc.SelectSingleNode(string.Format("//blobdata[@name='default']"));

              string azureAccount = xNode.Attributes["account"].Value;
              string azureEndpoint = xNode.Attributes["endpoint"].Value;
              string azureSharedKey = xNode.Attributes["accountSharedKey"].Value;
              string blobStorage = xNode.Attributes["endpoint"].Value;

              xNode = xdoc.SelectSingleNode(string.Format("//fragmentData/Setting[@name='HandlerFragments']"));
              string fragmentLocation = xNode.Attributes["value"].Value;

              Microsoft.WindowsAzure.StorageCredentialsAccountAndKey scaak = new Microsoft.WindowsAzure.StorageCredentialsAccountAndKey(azureAccount, azureSharedKey);
              Microsoft.WindowsAzure.CloudStorageAccount csa = new Microsoft.WindowsAzure.CloudStorageAccount(scaak, false);
              AzureDirectory azureDirectory = new AzureDirectory(csa, azureContainerName, new RAMDirectory());
              bool findexExists = false;
              try
              {
            findexExists = IndexReader.IndexExists(azureDirectory);
            if ((findexExists) && IndexWriter.IsLocked(azureDirectory))
              azureDirectory.ClearLock("write.lock");
              }
              catch (Exception e)
              {
            Trace.WriteLine(e.ToString());
            return;
              }

              IndexWriter idxW = new IndexWriter(azureDirectory, new SnowballAnalyzer("English"), !findexExists, new IndexWriter.MaxFieldLength(1024));
              idxW.SetRAMBufferSizeMB(10.0);
              idxW.SetUseCompoundFile(false);
              idxW.SetMaxMergeDocs(10000);
              idxW.SetMergeFactor(100);
              idxW.Optimize();
        }
        public void processRequest(string queryName, NameValueCollection htKeys)
        {
            string retVal = string.Empty;
              XmlDocument xdoc = new XmlDocument();
              xdoc.LoadXml(new Utility().getConfigXML());
              XmlNode xNode = xdoc.SelectSingleNode(string.Format("//blobdata[@name='default']"));

              string azureAccount = xNode.Attributes["account"].Value;
              string azureEndpoint = xNode.Attributes["endpoint"].Value;
              string azureSharedKey = xNode.Attributes["accountSharedKey"].Value;
              string blobStorage = xNode.Attributes["endpoint"].Value;

              xNode = xdoc.SelectSingleNode(string.Format("//fragmentData/Setting[@name='HandlerFragments']"));
              string fragmentLocation = xNode.Attributes["value"].Value;
              try
              {
            AzureBlobStorage abs = new AzureBlobStorage(azureAccount, blobStorage, azureSharedKey, "SharedKey");
            azureResults ar = new azureResults();
            // Get the page name and replace the .q extension with .xml
            if (!queryName.ToLower().EndsWith(".xml"))
              queryName += ".xml";
            byte[] xmlFragment = abs.GetBlob(fragmentLocation, queryName, "", ref ar, "");
            if (!ar.Succeeded)
            {
              NotifyError(new Exception(ar.StatusCode.ToString()));
            }
            else
            {

              xdoc = new XmlDocument();
              System.Text.ASCIIEncoding enc = new System.Text.ASCIIEncoding();
              xdoc.LoadXml(enc.GetString(xmlFragment));
              /*
               * http://azure-architect.com/portals/16/MOOPData.xsd

               */
              XmlNode xn = xdoc.SelectSingleNode("//storedProcedure[1]");
              string storedProcedureName = xn.Attributes["procedureName"].Value;
              string connectionStringName = xn.Attributes["connectionName"].Value;

              SqlCommand cmd = new SqlCommand(storedProcedureName, new SqlConnection(new Utility().ResolveDataConnection(connectionStringName)));
              cmd.CommandType = CommandType.StoredProcedure;
              XmlNodeList xnl = xdoc.SelectNodes("/MOOPData/luceneData/field");
              Field.Store[] fieldStore = new Field.Store[xnl.Count];
              Field.Index[] indexType = new Field.Index[xnl.Count];
              string[] luceneName = new string[xnl.Count];
              string[] dataName = new string[xnl.Count];
              bool[] isIncludedInOlioSearchFlag = new bool[xnl.Count];
              bool[] isKeyFieldFlag = new bool[xnl.Count];
              string olioSearchFieldName = string.Empty;
              string azureContainerName = string.Empty;
              olioSearchFieldName = xdoc.SelectSingleNode("//MOOPData/luceneData/olioSearchFieldName[1]").InnerText;
              azureContainerName = xdoc.SelectSingleNode("//MOOPData/luceneData/azureContainer[1]").InnerText;
              for (int i = 0; i < xnl.Count; i++)
              {
            XmlNode node = xnl[i];
            switch (node.Attributes["store"].Value.ToLower())
            {
              case "compress": fieldStore[i] = Field.Store.COMPRESS; break;
              case "no": fieldStore[i] = Field.Store.NO; break;
              case "yes": fieldStore[i] = Field.Store.YES; break;
              default: fieldStore[i] = Field.Store.NO; break;
            }

            switch (node.Attributes["index"].Value.ToLower())
            {
              case "analyzed": indexType[i] = Field.Index.ANALYZED; break;
              case "analyzed_no_norms": indexType[i] = Field.Index.ANALYZED_NO_NORMS; break;
              case "no": indexType[i] = Field.Index.NO; break;
              case "no_norms": indexType[i] = Field.Index.NOT_ANALYZED_NO_NORMS; break;
              case "not_analyzed": indexType[i] = Field.Index.NOT_ANALYZED; break;
              case "not_analyzed_no_norms": indexType[i] = Field.Index.NOT_ANALYZED_NO_NORMS; break;
              case "tokenized": indexType[i] = Field.Index.ANALYZED; break;
              case "un_tokenized": indexType[i] = Field.Index.NOT_ANALYZED; break;
              default: indexType[i] = Field.Index.NO; break;
            }
            dataName[i] = node.Attributes["dataName"].Value;
            luceneName[i] = node.Attributes["luceneName"].Value;
            isKeyFieldFlag[i] = node.Attributes["isKeyField"].Value == "true";
            isKeyFieldFlag[i] = node.Attributes["isKeyField"].Value == "true";
            isIncludedInOlioSearchFlag[i] = node.Attributes["isIncludedInOlioSearch"].Value == "true";
              }

              xnl = xdoc.SelectNodes("//parameter");
              foreach (XmlNode node in xnl)
              {
            string parameterName = node.Attributes["parameterName"].Value;
            string urlParameterName = node.Attributes["urlParameterName"].Value;
            string dataType = node.Attributes["dataType"].Value;
            string dataLength = node.Attributes["dataLength"].Value;
            string defaultValue = node.Attributes["defaultValue"].Value;
            if (!parameterName.StartsWith("@"))
              parameterName = "@" + parameterName;
            SqlParameter sp = new SqlParameter();
            sp.ParameterName = parameterName;
            switch (dataType)
            {
              case "bigint": sp.SqlDbType = SqlDbType.BigInt; break;
              case "binary": sp.SqlDbType = SqlDbType.Binary; break;
              case "bit": sp.SqlDbType = SqlDbType.Bit; break;
              case "char": sp.SqlDbType = SqlDbType.Char; break;
              case "date": sp.SqlDbType = SqlDbType.Date; break;
              case "datetime": sp.SqlDbType = SqlDbType.DateTime; break;
              case "datetime2": sp.SqlDbType = SqlDbType.DateTime2; break;
              case "datetimeoffset": sp.SqlDbType = SqlDbType.DateTimeOffset; break;
              case "decimal": sp.SqlDbType = SqlDbType.Decimal; break;
              case "float": sp.SqlDbType = SqlDbType.Float; break;
              case "geography": sp.SqlDbType = SqlDbType.Structured; break;
              case "geometry": sp.SqlDbType = SqlDbType.Structured; break;
              case "hierarchyid": sp.SqlDbType = SqlDbType.Structured; break;
              case "image": sp.SqlDbType = SqlDbType.Image; break;
              case "int": sp.SqlDbType = SqlDbType.Int; break;
              case "money": sp.SqlDbType = SqlDbType.Money; break;
              case "nchar": sp.SqlDbType = SqlDbType.NChar; break;
              case "ntext": sp.SqlDbType = SqlDbType.NText; break;
              case "nvarchar": sp.SqlDbType = SqlDbType.NVarChar; break;
              case "real": sp.SqlDbType = SqlDbType.Real; break;
              case "smalldatetime": sp.SqlDbType = SqlDbType.SmallDateTime; break;
              case "smallint": sp.SqlDbType = SqlDbType.SmallInt; break;
              case "smallmoney": sp.SqlDbType = SqlDbType.SmallMoney; break;
              case "sql_variant": sp.SqlDbType = SqlDbType.Variant; break;
              case "text": sp.SqlDbType = SqlDbType.Text; break;
              case "time": sp.SqlDbType = SqlDbType.Time; break;
              case "timestamp": sp.SqlDbType = SqlDbType.Timestamp; break;
              case "tinyint": sp.SqlDbType = SqlDbType.TinyInt; break;
              case "uniqueidentifier": sp.SqlDbType = SqlDbType.UniqueIdentifier; break;
              case "varbinary": sp.SqlDbType = SqlDbType.VarBinary; break;
              case "varchar": sp.SqlDbType = SqlDbType.VarChar; break;
              case "xml": sp.SqlDbType = SqlDbType.Xml; break;
              default: sp.SqlDbType = SqlDbType.Variant; break;
            }
            switch (urlParameterName.ToLower())
            {
              case "ipaddress": sp.Value = "127.0.0.1"; break;
              case "domainname": sp.Value = ""; break;
              default: if (htKeys[urlParameterName] != null)
                  sp.Value = htKeys[urlParameterName];
                else
                  sp.Value = (defaultValue.ToLower() == "dbnull" ? DBNull.Value
                  : (object)defaultValue);
                break;
            }
            cmd.Parameters.Add(sp);
              }

              cmd.Connection.Open();
              SqlDataReader dr = cmd.ExecuteReader();
              Microsoft.WindowsAzure.StorageCredentialsAccountAndKey scaak = new Microsoft.WindowsAzure.StorageCredentialsAccountAndKey(azureAccount, azureSharedKey);
              Microsoft.WindowsAzure.CloudStorageAccount csa = new Microsoft.WindowsAzure.CloudStorageAccount(scaak, false);
              AzureDirectory azureDirectory = new AzureDirectory(csa, azureContainerName, new RAMDirectory());
              bool findexExists = false;
              try
              {
            findexExists = IndexReader.IndexExists(azureDirectory);
            if ((findexExists) && IndexWriter.IsLocked(azureDirectory))
              azureDirectory.ClearLock("write.lock");
              }
              catch (Exception e)
              {
            Trace.WriteLine(e.ToString());
            return;
              }

              IndexWriter idxW = new IndexWriter(azureDirectory, new SnowballAnalyzer("English"), !findexExists, new IndexWriter.MaxFieldLength(1024));
              idxW.SetRAMBufferSizeMB(10.0);
              idxW.SetUseCompoundFile(false);
              idxW.SetMaxMergeDocs(10000);
              idxW.SetMergeFactor(100);
              while (dr.Read())
              {
            StringBuilder olioSearch = new StringBuilder();
            Document doc = new Document();
            for (int i = 0; i <= dataName.GetUpperBound(0); i++)
            {

              if (isKeyFieldFlag[i])
              {

                NotifyCaller(string.Format("Processing {0}", dr[dataName[i]].ToString().ToLower()));
                idxW.DeleteDocuments(new Term(luceneName[i], dr[dataName[i]].ToString().ToLower()));
                doc.Add(new Field(luceneName[i], dr[dataName[i]].ToString().ToLower(), Field.Store.YES, Field.Index.NOT_ANALYZED));
              }
              else
                try
                {
                  doc.Add(new Field(luceneName[i], dr[dataName[i]].ToString(), fieldStore[i], indexType[i]));

                  if (isIncludedInOlioSearchFlag[i])
                    olioSearch.AppendFormat("\r\n{0}", dr[dataName[i]].ToString());
                }
                catch (Exception ex)
                {
                  NotifyError(ex);
                }
            }
            if (olioSearch.ToString() != string.Empty && olioSearchFieldName != string.Empty)
              doc.Add(new Field(olioSearchFieldName, olioSearch.ToString(), Field.Store.NO, Field.Index.ANALYZED));
            idxW.AddDocument(doc);
              }
              idxW.Commit();
              idxW.Close();

            }
              }

              catch (Exception ex)
              {
            MOOPFramework.FrameworkUtility u = new MOOPFramework.FrameworkUtility(new Utility().ResolveDataConnection("sqlAzureConnection"));
            u.LogData("localhost", "quoteSearchLoader", "testing", string.Empty, string.Empty, "", "QueryError", ex.ToString(),
              u.nvc2XML(htKeys));
            //retVal = string.Format("<!-- {0} -->", ex.ToString());
            NotifyError(new Exception("An error occured but it was logged for later review"));
              }
              finally { if (retVal == string.Empty) retVal = "<root />"; }
        }
예제 #9
0
        public override void Run()
        {
            Trace.WriteLine(DateTime.Now.ToString() + " [INIT]");

            // Create azure account credentials
            CloudStorageAccount.SetConfigurationSettingPublisher((configName, configSetter) =>
            {
                configSetter(CloudSettingsResolver.GetConfigSetting(configName));
            });
            CloudStorageAccount cloudStorageAccount = CloudStorageAccount.FromConfigurationSetting("BlobStorageEndpoint");

            // Create reference to index queue
            CloudQueueClient client = cloudStorageAccount.CreateCloudQueueClient();
            CloudQueue queue = client.GetQueueReference("searchindexqueue");
            queue.CreateIfNotExist();
            queue.Clear();

            // Create lucene index writer and optimize index (only on startup)
            _Directory = new AzureDirectory(cloudStorageAccount, "LuceneStorage", new RAMDirectory());

            while (true)
            {
                try
                {
                    int queueItems = queue.RetrieveApproximateMessageCount();
                    Trace.WriteLine(DateTime.Now.ToString() + " [QUEUE_CHECK] " + queueItems + " items.");
                    if (queueItems > 0)
                    {
                        // Get index writer
                        if (IndexWriter.IsLocked(_Directory)) _Directory.ClearLock("write.lock");
                        IndexWriter indexWriter = new IndexWriter(_Directory, new Lucene.Net.Analysis.Standard.StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_29), false, new IndexWriter.MaxFieldLength(1000));
                        indexWriter.SetRAMBufferSizeMB(10.0);
                        indexWriter.SetUseCompoundFile(false);
                        indexWriter.SetMaxMergeDocs(10000);
                        indexWriter.SetMergeFactor(100);

                        try
                        {
                            // Get dictionary to skip duplicated queue items
                            Dictionary<long, DateTime> updatedSummaries = new Dictionary<long, DateTime>();

                            // Retrieve batch of messages to iterate
                            var msgs = queue.GetMessages(32);
                            while (msgs.Count() > 0)
                            {
                                foreach (var msg in msgs)
                                {
                                    Trace.WriteLine(DateTime.Now.ToString() + " [MSG] " + msg.AsString);
                                    long summaryId = long.Parse(msg.AsString);

                                    // zero = re-index the search index
                                    // positive number = add/update PointDataSummary to index
                                    // negative number = delete PointDataSummary from index
                                    if (summaryId == 0)
                                    {
                                        Trace.WriteLine(DateTime.Now.ToString() + " [REINDEX]");
                                        indexWriter.Close();
                                        indexWriter = new IndexWriter(_Directory, new Lucene.Net.Analysis.Standard.StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_29), true, new IndexWriter.MaxFieldLength(1000));
                                        indexWriter.SetRAMBufferSizeMB(10.0);
                                        indexWriter.SetUseCompoundFile(false);
                                        indexWriter.SetMaxMergeDocs(10000);
                                        indexWriter.SetMergeFactor(100);
                                        List<PointDataSummary> summaries = PointDataSummary.All().ToList();
                                        updatedSummaries = new Dictionary<long, DateTime>();
                                        foreach (var summary in summaries)
                                        {
                                            Index(indexWriter, summary);
                                            Trace.WriteLine(DateTime.Now.ToString() + " [INDEX] " + summary.Id);
                                            updatedSummaries.Add(summaryId, DateTime.UtcNow);
                                        }
                                    }
                                    else if (updatedSummaries.ContainsKey(summaryId) && ((DateTime)updatedSummaries[summaryId]) >= msg.InsertionTime)
                                    {
                                        Trace.WriteLine(DateTime.Now.ToString() + " [SKIPPED] " + msg.AsString);
                                    }
                                    else
                                    {
                                        if (summaryId < 0)
                                        {
                                            indexWriter.DeleteDocuments(new Lucene.Net.Index.Term("point_id", (-summaryId).ToString()));
                                        }
                                        else
                                        {
                                            var summary = PointDataSummary.SingleOrDefault(p => p.Id == summaryId);
                                            if (summary != null)
                                            {
                                                Index(indexWriter, summary);
                                                Trace.WriteLine(DateTime.Now.ToString() + " [INDEX] " + summary.Id);
                                            }
                                        }
                                        updatedSummaries.Remove(summaryId);
                                        updatedSummaries.Add(summaryId, DateTime.UtcNow);
                                    }
                                    // Delete message from queue
                                    queue.DeleteMessage(msg);
                                }
                                // Retrieve batch of messages to iterate
                                msgs = queue.GetMessages(32);
                            }
                        }
                        catch (Exception ex)
                        {
                            Trace.WriteLine(ex.ToString());
                        }
                        finally
                        {
                            indexWriter.Close();
                        }
                    }
                }
                catch (Exception ex)
                {
                    Trace.WriteLine(DateTime.Now + " [ERROR] " + ex.Message);
                }
                finally
                {
                    Trace.WriteLine(DateTime.Now.ToString() + " [QUEUE_CHECK] End");
                    Thread.Sleep(_SleepInMinutes * 60 * 1000);
                }
            }
        }