private async Task InitializeAsync()
{
// Check whether the index exists or not.
var indexExistsResponse = await elasticClient.IndexExistsAsync(indexName + "-" + DateTime.Now.ToString(RollingIndexDateFormat));
if (!indexExistsResponse.Exists)
{
// We don't (probably) have created the index yet. Enter the lock,
// then check again (aka: Double-Check Lock pattern).
await semaphore.WaitAsync().ConfigureAwait(false);
try
{
if (!indexExistsResponse.Exists)
{
// If the index does not exist, create a new one with the current date and alias it.
var createIndexResponse = await elasticClient.CreateIndexAsync(indexName + "-" + DateTime.Now.ToString(RollingIndexDateFormat), c => c
.Mappings(ms => ms.Map <DocumentItem>(m => m.AutoMap())).Settings(s => s.Setting(IndexMappingTotalFieldsLimitSetting, 100000))).ConfigureAwait(false);
var aliasResponse = await elasticClient.AliasAsync(ac => ac.Add(a => a.Index(indexName + "-" + DateTime.Now.ToString(RollingIndexDateFormat)).Alias(indexName))).ConfigureAwait(false);
}
}
finally
{
semaphore.Release();
}
}
}
private static List <Func <object> > IndexCommandsAsync(ElasticClient elastic)
{
return(new List <Func <object> >
{
() => elastic.CreateIndexAsync("test_index_1"),
() => elastic.IndexExistsAsync("test_index_1"),
() => elastic.UpdateIndexSettingsAsync(new UpdateIndexSettingsRequest("test_index_1")
{
IndexSettings = new IndexSettings()
{
Sorting = new SortingSettings
{
Fields = new Field("Title"),
},
},
}),
() => elastic.AliasAsync(new BulkAliasRequest
{
Actions = new List <IAliasAction>
{
new AliasAddAction
{
Add = new AliasAddOperation
{
Index = "test_index_1",
Alias = "test_index_2",
},
},
},
}),
() => elastic.GetAliasesPointingToIndexAsync("test_index_1"),
() => elastic.PutAliasAsync("test_index_1", "test_index_3"),
() => elastic.AliasExistsAsync(new AliasExistsRequest("test_index_1")),
() => elastic.DeleteAliasAsync(new DeleteAliasRequest("test_index_1", "test_index_3")),
() => elastic.DeleteAliasAsync(new DeleteAliasRequest("test_index_1", "test_index_2")),
() => elastic.CreateIndexAsync("test_index_4"),
#if (ELASTICSEARCH_6_1 && !DEFAULT_SAMPLES)
() => elastic.SplitIndexAsync("test_index_1", "test_index_4"),
#endif
() => elastic.DeleteIndexAsync("test_index_4"),
() => elastic.CloseIndexAsync("test_index_1"),
() => elastic.OpenIndexAsync("test_index_1"),
() => elastic.PutIndexTemplateAsync(new PutIndexTemplateRequest("test_template_1")),
() => elastic.IndexTemplateExistsAsync("test_template_1"),
() => elastic.DeleteIndexTemplateAsync("test_template_1"),
() => elastic.IndicesShardStoresAsync(),
() => elastic.IndicesStatsAsync("test_index_1"),
() => elastic.DeleteIndexAsync("test_index_1"),
() => elastic.GetAliasAsync(new GetAliasRequest()),
});
}
private async Task CreateIndexAsync(string indexName)
{
await esclient.CreateIndexAsync(indexName,
c => c.Settings(s => s.Analysis(analysisDescriptor => analysisDescriptor.TokenFilters(
tokenFilters => tokenFilters.WordDelimiter("camelfilter", t => t.SplitOnCaseChange())
).Analyzers(analyzers => analyzers.Pattern(
"loggername", p => new PatternAnalyzer {
Lowercase = true,
Pattern = @"[^\w]+"
}).Custom("camelcase", analyzer => analyzer.Tokenizer("whitespace").Filters(
"camelfilter", "lowercase"))))
.NumberOfShards(ElasticSearchClientConfiguration.ShardsNum)
.NumberOfReplicas(ElasticSearchClientConfiguration.ReplicasNum))
.Mappings(m => m.Map <ElasticLogRecord>(am => am.AutoMap())));
await esclient.AliasAsync(a => a.Add(add => add.Index(indexName).Alias(AliasName)));
}
private static List <Func <object> > IndexCommandsAsync(ElasticClient elastic)
{
return(new List <Func <object> >
{
() => elastic.CreateIndexAsync("test_index_1"),
() => elastic.IndexExistsAsync("test_index_1"),
() => elastic.UpdateIndexSettingsAsync(new UpdateIndexSettingsRequest("test_index_1")
{
IndexSettings = new IndexSettings()
{
// V6 Feature
// Sorting = new SortingSettings
// {
// Fields = new Field("Title"),
// },
},
}),
() => elastic.AliasAsync(new BulkAliasRequest
{
Actions = new List <IAliasAction>
{
new AliasAddAction
{
Add = new AliasAddOperation
{
Index = "test_index_1",
Alias = "test_index_2",
},
},
},
}),
() => elastic.GetAliasesPointingToIndexAsync("test_index_1"),
() => elastic.PutAliasAsync("test_index_1", "test_index_3"),
() => elastic.DeleteAliasAsync(new DeleteAliasRequest("test_index_1", "test_index_3")),
() => elastic.DeleteAliasAsync(new DeleteAliasRequest("test_index_1", "test_index_2")),
() => elastic.CreateIndexAsync("test_index_4"),
() => elastic.DeleteIndexAsync("test_index_4"),
() => elastic.CloseIndexAsync("test_index_1"),
() => elastic.OpenIndexAsync("test_index_1"),
() => elastic.PutIndexTemplateAsync(new PutIndexTemplateRequest("test_template_1")),
() => elastic.IndexTemplateExistsAsync("test_template_1"),
() => elastic.DeleteIndexTemplateAsync("test_template_1"),
() => elastic.IndicesShardStoresAsync(),
() => elastic.IndicesStatsAsync("test_index_1"),
() => elastic.DeleteIndexAsync("test_index_1"),
() => elastic.GetAliasAsync(new GetAliasRequest()),
() => elastic.ReindexOnServerAsync(new ReindexOnServerRequest
{
Source = new ReindexSource
{
Remote = new RemoteSource
{
Host = new Uri("http://" + Host()),
Username = "******",
Password = "******"
},
Index = "some_index",
Size = 10
},
Destination = new ReindexDestination
{
Index = "some_index_clone",
}
})
});
}