bool createIndex(string indexName, ElasticClient client)
{
if (client.IndexExists(i => i.Index(indexName)).Exists)
{
var response = client.DeleteIndex(i => i.Index(indexName));
Logger.Current.Verbose("Deleted index." + response.ConnectionStatus.ToString());
}
var word_delimiter_filter = new WordDelimiterTokenFilter()
{
CatenateAll = true, GenerateNumberParts = false, SplitOnCaseChange = false, GenerateWordParts = false, SplitOnNumerics = false, PreserveOriginal = true
};
var customAnalyzer = new CustomAnalyzer()
{
Filter = new List <String>()
{
"lowercase", "word_delimiter_filter"
},
Tokenizer = "whitespace"
};
var createResult = client.CreateIndex(indexName, index => index.Analysis(a => a.TokenFilters(t => t.Add("word_delimiter_filter", word_delimiter_filter)).Analyzers(an => an.Add("custom", customAnalyzer)))
.AddMapping <Tag>(tmd => MapTagCompletionFields(tmd)));
return(createResult.ConnectionStatus.Success);
}
private CreateIndexDescriptor GetCreateIndexDescriptor(string indexName, Type objectType)
{
#region [ Default analyzers and filters ]
// Add custom index analyzers
CustomAnalyzers.Add("full_string_index_analyzer", new CustomAnalyzer {
Tokenizer = "standard", Filter = new List <string> {
"standard", "string_delimeter", "stop", "asciifolding", "string_ngrams", "lowercase"
}
});
CustomAnalyzers.Add("full_keyword_index_analyzer", new CustomAnalyzer {
Tokenizer = "keyword", Filter = new List <string> {
"standard", "stop", "asciifolding"
}
});
// Add custom search analyzers
CustomAnalyzers.Add("full_string_search_analyzer", new CustomAnalyzer {
Tokenizer = "standard", Filter = new List <string> {
"standard", "stop", "asciifolding", "lowercase"
}
});
#endregion
// Create a default descriptor
CreateIndexDescriptor descriptor = null;
// Create default settings
var settings = new IndexSettings()
{
NumberOfReplicas = 1, NumberOfShards = 2
};
// Add additional settings
settings.Analysis = new Analysis();
settings.Analysis.TokenFilters = new TokenFilters();
settings.Analysis.Analyzers = new Analyzers();
//settings.Add("index.mapping.single_type", false);
settings.Add("index.mapping.total_fields.limit", 2000);
settings.Add("index.mapping.nested_fields.limit", 500);
settings.Add("index.max_docvalue_fields_search", 500);
// Create token filters
var stringNGramsTokenFilter = new EdgeNGramTokenFilter {
MinGram = 2, MaxGram = 20
};
var stringDelimiterTokenFilter = new WordDelimiterTokenFilter {
GenerateWordParts = true, CatenateAll = true, CatenateNumbers = true, CatenateWords = true, SplitOnCaseChange = true, SplitOnNumerics = true, PreserveOriginal = true
};
// Add filters
settings.Analysis.TokenFilters.Add("string_ngrams", stringNGramsTokenFilter);
settings.Analysis.TokenFilters.Add("string_delimeter", stringDelimiterTokenFilter);
// Add analyzers
CustomAnalyzers.ToList().ForEach(a =>
{
settings.Analysis.Analyzers.Add(a.Key, a.Value);
});
// Create the config
var indexConfig = new IndexState
{
Settings = settings
};
#region [ LogRecord Mapping ]
// Fill the descriptor according to the type
if (objectType == typeof(ESLogRecord))
{
descriptor = new CreateIndexDescriptor(indexName)
.InitializeUsing(indexConfig)
.Mappings(ms => ms.Map <ESLogRecord>(m => m.AutoMap()));
}
#endregion
return(descriptor);
}