Module: Fluent::ElasticsearchIndexTemplate
- Included in:
- Plugin::ElasticsearchOutput
- Defined in:
- lib/fluent/plugin/elasticsearch_index_template.rb
Instance Method Summary collapse
- #get_custom_template(template_file, customize_template) ⇒ Object
- #get_template(template_file) ⇒ Object
- #indexcreation(index_name) ⇒ Object
- #retry_operate(max_retries) ⇒ Object
- #template_custom_install(template_name, template_file, overwrite, customize_template, index_prefix, rollover_index, deflector_alias_name, app_name, index_date_pattern) ⇒ Object
- #template_exists?(name) ⇒ Boolean
- #template_install(name, template_file, overwrite) ⇒ Object
- #template_put(name, template) ⇒ Object
- #templates_hash_install(templates, overwrite) ⇒ Object
Instance Method Details
#get_custom_template(template_file, customize_template) ⇒ Object
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# File 'lib/fluent/plugin/elasticsearch_index_template.rb', line 13 def get_custom_template(template_file, customize_template) if !File.exists?(template_file) raise "If you specify a template_name you must specify a valid template file (checked '#{template_file}')!" end file_contents = IO.read(template_file).gsub(/\n/,'') customize_template.each do |key, value| file_contents = file_contents.gsub(key,value.downcase) end JSON.parse(file_contents) end |
#get_template(template_file) ⇒ Object
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# File 'lib/fluent/plugin/elasticsearch_index_template.rb', line 5 def get_template(template_file) if !File.exists?(template_file) raise "If you specify a template_name you must specify a valid template file (checked '#{template_file}')!" end file_contents = IO.read(template_file).gsub(/\n/,'') JSON.parse(file_contents) end |
#indexcreation(index_name) ⇒ Object
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# File 'lib/fluent/plugin/elasticsearch_index_template.rb', line 54 def indexcreation(index_name) client.indices.create(:index => index_name) rescue Elasticsearch::Transport::Transport::Error => e log.error("Error while index creation - #{index_name}: #{e.inspect}") end |
#retry_operate(max_retries) ⇒ Object
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# File 'lib/fluent/plugin/elasticsearch_index_template.rb', line 31 def retry_operate(max_retries) return unless block_given? retries = 0 begin yield rescue *client.transport.host_unreachable_exceptions, Timeout::Error => e @_es = nil @_es_info = nil if retries < max_retries retries += 1 sleep 2**retries log.warn "Could not communicate to Elasticsearch, resetting connection and trying again. #{e.}" retry end raise Fluent::Plugin::ElasticsearchError::RetryableOperationExhaustedFailure, "Could not communicate to Elasticsearch after #{retries} retries. #{e.}" end end |
#template_custom_install(template_name, template_file, overwrite, customize_template, index_prefix, rollover_index, deflector_alias_name, app_name, index_date_pattern) ⇒ Object
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# File 'lib/fluent/plugin/elasticsearch_index_template.rb', line 74 def template_custom_install(template_name, template_file, overwrite, customize_template, index_prefix, rollover_index, deflector_alias_name, app_name, index_date_pattern) template_custom_name=template_name.downcase if overwrite template_put(template_custom_name, get_custom_template(template_file, customize_template)) log.info("Template '#{template_custom_name}' overwritten with #{template_file}.") else if !template_exists?(template_custom_name) template_put(template_custom_name, get_custom_template(template_file, customize_template)) log.info("Template configured, but no template installed. Installed '#{template_custom_name}' from #{template_file}.") else log.info("Template configured and already installed.") end end if rollover_index if !client.indices.exists_alias(:name => deflector_alias_name) index_name_temp='<'+index_prefix.downcase+'-'+app_name.downcase+'-{'+index_date_pattern+'}-000001>' indexcreation(index_name_temp) client.indices.put_alias(:index => index_name_temp, :name => deflector_alias_name) log.info("The alias '#{deflector_alias_name}' is created for the index '#{index_name_temp}'") else log.info("The alias '#{deflector_alias_name}' is already present") end else log.info("No index and alias creation action performed because rollover_index is set to '#{rollover_index}'") end end |
#template_exists?(name) ⇒ Boolean
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# File 'lib/fluent/plugin/elasticsearch_index_template.rb', line 24 def template_exists?(name) client.indices.get_template(:name => name) return true rescue Elasticsearch::Transport::Transport::Errors::NotFound return false end |
#template_install(name, template_file, overwrite) ⇒ Object
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# File 'lib/fluent/plugin/elasticsearch_index_template.rb', line 60 def template_install(name, template_file, overwrite) if overwrite template_put(name, get_template(template_file)) log.info("Template '#{name}' overwritten with #{template_file}.") return end if !template_exists?(name) template_put(name, get_template(template_file)) log.info("Template configured, but no template installed. Installed '#{name}' from #{template_file}.") else log.info("Template configured and already installed.") end end |
#template_put(name, template) ⇒ Object
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# File 'lib/fluent/plugin/elasticsearch_index_template.rb', line 50 def template_put(name, template) client.indices.put_template(:name => name, :body => template) end |
#templates_hash_install(templates, overwrite) ⇒ Object
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# File 'lib/fluent/plugin/elasticsearch_index_template.rb', line 102 def templates_hash_install(templates, overwrite) templates.each do |key, value| template_install(key, value, overwrite) end end |