Module: Fluent::ElasticsearchIndexTemplate

Included in:
Plugin::ElasticsearchOutput
Defined in:
lib/fluent/plugin/elasticsearch_index_template.rb

Instance Method Summary collapse

Instance Method Details

#get_template(template_file) ⇒ Object 



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# File 'lib/fluent/plugin/elasticsearch_index_template.rb', line 3

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

#retry_install(max_retries) ⇒ Object 



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# File 'lib/fluent/plugin/elasticsearch_index_template.rb', line 18

def retry_install(max_retries)
  return unless block_given?
  retries = 0
  begin
    yield
  rescue Fluent::Plugin::ElasticsearchOutput::ConnectionFailure, Timeout::Error => e
    @_es = nil
    @_es_info = nil
    if retries < max_retries
      retries += 1
      sleep 2**retries
      log.warn "Could not push template(s) to Elasticsearch, resetting connection and trying again. #{e.message}"
      retry
    end
    raise Fluent::Plugin::ElasticsearchOutput::ConnectionFailure, "Could not push template(s) to Elasticsearch after #{retries} retries. #{e.message}"
  end
end

#template_exists?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fluent/plugin/elasticsearch_index_template.rb', line 11

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 40

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 36

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 54

def templates_hash_install(templates, overwrite)
  templates.each do |key, value|
    template_install(key, value, overwrite)
  end
end