Module: LogStash::Modules::SettingsMerger

Extended by:
SettingsMerger
Includes:
Util::Loggable
Included in:
SettingsMerger
Defined in:
lib/logstash/modules/settings_merger.rb

Instance Method Summary collapse

Instance Method Details

#format_module_settings(settings_before, settings_after) ⇒ Object 



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# File 'lib/logstash/modules/settings_merger.rb', line 61

def format_module_settings(settings_before, settings_after)
  output = []
  output << "-------- Module Settings ---------"
  settings_after.each do |setting_name, setting|
    setting_before = settings_before.fetch(setting_name, "")
    line = "#{setting_name}: '#{setting}'"
    if setting_before != setting
      line.concat(", was: '#{setting_before}'")
    end
    output << line
  end
  output << "-------- Module Settings ---------"
  output
end

#merge(cli_settings, yml_settings) ⇒ Object 



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# File 'lib/logstash/modules/settings_merger.rb', line 8

def merge(cli_settings, yml_settings)
  # both args are arrays of hashes, e.g.
  # [{"name"=>"mod1", "var.input.tcp.port"=>"3333"}, {"name"=>"mod2"}]
  # [{"name"=>"mod1", "var.input.tcp.port"=>2222, "var.kibana.username"=>"rupert", "var.kibana.password"=>"fotherington"}, {"name"=>"mod3", "var.input.tcp.port"=>4445}]
  merged = []
  # union and group_by preserves order
  # union will also coalesce identical hashes
  union_of_settings = (cli_settings | yml_settings)
  grouped_by_name = union_of_settings.group_by{|e| e["name"]}
  grouped_by_name.each do |_, array|
    if array.size == 2
      merged << array.last.merge(array.first)
    else
      merged.concat(array)
    end
  end
  merged
end

#merge_cloud_settings(module_settings, logstash_settings) ⇒ Object 



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# File 'lib/logstash/modules/settings_merger.rb', line 27

def merge_cloud_settings(module_settings, logstash_settings)
  cloud_id = logstash_settings.get("cloud.id")
  cloud_auth = logstash_settings.get("cloud.auth")
  if cloud_id.nil?
    if cloud_auth.nil?
      return # user did not specify cloud settings
    else
      raise ArgumentError.new("Cloud Auth without Cloud Id")
    end
  end
  if logger.debug?
    settings_copy = LogStash::Util.deep_clone(module_settings)
  end

  module_settings["var.kibana.scheme"] = cloud_id.kibana_scheme
  module_settings["var.kibana.host"] = cloud_id.kibana_host
  # elasticsearch client does not use scheme, it URI parses the host setting
  module_settings["var.elasticsearch.hosts"] = "#{cloud_id.elasticsearch_scheme}://#{cloud_id.elasticsearch_host}"
  unless cloud_auth.nil?
    module_settings["var.elasticsearch.username"] = cloud_auth.username
    module_settings["var.elasticsearch.password"] = cloud_auth.password
    module_settings["var.kibana.username"] = cloud_auth.username
    module_settings["var.kibana.password"] = cloud_auth.password
  end
  if logger.debug?
    format_module_settings(settings_copy, module_settings).each {|line| logger.debug(line)}
  end
end

#merge_kibana_auth!(module_settings) ⇒ Object 



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# File 'lib/logstash/modules/settings_merger.rb', line 56

def merge_kibana_auth!(module_settings)
  module_settings["var.kibana.username"] = module_settings["var.elasticsearch.username"] if module_settings["var.kibana.username"].nil?
  module_settings["var.kibana.password"] = module_settings["var.elasticsearch.password"] if module_settings["var.kibana.password"].nil?
end