Class: ElasticAPM::CentralConfig Private

Inherits:
Object
  • Object
show all
Includes:
Logging
Defined in:
lib/elastic_apm/central_config.rb,
lib/elastic_apm/central_config/cache_control.rb

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Defined Under Namespace

Classes: CacheControl, ClientError, ResponseError, ServerError

Constant Summary collapse

DEFAULT_MAX_AGE =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

300

Constants included from Logging

Logging::LEVELS, Logging::PREFIX

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Logging

#debug, #error, #fatal, #info, #warn

Constructor Details

#initialize(config) ⇒ CentralConfig

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of CentralConfig.



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# File 'lib/elastic_apm/central_config.rb', line 42

def initialize(config)
  @config = config
  @modified_options = {}
  @http = Transport::Connection::Http.new(config)
  @etag = 1
end

Instance Attribute Details

#config ⇒ Object (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/elastic_apm/central_config.rb', line 49

def config
  @config
end

#promise ⇒ Object (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

for specs



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# File 'lib/elastic_apm/central_config.rb', line 50

def promise
  @promise
end

#scheduled_task ⇒ Object (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

for specs



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# File 'lib/elastic_apm/central_config.rb', line 50

def scheduled_task
  @scheduled_task
end

Instance Method Details

#assign(update) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/elastic_apm/central_config.rb', line 91

def assign(update)
  # For each updated option, store the original value,
  # unless already stored
  update.each_key do |key|
    @modified_options[key] ||= config.get(key.to_sym)&.value
  end

  # If the new update doesn't set a previously modified option,
  # revert it to the original
  @modified_options.each_key do |key|
    next if update.key?(key)
    update[key] = @modified_options.delete(key)
  end

  @config.replace_options(update)
end

#fetch_and_apply_config ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/elastic_apm/central_config.rb', line 66

def fetch_and_apply_config
  @promise =
    Concurrent::Promise
    .execute { fetch_config }
    .on_success { |resp| handle_success(resp) }
    .rescue { |err| handle_error(err) }
end

#fetch_config ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/elastic_apm/central_config.rb', line 74

def fetch_config
  resp = perform_request

  # rubocop:disable Lint/DuplicateBranch
  case resp.status
  when 200..299
    resp
  when 300..399
    resp
  when 400..499
    raise ClientError, resp
  when 500..599
    raise ServerError, resp
  end
  # rubocop:enable Lint/DuplicateBranch
end

#handle_forking! ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/elastic_apm/central_config.rb', line 108

def handle_forking!
  stop
  start
end

#start ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/elastic_apm/central_config.rb', line 52

def start
  return unless config.central_config?

  debug 'Starting CentralConfig'

  fetch_and_apply_config
end

#stop ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/elastic_apm/central_config.rb', line 60

def stop
  debug 'Stopping CentralConfig'

  @scheduled_task&.cancel
end