Class: ForestAdminAgent::Services::SSECacheInvalidation

Inherits:
Object
  • Object
show all
Includes:
Http::Exceptions, ForestAdminDatasourceToolkit::Exceptions
Defined in:
lib/forest_admin_agent/services/sse_cache_invalidation.rb

Constant Summary collapse

MESSAGE_CACHE_KEYS = 
{
  'refresh-users': %w[forest.users],
  'refresh-roles': %w[forest.collections],
  'refresh-renderings': %w[forest.collections forest.rendering]
  # TODO: add one for ip whitelist when server implement it
}.freeze

Class Method Summary collapse

Class Method Details

.run ⇒ Object 



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# File 'lib/forest_admin_agent/services/sse_cache_invalidation.rb', line 16

def self.run
  uri = "#{Facades::Container.config_from_cache[:forest_server_url]}/liana/v4/subscribe-to-events"
  headers = {
    'forest-secret-key' => Facades::Container.config_from_cache[:env_secret],
    'Accept' => 'text/event-stream'
  }

  begin
    SSE::Client.new(uri, headers: headers) do |client|
      client.on_event do |event|
        next if event.type == :heartbeat

        MESSAGE_CACHE_KEYS[event.type]&.each do |cache_key|
          Permissions.invalidate_cache(cache_key)
          ForestAdminAgent::Facades::Container.logger.log(
            'Info',
            "invalidate cache #{MESSAGE_CACHE_KEYS[event.type]} for event #{event.type}"
          )
        end

        ForestAdminAgent::Facades::Container.logger.log(
          'Info',
          "SSECacheInvalidation: unhandled message from server: #{event.type}"
        )
      end
    end
  rescue StandardError => e
    ForestAdminAgent::Facades::Container.logger.log(
      'Debug',
      'SSE connection to forestadmin server'
    )

    ForestAdminAgent::Facades::Container.logger.log(
      'Warning',
      'SSE connection to forestadmin server closed unexpectedly, retrying.'
    )

    raise ServiceUnavailableError.new(
      'Failed to reach SSE data from ForestAdmin server',
      details: { error: e.message },
      cause: e
    )
  end
end