Class: Kitsune::Kit::Operations::ServiceFirewall

Inherits:
Object
  • Object
show all
Defined in:
lib/kitsune/kit/operations/service_firewall.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config:, type:, service:, transport:, state_store:, resource:) ⇒ ServiceFirewall

Returns a new instance of ServiceFirewall.



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# File 'lib/kitsune/kit/operations/service_firewall.rb', line 11

def initialize(config:, type:, service:, transport:, state_store:, resource:)
  @config = config
  @type = type
  @service = service
  @transport = transport
  @state_store = state_store
  @resource = resource
  @owned_rules = []
  @drop_owned = false
end

Instance Attribute Details

#drop_owned ⇒ Object (readonly)

Returns the value of attribute drop_owned.



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# File 'lib/kitsune/kit/operations/service_firewall.rb', line 9

def drop_owned
  @drop_owned
end

#owned_rules ⇒ Object (readonly)

Returns the value of attribute owned_rules.



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# File 'lib/kitsune/kit/operations/service_firewall.rb', line 9

def owned_rules
  @owned_rules
end

Instance Method Details

#reconcile(previous) ⇒ Object 



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# File 'lib/kitsune/kit/operations/service_firewall.rb', line 22

def reconcile(previous)
  unless service.publish
    remove_state(previous)
    return
  end

  @transaction_added = []
  @transaction_deleted = []
  ensure_drop_rule(previous, tracked: true)
  added = service.allowed_cidrs.reject { |cidr| rule_exists?(allow_rule(cidr)) }.each do |cidr|
    add_tracked_rule(allow_rule(cidr))
  end
  retained = previous_rules_for_current_port(previous) & service.allowed_cidrs
  @owned_rules = (retained + added).uniq
  remove_stale(previous, tracked: true)
rescue StandardError => e
  begin
    rollback_transaction
  rescue StandardError => recovery_error
    raise Errors::VerificationError.new(
      "Docker firewall reconciliation and recovery both failed",
      hint: "Inspect DOCKER-USER rules marked by Kitsune Kit before retrying.",
      context: {
        original_error: error_name(e), recovery_error: error_name(recovery_error)
      }
    )
  end
  raise e
ensure
  @transaction_added = nil
  @transaction_deleted = nil
end

#remove ⇒ Object 



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# File 'lib/kitsune/kit/operations/service_firewall.rb', line 55

def remove
  remove_state(managed_state)
end

#restore(previous) ⇒ Object 



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# File 'lib/kitsune/kit/operations/service_firewall.rb', line 59

def restore(previous)
  return unless previous["published"]

  port = previous.fetch("port")
  ensure_rule(drop_rule(port: port))
  previous.fetch("firewall_rules_added", []).each do |cidr|
    ensure_rule(allow_rule(cidr, port: port))
  end
end

#restore_after_failure(previous) ⇒ Object 



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# File 'lib/kitsune/kit/operations/service_firewall.rb', line 69

def restore_after_failure(previous)
  remove_state(
    "published" => service.publish,
    "port" => service.port,
    "firewall_rules_added" => @owned_rules,
    "firewall_drop_added" => @drop_owned
  )
  restore(previous || {})
end