app/services/clusters/verify_service.rb


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# frozen_string_literal: true

module Clusters
  class VerifyService
    attr_reader :cluster

    def initialize(cluster)
      @cluster = cluster
    end

    def execute
      verify_connection!
    rescue *Gitlab::Kubernetes::Errors::CONNECTION
      :unreachable
    rescue *Gitlab::Kubernetes::Errors::AUTHENTICATION
      :authentication_failure
    rescue Kubeclient::HttpError => e
      kubeclient_error_status(e)
    rescue => e
      Gitlab::Sentry.track_acceptable_exception(e, extra: { cluster_id: cluster.id })

      :unknown_failure
    else
      :connected
    end

    private

    def verify_connection!
      cluster.kubeclient.core_client.discover
    end

    # KubeClient uses the same error class
    # For connection errors (eg. timeout) and
    # for Kubernetes errors.
    def kubeclient_error_status(error)
      if timeout?(error.message)
        :unreachable
      else
        :authentication_failure
      end
    end

    def timeout?(message)
      message&.match?(/timed out|timeout/i)
    end
  end
end