297 lines
9.1 KiB
Ruby
297 lines
9.1 KiB
Ruby
# frozen_string_literal: true
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module Clusters
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module Platforms
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class Kubernetes < ApplicationRecord
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include Gitlab::Kubernetes
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include EnumWithNil
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include AfterCommitQueue
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include ReactiveCaching
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include NullifyIfBlank
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RESERVED_NAMESPACES = %w(gitlab-managed-apps).freeze
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self.table_name = 'cluster_platforms_kubernetes'
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self.reactive_cache_work_type = :external_dependency
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belongs_to :cluster, inverse_of: :platform_kubernetes, class_name: 'Clusters::Cluster'
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attr_encrypted :password,
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mode: :per_attribute_iv,
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key: Settings.attr_encrypted_db_key_base_truncated,
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algorithm: 'aes-256-cbc'
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attr_encrypted :token,
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mode: :per_attribute_iv,
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key: Settings.attr_encrypted_db_key_base_truncated,
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algorithm: 'aes-256-cbc'
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before_validation :enforce_namespace_to_lower_case
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before_validation :enforce_ca_whitespace_trimming
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validates :namespace,
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allow_nil: true,
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length: 1..63,
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format: {
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with: Gitlab::Regex.kubernetes_namespace_regex,
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message: Gitlab::Regex.kubernetes_namespace_regex_message
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}
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validates :namespace, exclusion: { in: RESERVED_NAMESPACES }
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validate :no_namespace, unless: :allow_user_defined_namespace?
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# We expect to be `active?` only when enabled and cluster is created (the api_url is assigned)
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validates :api_url, public_url: true, presence: true
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validates :token, presence: true
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validates :ca_cert, certificate: true, allow_blank: true, if: :ca_cert_changed?
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validate :prevent_modification, on: :update
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alias_attribute :ca_pem, :ca_cert
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enum_with_nil authorization_type: {
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unknown_authorization: nil,
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rbac: 1,
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abac: 2
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}
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default_value_for :authorization_type, :rbac
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nullify_if_blank :namespace
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def enabled?
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!!cluster&.enabled?
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end
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alias_method :active?, :enabled?
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def provided_by_user?
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!!cluster&.provided_by_user?
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end
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def allow_user_defined_namespace?
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!!cluster&.allow_user_defined_namespace?
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end
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def predefined_variables(project:, environment_name:, kubernetes_namespace: nil)
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Gitlab::Ci::Variables::Collection.new.tap do |variables|
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variables.append(key: 'KUBE_URL', value: api_url)
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if ca_pem.present?
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variables
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.append(key: 'KUBE_CA_PEM', value: ca_pem)
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.append(key: 'KUBE_CA_PEM_FILE', value: ca_pem, file: true)
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end
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if !cluster.managed? || cluster.management_project == project
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namespace = kubernetes_namespace || default_namespace(project, environment_name: environment_name)
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variables
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.append(key: 'KUBE_TOKEN', value: token, public: false, masked: true)
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.append(key: 'KUBE_NAMESPACE', value: namespace)
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.append(key: 'KUBECONFIG', value: kubeconfig(namespace), public: false, file: true)
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elsif persisted_namespace = find_persisted_namespace(project, environment_name: environment_name)
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variables.concat(persisted_namespace.predefined_variables)
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end
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variables.concat(cluster.predefined_variables)
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end
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end
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def calculate_reactive_cache_for(environment)
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return unless enabled?
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pods = read_pods(environment.deployment_namespace)
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deployments = read_deployments(environment.deployment_namespace)
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ingresses = read_ingresses(environment.deployment_namespace)
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# extract only the data required for display to avoid unnecessary caching
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{
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pods: extract_relevant_pod_data(pods),
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deployments: extract_relevant_deployment_data(deployments),
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ingresses: extract_relevant_ingress_data(ingresses)
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}
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end
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def terminals(environment, data)
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pods = filter_by_project_environment(data[:pods], environment.project.full_path_slug, environment.slug)
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terminals = pods.flat_map { |pod| terminals_for_pod(api_url, environment.deployment_namespace, pod) }.compact
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terminals.each { |terminal| add_terminal_auth(terminal, **terminal_auth) }
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end
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def kubeclient
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@kubeclient ||= build_kube_client!
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end
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def rollout_status(environment, data)
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project = environment.project
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deployments = filter_by_project_environment(data[:deployments], project.full_path_slug, environment.slug)
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pods = filter_by_project_environment(data[:pods], project.full_path_slug, environment.slug)
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ingresses = data[:ingresses].presence || []
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::Gitlab::Kubernetes::RolloutStatus.from_deployments(*deployments, pods_attrs: pods, ingresses: ingresses)
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end
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def ingresses(namespace)
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ingresses = read_ingresses(namespace)
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ingresses.map { |ingress| ::Gitlab::Kubernetes::Ingress.new(ingress) }
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end
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def patch_ingress(namespace, ingress, data)
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kubeclient.patch_ingress(ingress.name, data, namespace)
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end
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def kubeconfig(namespace)
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to_kubeconfig(
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url: api_url,
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namespace: namespace,
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token: token,
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ca_pem: ca_pem)
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end
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private
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def default_namespace(project, environment_name:)
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Gitlab::Kubernetes::DefaultNamespace.new(
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cluster,
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project: project
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).from_environment_name(environment_name)
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end
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def find_persisted_namespace(project, environment_name:)
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Clusters::KubernetesNamespaceFinder.new(
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cluster,
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project: project,
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environment_name: environment_name
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).execute
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end
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def read_pods(namespace)
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kubeclient.get_pods(namespace: namespace).as_json
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rescue Kubeclient::ResourceNotFoundError
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[]
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end
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def read_deployments(namespace)
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kubeclient.get_deployments(namespace: namespace).as_json
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rescue Kubeclient::ResourceNotFoundError
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[]
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end
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def read_ingresses(namespace)
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kubeclient.get_ingresses(namespace: namespace).as_json
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rescue Kubeclient::ResourceNotFoundError
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[]
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end
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def build_kube_client!
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raise "Incomplete settings" unless api_url
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unless (username && password) || token
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raise "Either username/password or token is required to access API"
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end
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Gitlab::Kubernetes::KubeClient.new(
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api_url,
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auth_options: kubeclient_auth_options,
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ssl_options: kubeclient_ssl_options,
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http_proxy_uri: ENV['http_proxy']
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)
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end
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def kubeclient_ssl_options
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opts = { verify_ssl: OpenSSL::SSL::VERIFY_PEER }
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if ca_pem.present?
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opts[:cert_store] = OpenSSL::X509::Store.new
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file = Tempfile.new('cluster_ca_pem_temp')
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begin
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file.write(ca_pem)
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file.rewind
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opts[:cert_store].add_file(file.path)
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ensure
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file.close
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file.unlink # deletes the temp file
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end
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end
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opts
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end
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def kubeclient_auth_options
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{ bearer_token: token }
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end
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def terminal_auth
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{
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token: token,
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ca_pem: ca_pem,
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max_session_time: Gitlab::CurrentSettings.terminal_max_session_time
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}
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end
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def enforce_namespace_to_lower_case
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self.namespace = self.namespace&.downcase
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end
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def enforce_ca_whitespace_trimming
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self.ca_pem = self.ca_pem&.strip
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self.token = self.token&.strip
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end
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def no_namespace
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if namespace
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errors.add(:namespace, 'only allowed for project cluster')
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end
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end
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def prevent_modification
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return if provided_by_user?
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if api_url_changed? || attribute_changed?(:token) || ca_pem_changed?
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errors.add(:base, _('Cannot modify managed Kubernetes cluster'))
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return false
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end
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true
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end
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def extract_relevant_pod_data(pods)
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pods.map do |pod|
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{
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'metadata' => pod.fetch('metadata', {})
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.slice('name', 'generateName', 'labels', 'annotations', 'creationTimestamp'),
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'status' => pod.fetch('status', {}).slice('phase'),
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'spec' => {
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'containers' => pod.fetch('spec', {})
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.fetch('containers', [])
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.map { |c| c.slice('name') }
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}
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}
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end
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end
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def extract_relevant_deployment_data(deployments)
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deployments.map do |deployment|
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{
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'metadata' => deployment.fetch('metadata', {}).slice('name', 'generation', 'labels', 'annotations'),
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'spec' => deployment.fetch('spec', {}).slice('replicas'),
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'status' => deployment.fetch('status', {}).slice('observedGeneration')
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}
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end
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end
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def extract_relevant_ingress_data(ingresses)
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ingresses.map do |ingress|
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{
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'metadata' => ingress.fetch('metadata', {}).slice('name', 'labels', 'annotations')
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}
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end
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end
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end
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end
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end
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