129 lines
4.1 KiB
Ruby
129 lines
4.1 KiB
Ruby
# frozen_string_literal: true
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module Clusters
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module Applications
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class ElasticStack < ApplicationRecord
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VERSION = '3.0.0'
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ELASTICSEARCH_PORT = 9200
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self.table_name = 'clusters_applications_elastic_stacks'
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include ::Clusters::Concerns::ApplicationCore
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include ::Clusters::Concerns::ApplicationStatus
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include ::Clusters::Concerns::ApplicationVersion
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include ::Clusters::Concerns::ApplicationData
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include ::Gitlab::Utils::StrongMemoize
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default_value_for :version, VERSION
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def chart
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'elastic-stack/elastic-stack'
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end
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def repository
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'https://charts.gitlab.io'
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end
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def install_command
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Gitlab::Kubernetes::Helm::InstallCommand.new(
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name: 'elastic-stack',
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version: VERSION,
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rbac: cluster.platform_kubernetes_rbac?,
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chart: chart,
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repository: repository,
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files: files,
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preinstall: migrate_to_3_script,
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postinstall: post_install_script
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)
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end
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def uninstall_command
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Gitlab::Kubernetes::Helm::DeleteCommand.new(
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name: 'elastic-stack',
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rbac: cluster.platform_kubernetes_rbac?,
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files: files,
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postdelete: post_delete_script
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)
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end
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def files
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super.merge('wait-for-elasticsearch.sh': File.read("#{Rails.root}/vendor/elastic_stack/wait-for-elasticsearch.sh"))
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end
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def elasticsearch_client
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strong_memoize(:elasticsearch_client) do
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next unless kube_client
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proxy_url = kube_client.proxy_url('service', service_name, ::Clusters::Applications::ElasticStack::ELASTICSEARCH_PORT, Gitlab::Kubernetes::Helm::NAMESPACE)
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Elasticsearch::Client.new(url: proxy_url) do |faraday|
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# ensures headers containing auth data are appended to original client options
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faraday.headers.merge!(kube_client.headers)
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# ensure TLS certs are properly verified
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faraday.ssl[:verify] = kube_client.ssl_options[:verify_ssl]
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faraday.ssl[:cert_store] = kube_client.ssl_options[:cert_store]
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end
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rescue Kubeclient::HttpError => error
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# If users have mistakenly set parameters or removed the depended clusters,
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# `proxy_url` could raise an exception because gitlab can not communicate with the cluster.
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# We check for a nil client in downstream use and behaviour is equivalent to an empty state
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log_exception(error, :failed_to_create_elasticsearch_client)
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nil
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end
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end
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def chart_above_v2?
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Gem::Version.new(version) >= Gem::Version.new('2.0.0')
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end
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def chart_above_v3?
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Gem::Version.new(version) >= Gem::Version.new('3.0.0')
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end
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private
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def service_name
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chart_above_v3? ? 'elastic-stack-elasticsearch-master' : 'elastic-stack-elasticsearch-client'
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end
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def pvc_selector
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chart_above_v3? ? "app=elastic-stack-elasticsearch-master" : "release=elastic-stack"
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end
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def post_install_script
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[
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"timeout -t60 sh /data/helm/elastic-stack/config/wait-for-elasticsearch.sh http://elastic-stack-elasticsearch-master:9200"
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]
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end
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def post_delete_script
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[
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Gitlab::Kubernetes::KubectlCmd.delete("pvc", "--selector", pvc_selector, "--namespace", Gitlab::Kubernetes::Helm::NAMESPACE)
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]
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end
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def kube_client
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cluster&.kubeclient&.core_client
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end
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def migrate_to_3_script
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return [] if !updating? || chart_above_v3?
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# Chart version 3.0.0 moves to our own chart at https://gitlab.com/gitlab-org/charts/elastic-stack
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# and is not compatible with pre-existing resources. We first remove them.
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[
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Gitlab::Kubernetes::Helm::DeleteCommand.new(
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name: 'elastic-stack',
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rbac: cluster.platform_kubernetes_rbac?,
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files: files
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).delete_command,
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Gitlab::Kubernetes::KubectlCmd.delete("pvc", "--selector", "release=elastic-stack", "--namespace", Gitlab::Kubernetes::Helm::NAMESPACE)
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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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