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# frozen_string_literal: true
module Clusters
module Applications
class ElasticStack < ApplicationRecord
VERSION = '1.8.0'
ELASTICSEARCH_PORT = 9200
self.table_name = 'clusters_applications_elastic_stacks'
include ::Clusters::Concerns::ApplicationCore
include ::Clusters::Concerns::ApplicationStatus
include ::Clusters::Concerns::ApplicationVersion
include ::Clusters::Concerns::ApplicationData
include ::Gitlab::Utils::StrongMemoize
default_value_for :version, VERSION
def set_initial_status
return unless not_installable?
return unless cluster&.application_ingress_available?
ingress = cluster.application_ingress
self.status = status_states[:installable] if ingress.external_ip_or_hostname?
end
def chart
'stable/elastic-stack'
end
def values
content_values.to_yaml
end
def install_command
Gitlab::Kubernetes::Helm::InstallCommand.new(
name: 'elastic-stack',
version: VERSION,
rbac: cluster.platform_kubernetes_rbac?,
chart: chart,
files: files
)
end
def uninstall_command
Gitlab::Kubernetes::Helm::DeleteCommand.new(
name: 'elastic-stack',
rbac: cluster.platform_kubernetes_rbac?,
files: files,
postdelete: post_delete_script
)
end
def elasticsearch_client
strong_memoize(:elasticsearch_client) do
next unless kube_client
proxy_url = kube_client.proxy_url('service', 'elastic-stack-elasticsearch-client', ::Clusters::Applications::ElasticStack::ELASTICSEARCH_PORT, Gitlab::Kubernetes::Helm::NAMESPACE)
Elasticsearch::Client.new(url: proxy_url) do |faraday|
# ensures headers containing auth data are appended to original client options
faraday.headers.merge!(kube_client.headers)
# ensure TLS certs are properly verified
faraday.ssl[:verify] = kube_client.ssl_options[:verify_ssl]
faraday.ssl[:cert_store] = kube_client.ssl_options[:cert_store]
end
rescue Kubeclient::HttpError => error
# If users have mistakenly set parameters or removed the depended clusters,
# `proxy_url` could raise an exception because gitlab can not communicate with the cluster.
# We check for a nil client in downstream use and behaviour is equivalent to an empty state
log_exception(error, :failed_to_create_elasticsearch_client)
end
end
private
def specification
{
"kibana" => {
"ingress" => {
"hosts" => [kibana_hostname],
"tls" => [{
"hosts" => [kibana_hostname],
"secretName" => "kibana-cert"
}]
}
}
}
end
def content_values
YAML.load_file(chart_values_file).deep_merge!(specification)
end
def post_delete_script
[
Gitlab::Kubernetes::KubectlCmd.delete("pvc", "--selector", "release=elastic-stack")
].compact
end
def kube_client
cluster&.kubeclient&.core_client
end
end
end
end
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