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# frozen_string_literal: true
module Clusters
module Concerns
module ElasticsearchClient
include ::Gitlab::Utils::StrongMemoize
ELASTICSEARCH_PORT = 9200
ELASTICSEARCH_NAMESPACE = 'gitlab-managed-apps'
def elasticsearch_client(timeout: nil)
strong_memoize(:elasticsearch_client) do
kube_client = cluster&.kubeclient&.core_client
next unless kube_client
proxy_url = kube_client.proxy_url('service', service_name, ELASTICSEARCH_PORT, ELASTICSEARCH_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]
faraday.options.timeout = timeout unless timeout.nil?
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)
nil
end
end
end
end
end
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