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|
# frozen_string_literal: true
module Clusters
module Applications
class Prometheus < ApplicationRecord
include PrometheusAdapter
VERSION = '10.4.1'
self.table_name = 'clusters_applications_prometheus'
include ::Clusters::Concerns::ApplicationCore
include ::Clusters::Concerns::ApplicationStatus
include ::Clusters::Concerns::ApplicationVersion
include ::Clusters::Concerns::ApplicationData
include AfterCommitQueue
default_value_for :version, VERSION
scope :preload_cluster_platform, -> { preload(cluster: [:platform_kubernetes]) }
scope :with_clusters_with_cilium, -> { joins(:cluster).merge(Clusters::Cluster.with_available_cilium) }
attr_encrypted :alert_manager_token,
mode: :per_attribute_iv,
key: Settings.attr_encrypted_db_key_base_truncated,
algorithm: 'aes-256-gcm'
after_destroy do
run_after_commit do
disable_prometheus_integration
end
end
state_machine :status do
after_transition any => [:installed] do |application|
application.run_after_commit do
Clusters::Applications::ActivateServiceWorker
.perform_async(application.cluster_id, ::PrometheusService.to_param) # rubocop:disable CodeReuse/ServiceClass
end
end
after_transition any => :updating do |application|
application.update(last_update_started_at: Time.current)
end
end
def updated_since?(timestamp)
last_update_started_at &&
last_update_started_at > timestamp &&
!update_errored?
end
def chart
"#{name}/prometheus"
end
def repository
'https://gitlab-org.gitlab.io/cluster-integration/helm-stable-archive'
end
def service_name
'prometheus-prometheus-server'
end
def service_port
80
end
def install_command
Gitlab::Kubernetes::Helm::InstallCommand.new(
name: name,
repository: repository,
version: VERSION,
rbac: cluster.platform_kubernetes_rbac?,
chart: chart,
files: files,
postinstall: install_knative_metrics
)
end
def patch_command(values)
::Gitlab::Kubernetes::Helm::PatchCommand.new(
name: name,
repository: repository,
version: version,
rbac: cluster.platform_kubernetes_rbac?,
chart: chart,
files: files_with_replaced_values(values)
)
end
def uninstall_command
Gitlab::Kubernetes::Helm::DeleteCommand.new(
name: name,
rbac: cluster.platform_kubernetes_rbac?,
files: files,
predelete: delete_knative_istio_metrics
)
end
# Returns a copy of files where the values of 'values.yaml'
# are replaced by the argument.
#
# See #values for the data format required
def files_with_replaced_values(replaced_values)
files.merge('values.yaml': replaced_values)
end
def prometheus_client
return unless kube_client
proxy_url = kube_client.proxy_url('service', service_name, service_port, Gitlab::Kubernetes::Helm::NAMESPACE)
# ensures headers containing auth data are appended to original k8s client options
options = kube_client.rest_client.options
.merge(prometheus_client_default_options)
.merge(headers: kube_client.headers)
Gitlab::PrometheusClient.new(proxy_url, options)
rescue Kubeclient::HttpError, Errno::ECONNRESET, Errno::ECONNREFUSED, Errno::ENETUNREACH
# 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.
# Since `PrometheusAdapter#can_query?` is eargely loaded on environement pages in gitlab,
# we need to silence the exceptions
end
def configured?
kube_client.present? && available?
rescue Gitlab::UrlBlocker::BlockedUrlError
false
end
def generate_alert_manager_token!
unless alert_manager_token.present?
update!(alert_manager_token: generate_token)
end
end
private
def generate_token
SecureRandom.hex
end
def disable_prometheus_integration
::Clusters::Applications::DeactivateServiceWorker
.perform_async(cluster_id, ::PrometheusService.to_param) # rubocop:disable CodeReuse/ServiceClass
end
def kube_client
cluster&.kubeclient&.core_client
end
def install_knative_metrics
return [] unless cluster.application_knative_available?
[Gitlab::Kubernetes::KubectlCmd.apply_file(Clusters::Applications::Knative::METRICS_CONFIG)]
end
def delete_knative_istio_metrics
return [] unless cluster.application_knative_available?
[
Gitlab::Kubernetes::KubectlCmd.delete(
"-f", Clusters::Applications::Knative::METRICS_CONFIG,
"--ignore-not-found"
)
]
end
end
end
end
|
