102 lines
2.8 KiB
Ruby
102 lines
2.8 KiB
Ruby
class PrometheusService < MonitoringService
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include ReactiveService
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self.reactive_cache_lease_timeout = 30.seconds
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self.reactive_cache_refresh_interval = 30.seconds
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self.reactive_cache_lifetime = 1.minute
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# Access to prometheus is directly through the API
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prop_accessor :api_url
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with_options presence: true, if: :activated? do
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validates :api_url, url: true
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end
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after_save :clear_reactive_cache!
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def initialize_properties
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if properties.nil?
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self.properties = {}
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end
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end
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def title
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'Prometheus'
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end
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def description
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'Prometheus monitoring'
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end
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def self.to_param
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'prometheus'
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end
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def fields
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[
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{
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type: 'text',
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name: 'api_url',
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title: 'API URL',
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placeholder: 'Prometheus API Base URL, like http://prometheus.example.com/',
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help: 'By default, Prometheus listens on ‘http://localhost:9090’. It’s not recommended to change the default address and port as this might affect or conflict with other services running on the GitLab server.',
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required: true
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}
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]
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end
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# Check we can connect to the Prometheus API
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def test(*args)
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client.ping
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{ success: true, result: 'Checked API endpoint' }
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rescue Gitlab::PrometheusError => err
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{ success: false, result: err }
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end
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def environment_metrics(environment)
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with_reactive_cache(Gitlab::Prometheus::Queries::EnvironmentQuery.name, environment.id, &method(:rename_data_to_metrics))
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end
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def deployment_metrics(deployment)
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metrics = with_reactive_cache(Gitlab::Prometheus::Queries::DeploymentQuery.name, deployment.id, &method(:rename_data_to_metrics))
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metrics&.merge(deployment_time: deployment.created_at.to_i) || {}
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end
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def additional_environment_metrics(environment)
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with_reactive_cache(Gitlab::Prometheus::Queries::AdditionalMetricsEnvironmentQuery.name, environment.id, &:itself)
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end
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def additional_deployment_metrics(deployment)
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with_reactive_cache(Gitlab::Prometheus::Queries::AdditionalMetricsDeploymentQuery.name, deployment.id, &:itself)
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end
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def matched_metrics
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with_reactive_cache(Gitlab::Prometheus::Queries::MatchedMetricsQuery.name, &:itself)
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end
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# Cache metrics for specific environment
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def calculate_reactive_cache(query_class_name, *args)
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return unless active? && project && !project.pending_delete?
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data = Kernel.const_get(query_class_name).new(client).query(*args)
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{
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success: true,
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data: data,
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last_update: Time.now.utc
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}
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rescue Gitlab::PrometheusError => err
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{ success: false, result: err.message }
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end
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def client
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@prometheus ||= Gitlab::PrometheusClient.new(api_url: api_url)
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end
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private
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def rename_data_to_metrics(metrics)
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metrics[:metrics] = metrics.delete :data
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metrics
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end
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end
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