80 lines
2.4 KiB
Ruby
80 lines
2.4 KiB
Ruby
# frozen_string_literal: true
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module Grafana
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class Client
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Error = Class.new(StandardError)
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# @param api_url [String] Base URL of the Grafana instance
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# @param token [String] Admin-level API token for instance
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def initialize(api_url:, token:)
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@api_url = api_url
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@token = token
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end
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# @param uid [String] Unique identifier for a Grafana dashboard
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def get_dashboard(uid:)
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http_get("#{@api_url}/api/dashboards/uid/#{uid}")
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end
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# @param name [String] Unique identifier for a Grafana datasource
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def get_datasource(name:)
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# CGI#escape formats strings such that the Grafana endpoint
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# will not recognize the dashboard name. Preferring URI#escape.
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http_get("#{@api_url}/api/datasources/name/#{URI.escape(name)}") # rubocop:disable Lint/UriEscapeUnescape
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end
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# @param datasource_id [String] Grafana ID for the datasource
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# @param proxy_path [String] Path to proxy - ex) 'api/v1/query_range'
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def proxy_datasource(datasource_id:, proxy_path:, query: {})
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http_get("#{@api_url}/api/datasources/proxy/#{datasource_id}/#{proxy_path}", query: query)
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end
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private
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def http_get(url, params = {})
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response = handle_request_exceptions do
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Gitlab::HTTP.get(url, **request_params.merge(params))
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end
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handle_response(response)
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end
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def request_params
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{
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headers: {
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'Authorization' => "Bearer #{@token}",
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'Accept' => 'application/json',
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'Content-Type' => 'application/json'
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},
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follow_redirects: false
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}
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end
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def handle_request_exceptions
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yield
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rescue Gitlab::HTTP::Error
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raise_error 'Error when connecting to Grafana'
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rescue Net::OpenTimeout
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raise_error 'Connection to Grafana timed out'
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rescue SocketError
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raise_error 'Received SocketError when trying to connect to Grafana'
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rescue OpenSSL::SSL::SSLError
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raise_error 'Grafana returned invalid SSL data'
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rescue Errno::ECONNREFUSED
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raise_error 'Connection refused'
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rescue => e
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raise_error "Grafana request failed due to #{e.class}"
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end
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def handle_response(response)
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return response if response.code == 200
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raise_error "Grafana response status code: #{response.code}, Message: #{response.body}"
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end
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def raise_error(message)
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raise Client::Error, message
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end
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end
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end
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