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author | Kamil Trzciński <ayufan@ayufan.eu> | 2017-03-07 16:57:42 +0000 |
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committer | Rémy Coutable <remy@rymai.me> | 2017-03-07 16:57:42 +0000 |
commit | 55f2a5debcf10a4d3ca1d0e53fe06f38bc0b77a9 (patch) | |
tree | 6ebbdf0f12c5e0d30a3e806284c361b8764d9ccf /lib | |
parent | a5db7f54252d22e3ecd49786a3fdff7c46658fa3 (diff) | |
download | gitlab-ce-55f2a5debcf10a4d3ca1d0e53fe06f38bc0b77a9.tar.gz |
Added Prometheus Service and Prometheus graphs
Diffstat (limited to 'lib')
-rw-r--r-- | lib/api/services.rb | 9 | ||||
-rw-r--r-- | lib/gitlab/prometheus.rb | 70 |
2 files changed, 79 insertions, 0 deletions
diff --git a/lib/api/services.rb b/lib/api/services.rb index 1cf29d9a1a3..5aa2f5eba7b 100644 --- a/lib/api/services.rb +++ b/lib/api/services.rb @@ -422,6 +422,14 @@ module API desc: 'Comma-separated list of branches which will be automatically inspected. Leave blank to include all branches.' } ], + 'prometheus' => [ + { + required: true, + name: :api_url, + type: String, + desc: 'Prometheus API Base URL, like http://prometheus.example.com/' + } + ], 'pushover' => [ { required: true, @@ -558,6 +566,7 @@ module API SlackSlashCommandsService, PipelinesEmailService, PivotaltrackerService, + PrometheusService, PushoverService, RedmineService, SlackService, diff --git a/lib/gitlab/prometheus.rb b/lib/gitlab/prometheus.rb new file mode 100644 index 00000000000..62239779454 --- /dev/null +++ b/lib/gitlab/prometheus.rb @@ -0,0 +1,70 @@ +module Gitlab + PrometheusError = Class.new(StandardError) + + # Helper methods to interact with Prometheus network services & resources + class Prometheus + attr_reader :api_url + + def initialize(api_url:) + @api_url = api_url + end + + def ping + json_api_get('query', query: '1') + end + + def query(query) + get_result('vector') do + json_api_get('query', query: query) + end + end + + def query_range(query, start: 8.hours.ago) + get_result('matrix') do + json_api_get('query_range', + query: query, + start: start.to_f, + end: Time.now.utc.to_f, + step: 1.minute.to_i) + end + end + + private + + def json_api_get(type, args = {}) + get(join_api_url(type, args)) + rescue Errno::ECONNREFUSED + raise PrometheusError, 'Connection refused' + end + + def join_api_url(type, args = {}) + url = URI.parse(api_url) + rescue URI::Error + raise PrometheusError, "Invalid API URL: #{api_url}" + else + url.path = [url.path.sub(%r{/+\z}, ''), 'api', 'v1', type].join('/') + url.query = args.to_query + + url.to_s + end + + def get(url) + handle_response(HTTParty.get(url)) + end + + def handle_response(response) + if response.code == 200 && response['status'] == 'success' + response['data'] || {} + elsif response.code == 400 + raise PrometheusError, response['error'] || 'Bad data received' + else + raise PrometheusError, "#{response.code} - #{response.body}" + end + end + + def get_result(expected_type) + data = yield + data['result'] if data['resultType'] == expected_type + end + end +end |