41 lines
1.1 KiB
Ruby
41 lines
1.1 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module Metrics
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# Rack middleware for tracking Elasticsearch metrics from Grape and Web requests.
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class ElasticsearchRackMiddleware
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HISTOGRAM_BUCKETS = [0.1, 0.5, 1, 10, 50].freeze
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def initialize(app)
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@app = app
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end
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def call(env)
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transaction = Gitlab::Metrics.current_transaction
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@app.call(env)
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ensure
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record_metrics(transaction)
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end
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private
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def record_metrics(transaction)
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query_time = ::Gitlab::Instrumentation::ElasticsearchTransport.query_time
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request_count = ::Gitlab::Instrumentation::ElasticsearchTransport.get_request_count
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return unless request_count > 0
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transaction.increment(:http_elasticsearch_requests_total, request_count) do
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docstring 'Amount of calls to Elasticsearch servers during web requests'
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end
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transaction.observe(:http_elasticsearch_requests_duration_seconds, query_time) do
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docstring 'Query time for Elasticsearch servers during web requests'
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buckets HISTOGRAM_BUCKETS
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end
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end
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end
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end
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end
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