32 lines
830 B
Ruby
32 lines
830 B
Ruby
# frozen_string_literal: true
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module Gitlab
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module Graphql
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module Tracers
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# This graphql-ruby tracer records duration for trace events and merges
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# the duration into the trace event's metadata. This way, separate tracers
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# can all use the same duration information.
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#
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# NOTE: TimerTracer should be applied last **after** other tracers, so
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# that it runs first (similar to function composition)
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class TimerTracer
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def self.use(schema)
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schema.tracer(self.new)
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end
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def trace(key, data)
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start_time = Gitlab::Metrics::System.monotonic_time
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result = yield
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duration_s = Gitlab::Metrics::System.monotonic_time - start_time
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data[:duration_s] = duration_s
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result
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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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