84 lines
2.4 KiB
Ruby
84 lines
2.4 KiB
Ruby
module Gitlab
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module Metrics
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# Class for tracking timing information about method calls
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class MethodCall
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BASE_LABELS = { module: nil, method: nil }.freeze
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attr_reader :real_time, :cpu_time, :call_count
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def self.call_real_duration_histogram
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@call_real_duration_histogram ||= Gitlab::Metrics.histogram(
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:gitlab_method_call_real_duration_seconds,
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'Method calls real duration',
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Transaction::BASE_LABELS.merge(BASE_LABELS),
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[0.1, 0.2, 0.5, 1, 2, 5, 10]
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)
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end
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def self.call_cpu_duration_histogram
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@call_duration_histogram ||= Gitlab::Metrics.histogram(
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:gitlab_method_call_cpu_duration_seconds,
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'Method calls cpu duration',
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Transaction::BASE_LABELS.merge(BASE_LABELS),
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[0.1, 0.2, 0.5, 1, 2, 5, 10]
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)
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end
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# name - The full name of the method (including namespace) such as
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# `User#sign_in`.
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#
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def initialize(name, module_name, method_name, transaction)
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@module_name = module_name
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@method_name = method_name
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@transaction = transaction
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@name = name
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@real_time = 0
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@cpu_time = 0
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@call_count = 0
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end
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# Measures the real and CPU execution time of the supplied block.
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def measure
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start_real = System.monotonic_time
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start_cpu = System.cpu_time
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retval = yield
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real_time = System.monotonic_time - start_real
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cpu_time = System.cpu_time - start_cpu
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@real_time += real_time
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@cpu_time += System.cpu_time - start_cpu
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@call_count += 1
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self.class.call_real_duration_histogram.observe(@transaction.labels.merge(labels), real_time / 1000.0)
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self.class.call_cpu_duration_histogram.observe(@transaction.labels.merge(labels), cpu_time / 1000.0)
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retval
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end
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def labels
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@labels ||= { module: @module_name, method: @method_name }
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end
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# Returns a Metric instance of the current method call.
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def to_metric
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Metric.new(
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Instrumentation.series,
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{
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duration: real_time,
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cpu_duration: cpu_time,
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call_count: call_count
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},
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method: @name
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)
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end
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# Returns true if the total runtime of this method exceeds the method call
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# threshold.
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def above_threshold?
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real_time >= Metrics.method_call_threshold
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end
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end
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end
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end
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