d345591fc8
GitLab Performance Monitoring is now able to track custom events not directly related to application performance. These events include the number of tags pushed, repositories created, builds registered, etc. The use of these events is to get a better overview of how a GitLab instance is used and how that may affect performance. For example, a large number of Git pushes may have a negative impact on the underlying storage engine. Events are stored in the "events" measurement and are not prefixed with "rails_" or "sidekiq_", this makes it easier to query events with the same name triggered from different parts of the application. All events being stored in the same measurement also makes it easier to downsample data. Currently the following events are tracked: * Creating repositories * Removing repositories * Changing the default branch of a repository * Pushing a new tag * Removing an existing tag * Pushing a commit (along with the branch being pushed to) * Pushing a new branch * Removing an existing branch * Importing a repository (along with the URL we're importing) * Forking a repository (along with the source/target path) * CI builds registered (and when no build could be found) * CI builds being updated * Rails and Sidekiq exceptions Fixes gitlab-org/gitlab-ce#13720
130 lines
3 KiB
Ruby
130 lines
3 KiB
Ruby
module Gitlab
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module Metrics
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# Class for storing metrics information of a single transaction.
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class Transaction
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THREAD_KEY = :_gitlab_metrics_transaction
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# The series to store events (e.g. Git pushes) in.
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EVENT_SERIES = 'events'
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attr_reader :tags, :values, :method, :metrics
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attr_accessor :action
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def self.current
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Thread.current[THREAD_KEY]
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end
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# action - A String describing the action performed, usually the class
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# plus method name.
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def initialize(action = nil)
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@metrics = []
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@methods = {}
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@started_at = nil
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@finished_at = nil
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@values = Hash.new(0)
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@tags = {}
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@action = action
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@memory_before = 0
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@memory_after = 0
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end
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def duration
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@finished_at ? (@finished_at - @started_at) : 0.0
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end
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def allocated_memory
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@memory_after - @memory_before
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end
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def run
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Thread.current[THREAD_KEY] = self
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@memory_before = System.memory_usage
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@started_at = System.monotonic_time
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yield
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ensure
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@memory_after = System.memory_usage
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@finished_at = System.monotonic_time
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Thread.current[THREAD_KEY] = nil
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end
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def add_metric(series, values, tags = {})
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@metrics << Metric.new("#{Metrics.series_prefix}#{series}", values, tags)
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end
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# Tracks a business level event
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#
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# Business level events including events such as Git pushes, Emails being
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# sent, etc.
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#
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# event_name - The name of the event (e.g. "git_push").
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# tags - A set of tags to attach to the event.
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def add_event(event_name, tags = {})
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@metrics << Metric.new(EVENT_SERIES,
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{ count: 1 },
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{ event: event_name }.merge(tags),
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:event)
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end
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# Returns a MethodCall object for the given name.
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def method_call_for(name)
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unless method = @methods[name]
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@methods[name] = method = MethodCall.new(name, Instrumentation.series)
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end
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method
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end
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def increment(name, value)
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@values[name] += value
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end
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def set(name, value)
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@values[name] = value
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end
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def add_tag(key, value)
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@tags[key] = value
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end
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def finish
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track_self
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submit
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end
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def track_self
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values = { duration: duration, allocated_memory: allocated_memory }
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@values.each do |name, value|
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values[name] = value
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end
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add_metric('transactions', values, @tags)
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end
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def submit
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submit = @metrics.dup
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@methods.each do |name, method|
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submit << method.to_metric if method.above_threshold?
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end
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submit_hashes = submit.map do |metric|
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hash = metric.to_hash
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hash[:tags][:action] ||= @action if @action && !metric.event?
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hash
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end
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Metrics.submit_metrics(submit_hashes)
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end
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end
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end
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end
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