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# frozen_string_literal: true
module Gitlab
module InstrumentationHelper
extend self
DURATION_PRECISION = 6 # microseconds
def init_instrumentation_data(request_ip: nil)
# Set `request_start_time` only if this is request
# This is done, as `request_start_time` imply `request_deadline`
if request_ip
Gitlab::RequestContext.instance.client_ip = request_ip
Gitlab::RequestContext.instance.request_start_time = Gitlab::Metrics::System.real_time
end
Gitlab::RequestContext.instance.start_thread_cpu_time = Gitlab::Metrics::System.thread_cpu_time
Gitlab::RequestContext.instance.thread_memory_allocations = Gitlab::Memory::Instrumentation.start_thread_memory_allocations
end
def add_instrumentation_data(payload)
instrument_gitaly(payload)
instrument_rugged(payload)
instrument_redis(payload)
instrument_elasticsearch(payload)
instrument_throttle(payload)
instrument_active_record(payload)
instrument_external_http(payload)
instrument_rack_attack(payload)
instrument_cpu(payload)
instrument_thread_memory_allocations(payload)
instrument_load_balancing(payload)
instrument_pid(payload)
instrument_uploads(payload)
end
def instrument_gitaly(payload)
gitaly_calls = Gitlab::GitalyClient.get_request_count
return if gitaly_calls == 0
payload[:gitaly_calls] = gitaly_calls
payload[:gitaly_duration_s] = Gitlab::GitalyClient.query_time
end
def instrument_rugged(payload)
rugged_calls = Gitlab::RuggedInstrumentation.query_count
return if rugged_calls == 0
payload[:rugged_calls] = rugged_calls
payload[:rugged_duration_s] = Gitlab::RuggedInstrumentation.query_time
end
def instrument_redis(payload)
payload.merge! ::Gitlab::Instrumentation::Redis.payload
end
def instrument_elasticsearch(payload)
# Elasticsearch integration is only available in EE but instrumentation
# only depends on the Gem which is also available in FOSS.
elasticsearch_calls = Gitlab::Instrumentation::ElasticsearchTransport.get_request_count
return if elasticsearch_calls == 0
payload[:elasticsearch_calls] = elasticsearch_calls
payload[:elasticsearch_duration_s] = Gitlab::Instrumentation::ElasticsearchTransport.query_time
payload[:elasticsearch_timed_out_count] = Gitlab::Instrumentation::ElasticsearchTransport.get_timed_out_count
end
def instrument_external_http(payload)
external_http_count = Gitlab::Metrics::Subscribers::ExternalHttp.request_count
return if external_http_count == 0
payload.merge! Gitlab::Metrics::Subscribers::ExternalHttp.payload
end
def instrument_throttle(payload)
safelist = Gitlab::Instrumentation::Throttle.safelist
payload[:throttle_safelist] = safelist if safelist.present?
end
def instrument_active_record(payload)
db_counters = ::Gitlab::Metrics::Subscribers::ActiveRecord.db_counter_payload
payload.merge!(db_counters)
end
def instrument_rack_attack(payload)
rack_attack_redis_count = ::Gitlab::Metrics::Subscribers::RackAttack.payload[:rack_attack_redis_count]
return if rack_attack_redis_count == 0
payload.merge!(::Gitlab::Metrics::Subscribers::RackAttack.payload)
end
def instrument_cpu(payload)
cpu_s = ::Gitlab::Metrics::System.thread_cpu_duration(
::Gitlab::RequestContext.instance.start_thread_cpu_time)
payload[:cpu_s] = cpu_s.round(DURATION_PRECISION) if cpu_s
end
def instrument_pid(payload)
payload[:pid] = Process.pid
end
def instrument_thread_memory_allocations(payload)
counters = ::Gitlab::Memory::Instrumentation.measure_thread_memory_allocations(
::Gitlab::RequestContext.instance.thread_memory_allocations)
payload.merge!(counters) if counters
end
def instrument_load_balancing(payload)
load_balancing_payload = ::Gitlab::Metrics::Subscribers::LoadBalancing.load_balancing_payload
payload.merge!(load_balancing_payload)
end
def instrument_uploads(payload)
payload.merge! ::Gitlab::Instrumentation::Uploads.payload
end
# Returns the queuing duration for a Sidekiq job in seconds, as a float, if the
# `enqueued_at` field or `created_at` field is available.
#
# * If the job doesn't contain sufficient information, returns nil
# * If the job has a start time in the future, returns 0
# * If the job contains an invalid start time value, returns nil
# @param [Hash] job a Sidekiq job, represented as a hash
def self.queue_duration_for_job(job)
# Old gitlab-shell messages don't provide enqueued_at/created_at attributes
enqueued_at = job['enqueued_at'] || job['created_at']
return unless enqueued_at
enqueued_at_time = convert_to_time(enqueued_at)
return unless enqueued_at_time
round_elapsed_time(enqueued_at_time)
end
# Returns the time it took for a scheduled job to be enqueued in seconds, as a float,
# if the `scheduled_at` and `enqueued_at` fields are available.
#
# * If the job doesn't contain sufficient information, returns nil
# * If the job has a start time in the future, returns 0
# * If the job contains an invalid start time value, returns nil
# @param [Hash] job a Sidekiq job, represented as a hash
def self.enqueue_latency_for_scheduled_job(job)
scheduled_at = job['scheduled_at']
enqueued_at = job['enqueued_at']
return unless scheduled_at && enqueued_at
scheduled_at_time = convert_to_time(scheduled_at)
enqueued_at_time = convert_to_time(enqueued_at)
return unless scheduled_at_time && enqueued_at_time
round_elapsed_time(scheduled_at_time, enqueued_at_time)
end
def self.round_elapsed_time(start, end_time = Time.now)
# It's possible that if there is clock-skew between two nodes this
# value may be less than zero. In that event, we record the value
# as zero.
[elapsed_by_absolute_time(start, end_time), 0].max.round(DURATION_PRECISION)
end
# Calculates the time in seconds, as a float, from
# the provided start time until now
#
# @param [Time] start
def self.elapsed_by_absolute_time(start, end_time)
(end_time - start).to_f.round(DURATION_PRECISION)
end
private_class_method :elapsed_by_absolute_time
# Convert a representation of a time into a `Time` value
#
# @param time_value String, Float time representation, or nil
def self.convert_to_time(time_value)
return time_value if time_value.is_a?(Time)
return Time.iso8601(time_value) if time_value.is_a?(String)
return Time.at(time_value) if time_value.is_a?(Numeric) && time_value > 0
rescue ArgumentError
# Swallow invalid dates. Better to loose some observability
# than bring all background processing down because of a date
# formatting bug in a client
end
private_class_method :convert_to_time
end
end
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