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# Copyright 2017 Pablo Carranza <pcarranza@gmail.com>. All Rights Reserved.
# This file is available under the Apache license.
#
# Rails production log parsing
counter rails_requests_started_total
counter rails_requests_started by verb
counter rails_requests_completed_total
counter rails_requests_completed by status
histogram rails_requests_completed_seconds by status buckets 0.005, 0.01, 0.05, 0.1, 0.25, 0.5, 1.0, 2.5, 5.0, 15.0
/^Started (?P<verb>[A-Z]+) .*/ {
###
# Started HTTP requests by verb (GET, POST, etc.)
#
rails_requests_started_total++
rails_requests_started[$verb]++
}
/^Completed (?P<status>\d{3}) .+ in (?P<request_seconds>\d+)ms .*$/ {
###
# Total numer of completed requests by status
#
rails_requests_completed_total++
rails_requests_completed[$status]++
###
# Completed requests by status with histogram buckets
#
# These statements "fall through", so the histogram is cumulative. The
# collecting system can compute the percentile bands by taking the ratio of
# each bucket value over the final bucket.
rails_requests_completed_seconds[$status] = $request_seconds / 1000.0
}
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