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Contents
module ScoutApm
module Serializers
class MetricsToJsonSerializer
attr_reader :metrics
# A hash of meta => stat pairs
def initialize(metrics)
@metrics = metrics
end
def as_json
if metrics
metrics.map{|meta, stat| metric_as_json(meta, stat) }
else
nil
end
end
# Children metrics is a hash of meta=>stat pairs. Leave empty for no children.
# Supports only a single-level nesting, until we have redone metric
# classes, instead of Meta and Stats
def metric_as_json(meta, stat, child_metrics={})
{ "bucket" => meta.type,
"name" => meta.name, # No scope values needed here, since it's implied by the nesting.
"count" => stat.call_count,
"total_call_time" => stat.total_call_time,
"total_exclusive_time" => stat.total_exclusive_time,
"min_call_time" => stat.min_call_time,
"max_call_time" => stat.max_call_time,
# Pretty unsure how to synthesize histograms out of what we store now
"total_histogram" => [
[stat.total_exclusive_time / stat.call_count, stat.call_count],
],
"exclusive_histogram" => [
[stat.total_exclusive_time / stat.call_count, stat.call_count]
],
"metrics" => transform_child_metrics(child_metrics),
# Will later hold the exact SQL, or URL or whatever other detail
# about this query is necessary
"detail" => { :desc => meta.desc }.merge(meta.extra || {}),
}
end
def transform_child_metrics(metrics)
metrics.map do |meta, stat|
metric_as_json(meta, stat)
end
end
end
end
end
Version data entries
149 entries across 149 versions & 1 rubygems