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Contents
module ScoutApm
module Utils
class ActiveRecordMetricName
DEFAULT_METRIC = "SQL/Unknown"
attr_reader :sql, :name
def initialize(sql, name)
@sql = sql
@name = name.to_s
end
# Converts an SQL string and the name (typically assigned automatically
# by rails) into a Scout metric_name.
#
# sql: SELECT "places".* FROM "places" ORDER BY "places"."position" ASC
# name: Place Load
# metric_name: Place/find
def to_s
return DEFAULT_METRIC unless name
return DEFAULT_METRIC unless model && operation
if parsed = parse_operation
"#{model}/#{parsed}"
else
"SQL/other"
end
end
# For the layer lookup.
def hash
h = name.downcase.hash
h
end
# For the layer lookup.
# Reminder: #eql? is for Hash equality: returns true if obj and other refer to the same hash key.
def eql?(o)
self.class == o.class &&
name.downcase == o.name.downcase
end
alias_method :==, :eql?
private
def model
parts.first
end
def operation
if parts.length >= 2
parts[1].downcase
end
end
def parts
name.split(" ")
end
# Returns nil if no match
# Returns nil if the operation wasn't under developer control (and hence isn't interesting to report)
def parse_operation
case operation
when 'indexes', 'columns' then nil # not under developer control
when 'load' then 'find'
when 'destroy', 'find', 'save', 'create', 'exists' then operation
when 'update' then 'save'
else
if model == 'Join'
operation
end
end
end
end
end
end
Version data entries
56 entries across 56 versions & 1 rubygems