62 lines
1.5 KiB
Ruby
62 lines
1.5 KiB
Ruby
# frozen_string_literal: true
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require "cgi"
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module Gitlab
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module Tracing
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class Factory
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OPENTRACING_SCHEME = "opentracing"
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def self.create_tracer(service_name, connection_string)
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return unless connection_string.present?
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begin
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opentracing_details = parse_connection_string(connection_string)
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driver_name = opentracing_details[:driver_name]
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case driver_name
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when "jaeger"
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JaegerFactory.create_tracer(service_name, opentracing_details[:options])
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else
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raise "Unknown driver: #{driver_name}"
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end
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rescue => e
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# Can't create the tracer? Warn and continue sans tracer
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warn "Unable to instantiate tracer: #{e}"
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nil
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end
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end
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def self.parse_connection_string(connection_string)
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parsed = URI.parse(connection_string)
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unless valid_uri?(parsed)
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raise "Invalid tracing connection string"
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end
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{
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driver_name: parsed.host,
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options: parse_query(parsed.query)
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}
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end
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private_class_method :parse_connection_string
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def self.parse_query(query)
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return {} unless query
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CGI.parse(query).symbolize_keys.transform_values(&:first)
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end
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private_class_method :parse_query
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def self.valid_uri?(uri)
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return false unless uri
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uri.scheme == OPENTRACING_SCHEME &&
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uri.host.to_s =~ /^[a-z0-9_]+$/ &&
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uri.path.empty?
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end
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private_class_method :valid_uri?
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end
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end
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end
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