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Contents
module Datadog
module Contrib
module Redis
# Quantize contains Redis-specific resource quantization tools.
module Quantize
PLACEHOLDER = '?'.freeze
TOO_LONG_MARK = '...'.freeze
VALUE_MAX_LEN = 50
CMD_MAX_LEN = 500
module_function
def format_arg(arg)
str = arg.is_a?(Symbol) ? arg.to_s.upcase : arg.to_s
str = Utils.utf8_encode(str, binary: true, placeholder: PLACEHOLDER)
Utils.truncate(str, VALUE_MAX_LEN, TOO_LONG_MARK)
rescue => e
Datadog::Logger.log.debug("non formattable Redis arg #{str}: #{e}")
PLACEHOLDER
end
def format_command_args(command_args)
command_args = resolve_command_args(command_args)
return 'AUTH ?' if auth_command?(command_args)
cmd = command_args.map { |x| format_arg(x) }.join(' ')
Utils.truncate(cmd, CMD_MAX_LEN, TOO_LONG_MARK)
end
def auth_command?(command_args)
return false unless command_args.is_a?(Array) && !command_args.empty?
command_args.first.to_sym == :auth
end
# Unwraps command array when Redis is called with the following syntax:
# redis.call([:cmd, 'arg1', ...])
def resolve_command_args(command_args)
return command_args.first if command_args.is_a?(Array) && command_args.first.is_a?(Array)
command_args
end
private_class_method :auth_command?, :resolve_command_args
end
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems