Method check_roles_changed
has a Cognitive Complexity of 37 (exceeds 11 allowed). Consider refactoring. Open
def check_roles_changed
added = @active_roles - @current_roles
removed = @current_roles - @active_roles
if BRUTE_FORCE
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Cognitive Complexity
Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.
A method's cognitive complexity is based on a few simple rules:
- Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
- Code is considered more complex for each "break in the linear flow of the code"
- Code is considered more complex when "flow breaking structures are nested"
Further reading
Cyclomatic complexity for check_roles_changed is too high. [18/11] Open
def check_roles_changed
added = @active_roles - @current_roles
removed = @current_roles - @active_roles
if BRUTE_FORCE
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- Exclude checks
Checks that the cyclomatic complexity of methods is not higher than the configured maximum. The cyclomatic complexity is the number of linearly independent paths through a method. The algorithm counts decision points and adds one.
An if statement (or unless or ?:) increases the complexity by one. An else branch does not, since it doesn't add a decision point. The && operator (or keyword and) can be converted to a nested if statement, and ||/or is shorthand for a sequence of ifs, so they also add one. Loops can be said to have an exit condition, so they add one. Blocks that are calls to builtin iteration methods (e.g. `ary.map{...}) also add one, others are ignored.
def each_child_node(*types) # count begins: 1
unless block_given? # unless: +1
return to_enum(__method__, *types)
children.each do |child| # each{}: +1
next unless child.is_a?(Node) # unless: +1
yield child if types.empty? || # if: +1, ||: +1
types.include?(child.type)
end
self
end # total: 6
Avoid more than 3 levels of block nesting. Open
if j.tags.any? { |t| t.to_s.starts_with?("miq_schedules_") }
_log.info("Removing user schedule with Tags: #{j.tags.inspect}")
end
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- Exclude checks
Checks for excessive nesting of conditional and looping constructs.
You can configure if blocks are considered using the CountBlocks
option. When set to false
(the default) blocks are not counted
towards the nesting level. Set to true
to count blocks as well.
The maximum level of nesting allowed is configurable.
Avoid rescuing the Exception
class. Perhaps you meant to rescue StandardError
? Open
rescue Exception => err
msg = "Error adjusting schedules: #{err.message}"
_log.error(msg)
_log.log_backtrace(err)
do_exit("#{msg}. Restarting.", 1)
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- Exclude checks
Checks for rescue
blocks targeting the Exception class.
Example:
# bad
begin
do_something
rescue Exception
handle_exception
end
Example:
# good
begin
do_something
rescue ArgumentError
handle_exception
end
Avoid rescuing the Exception
class. Perhaps you meant to rescue StandardError
? Open
rescue Exception => err
_log.error(err.message)
_log.log_backtrace(err)
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- Exclude checks
Checks for rescue
blocks targeting the Exception class.
Example:
# bad
begin
do_something
rescue Exception
handle_exception
end
Example:
# good
begin
do_something
rescue ArgumentError
handle_exception
end