ManageIQ/manageiq

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app/models/miq_server/role_management.rb

Summary

Maintainability
C
7 hrs
Test Coverage

Method synchronize_active_roles has a Cognitive Complexity of 41 (exceeds 11 allowed). Consider refactoring.
Open

  def synchronize_active_roles(servers, roles_to_sync)
    current = Hash.new { |h, k| h[k] = {:active => [], :inactive => []} }
    servers.each do |s|
      s.assigned_server_roles.each do |a|
        next unless roles_to_sync.include?(a.server_role)
Severity: Minor
Found in app/models/miq_server/role_management.rb - About 5 hrs to fix

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 synchronize_active_roles is too high. [13/11]
Open

  def synchronize_active_roles(servers, roles_to_sync)
    current = Hash.new { |h, k| h[k] = {:active => [], :inactive => []} }
    servers.each do |s|
      s.assigned_server_roles.each do |a|
        next unless roles_to_sync.include?(a.server_role)

This cop 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.

Method server_role_names= has a Cognitive Complexity of 18 (exceeds 11 allowed). Consider refactoring.
Open

  def server_role_names=(roles)
    zone.lock do
      if roles.blank?
        server_roles.delete_all
      else
Severity: Minor
Found in app/models/miq_server/role_management.rb - About 1 hr to fix

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

Method set_role_activation has a Cognitive Complexity of 14 (exceeds 11 allowed). Consider refactoring.
Open

  def set_role_activation(active, *roles)
    roles = roles.first if roles.length == 1 && roles[0].kind_of?(Array)
    return if roles.empty?

    ids = roles == ["*"] ? server_roles.pluck(:id) : ServerRole.where(:name => roles).pluck(:id)
Severity: Minor
Found in app/models/miq_server/role_management.rb - About 45 mins to fix

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

Variable roles used in void context.
Open

    roles

This cop checks for operators, variables, literals, and nonmutating methods used in void context.

Example: CheckForMethodsWithNoSideEffects: false (default)

# bad
def some_method
  some_num * 10
  do_something
end

def some_method(some_var)
  some_var
  do_something
end

Example: CheckForMethodsWithNoSideEffects: true

# bad
def some_method(some_array)
  some_array.sort
  do_something(some_array)
end

# good
def some_method
  do_something
  some_num * 10
end

def some_method(some_var)
  do_something
  some_var
end

def some_method(some_array)
  some_array.sort!
  do_something(some_array)
end

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