Method status
has a Cognitive Complexity of 19 (exceeds 5 allowed). Consider refactoring. Open
def status
routes_count = if @ems.present?
@ems.respond_to?(:container_routes) ? @ems.container_routes.count : 0 # ems might not have routes
else
ContainerRoute.count
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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
Class ContainerDashboardService
has 23 methods (exceeds 20 allowed). Consider refactoring. Open
class ContainerDashboardService < DashboardService
include ContainerServiceMixin
include Mixins::CheckedIdMixin
include TextualMixins::TextualRefreshStatus
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Method heatmaps_data
has a Cognitive Complexity of 18 (exceeds 5 allowed). Consider refactoring. Open
def heatmaps_data(metrics)
node_cpu_usage = []
node_memory_usage = []
metrics.each do |m|
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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
Method status
has 55 lines of code (exceeds 25 allowed). Consider refactoring. Open
def status
routes_count = if @ems.present?
@ems.respond_to?(:container_routes) ? @ems.container_routes.count : 0 # ems might not have routes
else
ContainerRoute.count
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Method heatmaps_data
has 27 lines of code (exceeds 25 allowed). Consider refactoring. Open
def heatmaps_data(metrics)
node_cpu_usage = []
node_memory_usage = []
metrics.each do |m|
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Similar blocks of code found in 4 locations. Consider refactoring. Open
def hourly_image_metrics
hourly_image_metrics = Hash.new(0)
hourly_metrics.each do |m|
hour = m.timestamp.beginning_of_hour.utc
if m.stat_container_image_registration_rate.present?
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Duplicated Code
Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:
Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.
When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).
Tuning
This issue has a mass of 39.
We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.
The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.
If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.
See codeclimate-duplication
's documentation for more information about tuning the mass threshold in your .codeclimate.yml
.
Refactorings
- Extract Method
- Extract Class
- Form Template Method
- Introduce Null Object
- Pull Up Method
- Pull Up Field
- Substitute Algorithm
Further Reading
- Don't Repeat Yourself on the C2 Wiki
- Duplicated Code on SourceMaking
- Refactoring: Improving the Design of Existing Code by Martin Fowler. Duplicated Code, p76
Similar blocks of code found in 4 locations. Consider refactoring. Open
def daily_image_metrics
daily_image_metrics = Hash.new(0)
daily_metrics.each do |m|
day = m.timestamp.beginning_of_day.utc
daily_image_metrics[day] += m.stat_container_image_registration_rate if m.stat_container_image_registration_rate.present?
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Duplicated Code
Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:
Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.
When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).
Tuning
This issue has a mass of 39.
We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.
The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.
If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.
See codeclimate-duplication
's documentation for more information about tuning the mass threshold in your .codeclimate.yml
.
Refactorings
- Extract Method
- Extract Class
- Form Template Method
- Introduce Null Object
- Pull Up Method
- Pull Up Field
- Substitute Algorithm
Further Reading
- Don't Repeat Yourself on the C2 Wiki
- Duplicated Code on SourceMaking
- Refactoring: Improving the Design of Existing Code by Martin Fowler. Duplicated Code, p76
Call super
to initialize state of the parent class. Open
def initialize(provider_id, controller)
@provider_id = provider_id
@ems = find_record_with_rbac(ManageIQ::Providers::ContainerManager, @provider_id) if @provider_id.present?
@resource = @ems || ManageIQ::Providers::ContainerManager.all
@controller = controller
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- Exclude checks
Checks for the presence of constructors and lifecycle callbacks
without calls to super
.
This cop does not consider method_missing
(and respond_to_missing?
)
because in some cases it makes sense to overtake what is considered a
missing method. In other cases, the theoretical ideal handling could be
challenging or verbose for no actual gain.
Autocorrection is not supported because the position of super
cannot be
determined automatically.
Object
and BasicObject
are allowed by this cop because of their
stateless nature. However, sometimes you might want to allow other parent
classes from this cop, for example in the case of an abstract class that is
not meant to be called with super
. In those cases, you can use the
AllowedParentClasses
option to specify which classes should be allowed
in addition to Object
and BasicObject
.
Example:
# bad
class Employee < Person
def initialize(name, salary)
@salary = salary
end
end
# good
class Employee < Person
def initialize(name, salary)
super(name)
@salary = salary
end
end
# bad
Employee = Class.new(Person) do
def initialize(name, salary)
@salary = salary
end
end
# good
Employee = Class.new(Person) do
def initialize(name, salary)
super(name)
@salary = salary
end
end
# bad
class Parent
def self.inherited(base)
do_something
end
end
# good
class Parent
def self.inherited(base)
super
do_something
end
end
# good
class ClassWithNoParent
def initialize
do_something
end
end
Example: AllowedParentClasses: [MyAbstractClass]
# good
class MyConcreteClass < MyAbstractClass
def initialize
do_something
end
end