dotcloud/docker

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daemon/cluster/executor/container/controller.go

Summary

Maintainability
D
1 day
Test Coverage

Method controller.Start has a Cognitive Complexity of 39 (exceeds 20 allowed). Consider refactoring.
Open

func (r *controller) Start(ctx context.Context) error {
    if err := r.checkClosed(); err != nil {
        return err
    }

Severity: Minor
Found in daemon/cluster/executor/container/controller.go - About 3 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

File controller.go has 516 lines of code (exceeds 500 allowed). Consider refactoring.
Open

package container // import "github.com/docker/docker/daemon/cluster/executor/container"

import (
    "context"
    "fmt"
Severity: Minor
Found in daemon/cluster/executor/container/controller.go - About 2 hrs to fix

    Method controller.Start has 67 lines of code (exceeds 50 allowed). Consider refactoring.
    Open

    func (r *controller) Start(ctx context.Context) error {
        if err := r.checkClosed(); err != nil {
            return err
        }
    
    
    Severity: Minor
    Found in daemon/cluster/executor/container/controller.go - About 1 hr to fix

      Method controller.Start has 15 return statements (exceeds 4 allowed).
      Open

      func (r *controller) Start(ctx context.Context) error {
          if err := r.checkClosed(); err != nil {
              return err
          }
      
      
      Severity: Major
      Found in daemon/cluster/executor/container/controller.go - About 1 hr to fix

        Method controller.Logs has 60 lines of code (exceeds 50 allowed). Consider refactoring.
        Open

        func (r *controller) Logs(ctx context.Context, publisher exec.LogPublisher, options api.LogSubscriptionOptions) error {
            if err := r.checkClosed(); err != nil {
                return err
            }
        
        
        Severity: Minor
        Found in daemon/cluster/executor/container/controller.go - About 1 hr to fix

          Method controller.Prepare has 10 return statements (exceeds 4 allowed).
          Open

          func (r *controller) Prepare(ctx context.Context) error {
              if err := r.checkClosed(); err != nil {
                  return err
              }
          
          
          Severity: Major
          Found in daemon/cluster/executor/container/controller.go - About 1 hr to fix

            Method controller.Logs has a Cognitive Complexity of 24 (exceeds 20 allowed). Consider refactoring.
            Open

            func (r *controller) Logs(ctx context.Context, publisher exec.LogPublisher, options api.LogSubscriptionOptions) error {
                if err := r.checkClosed(); err != nil {
                    return err
                }
            
            
            Severity: Minor
            Found in daemon/cluster/executor/container/controller.go - About 55 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

            Method controller.Logs has 8 return statements (exceeds 4 allowed).
            Open

            func (r *controller) Logs(ctx context.Context, publisher exec.LogPublisher, options api.LogSubscriptionOptions) error {
                if err := r.checkClosed(); err != nil {
                    return err
                }
            
            
            Severity: Major
            Found in daemon/cluster/executor/container/controller.go - About 50 mins to fix

              Function newController has 6 arguments (exceeds 4 allowed). Consider refactoring.
              Open

              func newController(b executorpkg.Backend, i executorpkg.ImageBackend, v executorpkg.VolumeBackend, task *api.Task, node *api.NodeDescription, dependencies exec.DependencyGetter) (*controller, error) {
              Severity: Minor
              Found in daemon/cluster/executor/container/controller.go - About 45 mins to fix

                Avoid deeply nested control flow statements.
                Open

                                } else if ctnr.State.ExitCode != 0 {
                                    return &exitError{code: ctnr.State.ExitCode, cause: healthErr}
                                }
                Severity: Major
                Found in daemon/cluster/executor/container/controller.go - About 45 mins to fix

                  Method controller.Remove has 5 return statements (exceeds 4 allowed).
                  Open

                  func (r *controller) Remove(ctx context.Context) error {
                      if err := r.checkClosed(); err != nil {
                          return err
                      }
                  
                  
                  Severity: Major
                  Found in daemon/cluster/executor/container/controller.go - About 35 mins to fix

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