Sign upLogin

dotcloud/docker

View on GitHub
Star
distribution/xfer/download.go

Summary

Maintainability
F
3 days
Test Coverage

Method LayerDownloadManager.makeDownloadFunc has a Cognitive Complexity of 82 (exceeds 20 allowed). Consider refactoring.
Open

func (ldm *LayerDownloadManager) makeDownloadFunc(descriptor DownloadDescriptor, parentLayer layer.ChainID, parentDownload *downloadTransfer) doFunc {
    return func(progressChan chan<- progress.Progress, start <-chan struct{}, inactive chan<- struct{}) transfer {
        d := &downloadTransfer{
            transfer:   newTransfer(),
            layerStore: ldm.layerStore,
Severity: Minor
Found in distribution/xfer/download.go - About 1 day 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 LayerDownloadManager.makeDownloadFunc has 127 lines of code (exceeds 50 allowed). Consider refactoring.
Open

func (ldm *LayerDownloadManager) makeDownloadFunc(descriptor DownloadDescriptor, parentLayer layer.ChainID, parentDownload *downloadTransfer) doFunc {
    return func(progressChan chan<- progress.Progress, start <-chan struct{}, inactive chan<- struct{}) transfer {
        d := &downloadTransfer{
            transfer:   newTransfer(),
            layerStore: ldm.layerStore,
Severity: Major
Found in distribution/xfer/download.go - About 4 hrs to fix

    Method LayerDownloadManager.Download has a Cognitive Complexity of 36 (exceeds 20 allowed). Consider refactoring.
    Open

    func (ldm *LayerDownloadManager) Download(ctx context.Context, initialRootFS image.RootFS, layers []DownloadDescriptor, progressOutput progress.Output) (image.RootFS, func(), error) {
    var (
        topLayer       layer.Layer
        topDownload    *downloadTransfer
        watcher        *watcher
    Severity: Minor
    Found in distribution/xfer/download.go - About 2 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

    Method LayerDownloadManager.Download has 89 lines of code (exceeds 50 allowed). Consider refactoring.
    Open

    func (ldm *LayerDownloadManager) Download(ctx context.Context, initialRootFS image.RootFS, layers []DownloadDescriptor, progressOutput progress.Output) (image.RootFS, func(), error) {
    var (
        topLayer       layer.Layer
        topDownload    *downloadTransfer
        watcher        *watcher
    Severity: Major
    Found in distribution/xfer/download.go - About 2 hrs to fix

      Method LayerDownloadManager.makeDownloadFuncFromDownload has a Cognitive Complexity of 32 (exceeds 20 allowed). Consider refactoring.
      Open

      func (ldm *LayerDownloadManager) makeDownloadFuncFromDownload(descriptor DownloadDescriptor, sourceDownload *downloadTransfer, parentDownload *downloadTransfer) doFunc {
    return func(progressChan chan<- progress.Progress, start <-chan struct{}, inactive chan<- struct{}) transfer {
        d := &downloadTransfer{
            transfer:   newTransfer(),
            layerStore: ldm.layerStore,
      Severity: Minor
      Found in distribution/xfer/download.go - About 2 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

      Method LayerDownloadManager.makeDownloadFuncFromDownload has 65 lines of code (exceeds 50 allowed). Consider refactoring.
      Open

      func (ldm *LayerDownloadManager) makeDownloadFuncFromDownload(descriptor DownloadDescriptor, sourceDownload *downloadTransfer, parentDownload *downloadTransfer) doFunc {
    return func(progressChan chan<- progress.Progress, start <-chan struct{}, inactive chan<- struct{}) transfer {
        d := &downloadTransfer{
            transfer:   newTransfer(),
            layerStore: ldm.layerStore,
      Severity: Minor
      Found in distribution/xfer/download.go - About 1 hr to fix

        Method LayerDownloadManager.Download has 5 return statements (exceeds 4 allowed).
        Open

        func (ldm *LayerDownloadManager) Download(ctx context.Context, initialRootFS image.RootFS, layers []DownloadDescriptor, progressOutput progress.Output) (image.RootFS, func(), error) {
    var (
        topLayer       layer.Layer
        topDownload    *downloadTransfer
        watcher        *watcher
        Severity: Major
        Found in distribution/xfer/download.go - About 35 mins to fix

          Similar blocks of code found in 2 locations. Consider refactoring.
          Open

                      selectLoop:
                for {
                    progress.Updatef(progressOutput, descriptor.ID(), "Retrying in %d second%s", delay, (map[bool]string{true: "s"})[delay != 1])
                    select {
                    case <-ticker.C:
          Severity: Major
          Found in distribution/xfer/download.go and 1 other location - About 1 hr to fix
          distribution/xfer/upload.go on lines 153..168

          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 143.

          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

          Further Reading

          There are no issues that match your filters.

          Category
          Status