.golangci.yml

linters:
  enable:
    - bodyclose
    - copyloopvar   # Detects places where loop variables are copied.
    - depguard
    - dogsled
    - dupword       # Detects duplicate words.
    - durationcheck
    - errchkjson
    - gocritic      # Metalinter; detects bugs, performance, and styling issues.
    - gocyclo
    - gofumpt       # Detects whether code was gofumpt-ed.
    - goimports
    - gosec         # Detects security problems.
    - gosimple
    - govet
    - ineffassign
    - lll
    - misspell      # Detects commonly misspelled English words in comments.
    - nakedret
    - nilerr        # Detects code that returns nil even if it checks that the error is not nil.
    - nolintlint    # Detects ill-formed or insufficient nolint directives.
    - perfsprint    # Detects fmt.Sprintf uses that can be replaced with a faster alternative.
    - prealloc      # Detects slice declarations that could potentially be pre-allocated.
    - predeclared   # Detects code that shadows one of Go's predeclared identifiers
    - reassign
    - revive        # Metalinter; drop-in replacement for golint.
    - staticcheck
    - stylecheck    # Replacement for golint
    - tenv          # Detects using os.Setenv instead of t.Setenv.
    - thelper       # Detects test helpers without t.Helper().
    - tparallel     # Detects inappropriate usage of t.Parallel().
    - typecheck
    - unconvert     # Detects unnecessary type conversions.
    - unparam
    - unused
    - usestdlibvars
    - wastedassign

  disable:
    - errcheck

run:
  # prevent golangci-lint from deducting the go version to lint for through go.mod,
  # which causes it to fallback to go1.17 semantics.
  go: "1.23.3"
  timeout: 5m

linters-settings:
  depguard:
    rules:
      main:
        deny:
          - pkg: io/ioutil
            desc: The io/ioutil package has been deprecated, see https://go.dev/doc/go1.16#ioutil
  gocyclo:
    min-complexity: 16
  gosec:
    excludes:
      - G104 # G104: Errors unhandled; (TODO: reduce unhandled errors, or explicitly ignore)
      - G113 # G113: Potential uncontrolled memory consumption in Rat.SetString (CVE-2022-23772); (only affects go < 1.16.14. and go < 1.17.7)
      - G115 # G115: integer overflow conversion; (TODO: verify these: https://github.com/docker/cli/issues/5584)
      - G306 # G306: Expect WriteFile permissions to be 0600 or less (too restrictive; also flags "0o644" permissions)
      - G307 # G307: Deferring unsafe method "*os.File" on type "Close" (also EXC0008); (TODO: evaluate these and fix where needed: G307: Deferring unsafe method "*os.File" on type "Close")
  govet:
    enable:
      - shadow
    settings:
      shadow:
        strict: true
  lll:
    line-length: 200
  nakedret:
    command: nakedret
    pattern: ^(?P<path>.*?\\.go):(?P<line>\\d+)\\s*(?P<message>.*)$

  revive:
    rules:
      # https://github.com/mgechev/revive/blob/master/RULES_DESCRIPTIONS.md#import-shadowing
      - name: import-shadowing
        severity: warning
        disabled: false
      # https://github.com/mgechev/revive/blob/master/RULES_DESCRIPTIONS.md#empty-block
      - name: empty-block
        severity: warning
        disabled: false
      # https://github.com/mgechev/revive/blob/master/RULES_DESCRIPTIONS.md#empty-lines
      - name: empty-lines
        severity: warning
        disabled: false
      # https://github.com/mgechev/revive/blob/master/RULES_DESCRIPTIONS.md#use-any
      - name: use-any
        severity: warning
        disabled: false

issues:
  # The default exclusion rules are a bit too permissive, so copying the relevant ones below
  exclude-use-default: false

  # This option has been defined when Go modules was not existed and when the
  # golangci-lint core was different, this is not something we still recommend.
  exclude-dirs-use-default: false

  exclude:
    - parameter .* always receives

  exclude-files:
    - cli/compose/schema/bindata.go
    - .*generated.*

  exclude-rules:
    # We prefer to use an "exclude-list" so that new "default" exclusions are not
    # automatically inherited. We can decide whether or not to follow upstream
    # defaults when updating golang-ci-lint versions.
    # Unfortunately, this means we have to copy the whole exclusion pattern, as
    # (unlike the "include" option), the "exclude" option does not take exclusion
    # ID's.
    #
    # These exclusion patterns are copied from the default excluses at:
    # https://github.com/golangci/golangci-lint/blob/v1.44.0/pkg/config/issues.go#L10-L104
    #
    # The default list of exclusions can be found at:
    # https://golangci-lint.run/usage/false-positives/#default-exclusions

    # EXC0001
    - text: "Error return value of .((os\\.)?std(out|err)\\..*|.*Close|.*Flush|os\\.Remove(All)?|.*print(f|ln)?|os\\.(Un)?Setenv). is not checked"
      linters:
        - errcheck
    # EXC0003
    - text: "func name will be used as test\\.Test.* by other packages, and that stutters; consider calling this"
      linters:
        - revive
    # EXC0006
    - text: "Use of unsafe calls should be audited"
      linters:
        - gosec
    # EXC0007
    - text: "Subprocess launch(ed with variable|ing should be audited)"
      linters:
        - gosec
    # EXC0009
    - text: "(Expect directory permissions to be 0750 or less|Expect file permissions to be 0600 or less)"
      linters:
        - gosec
    # EXC0010
    - text: "Potential file inclusion via variable"
      linters:
        - gosec

    # TODO: make sure all packages have a description. Currently, there's 67 packages without.
    - text: "package-comments: should have a package comment"
      linters:
        - revive
    # FIXME temporarily suppress these (see https://github.com/gotestyourself/gotest.tools/issues/272)
    - text: "SA1019: (assert|cmp|is)\\.ErrorType is deprecated"
      linters:
        - staticcheck
    # Exclude some linters from running on tests files.
    - path: _test\.go
      linters:
        - errcheck
        - gosec
    - text: "ST1000: at least one file in a package should have a package comment"
      linters:
        - stylecheck

    # Allow "err" and "ok" vars to shadow existing declarations, otherwise we get too many false positives.
    - text: '^shadow: declaration of "(err|ok)" shadows declaration'
      linters:
        - govet


  # Maximum issues count per one linter. Set to 0 to disable. Default is 50.
  max-issues-per-linter: 0

  # Maximum count of issues with the same text. Set to 0 to disable. Default is 3.
  max-same-issues: 0