.golangci.yml

version: "2"

formatters:
  enable:
    - gci
    - gofumpt
  exclusions:
    generated: lax
    paths:
      - pkg/provider/kubernetes/crd/generated/

linters:
  default: all
  disable:
    - bodyclose # too many false-positive
    - containedctx # too many false-positive
    - contextcheck # too many false-positive
    - cyclop # duplicate of gocyclo
    - dupl # Too strict
    - err113 # Too strict
    - exhaustive # Not relevant
    - exhaustruct # Not relevant
    - forcetypeassert # Too strict
    - gochecknoglobals
    - gochecknoinits
    - gocognit # Too strict
    - gocyclo # FIXME must be fixed
    - gosec # Too strict
    - gosmopolitan  # not relevant
    - ireturn # Not relevant
    - lll # Not relevant
    - maintidx # kind of duplicate of gocyclo
    - makezero # Not relevant
    - mnd # Too strict
    - nestif # Too many false-positive.
    - nilnil # Not relevant
    - nlreturn # Not relevant
    - noctx # Too strict
    - nonamedreturns # Too strict
    - paralleltest # Not relevant
    - prealloc # Too many false-positive.
    - rowserrcheck # not relevant (SQL)
    - sqlclosecheck # not relevant (SQL)
    - tagliatelle # Too strict
    - testpackage # Too strict
    - tparallel # Not relevant
    - varnamelen # Not relevant
    - wrapcheck # Too strict
    - wsl # Too strict

  settings:
    depguard:
      rules:
        main:
          deny:
            - pkg: github.com/instana/testify
              desc: not allowed
            - pkg: github.com/pkg/errors
              desc: Should be replaced by standard lib errors package
    errcheck:
      exclude-functions:
        - fmt.Fprintln
    forbidigo:
      forbid:
        - pattern: ^print(ln)?$
        - pattern: ^spew\.Print(f|ln)?$
        - pattern: ^spew\.Dump$
    funlen:
      lines: -1
      statements: 120
    goconst:
      min-len: 3
      min-occurrences: 4
    gocyclo:
      min-complexity: 14
    godox:
      keywords:
        - FIXME
    gomoddirectives:
      toolchain-pattern: go1\.\d+\.\d+$
      tool-forbidden: true
      go-version-pattern: ^1\.\d+(\.0)?$
      replace-allow-list:
        - github.com/abbot/go-http-auth
        - github.com/gorilla/mux
        - github.com/mailgun/minheap
        - github.com/mailgun/multibuf
        - github.com/jaguilar/vt100
        - github.com/cucumber/godog
    govet:
      enable-all: true
      disable:
        - shadow
        - fieldalignment
    importas:
      no-unaliased: true
      alias:
        - pkg: github.com/docker/compose/v2/pkg/api
          alias: composeapi

        # Standard Kubernetes rewrites:
        - pkg: k8s.io/api/core/v1
          alias: corev1
        - pkg: k8s.io/api/networking/v1
          alias: netv1
        - pkg: k8s.io/api/networking/v1beta1
          alias: netv1beta1
        - pkg: k8s.io/api/admission/v1
          alias: admv1
        - pkg: k8s.io/api/admission/v1beta1
          alias: admv1beta1
        - pkg: k8s.io/api/extensions/v1beta1
          alias: extv1beta1
        - pkg: k8s.io/apimachinery/pkg/apis/meta/v1
          alias: metav1
        - pkg: k8s.io/apimachinery/pkg/types
          alias: ktypes
        - pkg: k8s.io/apimachinery/pkg/api/errors
          alias: kerror
        - pkg: k8s.io/client-go/kubernetes
          alias: kclientset
        - pkg: k8s.io/client-go/informers
          alias: kinformers
        - pkg: k8s.io/client-go/testing
          alias: ktesting
        - pkg: k8s.io/apimachinery/pkg/runtime/schema
          alias: kschema
        - pkg: k8s.io/client-go/kubernetes/scheme
          alias: kscheme
        - pkg: k8s.io/apimachinery/pkg/version
          alias: kversion
        - pkg: k8s.io/client-go/kubernetes/fake
          alias: kubefake
        - pkg: k8s.io/client-go/discovery/fake
          alias: discoveryfake

        # Kubernetes Gateway rewrites:
        - pkg: sigs.k8s.io/gateway-api/pkg/client/clientset/gateway/versioned
          alias: gateclientset
        - pkg: sigs.k8s.io/gateway-api/pkg/client/informers/gateway/externalversions
          alias: gateinformers
        - pkg: sigs.k8s.io/gateway-api/apis/v1alpha2
          alias: gatev1alpha2

        # Traefik Kubernetes rewrites:
        - pkg: github.com/traefik/traefik/v3/pkg/provider/kubernetes/crd/traefikio/v1alpha1
          alias: traefikv1alpha1
        - pkg: github.com/traefik/traefik/v3/pkg/provider/kubernetes/crd/generated/clientset/versioned
          alias: traefikclientset
        - pkg: github.com/traefik/traefik/v3/pkg/provider/kubernetes/crd/generated/informers/externalversions
          alias: traefikinformers
        - pkg: github.com/traefik/traefik/v3/pkg/provider/kubernetes/crd/generated/clientset/versioned/scheme
          alias: traefikscheme
        - pkg: github.com/traefik/traefik/v3/pkg/provider/kubernetes/crd/generated/clientset/versioned/fake
          alias: traefikcrdfake
    misspell:
      locale: US
    revive:
      rules:
        - name: struct-tag
        - name: blank-imports
        - name: context-as-argument
        - name: context-keys-type
        - name: dot-imports
        - name: error-return
        - name: error-strings
        - name: error-naming
        - name: exported
          disabled: true
        - name: if-return
        - name: increment-decrement
        - name: var-naming
        - name: var-declaration
        - name: package-comments
          disabled: true
        - name: range
        - name: receiver-naming
        - name: time-naming
        - name: unexported-return
        - name: indent-error-flow
        - name: errorf
        - name: empty-block
        - name: superfluous-else
        - name: unused-parameter
          disabled: true
        - name: unreachable-code
        - name: redefines-builtin-id
    tagalign:
      align: false
      sort: true
      order:
        - description
        - json
        - toml
        - yaml
        - yml
        - label
        - label-slice-as-struct
        - file
        - kv
        - export
    testifylint:
      disable:
        - suite-dont-use-pkg
        - require-error
        - go-require
    perfsprint:
      err-error: true
      errorf: true
      sprintf1: true
      strconcat: false
    staticcheck:
      checks:
        - all
        - '-SA1019'
        - '-ST1000'
        - '-ST1003'
        - '-ST1016'
        - '-ST1020'
        - '-ST1021'
        - '-ST1022'
        - '-QF1001'
        - '-QF1008' # TODO must be fixed

  exclusions:
    generated: lax
    presets:
      - comments
      - std-error-handling
    rules:
      - path: (.+)_test.go
        linters:
          - canonicalheader
          - fatcontext
          - funlen
          - goconst
          - godot
      - path: (.+)_test.go
        text: ' always receives '
        linters:
          - unparam
      - path: pkg/server/middleware/middlewares.go
        text: Function 'buildConstructor' has too many statements
        linters:
          - funlen
      - path: pkg/provider/kubernetes/ingress-nginx/kubernetes.go
        text: Function 'loadConfiguration' has too many statements
        linters:
          - funlen
      - path: pkg/tracing/haystack/logger.go
        linters:
          - goprintffuncname
      - path: pkg/tracing/tracing.go
        text: printf-like formatting function 'SetErrorWithEvent' should be named 'SetErrorWithEventf'
        linters:
          - goprintffuncname
      - path: pkg/tls/tlsmanager_test.go
        text: 'SA1019: config.ClientCAs.Subjects has been deprecated since Go 1.18'
      - path: pkg/types/tls_test.go
        text: 'SA1019: tlsConfig.RootCAs.Subjects has been deprecated since Go 1.18'
      - path: pkg/provider/kubernetes/(crd|gateway)/client.go
        linters:
          - interfacebloat
      - path: pkg/observability/metrics/metrics.go
        linters:
          - interfacebloat
      - path: integration/healthcheck_test.go
        text: Duplicate words \(wsp2,\) found
        linters:
          - dupword
      - path: pkg/types/domain_test.go
        text: Duplicate words \(sub\) found
        linters:
          - dupword
      - path: pkg/provider/kubernetes/gateway/client_mock_test.go
        text: 'unusedwrite: unused write to field'
        linters:
          - govet
      - path: pkg/provider/acme/local_store.go
        linters:
          - musttag
      - path: pkg/tls/certificate.go
        text: the methods of "Certificates" use pointer receiver and non-pointer receiver.
        linters:
          - recvcheck
      - path: pkg/config/static/static_config.go
        source: 'errors.New\("Consul Catalog provider'
        text: 'ST1005: error strings should not be capitalized'
      - path: pkg/config/static/static_config.go
        source: 'errors.New\("Consul provider'
        text: 'ST1005: error strings should not be capitalized'
      - path: pkg/config/static/static_config.go
        source: 'errors.New\("Nomad provider'
        text: 'ST1005: error strings should not be capitalized'
      - path: (.+)\.go
        text: 'struct-tag: unknown option ''inline'' in JSON tag'
        linters:
          - revive
      - path: (.+)\.go
        text: 'struct-tag: unknown option ''omitzero'' in TOML tag'
        linters:
          - revive
      - path: (.+)\.go$
        text: 'SA1019: http.CloseNotifier has been deprecated' # FIXME must be fixed
      - path: (.+)\.go$
        text: 'SA1019: cfg.(SSLRedirect|SSLTemporaryRedirect|SSLHost|SSLForceHost|FeaturePolicy) is deprecated'
      - path: (.+)\.go$
        text: 'SA1019: c.Providers.(ConsulCatalog|Consul|Nomad).Namespace is deprecated'
      - path: pkg/provider/kubernetes/crd/kubernetes.go
        text: "Function 'loadConfigurationFromCRD' has too many statements"
        linters:
          - funlen
      - path: pkg/plugins/middlewarewasm.go
        text: 'the methods of "wasmMiddlewareBuilder" use pointer receiver and non-pointer receiver.'
        linters:
          - recvcheck
      - path: pkg/server/service/bufferpool.go
        text: 'SA6002: argument should be pointer-like to avoid allocations'
      - path: pkg/proxy/httputil/bufferpool.go
        text: 'SA6002: argument should be pointer-like to avoid allocations'
      - path: pkg/udp/conn.go
        text: 'SA6002: argument should be pointer-like to avoid allocations'
      - path: integration/integration_test.go
        text: 'var (gatewayAPIConformanceRunTest|traefikVersion) is unused'
      - path: pkg/server/router/router.go
        text: 'appendAssign: append result not assigned to the same slice'
        linters:
          - gocritic
    paths:
      - pkg/provider/kubernetes/crd/generated/

issues:
  max-issues-per-linter: 0
  max-same-issues: 0