.golangci.yml

linters-settings:
  misspell:
    locale: US
  staticcheck:
    checks:
      - all
      # SA1019 Using a deprecated function, variable, constant or field
      # Disabled, because we still support deprecated feature flags, which would cause the linter to complain
      - "-SA1019"
  govet:
    enable:
      - fieldalignment
    disable:
      # Disable checking for copied locks since it causes a lot of annoying false-positives
      - copylocks
  goconst:
    ignore-tests: true
  gosec:
    excludes:
      - G101 # "pattern": "(?i)passwd|pass|password|pwd|secret|private_key|token"
      - G305 # File traversal when extracting zip/tar archive
  revive:
    enable-all-rules: true
    rules:
      - name: cognitive-complexity
        arguments: [20] # max allowed cognitive complexity factor
      - name: function-result-limit
        arguments: [3]
      - name: function-length
        # following values set to avoid further regressions:
        arguments: [52, 468]  # the maximum allowed statements and lines. 0 disables the check
      - name: cyclomatic
        arguments: [12]
      - name: banned-characters
        disabled: true
      - name: file-header
        disabled: true
      - name: max-public-structs
        disabled: true
      - name: argument-limit
        arguments: [5]
      - name: line-length-limit
        disabled: true
      - name: add-constant
        disabled: true
      - name: var-naming
        disabled: true
      - name: unused-receiver
        disabled: true
      - name: import-shadowing
        disabled: true
      - name: modifies-value-receiver
        disabled: true
      - name: bare-return
        disabled: true
      - name: bare-return
        disabled: true
      - name: if-return
        disabled: true
      - name: redefines-builtin-id
        disabled: true
      - name: context-keys-type
        disabled: true
      - name: unused-parameter
        disabled: true
      - name: time-naming
        disabled: true
      - name: errorf
        disabled: true
      - name: unexported-return
        disabled: true
      - name: unhandled-error
        disabled: true
      - name: confusing-naming
        disabled: true
      - name: indent-error-flow
        disabled: true
      - name: early-return
        disabled: true
      - name: bool-literal-in-expr
        disabled: true
      - name: error-strings
        disabled: true
      - name: empty-lines
        disabled: true
      - name: flag-parameter
        disabled: true
      - name: blank-imports
        disabled: true
      - name: increment-decrement
        disabled: true
      - name: context-as-argument
        disabled: true
      - name: confusing-results
        disabled: true
      - name: receiver-naming
        disabled: true
      - name: nested-structs
        disabled: true
      - name: struct-tag
        disabled: true
      - name: error-naming
        disabled: true
      - name: range-val-address
        disabled: true
      - name: import-alias-naming
        arguments: ["^[a-z][\\w]{0,}$"]
      - name: unchecked-type-assertion
        disabled: true
  depguard:
    rules:
      all:
        files:
          - $all
        allow:
          - $gostd
          # Approved orgs.
          - "github.com/Dynatrace"
          - "github.com/container-storage-interface"
          - "github.com/containers"
          - "github.com/klauspost"
          - "github.com/opencontainers"
          - "github.com/prometheus"
          - "istio.io"
          - "k8s.io"
          - "sigs.k8s.io"

          # Approved packages.
          - "github.com/mattn/go-sqlite3"
          - "github.com/pkg/errors"
          - "github.com/spf13/afero"
          - "github.com/spf13/cobra" # For CLI
          - "github.com/evanphx/json-patch"
          - "github.com/go-logr/logr"
          - "github.com/stretchr/testify"
          - "github.com/google/go-containerregistry"
          - "github.com/docker/cli"
          - "github.com/go-gormigrate/gormigrate"
          - "github.com/google/uuid"

          # Allowed packages in container-based builder.
        deny:
          # TODO: (andrii) Potentially uncomment it in future, but requires some refactoring
          # - pkg: "reflect"
          #   desc: Please don't use reflect package
          - pkg: "unsafe"
            desc: Please don't use unsafe package

      main:
        files:
          - $all
          # Don't allow go-cmp in non-test code.
          # NOTE: test code is allowed to use github.com/google/go-cmp (there is no
          #       deny for it) but non-test code is not.
          - "!$test"
          - "!test/**/*.go"
          - "!**/testing/**"
          - "!**/*mock*/**/.go"
        deny:
          - pkg: "github.com/google/go-cmp"
            desc: Please don't use go-cmp for non-test code.
  gomnd:
    checks:
      - argument
      - case
      - condition
      - operation
      - return
    ignored-files:
      - test*.go,testing.go
    ignored-functions:
      - '^time\.'
      - strings.SplitN
      - '^wait\.'
      - rand.WithLength
      - '^require\.'
      - WaitForCondition
      - '^int*'
    ignored-numbers:
      - '0666'
      - '0644'
      - '0755'
      - '0770'
      - '0755'
      - '0000'
      - '1001'
      - '1000'
      - '1234'
  dupl:
    threshold: 150

linters:
  disable-all: true
  enable:
  - asasalint                 # Check for pass []any as any in variadic func(...any).
  - asciicheck                # Checks that all code identifiers does not have non-ASCII symbols in the name.
  - bidichk                   # Checks for dangerous unicode character sequences.
  - decorder                  # Check declaration order and count of types, constants, variables and functions.
  - depguard                  # Go linter that checks if package imports are in a list of acceptable packages
  - dogsled                   # Checks assignments with too many blank identifiers (e.g. x, _, _, _, := f())
  - dupl                      # Tool for code clone detection.
  - durationcheck             # Check for two durations multiplied together.
  - errorlint                 # Errorlint is a linter for that can be used to find code that will cause problems with the error wrapping scheme introduced in Go 1.13.
  - forbidigo                 # Forbids identifiers.
  - gci                       # Gci controls Go package import order and makes it always deterministic.
  - gocheckcompilerdirectives # Checks that go compiler directive comments (//go:) are valid.
  - gochecksumtype            # Run exhaustiveness checks on Go "sum types"
  - gocognit                  # Computes and checks the cognitive complexity of functions.
  - goconst                   # Finds repeated strings that could be replaced by a constant
  - gocritic                  # Provides diagnostics that check for bugs, performance and style issues.
  - gocyclo                   # Computes and checks the cyclomatic complexity of functions.	complexity.
  - godot                     # Check if comments end in a period.
  - gofmt                     # Gofmt checks whether code was gofmt-ed. By default this tool runs with -s option to check for code simplification
  - goheader                  # Checks is file header matches to pattern.
  - gomnd                     # An analyzer to detect magic numbers.
  - gomoddirectives           # Manage the use of 'replace', 'retract', and 'excludes' directives in go.mod.
  - gomodguard                # Allow and block list linter for direct Go module dependencies. This is different from depguard where there are different block types for example version constraints and module recommendations.
  - goprintffuncname          # Checks that printf-like functions are named with f at the end.
  - gosec                     # Inspects source code for security problems
  - gosimple                  # Linter for Go source code that specializes in simplifying code.
  - gosmopolitan              # Report certain i18n/l10n anti-patterns in your Go codebase.
  - govet                     # Vet examines Go source code and reports suspicious constructs, such as Printf calls whose arguments do not align with the format string
  - grouper                   # Analyze expression groups.
  - importas                  # Enforces consistent import aliases.
  - ineffassign               # Detects when assignments to existing variables are not used
  - loggercheck               # Checks key value pairs for common logger libraries (kitlog,klog,logr,zap).
  - makezero                  # Finds slice declarations with non-zero initial length.
  - mirror                    # Reports wrong mirror patterns of bytes/strings usage.
  - misspell                  # Finds commonly misspelled English words in comments.
  - nakedret                  # Checks that functions with naked returns are not longer than a maximum size (can be zero).
  - nilerr                    # Finds the code that returns nil even if it checks that the error is not nil.
  - nilnil                    # Checks that there is no simultaneous return of nil error and an invalid value.
  - nlreturn                  # Nlreturn checks for a new line before return and branch statements to increase code clarity.
  - noctx                     # Finds sending http request without context.Context.
  - nolintlint                # Reports ill-formed or insufficient nolint directives.
  - nosprintfhostport         # Checks for misuse of Sprintf to construct a host with port in a URL.
  - perfsprint                # Checks that fmt.Sprintf can be replaced with a faster alternative.
  - prealloc                  # Finds slice declarations that could potentially be pre-allocated
  - predeclared               # Find code that shadows one of Go's predeclared identifiers.
  - protogetter               # Reports direct reads from proto message fields when getters should be used.
  - reassign                  # Checks that package variables are not reassigned.
  - revive                    # Fast, configurable, extensible, flexible, and beautiful linter for Go. Drop-in replacement of golint.
  - sloglint                  # Ensure consistent code style when using log/slog.
  - staticcheck               # It's a set of rules from staticcheck. It's not the same thing as the staticcheck binary. The author of staticcheck doesn't support or approve the use of staticcheck as a library inside golangci-lint.
  - tenv                      # tenv is analyzer that detects using os.Setenv instead of t.Setenv since Go1.17
  - testableexamples          # Linter checks if examples are testable (have an expected output).
  - testifylint               # Checks usage of github.com/stretchr/testify.
  - thelper                   # Thelper detects tests helpers which is not start with t.Helper() method.
  - tparallel                 # tparallel detects inappropriate usage of t.Parallel() method in your Go test codes
  - unconvert                 # Remove unnecessary type conversions
  - unparam                   # Reports unused function parameters
  - unused                    # Checks Go code for unused constants, variables, functions and types
  - usestdlibvars             # A linter that detect the possibility to use variables/constants from the Go standard library.
  - wastedassign              # wastedassign finds wasted assignment statements.
  - whitespace                # Tool for detection of leading and trailing whitespace.
  - wsl                       # Add or remove empty lines.
  - zerologlint               # Detects the wrong usage of zerolog that a user forgets to dispatch with Send or Msg.

# Blocked:
# false positive -> https://github.com/timakin/bodyclose/issues/51
# - bodyclose         # Checks whether HTTP response body is closed successfully.

# TODO: Requires some code changes before enabling:
# - contextcheck      # Check whether the function uses a non-inherited context.
# - cyclop            # Checks function and package cyclomatic complexity.
# - dupword           # Checks for duplicate words in the source code.	comment
# - errcheck          # enabled by default and recommended
# - errchkjson        # Checks types passed to the json encoding functions. Reports unsupported types and reports occations, where the check for the returned error can be omitted.
# - errname           # Checks that sentinel errors are prefixed with the Err and error types are suffixed with the Error.
# - execinquery       # Execinquery is a linter about query string checker in Query function which reads your Go src files and warning it finds.
# - exhaustruct       # Checks if all structure fields are initialized.
# - exportloopref     # Checks for pointers to enclosing loop variables.
# - forcetypeassert   # Finds forced type assertions.
# - funlen            # Tool for detection of long functions.
# - gochecknoglobals  # Check that no global variables exist.
# - gochecknoinits    # Checks that no init functions are present in Go code.
# - goerr113          # Go linter to check the errors handling expressions.
# - gofumpt           # Gofumpt checks whether code was gofumpt-ed.
# - inamedparam       # reports interfaces with unnamed method parameters.
# - ireturn           # Accept Interfaces, Return Concrete Types.
# - maintidx          # Maintidx measures the maintainability index of each function.
# - musttag           # Enforce field tags in (un)marshaled structs.
# - nestif            # Reports deeply nested if statements.
# - nonamedreturns    # Reports all named returns.
# - paralleltest      # Detects missing usage of t.Parallel() method in your Go test.
#  - promlinter       # Check Prometheus metrics naming via promlint.
# - rowserrcheck      # Checks whether Rows.Err of rows is checked successfully.
# - sqlclosecheck     # Checks that sql.Rows and sql.Stmt are closed.
# - wrapcheck         # Checks that errors returned from external packages are wrapped.
# TODO: Need to discuss/decide/remove
# - exhaustive     # Check exhaustiveness of enum switch statements.
# - godox          # Tool for detection of FIXME, TODO and other comment keywords.
# - inamedparam    # reports interfaces with unnamed method parameters.
# - interfacebloat # A linter that checks the number of methods inside an interface.
# - lll            # Reports long lines.
# - stylecheck     # Stylecheck is a replacement for golint.
# - tagliatelle    # Checks the struct tags.
# - testpackage    # Linter that makes you use a separate _test package.


service:
  golangci-lint-version: 1.55.x # use the fixed version to not introduce new linters unexpectedly

issues:
  exclude-rules:
    # Exclude duplicate code and function length and complexity checking in test
    # files (due to common repeats and long functions in test code)
    - path: _(test|gen)\.go
      linters:
        - dupl
        - wsl
        - perfsprint
    - path: (test/*)
      linters:
        - noctx
        - wsl
        - thelper
        - perfsprint
        - govet
    - path: _(test|gen)\.go
      linters:
        - govet
        - dupl
    - linters:
        - gosec
      path: pkg/webhook/validation/proxy_url_test.go
    - linters:
        - gosec
      path: pkg/ingestendpoint/secret_test.go
    - linters:
        - unparam
      text: always receives
    - linters:
        - revive
      path: pkg/clients/dynatrace # it's awaiting refactoring
    # Run some linter only for test files by excluding its issues for everything else.
    - path-except: 'pkg/api/(.+)\.go'
      linters:
        - godot

run:
  skip-dirs:
    - pkg/api/v1alpha1/dynakube # legacy version, should not be changed