.golangci.yml

## Golden config for golangci-lint v1.47.3
#
# This is the best config for golangci-lint based on my experience and opinion.
# It is very strict, but not extremely strict.
# Feel free to adopt and change it for your needs.

run:
  # Timeout for analysis, e.g. 30s, 5m.
  # Default: 1m
  timeout: 3m


# This file contains only configs which differ from defaults.
# All possible options can be found here https://github.com/golangci/golangci-lint/blob/master/.golangci.reference.yml
linters-settings:
  cyclop:
    # The maximal code complexity to report.
    # Default: 10
    max-complexity: 30
    # The maximal average package complexity.
    # If it's higher than 0.0 (float) the check is enabled
    # Default: 0.0
    package-average: 10.0

  errcheck:
    # Report about not checking of errors in type assertions: `a := b.(MyStruct)`.
    # Such cases aren't reported by default.
    # Default: false
    check-type-assertions: true

  funlen:
    # Checks the number of lines in a function.
    # If lower than 0, disable the check.
    # Default: 60
    lines: 100
    # Checks the number of statements in a function.
    # If lower than 0, disable the check.
    # Default: 40
    statements: 50

  gocognit:
    # Minimal code complexity to report
    # Default: 30 (but we recommend 10-20)
    min-complexity: 20

  gocritic:
    # Settings passed to gocritic.
    # The settings key is the name of a supported gocritic checker.
    # The list of supported checkers can be find in https://go-critic.github.io/overview.
    settings:
      captLocal:
        # Whether to restrict checker to params only.
        # Default: true
        paramsOnly: false
      underef:
        # Whether to skip (*x).method() calls where x is a pointer receiver.
        # Default: true
        skipRecvDeref: false

  mnd:
    # List of function patterns to exclude from analysis.
    # Values always ignored: `time.Date`
    # Default: []
    ignored-functions:
      - os.Chmod
      - os.Mkdir
      - os.MkdirAll
      - os.OpenFile
      - os.WriteFile
      - prometheus.ExponentialBuckets
      - prometheus.ExponentialBucketsRange
      - prometheus.LinearBuckets
      - strconv.FormatFloat
      - strconv.FormatInt
      - strconv.FormatUint
      - strconv.ParseFloat
      - strconv.ParseInt
      - strconv.ParseUint

  gomodguard:
    blocked:
      # List of blocked modules.
      # Default: []
      modules:
        - github.com/golang/protobuf:
            recommendations:
              - google.golang.org/protobuf
            reason: "see https://developers.google.com/protocol-buffers/docs/reference/go/faq#modules"
        - github.com/satori/go.uuid:
            recommendations:
              - github.com/google/uuid
            reason: "satori's package is not maintained"
        - github.com/gofrs/uuid:
            recommendations:
              - github.com/google/uuid
            reason: "see recommendation from dev-infra team: https://confluence.gtforge.com/x/gQI6Aw"

  govet:
    # Enable all analyzers.
    # Default: false
    enable-all: true
    # Disable analyzers by name.
    # Run `go tool vet help` to see all analyzers.
    # Default: []
    disable:
      - fieldalignment # too strict
    # Settings per analyzer.
    settings:
      shadow:
        # Whether to be strict about shadowing; can be noisy.
        # Default: false
        strict: true

  nakedret:
    # Make an issue if func has more lines of code than this setting, and it has naked returns.
    # Default: 30
    max-func-lines: 0

  nolintlint:
    # Exclude following linters from requiring an explanation.
    # Default: []
    allow-no-explanation: [ funlen, gocognit, lll ]
    # Enable to require an explanation of nonzero length after each nolint directive.
    # Default: false
    require-explanation: true
    # Enable to require nolint directives to mention the specific linter being suppressed.
    # Default: false
    require-specific: true

  rowserrcheck:
    # database/sql is always checked
    # Default: []
    packages:
      - github.com/jmoiron/sqlx

  tenv:
    # The option `all` will run against whole test files (`_test.go`) regardless of method/function signatures.
    # Otherwise, only methods that take `*testing.T`, `*testing.B`, and `testing.TB` as arguments are checked.
    # Default: false
    all: true


linters:
  disable-all: true
  enable:
    ## enabled by default
    - errcheck # Errcheck is a program for checking for unchecked errors in go programs. These unchecked errors can be critical bugs in some cases
    - gosimple # Linter for Go source code that specializes in simplifying a code
    - govet # Vet examines Go source code and reports suspicious constructs, such as Printf calls whose arguments do not align with the format string
    - ineffassign # Detects when assignments to existing variables are not used
    - staticcheck # Staticcheck is a go vet on steroids, applying a ton of static analysis checks
    - unused # Checks Go code for unused constants, variables, functions and types
    ## disabled by default
    # - asasalint # Check for pass []any as any in variadic func(...any)
    - asciicheck # Simple linter to check that your code does not contain non-ASCII identifiers
    - bidichk # Checks for dangerous unicode character sequences
    - bodyclose # checks whether HTTP response body is closed successfully
    - contextcheck # check the function whether use a non-inherited context
    - cyclop # checks function and package cyclomatic complexity
    - dupl # Tool for code clone detection
    - durationcheck # check for two durations multiplied together
    - errname # Checks that sentinel errors are prefixed with the Err and error types are suffixed with the Error.
    - 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.
    - exhaustive # check exhaustiveness of enum switch statements
    - forbidigo # Forbids identifiers
    - 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
    - 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
    - godot # Check if comments end in a period
    - goimports # In addition to fixing imports, goimports also formats your code in the same style as gofmt.
    - 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
    - lll # Reports long lines
    - makezero # Finds slice declarations with non-zero initial length
    # - nakedret # Finds naked returns in functions greater than a specified function length
    - mnd # An analyzer to detect magic numbers.
    - nestif # Reports deeply nested if statements
    - 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.
    # - noctx # noctx finds sending http request without context.Context
    - nolintlint # Reports ill-formed or insufficient nolint directives
    # - nonamedreturns # Reports all named returns
    - nosprintfhostport # Checks for misuse of Sprintf to construct a host with port in a URL.
    - predeclared # find code that shadows one of Go's predeclared identifiers
    - promlinter # Check Prometheus metrics naming via promlint
    - revive # Fast, configurable, extensible, flexible, and beautiful linter for Go. Drop-in replacement of golint.
    - rowserrcheck # checks whether Err of rows is checked successfully
    - sqlclosecheck # Checks that sql.Rows and sql.Stmt are closed.
    - stylecheck # Stylecheck is a replacement for golint
    - testpackage # linter that makes you use a separate _test package
    - tparallel # tparallel detects inappropriate usage of t.Parallel() method in your Go test codes
    - unconvert # Remove unnecessary type conversions
    - unparam # Reports unused function parameters
    - usetesting # Reports uses of functions with replacement inside the testing package
    - wastedassign # wastedassign finds wasted assignment statements.
    - whitespace # Tool for detection of leading and trailing whitespace
    ## you may want to enable
    #- decorder # check declaration order and count of types, constants, variables and functions
    #- exhaustruct # Checks if all structure fields are initialized
    #- goheader # Checks is file header matches to pattern
    #- ireturn # Accept Interfaces, Return Concrete Types
    #- prealloc # [premature optimization, but can be used in some cases] Finds slice declarations that could potentially be preallocated
    #- varnamelen # [great idea, but too many false positives] checks that the length of a variable's name matches its scope
    #- wrapcheck # Checks that errors returned from external packages are wrapped
    ## disabled
    #- containedctx # containedctx is a linter that detects struct contained context.Context field
    #- depguard # [replaced by gomodguard] 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())
    #- errchkjson # [don't see profit + I'm against of omitting errors like in the first example https://github.com/breml/errchkjson] Checks types passed to the json encoding functions. Reports unsupported types and optionally reports occasions, where the check for the returned error can be omitted.
    #- forcetypeassert # [replaced by errcheck] finds forced type assertions
    #- gci # Gci controls golang package import order and makes it always deterministic.
    #- godox # Tool for detection of FIXME, TODO and other comment keywords
    #- goerr113 # [too strict] Golang linter to check the errors handling expressions
    #- gofmt # [replaced by goimports] Gofmt checks whether code was gofmt-ed. By default this tool runs with -s option to check for code simplification
    #- gofumpt # [replaced by goimports, gofumports is not available yet] Gofumpt checks whether code was gofumpt-ed.
    #- grouper # An analyzer to analyze expression groups.
    #- ifshort # Checks that your code uses short syntax for if-statements whenever possible
    #- importas # Enforces consistent import aliases
    #- maintidx # maintidx measures the maintainability index of each function.
    #- misspell # [useless] Finds commonly misspelled English words in comments
    #- nlreturn # [too strict and mostly code is not more readable] nlreturn checks for a new line before return and branch statements to increase code clarity
    #- nosnakecase # Detects snake case of variable naming and function name. # TODO: maybe enable after https://github.com/sivchari/nosnakecase/issues/14
    #- paralleltest # [too many false positives] paralleltest detects missing usage of t.Parallel() method in your Go test
    #- tagliatelle # Checks the struct tags.
    #- thelper # thelper detects golang test helpers without t.Helper() call and checks the consistency of test helpers
    #- wsl # [too strict and mostly code is not more readable] Whitespace Linter - Forces you to use empty lines!


issues:
  # Maximum count of issues with the same text.
  # Set to 0 to disable.
  # Default: 3
  max-same-issues: 50

  exclude-rules:
    - source: "^//\\s*go:generate\\s"
      linters: [ lll ]
    - source: "(noinspection|TODO)"
      linters: [ godot ]
    - source: "//noinspection"
      linters: [ gocritic ]
    - source: "^\\s+if _, ok := err\\.\\([^.]+\\.InternalError\\); ok {"
      linters: [ errorlint ]
    - path: "_test\\.go"
      linters:
        - bodyclose
        - dupl
        - funlen
        - goconst
        - gosec
        - noctx
        - wrapcheck