.golangci.yaml

# Inspired by https://gist.github.com/maratori/47a4d00457a92aa426dbd48a18776322

# output configuration options
output:
  # Format: colored-line-number|line-number|json|tab|checkstyle|code-climate|junit-xml|github-actions
  # Default: colored-line-number
  format: checkstyle:report.xml,colored-line-number:stdout

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

# 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

    # report about assignment of errors to blank identifier: `num, _ := strconv.Atoi(numStr)`.
    # Such cases aren't reported by default.
    # Default: false
    check-blank: true

  exhaustive:
    # Program elements to check for exhaustiveness.
    # Default: [ switch ]
    check:
      - switch
      - map

  exhaustruct:
    # List of regular expressions to exclude struct packages and names from check.
    # Default: []
    exclude:
      # std libs
      - "^net/http.Client$"
      - "^net/http.Cookie$"
      - "^net/http.Request$"
      - "^net/http.Response$"
      - "^net/http.Server$"
      - "^net/http.Transport$"
      - "^net/url.URL$"
      - "^os/exec.Cmd$"
      - "^reflect.StructField$"
      # public libs (add more if needed)

  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

  goconst:
    # Minimal length of string constant.
    # Default: 3
    min-len: 2
    # Minimum occurrences of constant string count to trigger issue.
    # Default: 3
    min-occurrences: 2
    # Search also for duplicated numbers.
    # Default: false
    numbers: true
    # Minimum value, only works with goconst.numbers
    # Default: 3
    min: 2

  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

  gomnd:
    # List of function patterns to exclude from analysis.
    # Values always ignored: `time.Date`,
    # `strconv.FormatInt`, `strconv.FormatUint`, `strconv.FormatFloat`,
    # `strconv.ParseInt`, `strconv.ParseUint`, `strconv.ParseFloat`.
    # Default: []
    ignored-functions:
      - os.Chmod
      - os.Mkdir
      - os.MkdirAll
      - os.OpenFile
      - os.WriteFile
      - math.*
      - http.StatusText

  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, it warns about struct fields that are not aligned by size

    # 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

  nestif:
    # Minimal complexity of if statements to report.
    # Default: 5
    min-complexity: 4

  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

  lll:
    # Max line length, lines longer will be reported.
    # '\t' is counted as 1 character by default, and can be changed with the tab-width option.
    # Default: 120.
    line-length: 240

  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

  varnamelen:
    # The minimum length of a variable's name that is considered "long".
    # Variable names that are at least this long will be ignored.
    # Default: 3
    min-name-length: 2
    # Check method receivers.
    # Default: false
    # Ignore "ok" variables that hold the bool return value of a type assertion.
    # Default: false
    ignore-type-assert-ok: true
    # Ignore "ok" variables that hold the bool return value of a map index.
    # Default: false
    ignore-map-index-ok: true
    # Ignore "ok" variables that hold the bool return value of a channel receive.
    # Default: false
    ignore-chan-recv-ok: true

  godot:
    # Check periods at the end of sentences.
    period: false

linters:
  disable-all: true
  enable:
    #- errcheck # checking for unchecked errors, these unchecked errors can be critical bugs in some cases
    - gosimple # specializes in simplifying a code
    #- govet # 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 # is a go vet on steroids, applying a ton of static analysis checks
    - typecheck # like the front-end of a Go compiler, parses and type-checks Go code
    - unused # checks for unused constants, variables, functions and types
    - asasalint # checks for pass []any as any in variadic func(...any)
    - asciicheck # checks 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
    #- cyclop # checks function and package cyclomatic complexity
    #- dupl # tool for code clone detection
    - durationcheck # checks for two durations multiplied together
    - errname # checks that sentinel errors are prefixed with the Err and error types are suffixed with the Error
    #- errorlint # finds code that will cause problems with the error wrapping scheme introduced in Go 1.13
    - execinquery # checks query string in Query function which reads your Go src files and warning it finds
    - exhaustive # checks exhaustiveness of enum switch statements
    - exportloopref # checks for pointers to enclosing loop variables
    #- forbidigo # forbids identifiers
    #- funlen # tool for detection of long functions
    #- 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 # checks if comments end in a period
    - goimports # in addition to fixing imports, goimports also formats your code in the same style as gofmt
    #- gomnd # detects magic numbers
    - gomoddirectives # manages the use of 'replace', 'retract', and 'excludes' directives in go.mod
    - gomodguard # allow and block lists linter for direct Go module dependencies. This is different from depguard where there are different block types for example version constraints and module recommendations
    #- gosec # inspects source code for security problems
    #- lll # reports long lines
    - loggercheck # checks key value pairs for common logger libraries (kitlog,klog,logr,zap)
    #- makezero # finds slice declarations with non-zero initial length
    - nakedret # finds naked returns in functions greater than a specified function length
    #- 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 # 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 # finds code that shadows one of Go's predeclared identifiers
    - promlinter # checks Prometheus metrics naming via promlint
    - reassign # checks that package variables are not reassigned
    #- 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 # is a replacement for golint
    - tenv # detects using os.Setenv instead of t.Setenv since Go1.17
    - testableexamples # checks if examples are testable (have an expected output)
    #- testpackage # makes you use a separate _test package
    - tparallel # detects inappropriate usage of t.Parallel() method in your Go test codes
    - unconvert # removes unnecessary type conversions
    #- unparam # reports unused function parameters
    - usestdlibvars # detects the possibility to use variables/constants from the Go standard library
    - wastedassign # finds wasted assignment statements
    - whitespace # detects leading and trailing whitespace

    ## you may want to enable
    - decorder # checks declaration order and count of types, constants, variables and functions
    #- gci # controls golang package import order and makes it always deterministic
    - goheader # checks is file header matches to pattern
    - interfacebloat # checks the number of methods inside an interface
    #- 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
    #- containedctx # detects struct contained context.Context field
    - contextcheck # [too many false positives] checks the function whether use a non-inherited context
    - dogsled # checks assignments with too many blank identifiers (e.g. x, _, _, _, := f())
    #- dupword # [useless without config] checks for duplicate words in the source code
    - 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
    #- goerr113 # [too strict] checks the errors handling expressions
    - grouper # analyzes expression groups
    - importas # enforces consistent import aliases
    - 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] checks for a new line before return and branch statements to increase code clarity
    #- paralleltest # [too many false positives] detects missing usage of t.Parallel() method in your Go test
    - tagliatelle # checks the struct tags
    #- 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

    ## disabled
    # - exhaustruct # [highly recommend to enable] checks if all structure fields are initialized
    # - godox # detects FIXME, TODO and other comment keywords
    # - gochecknoglobals # checks that no global variables exist
    # - ireturn # accept interfaces, return concrete types

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