.golangci.yml

# forked from istio
service:
  # When updating this, also update bin/linters.sh accordingly
  golangci-lint-version: 1.22.x # use the fixed version to not introduce new linters unexpectedly
run:
  # timeout for analysis, e.g. 30s, 5m, default is 1m
  deadline: 20m

  # which dirs to skip: they won't be analyzed;
  # can use regexp here: generated.*, regexp is applied on full path;
  # default value is empty list, but next dirs are always skipped independently
  # from this option's value:
  #   	vendor$, third_party$, testdata$, examples$, Godeps$, builtin$
  skip-dirs:
    - genfiles$
    - vendor$

  # which files to skip: they will be analyzed, but issues from them
  # won't be reported. Default value is empty list, but there is
  # no need to include all autogenerated files, we confidently recognize
  # autogenerated files. If it's not please let us know.
  skip-files:
    - ".*\\.pb\\.go"
    - ".*\\.gen\\.go"

linters:
  enable-all: true
  disable:
    - depguard
    - dupl
    - funlen
    - gochecknoglobals
    - gochecknoinits
    - gocognit
    - goconst
    - gocyclo
    - godox
    - interfacer
    - maligned
    - nakedret
    - prealloc
    - scopelint
    - whitespace
    - wsl
  fast: false

linters-settings:
  errcheck:
    # report about not checking of errors in type assetions: `a := b.(MyStruct)`;
    # default is false: such cases aren't reported by default.
    check-type-assertions: false

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

  govet:
    # report about shadowed variables
    check-shadowing: false
  golint:
    # minimal confidence for issues, default is 0.8
    min-confidence: 0.8
  gofmt:
    # simplify code: gofmt with `-s` option, true by default
    simplify: true
  misspell:
    # Correct spellings using locale preferences for US or UK.
    # Default is to use a neutral variety of English.
    # Setting locale to US will correct the British spelling of 'colour' to 'color'.
    locale: US
  lll:
    # max line length, lines longer will be reported. Default is 120.
    # '\t' is counted as 1 character by default, and can be changed with the tab-width option
    line-length: 160
    # tab width in spaces. Default to 1.
    tab-width: 1
  unused:
    # treat code as a program (not a library) and report unused exported identifiers; default is false.
    # XXX: if you enable this setting, unused will report a lot of false-positives in text editors:
    # if it's called for subdir of a project it can't find funcs usages. All text editor integrations
    # with golangci-lint call it on a directory with the changed file.
    check-exported: false
  unparam:
    # call graph construction algorithm (cha, rta). In general, use cha for libraries,
    # and rta for programs with main packages. Default is cha.
    algo: cha

    # Inspect exported functions, default is false. Set to true if no external program/library imports your code.
    # XXX: if you enable this setting, unparam will report a lot of false-positives in text editors:
    # if it's called for subdir of a project it can't find external interfaces. All text editor integrations
    # with golangci-lint call it on a directory with the changed file.
    check-exported: false
  gocritic:
    enabled-checks:
      - appendCombine
      - argOrder
      - assignOp
      - badCond
      - boolExprSimplify
      - builtinShadow
      - captLocal
      - caseOrder
      - codegenComment
      - commentedOutCode
      - commentedOutImport
      - defaultCaseOrder
      - deprecatedComment
      - docStub
      - dupArg
      - dupBranchBody
      - dupCase
      - dupSubExpr
      - elseif
      - emptyFallthrough
      - equalFold
      - flagDeref
      - flagName
      - hexLiteral
      - indexAlloc
      - initClause
      - methodExprCall
      - nilValReturn
      - octalLiteral
      - offBy1
      - rangeExprCopy
      - regexpMust
      - sloppyLen
      - stringXbytes
      - switchTrue
      - typeAssertChain
      - typeSwitchVar
      - typeUnparen
      - underef
      - unlambda
      - unnecessaryBlock
      - unslice
      - valSwap
      - weakCond
      - yodaStyleExpr

      # Unused
      # - appendAssign
      # - commentFormatting
      # - emptyStringTest
      # - exitAfterDefer
      # - ifElseChain
      # - hugeParam
      # - importShadow
      # - nestingReduce
      # - paramTypeCombine
      # - ptrToRefParam
      # - rangeValCopy
      # - singleCaseSwitch
      # - sloppyReassign
      # - unlabelStmt
      # - unnamedResult
      # - wrapperFunc

issues:
  # List of regexps of issue texts to exclude, empty list by default.
  # But independently from this option we use default exclude patterns,
  # it can be disabled by `exclude-use-default: false`. To list all
  # excluded by default patterns execute `golangci-lint run --help`
  exclude:
    ## Defaults we want from golangci-lint
    # errcheck: Almost all programs ignore errors on these functions and in most cases it's ok
    - Error return value of .((os\.)?std(out|err)\..*|.*Close|.*Flush|os\.Remove(All)?|.*printf?|os\.(Un)?Setenv). is not checked
    # golint: False positive when tests are defined in package 'test'
    - func name will be used as test\.Test.* by other packages, and that stutters; consider calling this
    # govet: Common false positives
    - (possible misuse of unsafe.Pointer|should have signature)
    # staticcheck: Developers tend to write in C-style with an explicit 'break' in a 'switch', so it's ok to ignore
    - ineffective break statement. Did you mean to break out of the outer loop
    # gosec: Too many false-positives on 'unsafe' usage
    - Use of unsafe calls should be audited
    # gosec: Too many false-positives for parametrized shell calls
    - Subprocess launch(ed with variable|ing should be audited)
    # gosec: Duplicated errcheck checks
    - G104
    # gosec: Too many issues in popular repos
    - (Expect directory permissions to be 0750 or less|Expect file permissions to be 0600 or less)
    # gosec: False positive is triggered by 'src, err := ioutil.ReadFile(filename)'
    - Potential file inclusion via variable

    ##
    ## Custom
    ##
    # Mostly harmless buffer writes where we skip error checking
    # https://golang.org/pkg/bytes/#Buffer.Write
    - "Error return value of `w.Write` is not checked"
    - "Error return value of `io.WriteString` is not checked"
    - "Error return value of `viper.BindEnv` is not checked"
    - "Error return value of `h.Write` is not checked"
    - "ExecuteTemplate` is not checked"

    # go sec : we want to allow skipping tls auth
    - "TLS InsecureSkipVerify set true."
    - "goroutine calls T.Fatalf, which must be called in the same goroutine as the test"
    # good job Protobuffs!
    - "method XXX"
    - "SA1019"

  exclude-rules:
    # Exclude some linters from running on test files.
    - path: _test\.go$|^tests/|^samples/|templates\.go$
      linters:
        - errcheck
        - maligned
        - lll
        - gosec
        - bodyclose
        - unparam
    # erroneously thinks google api url is a cred
    - path: internal/identity/google.go
      text: "Potential hardcoded credentials"
      linters:
        - gosec
    # deprecated but every example still uses New
    - path: internal/identity/google.go
      text: "please use NewService instead"
      linters:
        - staticcheck

  # Independently from option `exclude` we use default exclude patterns,
  # it can be disabled by this option. To list all
  # excluded by default patterns execute `golangci-lint run --help`.
  # Default value for this option is true.
  exclude-use-default: false

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

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