# Copyright (c) HashiCorp, Inc.
# SPDX-License-Identifier: BUSL-1.1

linters:
  disable-all: true
  enable:
    - gofmt
    - govet
    - unconvert
    - staticcheck
    - ineffassign
    - unparam
    - forbidigo
    - gomodguard
    - depguard

issues:
  # Disable the default exclude list so that all excludes are explicitly
  # defined in this file.
  exclude-use-default: false

  exclude-rules:
    # Temp Ignore SA9004: only the first constant in this group has an explicit type
    # https://staticcheck.io/docs/checks#SA9004
    - linters: [staticcheck]
      text: "SA9004:"

    - linters: [staticcheck]
      text: 'SA1019: "io/ioutil" has been deprecated since Go 1.16'

    # Allow usage of deprecated values.
    - linters: [ staticcheck ]
      text: 'SA1019:'
      path: "(agent/grpc-external|agent/grpc-internal)"

    # An argument that always receives the same value is often not a problem.
    - linters: [unparam]
      text: "always receives"

    # Often functions will implement an interface that returns an error without
    # needing to return an error. Sometimes the error return value is unnecessary
    # but a linter can not tell the difference.
    - linters: [unparam]
      text: 'result \d+ \(error\) is always nil'

    # Allow unused parameters to start with an underscore. Arguments with a name
    # of '_' are already ignored.
    # Ignoring longer names that start with underscore allow for better
    # self-documentation than a single underscore by itself.  Underscore arguments
    # should generally only be used when a function is implementing an interface.
    - linters: [unparam]
      text: "`_[^`]*` is unused"

    # Temp ignore some common unused parameters so that unparam can be added
    # incrementally.
    - linters: [unparam]
      text: "`(t|resp|req|entMeta)` is unused"

    # Temp ignore everything in _ce(_test).go and _ent(_test).go. Many of these
    # could use underscore to ignore the unused arguments, but the "always returns"
    # issue will likely remain in CE, and will need to be excluded.
    - linters: [unparam]
      path: "(_ce.go|_ce_test.go|_ent.go|_ent_test.go)"

linters-settings:
  govet:
    check-shadowing: true
    enable-all: true
    disable:
      - fieldalignment
      - nilness
      - shadow
      - unusedwrite
  gofmt:
    simplify: true
  forbidigo:
    # Forbid the following identifiers (list of regexp).
    # Format includes custom message based on https://github.com/ashanbrown/forbidigo/pull/11
    forbid:
      - '\bhtml\/template\b(# Use text/template instead)?'
      - '\bioutil\b(# Use io and os packages instead of ioutil)?'
      - '\brequire\.New\b(# Use package-level functions with explicit TestingT)?'
      - '\bassert\.New\b(# Use package-level functions with explicit TestingT)?'
    # Exclude godoc examples from forbidigo checks.
    # Default: true
    exclude_godoc_examples: false
  gomodguard:
    blocked:
      # List of blocked modules.
      modules:
        # Blocked module.
        - github.com/hashicorp/net-rpc-msgpackrpc:
            recommendations:
              - github.com/hashicorp/consul-net-rpc/net-rpc-msgpackrpc
        - github.com/hashicorp/go-msgpack:
            recommendations:
              - github.com/hashicorp/consul-net-rpc/go-msgpack
        - github.com/golang/protobuf:
            recommendations:
              - google.golang.org/protobuf

  depguard:
    rules:
      main:
        listMode: lax
        deny:
        - pkg: net/rpc
          desc: "only use forked copy in github.com/hashicorp/consul-net-rpc/net/rpc"
        - pkg: github.com/golang/protobuf
          desc: "only use google.golang.org/protobuf"

run:
  timeout: 10m
  concurrency: 4
  skip-dirs-use-default: false