feat: introduce linter to run on PR builds

.github/workflows/golangci_lint.yaml

@@ -0,0 +1,20 @@
+name: Run golangci-lint
+
+on:
+  pull_request:
+    branches: [main]
+
+jobs:
+  golangci-lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
+
+      - name: golangci-lint
+        uses: reviewdog/action-golangci-lint@7708105983c614f7a2725e2172908b7709d1c3e4 # v2
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          reporter: github-pr-check
+          golangci_lint_flags: "--timeout=240s"
+          level: warning

.golangci.yml

@@ -0,0 +1,141 @@
+---
+run:
+  concurrency: 6
+linters:
+  disable-all: true
+  enable:
+    # - depguard
+    - gofmt
+    - goimports
+    - govet
+    - ineffassign
+    - misspell
+    - nakedret
+    - prealloc
+    - typecheck
+    # - asciicheck
+    # - bodyclose
+    # - dogsled
+    # - dupl
+    # - errcheck
+    # - errorlint
+    # - exhaustive
+    # - exhaustivestruct
+    # - exportloopref
+    # - funlen
+    # - gci
+    # - gochecknoglobals
+    # - gochecknoinits
+    # - gocognit
+    # - goconst
+    # - gocritic
+    # - gocyclo
+    # - godot
+    # - godox
+    # - goerr113
+    # - gofumpt
+    # - goheader
+    # - golint
+    # - gomnd
+    # - gomodguard
+    # - goprintffuncname
+    # - gosec (gas)
+    - gosimple  # (megacheck)
+    # - interfacer
+    # - lll
+    # - maligned
+    # - nestif
+    # - nlreturn
+    # - noctx
+    # - nolintlint
+    - revive
+    # - rowserrcheck
+    # - scopelint
+    # - sqlclosecheck
+    - staticcheck
+    - stylecheck
+    # - testpackage
+    # - tparallel
+    - unconvert
+    # - unparam
+    - unused
+    # - whitespace
+    # - wrapcheck
+    # - wsl
+linters-settings:
+  gocritic:
+    enabled-checks:
+      # Diagnostic
+      - appendAssign
+      - argOrder
+      - badCond
+      - caseOrder
+      - codegenComment
+      - commentedOutCode
+      - deprecatedComment
+      - dupArg
+      - dupBranchBody
+      - dupCase
+      - dupSubExpr
+      - exitAfterDefer
+      - flagDeref
+      - flagName
+      - nilValReturn
+      - offBy1
+      - sloppyReassign
+      - weakCond
+      - octalLiteral
+
+      # Performance
+      - appendCombine
+      - equalFold
+      - hugeParam
+      - indexAlloc
+      - rangeExprCopy
+      - rangeValCopy
+
+      # Style
+      - assignOp
+      - boolExprSimplify
+      - captLocal
+      - commentFormatting
+      - commentedOutImport
+      - defaultCaseOrder
+      - docStub
+      - elseif
+      - emptyFallthrough
+      - emptyStringTest
+      - hexLiteral
+      - ifElseChain
+      - methodExprCall
+      - regexpMust
+      - singleCaseSwitch
+      - sloppyLen
+      - stringXbytes
+      - switchTrue
+      - typeAssertChain
+      - typeSwitchVar
+      - underef
+      - unlabelStmt
+      - unlambda
+      - unslice
+      - valSwap
+      - wrapperFunc
+      - yodaStyleExpr
+
+      # Opinionated
+      - builtinShadow
+      - importShadow
+      - initClause
+      - nestingReduce
+      - paramTypeCombine
+      - ptrToRefParam
+      - typeUnparen
+      - unnamedResult
+      - unnecessaryBlock
+
+issues:
+  exclude-rules:
+    - linters:
+        - revive
+      text: "unused-parameter"

Makefile

@@ -54,6 +54,11 @@ fmt: ## Run go fmt against code.
 vet: ## Run go vet against code.
 	go vet ./...
 
+## lint: Run go lint against code.
+.PHONY: lint
+lint:
+	@golangci-lint run -v --timeout=5m ./...
+
 .PHONY: test
 test: manifests generate fmt vet envtest ## Run tests.
 	KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(ENVTEST_K8S_VERSION) --bin-dir $(LOCALBIN) -p path)" go test ./... -coverprofile cover.out

controllers/analysis_step.go

@@ -72,7 +72,7 @@ func (step *AnalysisStep) execute(instance *K8sGPTInstance) (ctrl.Result, error)
 	}
 
 	// Prior to creating or updating any results we will delete any stale results that
-	// no longer are relevent, we can do this by using the resultSpec composed name against
+	// no longer are relevant, we can do this by using the resultSpec composed name against
 	// the custom resource name
 	err = step.cleanUpStaleResults(rawResults, instance)
 	if err != nil {