Enable safe linters (#1786)

* Enable safe linters

Enable the linters dogsled, rowserrcheck, and sqlclosecheck.

These report no errors currently in the code base.

Enable misspell.

Misspell finds two spelling mistakes in comments, which are fixed by the
patch as well.

Add and sort linters which are relatively
safe to add over time. Comment them out for now.

* Close the response body

If we can get a HTTP response, it has a body which ought to be closed.

By doing so, we avoid potentially leaking connections.

* Enable the exportloopref linter

There are two places in the code with these warnings. Fix them while
enabling the linter.

* Remove redundant types in tests

If a slice already determines the type, the inner type declaration is
redundant. Remove the inner declarations.

* Mark autotag test cases as parallel

Autotag test cases is by far the outlier when it comes to test time.
While go test runs test cases in parallel,
it doesn't do so inside a given package, unless one marks the test cases
as parallel.

This change provides a significant speedup on a 8-core machine for test
runs.

.golangci.yml

@@ -18,8 +18,24 @@ linters:
     - unused
     - varcheck
     # Linters added by the stash project
+    # - bodyclose
+    - dogsled
+    # - errorlint
+    # - exhaustive
+    - exportloopref
+    # - goconst
+    # - gocritic
+    # - goerr113
     - gofmt
+    # - gosec
+    # - ifshort
+    - misspell
+    # - nakedret
+    # - noctx
+    # - paralleltest
     - revive
+    - rowserrcheck
+    - sqlclosecheck
 
 linters-settings:
   gofmt:
@@ -63,5 +79,4 @@ linters-settings:
       - name: unused-parameter
         disabled: true
       - name: unreachable-code
-      - name: redefines-builtin-id
-
+      - name: redefines-builtin-id

pkg/autotag/gallery_test.go

@@ -12,6 +12,8 @@ import (
 const galleryExt = "zip"
 
 func TestGalleryPerformers(t *testing.T) {
+	t.Parallel()
+
 	const galleryID = 1
 	const performerName = "performer name"
 	const performerID = 2
@@ -55,6 +57,8 @@ func TestGalleryPerformers(t *testing.T) {
 }
 
 func TestGalleryStudios(t *testing.T) {
+	t.Parallel()
+
 	const galleryID = 1
 	const studioName = "studio name"
 	const studioID = 2
@@ -124,6 +128,8 @@ func TestGalleryStudios(t *testing.T) {
 }
 
 func TestGalleryTags(t *testing.T) {
+	t.Parallel()
+
 	const galleryID = 1
 	const tagName = "tag name"
 	const tagID = 2

pkg/autotag/image_test.go

@@ -12,6 +12,8 @@ import (
 const imageExt = "jpg"
 
 func TestImagePerformers(t *testing.T) {
+	t.Parallel()
+
 	const imageID = 1
 	const performerName = "performer name"
 	const performerID = 2
@@ -55,6 +57,8 @@ func TestImagePerformers(t *testing.T) {
 }
 
 func TestImageStudios(t *testing.T) {
+	t.Parallel()
+
 	const imageID = 1
 	const studioName = "studio name"
 	const studioID = 2
@@ -124,6 +128,8 @@ func TestImageStudios(t *testing.T) {
 }
 
 func TestImageTags(t *testing.T) {
+	t.Parallel()
+
 	const imageID = 1
 	const tagName = "tag name"
 	const tagID = 2

pkg/autotag/performer_test.go

@@ -9,6 +9,8 @@ import (
 )
 
 func TestPerformerScenes(t *testing.T) {
+	t.Parallel()
+
 	type test struct {
 		performerName string
 		expectedRegex string
@@ -85,6 +87,8 @@ func testPerformerScenes(t *testing.T, performerName, expectedRegex string) {
 }
 
 func TestPerformerImages(t *testing.T) {
+	t.Parallel()
+
 	type test struct {
 		performerName string
 		expectedRegex string
@@ -157,6 +161,8 @@ func testPerformerImages(t *testing.T, performerName, expectedRegex string) {
 }
 
 func TestPerformerGalleries(t *testing.T) {
+	t.Parallel()
+
 	type test struct {
 		performerName string
 		expectedRegex string

pkg/autotag/scene_test.go

@@ -145,6 +145,8 @@ func generateTestTable(testName, ext string) []pathTestTable {
 }
 
 func TestScenePerformers(t *testing.T) {
+	t.Parallel()
+
 	const sceneID = 1
 	const performerName = "performer name"
 	const performerID = 2
@@ -188,6 +190,8 @@ func TestScenePerformers(t *testing.T) {
 }
 
 func TestSceneStudios(t *testing.T) {
+	t.Parallel()
+
 	const sceneID = 1
 	const studioName = "studio name"
 	const studioID = 2
@@ -257,6 +261,8 @@ func TestSceneStudios(t *testing.T) {
 }
 
 func TestSceneTags(t *testing.T) {
+	t.Parallel()
+
 	const sceneID = 1
 	const tagName = "tag name"
 	const tagID = 2

pkg/autotag/studio_test.go

@@ -55,6 +55,8 @@ var testStudioCases = []testStudioCase{
 }
 
 func TestStudioScenes(t *testing.T) {
+	t.Parallel()
+
 	for _, p := range testStudioCases {
 		testStudioScenes(t, p)
 	}
@@ -145,6 +147,8 @@ func testStudioScenes(t *testing.T, tc testStudioCase) {
 }
 
 func TestStudioImages(t *testing.T) {
+	t.Parallel()
+
 	for _, p := range testStudioCases {
 		testStudioImages(t, p)
 	}
@@ -234,6 +238,8 @@ func testStudioImages(t *testing.T, tc testStudioCase) {
 }
 
 func TestStudioGalleries(t *testing.T) {
+	t.Parallel()
+
 	for _, p := range testStudioCases {
 		testStudioGalleries(t, p)
 	}

pkg/autotag/tag_test.go

@@ -55,6 +55,8 @@ var testTagCases = []testTagCase{
 }
 
 func TestTagScenes(t *testing.T) {
+	t.Parallel()
+
 	for _, p := range testTagCases {
 		testTagScenes(t, p)
 	}
@@ -141,6 +143,8 @@ func testTagScenes(t *testing.T, tc testTagCase) {
 }
 
 func TestTagImages(t *testing.T) {
+	t.Parallel()
+
 	for _, p := range testTagCases {
 		testTagImages(t, p)
 	}
@@ -226,6 +230,8 @@ func testTagImages(t *testing.T, tc testTagCase) {
 }
 
 func TestTagGalleries(t *testing.T) {
+	t.Parallel()
+
 	for _, p := range testTagCases {
 		testTagGalleries(t, p)
 	}

pkg/logger/plugin.go

@@ -112,6 +112,7 @@ func DetectLogLevel(line string) (*PluginLogLevel, string) {
 	var level *PluginLogLevel
 	for _, l := range validLevels {
 		if l.char == char {
+			l := l // Make a copy of the loop variable
 			level = &l
 			break
 		}

pkg/manager/manager_tasks.go

@@ -251,7 +251,7 @@ func (s *singleton) Generate(ctx context.Context, input models.GenerateMetadataI
 		// Start measuring how long the generate has taken. (consider moving this up)
 		start := time.Now()
 		if err = instance.Paths.Generated.EnsureTmpDir(); err != nil {
-			logger.Warnf("could not create temprary directory: %v", err)
+			logger.Warnf("could not create temporary directory: %v", err)
 		}
 
 		for _, scene := range scenes {

pkg/movie/export_test.go

@@ -148,32 +148,32 @@ var scenarios []testScenario
 
 func initTestTable() {
 	scenarios = []testScenario{
-		testScenario{
+		{
 			createFullMovie(movieID, studioID),
 			createFullJSONMovie(studioName, frontImage, backImage),
 			false,
 		},
-		testScenario{
+		{
 			createEmptyMovie(emptyID),
 			createEmptyJSONMovie(),
 			false,
 		},
-		testScenario{
+		{
 			createFullMovie(errFrontImageID, studioID),
 			nil,
 			true,
 		},
-		testScenario{
+		{
 			createFullMovie(errBackImageID, studioID),
 			nil,
 			true,
 		},
-		testScenario{
+		{
 			createFullMovie(errStudioMovieID, errStudioID),
 			nil,
 			true,
 		},
-		testScenario{
+		{
 			createFullMovie(missingStudioMovieID, missingStudioID),
 			createFullJSONMovie("", frontImage, backImage),
 			false,

pkg/performer/export_test.go

@@ -168,17 +168,17 @@ var scenarios []testScenario
 
 func initTestTable() {
 	scenarios = []testScenario{
-		testScenario{
+		{
 			*createFullPerformer(performerID, performerName),
 			createFullJSONPerformer(performerName, image),
 			false,
 		},
-		testScenario{
+		{
 			createEmptyPerformer(noImageID),
 			createEmptyJSONPerformer(),
 			false,
 		},
-		testScenario{
+		{
 			*createFullPerformer(errImageID, performerName),
 			nil,
 			true,

pkg/plugin/args.go

@@ -17,6 +17,7 @@ func findArg(args []*models.PluginArgInput, name string) *models.PluginArgInput
 func applyDefaultArgs(args []*models.PluginArgInput, defaultArgs map[string]string) []*models.PluginArgInput {
 	for k, v := range defaultArgs {
 		if arg := findArg(args, k); arg == nil {
+			v := v // Copy v, because it's being exported out of the loop
 			args = append(args, &models.PluginArgInput{
 				Key: k,
 				Value: &models.PluginValueInput{

pkg/scraper/url.go

@@ -223,6 +223,7 @@ func getRemoteCDPWSAddress(address string) (string, error) {
 	if err != nil {
 		return "", err
 	}
+	defer resp.Body.Close()
 
 	var result map[string]interface{}
 	var json = jsoniter.ConfigCompatibleWithStandardLibrary

pkg/scraper/xpath_test.go

@@ -53,9 +53,9 @@ const htmlDoc1 = `
 								<b>Country of Origin:</b>
 							</td>
 							<td class="paramvalue">
-								
+
 								<span class="country-us">
-								
+
 									United States
 								<span>
 							</span></span></td>
@@ -661,7 +661,7 @@ func verifyPerformers(t *testing.T, expectedNames []string, expectedURLs []strin
 			t.Errorf("Expected performer name %s, got %s", expectedName, actualName)
 		}
 		if expectedURL != actualURL {
-			t.Errorf("Expected perfromer URL %s, got %s", expectedName, actualName)
+			t.Errorf("Expected performer URL %s, got %s", expectedName, actualName)
 		}
 		i++
 	}
@@ -741,7 +741,7 @@ func TestLoadXPathScraperFromYAML(t *testing.T) {
 	const yamlStr = `name: Test
 performerByURL:
   - action: scrapeXPath
-    url: 
+    url:
       - test.com
     scraper: performerScraper
 xPathScrapers:
@@ -755,11 +755,11 @@ xPathScrapers:
         postProcess:
           - parseDate: January 2, 2006
       Tags:
-        Name: //tags  
+        Name: //tags
       Movies:
-        Name: //movies  
+        Name: //movies
       Performers:
-        Name: //performers  
+        Name: //performers
       Studio:
         Name: //studio
 `
@@ -848,13 +848,13 @@ func TestSubScrape(t *testing.T) {
 	yamlStr := `name: Test
 performerByURL:
   - action: scrapeXPath
-    url: 
+    url:
       - ` + ts.URL + `
     scraper: performerScraper
 xPathScrapers:
   performerScraper:
     performer:
-      Name: 
+      Name:
         selector: //div/a/@href
         postProcess:
           - replace:

pkg/studio/export_test.go

@@ -119,32 +119,32 @@ var scenarios []testScenario
 
 func initTestTable() {
 	scenarios = []testScenario{
-		testScenario{
+		{
 			createFullStudio(studioID, parentStudioID),
 			createFullJSONStudio(parentStudioName, image, []string{"alias"}),
 			false,
 		},
-		testScenario{
+		{
 			createEmptyStudio(noImageID),
 			createEmptyJSONStudio(),
 			false,
 		},
-		testScenario{
+		{
 			createFullStudio(errImageID, parentStudioID),
 			nil,
 			true,
 		},
-		testScenario{
+		{
 			createFullStudio(missingParentStudioID, missingStudioID),
 			createFullJSONStudio("", image, nil),
 			false,
 		},
-		testScenario{
+		{
 			createFullStudio(errStudioID, errParentStudioID),
 			nil,
 			true,
 		},
-		testScenario{
+		{
 			createFullStudio(errAliasID, parentStudioID),
 			nil,
 			true,