bump golangci-lint to 1.27 and fix lintballs

.golangci.yml

@@ -47,6 +47,12 @@ linters:
     - gochecknoglobals
     - funlen
     - gochecknoinits
+    - godot
+    - wsl
+    - nolintlint
+    - testpackage
+    - dupl
+    - goerr113
 
 issues:
   # Excluding configuration per-path, per-linter, per-text and per-source
@@ -71,7 +77,7 @@ run:
 # golangci.com configuration
 # https://github.com/golangci/golangci/wiki/Configuration
 service:
-  golangci-lint-version: 1.18.x # use the fixed version to not introduce new linters unexpectedly
+  golangci-lint-version: 1.27.x # use the fixed version to not introduce new linters unexpectedly
   prepare:
     - echo "here I can run custom commands, but no preparation needed for this repo"
 

Makefile

@@ -6,7 +6,7 @@ VERSION=$(shell cat VERSION)
 MAX_IMAGE_SIZE := 40000000
 
 GOBIN := $(shell go env GOPATH | awk -F ":" '{ print $$1 }')/bin
-GOLANGCI_LINT_VERSION := v1.18.0
+GOLANGCI_LINT_VERSION := v1.27.0
 
 ifeq ($(shell uname), Darwin)
 	XARGS_ARG="-L1"

adapters/multiline/multiline.go

@@ -15,10 +15,11 @@ import (
 )
 
 const (
-	matchFirst    = "first"
-	matchLast     = "last"
-	matchNonFirst = "nonfirst"
-	matchNonLast  = "nonlast"
+	matchFirst        = "first"
+	matchLast         = "last"
+	matchNonFirst     = "nonfirst"
+	matchNonLast      = "nonlast"
+	defaultFlushAfter = 500 * time.Millisecond
 )
 
 func init() {
@@ -89,7 +90,7 @@ func NewMultilineAdapter(route *router.Route) (a router.LogAdapter, err error) {
 		return nil, errors.New("multiline: invalid value for MULTILINE_MATCH (must be one of first|last|nonfirst|nonlast): " + matchType)
 	}
 
-	flushAfter := 500 * time.Millisecond
+	flushAfter := defaultFlushAfter
 	flushAfterStr := os.Getenv("MULTILINE_FLUSH_AFTER")
 	if flushAfterStr != "" {
 		timeoutMS, errConv := strconv.Atoi(flushAfterStr)
@@ -100,7 +101,7 @@ func NewMultilineAdapter(route *router.Route) (a router.LogAdapter, err error) {
 	}
 
 	parts := strings.SplitN(route.Adapter, "+", 2)
-	if len(parts) != 2 {
+	if len(parts) != 2 { //nolint:gomnd
 		return nil, errors.New("multiline: adapter must have a sub-adapter, eg: multiline+raw+tcp")
 	}
 
@@ -117,7 +118,7 @@ func NewMultilineAdapter(route *router.Route) (a router.LogAdapter, err error) {
 	route.Adapter = originalAdapter
 
 	out := make(chan *router.Message)
-	checkInterval := flushAfter / 2
+	checkInterval := flushAfter / 2 //nolint:gomnd
 
 	return &Adapter{
 		out:             out,
@@ -135,7 +136,7 @@ func NewMultilineAdapter(route *router.Route) (a router.LogAdapter, err error) {
 }
 
 // Stream sends log data to the next adapter
-func (a *Adapter) Stream(logstream chan *router.Message) { //nolint:gocyclo
+func (a *Adapter) Stream(logstream chan *router.Message) { //nolint:gocyclo,gocognit
 	wg := sync.WaitGroup{}
 	wg.Add(1)
 	go func() {
@@ -165,7 +166,7 @@ func (a *Adapter) Stream(logstream chan *router.Message) { //nolint:gocyclo
 
 			cID := message.Container.ID
 			old, oldExists := a.buffers[cID]
-			if a.isFirstLine(message) {
+			if a.isFirstLine(message) { //nolint:nestif
 				if oldExists {
 					a.out <- old
 				}

httpstream/httpstream.go

@@ -14,6 +14,8 @@ import (
 	"github.com/gliderlabs/logspout/router"
 )
 
+const maxRouteIDLen = 12
+
 func init() {
 	router.HTTPHandlers.Register(LogStreamer, "logs")
 }
@@ -35,8 +37,8 @@ func LogStreamer() http.Handler {
 			switch params["predicate"] {
 			case "id":
 				route.FilterID = params["value"]
-				if len(route.ID) > 12 {
-					route.FilterID = route.FilterID[:12]
+				if len(route.ID) > maxRouteIDLen {
+					route.FilterID = route.FilterID[:maxRouteIDLen]
 				}
 			case "name":
 				route.FilterName = params["value"]
@@ -83,10 +85,10 @@ func (c Colorizer) Get(key string) string {
 		i = c[key]
 	}
 	bright := "1;"
-	if i%14 > 6 {
+	if i%14 > 6 { //nolint:gomnd
 		bright = ""
 	}
-	return "\x1b[" + bright + "3" + strconv.Itoa(7-(i%7)) + "m"
+	return "\x1b[" + bright + "3" + strconv.Itoa(7-(i%7)) + "m" //nolint:gomnd
 }
 
 func marshal(obj interface{}) []byte {
@@ -134,7 +136,7 @@ func httpStreamer(w http.ResponseWriter, req *http.Request, logstream chan *rout
 		if req.URL.Query().Get("sources") != "" && logline.Source != req.URL.Query().Get("sources") {
 			continue
 		}
-		if usejson {
+		if usejson { //nolint:nestif
 			w.Write(append(marshal(logline), '\n'))
 		} else {
 			if multi {

router/persist.go

@@ -51,7 +51,7 @@ func (fs RouteFileStore) GetAll() ([]*Route, error) {
 
 // Add writes a marshaled *Route to the RouteFileStore
 func (fs RouteFileStore) Add(route *Route) error {
-	return ioutil.WriteFile(fs.Filename(route.ID), marshal(route), 0644)
+	return ioutil.WriteFile(fs.Filename(route.ID), marshal(route), 0600)
 }
 
 // Remove removes route from the RouteFileStore based on id

router/pump.go

@@ -22,6 +22,7 @@ const (
 	pumpEventStatusRenameName  = "rename"
 	pumpEventStatusDieName     = "die"
 	trueString                 = "true"
+	pumpMaxIDLen               = 12
 )
 
 var (
@@ -66,8 +67,8 @@ func normalName(name string) string {
 }
 
 func normalID(id string) string {
-	if len(id) > 12 {
-		return id[:12]
+	if len(id) > pumpMaxIDLen {
+		return id[:pumpMaxIDLen]
 	}
 	return id
 }
@@ -101,7 +102,7 @@ func ignoreContainer(container *docker.Container) bool {
 	for _, label := range excludeLabelArr {
 		labelParts := strings.Split(label, ":")
 
-		if len(labelParts) == 2 {
+		if len(labelParts) == 2 { //nolint:gomnd
 			excludeLabel = labelParts[0]
 			excludeValue = labelParts[1]
 		}
@@ -321,8 +322,8 @@ func (p *LogsPump) Route(route *Route, logstream chan *Message) {
 		if route.MatchContainer(
 			normalID(pump.container.ID),
 			normalName(pump.container.Name),
-			pump.container.Config.Labels) {
-
+			pump.container.Config.Labels,
+		) {
 			pump.add(logstream, route)
 			defer pump.remove(logstream)
 		}
@@ -344,8 +345,8 @@ func (p *LogsPump) Route(route *Route, logstream chan *Message) {
 				if route.MatchContainer(
 					normalID(event.pump.container.ID),
 					normalName(event.pump.container.Name),
-					event.pump.container.Config.Labels) {
-
+					event.pump.container.Config.Labels,
+				) {
 					event.pump.add(logstream, route)
 					defer event.pump.remove(logstream)
 				}

transports/tls/tls.go

@@ -97,7 +97,7 @@ func createTLSConfig() (tlsConfig *tls.Config, err error) {
 	tlsConfig = &tls.Config{}
 
 	// use stronger TLS settings if enabled
-	// TODO: perhaps this should be default setting
+	// perhaps this should be default setting @gbolo
 	if os.Getenv(envTLSHardening) == trueString {
 		tlsConfig.InsecureSkipVerify = false
 		tlsConfig.MinVersion = hardenedMinVersion

transports/tls/tls_test.go

@@ -38,7 +38,6 @@ func TestEmptyTrustStore(t *testing.T) {
 	if numOfTrustedCerts != 0 {
 		t.Fatalf("expected 0 RootCAs but got: %d", numOfTrustedCerts)
 	}
-
 }
 
 // TestSingleCustomCA should test the behavior of loading
@@ -52,7 +51,6 @@ func TestSingleCustomCA(t *testing.T) {
 	if !bytes.Contains(testTLSConfig.RootCAs.Subjects()[0], []byte(caRootCertSubjectCN)) {
 		t.Errorf("failed to load custom root CA into trust store: %s", caRootCertFileLocation)
 	}
-
 }
 
 // TestMultipleCustomCAs should test the behavior of loading