Merge pull request #13679 from mjtrangoni/fix-megacheck-issues

Fix megacheck issues

pkg/login/ldap.go

@@ -185,7 +185,7 @@ func (a *ldapAuther) GetGrafanaUserFor(ctx *m.ReqContext, ldapUser *LdapUserInfo
 
 		if ldapUser.isMemberOf(group.GroupDN) {
 			extUser.OrgRoles[group.OrgId] = group.OrgRole
-			if extUser.IsGrafanaAdmin == nil || *extUser.IsGrafanaAdmin == false {
+			if extUser.IsGrafanaAdmin == nil || !*extUser.IsGrafanaAdmin {
 				extUser.IsGrafanaAdmin = group.IsGrafanaAdmin
 			}
 		}

pkg/middleware/middleware.go

@@ -43,12 +43,13 @@ func GetContextHandler() macaron.Handler {
 		// then init session and look for userId in session
 		// then look for api key in session (special case for render calls via api)
 		// then test if anonymous access is enabled
-		if initContextWithRenderAuth(ctx) ||
-			initContextWithApiKey(ctx) ||
-			initContextWithBasicAuth(ctx, orgId) ||
-			initContextWithAuthProxy(ctx, orgId) ||
-			initContextWithUserSessionCookie(ctx, orgId) ||
-			initContextWithAnonymousUser(ctx) {
+		switch {
+		case initContextWithRenderAuth(ctx):
+		case initContextWithApiKey(ctx):
+		case initContextWithBasicAuth(ctx, orgId):
+		case initContextWithAuthProxy(ctx, orgId):
+		case initContextWithUserSessionCookie(ctx, orgId):
+		case initContextWithAnonymousUser(ctx):
 		}
 
 		ctx.Logger = log.New("context", "userId", ctx.UserId, "orgId", ctx.OrgId, "uname", ctx.Login)

pkg/plugins/plugins.go

@@ -121,7 +121,6 @@ func (pm *PluginManager) Run(ctx context.Context) error {
 			pm.checkForUpdates()
 		case <-ctx.Done():
 			run = false
-			break
 		}
 	}
 

pkg/services/alerting/reader.go

@@ -34,11 +34,8 @@ func NewRuleReader() *DefaultRuleReader {
 func (arr *DefaultRuleReader) initReader() {
 	heartbeat := time.NewTicker(time.Second * 10)
 
-	for {
-		select {
-		case <-heartbeat.C:
-			arr.heartbeat()
-		}
+	for range heartbeat.C {
+		arr.heartbeat()
 	}
 }
 

pkg/tsdb/graphite/graphite.go

@@ -164,14 +164,12 @@ func formatTimeRange(input string) string {
 
 func fixIntervalFormat(target string) string {
 	rMinute := regexp.MustCompile(`'(\d+)m'`)
-	rMin := regexp.MustCompile("m")
 	target = rMinute.ReplaceAllStringFunc(target, func(m string) string {
-		return rMin.ReplaceAllString(m, "min")
+		return strings.Replace(m, "m", "min", -1)
 	})
 	rMonth := regexp.MustCompile(`'(\d+)M'`)
-	rMon := regexp.MustCompile("M")
 	target = rMonth.ReplaceAllStringFunc(target, func(M string) string {
-		return rMon.ReplaceAllString(M, "mon")
+		return strings.Replace(M, "M", "mon", -1)
 	})
 	return target
 }

pkg/tsdb/stackdriver/stackdriver.go

@@ -186,8 +186,7 @@ func reverse(s string) string {
 }
 
 func interpolateFilterWildcards(value string) string {
-	re := regexp.MustCompile("[*]")
-	matches := len(re.FindAllStringIndex(value, -1))
+	matches := strings.Count(value, "*")
 	if matches == 2 && strings.HasSuffix(value, "*") && strings.HasPrefix(value, "*") {
 		value = strings.Replace(value, "*", "", -1)
 		value = fmt.Sprintf(`has_substring("%s")`, value)