Bump Go Version in build and golangci

.github/workflows/build.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: 1.21
+          go-version: 1.23
 
       - name: Test
         run: go test -v ./...

.github/workflows/golangci-lint.yml

@@ -17,4 +17,4 @@ jobs:
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v6
         with:
-          version: v1.54
+          version: v1.61

.golangci.yml

@@ -22,6 +22,7 @@ linters:
      - goerr113
      - godox
      - gomnd
+     - mnd
      - nakedret
      - musttag
      - nlreturn

cmd/config.go

@@ -2,7 +2,7 @@ package cmd
 
 import (
 	"context"
-	"fmt"
+	"errors"
 	"net"
 	"net/http"
 	"net/url"
@@ -72,7 +72,7 @@ func (c *Config) NewClient() *client.Client {
 	if c.BasicAuth != "" {
 		s := strings.Split(c.BasicAuth, ":")
 		if len(s) != 2 {
-			check.ExitError(fmt.Errorf("specify the user name and password for server authentication <user:password>"))
+			check.ExitError(errors.New("specify the user name and password for server authentication <user:password>"))
 		}
 
 		var u = s[0]

cmd/health.go

@@ -35,7 +35,7 @@ var healthCmd = &cobra.Command{
 API translation:
 	pass = OK
 	fail = CRITICAL`,
-	Run: func(cmd *cobra.Command, args []string) {
+	Run: func(_ *cobra.Command, _ []string) {
 		// Creating an client and connecting to the API
 		c := cliConfig.NewClient()
 

cmd/query.go

@@ -1,6 +1,7 @@
 package cmd
 
 import (
+	"errors"
 	"fmt"
 	"net/http"
 	"os"
@@ -57,9 +58,9 @@ func convertToFloat64(value interface{}) (float64, error) {
 	case uint:
 		return float64(res), nil
 	case string:
-		return 0, fmt.Errorf("string value can not be evaluated")
+		return 0, errors.New("string value can not be evaluated")
 	default:
-		return 0, fmt.Errorf("unknown data type")
+		return 0, errors.New("unknown data type")
 	}
 }
 
@@ -152,12 +153,12 @@ var queryCmd = &cobra.Command{
 	Use:   "query",
 	Short: "Checks one specific or multiple values from the database using flux",
 	Long:  `Checks one specific or multiple values from the database using flux`,
-	Run: func(cmd *cobra.Command, args []string) {
+	Run: func(_ *cobra.Command, _ []string) {
 		var fluxQuery string
 		var err error
 
 		if cliQueryConfig.FluxFile == "" && cliQueryConfig.FluxString == "" {
-			check.ExitError(fmt.Errorf("flux script needs to be defined with either --flux-file or --flux-string"))
+			check.ExitError(errors.New("flux script needs to be defined with either --flux-file or --flux-string"))
 		}
 
 		crit, err = check.ParseThreshold(cliQueryConfig.Critical)

cmd/root.go

@@ -12,7 +12,7 @@ var Timeout = 30
 var rootCmd = &cobra.Command{
 	Use:   "check_influxdb",
 	Short: "An Icinga check plugin to check InfluxDB",
-	PersistentPreRun: func(cmd *cobra.Command, args []string) {
+	PersistentPreRun: func(_ *cobra.Command, _ []string) {
 		go check.HandleTimeout(Timeout)
 	},
 	Run: Usage,

internal/api/api.go

@@ -2,7 +2,7 @@ package influxdb
 
 import (
 	"encoding/json"
-	"fmt"
+	"errors"
 	"strconv"
 	"strings"
 )
@@ -32,7 +32,7 @@ func (v *APIVersion) UnmarshalJSON(b []byte) error {
 		majorVersion, convErr := strconv.Atoi(version[0])
 
 		if convErr != nil {
-			return fmt.Errorf("could not determine version")
+			return errors.New("could not determine version")
 		}
 
 		v.MajorVersion = majorVersion

internal/client/client.go

@@ -3,6 +3,7 @@ package client
 import (
 	"context"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"net/http"
 	"net/url"
@@ -47,7 +48,7 @@ func (c *Client) Version() (influxdb.APIVersion, error) {
 	// Do the HTTP Request to the URL.
 	resp, err := c.Client.Do(req)
 	if resp == nil {
-		return v, fmt.Errorf("could not reach influxdb instance")
+		return v, errors.New("could not reach influxdb instance")
 	}
 
 	if err != nil {