build: don't use ioutil

This is deprecated.

cmd/config_test.go

@@ -6,7 +6,6 @@ package cmd_test
 import (
 	"bytes"
 	"fmt"
-	"io/ioutil"
 	"net/http"
 	"net/http/httptest"
 	"os"
@@ -84,7 +83,7 @@ module1:
  workers: -5
 `
 	configFile := filepath.Join(t.TempDir(), "config.yaml")
-	ioutil.WriteFile(configFile, []byte(config), 0o644)
+	os.WriteFile(configFile, []byte(config), 0o644)
 
 	c := cmd.ConfigRelatedOptions{
 		Path: configFile,
@@ -117,7 +116,7 @@ module2:
   - name: second
 `
 	configFile := filepath.Join(t.TempDir(), "config.yaml")
-	ioutil.WriteFile(configFile, []byte(config), 0o644)
+	os.WriteFile(configFile, []byte(config), 0o644)
 
 	c := cmd.ConfigRelatedOptions{
 		Path: configFile,
@@ -198,7 +197,7 @@ module2:
   interval-value: 20m
 `
 	configFile := filepath.Join(t.TempDir(), "config.yaml")
-	ioutil.WriteFile(configFile, []byte(config), 0o644)
+	os.WriteFile(configFile, []byte(config), 0o644)
 
 	// Environment
 	clean := func() {
@@ -319,7 +318,7 @@ module1:
  workers: 10
 `
 		configFile := filepath.Join(t.TempDir(), "config.yaml")
-		ioutil.WriteFile(configFile, []byte(config), 0o644)
+		os.WriteFile(configFile, []byte(config), 0o644)
 
 		c := cmd.ConfigRelatedOptions{Path: configFile}
 
@@ -339,7 +338,7 @@ module1:
  workers: 10
 `
 		configFile := filepath.Join(t.TempDir(), "config.yaml")
-		ioutil.WriteFile(configFile, []byte(config), 0o644)
+		os.WriteFile(configFile, []byte(config), 0o644)
 
 		c := cmd.ConfigRelatedOptions{Path: configFile}
 
@@ -366,7 +365,7 @@ modules:
     topic: flows2
 `
 		configFile := filepath.Join(t.TempDir(), "config.yaml")
-		ioutil.WriteFile(configFile, []byte(config), 0o644)
+		os.WriteFile(configFile, []byte(config), 0o644)
 
 		c := cmd.ConfigRelatedOptions{
 			Path: configFile,

cmd/orchestrator_test.go

@@ -5,7 +5,7 @@ package cmd
 
 import (
 	"bytes"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"reflect"
 	"strconv"
@@ -27,7 +27,7 @@ func TestOrchestratorStart(t *testing.T) {
 }
 
 func TestOrchestratorConfig(t *testing.T) {
-	tests, err := ioutil.ReadDir("testdata/configurations")
+	tests, err := os.ReadDir("testdata/configurations")
 	if err != nil {
 		t.Fatalf("ReadDir(%q) error:\n%+v", "testdata/configurations", err)
 	}
@@ -36,7 +36,7 @@ func TestOrchestratorConfig(t *testing.T) {
 			continue
 		}
 		t.Run(test.Name(), func(t *testing.T) {
-			expected, err := ioutil.ReadFile(
+			expected, err := os.ReadFile(
 				filepath.Join("testdata/configurations", test.Name(), "expected.yaml"))
 			if err != nil {
 				t.Fatalf("ReadFile() error:\n%+v", err)

common/helpers/cache/persist.go

@@ -7,14 +7,13 @@ import (
 	"bytes"
 	"encoding/gob"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 )
 
 // Save persists the cache to the specified file
 func (c *Cache[K, V]) Save(cacheFile string) error {
-	tmpFile, err := ioutil.TempFile(
+	tmpFile, err := os.CreateTemp(
 		filepath.Dir(cacheFile),
 		fmt.Sprintf("%s-*", filepath.Base(cacheFile)))
 	if err != nil {

common/httpserver/cache.go

@@ -6,7 +6,7 @@ package httpserver
 import (
 	"bytes"
 	"crypto"
-	"io/ioutil"
+	"io"
 	"time"
 
 	cache "github.com/chenyahui/gin-cache"
@@ -31,7 +31,7 @@ func (c *Component) CacheByRequestBody(expire time.Duration) gin.HandlerFunc {
 	opts := c.commonCacheOptions()
 	opts = append(opts, cache.WithCacheStrategyByRequest(func(gc *gin.Context) (bool, cache.Strategy) {
 		requestBody, err := gc.GetRawData()
-		gc.Request.Body = ioutil.NopCloser(bytes.NewBuffer(requestBody))
+		gc.Request.Body = io.NopCloser(bytes.NewBuffer(requestBody))
 		if err != nil {
 			return false, cache.Strategy{}
 		}

console/docs.go

@@ -10,7 +10,6 @@ import (
 	"fmt"
 	"io"
 	"io/fs"
-	"io/ioutil"
 	"net/http"
 	"regexp"
 	"strings"
@@ -74,7 +73,7 @@ func (c *Component) docsHandlerFunc(gc *gin.Context) {
 		}
 
 		// Markdown rendering to build ToC
-		content, _ := ioutil.ReadAll(f)
+		content, _ := io.ReadAll(f)
 		f.Close()
 		if matches[3] == requestedDocument {
 			// That's the one we need to do final rendering on.

console/docs_test.go

@@ -5,7 +5,7 @@ package console
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"strings"
 	"testing"
@@ -40,7 +40,7 @@ func TestServeDocs(t *testing.T) {
 					t.Errorf("GET /api/v0/console/docs/%s: got status code %d, not 200",
 						tc.Path, resp.StatusCode)
 				}
-				body, _ := ioutil.ReadAll(resp.Body)
+				body, _ := io.ReadAll(resp.Body)
 				if !strings.Contains(string(body), tc.Expect) {
 					t.Logf("Body:\n%s", string(body))
 					t.Errorf("GET /api/v0/console/docs/%s: does not contain %q",

inlet/flow/input/file/root.go

@@ -6,8 +6,8 @@ package file
 
 import (
 	"errors"
-	"io/ioutil"
 	"net"
+	"os"
 	"time"
 
 	"gopkg.in/tomb.v2"
@@ -50,7 +50,7 @@ func (in *Input) Start() (<-chan []*schema.FlowMessage, error) {
 	in.t.Go(func() error {
 		for idx := 0; true; idx++ {
 			path := in.config.Paths[idx%len(in.config.Paths)]
-			data, err := ioutil.ReadFile(path)
+			data, err := os.ReadFile(path)
 			if err != nil {
 				in.r.Err(err).Str("path", path).Msg("unable to read path")
 				return err

orchestrator/clickhouse/http.go

@@ -9,8 +9,8 @@ import (
 	"encoding/csv"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
+	"os"
 	"strconv"
 	"text/template"
 	"time"
@@ -103,7 +103,7 @@ func (c *Component) registerHTTPHandlers() error {
 				w.WriteHeader(http.StatusServiceUnavailable)
 				return
 			}
-			file, err := ioutil.ReadFile(v.Source)
+			file, err := os.ReadFile(v.Source)
 			if err != nil {
 				c.r.Err(err).Msg("unable to deliver custom dict csv file")
 				http.Error(w, fmt.Sprintf("unable to deliver custom dict csv file %s", v.Source), http.StatusNotFound)

orchestrator/clickhouse/migrations_test.go

@@ -8,7 +8,6 @@ import (
 	"encoding/csv"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/url"
 	"os"
 	"path"
@@ -199,7 +198,7 @@ func TestMigration(t *testing.T) {
 
 	var lastRun map[string]string
 	var lastSteps int
-	files, err := ioutil.ReadDir("testdata/states")
+	files, err := os.ReadDir("testdata/states")
 	if err != nil {
 		t.Fatalf("ReadDir(%q) error:\n%+v", "testdata/states", err)
 	}