migrate away from deprecated ioutil APIs (#7175)

Co-authored-by: Callum Waters <cmwaters19@gmail.com>
Co-authored-by: M. J. Fromberger <fromberger@interchain.io>

internal/statesync/chunks.go

@@ -3,7 +3,6 @@ package statesync
 import (
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strconv"
@@ -42,7 +41,7 @@ type chunkQueue struct {
 // newChunkQueue creates a new chunk queue for a snapshot, using a temp dir for storage.
 // Callers must call Close() when done.
 func newChunkQueue(snapshot *snapshot, tempDir string) (*chunkQueue, error) {
-	dir, err := ioutil.TempDir(tempDir, "tm-statesync")
+	dir, err := os.MkdirTemp(tempDir, "tm-statesync")
 	if err != nil {
 		return nil, fmt.Errorf("unable to create temp dir for state sync chunks: %w", err)
 	}
@@ -87,7 +86,7 @@ func (q *chunkQueue) Add(chunk *chunk) (bool, error) {
 	}
 
 	path := filepath.Join(q.dir, strconv.FormatUint(uint64(chunk.Index), 10))
-	err := ioutil.WriteFile(path, chunk.Chunk, 0600)
+	err := os.WriteFile(path, chunk.Chunk, 0600)
 	if err != nil {
 		return false, fmt.Errorf("failed to save chunk %v to file %v: %w", chunk.Index, path, err)
 	}
@@ -229,7 +228,7 @@ func (q *chunkQueue) load(index uint32) (*chunk, error) {
 		return nil, nil
 	}
 
-	body, err := ioutil.ReadFile(path)
+	body, err := os.ReadFile(path)
 	if err != nil {
 		return nil, fmt.Errorf("failed to load chunk %v: %w", index, err)
 	}

internal/statesync/chunks_test.go

@@ -1,7 +1,6 @@
 package statesync
 
 import (
-	"io/ioutil"
 	"os"
 	"testing"
 
@@ -36,20 +35,20 @@ func TestNewChunkQueue_TempDir(t *testing.T) {
 		Hash:     []byte{7},
 		Metadata: nil,
 	}
-	dir, err := ioutil.TempDir("", "newchunkqueue")
+	dir, err := os.MkdirTemp("", "newchunkqueue")
 	require.NoError(t, err)
 	defer os.RemoveAll(dir)
 	queue, err := newChunkQueue(snapshot, dir)
 	require.NoError(t, err)
 
-	files, err := ioutil.ReadDir(dir)
+	files, err := os.ReadDir(dir)
 	require.NoError(t, err)
 	assert.Len(t, files, 1)
 
 	err = queue.Close()
 	require.NoError(t, err)
 
-	files, err = ioutil.ReadDir(dir)
+	files, err = os.ReadDir(dir)
 	require.NoError(t, err)
 	assert.Len(t, files, 0)
 }