Ensure consistent error handling and improve resource cleanup across widgets and APIs.

apis/docker/docker.go

@@ -3,6 +3,7 @@ package docker
 import (
 	"ArinDash/util"
 	"context"
+	"io"
 	"strings"
 
 	containertypes "github.com/docker/docker/api/types/container"
@@ -34,7 +35,12 @@ func FetchDockerMetrics(ctx context.Context) ([]ContainerMetrics, error) {
 	if err != nil {
 		return nil, err
 	}
-	defer cli.Close()
+	defer func(cli *client.Client) {
+		err := cli.Close()
+		if err != nil {
+			return
+		}
+	}(cli)
 
 	_, err = cli.Ping(ctx)
 	if err != nil {
@@ -60,7 +66,12 @@ func FetchDockerMetrics(ctx context.Context) ([]ContainerMetrics, error) {
 			continue
 		}
 		func() {
-			defer stats.Body.Close()
+			defer func(Body io.ReadCloser) {
+				err := Body.Close()
+				if err != nil {
+
+				}
+			}(stats.Body)
 			var sj containertypes.StatsResponse
 			if err := util.DecodeJSON(stats.Body, &sj); err != nil {
 				return
@@ -109,9 +120,7 @@ func cpuPercentFromStats(s containertypes.StatsResponse) float64 {
 func memoryFromStats(s containertypes.StatsResponse) (usage, limit uint64, percent float64) {
 	usage = s.MemoryStats.Usage
 	limit = s.MemoryStats.Limit
-	// Optionally discount cached memory if stats present.
 	if stats := s.MemoryStats.Stats; stats != nil {
-		// The common Linux approach: usage - cache
 		if cache, ok := stats["cache"]; ok && cache <= usage {
 			usage -= cache
 		}