初始化提交

mengyamonitor-backend/docker.go

@@ -0,0 +1,78 @@
+package main
+
+import (
+	"context"
+	"os/exec"
+	"strings"
+	"time"
+)
+
+// readDockerStats 读取 Docker 统计信息（简化版）
+func readDockerStats() DockerStats {
+	stats := DockerStats{
+		Available:    false,
+		RunningNames: []string{},
+		StoppedNames: []string{},
+		ImageNames:   []string{},
+	}
+
+	// 检查 docker 是否可用
+	if _, err := exec.LookPath("docker"); err != nil {
+		return stats
+	}
+
+	stats.Available = true
+
+	// 获取 Docker 版本
+	cmd := exec.Command("docker", "--version")
+	if out, err := cmd.Output(); err == nil {
+		stats.Version = strings.TrimSpace(string(out))
+	}
+
+	// 获取运行中的容器名
+	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
+	defer cancel()
+	cmd = exec.CommandContext(ctx, "docker", "ps", "--format", "{{.Names}}")
+	if out, err := cmd.Output(); err == nil {
+		lines := strings.Split(strings.TrimSpace(string(out)), "\n")
+		for _, line := range lines {
+			line = strings.TrimSpace(line)
+			if line != "" {
+				stats.RunningNames = append(stats.RunningNames, line)
+				stats.Running++
+			}
+		}
+	}
+
+	// 获取停止的容器名
+	ctx, cancel = context.WithTimeout(context.Background(), 3*time.Second)
+	defer cancel()
+	cmd = exec.CommandContext(ctx, "docker", "ps", "-a", "--filter", "status=exited", "--format", "{{.Names}}")
+	if out, err := cmd.Output(); err == nil {
+		lines := strings.Split(strings.TrimSpace(string(out)), "\n")
+		for _, line := range lines {
+			line = strings.TrimSpace(line)
+			if line != "" {
+				stats.StoppedNames = append(stats.StoppedNames, line)
+				stats.Stopped++
+			}
+		}
+	}
+
+	// 获取镜像名（只获取前20个，避免数据过多）
+	ctx, cancel = context.WithTimeout(context.Background(), 3*time.Second)
+	defer cancel()
+	cmd = exec.CommandContext(ctx, "docker", "images", "--format", "{{.Repository}}:{{.Tag}}")
+	if out, err := cmd.Output(); err == nil {
+		lines := strings.Split(strings.TrimSpace(string(out)), "\n")
+		for _, line := range lines {
+			line = strings.TrimSpace(line)
+			if line != "" && line != "<none>:<none>" {
+				stats.ImageNames = append(stats.ImageNames, line)
+				stats.ImageCount++
+			}
+		}
+	}
+
+	return stats
+}