物联网软件

iot/EdgeAgent/pkg/docker/docker.go

@@ -0,0 +1,165 @@
+package docker
+
+import (
+	"context"
+	"encoding/base64"
+	"encoding/json"
+	"errors"
+	"io"
+	"sentinel/pkg/config"
+	"time"
+
+	"sentinel/pkg/log"
+
+	"github.com/docker/docker/api/types/container"
+	"github.com/docker/docker/api/types/filters"
+	"github.com/docker/docker/api/types/image"
+	"github.com/docker/docker/api/types/registry"
+	"github.com/docker/docker/client"
+)
+
+type DockerManager struct {
+	registry string
+	username string
+	password string
+	cli      *client.Client
+	timeout  time.Duration
+}
+
+func NewDockerManager() (*DockerManager, error) {
+	cli, err := client.NewClientWithOpts(
+		client.FromEnv,
+		client.WithAPIVersionNegotiation(),
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	return &DockerManager{
+		cli:      cli,
+		registry: config.DOCKER_REGISTRY,
+		username: config.DOCKER_USERNAME,
+		password: config.DOCKER_PASSWORD,
+		timeout:  config.DOCKER_TIME_OUT,
+	}, nil
+}
+
+func (d *DockerManager) PullImage(ctx context.Context, refStr string) error {
+	auth := registry.AuthConfig{
+		ServerAddress: d.registry,
+		Username:      d.username,
+		Password:      d.password,
+	}
+	authBytes, _ := json.Marshal(auth)
+	authStr := base64.StdEncoding.EncodeToString(authBytes)
+
+	reader, err := d.cli.ImagePull(ctx, refStr, image.PullOptions{
+		RegistryAuth: authStr,
+	})
+	if err != nil {
+		return err
+	}
+	defer reader.Close()
+	// 消费输出，避免挂起
+	_, _ = io.Copy(io.Discard, reader)
+	return nil
+}
+
+func (d *DockerManager) RunContainer(ctx context.Context) error {
+	// 停止并删除已有容器
+	if err := d.StopAndRemoveContainer(ctx); err != nil {
+		return err
+	}
+
+	// 创建容器
+	log.Println("正在启动名为<", config.DOCKER_CONTAINER_NAME, ">的容器")
+	resp, err := d.cli.ContainerCreate(
+		ctx,
+		&container.Config{
+			Image: config.DOCKER_IMAGE,
+			Healthcheck: &container.HealthConfig{
+				Test:     []string{"CMD-SHELL", "echo ok"},
+				Interval: 5 * time.Second,
+				Timeout:  2 * time.Second,
+				Retries:  3,
+			},
+		},
+		&container.HostConfig{
+			Binds:       config.DOCKER_CONTAINER_BINDS,
+			NetworkMode: "host", // <-- 使用宿主机网络
+		},
+		nil, // NetworkConfig
+		nil, // Platform
+		config.DOCKER_CONTAINER_NAME,
+	)
+	if err != nil {
+		return err
+	}
+
+	// 启动容器
+	if err := d.cli.ContainerStart(ctx, resp.ID, container.StartOptions{}); err != nil {
+		return err
+	}
+	log.Println("容器已成功运行")
+	return nil
+}
+
+// StopAndRemoveContainer 停止并删除指定容器
+func (d *DockerManager) StopAndRemoveContainer(ctx context.Context) error {
+
+	containers, err := d.cli.ContainerList(ctx, container.ListOptions{
+		All: true,
+		Filters: filters.NewArgs(
+			filters.KeyValuePair{Key: "name", Value: config.DOCKER_CONTAINER_NAME},
+		),
+	})
+	if err != nil {
+		return err
+	}
+
+	for _, c := range containers {
+		log.Println("正在停止名为<", config.DOCKER_CONTAINER_NAME, ">的容器：", c.ID)
+		timeout := 10 * time.Second
+		seconds := int(timeout.Seconds())
+		if err := d.cli.ContainerStop(ctx, c.ID, container.StopOptions{
+			Timeout: &seconds,
+		}); err != nil {
+			log.Println("Failed to stop container %s: %v", c.ID, err)
+			return err
+		}
+		if err := d.cli.ContainerRemove(ctx, c.ID, container.RemoveOptions{}); err != nil {
+			log.Println("Failed to remove container %s: %v", c.ID, err)
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (d *DockerManager) CheckContainerHealth(ctx context.Context, containerName string) (string, error) {
+	if containerName == "" {
+		return "", errors.New("containerName must not be empty")
+	}
+	containers, err := d.cli.ContainerList(ctx, container.ListOptions{
+		All: true,
+		Filters: filters.NewArgs(
+			filters.KeyValuePair{Key: "name", Value: containerName},
+		),
+	})
+	if err != nil {
+		return "", err
+	}
+	if len(containers) == 0 {
+		return "", errors.New("container not found")
+	}
+
+	inspect, err := d.cli.ContainerInspect(ctx, containers[0].ID)
+	if err != nil {
+		return "", err
+	}
+
+	if inspect.State.Health != nil {
+		return inspect.State.Health.Status, nil
+	}
+	return "unknown", nil
+}