Golang Environment.Set方法代码示例

// MergeEnvs amends appEnv setting variables in setEnv before setting anything new from os.Environ if inheritEnv = true
// setEnv is expected to be in the os.Environ() key=value format
func MergeEnvs(appEnv *types.Environment, inheritEnv bool, setEnv []string) {
	for _, ev := range setEnv {
		pair := strings.SplitN(ev, "=", 2)
		appEnv.Set(pair[0], pair[1])
	}

	if inheritEnv {
		for _, ev := range os.Environ() {
			pair := strings.SplitN(ev, "=", 2)
			if _, exists := appEnv.Get(pair[0]); !exists {
				appEnv.Set(pair[0], pair[1])
			}
		}
	}
}

func GenerateManifest(layerData types.DockerImageData, dockerURL *types.ParsedDockerURL) (*schema.ImageManifest, error) {
	dockerConfig := layerData.Config
	genManifest := &schema.ImageManifest{}

	appURL := ""
	// omit docker hub index URL in app name
	if dockerURL.IndexURL != defaultIndex {
		appURL = dockerURL.IndexURL + "/"
	}
	appURL += dockerURL.ImageName + "-" + layerData.ID
	appURL, err := appctypes.SanitizeACIdentifier(appURL)
	if err != nil {
		return nil, err
	}
	name := appctypes.MustACIdentifier(appURL)
	genManifest.Name = *name

	acVersion, err := appctypes.NewSemVer(schemaVersion)
	if err != nil {
		panic("invalid appc spec version")
	}
	genManifest.ACVersion = *acVersion

	genManifest.ACKind = appctypes.ACKind(schema.ImageManifestKind)

	var (
		labels       appctypes.Labels
		parentLabels appctypes.Labels
		annotations  appctypes.Annotations
	)

	layer := appctypes.MustACIdentifier("layer")
	labels = append(labels, appctypes.Label{Name: *layer, Value: layerData.ID})

	tag := dockerURL.Tag
	version := appctypes.MustACIdentifier("version")
	labels = append(labels, appctypes.Label{Name: *version, Value: tag})

	if layerData.OS != "" {
		os := appctypes.MustACIdentifier("os")
		labels = append(labels, appctypes.Label{Name: *os, Value: layerData.OS})
		parentLabels = append(parentLabels, appctypes.Label{Name: *os, Value: layerData.OS})

		if layerData.Architecture != "" {
			arch := appctypes.MustACIdentifier("arch")
			parentLabels = append(parentLabels, appctypes.Label{Name: *arch, Value: layerData.Architecture})
		}
	}

	if layerData.Author != "" {
		authorsKey := appctypes.MustACIdentifier("authors")
		annotations = append(annotations, appctypes.Annotation{Name: *authorsKey, Value: layerData.Author})
	}
	epoch := time.Unix(0, 0)
	if !layerData.Created.Equal(epoch) {
		createdKey := appctypes.MustACIdentifier("created")
		annotations = append(annotations, appctypes.Annotation{Name: *createdKey, Value: layerData.Created.Format(time.RFC3339)})
	}
	if layerData.Comment != "" {
		commentKey := appctypes.MustACIdentifier("docker-comment")
		annotations = append(annotations, appctypes.Annotation{Name: *commentKey, Value: layerData.Comment})
	}

	genManifest.Labels = labels
	genManifest.Annotations = annotations

	if dockerConfig != nil {
		exec := getExecCommand(dockerConfig.Entrypoint, dockerConfig.Cmd)
		if exec != nil {
			user, group := parseDockerUser(dockerConfig.User)
			var env appctypes.Environment
			for _, v := range dockerConfig.Env {
				parts := strings.SplitN(v, "=", 2)
				env.Set(parts[0], parts[1])
			}
			app := &appctypes.App{
				Exec:             exec,
				User:             user,
				Group:            group,
				Environment:      env,
				WorkingDirectory: dockerConfig.WorkingDir,
			}

			app.MountPoints, err = convertVolumesToMPs(dockerConfig.Volumes)
			if err != nil {
				return nil, err
			}

			app.Ports, err = convertPorts(dockerConfig.ExposedPorts, dockerConfig.PortSpecs)
			if err != nil {
				return nil, err
			}

			genManifest.App = app
		}
	}

	if layerData.Parent != "" {
		parentImageNameString := dockerURL.IndexURL + "/" + dockerURL.ImageName + "-" + layerData.Parent
		parentImageNameString, err := appctypes.SanitizeACIdentifier(parentImageNameString)
//.........这里部分代码省略.........

func GenerateManifest(layerData types.DockerImageData, dockerURL *types.ParsedDockerURL) (*schema.ImageManifest, error) {
	dockerConfig := layerData.Config
	genManifest := &schema.ImageManifest{}

	appURL := ""
	// omit docker hub index URL in app name
	if dockerURL.IndexURL != defaultIndex {
		appURL = dockerURL.IndexURL + "/"
	}
	appURL += dockerURL.ImageName + "-" + layerData.ID
	appURL, err := appctypes.SanitizeACName(appURL)
	if err != nil {
		return nil, err
	}
	name, err := appctypes.NewACName(appURL)
	if err != nil {
		return nil, err
	}
	genManifest.Name = *name

	acVersion, err := appctypes.NewSemVer(schemaVersion)
	if err != nil {
		panic("invalid appc spec version")
	}
	genManifest.ACVersion = *acVersion

	genManifest.ACKind = appctypes.ACKind(schema.ImageManifestKind)

	var labels appctypes.Labels
	var parentLabels appctypes.Labels

	layer, _ := appctypes.NewACName("layer")
	labels = append(labels, appctypes.Label{Name: *layer, Value: layerData.ID})

	tag := dockerURL.Tag
	version, _ := appctypes.NewACName("version")
	labels = append(labels, appctypes.Label{Name: *version, Value: tag})

	if layerData.OS != "" {
		os, _ := appctypes.NewACName("os")
		labels = append(labels, appctypes.Label{Name: *os, Value: layerData.OS})
		parentLabels = append(parentLabels, appctypes.Label{Name: *os, Value: layerData.OS})

		if layerData.Architecture != "" {
			arch, _ := appctypes.NewACName("arch")
			parentLabels = append(parentLabels, appctypes.Label{Name: *arch, Value: layerData.Architecture})
		}
	}

	genManifest.Labels = labels

	if dockerConfig != nil {
		exec := getExecCommand(dockerConfig.Entrypoint, dockerConfig.Cmd)
		if exec != nil {
			user, group := parseDockerUser(dockerConfig.User)
			var env appctypes.Environment
			for _, v := range dockerConfig.Env {
				parts := strings.SplitN(v, "=", 2)
				env.Set(parts[0], parts[1])
			}
			app := &appctypes.App{
				Exec:             exec,
				User:             user,
				Group:            group,
				Environment:      env,
				WorkingDirectory: dockerConfig.WorkingDir,
			}
			genManifest.App = app
		}
	}

	if layerData.Parent != "" {
		parentAppNameString := dockerURL.IndexURL + "/" + dockerURL.ImageName + "-" + layerData.Parent
		parentAppNameString, err := appctypes.SanitizeACName(parentAppNameString)
		if err != nil {
			return nil, err
		}
		parentAppName, err := appctypes.NewACName(parentAppNameString)
		if err != nil {
			return nil, err
		}

		genManifest.Dependencies = append(genManifest.Dependencies, appctypes.Dependency{App: *parentAppName, Labels: parentLabels})
	}

	return genManifest, nil
}