Golang yaml.Marshal函數代碼示例

// SetCredential sets a credential by name.
func (scp *SecretsCredentialProvider) SetCredential(name string, credential *Credential) error {
	// Marshal the credential & base64 encode it.
	b, err := yaml.Marshal(credential)
	if err != nil {
		log.Printf("yaml marshal failed for credential named %s: %s", name, err)
		return err
	}

	enc := base64.StdEncoding.EncodeToString(b)

	// Then create a kubernetes object out of it
	metadata := make(map[string]string)
	metadata["name"] = name
	data := make(map[string]string)
	data["credential"] = enc
	obj := &util.KubernetesSecret{
		Kind:       secretType,
		APIVersion: "v1",
		Metadata:   metadata,
		Data:       data,
	}

	ko, err := yaml.Marshal(obj)
	if err != nil {
		log.Printf("yaml marshal failed for kubernetes object named %s: %s", name, err)
		return err
	}

	_, err = scp.k.Create(string(ko))
	return err
}

// RunController creates a new replication controller named 'name' which creates 'replicas' pods running 'image'.
func RunController(ctx api.Context, image, name string, replicas int, client client.Interface, portSpec string, servicePort int) error {
	// TODO replace ctx with a namespace string
	if servicePort > 0 && !util.IsDNSLabel(name) {
		return fmt.Errorf("service creation requested, but an invalid name for a service was provided (%s). Service names must be valid DNS labels.", name)
	}
	ports, err := portsFromString(portSpec)
	if err != nil {
		return err
	}
	controller := &api.ReplicationController{
		ObjectMeta: api.ObjectMeta{
			Name: name,
		},
		Spec: api.ReplicationControllerSpec{
			Replicas: replicas,
			Selector: map[string]string{
				"name": name,
			},
			Template: &api.PodTemplateSpec{
				ObjectMeta: api.ObjectMeta{
					Labels: map[string]string{
						"name": name,
					},
				},
				Spec: api.PodSpec{
					Containers: []api.Container{
						{
							Name:  strings.ToLower(name),
							Image: image,
							Ports: ports,
						},
					},
				},
			},
		},
	}

	controllerOut, err := client.ReplicationControllers(api.Namespace(ctx)).Create(controller)
	if err != nil {
		return err
	}
	data, err := yaml.Marshal(controllerOut)
	if err != nil {
		return err
	}
	fmt.Print(string(data))

	if servicePort > 0 {
		svc, err := createService(ctx, name, servicePort, client)
		if err != nil {
			return err
		}
		data, err = yaml.Marshal(svc)
		if err != nil {
			return err
		}
		fmt.Printf(string(data))
	}
	return nil
}

func (c *Config) Write() error {
	b, err := yaml.Marshal(c)
	if err != nil {
		return err
	}

	err = ioutil.WriteFile(saferc(), b, 0600)
	if err != nil {
		return err
	}

	url, token, skipverify, err := c.credentials()
	if err != nil {
		return err
	}

	b, err = yaml.Marshal(
		struct {
			URL        string `json:"vault"`
			Token      string `json:"token"`
			SkipVerify bool   `json:"skip_verify"`
		}{url, token, skipverify})
	if err != nil {
		return err
	}

	return ioutil.WriteFile(svtoken(), b, 0600)
}

func TestParseInto(t *testing.T) {
	got := map[string]interface{}{
		"outer": map[string]interface{}{
			"inner1": "overwrite",
			"inner2": "value2",
		},
	}
	input := "outer.inner1=value1,outer.inner3=value3"
	expect := map[string]interface{}{
		"outer": map[string]interface{}{
			"inner1": "value1",
			"inner2": "value2",
			"inner3": "value3",
		},
	}

	if err := ParseInto(input, got); err != nil {
		t.Fatal(err)
	}

	y1, err := yaml.Marshal(expect)
	if err != nil {
		t.Fatal(err)
	}
	y2, err := yaml.Marshal(got)
	if err != nil {
		t.Fatalf("Error serializing parsed value: %s", err)
	}

	if string(y1) != string(y2) {
		t.Errorf("%s: Expected:\n%s\nGot:\n%s", input, y1, y2)
	}
}

func (scp *SecretsCredentialProvider) SetCredential(name string, credential *common.RegistryCredential) error {
	// Marshal the credential & base64 encode it.
	b, err := yaml.Marshal(credential)
	if err != nil {
		log.Printf("yaml marshal failed for credential: %s: %v", name, err)
		return err
	}
	enc := base64.StdEncoding.EncodeToString(b)

	// Then create a kubernetes object out of it
	metadata := make(map[string]string)
	metadata["name"] = name
	data := make(map[string]string)
	data["credential"] = enc
	obj := &common.KubernetesSecret{
		Kind:       secretType,
		ApiVersion: "v1",
		Metadata:   metadata,
		Data:       data,
	}
	ko, err := yaml.Marshal(obj)
	if err != nil {
		log.Printf("yaml marshal failed for kubernetes object: %s: %v", name, err)
		return err
	}
	log.Printf("Calling with: %s", string(ko))
	o, err := scp.k.Create(string(ko))
	log.Printf("Create returned: %s", o)
	return err
}

// SaveChartfile saves the given metadata as a Chart.yaml file at the given path.
//
// 'filename' should be the complete path and filename ('foo/Chart.yaml')
func SaveChartfile(filename string, cf *chart.Metadata) error {
	out, err := yaml.Marshal(cf)
	if err != nil {
		return err
	}
	return ioutil.WriteFile(filename, out, 0755)
}

func (d *deployer) callServiceWithConfiguration(method, operation string, configuration *common.Configuration) (*common.Configuration, error) {
	callback := func(e error) error {
		return fmt.Errorf("cannot %s configuration: %s", operation, e)
	}

	y, err := yaml.Marshal(configuration)
	if err != nil {
		return nil, callback(err)
	}

	reader := ioutil.NopCloser(bytes.NewReader(y))
	resp, err := d.callService(method, d.getBaseURL(), reader, callback)

	if err != nil {
		return nil, err
	}

	result := &common.Configuration{}
	if len(resp) != 0 {
		if err := yaml.Unmarshal(resp, &result); err != nil {
			return nil, fmt.Errorf("cannot unmarshal response: (%v)", err)
		}
	}
	return result, nil
}

// Reindex adds an entry to the index file at the given path
func Reindex(ch *chart.Chart, path string) error {
	name := ch.Metadata.Name + "-" + ch.Metadata.Version
	y, err := LoadIndexFile(path)
	if err != nil {
		return err
	}
	found := false
	for k := range y.Entries {
		if k == name {
			found = true
			break
		}
	}
	if !found {
		dig, err := provenance.DigestFile(path)
		if err != nil {
			return err
		}

		y.Add(ch.Metadata, name+".tgz", "http://localhost:8879/charts", "sha256:"+dig)

		out, err := yaml.Marshal(y)
		if err != nil {
			return err
		}

		ioutil.WriteFile(path, out, 0644)
	}
	return nil
}

func DoParseTest(t *testing.T, storage string, obj runtime.Object, codec runtime.Codec, p *Parser) {
	jsonData, _ := codec.Encode(obj)
	var tmp map[string]interface{}
	json.Unmarshal(jsonData, &tmp)
	yamlData, _ := yaml.Marshal(tmp)
	t.Logf("Intermediate yaml:\n%v\n", string(yamlData))
	t.Logf("Intermediate json:\n%v\n", string(jsonData))
	jsonGot, jsonErr := p.ToWireFormat(jsonData, storage, latest.Codec, codec)
	yamlGot, yamlErr := p.ToWireFormat(yamlData, storage, latest.Codec, codec)

	if jsonErr != nil {
		t.Errorf("json err: %#v", jsonErr)
	}
	if yamlErr != nil {
		t.Errorf("yaml err: %#v", yamlErr)
	}
	if string(jsonGot) != string(jsonData) {
		t.Errorf("json output didn't match:\nGot:\n%v\n\nWanted:\n%v\n",
			string(jsonGot), string(jsonData))
	}
	if string(yamlGot) != string(jsonData) {
		t.Errorf("yaml parsed output didn't match:\nGot:\n%v\n\nWanted:\n%v\n",
			string(yamlGot), string(jsonData))
	}
}

// writeConfig
func writeConfig(path string, v interface{}) error {

	// take a config objects path and create (and truncate) the file, preparing it
	// to receive new configurations
	f, err := os.Create(path)
	if err != nil {
		Fatal("[config/config] os.Create() failed", err.Error())
	}
	defer f.Close()

	// marshal the config object
	b, err := yaml.Marshal(v)
	if err != nil {
		Fatal("[config/config] yaml.Marshal() failed", err.Error())
	}

	// mutex.Lock()

	// write it back to the file
	if _, err := f.Write(b); err != nil {
		return err
	}

	// mutex.Unlock()

	return nil
}

func TestValidateSchema(t *testing.T) {

	Convey("Test valid schema", t, func() {
		config := testConfig{"Tom", "Justin"}
		cfgValidator = &schemaValidatorType{}
		jb, _ := json.Marshal(config)
		errs := ValidateSchema(MOCK_CONSTRAINTS, string(jb))
		So(errs, ShouldBeNil)
	})

	Convey("Test invalid schema", t, func() {
		config := testConfig{"Tom", "Justin"}
		cfgValidator = &schemaValidatorType{}
		jb, _ := json.Marshal(config)
		errs := ValidateSchema(INVALID_MOCK_CONSTRAINTS, string(jb))
		So(errs, ShouldNotBeNil)
	})

	Convey("Test invalid json", t, func() {
		config := testConfig{"Tom", "Justin"}
		cfgValidator = &schemaValidatorType{}
		yb, _ := yaml.Marshal(config)
		errs := ValidateSchema(MOCK_CONSTRAINTS, string(yb))
		So(errs, ShouldNotBeNil)
	})
}

// getDependencies iterates over resources and returns a map of resource name to
// the set of dependencies that resource has.
//
// Dependencies are reversed for delete operation.
func getDependencies(c *common.Configuration, o operation) (DependencyMap, error) {
	deps := DependencyMap{}

	// Prepopulate map. This will be used later to validate referenced resources
	// actually exist.
	for _, r := range c.Resources {
		deps[r.Name] = make(map[string]bool)
	}

	for _, r := range c.Resources {
		props, err := yaml.Marshal(r.Properties)
		if err != nil {
			return nil, fmt.Errorf("Failed to deserialize resource properties for resource %s: %v", r.Name, r.Properties)
		}

		refs := refRe.FindAllStringSubmatch(string(props), -1)
		for _, ref := range refs {
			// Validate referenced resource exists in config.
			if _, ok := deps[ref[1]]; !ok {
				return nil, fmt.Errorf("Invalid resource name in reference: %s", ref[1])
			}

			// Delete dependencies should be reverse of create.
			if o == DeleteOperation {
				deps[ref[1]][r.Name] = true
			} else {
				deps[r.Name][ref[1]] = true
			}
		}
	}

	return deps, nil
}

func toYAML(v interface{}) string {
	y, err := yaml.Marshal(v)
	if err != nil {
		panic(fmt.Sprintf("yaml marshal failed: %v", err))
	}
	return string(y)
}

// WriteFile writes a repositories file to the given path.
func (r *RepoFile) WriteFile(path string, perm os.FileMode) error {
	data, err := yaml.Marshal(r)
	if err != nil {
		return err
	}
	return ioutil.WriteFile(path, data, perm)
}

func generateReplicationController(name string, image string, replicas int, ports []v1beta1.Port) {
	controller := []v1beta1.ReplicationController{{
		TypeMeta: v1beta1.TypeMeta{APIVersion: "v1beta1", Kind: "ReplicationController", ID: name},
		DesiredState: v1beta1.ReplicationControllerState{
			Replicas: replicas,
			ReplicaSelector: map[string]string{
				"simpleservice": name,
			},
			PodTemplate: v1beta1.PodTemplate{
				DesiredState: v1beta1.PodState{
					Manifest: v1beta1.ContainerManifest{
						Version: "v1beta2",
						Containers: []v1beta1.Container{
							{
								Name:  name,
								Image: image,
								Ports: ports,
							},
						},
					},
				},
				Labels: map[string]string{
					"simpleservice": name,
				},
			},
		},
		Labels: map[string]string{
			"simpleservice": name,
		},
	}}
	controllerOutData, err := yaml.Marshal(controller)
	checkErr(err)

	fmt.Print(string(controllerOutData))
}