Golang errors.NewWithFmt函數代碼示例

func ParseVersion(input string) (Version, error) {
	parts := strings.Split(input, ".")
	if len(parts) != 3 {
		return Version{}, errors.NewWithFmt("Could not parse version number: %s", input)
	}

	major, err1 := strconv.ParseUint(parts[0], 10, 64)
	minor, err2 := strconv.ParseUint(parts[1], 10, 64)
	patch, err3 := strconv.ParseUint(parts[2], 10, 64)
	if err1 != nil || err2 != nil || err3 != nil {
		return Version{}, errors.NewWithFmt("Could not parse version number: %s", input)
	}

	return Version{major, minor, patch}, nil
}

func (cmd CreateBuildpack) createBuildpack(buildpackName string, c *cli.Context) (buildpack models.Buildpack, apiErr error) {
	position, err := strconv.Atoi(c.Args()[2])
	if err != nil {
		apiErr = errors.NewWithFmt("Invalid position. %s", err.Error())
		return
	}

	enabled := c.Bool("enable")
	disabled := c.Bool("disable")
	if enabled && disabled {
		apiErr = errors.New("Cannot specify both enabled and disabled.")
		return
	}

	var enableOption *bool = nil
	if enabled {
		enableOption = &enabled
	}
	if disabled {
		disabled = false
		enableOption = &disabled
	}

	buildpack, apiErr = cmd.buildpackRepo.Create(buildpackName, &position, enableOption, nil)

	return
}

func (m Manifest) getAppMaps(data generic.Map) (apps []generic.Map, errs []error) {
	globalProperties := data.Except([]interface{}{"applications"})

	if data.Has("applications") {
		appMaps, ok := data.Get("applications").([]interface{})
		if !ok {
			errs = append(errs, errors.New("Expected applications to be a list"))
			return
		}

		for _, appData := range appMaps {
			if !generic.IsMappable(appData) {
				errs = append(errs, errors.NewWithFmt("Expected application to be a list of key/value pairs\nError occurred in manifest near:\n'%s'", appData))
				continue
			}

			appMap := generic.DeepMerge(globalProperties, generic.NewMap(appData))
			apps = append(apps, appMap)
		}
	} else {
		apps = append(apps, globalProperties)
	}

	return
}

func (gateway Gateway) waitForJob(jobUrl, accessToken string, timeout time.Duration) (err error) {
	startTime := time.Now()
	for true {
		if time.Since(startTime) > timeout {
			err = errors.NewWithFmt("Error: timed out waiting for async job '%s' to finish", jobUrl)
			return
		}

		var request *Request
		request, err = gateway.NewRequest("GET", jobUrl, accessToken, nil)
		response := &JobResource{}

		_, err = gateway.PerformRequestForJSONResponse(request, response)
		if err != nil {
			return
		}

		switch response.Entity.Status {
		case JOB_FINISHED:
			return
		case JOB_FAILED:
			err = errors.New(response.Entity.ErrorDetails.Description)
			return
		}

		accessToken = request.HttpReq.Header.Get("Authorization")

		time.Sleep(gateway.PollingThrottle)
	}
	return
}

func sliceOrEmptyVal(yamlMap generic.Map, key string, errs *[]error) *[]string {
	if !yamlMap.Has(key) {
		return new([]string)
	}

	var (
		stringSlice []string
		err         error
	)

	sliceErr := errors.NewWithFmt("Expected %s to be a list of strings.", key)

	switch input := yamlMap.Get(key).(type) {
	case []interface{}:
		for _, value := range input {
			stringValue, ok := value.(string)
			if !ok {
				err = sliceErr
				break
			}
			stringSlice = append(stringSlice, stringValue)
		}
	default:
		err = sliceErr
	}

	if err != nil {
		*errs = append(*errs, err)
		return nil
	}

	return &stringSlice
}

func intVal(yamlMap generic.Map, key string, errs *[]error) *int {
	var (
		intVal int
		err    error
	)

	switch val := yamlMap.Get(key).(type) {
	case string:
		intVal, err = strconv.Atoi(val)
	case int:
		intVal = val
	case int64:
		intVal = int(val)
	case nil:
		return nil
	default:
		err = errors.NewWithFmt("Expected %s to be a number, but it was a %T.", key, val)
	}

	if err != nil {
		*errs = append(*errs, err)
		return nil
	}

	return &intVal
}

func (repo CloudControllerUserRepository) checkSpaceRole(userGuid, spaceGuid, role string) (fullPath string, apiErr error) {
	rolePath, found := spaceRoleToPathMap[role]

	if !found {
		apiErr = errors.NewWithFmt("Invalid Role %s", role)
	}

	fullPath = fmt.Sprintf("%s/v2/spaces/%s/%s/%s", repo.config.ApiEndpoint(), spaceGuid, rolePath, userGuid)
	return
}

func findAppWithNameInManifest(name string, manifestApps []models.AppParams) (app models.AppParams, err error) {
	for _, appParams := range manifestApps {
		if appParams.Name != nil && *appParams.Name == name {
			app = appParams
			return
		}
	}

	err = errors.NewWithFmt("Could not find app named '%s' in manifest", name)
	return
}

func checkForNulls(yamlMap generic.Map) (errs []error) {
	generic.Each(yamlMap, func(key interface{}, value interface{}) {
		if key == "command" || key == "buildpack" {
			return
		}
		if value == nil {
			errs = append(errs, errors.NewWithFmt("%s should not be null", key))
		}
	})

	return
}

func bytesVal(yamlMap generic.Map, key string, errs *[]error) *uint64 {
	yamlVal := yamlMap.Get(key)
	if yamlVal == nil {
		return nil
	}
	value, err := formatters.ToMegabytes(yamlVal.(string))
	if err != nil {
		*errs = append(*errs, errors.NewWithFmt("Unexpected value for %s :\n%s", key, err.Error()))
		return nil
	}
	return &value
}

func stringVal(yamlMap generic.Map, key string, errs *[]error) *string {
	val := yamlMap.Get(key)
	if val == nil {
		return nil
	}
	result, ok := val.(string)
	if !ok {
		*errs = append(*errs, errors.NewWithFmt("%s must be a string value", key))
		return nil
	}
	return &result
}

func envVarOrEmptyMap(yamlMap generic.Map, errs *[]error) *map[string]string {
	key := "env"
	switch envVars := yamlMap.Get(key).(type) {
	case nil:
		aMap := make(map[string]string, 0)
		return &aMap
	case map[string]interface{}:
		yamlMap.Set(key, generic.NewMap(yamlMap.Get(key)))
		return envVarOrEmptyMap(yamlMap, errs)
	case map[interface{}]interface{}:
		yamlMap.Set(key, generic.NewMap(yamlMap.Get(key)))
		return envVarOrEmptyMap(yamlMap, errs)
	case generic.Map:
		merrs := validateEnvVars(envVars)
		if merrs != nil {
			*errs = append(*errs, merrs...)
			return nil
		}

		result := make(map[string]string, envVars.Count())
		generic.Each(envVars, func(key, value interface{}) {

			switch value.(type) {
			case string:
				result[key.(string)] = value.(string)
			case int64, int, int32:
				result[key.(string)] = fmt.Sprintf("%d", value)
			case float32, float64:
				result[key.(string)] = fmt.Sprintf("%f", value)
			default:
				*errs = append(*errs, errors.NewWithFmt("Expected environment variable %s to have a string value, but it was a %T.", key, value))
			}

		})
		return &result
	default:
		*errs = append(*errs, errors.NewWithFmt("Expected %s to be a set of key => value, but it was a %T.", key, envVars))
		return nil
	}
}

func (cmd Target) setOrganization(orgName string) error {
	// setting an org necessarily invalidates any space you had previously targeted
	cmd.config.SetOrganizationFields(models.OrganizationFields{})
	cmd.config.SetSpaceFields(models.SpaceFields{})

	org, apiErr := cmd.orgRepo.FindByName(orgName)
	if apiErr != nil {
		return errors.NewWithFmt("Could not target org.\n%s", apiErr.Error())
	}

	cmd.config.SetOrganizationFields(org.OrganizationFields)
	return nil
}

func boolVal(yamlMap generic.Map, key string, errs *[]error) bool {
	switch val := yamlMap.Get(key).(type) {
	case nil:
		return false
	case bool:
		return val
	case string:
		return val == "true"
	default:
		*errs = append(*errs, errors.NewWithFmt("Expected %s to be a boolean.", key))
		return false
	}
}

func stringOrNullVal(yamlMap generic.Map, key string, errs *[]error) *string {
	if !yamlMap.Has(key) {
		return nil
	}
	switch val := yamlMap.Get(key).(type) {
	case string:
		return &val
	case nil:
		empty := ""
		return &empty
	default:
		*errs = append(*errs, errors.NewWithFmt("%s must be a string or null value", key))
		return nil
	}
}