Golang common.ServerError函数代码示例

// UpdateLatestRevisions retrieves the latest revision information from the charm store for all deployed charms
// and records this information in state.
func (api *CharmRevisionUpdaterAPI) UpdateLatestRevisions() (params.ErrorResult, error) {
	// First get the uuid for the environment to use when querying the charm store.
	env, err := api.state.Environment()
	if err != nil {
		return params.ErrorResult{Error: common.ServerError(err)}, nil
	}
	uuid := env.UUID()

	deployedCharms, err := fetchAllDeployedCharms(api.state)
	if err != nil {
		return params.ErrorResult{Error: common.ServerError(err)}, nil
	}
	// Look up the revision information for all the deployed charms.
	curls, err := retrieveLatestCharmInfo(deployedCharms, uuid)
	if err != nil {
		return params.ErrorResult{Error: common.ServerError(err)}, nil
	}
	// Add the charms and latest revision info to state as charm placeholders.
	for _, curl := range curls {
		if err = api.state.AddStoreCharmPlaceholder(curl); err != nil {
			return params.ErrorResult{Error: common.ServerError(err)}, nil
		}
	}
	return params.ErrorResult{}, nil
}

func (api *UserManagerAPI) RemoveUser(args params.Entities) (params.ErrorResults, error) {
	result := params.ErrorResults{
		Results: make([]params.ErrorResult, len(args.Entities)),
	}
	if len(args.Entities) == 0 {
		return result, nil
	}
	canWrite, err := api.getCanWrite()
	if err != nil {
		return result, err
	}
	for i, arg := range args.Entities {
		if !canWrite(arg.Tag) {
			result.Results[i].Error = common.ServerError(common.ErrPerm)
			continue
		}
		user, err := api.state.User(arg.Tag)
		if err != nil {
			result.Results[i].Error = common.ServerError(common.ErrPerm)
			continue
		}
		err = user.Deactivate()
		if err != nil {
			result.Results[i].Error = common.ServerError(fmt.Errorf("Failed to remove user: %s", err))
			continue
		}
	}
	return result, nil
}

// SetSupportedContainers updates the list of containers supported by the machines passed in args.
func (p *ProvisionerAPI) SetSupportedContainers(
	args params.MachineContainersParams) (params.ErrorResults, error) {

	result := params.ErrorResults{
		Results: make([]params.ErrorResult, len(args.Params)),
	}
	for i, arg := range args.Params {
		canAccess, err := p.getAuthFunc()
		if err != nil {
			return result, err
		}
		machine, err := p.getMachine(canAccess, arg.MachineTag)
		if err != nil {
			result.Results[i].Error = common.ServerError(err)
			continue
		}
		if len(arg.ContainerTypes) == 0 {
			err = machine.SupportsNoContainers()
		} else {
			err = machine.SetSupportedContainers(arg.ContainerTypes)
		}
		if err != nil {
			result.Results[i].Error = common.ServerError(err)
		}
	}
	return result, nil
}

// WatchAuthorisedKeys starts a watcher to track changes to the authorised ssh keys
// for the specified machines.
// The current implementation relies on global authorised keys being stored in the environment config.
// This will change as new user management and authorisation functionality is added.
func (api *KeyUpdaterAPI) WatchAuthorisedKeys(arg params.Entities) (params.NotifyWatchResults, error) {
	results := make([]params.NotifyWatchResult, len(arg.Entities))

	canRead, err := api.getCanRead()
	if err != nil {
		return params.NotifyWatchResults{}, err
	}
	for i, entity := range arg.Entities {
		// 1. Check permissions
		if !canRead(entity.Tag) {
			results[i].Error = common.ServerError(common.ErrPerm)
			continue
		}
		// 2. Check entity exists
		if _, err := api.state.FindEntity(entity.Tag); err != nil {
			if errors.IsNotFound(err) {
				results[i].Error = common.ServerError(common.ErrPerm)
			} else {
				results[i].Error = common.ServerError(err)
			}
			continue
		}
		// 3. Watch fr changes
		var err error
		watch := api.state.WatchForEnvironConfigChanges()
		// Consume the initial event.
		if _, ok := <-watch.Changes(); ok {
			results[i].NotifyWatcherId = api.resources.Register(watch)
		} else {
			err = watcher.MustErr(watch)
		}
		results[i].Error = common.ServerError(err)
	}
	return params.NotifyWatchResults{Results: results}, nil
}

func (api *UserManagerAPI) AddUser(args params.EntityPasswords) (params.ErrorResults, error) {
	result := params.ErrorResults{
		Results: make([]params.ErrorResult, len(args.Changes)),
	}
	if len(args.Changes) == 0 {
		return result, nil
	}
	canWrite, err := api.getCanWrite()
	if err != nil {
		result.Results[0].Error = common.ServerError(err)
		return result, err
	}
	for i, arg := range args.Changes {
		if !canWrite(arg.Tag) {
			result.Results[0].Error = common.ServerError(common.ErrPerm)
			continue
		}
		_, err := api.state.AddUser(arg.Tag, arg.Password)
		if err != nil {
			err = fmt.Errorf("Failed to create user: %v", err)
			result.Results[i].Error = common.ServerError(err)
			continue
		}
	}
	return result, nil
}

// DesiredVersion reports the Agent Version that we want that agent to be running
func (u *UpgraderAPI) DesiredVersion(args params.Entities) (params.VersionResults, error) {
	results := make([]params.VersionResult, len(args.Entities))
	if len(args.Entities) == 0 {
		return params.VersionResults{}, nil
	}
	agentVersion, _, err := u.getGlobalAgentVersion()
	if err != nil {
		return params.VersionResults{}, common.ServerError(err)
	}
	// Is the desired version greater than the current API server version?
	isNewerVersion := agentVersion.Compare(version.Current.Number) > 0
	for i, entity := range args.Entities {
		err := common.ErrPerm
		if u.authorizer.AuthOwner(entity.Tag) {
			if !isNewerVersion || u.entityIsManager(entity.Tag) {
				results[i].Version = &agentVersion
			} else {
				logger.Debugf("desired version is %s, but current version is %s and agent is not a manager node", agentVersion, version.Current.Number)
				results[i].Version = &version.Current.Number
			}
			err = nil
		}
		results[i].Error = common.ServerError(err)
	}
	return params.VersionResults{Results: results}, nil
}

// SetInstanceInfo sets the provider specific machine id, nonce,
// metadata and network info for each given machine. Once set, the
// instance id cannot be changed.
func (p *ProvisionerAPI) SetInstanceInfo(args params.InstancesInfo) (params.ErrorResults, error) {
	result := params.ErrorResults{
		Results: make([]params.ErrorResult, len(args.Machines)),
	}
	canAccess, err := p.getAuthFunc()
	if err != nil {
		return result, err
	}
	for i, arg := range args.Machines {
		machine, err := p.getMachine(canAccess, arg.Tag)
		if err == nil {
			var networks []state.NetworkInfo
			var interfaces []state.NetworkInterfaceInfo
			networks, interfaces, err = networkParamsToStateParams(arg.Networks, arg.Interfaces)
			if err == nil {
				err = machine.SetInstanceInfo(
					arg.InstanceId, arg.Nonce, arg.Characteristics,
					networks, interfaces)
			}
			if err != nil {
				// Give the user more context about the error.
				err = fmt.Errorf("aborted instance %q: %v", arg.InstanceId, err)
			}
		}
		result.Results[i].Error = common.ServerError(err)
	}
	return result, nil
}

// RequestedNetworks returns the requested networks for each given
// machine entity. Each entry in both lists is returned with its
// provider specific id.
func (p *ProvisionerAPI) RequestedNetworks(args params.Entities) (params.RequestedNetworksResults, error) {
	result := params.RequestedNetworksResults{
		Results: make([]params.RequestedNetworkResult, len(args.Entities)),
	}
	canAccess, err := p.getAuthFunc()
	if err != nil {
		return result, err
	}
	for i, entity := range args.Entities {
		machine, err := p.getMachine(canAccess, entity.Tag)
		if err == nil {
			var includeNetworks []string
			var excludeNetworks []string
			includeNetworks, excludeNetworks, err = machine.RequestedNetworks()
			if err == nil {
				// TODO(dimitern) For now, since network names and
				// provider ids are the same, we return what we got
				// from state. In the future, when networks can be
				// added before provisioning, we should convert both
				// slices from juju network names to provider-specific
				// ids before returning them.
				result.Results[i].IncludeNetworks = includeNetworks
				result.Results[i].ExcludeNetworks = excludeNetworks
			}
		}
		result.Results[i].Error = common.ServerError(err)
	}
	return result, nil
}

// DistributionGroup returns, for each given machine entity,
// a slice of instance.Ids that belong to the same distribution
// group as that machine. This information may be used to
// distribute instances for high availability.
func (p *ProvisionerAPI) DistributionGroup(args params.Entities) (params.DistributionGroupResults, error) {
	result := params.DistributionGroupResults{
		Results: make([]params.DistributionGroupResult, len(args.Entities)),
	}
	canAccess, err := p.getAuthFunc()
	if err != nil {
		return result, err
	}
	for i, entity := range args.Entities {
		machine, err := p.getMachine(canAccess, entity.Tag)
		if err == nil {
			// If the machine is an environment manager, return
			// environment manager instances. Otherwise, return
			// instances with services in common with the machine
			// being provisioned.
			if machine.IsManager() {
				result.Results[i].Result, err = environManagerInstances(p.st)
			} else {
				result.Results[i].Result, err = commonServiceInstances(p.st, machine)
			}
		}
		result.Results[i].Error = common.ServerError(err)
	}
	return result, nil
}

func (api *RsyslogAPI) SetRsyslogCert(args params.SetRsyslogCertParams) (params.ErrorResult, error) {
	var result params.ErrorResult
	if !api.canModify {
		result.Error = common.ServerError(common.ErrBadCreds)
		return result, nil
	}
	if _, err := cert.ParseCert(string(args.CACert)); err != nil {
		result.Error = common.ServerError(err)
		return result, nil
	}
	attrs := map[string]interface{}{"rsyslog-ca-cert": string(args.CACert)}
	if err := api.st.UpdateEnvironConfig(attrs, nil, nil); err != nil {
		result.Error = common.ServerError(err)
	}
	return result, nil
}

// CharmURL returns the charm URL for all given units or services.
func (u *UniterAPI) CharmURL(args params.Entities) (params.StringBoolResults, error) {
	result := params.StringBoolResults{
		Results: make([]params.StringBoolResult, len(args.Entities)),
	}
	accessUnitOrService := common.AuthEither(u.accessUnit, u.accessService)
	canAccess, err := accessUnitOrService()
	if err != nil {
		return params.StringBoolResults{}, err
	}
	for i, entity := range args.Entities {
		err := common.ErrPerm
		if canAccess(entity.Tag) {
			var unitOrService state.Entity
			unitOrService, err = u.st.FindEntity(entity.Tag)
			if err == nil {
				charmURLer := unitOrService.(interface {
					CharmURL() (*charm.URL, bool)
				})
				curl, ok := charmURLer.CharmURL()
				if curl != nil {
					result.Results[i].Result = curl.String()
					result.Results[i].Ok = ok
				}
			}
		}
		result.Results[i].Error = common.ServerError(err)
	}
	return result, nil
}

// ReadRemoteSettings returns the remote settings of each given set of
// relation/local unit/remote unit.
func (u *UniterAPI) ReadRemoteSettings(args params.RelationUnitPairs) (params.RelationSettingsResults, error) {
	result := params.RelationSettingsResults{
		Results: make([]params.RelationSettingsResult, len(args.RelationUnitPairs)),
	}
	canAccess, err := u.accessUnit()
	if err != nil {
		return params.RelationSettingsResults{}, err
	}
	for i, arg := range args.RelationUnitPairs {
		relUnit, err := u.getRelationUnit(canAccess, arg.Relation, arg.LocalUnit)
		if err == nil {
			remoteUnit := ""
			remoteUnit, err = u.checkRemoteUnit(relUnit, arg.RemoteUnit)
			if err == nil {
				var settings map[string]interface{}
				settings, err = relUnit.ReadSettings(remoteUnit)
				if err == nil {
					result.Results[i].Settings, err = convertRelationSettings(settings)
				}
			}
		}
		result.Results[i].Error = common.ServerError(err)
	}
	return result, nil
}

// GetPrincipal returns the result of calling PrincipalName() and
// converting it to a tag, on each given unit.
func (u *UniterAPI) GetPrincipal(args params.Entities) (params.StringBoolResults, error) {
	result := params.StringBoolResults{
		Results: make([]params.StringBoolResult, len(args.Entities)),
	}
	canAccess, err := u.accessUnit()
	if err != nil {
		return params.StringBoolResults{}, err
	}
	for i, entity := range args.Entities {
		err := common.ErrPerm
		if canAccess(entity.Tag) {
			var unit *state.Unit
			unit, err = u.getUnit(entity.Tag)
			if err == nil {
				principal, ok := unit.PrincipalName()
				if principal != "" {
					result.Results[i].Result = names.UnitTag(principal)
				}
				result.Results[i].Ok = ok
			}
		}
		result.Results[i].Error = common.ServerError(err)
	}
	return result, nil
}

// CharmArchiveURL returns the URL, corresponding to the charm archive
// (bundle) in the provider storage for each given charm URL, along
// with the DisableSSLHostnameVerification flag.
func (u *UniterAPI) CharmArchiveURL(args params.CharmURLs) (params.CharmArchiveURLResults, error) {
	result := params.CharmArchiveURLResults{
		Results: make([]params.CharmArchiveURLResult, len(args.URLs)),
	}
	// Get the SSL hostname verification environment setting.
	envConfig, err := u.st.EnvironConfig()
	if err != nil {
		return result, err
	}
	// SSLHostnameVerification defaults to true, so we need to
	// invert that, for backwards-compatibility (older versions
	// will have DisableSSLHostnameVerification: false by default).
	disableSSLHostnameVerification := !envConfig.SSLHostnameVerification()
	for i, arg := range args.URLs {
		curl, err := charm.ParseURL(arg.URL)
		if err != nil {
			err = common.ErrPerm
		} else {
			var sch *state.Charm
			sch, err = u.st.Charm(curl)
			if errors.IsNotFound(err) {
				err = common.ErrPerm
			}
			if err == nil {
				result.Results[i].Result = sch.BundleURL().String()
				result.Results[i].DisableSSLHostnameVerification = disableSSLHostnameVerification
			}
		}
		result.Results[i].Error = common.ServerError(err)
	}
	return result, nil
}

// PublicAddress returns the public address for each given unit, if set.
func (u *UniterAPI) PublicAddress(args params.Entities) (params.StringResults, error) {
	result := params.StringResults{
		Results: make([]params.StringResult, len(args.Entities)),
	}
	canAccess, err := u.accessUnit()
	if err != nil {
		return params.StringResults{}, err
	}
	for i, entity := range args.Entities {
		err := common.ErrPerm
		if canAccess(entity.Tag) {
			var unit *state.Unit
			unit, err = u.getUnit(entity.Tag)
			if err == nil {
				address, ok := unit.PublicAddress()
				if ok {
					result.Results[i].Result = address
				} else {
					err = common.NoAddressSetError(entity.Tag, "public")
				}
			}
		}
		result.Results[i].Error = common.ServerError(err)
	}
	return result, nil
}