Golang common.Authorizer類代碼示例

// NewDeployerAPI creates a new client-side DeployerAPI facade.
func NewDeployerAPI(
	st *state.State,
	resources *common.Resources,
	authorizer common.Authorizer,
) (*DeployerAPI, error) {
	if !authorizer.AuthMachineAgent() {
		return nil, common.ErrPerm
	}
	getAuthFunc := func() (common.AuthFunc, error) {
		// Get all units of the machine and cache them.
		knownUnits := set.NewStrings()
		thisMachineTag := authorizer.GetAuthTag()
		if units, err := getAllUnits(st, thisMachineTag); err != nil {
			return nil, err
		} else {
			for _, unit := range units {
				knownUnits.Add(unit)
			}
		}
		// Then we just check if the unit is already known.
		return func(tag string) bool {
			unitName := state.UnitNameFromTag(tag)
			return knownUnits.Contains(unitName)
		}, nil
	}
	return &DeployerAPI{
		Remover:         common.NewRemover(st, getAuthFunc),
		PasswordChanger: common.NewPasswordChanger(st, getAuthFunc),
		LifeGetter:      common.NewLifeGetter(st, getAuthFunc),
		st:              st,
		resources:       resources,
		authorizer:      authorizer,
	}, nil
}

// NewDeployerAPI creates a new client-side DeployerAPI facade.
func NewDeployerAPI(
	st *state.State,
	resources *common.Resources,
	authorizer common.Authorizer,
) (*DeployerAPI, error) {
	if !authorizer.AuthMachineAgent() {
		return nil, common.ErrPerm
	}
	getAuthFunc := func() (common.AuthFunc, error) {
		// Get all units of the machine and cache them.
		thisMachineTag := authorizer.GetAuthTag()
		units, err := getAllUnits(st, thisMachineTag)
		if err != nil {
			return nil, err
		}
		// Then we just check if the unit is already known.
		return func(tag string) bool {
			for _, unit := range units {
				if names.UnitTag(unit) == tag {
					return true
				}
			}
			return false
		}, nil
	}
	return &DeployerAPI{
		Remover:         common.NewRemover(st, getAuthFunc),
		PasswordChanger: common.NewPasswordChanger(st, getAuthFunc),
		LifeGetter:      common.NewLifeGetter(st, getAuthFunc),
		st:              st,
		resources:       resources,
		authorizer:      authorizer,
	}, nil
}

// NewUpgraderAPI creates a new client-side UpgraderAPI facade.
func NewUpgraderAPI(
	st *state.State,
	resources *common.Resources,
	authorizer common.Authorizer,
) (*UpgraderAPI, error) {
	if !authorizer.AuthMachineAgent() && !authorizer.AuthUnitAgent() {
		return nil, common.ErrPerm
	}
	return &UpgraderAPI{st: st, resources: resources, authorizer: authorizer}, nil
}

// NewUpgraderAPI creates a new client-side UpgraderAPI facade.
func NewUpgraderAPI(
	st *state.State,
	resources *common.Resources,
	authorizer common.Authorizer,
) (*UpgraderAPI, error) {
	// TODO: Unit agents are also allowed to use this API
	if !authorizer.AuthMachineAgent() {
		return nil, common.ErrPerm
	}
	return &UpgraderAPI{st: st, resources: resources, authorizer: authorizer}, nil
}

// NewAgentAPI returns an object implementing the machine agent API
// with the given authorizer representing the currently logged in client.
// DEPRECATED(v1.14)
func NewAgentAPI(st *state.State, auth common.Authorizer) (*AgentAPI, error) {
	if !auth.AuthMachineAgent() {
		return nil, common.ErrPerm
	}
	getCanChange := func() (common.AuthFunc, error) {
		return auth.AuthOwner, nil
	}
	return &AgentAPI{
		PasswordChanger: common.NewPasswordChanger(st, getCanChange),
		st:              st,
		auth:            auth,
	}, nil
}

// NewAPI returns an object implementing an agent API
// with the given authorizer representing the currently logged in client.
func NewAPI(st *state.State, auth common.Authorizer) (*API, error) {
	// Agents are defined to be any user that's not a client user.
	if !auth.AuthMachineAgent() && !auth.AuthUnitAgent() {
		return nil, common.ErrPerm
	}
	getCanChange := func() (common.AuthFunc, error) {
		return auth.AuthOwner, nil
	}
	return &API{
		PasswordChanger: common.NewPasswordChanger(st, getCanChange),
		st:              st,
		auth:            auth,
	}, nil
}

// NewAgentAPI returns an object implementing the machine agent API
// with the given authorizer representing the currently logged in client.
func NewAgentAPI(st *state.State, auth common.Authorizer) (*AgentAPI, error) {
	if !auth.AuthMachineAgent() {
		return nil, common.ErrPerm
	}
	getCanChange := func() (common.AuthFunc, error) {
		// TODO(go1.1): method expression
		return func(tag string) bool {
			return auth.AuthOwner(tag)
		}, nil
	}
	return &AgentAPI{
		st:              st,
		auth:            auth,
		PasswordChanger: common.NewPasswordChanger(st, getCanChange),
	}, nil
}

// NewUniterAPI creates a new instance of the Uniter API.
func NewUniterAPI(st *state.State, resources *common.Resources, authorizer common.Authorizer) (*UniterAPI, error) {
	if !authorizer.AuthUnitAgent() {
		return nil, common.ErrPerm
	}
	getCanRead := func() (common.AuthFunc, error) {
		return authorizer.AuthOwner, nil
	}
	return &UniterAPI{
		LifeGetter:         common.NewLifeGetter(st, getCanRead),
		StatusSetter:       common.NewStatusSetter(st, getCanRead),
		DeadEnsurer:        common.NewDeadEnsurer(st, getCanRead),
		AgentEntityWatcher: common.NewAgentEntityWatcher(st, resources, getCanRead),
		st:                 st,
		auth:               authorizer,
	}, nil
}

// NewMachinerAPI creates a new instance of the Machiner API.
func NewMachinerAPI(st *state.State, resources *common.Resources, authorizer common.Authorizer) (*MachinerAPI, error) {
	if !authorizer.AuthMachineAgent() {
		return nil, common.ErrPerm
	}
	getCanRead := func() (common.AuthFunc, error) {
		return func(tag string) bool {
			// TODO(go1.1): method expression
			return authorizer.AuthOwner(tag)
		}, nil
	}
	return &MachinerAPI{
		LifeGetter: common.NewLifeGetter(st, getCanRead),
		st:         st,
		resources:  resources,
		auth:       authorizer,
	}, nil
}