errors.go

package errors

import (
	"fmt"
	"reflect"

	"github.com/openconfig/ygot/ygot"
)

// ErrNilClient implements the Error interface and is called if a GNMI Client is nil.
type ErrNilClient struct {
}

func (e *ErrNilClient) Error() string {
	return fmt.Sprintf("client cannot be nil")
}

// ErrNil implements the Error interface and is called if a struct is nil.
type ErrNil struct {
}

func (e *ErrNil) Error() string {
	return fmt.Sprintf("struct cannot be nil")
}

// ErrNotFound implements the Error interface and is called if a specific ID
// of a storable item could not be found.
type ErrNotFound struct {
	ID   interface{}
	Name interface{}
}

func (e *ErrNotFound) Error() string {
	return fmt.Sprintf("ID: %v or Name: %v not found", e.ID, e.Name)
}

// ErrAlreadyExists implements the Error interface and is called if a specific ID
// of a storable item already exists.
type ErrAlreadyExists struct {
	Item interface{}
}

func (e *ErrAlreadyExists) Error() string {
	return fmt.Sprintf("%T %v already exists", e.Item, e.Item)
}

// ErrInvalidUUID implements the Error interface and is called if a UUID is not valid.
type ErrInvalidUUID struct {
	DeviceName string
}

func (e *ErrInvalidUUID) Error() string {
	return fmt.Sprintf("UUID not valid")
}

// ErrInvalidTypeAssertion implements the Error interface and is called if the
// type of a storable item does not correspond to the expected type.
type ErrInvalidTypeAssertion struct {
	Value interface{}
	Type  interface{}
}

func (e ErrInvalidTypeAssertion) Error() string {
	return fmt.Sprintf("%v does not implement %v", reflect.TypeOf(e.Value).Elem(), reflect.TypeOf(e.Type).Elem())
}

// ErrUnsupportedPath implements the Error interface and is called if the
// given path is not supported.
type ErrUnsupportedPath struct {
	Path interface{}
}

func (e ErrUnsupportedPath) Error() string {
	return fmt.Sprintf("path %v is not supported", e.Path)
}

// ErrPathNotFound implements the Error interface and is called if the
// given path is not supported.
type ErrPathNotFound struct {
	Path interface{}
	Err  error
}

func (e ErrPathNotFound) Error() string {
	return fmt.Sprintf("path %v not found: %v", e.Path, e.Err)
}

// ErrNotYetImplemented implements the Error interface and is called if a function
// is not implemented yet.
type ErrNotYetImplemented struct{}

func (e ErrNotYetImplemented) Error() string {
	return fmt.Sprintf("function not yet implemented")
}

// ErrInvalidParameters implements the Error interface and is called if the wrong
// or no parameters have been provided.
type ErrInvalidParameters struct {
	Func  interface{}
	Param interface{}
}

func (e ErrInvalidParameters) Error() string {
	return fmt.Sprintf("invalid parameters for %v: %v", e.Func, e.Param)
}

// ErrInvalidTransportOptions implements the Error interface and is called if the
// wrong TransportOptions have been provided.
type ErrInvalidTransportOptions struct {
	Opt interface{}
}

func (e ErrInvalidTransportOptions) Error() string {
	return fmt.Sprintf("invalid transport options: %v", reflect.TypeOf(e.Opt))
}

// ErrOperationNotSupported implements the Error interface and is called if the
// wrong Operation has been provided.
type ErrOperationNotSupported struct {
	Op interface{}
}

func (e ErrOperationNotSupported) Error() string {
	return fmt.Sprintf("transport operation not supported: %v", reflect.TypeOf(e.Op))
}

// ErrUnsupportedSbiType implements the Error interface and is called if the
// wrong Type for a SBI has been provided.
type ErrUnsupportedSbiType struct {
	Type interface{}
}

func (e ErrUnsupportedSbiType) Error() string {
	return fmt.Sprintf("SBI type not supported: %v", e.Type)
}

// ErrPluginVersion implements the Error interface and is called if the Version
// of a Plugin is older than a Plugin in use.
type ErrPluginVersion struct {
	PlugID, ProvidedVer, UsedVer string
}

func (e ErrPluginVersion) Error() string {
	return fmt.Sprintf("Version of Plugin: %s is older than the one in use. Provided: %s, in use: %s", e.PlugID, e.ProvidedVer, e.UsedVer)
}

// ErrorList implements the Error interface and is called if a slice of errors
// should be returned. The slice of errors is combined into a single error
// message and returned.
type ErrorList struct {
	Errors []error
}

func (e ErrorList) Error() string {
	combinedErrString := "Errors found:"
	for i, err := range e.Errors {
		errString := fmt.Sprintf("\n %v. %v", i+1, err)
		combinedErrString = combinedErrString + errString
	}
	return combinedErrString
}

// ErrTypeNotSupported implements the Error interface and is called if the
// wrong Type has been provided.
type ErrTypeNotSupported struct {
	Type interface{}
}

func (e ErrTypeNotSupported) Error() string {
	return fmt.Sprintf("type not supported: %v", reflect.TypeOf(e.Type))
}

// ErrCouldNotMarshall implements Error interface and is called if a
// database respone can not be parsed.
type ErrCouldNotMarshall struct {
	StoreName string
}

func (e ErrCouldNotMarshall) Error() string {
	return fmt.Sprintf("could not marshall %s", e.StoreName)
}

// ErrCouldNotUpdate implements the Error interface and is called if a
// stored item can not be updated.
type ErrCouldNotUpdate struct {
	StoreName string
}

func (e ErrCouldNotUpdate) Error() string {
	return fmt.Sprintf("could not update %s", e.StoreName)
}

// ErrCouldNotFind implements the Error interface and is called if a
// stored item can not be found.
type ErrCouldNotFind struct {
	StoreName string
}

func (e ErrCouldNotFind) Error() string {
	return fmt.Sprintf("could not find %s", e.StoreName)
}

// ErrCouldNotCreate implements the Error interface and is called if a
// stored item can not be found.
type ErrCouldNotCreate struct {
	StoreName string
}

func (e ErrCouldNotCreate) Error() string {
	return fmt.Sprintf("could not create %s", e.StoreName)
}

// ErrCouldNotDelete implements the Error interface and is called if a
// stored item can not be deleted.
type ErrCouldNotDelete struct {
	StoreName string
}

func (e ErrCouldNotDelete) Error() string {
	return fmt.Sprintf("could not delete %s", e.StoreName)
}

// ErrNoNewChanges implements the Error interface and is called if a the
// gNMI-Notification created from ygot.Diff does not contain any `updates` or
// `deletes`.
type ErrNoNewChanges struct {
	Original ygot.GoStruct
	Modified ygot.GoStruct
}

func (e ErrNoNewChanges) Error() string {
	return fmt.Sprintf("There are no changes between %v and %v", e.Original, e.Modified)
}