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moby--moby/client/errors.go
Deng Guangxing a68ba6be5d fix typo in client/errors.go comments
Signed-off-by: Deng Guangxing <dengguangxing@huawei.com>
2016-10-08 15:29:32 +08:00

208 lines
5.9 KiB
Go

package client
import (
"errors"
"fmt"
)
// ErrConnectionFailed is an error raised when the connection between the client and the server failed.
var ErrConnectionFailed = errors.New("Cannot connect to the Docker daemon. Is the docker daemon running on this host?")
// ErrorConnectionFailed returns an error with host in the error message when connection to docker daemon failed.
func ErrorConnectionFailed(host string) error {
return fmt.Errorf("Cannot connect to the Docker daemon at %s. Is the docker daemon running?", host)
}
type notFound interface {
error
NotFound() bool // Is the error a NotFound error
}
// IsErrNotFound returns true if the error is caused with an
// object (image, container, network, volume, …) is not found in the docker host.
func IsErrNotFound(err error) bool {
te, ok := err.(notFound)
return ok && te.NotFound()
}
// imageNotFoundError implements an error returned when an image is not in the docker host.
type imageNotFoundError struct {
imageID string
}
// NotFound indicates that this error type is of NotFound
func (e imageNotFoundError) NotFound() bool {
return true
}
// Error returns a string representation of an imageNotFoundError
func (e imageNotFoundError) Error() string {
return fmt.Sprintf("Error: No such image: %s", e.imageID)
}
// IsErrImageNotFound returns true if the error is caused
// when an image is not found in the docker host.
func IsErrImageNotFound(err error) bool {
return IsErrNotFound(err)
}
// containerNotFoundError implements an error returned when a container is not in the docker host.
type containerNotFoundError struct {
containerID string
}
// NotFound indicates that this error type is of NotFound
func (e containerNotFoundError) NotFound() bool {
return true
}
// Error returns a string representation of a containerNotFoundError
func (e containerNotFoundError) Error() string {
return fmt.Sprintf("Error: No such container: %s", e.containerID)
}
// IsErrContainerNotFound returns true if the error is caused
// when a container is not found in the docker host.
func IsErrContainerNotFound(err error) bool {
return IsErrNotFound(err)
}
// networkNotFoundError implements an error returned when a network is not in the docker host.
type networkNotFoundError struct {
networkID string
}
// NotFound indicates that this error type is of NotFound
func (e networkNotFoundError) NotFound() bool {
return true
}
// Error returns a string representation of a networkNotFoundError
func (e networkNotFoundError) Error() string {
return fmt.Sprintf("Error: No such network: %s", e.networkID)
}
// IsErrNetworkNotFound returns true if the error is caused
// when a network is not found in the docker host.
func IsErrNetworkNotFound(err error) bool {
return IsErrNotFound(err)
}
// volumeNotFoundError implements an error returned when a volume is not in the docker host.
type volumeNotFoundError struct {
volumeID string
}
// NotFound indicates that this error type is of NotFound
func (e volumeNotFoundError) NotFound() bool {
return true
}
// Error returns a string representation of a volumeNotFoundError
func (e volumeNotFoundError) Error() string {
return fmt.Sprintf("Error: No such volume: %s", e.volumeID)
}
// IsErrVolumeNotFound returns true if the error is caused
// when a volume is not found in the docker host.
func IsErrVolumeNotFound(err error) bool {
return IsErrNotFound(err)
}
// unauthorizedError represents an authorization error in a remote registry.
type unauthorizedError struct {
cause error
}
// Error returns a string representation of an unauthorizedError
func (u unauthorizedError) Error() string {
return u.cause.Error()
}
// IsErrUnauthorized returns true if the error is caused
// when a remote registry authentication fails
func IsErrUnauthorized(err error) bool {
_, ok := err.(unauthorizedError)
return ok
}
// nodeNotFoundError implements an error returned when a node is not found.
type nodeNotFoundError struct {
nodeID string
}
// Error returns a string representation of a nodeNotFoundError
func (e nodeNotFoundError) Error() string {
return fmt.Sprintf("Error: No such node: %s", e.nodeID)
}
// NotFound indicates that this error type is of NotFound
func (e nodeNotFoundError) NotFound() bool {
return true
}
// IsErrNodeNotFound returns true if the error is caused
// when a node is not found.
func IsErrNodeNotFound(err error) bool {
_, ok := err.(nodeNotFoundError)
return ok
}
// serviceNotFoundError implements an error returned when a service is not found.
type serviceNotFoundError struct {
serviceID string
}
// Error returns a string representation of a serviceNotFoundError
func (e serviceNotFoundError) Error() string {
return fmt.Sprintf("Error: No such service: %s", e.serviceID)
}
// NotFound indicates that this error type is of NotFound
func (e serviceNotFoundError) NotFound() bool {
return true
}
// IsErrServiceNotFound returns true if the error is caused
// when a service is not found.
func IsErrServiceNotFound(err error) bool {
_, ok := err.(serviceNotFoundError)
return ok
}
// taskNotFoundError implements an error returned when a task is not found.
type taskNotFoundError struct {
taskID string
}
// Error returns a string representation of a taskNotFoundError
func (e taskNotFoundError) Error() string {
return fmt.Sprintf("Error: No such task: %s", e.taskID)
}
// NotFound indicates that this error type is of NotFound
func (e taskNotFoundError) NotFound() bool {
return true
}
// IsErrTaskNotFound returns true if the error is caused
// when a task is not found.
func IsErrTaskNotFound(err error) bool {
_, ok := err.(taskNotFoundError)
return ok
}
type pluginPermissionDenied struct {
name string
}
func (e pluginPermissionDenied) Error() string {
return "Permission denied while installing plugin " + e.name
}
// IsErrPluginPermissionDenied returns true if the error is caused
// when a user denies a plugin's permissions
func IsErrPluginPermissionDenied(err error) bool {
_, ok := err.(pluginPermissionDenied)
return ok
}