package daemon import ( "fmt" "strings" "syscall" "github.com/pkg/errors" "google.golang.org/grpc" ) func errNotRunning(id string) error { return stateConflictError{errors.Errorf("Container %s is not running", id)} } func containerNotFound(id string) error { return objNotFoundError{"container", id} } func volumeNotFound(id string) error { return objNotFoundError{"volume", id} } func networkNotFound(id string) error { return objNotFoundError{"network", id} } type objNotFoundError struct { object string id string } func (e objNotFoundError) Error() string { return "No such " + e.object + ": " + e.id } func (e objNotFoundError) NotFound() {} type stateConflictError struct { cause error } func (e stateConflictError) Error() string { return e.cause.Error() } func (e stateConflictError) Cause() error { return e.cause } func (e stateConflictError) Conflict() {} func errContainerIsRestarting(containerID string) error { cause := errors.Errorf("Container %s is restarting, wait until the container is running", containerID) return stateConflictError{cause} } func errExecNotFound(id string) error { return objNotFoundError{"exec instance", id} } func errExecPaused(id string) error { cause := errors.Errorf("Container %s is paused, unpause the container before exec", id) return stateConflictError{cause} } type validationError struct { cause error } func (e validationError) Error() string { return e.cause.Error() } func (e validationError) InvalidParameter() {} func (e validationError) Cause() error { return e.cause } type notAllowedError struct { cause error } func (e notAllowedError) Error() string { return e.cause.Error() } func (e notAllowedError) Forbidden() {} func (e notAllowedError) Cause() error { return e.cause } type containerNotModifiedError struct { running bool } func (e containerNotModifiedError) Error() string { if e.running { return "Container is already started" } return "Container is already stopped" } func (e containerNotModifiedError) NotModified() {} type systemError struct { cause error } func (e systemError) Error() string { return e.cause.Error() } func (e systemError) SystemError() {} func (e systemError) Cause() error { return e.cause } type invalidIdentifier string func (e invalidIdentifier) Error() string { return fmt.Sprintf("invalid name or ID supplied: %q", string(e)) } func (invalidIdentifier) InvalidParameter() {} type duplicateMountPointError string func (e duplicateMountPointError) Error() string { return "Duplicate mount point: " + string(e) } func (duplicateMountPointError) InvalidParameter() {} type containerFileNotFound struct { file string container string } func (e containerFileNotFound) Error() string { return "Could not find the file " + e.file + " in container " + e.container } func (containerFileNotFound) NotFound() {} type invalidFilter struct { filter string value interface{} } func (e invalidFilter) Error() string { msg := "Invalid filter '" + e.filter if e.value != nil { msg += fmt.Sprintf("=%s", e.value) } return msg + "'" } func (e invalidFilter) InvalidParameter() {} type unknownError struct { cause error } func (e unknownError) Error() string { return e.cause.Error() } func (unknownError) Unknown() {} func (e unknownError) Cause() error { return e.cause } type startInvalidConfigError string func (e startInvalidConfigError) Error() string { return string(e) } func (e startInvalidConfigError) InvalidParameter() {} // Is this right??? func translateContainerdStartErr(cmd string, setExitCode func(int), err error) error { errDesc := grpc.ErrorDesc(err) contains := func(s1, s2 string) bool { return strings.Contains(strings.ToLower(s1), s2) } var retErr error = unknownError{errors.New(errDesc)} // if we receive an internal error from the initial start of a container then lets // return it instead of entering the restart loop // set to 127 for container cmd not found/does not exist) if contains(errDesc, cmd) && (contains(errDesc, "executable file not found") || contains(errDesc, "no such file or directory") || contains(errDesc, "system cannot find the file specified")) { setExitCode(127) retErr = startInvalidConfigError(errDesc) } // set to 126 for container cmd can't be invoked errors if contains(errDesc, syscall.EACCES.Error()) { setExitCode(126) retErr = startInvalidConfigError(errDesc) } // attempted to mount a file onto a directory, or a directory onto a file, maybe from user specified bind mounts if contains(errDesc, syscall.ENOTDIR.Error()) { errDesc += ": Are you trying to mount a directory onto a file (or vice-versa)? Check if the specified host path exists and is the expected type" setExitCode(127) retErr = startInvalidConfigError(errDesc) } // TODO: it would be nice to get some better errors from containerd so we can return better errors here return retErr }