// Copyright 2012-2015 Canonical Ltd. // Licensed under the AGPLv3, see LICENCE file for details. package state import ( "fmt" "github.com/juju/errors" "gopkg.in/juju/charm.v6-unstable" "gopkg.in/mgo.v2/txn" ) // ErrCharmAlreadyUploaded is returned by UpdateUploadedCharm() when // the given charm is already uploaded and marked as not pending in // state. type ErrCharmAlreadyUploaded struct { curl *charm.URL } func (e *ErrCharmAlreadyUploaded) Error() string { return fmt.Sprintf("charm %q already uploaded", e.curl) } // IsCharmAlreadyUploadedError returns if the given error is // ErrCharmAlreadyUploaded. func IsCharmAlreadyUploadedError(err interface{}) bool { if err == nil { return false } // In case of a wrapped error, check the cause first. value := err cause := errors.Cause(err.(error)) if cause != nil { value = cause } _, ok := value.(*ErrCharmAlreadyUploaded) return ok } // ErrCharmRevisionAlreadyModified is returned when a pending or // placeholder charm is no longer pending or a placeholder, signaling // the charm is available in state with its full information. var ErrCharmRevisionAlreadyModified = fmt.Errorf("charm revision already modified") var ErrDead = fmt.Errorf("not found or dead") var errNotAlive = fmt.Errorf("not found or not alive") func onAbort(txnErr, err error) error { if txnErr == txn.ErrAborted || errors.Cause(txnErr) == txn.ErrAborted { return errors.Trace(err) } return errors.Trace(txnErr) }