func (u *UniterAPI) prepareRelationResult(rel *state.Relation, unit *state.Unit) (params.RelationResult, error) {
nothing := params.RelationResult{}
ep, err := rel.Endpoint(unit.ServiceName())
if err != nil {
// An error here means the unit's service is not part of the
// relation.
return nothing, err
}
return params.RelationResult{
Id: rel.Id(),
Key: rel.String(),
Life: params.Life(rel.Life().String()),
Endpoint: params.Endpoint{
ServiceName: ep.ServiceName,
Relation: ep.Relation,
},
}, nil
}