func (*statusContext) processRelations(service *state.Service) (related map[string][]string, subord []string, err error) {
// TODO(mue) This way the same relation is read twice (for each service).
// Maybe add Relations() to state, read them only once and pass them to each
// call of this function.
relations, err := service.Relations()
if err != nil {
return nil, nil, err
}
var subordSet set.Strings
related = make(map[string][]string)
for _, relation := range relations {
ep, err := relation.Endpoint(service.Name())
if err != nil {
return nil, nil, err
}
relationName := ep.Relation.Name
eps, err := relation.RelatedEndpoints(service.Name())
if err != nil {
return nil, nil, err
}
for _, ep := range eps {
if ep.Scope == charm.ScopeContainer && !service.IsPrincipal() {
subordSet.Add(ep.ServiceName)
}
related[relationName] = append(related[relationName], ep.ServiceName)
}
}
for relationName, serviceNames := range related {
sn := set.NewStrings(serviceNames...)
related[relationName] = sn.SortedValues()
}
return related, subordSet.SortedValues(), nil
}
func (s *ServiceSuite) assertServiceRelations(c *C, svc *state.Service, expectedKeys ...string) []*state.Relation {
rels, err := svc.Relations()
c.Assert(err, IsNil)
if len(rels) == 0 {
return nil
}
relKeys := make([]string, len(expectedKeys))
for i, rel := range rels {
relKeys[i] = rel.String()
}
sort.Strings(relKeys)
c.Assert(relKeys, DeepEquals, expectedKeys)
return rels
}
func assertOneRelation(c *C, srv *state.Service, relId int, endpoints ...state.Endpoint) {
rels, err := srv.Relations()
c.Assert(err, IsNil)
c.Assert(rels, HasLen, 1)
rel := rels[0]
c.Assert(rel.Id(), Equals, relId)
name := srv.Name()
expectEp := endpoints[0]
ep, err := rel.Endpoint(name)
c.Assert(err, IsNil)
c.Assert(ep, DeepEquals, expectEp)
if len(endpoints) == 2 {
expectEp = endpoints[1]
}
eps, err := rel.RelatedEndpoints(name)
c.Assert(err, IsNil)
c.Assert(eps, DeepEquals, []state.Endpoint{expectEp})
}
func assertNoRelations(c *C, srv *state.Service) {
rels, err := srv.Relations()
c.Assert(err, IsNil)
c.Assert(rels, HasLen, 0)
}