// AddRelation adds a relation between the specified endpoint names, and // returns a map from service names to relation endpoints. func AddRelation(state *state.State, args params.AddRelation) (params.AddRelationResults, error) { inEps, err := state.InferEndpoints(args.Endpoints) if err != nil { return params.AddRelationResults{}, err } rel, err := state.AddRelation(inEps...) if err != nil { return params.AddRelationResults{}, err } outEps := make(map[string]charm.Relation) for _, inEp := range inEps { outEp, err := rel.Endpoint(inEp.ServiceName) if err != nil { return params.AddRelationResults{}, err } outEps[inEp.ServiceName] = outEp.Relation } return params.AddRelationResults{Endpoints: outEps}, nil }