コード例 #1
0
ファイル: migration.go プロジェクト: trythings/trythings
func (api *MigrationAPI) Start() error {
	runAll := delay.Func("*MigrationService.RunAll", func(ctx context.Context) error {
		return api.MigrationService.RunAll(AsSuperuser(ctx))
	})

	api.Mutations = map[string]*graphql.Field{
		"migrate": relay.MutationWithClientMutationID(relay.MutationConfig{
			Name:         "Migrate",
			InputFields:  graphql.InputObjectConfigFieldMap{},
			OutputFields: graphql.Fields{},
			MutateAndGetPayload: func(inputMap map[string]interface{}, info graphql.ResolveInfo, ctx context.Context) (map[string]interface{}, error) {
				u, err := api.UserService.FromContext(ctx)
				if err != nil {
					return nil, err
				}

				if !u.IsAdmin {
					return nil, errors.New("user must be an admin")
				}

				err = runAll.Call(ctx)
				if err != nil {
					return nil, err
				}

				return map[string]interface{}{}, nil
			},
		}),
	}

	return nil
}
コード例 #2
0
	"time"
)

func testAsyncDataMutation(resultChan *chan int) {
	// simulate async data mutation
	time.Sleep(time.Second * 1)
	*resultChan <- int(1)
}

var simpleMutationTest = relay.MutationWithClientMutationID(relay.MutationConfig{
	Name:        "SimpleMutation",
	InputFields: graphql.InputObjectConfigFieldMap{},
	OutputFields: graphql.FieldConfigMap{
		"result": &graphql.FieldConfig{
			Type: graphql.Int,
		},
	},
	MutateAndGetPayload: func(inputMap map[string]interface{}, info graphql.ResolveInfo) map[string]interface{} {
		return map[string]interface{}{
			"result": 1,
		}
	},
})

// async mutation
var simplePromiseMutationTest = relay.MutationWithClientMutationID(relay.MutationConfig{
	Name:        "SimplePromiseMutation",
	InputFields: graphql.InputObjectConfigFieldMap{},
	OutputFields: graphql.FieldConfigMap{
		"result": &graphql.FieldConfig{
			Type: graphql.Int,
		},
コード例 #3
0
ファイル: mutation_test.go プロジェクト: N0hbdy/relay
	"golang.org/x/net/context"
)

func testAsyncDataMutation(resultChan *chan int) {
	// simulate async data mutation
	time.Sleep(time.Second * 1)
	*resultChan <- int(1)
}

var simpleMutationTest = relay.MutationWithClientMutationID(relay.MutationConfig{
	Name:        "SimpleMutation",
	InputFields: graphql.InputObjectConfigFieldMap{},
	OutputFields: graphql.Fields{
		"result": &graphql.Field{
			Type: graphql.Int,
		},
	},
	MutateAndGetPayload: func(inputMap map[string]interface{}, info graphql.ResolveInfo, ctx context.Context) (map[string]interface{}, error) {
		return map[string]interface{}{
			"result": 1,
		}, nil
	},
})

var NotFoundError = errors.New("not found")

var simpleMutationErrorTest = relay.MutationWithClientMutationID(relay.MutationConfig{
	Name:        "SimpleMutation",
	InputFields: graphql.InputObjectConfigFieldMap{},
	OutputFields: graphql.Fields{
		"result": &graphql.Field{
			Type: graphql.Int,
コード例 #4
0
ファイル: task.go プロジェクト: trythings/trythings
func (api *TaskAPI) Start() error {
	api.Type = graphql.NewObject(graphql.ObjectConfig{
		Name:        "Task",
		Description: "Task represents a particular action or piece of work to be completed.",
		Fields: graphql.Fields{
			"id": relay.GlobalIDField("Task", nil),
			"createdAt": &graphql.Field{
				Description: "When the task was first added",
				Type:        graphql.String,
			},
			"title": &graphql.Field{
				Description: "A short summary of the task",
				Type:        graphql.String,
			},
			"description": &graphql.Field{
				Description: "A more detailed explanation of the task",
				Type:        graphql.String,
			},
			"isArchived": &graphql.Field{
				Description: "Whether this task requires attention",
				Type:        graphql.Boolean,
			},
		},
		Interfaces: []*graphql.Interface{
			api.NodeInterface,
		},
	})
	api.ConnectionType = relay.ConnectionDefinitions(relay.ConnectionConfig{
		Name:     api.Type.Name(),
		NodeType: api.Type,
	}).ConnectionType

	api.Mutations = map[string]*graphql.Field{
		"addTask": relay.MutationWithClientMutationID(relay.MutationConfig{
			Name: "AddTask",
			InputFields: graphql.InputObjectConfigFieldMap{
				"title": &graphql.InputObjectFieldConfig{
					Type: graphql.NewNonNull(graphql.String),
				},
				"description": &graphql.InputObjectFieldConfig{
					Type: graphql.String,
				},
				"spaceId": &graphql.InputObjectFieldConfig{
					Type: graphql.NewNonNull(graphql.String),
				},
			},
			OutputFields: graphql.Fields{
				"task": &graphql.Field{
					Type: api.Type,
					Resolve: func(p graphql.ResolveParams) (interface{}, error) {
						payload, ok := p.Source.(map[string]interface{})
						if !ok {
							return nil, errors.New("could not cast payload to map")
						}
						id, ok := payload["taskId"].(string)
						if !ok {
							return nil, errors.New("could not cast taskId to string")
						}
						t, err := api.TaskService.ByID(p.Context, id)
						if err != nil {
							return nil, err
						}
						return t, nil
					},
				},
			},
			MutateAndGetPayload: func(inputMap map[string]interface{}, info graphql.ResolveInfo, ctx context.Context) (map[string]interface{}, error) {
				title, ok := inputMap["title"].(string)
				if !ok {
					return nil, errors.New("could not cast title to string")
				}

				var desc string
				descOrNil := inputMap["description"]
				if descOrNil != nil {
					desc, ok = descOrNil.(string)
					if !ok {
						return nil, errors.New("could not cast description to string")
					}
				}

				spaceID, ok := inputMap["spaceId"].(string)
				if !ok {
					return nil, errors.New("could not cast spaceId to string")
				}
				resolvedSpaceID := relay.FromGlobalID(spaceID)
				if resolvedSpaceID == nil {
					return nil, fmt.Errorf("invalid id %q", spaceID)
				}

				t := &Task{
					Title:       title,
					Description: desc,
					SpaceID:     resolvedSpaceID.ID,
				}
				err := api.TaskService.Create(ctx, t)
				if err != nil {
					return nil, err
				}

				return map[string]interface{}{
					"taskId": t.ID,
				}, nil
			},
		}),
		"editTask": relay.MutationWithClientMutationID(relay.MutationConfig{
			Name: "EditTask",
			InputFields: graphql.InputObjectConfigFieldMap{
				"id": &graphql.InputObjectFieldConfig{
					Type: graphql.NewNonNull(graphql.ID),
				},
				"title": &graphql.InputObjectFieldConfig{
					Type: graphql.String,
				},
				"description": &graphql.InputObjectFieldConfig{
					Type: graphql.String,
				},
				"isArchived": &graphql.InputObjectFieldConfig{
					Type: graphql.Boolean,
				},
			},
			OutputFields: graphql.Fields{
				"task": &graphql.Field{
					Type: api.Type,
					Resolve: func(p graphql.ResolveParams) (interface{}, error) {
						payload, ok := p.Source.(map[string]interface{})
						if !ok {
							return nil, errors.New("could not cast payload to map")
						}
						id, ok := payload["id"].(string)
						if !ok {
							return nil, errors.New("could not cast id to string")
						}
						t, err := api.TaskService.ByID(p.Context, id)
						if err != nil {
							return nil, err
						}
						return t, nil
					},
				},
			},
			MutateAndGetPayload: func(inputMap map[string]interface{}, info graphql.ResolveInfo, ctx context.Context) (map[string]interface{}, error) {
				id, ok := inputMap["id"].(string)
				if !ok {
					return nil, errors.New("could not cast id to string")
				}

				resolvedID := relay.FromGlobalID(id)
				if resolvedID == nil {
					return nil, fmt.Errorf("invalid id %q", id)
				}

				t, err := api.TaskService.ByID(ctx, resolvedID.ID)
				if err != nil {
					return nil, err
				}

				title, ok := inputMap["title"].(string)
				if ok {
					t.Title = title
				}

				description, ok := inputMap["description"].(string)
				if ok {
					t.Description = description
				}

				isArchived, ok := inputMap["isArchived"].(bool)
				if ok {
					t.IsArchived = isArchived
				}

				err = api.TaskService.Update(ctx, t)
				if err != nil {
					return nil, err
				}

				return map[string]interface{}{
					"id": t.ID,
				}, nil
			},
		}),
	}

	return nil
}
コード例 #5
0
ファイル: schema.go プロジェクト: bsr203/relay
func init() {

	/**
	 * We get the node interface and field from the relay library.
	 *
	 * The first method is the way we resolve an ID to its object. The second is the
	 * way we resolve an object that implements node to its type.
	 */
	nodeDefinitions = relay.NewNodeDefinitions(relay.NodeDefinitionsConfig{
		IDFetcher: func(id string, info graphql.ResolveInfo) interface{} {
			// resolve id from global id
			resolvedID := relay.FromGlobalID(id)

			// based on id and its type, return the object
			if resolvedID.Type == "Faction" {
				return GetFaction(resolvedID.ID)
			} else {
				return GetShip(resolvedID.ID)
			}
		},
		TypeResolve: func(value interface{}, info graphql.ResolveInfo) *graphql.Object {
			// based on the type of the value, return GraphQLObjectType
			switch value.(type) {
			case *Faction:
				return factionType
			default:
				return shipType
			}
		},
	})

	/**
	 * We define our basic ship type.
	 *
	 * This implements the following type system shorthand:
	 *   type Ship : Node {
	 *     id: String!
	 *     name: String
	 *   }
	 */
	shipType = graphql.NewObject(graphql.ObjectConfig{
		Name:        "Ship",
		Description: "A ship in the Star Wars saga",
		Fields: graphql.Fields{
			"id": relay.GlobalIDField("Ship", nil),
			"name": &graphql.Field{
				Type:        graphql.String,
				Description: "The name of the ship.",
			},
		},
		Interfaces: []*graphql.Interface{
			nodeDefinitions.NodeInterface,
		},
	})

	/**
	 * We define a connection between a faction and its ships.
	 *
	 * connectionType implements the following type system shorthand:
	 *   type ShipConnection {
	 *     edges: [ShipEdge]
	 *     pageInfo: PageInfo!
	 *   }
	 *
	 * connectionType has an edges field - a list of edgeTypes that implement the
	 * following type system shorthand:
	 *   type ShipEdge {
	 *     cursor: String!
	 *     node: Ship
	 *   }
	 */
	shipConnectionDefinition := relay.ConnectionDefinitions(relay.ConnectionConfig{
		Name:     "Ship",
		NodeType: shipType,
	})

	/**
	 * We define our faction type, which implements the node interface.
	 *
	 * This implements the following type system shorthand:
	 *   type Faction : Node {
	 *     id: String!
	 *     name: String
	 *     ships: ShipConnection
	 *   }
	 */
	factionType = graphql.NewObject(graphql.ObjectConfig{
		Name:        "Faction",
		Description: "A faction in the Star Wars saga",
		Fields: graphql.Fields{
			"id": relay.GlobalIDField("Faction", nil),
			"name": &graphql.Field{
				Type:        graphql.String,
				Description: "The name of the faction.",
			},
			"ships": &graphql.Field{
				Type: shipConnectionDefinition.ConnectionType,
				Args: relay.ConnectionArgs,
				Resolve: func(p graphql.ResolveParams) interface{} {
					// convert args map[string]interface into ConnectionArguments
					args := relay.NewConnectionArguments(p.Args)

					// get ship objects from current faction
					ships := []interface{}{}
					if faction, ok := p.Source.(*Faction); ok {
						for _, shipId := range faction.Ships {
							ships = append(ships, GetShip(shipId))
						}
					}
					// let relay library figure out the result, given
					// - the list of ships for this faction
					// - and the filter arguments (i.e. first, last, after, before)
					return relay.ConnectionFromArray(ships, args)
				},
			},
		},
		Interfaces: []*graphql.Interface{
			nodeDefinitions.NodeInterface,
		},
	})

	/**
	 * This is the type that will be the root of our query, and the
	 * entry point into our schema.
	 *
	 * This implements the following type system shorthand:
	 *   type Query {
	 *     rebels: Faction
	 *     empire: Faction
	 *     node(id: String!): Node
	 *   }
	 */
	queryType := graphql.NewObject(graphql.ObjectConfig{
		Name: "Query",
		Fields: graphql.Fields{
			"rebels": &graphql.Field{
				Type: factionType,
				Resolve: func(p graphql.ResolveParams) interface{} {
					return GetRebels()
				},
			},
			"empire": &graphql.Field{
				Type: factionType,
				Resolve: func(p graphql.ResolveParams) interface{} {
					return GetEmpire()
				},
			},
			"node": nodeDefinitions.NodeField,
		},
	})

	/**
	 * This will return a GraphQLField for our ship
	 * mutation.
	 *
	 * It creates these two types implicitly:
	 *   input IntroduceShipInput {
	 *     clientMutationID: string!
	 *     shipName: string!
	 *     factionId: ID!
	 *   }
	 *
	 *   input IntroduceShipPayload {
	 *     clientMutationID: string!
	 *     ship: Ship
	 *     faction: Faction
	 *   }
	 */
	shipMutation := relay.MutationWithClientMutationID(relay.MutationConfig{
		Name: "IntroduceShip",
		InputFields: graphql.InputObjectConfigFieldMap{
			"shipName": &graphql.InputObjectFieldConfig{
				Type: graphql.NewNonNull(graphql.String),
			},
			"factionId": &graphql.InputObjectFieldConfig{
				Type: graphql.NewNonNull(graphql.ID),
			},
		},
		OutputFields: graphql.Fields{
			"ship": &graphql.Field{
				Type: shipType,
				Resolve: func(p graphql.ResolveParams) interface{} {
					if payload, ok := p.Source.(map[string]interface{}); ok {
						return GetShip(payload["shipId"].(string))
					}
					return nil
				},
			},
			"faction": &graphql.Field{
				Type: factionType,
				Resolve: func(p graphql.ResolveParams) interface{} {
					if payload, ok := p.Source.(map[string]interface{}); ok {
						return GetFaction(payload["factionId"].(string))
					}
					return nil
				},
			},
		},
		MutateAndGetPayload: func(inputMap map[string]interface{}, info graphql.ResolveInfo) map[string]interface{} {
			// `inputMap` is a map with keys/fields as specified in `InputFields`
			// Note, that these fields were specified as non-nullables, so we can assume that it exists.
			shipName := inputMap["shipName"].(string)
			factionId := inputMap["factionId"].(string)

			// This mutation involves us creating (introducing) a new ship
			newShip := CreateShip(shipName, factionId)
			// return payload
			return map[string]interface{}{
				"shipId":    newShip.ID,
				"factionId": factionId,
			}
		},
	})

	/**
	 * This is the type that will be the root of our mutations, and the
	 * entry point into performing writes in our schema.
	 *
	 * This implements the following type system shorthand:
	 *   type Mutation {
	 *     introduceShip(input IntroduceShipInput!): IntroduceShipPayload
	 *   }
	 */

	mutationType := graphql.NewObject(graphql.ObjectConfig{
		Name: "Mutation",
		Fields: graphql.Fields{
			"introduceShip": shipMutation,
		},
	})

	/**
	 * Finally, we construct our schema (whose starting query type is the query
	 * type we defined above) and export it.
	 */
	var err error
	Schema, err = graphql.NewSchema(graphql.SchemaConfig{
		Query:    queryType,
		Mutation: mutationType,
	})
	if err != nil {
		// panic if there is an error in schema
		panic(err)
	}
}
コード例 #6
0
ファイル: schema.go プロジェクト: sogko/todomvc-relay-go
func init() {

	nodeDefinitions = relay.NewNodeDefinitions(relay.NodeDefinitionsConfig{
		IDFetcher: func(id string, info graphql.ResolveInfo) interface{} {
			resolvedID := relay.FromGlobalID(id)
			if resolvedID.Type == "Todo" {
				return GetTodo(resolvedID.ID)
			}
			if resolvedID.Type == "User" {
				return GetUser(resolvedID.ID)
			}
			return nil
		},
		TypeResolve: func(value interface{}, info graphql.ResolveInfo) *graphql.Object {
			switch value.(type) {
			case *Todo:
				return todoType
			case *User:
				return userType
			default:
				return userType
			}
		},
	})

	todoType = graphql.NewObject(graphql.ObjectConfig{
		Name: "Todo",
		Fields: graphql.Fields{
			"id": relay.GlobalIDField("Todo", nil),
			"text": &graphql.Field{
				Type: graphql.String,
			},
			"complete": &graphql.Field{
				Type: graphql.Boolean,
			},
		},
		Interfaces: []*graphql.Interface{nodeDefinitions.NodeInterface},
	})

	todosConnection = relay.ConnectionDefinitions(relay.ConnectionConfig{
		Name:     "Todo",
		NodeType: todoType,
	})

	userType = graphql.NewObject(graphql.ObjectConfig{
		Name: "User",
		Fields: graphql.Fields{
			"id": relay.GlobalIDField("User", nil),
			"todos": &graphql.Field{
				Type: todosConnection.ConnectionType,
				Args: relay.NewConnectionArgs(graphql.FieldConfigArgument{
					"status": &graphql.ArgumentConfig{
						Type:         graphql.String,
						DefaultValue: "any",
					},
				}),
				Resolve: func(p graphql.ResolveParams) interface{} {
					status, _ := p.Args["status"].(string)
					args := relay.NewConnectionArguments(p.Args)
					todos := TodosToSliceInterface(GetTodos(status))
					return relay.ConnectionFromArray(todos, args)
				},
			},
			"totalCount": &graphql.Field{
				Type: graphql.Int,
				Resolve: func(p graphql.ResolveParams) interface{} {
					return len(GetTodos("any"))
				},
			},
			"completedCount": &graphql.Field{
				Type: graphql.Int,
				Resolve: func(p graphql.ResolveParams) interface{} {
					return len(GetTodos("completed"))
				},
			},
		},
		Interfaces: []*graphql.Interface{nodeDefinitions.NodeInterface},
	})

	rootType := graphql.NewObject(graphql.ObjectConfig{
		Name: "Root",
		Fields: graphql.Fields{
			"viewer": &graphql.Field{
				Type: userType,
				Resolve: func(p graphql.ResolveParams) interface{} {
					return GetViewer()
				},
			},
			"node": nodeDefinitions.NodeField,
		},
	})

	addTodoMutation := relay.MutationWithClientMutationID(relay.MutationConfig{
		Name: "AddTodo",
		InputFields: graphql.InputObjectConfigFieldMap{
			"text": &graphql.InputObjectFieldConfig{
				Type: graphql.NewNonNull(graphql.String),
			},
		},
		OutputFields: graphql.Fields{
			"todoEdge": &graphql.Field{
				Type: todosConnection.EdgeType,
				Resolve: func(p graphql.ResolveParams) interface{} {
					payload, _ := p.Source.(map[string]interface{})
					todoId, _ := payload["todoId"].(string)
					todo := GetTodo(todoId)
					return relay.EdgeType{
						Node:   todo,
						Cursor: relay.CursorForObjectInConnection(TodosToSliceInterface(GetTodos("any")), todo),
					}
				},
			},
			"viewer": &graphql.Field{
				Type: userType,
				Resolve: func(p graphql.ResolveParams) interface{} {
					return GetViewer()
				},
			},
		},
		MutateAndGetPayload: func(inputMap map[string]interface{}, info graphql.ResolveInfo) map[string]interface{} {
			text, _ := inputMap["text"].(string)
			todoId := AddTodo(text, false)
			return map[string]interface{}{
				"todoId": todoId,
			}
		},
	})

	changeTodoStatusMutation := relay.MutationWithClientMutationID(relay.MutationConfig{
		Name: "ChangeTodoStatus",
		InputFields: graphql.InputObjectConfigFieldMap{
			"id": &graphql.InputObjectFieldConfig{
				Type: graphql.NewNonNull(graphql.ID),
			},
			"complete": &graphql.InputObjectFieldConfig{
				Type: graphql.NewNonNull(graphql.Boolean),
			},
		},
		OutputFields: graphql.Fields{
			"todo": &graphql.Field{
				Type: todoType,
				Resolve: func(p graphql.ResolveParams) interface{} {
					payload, _ := p.Source.(map[string]interface{})
					todoId, _ := payload["todoId"].(string)
					todo := GetTodo(todoId)
					return todo
				},
			},
			"viewer": &graphql.Field{
				Type: userType,
				Resolve: func(p graphql.ResolveParams) interface{} {
					return GetViewer()
				},
			},
		},
		MutateAndGetPayload: func(inputMap map[string]interface{}, info graphql.ResolveInfo) map[string]interface{} {
			id, _ := inputMap["id"].(string)
			complete, _ := inputMap["complete"].(bool)
			resolvedId := relay.FromGlobalID(id)
			ChangeTodoStatus(resolvedId.ID, complete)
			return map[string]interface{}{
				"todoId": resolvedId.ID,
			}
		},
	})

	markAllTodosMutation := relay.MutationWithClientMutationID(relay.MutationConfig{
		Name: "MarkAllTodos",
		InputFields: graphql.InputObjectConfigFieldMap{
			"complete": &graphql.InputObjectFieldConfig{
				Type: graphql.NewNonNull(graphql.Boolean),
			},
		},
		OutputFields: graphql.Fields{
			"changedTodos": &graphql.Field{
				Type: graphql.NewList(todoType),
				Resolve: func(p graphql.ResolveParams) interface{} {
					payload, _ := p.Source.(map[string]interface{})
					todoIds, _ := payload["todoIds"].([]string)
					todos := []*Todo{}
					for _, todoId := range todoIds {
						todo := GetTodo(todoId)
						if todo != nil {
							todos = append(todos, todo)
						}
					}
					return todos
				},
			},
			"viewer": &graphql.Field{
				Type: userType,
				Resolve: func(p graphql.ResolveParams) interface{} {
					return GetViewer()
				},
			},
		},
		MutateAndGetPayload: func(inputMap map[string]interface{}, info graphql.ResolveInfo) map[string]interface{} {
			complete, _ := inputMap["complete"].(bool)
			todoIds := MarkAllTodos(complete)
			return map[string]interface{}{
				"todoIds": todoIds,
			}
		},
	})

	removeCompletedTodosMutation := relay.MutationWithClientMutationID(relay.MutationConfig{
		Name: "RemoveCompletedTodos",
		OutputFields: graphql.Fields{
			"deletedTodoIds": &graphql.Field{
				Type: graphql.NewList(graphql.String),
				Resolve: func(p graphql.ResolveParams) interface{} {
					payload, _ := p.Source.(map[string]interface{})
					return payload["todoIds"]
				},
			},
			"viewer": &graphql.Field{
				Type: userType,
				Resolve: func(p graphql.ResolveParams) interface{} {
					return GetViewer()
				},
			},
		},
		MutateAndGetPayload: func(inputMap map[string]interface{}, info graphql.ResolveInfo) map[string]interface{} {
			todoIds := RemoveCompletedTodos()
			return map[string]interface{}{
				"todoIds": todoIds,
			}
		},
	})

	removeTodoMutation := relay.MutationWithClientMutationID(relay.MutationConfig{
		Name: "RemoveTodo",
		InputFields: graphql.InputObjectConfigFieldMap{
			"id": &graphql.InputObjectFieldConfig{
				Type: graphql.NewNonNull(graphql.ID),
			},
		},
		OutputFields: graphql.Fields{
			"deletedTodoId": &graphql.Field{
				Type: graphql.ID,
				Resolve: func(p graphql.ResolveParams) interface{} {
					payload, _ := p.Source.(map[string]interface{})
					return payload["todoId"]
				},
			},
			"viewer": &graphql.Field{
				Type: userType,
				Resolve: func(p graphql.ResolveParams) interface{} {
					return GetViewer()
				},
			},
		},
		MutateAndGetPayload: func(inputMap map[string]interface{}, info graphql.ResolveInfo) map[string]interface{} {
			id, _ := inputMap["id"].(string)
			resolvedId := relay.FromGlobalID(id)
			RemoveTodo(resolvedId.ID)
			return map[string]interface{}{
				"todoId": resolvedId.ID,
			}
		},
	})
	renameTodoMutation := relay.MutationWithClientMutationID(relay.MutationConfig{
		Name: "RenameTodo",
		InputFields: graphql.InputObjectConfigFieldMap{
			"id": &graphql.InputObjectFieldConfig{
				Type: graphql.NewNonNull(graphql.ID),
			},
			"text": &graphql.InputObjectFieldConfig{
				Type: graphql.NewNonNull(graphql.String),
			},
		},
		OutputFields: graphql.Fields{
			"todo": &graphql.Field{
				Type: todoType,
				Resolve: func(p graphql.ResolveParams) interface{} {
					payload, _ := p.Source.(map[string]interface{})
					todoId, _ := payload["todoId"].(string)
					return GetTodo(todoId)
				},
			},
			"viewer": &graphql.Field{
				Type: userType,
				Resolve: func(p graphql.ResolveParams) interface{} {
					return GetViewer()
				},
			},
		},
		MutateAndGetPayload: func(inputMap map[string]interface{}, info graphql.ResolveInfo) map[string]interface{} {
			id, _ := inputMap["id"].(string)
			resolvedId := relay.FromGlobalID(id)
			text, _ := inputMap["text"].(string)
			RenameTodo(resolvedId.ID, text)
			return map[string]interface{}{
				"todoId": resolvedId.ID,
			}
		},
	})
	mutationType := graphql.NewObject(graphql.ObjectConfig{
		Name: "Mutation",
		Fields: graphql.Fields{
			"addTodo":              addTodoMutation,
			"changeTodoStatus":     changeTodoStatusMutation,
			"markAllTodos":         markAllTodosMutation,
			"removeCompletedTodos": removeCompletedTodosMutation,
			"removeTodo":           removeTodoMutation,
			"renameTodo":           renameTodoMutation,
		},
	})

	var err error
	Schema, err = graphql.NewSchema(graphql.SchemaConfig{
		Query:    rootType,
		Mutation: mutationType,
	})
	if err != nil {
		panic(err)
	}
}