graphgate-planner 0.5.1

GraphGate is Apollo Federation implemented in Rust
Documentation 
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directive @composedGraph(version: Int!) on SCHEMA
directive @owner(service: String!) on OBJECT
directive @key(fields: String! service: String!) on OBJECT
directive @resolve(service: String!) on FIELD_DEFINITION
directive @provides(fields: String!) on FIELD_DEFINITION
directive @requires(fields: String!) on FIELD_DEFINITION

scalar DateTime

schema
@composedGraph(version: 1)
{
    query: Query
    mutation: Mutation
    subscription: Subscription
}

type Query {
    myName: String! @resolve(service: "accounts")
    me: User @resolve(service: "accounts")
    user(id: ID!): User @resolve(service: "accounts")
    topProducts: [Product!]! @resolve(service: "products")
}

type Mutation {
    createUser(username: String): User! @resolve(service: "accounts")
    createProduct(name: String!, price: Int!): Product!  @resolve(service: "products")
    createReview(body: String!, attachmentId: ID): Review!  @resolve(service: "reviews")
}

type Subscription {
    users: User @resolve(service: "accounts")
    products: Product @resolve(service: "products")
    reviews: Review @resolve(service: "reviews")
}

type User
@owner(service: "accounts")
@key(fields: "id" service: "accounts")
@key(fields: "id" service: "products")
@key(fields: "id" service: "reviews")
{
    id: ID!
    username: String!
    reviews: [Review]! @resolve(service: "reviews")
    products: [Product]! @resolve(service: "products")
}

interface Product {
    upc: String!
    name: String!
    price: Int!
    reviews: [Review]! @resolve(service: "reviews")
}

type Mouse implements Product
@owner(service: "products")
{
    upc: String!
    name: String!
    price: Int!
    reviews: [Review]! @resolve(service: "reviews")

    isWireless: Boolean!
}

type Book implements Product
@owner(service: "books")
@key(fields: "upc" service: "books")
@key(fields: "upc" service: "reviews")
{
    upc: String!
    name: String!
    price: Int!
    reviews: [Review]! @resolve(service: "reviews")

    isbn: String!
    issuer: String!
    publishDate: DateTime!
}

type Car implements Product
@owner(service: "cars")
@key(fields: "upc" service: "cars")
@key(fields: "upc" service: "reviews")
{
    upc: String!
    name: String!
    price: Int!
    reviews: [Review]! @resolve(service: "reviews")

    brand: String!
    power: Int!
    torque: Int!
}

type Review
@owner(service: "reviews")
{
    body: String!
    author: User!
    product: Product!
    attachment: Attachment
}

union Attachment = Text | Image | Audio

type Text
@owner(service: "reviews")
@key(fields: "id" service:"reviews")
{
    id: ID!
    content: String!
}

type Image
@owner(service: "attachments")
@key(fields: "id" service:"attachments")
{
    id: ID!
    width: Int!
    height: Int!
    data: String!
}

type Audio
@owner(service: "attachments")
@key(fields: "id" service:"attachments")
{
    id: ID!
    duration: Float!
    data: String!
}