Apollo Odyssey（Apolloのチュートリアル）でApollo Federationをさわってみる

git clone https://github.com/apollographql/odyssey-voyage-I

pnpm install

query GetHomePageLocationsAndReviews {
  latestReviews {
    id
    comment
    rating
    location {
      name
    }
  }
  locations {
    id
    name
    overallRating
    photo
    reviewsForLocation {
      id
      comment
      rating
    }
  }
}

query GetLocationDetails($locationId: ID!) {
  location(id: $locationId) {
    id
    name
    description
    photo
    overallRating
    reviewsForLocation {
      id
      comment
      rating
    }
  }
}

mutation SubmitReview($locationReview: LocationReviewInput) {
  submitReview(locationReview: $locationReview) {
    code
    success
    message
    locationReview {
      id
      comment
      rating
    }
  }
}

# schema entry points
type Query {
  latestReviews: [Review!]!
  locations: [Location!]!
  location(id: ID!): Location
}

type Mutation {
  submitReview(locationReview: LocationReviewInput): SubmitReviewResponse
}

# type definitions
type Location {
  id: ID!
  name: String!
  description: String!
  photo: String!
  reviewsForLocation: [Review]!
  overallRating: Float
}

type Review {
  id: ID!
  comment: String
  rating: Int
  location: Location
}

type LocationReviewInput {
  comment: String!
  rating: Int!
  locationId: String!
}

type SubmitReviewResponse {
  code: Int!
  success: Boolean!
  message: String!
  locationReview: Review
}

pnpm install

+ extend schema
+   @link(url: "https://specs.apollo.dev/federation/v2.0", import: ["@key"])
+
  type Query {
    "The full list of locations presented by the Interplanetary Space Tourism department"
    locations: [Location!]!
    "The details of a specific location"
    location(id: ID!): Location
  }

pnpm add @apollo/subgraph

const { buildSubgraphSchema } = require('@apollo/subgraph');

// ...

async function startApolloServer() {
  const server = new ApolloServer({
    schema: buildSubgraphSchema({ typeDefs, resolvers }),
  });

// ...

APOLLO_KEY=service:FlyBy-jzwxog:••••••••••••••••••••••
APOLLO_GRAPH_REF=FlyBy-jzwxog@current

curl -sSL https://rover.apollo.dev/nix/latest | sh

fish_add_path ~/.rover/bin

rover --version
Rover 0.12.1

rover config auth
Go to https://studio.apollographql.com/user-settings/api-keys and create a new Personal API Key.
Copy the key and paste it into the prompt below.
>
Successfully saved API key.

rover subgraph publish FlyBy-jzwxog@current \
      --name locations \
      --schema ./subgraph-locations/locations.graphql \
      --routing-url http://localhost:4001

rover subgraph publish FlyBy-jzwxog@current \
      --name reviews \
      --schema ./subgraph-reviews/reviews.graphql \
      --routing-url http://localhost:4002

type Query @join__type(graph: LOCATIONS) @join__type(graph: REVIEWS) {
  """
  The full list of locations presented by the Interplanetary Space Tourism department
  """
  locations: [Location!]! @join__field(graph: LOCATIONS)

  """
  The details of a specific location
  """
  location(id: ID!): Location @join__field(graph: LOCATIONS)

  """
  The three latest reviews submitted for FlyBy's locations
  """
  latestReviews: [Review!]! @join__field(graph: REVIEWS)
}

curl -sSL https://router.apollo.dev/download/nix/latest | sh

APOLLO_KEY=service:FlyBy-jzwxog:•••••••••••••••••••••• APOLLO_GRAPH_REF=FlyBy-jzwxog@current ./router
2023-02-21T11:58:35.893452Z  INFO Apollo Router v1.10.3 // (c) Apollo Graph, Inc. // Licensed as ELv2 (https://go.apollo.dev/elv2)
2023-02-21T11:58:35.893627Z  INFO Anonymous usage data is gathered to inform Apollo product development.  See https://go.apollo.dev/o/privacy for details.
2023-02-21T11:58:37.011177Z  INFO Apollo Studio usage reporting is enabled. See https://go.apollo.dev/o/data for details
2023-02-21T11:58:39.155477Z  INFO Health check endpoint exposed at http://127.0.0.1:8088/health
2023-02-21T11:58:39.159479Z  INFO GraphQL endpoint exposed at http://127.0.0.1:4000/ 🚀

npx diagnose-endpoint@1.1.0 --endpoint=http://127.0.0.1:4000/
Need to install the following packages:
  diagnose-endpoint@1.1.0
Ok to proceed? (y) y
Diagnosing http://127.0.0.1:4000/
⚠️  Introspection query received a response of {"errors":[{"message":"introspection has been disabled","extensions":{"code":"INTROSPECTION_DISABLED"}}]}. Does introspection need to be turned on?

- type Location {
+ type Location @key(fields: "id") {
    id: ID!
    "The name of the location"
    name: String!
    "A short description about the location"
    description: String!
    "The location's main photo as a URL"
    photo: String!
  }

rover subgraph publish FlyBy-jzwxog@current \
      --name locations \
      --schema ./subgraph-locations/locations.graphql \
      --routing-url http://localhost:4001

+ type Location @key(fields: "id", resolvable: false) {
+   id: ID!
+ }

rover subgraph publish FlyBy-jzwxog@current \
      --name reviews \
      --schema ./subgraph-reviews/reviews.graphql \
      --routing-url http://localhost:4002

  type Review {
    id: ID!
    "Written text"
    comment: String
    "A number from 1 - 5 with 1 being lowest and 5 being highest"
    rating: Int
+   "The location the review is about"
+   location: Location
  }

  Review: {
    location: ({ locationId }) => {
      return { id: locationId };
    },
  },

rover subgraph publish FlyBy-jzwxog@current \
      --name reviews \
      --schema ./subgraph-reviews/reviews.graphql \
      --routing-url http://localhost:4002

  Location: {
    __resolveReference: ({ id }, { dataSources }) => {
      return dataSources.locationsAPI.getLocation(id);
    },
  },

type Location @key(fields: "id") {
  id: ID!
  "The calculated overall rating based on all reviews"
  overallRating: Float
  "All submitted reviews about this location"
  reviewsForLocation: [Review]!
}

  Location: {
    overallRating: ({id}, _, {dataSources}) => {
      return dataSources.reviewsAPI.getOverallRatingForLocation(id);
    },
    reviewsForLocation: ({id}, _, {dataSources}) => {
      return dataSources.reviewsAPI.getReviewsForLocation(id);
    },
  },

rover subgraph publish FlyBy-jzwxog@current \
      --name reviews \
      --schema ./subgraph-reviews/reviews.graphql \
      --routing-url http://localhost:4002

npm install

pnpm start

cors:
  origins:
    - http://localhost:3000
    - https://studio.apollographql.com

APOLLO_KEY=service:FlyBy-jzwxog:•••••••••••••••••••••• \
APOLLO_GRAPH_REF=FlyBy-jzwxog@current \
./router --dev --config config.yaml