Inigo

Author: ardatan

federation/inigo/Dockerfile

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+# we need curl to perform health checks
+# and that's why we start with alpine image
+# and copy the gateway binary from the original docker image
+FROM alpine:3.19
+RUN apk add --no-cache curl
+
+COPY --from=inigohub/gateway:v0.30.15 /usr/bin/gateway .
+
+COPY supergraph.graphql ./
+COPY config.yaml ./
+
+EXPOSE 4000
+
+CMD ["./gateway", "--schema", "supergraph.graphql", "--config", "config.yaml"]

federation/inigo/config.yaml

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+listen_port: 4000

federation/inigo/docker-compose.yaml

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+version: "3.8"
+
+services:
+  gateway:
+    image: gateway/inigo
+    container_name: gateway
+    build:
+      context: ${BASE_DIR:-.}/../../gateways/inigo
+      dockerfile: ./Dockerfile
+    networks:
+      - test
+    ports:
+      - "0.0.0.0:4000:4000"
+    depends_on:
+      accounts:
+        condition: service_healthy
+      inventory:
+        condition: service_healthy
+      products:
+        condition: service_healthy
+      reviews:
+        condition: service_healthy
+    healthcheck:
+      test: ["CMD", "curl", "-f", "-X", "GET", "http://localhost:4000/health"]
+      interval: 3s
+      timeout: 5s
+      retries: 10
+    deploy:
+      resources:
+        limits:
+          cpus: ${CPU_LIMIT:-1}
+          memory: ${MEM_LIMIT:-1gb}
+networks:
+  test:
+    name: test

federation/inigo/supergraph.graphql

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+# Generated by Inigo CLI
+
+schema
+  @link(for: EXECUTION, url: "https://specs.apollo.dev/join/v0.2")
+  @link(url: "https://specs.apollo.dev/link/v1.0") {
+  query: Query
+}
+
+scalar join__FieldSet
+scalar link__Import
+
+enum join__Graph {
+  ACCOUNTS @join__graph(name: "accounts", url: "http://accounts:4001/graphql")
+  INVENTORY
+    @join__graph(name: "inventory", url: "http://inventory:4002/graphql")
+  PRODUCTS @join__graph(name: "products", url: "http://products:4003/graphql")
+  REVIEWS @join__graph(name: "reviews", url: "http://reviews:4004/graphql")
+}
+enum link__Purpose {
+  """
+  `EXECUTION` features provide metadata necessary for operation execution.
+  """
+  EXECUTION
+  """
+  `SECURITY` features provide metadata necessary to securely resolve fields.
+  """
+  SECURITY
+}
+
+type Product
+  @join__type(extension: true, graph: INVENTORY, key: "upc")
+  @join__type(extension: true, graph: REVIEWS, key: "upc")
+  @join__type(graph: PRODUCTS, key: "upc") {
+  inStock: Boolean @join__field(graph: INVENTORY)
+  name: String @join__field(graph: PRODUCTS)
+  price: Int
+    @join__field(external: true, graph: INVENTORY)
+    @join__field(graph: PRODUCTS)
+  reviews: [Review] @join__field(graph: REVIEWS)
+  shippingEstimate: Int @join__field(graph: INVENTORY, requires: "price weight")
+  upc: String!
+  weight: Int
+    @join__field(external: true, graph: INVENTORY)
+    @join__field(graph: PRODUCTS)
+}
+type Query
+  @join__type(graph: ACCOUNTS)
+  @join__type(graph: INVENTORY)
+  @join__type(graph: PRODUCTS)
+  @join__type(graph: REVIEWS) {
+  me: User @join__field(graph: ACCOUNTS)
+  topProducts(first: Int = 5): [Product] @join__field(graph: PRODUCTS)
+  user(id: ID!): User @join__field(graph: ACCOUNTS)
+  users: [User] @join__field(graph: ACCOUNTS)
+}
+type Review @join__type(graph: REVIEWS, key: "id") {
+  author: User @join__field(graph: REVIEWS, provides: "username")
+  body: String
+  id: ID!
+  product: Product
+}
+type User
+  @join__type(extension: true, graph: REVIEWS, key: "id")
+  @join__type(graph: ACCOUNTS, key: "id") {
+  birthday: Int @join__field(graph: ACCOUNTS)
+  id: ID!
+  name: String @join__field(graph: ACCOUNTS)
+  reviews: [Review] @join__field(graph: REVIEWS)
+  username: String
+    @join__field(external: true, graph: REVIEWS)
+    @join__field(graph: ACCOUNTS)
+}
+
+directive @join__field(
+  external: Boolean
+  graph: join__Graph!
+  override: String
+  provides: join__FieldSet
+  requires: join__FieldSet
+  type: String
+  usedOverridden: Boolean
+) repeatable on FIELD_DEFINITION | INPUT_FIELD_DEFINITION
+
+directive @join__graph(name: String!, url: String!) on ENUM_VALUE
+
+directive @join__implements(
+  graph: join__Graph!
+  interface: String!
+) repeatable on OBJECT | INTERFACE
+
+directive @join__type(
+  extension: Boolean! = false
+  graph: join__Graph!
+  key: join__FieldSet
+  resolvable: Boolean! = true
+) repeatable on OBJECT | INTERFACE | UNION | ENUM | INPUT_OBJECT | SCALAR
+
+directive @link(
+  as: String
+  for: link__Purpose
+  import: [link__Import]
+  url: String
+) repeatable on SCHEMA