ermik · August 5, 2018 14:09 · Aug 5, 2018
diff --git a/endpoints.go b/endpoints.go
@@ -0,0 +1,17 @@
+// There are existing structs for Request -> Response dataflow as well as
+// a struct for the Product;
+//
+// In this case we are mapping the Input type to a Request type see yaml and grapqql files
+//
+// Here's the struct we map to:
+
+type CreateProductRequest struct {
+	Name        string `json:"name"`
+	GTIN        string `json:"gtin"`
+	Description string `json:"description"`
+}
+
+// You can see that there is no mapping possible for 'clientMutationId'
+// In fact, this type is returned back to the caller, so it should be preserved 
+// during query execution — in a resolver function mapping from CreareProductRequest
+// to a generated 'CreateProductPayload'
diff --git a/gqlgen.yaml b/gqlgen.yaml
@@ -0,0 +1,6 @@
+models:
+  CreateProductInput:
+    fields:
+      clientMutationId:
+        resolver: true
+    model: <proprietary_repo>/endpoints.CreateProductRequest
diff --git a/schema.graphql b/schema.graphql
@@ -0,0 +1,67 @@
+type Product implements Node {
+  """The ID of an object"""
+  id: ID!
+}
+
+type Query {
+  getProductsByName(name: String!, before: String, after: String, first: Int, last: Int): ProductConnection
+
+  """Fetches an object given its Globally Unique ID"""
+  node(
+    """The ID of the object"""
+    id: ID!
+  ): Node
+}
+
+type Mutation {
+  createProduct(input: CreateProductInput): CreateProductPayload
+}
+
+input CreateProductInput {
+  clientMutationId: String!
+  name: String!
+  gtin: String!
+  description: String!
+}
+
+type CreateProductPayload {
+  clientMutationId: String!
+  edge: ProductEdge
+}
+
+"""An object with a Globally Unique ID"""
+interface Node {
+  """The ID of the object."""
+  id: ID!
+}
+
+type ProductConnection {
+  """Information to aid in pagination."""
+  edges: [ProductEdge]
+
+  """Information to aid in pagination."""
+  pageInfo: PageInfo!
+}
+
+type ProductEdge {
+  """cursor for use in pagination"""
+  cursor: String!
+
+  """The item at the end of the edge"""
+  node: Product
+}
+
+"""Information about pagination in a connection."""
+type PageInfo {
+  """When paginating forwards, the cursor to continue."""
+  endCursor: String
+
+  """When paginating forwards, are there more items?"""
+  hasNextPage: Boolean!
+
+  """When paginating backwards, are there more items?"""
+  hasPreviousPage: Boolean!
+
+  """When paginating backwards, the cursor to continue."""
+  startCursor: String
+}