Shift example into an examples directory

Gemfile

@@ -3,9 +3,6 @@
 source 'https://rubygems.org'
 gemspec
 
-gem 'rack'
-gem 'rackup'
-gem 'foreman'
 gem 'pry'
 gem 'pry-byebug'
 gem 'warning'

README.md

@@ -431,36 +431,11 @@ The [Executor](./docs/executor.md) component builds atop the Ruby fiber-based im
 - [Stitched errors](./docs/mechanics.md#stitched-errors)
 - [Null results](./docs/mechanics.md#null-results)
 
-## Example
+## Examples
 
-This repo includes a working example of several stitched schemas running across small Rack servers. Try running it:
+This repo includes working examples of stitched schemas running across small Rack servers. Clone the repo, `cd` into each example and try running it following its README instructions.
 
-```shell
-bundle install
-foreman start
-```
-
-Then visit the gateway service at `http://localhost:3000` and try this query:
-
-```graphql
-query {
-  storefront(id: "1") {
-    id
-    products {
-      upc
-      name
-      price
-      manufacturer {
-        name
-        address
-        products { upc name }
-      }
-    }
-  }
-}
-```
-
-The above query collects data from all locations, two of which are remote schemas and the third a local schema. The combined graph schema is also stitched in to provide introspection capabilities.
+- [Merged types](./examples/merged_types)
 
 ## Tests
 

examples/merged_types/Gemfile

@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+source 'https://rubygems.org'
+
+gem 'rack'
+gem 'rackup'
+gem 'foreman'
+gem 'graphql'

examples/merged_types/Procfile

@@ -0,0 +1,3 @@
+gateway: bundle exec ruby gateway.rb
+remote1: bundle exec ruby remote1.rb
+remote2: bundle exec ruby remote2.rb

examples/merged_types/README.md

@@ -0,0 +1,33 @@
+# Merged types example
+
+This example demonstrates several stitched schemas running across small Rack servers with types merged across locations. The main "gateway" location stitches its local schema onto two remote endpoints.
+
+Try running it:
+
+```shell
+cd examples/merged_types
+bundle install
+foreman start
+```
+
+Then visit the gateway service at [`http://localhost:3000`](http://localhost:3000) and try this query:
+
+```graphql
+query {
+  storefront(id: "1") {
+    id
+    products {
+      upc
+      name
+      price
+      manufacturer {
+        name
+        address
+        products { upc name }
+      }
+    }
+  }
+}
+```
+
+The above query collects data from all locations. You can also request introspections that resolve using the combined supergraph schema.

example/gateway.rb → examples/merged_types/gateway.rb

@@ -2,10 +2,9 @@
 
 require 'rackup'
 require 'json'
-require 'byebug'
 require 'graphql'
-require 'graphql/stitching'
-require_relative '../test/schemas/example'
+require_relative '../../lib/graphql/stitching'
+require_relative '../../test/schemas/example'
 
 class StitchedApp
   def initialize
@@ -19,11 +18,11 @@ def initialize
       },
       storefronts: {
         schema: Schemas::Example::Storefronts,
-        executable: GraphQL::Stitching::HttpExecutable.new(url: "http://localhost:3001/graphql"),
+        executable: GraphQL::Stitching::HttpExecutable.new(url: "http://localhost:3001"),
       },
       manufacturers: {
         schema: Schemas::Example::Manufacturers,
-        executable: GraphQL::Stitching::HttpExecutable.new(url: "http://localhost:3002/graphql"),
+        executable: GraphQL::Stitching::HttpExecutable.new(url: "http://localhost:3002"),
       }
     })
   end

examples/merged_types/remote1.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+require 'rackup'
+require 'json'
+require 'graphql'
+require_relative '../../test/schemas/example'
+
+class FirstRemoteApp
+  def call(env)
+    req = Rack::Request.new(env)
+    params = JSON.parse(req.body.read)
+    result = Schemas::Example::Storefronts.execute(
+      query: params["query"],
+      variables: params["variables"],
+      operation_name: params["operationName"],
+    )
+
+    [200, {"content-type" => "application/json"}, [JSON.generate(result)]]
+  end
+end
+
+Rackup::Handler.default.run(FirstRemoteApp.new, :Port => 3001)

examples/merged_types/remote2.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+require 'rackup'
+require 'json'
+require 'graphql'
+require_relative '../../test/schemas/example'
+
+class SecondRemoteApp
+  def call(env)
+    req = Rack::Request.new(env)
+    params = JSON.parse(req.body.read)
+    result = Schemas::Example::Manufacturers.execute(
+      query: params["query"],
+      variables: params["variables"],
+      operation_name: params["operationName"],
+    )
+
+    [200, {"content-type" => "application/json"}, [JSON.generate(result)]]
+  end
+end
+
+Rackup::Handler.default.run(SecondRemoteApp.new, :Port => 3002)

test/test_helper.rb

@@ -6,6 +6,7 @@
 Gem.path.each do |path|
   # ignore warnings from auto-generated GraphQL lib code.
   Warning.ignore(/.*mismatched indentations.*/)
+  Warning.ignore(/.*lib\/graphql\/language\/nodes.rb.*/)
 end
 
 require 'bundler/setup'