Add example and testing for graphql 1.13

instrumentation/graphql/Appraisals

@@ -4,6 +4,10 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
+appraise 'graphql-1.13' do
+  gem 'graphql', '~> 1.13.0'
+end
+
 appraise 'graphql-1.11' do
   gem 'graphql', '~> 1.11.0'
 end

instrumentation/graphql/README.md

@@ -53,6 +53,16 @@ OpenTelemetry::SDK.configure do |c|
 end
 ```
 
+Tracing can be enabled per request by setting the following keys to `true` within the GraphQL query execution context. This will add spans that provide more detail.
+
+```ruby
+query = GraphQL::Query.new(MyAppSchema, 'query { foo }')
+
+query.context.namespace(:opentelemetry)[:enable_platform_field] = true
+query.context.namespace(:opentelemetry)[:enable_platform_authorized] = true
+query.context.namespace(:opentelemetry)[:enable_platform_resolve_type] = true
+```
+
 ## Examples
 
 An example of usage can be seen in [`example/graphql.rb`](https://github.com/open-telemetry/opentelemetry-ruby-contrib/blob/main/instrumentation/graphql/example/graphql.rb).

instrumentation/graphql/example/graphql.rb

@@ -51,3 +51,22 @@ def initialize(id = 1, name = 'bar')
 puts "episodes are #{result.inspect}"
 
 result
+
+# Example of enabling tracing for specific API requests based on query execution context 
+
+OpenTelemetry::SDK.configure do |c|
+  c.use('OpenTelemetry::Instrumentation::GraphQL' => { 
+    schemas: [Schema],
+    enable_platform_field: true,
+    enable_platform_authorized: true,
+    enable_platform_resolve_type: true,
+  })
+end
+
+query = GraphQL::Query.new(Schema, '{ episode(episode_id: 5) { name } }')
+
+query.context.namespace(:opentelemetry)[:enable_platform_field] = true
+query.context.namespace(:opentelemetry)[:enable_platform_authorized] = true
+query.context.namespace(:opentelemetry)[:enable_platform_resolve_type] = true
+
+query.result