Use a Ruby SDK generated by API Gateway for a REST API

To install, instantiate, and call a Ruby SDK generated by API Gateway for a REST API

1. Unzip the downloaded Ruby SDK file. The generated SDK source is shown as follows.

2. Build a Ruby Gem from the generated SDK source, using the following shell commands in a terminal window:

   # change to /simplecalc-sdk directory
   cd simplecalc-sdk
   
   # build the generated gem
   gem build simplecalc-sdk.gemspec

   After this, simplecalc-sdk-1.0.0.gem becomes available.

3. Install the gem:

   gem install simplecalc-sdk-1.0.0.gem

4. Create a client application. Instantiate and initialize the Ruby SDK client in the app:

   require 'simplecalc-sdk'
   client = SimpleCalc::Client.new(
       http_wire_trace: true,
       retry_limit: 5,
       http_read_timeout: 50
   )

   If the API has authorization of the AWS_IAM type is configured, you can include the caller's Amazon credentials by supplying accessKey and secretKey during the initialization:

   require 'pet-sdk'
   client = Pet::Client.new(
       http_wire_trace: true,
       retry_limit: 5,
       http_read_timeout: 50,
       access_key_id: 'ACCESS_KEY',
       secret_access_key: 'SECRET_KEY'
   )

5. Make API calls through the SDK in the app.

   Tip

   If you are not familiar with the SDK method call conventions, you can review the client.rb file in the generated SDK lib folder. The folder contains documentation of each supported API method call.

   To discover supported operations:

   # to show supported operations:
   puts client.operation_names

   This results in the following display, corresponding to the API methods of GET /?a={.}&b={.}&op={.}, GET /{a}/{b}/{op}, and POST /, plus a payload of the {a:"…", b:"…", op:"…"} format, respectively:

   [:get_api_root, :get_ab_op, :post_api_root]

   To invoke the GET /?a=1&b=2&op=+ API method, call the following the Ruby SDK method:

   resp = client.get_api_root({a:"1", b:"2", op:"+"})

   To invoke the POST / API method with a payload of {a: "1", b: "2", "op": "+"}, call the following Ruby SDK method:

   resp = client.post_api_root(input: {a:"1", b:"2", op:"+"})

   To invoke the GET /1/2/+ API method, call the following Ruby SDK method:

   resp = client.get_ab_op({a:"1", b:"2", op:"+"})

   The successful SDK method calls return the following response:

   resp : {
       result: {
           input: {
               a: 1,
               b: 2,
               op: "+"
           },
           output: {
               c: 3
           }
       }
   }