feat: Add google-ruby-simple-http-endpoint (#675)

Author: colemanja91

google-ruby-simple-http-endpoint/Gemfile

@@ -0,0 +1,10 @@
+source "https://rubygems.org"
+
+ffargs =
+  if ::File.directory? "vendor/functions_framework"
+    { path: "vendor/functions_framework" }
+  else
+    {}
+  end
+  
+gem "functions_framework", **ffargs

google-ruby-simple-http-endpoint/README.md

@@ -0,0 +1,37 @@
+<!--
+title: 'GCF Simple HTTP Endpoint example in Ruby'
+description: This example demonstrates how to setup a simple Ruby HTTP GET endpoint on GCP Cloud Functions.
+layout: Doc
+framework: v1
+platform: 'Google Cloud'
+language: Ruby
+priority: 10
+authorLink: 'https://github.com/colemanja91'
+authorName: 'Allie Coleman'
+authorAvatar: 'https://avatars.githubusercontent.com/u/2940547?v=4s=140'
+-->
+
+# Simple HTTP Endpoint Example
+
+This example demonstrates how to setup a simple Ruby HTTP GET endpoint.
+
+## Use Cases
+
+- Wrapping an existing internal or external endpoint/service
+
+## Development
+
+The GCF Ruby environment has the following requirements:
+- The code to be invoked must be defined in the `app.rb` file using `FunctionsFramework`
+- Any dependencies must be specified in the `Gemfile`
+
+https://cloud.google.com/functions/docs/concepts/ruby-runtime
+https://github.com/GoogleCloudPlatform/functions-framework-ruby
+
+## Deploy
+
+Run the following to deploy:
+
+```bash
+serverless deploy
+```

google-ruby-simple-http-endpoint/app.rb

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+# app.rb
+require "functions_framework"
+
+FunctionsFramework.http("hello") do |request|
+  "Hello, world!\n"
+end

google-ruby-simple-http-endpoint/package.json

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+{
+  "name": "google-ruby-simple-http-endpoint",
+  "version": "0.0.1",
+  "description": "Example demonstrates how to setup a simple HTTP GET endpoint with Ruby",
+  "author": "Allie Coleman <[email protected]>",
+  "license": "MIT",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "devDependencies": {
+    "serverless-google-cloudfunctions": "^4.5.0"
+  }
+}

google-ruby-simple-http-endpoint/serverless.yml

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+service: ruby-simple-http-endpoint
+
+frameworkVersion: ">=2.70.0"
+
+package:
+  exclude:
+    - node_modules/**
+    - .gitignore
+    - .git/**
+
+plugins:
+  - serverless-google-cloudfunctions
+
+provider:
+  name: google
+  runtime: ruby27
+  project: l<projectname>
+  credentials: ~/.config/gcloud/creds.json # path must be absolute
+
+functions:
+  simpleGet:
+    handler: hello
+    events:
+      - http: path