add sample app for chalice integration (#119)

chalice-rest-api/.chalice/config.json

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+{
+  "version": "2.0",
+  "app_name": "chalice-rest-api",
+  "stages": {
+    "dev": {
+      "api_gateway_stage": "api"
+    }
+  }
+}

chalice-rest-api/.gitignore

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+.chalice/deployments/
+.chalice/venv/

chalice-rest-api/README.md

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+# LocalStack Demo: Chalice REST API
+
+Simple demo application illustrating AWS Chalice integration in LocalStack. The AWS Chalice integration features a REST API which can be tested locally and put to production using the [LocalStack's AWS Chalice client](https://github.com/localstack/chalice-local).
+
+## Prerequisites
+
+- LocalStack
+- Docker
+- `chalice-local`
+
+## Installing
+
+To install the dependencies:
+
+```sh
+pip3 install -r requirements-dev.txt
+```
+
+## Running
+
+Make sure that LocalStack is started:
+
+```sh
+localstack start -d
+```
+
+Start the local-server via:
+
+```sh
+chalice-local local
+```
+
+You will see the following logs on the terminal:
+
+```sh
+Serving on http://127.0.0.1:8000
+```
+
+## License
+
+This code is available under the Apache 2.0 license.

chalice-rest-api/app.py

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+from chalice import Chalice, NotFoundError, Response
+
+app = Chalice(app_name='todo-app')
+app.debug = True
+
+TODO_ITEMS = {
+    '1': {
+        'item': 'Run LocalStack in detached mode'
+    },
+    '2': {
+        'item': 'Run your Chalice REST API with LocalStack'
+    }
+}
+
+@app.route('/')
+def index():
+    return {'localstack': 'chalice integration'}
+
+@app.route('/health')
+def health_check():
+    return Response(status_code=200, body="ok\n", headers={'Content-Type': 'text/plain'})
+
+@app.route('/todo')
+def todos():
+    items = [ v for k, v in TODO_ITEMS.items() ]
+
+    params = app.current_request.query_params
+    if params:
+        offset = int(params.get('offset', 0))
+        size = int(params.get('size', len(TODO_ITEMS)))
+
+        return items[offset:size]
+
+    return items
+
+@app.route('/todo/{todo_id}')
+def get_todo(todo_id):
+    if todo_id in TODO_ITEMS:
+        return TODO_ITEMS[todo_id]
+    raise NotFoundError
+
+@app.route('/todo/{todo_id}', methods=["DELETE"])
+def delete_todo(todo_id):
+    item = TODO_ITEMS[todo_id]
+    del TODO_ITEMS[todo_id]
+    return item
+
+@app.route('/todo/{todo_id}', methods=["POST", "PUT"])
+def update_todo(todo_id):
+    if app.current_request.method == "POST":
+        TODO_ITEMS[todo_id].update(app.current_request.json_body)
+    else:
+        TODO_ITEMS[todo_id] = app.current_request.json_body
+    return TODO_ITEMS[todo_id]
+
+@app.route('/introspect')
+def introspect():
+    return app.current_request.to_dict()
+
+@app.route('/todo', methods=["POST"])
+def add_todo():
+    todo = app.current_request.json_body
+    new_id = str(len(TODO_ITEMS) + 1)
+    TODO_ITEMS[new_id] = todo
+    return todo

chalice-rest-api/requirements-dev.txt

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+chalice==1.27.1
+pytest
+chalice-local

chalice-rest-api/tests/test_app.py

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+from chalice.test import Client
+from app import app
+
+
+def test_index():
+    with Client(app) as client:
+        response = client.http.get('/')
+        assert response.json_body == {'localstack': 'chalice integration'}