Merge pull request #34 from rstudio/aron-simpler-content-deps

simplify content and its dependencies

__tests__/apps/flask/README.md

@@ -1,15 +1,10 @@
-# Stock Pricing Service
+# Simple Flask application
 
-## About this example
+Recreate the `manifest.json` with:
 
-An API allows you to turn your models into production services that other tools and teams can use. APIs are a great way for software engineering teams to use your models without translating them into different languages.
-
-
-## Learn more
-
-* [Flask Introduction](https://palletsprojects.com/p/flask/)
-* [Flask Documentation](https://flask.palletsprojects.com/en/1.1.x/)
-
-## Requirements
-
-* Python 2 versions 2.7 or higher; Python 3 versions 3.5 or higher
+```bash
+python3.11 -m venv env
+. ./env/bin/activate
+pip install rsconnect-python
+rsconnect write-manifest flask --overwrite .
+```

__tests__/apps/flask/app.py

@@ -1,131 +1,20 @@
-# -*- coding: utf-8 -*-
 import os
-import numpy as np
-import pandas as pd
-from flask import Flask
-from flask_restx import Api, Resource, fields
+from flask import Flask, jsonify, request, url_for
 
-# Fetch prices from local CSV using pandas
-prices = pd.read_csv(
-    os.path.join(os.path.dirname(__file__), "prices.csv"),
-    index_col=0,
-    parse_dates=True,
-)
-
-
-# Configure the Flask app using RestX for swagger documentation
 app = Flask(__name__)
-app.config["SWAGGER_UI_DOC_EXPANSION"] = "list"
-app.config["RESTX_MASK_SWAGGER"] = False
-app.config["ERROR_INCLUDE_MESSAGE"] = False
-
-
-api = Api(
-    app,
-    version="0.1.0",
-    title="Stocks API",
-    description="The Stocks API provides pricing and volatility data for a "
-    "limited number of US equities from 2010-2018",
-)
-ns = api.namespace("stocks")
-
-# Define stock and price models for marshalling and documenting response objects
-tickers_model = ns.model(
-    "Tickers",
-    {
-        "tickers": fields.List(
-            fields.String(description="Ticker of the stock"),
-            description="All available stock tickers",
-        ),
-    },
-)
-
-stock_model = ns.model(
-    "Stock",
-    {
-        "ticker": fields.String(description="Ticker of the stock"),
-        "price": fields.Float(description="Latest price of the stock"),
-        "volatility": fields.Float(description="Latest volatility of the stock price"),
-    },
-)
-
-price_model = ns.model(
-    "Price",
-    {
-        "date": fields.Date,
-        "high": fields.Float(description="High price for this date"),
-        "low": fields.Float(description="Low price for this date"),
-        "close": fields.Float(description="Closing price for this date"),
-        "volume": fields.Integer(description="Daily volume for this date"),
-        "adjusted": fields.Float(description="Split-adjusted price for this date"),
-    },
-)
-
-
-class TickerNotFound(Exception):
-    def __init__(self, ticker):
-        self.ticker = ticker
-        self.message = "Ticker `{}` not found".format(self.ticker)
-
-    def __str__(self):
-        return "TickerNotFound('{}')".format(self.ticker)
-
 
-# Our simple API only has a few GET endpoints
-@ns.route("/")
-class StockList(Resource):
-    """Shows a list of all available tickers"""
 
-    @ns.marshal_with(tickers_model)
-    def get(self):
-        tickers = prices["ticker"].unique()
-        return {"tickers": tickers}
-
-
-@ns.route("/<string:ticker>")
-@ns.response(404, "Ticker not found")
-@ns.param("ticker", "The ticker for the stock")
-class Stock(Resource):
-    """Shows the latest price and volatility for the specified stock"""
-
-    @ns.marshal_list_with(stock_model)
-    def get(self, ticker):
-        if ticker not in prices["ticker"].unique():
-            raise TickerNotFound(ticker)
-
-        ticker_prices = prices[prices["ticker"] == ticker]
-        current_price = ticker_prices["close"].last("1d").round(2)
-        current_volatility = np.log(
-            ticker_prices["adjusted"] / ticker_prices["adjusted"].shift(1)
-        ).var()
-
-        return {
-            "ticker": ticker,
-            "price": current_price,
-            "volatility": current_volatility,
+@app.route("/ping")
+def ping():
+    return jsonify(
+        {
+            "headers": dict(request.headers),
+            "environ": dict(os.environ),
+            "link": url_for("ping"),
+            "external_link": url_for("ping", _external=True),
         }
-
-
-@ns.route("/<string:ticker>/history")
-@ns.response(404, "Ticker not found")
-@ns.param("ticker", "The ticker for the stock")
-class StockHistory(Resource):
-    """Shows the price history for the specified stock"""
-
-    @ns.marshal_list_with(price_model)
-    def get(self, ticker):
-        if ticker not in prices["ticker"].unique():
-            raise TickerNotFound(ticker)
-
-        ticker_prices = prices[prices["ticker"] == ticker]
-        ticker_prices["date"] = ticker_prices.index
-        return ticker_prices.to_dict("records")
-
-
-@api.errorhandler(TickerNotFound)
-def handle_ticker_not_found(error):
-    return {"message": error.message}, 404
+    )
 
 
 if __name__ == "__main__":
-    app.run(debug=True)
+    app.run()

__tests__/apps/flask/manifest.json

@@ -1,33 +1,27 @@
 {
   "version": 1,
+  "locale": "en_US.UTF-8",
   "metadata": {
     "appmode": "python-api",
     "entrypoint": "app"
   },
-  "locale": "en_US.UTF-8",
   "python": {
-    "version": "3.8.3",
+    "version": "3.11.8",
     "package_manager": {
       "name": "pip",
-      "version": "19.2.3",
+      "version": "24.0",
       "package_file": "requirements.txt"
     }
   },
   "files": {
     "requirements.txt": {
-      "checksum": "8932b9a8a1e488ba6dac3592d8012ced"
+      "checksum": "cfdea7934019617dc8e2d9a7ea631e00"
     },
     "README.md": {
-      "checksum": "5a68ee77af4872bc1b0187a0adb26a5c"
+      "checksum": "6c47ae2907b4af6076c12704f2e3a375"
     },
     "app.py": {
-      "checksum": "9799c3b834b555cf02e5896ad2997674"
-    },
-    "prices.csv": {
-      "checksum": "e0bc27e3dd358c360863807e09079985"
-    },
-    "thumbnail.jpg": {
-      "checksum": "c25a15924781145e8831661e641e5202"
+      "checksum": "564fcab35569c7ee7b3ddc206fe8cfd0"
     }
   }
-}
+}