more tutorial

examples/README.md

@@ -4,4 +4,4 @@ This directory has a collection of example functions you can look at to learn mo
 
 ## Tutorial Series
 
-The [Tutorial Series](tutorial/) will demonstrate some of Oracle Functions capabilities through a series of exmaples. We'll try to examples in most major languages. This is a great place to start!
+The [Tutorial Series](tutorial/) will demonstrate some of Oracle Functions capabilities through a series of exmaples. We'll try to show examples in most major languages. This is a great place to start!

examples/tutorial/hello/go/.gitignore

@@ -0,0 +1,7 @@
+vendor/
+/hello
+/go
+/app
+/__uberscript__
+
+func.yaml

examples/tutorial/hello/go/README.md

@@ -0,0 +1,56 @@
+# Tutorial 1: Go Function w/ Input (3 minutes)
+
+This example will show you how to test and deploy Go (Golang) code to Oracle Functions. It will also demonstrate passing data in through stdin.
+
+First, run the following commands to create, run, and deploy your function:
+
+```sh
+# Initialize your function creating a func.yaml file
+fn init <DOCKERHUB_USERNAME>/hello
+
+# Test your function. This will run inside a container exactly how it will on the server
+fn run
+
+# Now try with an input
+cat hello.payload.json | fn run
+
+# Deploy your functions to the Oracle Functions server (default localhost:8080)
+# This will create a route to your function as well
+fn deploy myapp
+```
+Now call your function:
+
+```sh
+curl http://localhost:8080/r/myapp/hello
+```
+Or call from a browser: [http://localhost:8080/r/myapp/hello](http://localhost:8080/r/myapp/hello)
+
+And now with the JSON input:
+
+```sh
+curl -H "Content-Type: application/json" -X POST -d @hello.payload.json http://localhost:8080/r/myapp/hello
+```
+
+That's it!
+
+# In Review
+
+1. We piped JSON data into the function at the command line
+```sh
+cat hello.payload.json | fn run
+```
+2. We received our input through stdin
+```go
+json.NewDecoder(os.Stdin).Decode(p)
+```
+3. We wrote our output to stdout
+```go
+fmt.Printf("Hello")
+```
+4. We sent stderr to the server logs
+```go
+log.Println("here")
+```
+
+# Next Up
+## [Tutorial 2: Input Parameters](examples/tutorial/params)

examples/tutorial/hello/go/func.go

@@ -0,0 +1,20 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"os"
+)
+
+type Person struct {
+	Name string
+}
+
+func main() {
+	p := &Person{Name: "World"}
+	json.NewDecoder(os.Stdin).Decode(p)
+	fmt.Printf("Hello %v!\n", p.Name)
+
+	log.Println("---> stderr goes to the server logs.")
+}

examples/tutorial/hello/go/hello.payload.json

@@ -0,0 +1,3 @@
+{
+    "name": "Johnny"
+}

examples/tutorial/hello/node/.gitignore

@@ -0,0 +1,3 @@
+node_modules/
+func.yaml
+Dockerfile

examples/tutorial/hello/node/README.md

@@ -0,0 +1,41 @@
+## Quick Example for a NodeJS Function (4 minutes)
+
+This example will show you how to test and deploy a Node function to Oracle Functions.
+
+```sh
+# create your func.yaml file
+fn init <YOUR_DOCKERHUB_USERNAME>/hello
+# build the function
+fn build
+# test it
+cat hello.payload.json | fn run
+# push it to Docker Hub
+fn push
+# Create a route to this function on Oracle Functions
+fn routes create myapp /hello
+```
+
+Now surf to: http://localhost:8080/r/myapp/hello
+
+## Dependencies
+
+Create a [package.json](https://docs.npmjs.com/getting-started/using-a-package.json) file in your functions directory.
+
+Run:
+
+```sh
+docker run --rm -v "$PWD":/function -w /function funcy/node:dev npm install
+```
+
+Then everything should work.
+
+For example, using the `package.json` file in this directory which includes the [request](https://www.npmjs.com/package/request) package, you can add this to func.js and it will work:
+
+```js
+var request = require('request');
+request('http://www.google.com', function (error, response, body) {
+  if (!error && response.statusCode == 200) {
+    console.log(body) // Show the HTML for the Google homepage.
+  }
+})
+```

examples/tutorial/hello/node/func.js

@@ -0,0 +1,9 @@
+name = "World";
+fs = require('fs');
+try {
+	obj = JSON.parse(fs.readFileSync('/dev/stdin').toString())
+	if (obj.name != "") {
+		name = obj.name
+	}
+} catch(e) {}
+console.log("Hello", name, "from Node!");

examples/tutorial/hello/node/hello.payload.json

@@ -0,0 +1,3 @@
+{
+    "name": "Johnny"
+}

examples/tutorial/hello/node/package.json

@@ -0,0 +1,7 @@
+{
+  "name": "my-awesome-func",
+  "version": "1.0.0",
+   "dependencies": {
+    "request": "^2.78.0"
+  }
+}

examples/tutorial/hello/php/.gitignore

@@ -0,0 +1 @@
+vendor/

examples/tutorial/hello/php/Dockerfile

@@ -0,0 +1,6 @@
+FROM funcy/php
+
+WORKDIR /app
+ADD . /app
+
+ENTRYPOINT ["php", "hello.php"]

examples/tutorial/hello/php/README.md

@@ -0,0 +1,48 @@
+## Quick Example for a PHP Function (4 minutes)
+
+This example will show you how to test and deploy Go (Golang) code to Oracle Functions.
+
+### 1. Prepare the `func.yaml` file:
+
+At func.yaml you will find:
+
+```yml
+name: USERNAME/hello
+version: 0.0.1
+path: /hello
+build:
+- docker run --rm -v "$PWD":/worker -w /worker funcy/php:dev composer install
+```
+
+The important step here is to ensure you replace `USERNAME` with your Docker Hub account name. Some points of note:
+the application name is `phpapp` and the route for incoming requests is `/hello`. These informations are relevant for
+the moment you try to test this function.
+
+### 2. Build:
+
+```sh
+# build the function
+fn build
+# test it
+cat hello.payload.json | fn run
+# push it to Docker Hub
+fn push
+# Create a route to this function on Oracle Functions
+fn routes create phpapp /hello
+```
+
+`-v` is optional, but it allows you to see how this function is being built.
+
+### 3. Queue jobs for your function
+
+Now you can start jobs on your function. Let's quickly queue up a job to try it out.
+
+```sh
+cat hello.payload.json | fn call phpapp /hello
+```
+
+Here's a curl example to show how easy it is to do in any language:
+
+```sh
+curl -H "Content-Type: application/json" -X POST -d @hello.payload.json http://localhost:8080/r/phpapp/hello
+```

examples/tutorial/hello/php/composer.json

@@ -0,0 +1,4 @@
+{
+    "require": {
+    }
+}

examples/tutorial/hello/php/func.yaml

@@ -0,0 +1,5 @@
+name: USERNAME/hello
+version: 0.0.1
+path: /hello
+build:
+- docker run --rm -v "$PWD":/worker -w /worker funcy/php:dev composer install

examples/tutorial/hello/php/hello.payload.json

@@ -0,0 +1,3 @@
+{
+    "name": "Johnny"
+}

examples/tutorial/hello/php/hello.php

@@ -0,0 +1,10 @@
+<?php
+require 'vendor/autoload.php';
+
+stream_set_blocking(STDIN, 0);
+$payload = json_decode(file_get_contents("php://stdin"), true);
+if (isset($payload['name'])) {
+    echo "Hello ", $payload['name'],"!\n\n";
+} else {
+    echo "Hello World!\n\n";
+}

examples/tutorial/hello/python/.gitignore

@@ -0,0 +1,2 @@
+packages/
+func.yaml

examples/tutorial/hello/python/Dockerfile

@@ -0,0 +1,6 @@
+FROM funcy/python:2
+
+WORKDIR /app
+ADD . /app
+
+ENTRYPOINT ["python", "hello.py"]

examples/tutorial/hello/python/README.md

@@ -0,0 +1,48 @@
+## Quick Example for a Python Function (4 minutes)
+
+This example will show you how to test and deploy Go (Golang) code to Oracle Functions.
+
+### 1. Prepare the `func.yaml` file:
+
+At func.yaml you will find:
+
+```yml
+name: USERNAME/hello
+version: 0.0.1
+path: /hello
+build:
+- docker run --rm -v "$PWD":/worker -w /worker funcy/python:2-dev pip install -t packages -r requirements.txt
+```
+
+The important step here is to ensure you replace `USERNAME` with your Docker Hub account name. Some points of note:
+the application name is `pythonapp` and the route for incoming requests is `/hello`. These informations are relevant for
+the moment you try to test this function.
+
+### 2. Build:
+
+```sh
+# build the function
+fn build
+# test it
+cat hello.payload.json | fn run
+# push it to Docker Hub
+fn push
+# Create a route to this function on Oracle Functions
+fn routes create pythonapp /hello
+```
+
+`-v` is optional, but it allows you to see how this function is being built.
+
+### 3. Queue jobs for your function
+
+Now you can start jobs on your function. Let's quickly queue up a job to try it out.
+
+```sh
+cat hello.payload.json | fn call pythonapp /hello
+```
+
+Here's a curl example to show how easy it is to do in any language:
+
+```sh
+curl -H "Content-Type: application/json" -X POST -d @hello.payload.json http://localhost:8080/r/pythonapp/hello
+```

examples/tutorial/hello/python/hello.payload.json

@@ -0,0 +1,3 @@
+{
+    "name": "Johnny"
+}

examples/tutorial/hello/python/hello.py

@@ -0,0 +1,12 @@
+import sys
+sys.path.append("packages")
+import os
+import json
+
+name = "World"
+if not os.isatty(sys.stdin.fileno()):
+	obj = json.loads(sys.stdin.read())
+	if obj["name"] != "":
+		name = obj["name"]
+
+print "Hello", name, "!!!"

examples/tutorial/hello/ruby/.gitignore

@@ -0,0 +1,5 @@
+bundle/
+.bundle/
+func.yaml
+Dockerfile
+Gemfile.lock

examples/tutorial/hello/ruby/Gemfile

@@ -0,0 +1,4 @@
+source 'https://rubygems.org'
+
+gem 'httparty', '~> 0.14.0'
+gem 'json', '> 1.8.2'

examples/tutorial/hello/ruby/README.md

@@ -0,0 +1,44 @@
+## Quick Example for a Ruby Function (4 minutes)
+
+This example will show you how to test and deploy a Ruby function to Oracle Functions.
+
+```sh
+# create your func.yaml file
+fn init <YOUR_DOCKERHUB_USERNAME>/hello
+# install dependencies, we need the json gem to run this
+docker run --rm -it -v ${pwd}:/worker -w /worker funcy/ruby:dev bundle install --standalone --clean
+# build the function
+fn build
+# test it
+cat hello.payload.json | fn run
+# push it to Docker Hub
+fn push
+# Create a route to this function on Oracle Functions
+fn routes create myapp /hello
+```
+
+Now surf to: http://localhost:8080/r/myapp/hello
+
+## Dependencies
+
+Create a [Gemfile](http://bundler.io/gemfile.html) file in your function directory, then run:
+
+```sh
+docker run --rm -it -v ${pwd}:/worker -w /worker funcy/ruby:dev bundle install --standalone --clean
+```
+
+Ruby doesn't pick up the gems automatically, so you'll have to add this to the top of your `func.rb` file:
+
+```ruby
+require_relative 'bundle/bundler/setup'
+```
+
+Open `func.rb` to see it in action.
+
+To update dependencies:
+
+```sh
+docker run --rm -it -v ${pwd}:/worker -w /worker funcy/ruby:dev bundle update
+# then install again to vendor them
+docker run --rm -it -v ${pwd}:/worker -w /worker funcy/ruby:dev bundle update
+```

examples/tutorial/hello/ruby/func.rb

@@ -0,0 +1,12 @@
+require_relative 'bundle/bundler/setup'
+require 'json'
+
+name = "World"
+
+payload = STDIN.read
+if payload != ""
+    payload = JSON.parse(payload)
+    name = payload['name']
+end
+
+puts "Hello #{name} from Ruby!"

examples/tutorial/hello/ruby/hello.payload.json

@@ -0,0 +1,3 @@
+{
+    "name": "Johnny"
+}

examples/tutorial/hello/rust/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "func"
+version = "0.1.0"
+authors = ["Seif Lotfy <seif@iron.io>"]
+
+[dependencies]

examples/tutorial/hello/rust/README.md

@@ -0,0 +1,33 @@
+# Using rust with functions
+
+The easiest way to create a function in rust is via ***cargo*** and ***fn***.
+
+## Prerequisites
+
+First create an epty rust project as follows:
+
+```bash
+cargo init --name func --bin
+```
+
+Make sure the project name is ***func*** and is of type ***bin***. Now just edit your code, once done you can create a function.
+
+## Creating a function
+
+Simply run
+
+```bash
+fn init --runtime=rust <username>/<funcname>
+```
+
+This will create the ```func.yaml``` file required by functions, which can be built by running:
+
+```bash
+fn build
+```
+
+## Testing
+
+```bash
+fn run
+```

examples/tutorial/hello/rust/src/main.rs

@@ -0,0 +1,10 @@
+use std::io;
+use std::io::Read;
+
+fn main() {
+    let mut buffer = String::new();
+    let stdin = io::stdin();
+    if stdin.lock().read_to_string(&mut buffer).is_ok() {
+        println!("Hello {}", buffer.trim());
+    }
+}

examples/tutorial/hotfunctions/http/func.go

@@ -0,0 +1,45 @@
+package main
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"strconv"
+)
+
+func main() {
+	for {
+		res := http.Response{
+			Proto:      "HTTP/1.1",
+			ProtoMajor: 1,
+			ProtoMinor: 1,
+			StatusCode: 200,
+			Status:     "OK",
+		}
+
+		r := bufio.NewReader(os.Stdin)
+		req, err := http.ReadRequest(r)
+
+		var buf bytes.Buffer
+		if err != nil {
+			res.StatusCode = 500
+			res.Status = http.StatusText(res.StatusCode)
+			fmt.Fprintln(&buf, err)
+		} else {
+			l, _ := strconv.Atoi(req.Header.Get("Content-Length"))
+			p := make([]byte, l)
+			r.Read(p)
+			fmt.Fprintf(&buf, "Hello %s\n", p)
+			for k, vs := range req.Header {
+				fmt.Fprintf(&buf, "ENV: %s %#v\n", k, vs)
+			}
+		}
+
+		res.Body = ioutil.NopCloser(&buf)
+		res.ContentLength = int64(buf.Len())
+		res.Write(os.Stdout)
+	}
+}

examples/tutorial/hotfunctions/http/hotroute.json

@@ -0,0 +1,9 @@
+{"route":{
+  "app_name": "myapp",
+  "path": "/hot",
+  "image": "USERNAME/hchttp",
+  "memory": 64,
+  "type": "sync",
+  "config": null,
+  "format": "http"
+}}

examples/tutorial/index.md

@@ -0,0 +1,7 @@
+
+# Tutorial Series
+
+1. [Tutorial 1](examples/tutorial/hello): Learn the basics about sending data into your function
+2. [Tutorial 2](examples/tutorial/params): Learn how to get parameters from a web request
+3. [Tutorial 3](examples/tutorial/hotfunctions): Write your first HotFunction (stays alive to minimze latency between requests)
+4. [Tutorial 4](): TBD

examples/tutorial/params/func.go

@@ -0,0 +1,30 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"net/url"
+	"os"
+)
+
+func main() {
+	s := os.Getenv("REQUEST_URL")
+
+	fmt.Printf("REQUEST_URL --> %v\n\n", s)
+
+	u, err := url.Parse(s)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	m, _ := url.ParseQuery(u.RawQuery)
+
+	if len(m) == 0 {
+		fmt.Println("Try adding some URL params like &id=123")
+	} else {
+		for k, v := range m {
+			fmt.Printf("found param: %v, val: %v\n", k, v[0])
+		}
+	}
+
+}

examples/tutorial/params/func.yaml

@@ -0,0 +1,6 @@
+name: carimura2/fn3_request
+version: 0.0.6
+runtime: go
+entrypoint: ./func
+path: /fn3
+max_concurrency: 1