ericmoritz/.gitignore

## .gitignore
*.pyc
*~
.env/
static/
data/
*_pb2.py

## README.md

      
    Raw
  

              README.md
            
          
    An example of a protobuf based web service.

  
## either.js
function Right(v) {
    return {
	'bind': function(f) { return f(v); },
	'is_right': true,
	'is_left': false,
	'either': function(_, rf) { return rf(v) },
    }
}

function Left(v) {
    return {
	'bind': function(f) { return Left(v); },
	'is_right': false,
	'is_left': true,
	'either': function(lf, _) { return lf(v) },
    }
}

function catchEither(f) {
    try {
        return Right(f());
    } catch(err) {
        return Left(err);
    }
}

## generate_data.py
from things_pb2 import Person, Animal


people = {
    "em": {"name": "Eric", "age": 33},
    "jh": {"name": "Jonathan"},
    "sl": {"name": "Steven"},
    "fc": {"name": "Frankln Clinton"},
}


animals = {
    "dog": {"type": "dog"},
    "chop": {"type": "dog", "name": "Chop", "owner_key": 'fc'},
}


def _person_msg(p, key, data):
    p.key = key
    for key, value in data.items():
        setattr(p, key, value)
    return p


def _animal_msg(a, key, data):
    a = Animal()
    a.key = key
    for key, value in data.items():
        setattr(a, key, value)

        # denormalize the owner
        if key == 'owner_key':
            _person_msg(a.owner, value, people[value])
    return a


def write_msg(bucket, key, msg):
    with open('data/{bucket}/{key}'.format(**locals()), 'wb') as fh:
        fh.write(msg.SerializeToString())


for key, value in people.items():
    write_msg(
        "people",
        key,
        _person_msg(Person(), key, value))

for key, value in animals.items():
    write_msg(
        "animals",
        key,
        _animal_msg(Animal(), key, value))

## index.html
<!doctype html>
<html>

<head>
<script src="/static/Long.min.js"></script>
<script src="/static/ByteBuffer.min.js"></script>
<script src="/static/ProtoBuf.min.js"></script>
<script src="/static/jquery.min.js"></script>
<script src="either.js"></script>
<script src="main.js"></script>

</head>
</html>

## main.js
var ProtoBuf = dcodeIO.ProtoBuf;
var builder = ProtoBuf.protoFromFile("things.proto")

var Person = builder.build("things.Person");
var Animal = builder.build("things.Animal");


function display(obj) {
    document.write(JSON.stringify(obj) + "<br/>");
}

function logError(err) {
    console.error(err.toString());
}

function handlePerson(bin) {
    catchEither(
	function() { return Person.decode(bin) }
    )
       .either(logError, display);
}

function handleAnimal(bin) {
    catchEither(
	function() { return Animal.decode(bin) }
    )
        .either(logError, display);
}


function main() {
    jQuery.get("data/people/em", handlePerson);
    jQuery.get("data/people/fc", handlePerson);
    jQuery.get("data/people/jh", handlePerson);
    jQuery.get("data/people/sl", handlePerson);
    jQuery.get("data/animals/chop", handlePerson); // oops not a person
    jQuery.get("data/animals/chop", handleAnimal);
}

jQuery(document).ready(main);


## Makefile
.PHONY: clean build

build: static data things_pb2.py

clean:
	rm -f *~ *.pyc *_pb2.py
	rm -rf data/
	rm -rf static/

server: build
	python -m SimpleHTTPServer


static:
	mkdir -p static
	curl -o static/Long.min.js https://raw.github.com/dcodeIO/Long.js/master/Long.min.js
	curl -o static/ByteBuffer.min.js https://raw.github.com/dcodeIO/ByteBuffer.js/master/ByteBuffer.min.js
	curl -o static/ProtoBuf.min.js https://raw.github.com/dcodeIO/ProtoBuf.js/master/ProtoBuf.min.js
	curl -o static/jquery.min.js http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js

data: things_pb2.py
	mkdir -p data/people
	mkdir -p data/animals
	python generate_data.py

things_pb2.py:
	protoc --python_out=. things.proto

## things.proto
package things;

message Person {
  required string key = 1;
  required string name = 2;
  optional uint32 age = 3;
}


message Animal {
  required string key = 1;
  required string type = 2;
  optional string name = 3;
  optional string owner_key = 4;
  optional Person owner = 5;
}
	function Right(v) {
	return {
	'bind': function(f) { return f(v); },
	'is_right': true,
	'is_left': false,
	'either': function(_, rf) { return rf(v) },
	}
	}

	function Left(v) {
	return {
	'bind': function(f) { return Left(v); },
	'is_right': false,
	'is_left': true,
	'either': function(lf, _) { return lf(v) },
	}
	}

	function catchEither(f) {
	try {
	return Right(f());
	} catch(err) {
	return Left(err);
	}
	}
	from things_pb2 import Person, Animal


	people = {
	"em": {"name": "Eric", "age": 33},
	"jh": {"name": "Jonathan"},
	"sl": {"name": "Steven"},
	"fc": {"name": "Frankln Clinton"},
	}


	animals = {
	"dog": {"type": "dog"},
	"chop": {"type": "dog", "name": "Chop", "owner_key": 'fc'},
	}


	def _person_msg(p, key, data):
	p.key = key
	for key, value in data.items():
	setattr(p, key, value)
	return p


	def _animal_msg(a, key, data):
	a = Animal()
	a.key = key
	for key, value in data.items():
	setattr(a, key, value)

	# denormalize the owner
	if key == 'owner_key':
	_person_msg(a.owner, value, people[value])
	return a


	def write_msg(bucket, key, msg):
	with open('data/{bucket}/{key}'.format(**locals()), 'wb') as fh:
	fh.write(msg.SerializeToString())


	for key, value in people.items():
	write_msg(
	"people",
	key,
	_person_msg(Person(), key, value))

	for key, value in animals.items():
	write_msg(
	"animals",
	key,
	_animal_msg(Animal(), key, value))
	<!doctype html>
	<html>

	<head>
	<script src="/static/Long.min.js"></script>
	<script src="/static/ByteBuffer.min.js"></script>
	<script src="/static/ProtoBuf.min.js"></script>
	<script src="/static/jquery.min.js"></script>
	<script src="either.js"></script>
	<script src="main.js"></script>

	</head>
	</html>
	var ProtoBuf = dcodeIO.ProtoBuf;
	var builder = ProtoBuf.protoFromFile("things.proto")

	var Person = builder.build("things.Person");
	var Animal = builder.build("things.Animal");


	function display(obj) {
	document.write(JSON.stringify(obj) + "<br/>");
	}

	function logError(err) {
	console.error(err.toString());
	}

	function handlePerson(bin) {
	catchEither(
	function() { return Person.decode(bin) }
	)
	.either(logError, display);
	}

	function handleAnimal(bin) {
	catchEither(
	function() { return Animal.decode(bin) }
	)
	.either(logError, display);
	}


	function main() {
	jQuery.get("data/people/em", handlePerson);
	jQuery.get("data/people/fc", handlePerson);
	jQuery.get("data/people/jh", handlePerson);
	jQuery.get("data/people/sl", handlePerson);
	jQuery.get("data/animals/chop", handlePerson); // oops not a person
	jQuery.get("data/animals/chop", handleAnimal);
	}

	jQuery(document).ready(main);
	.PHONY: clean build

	build: static data things_pb2.py

	clean:
	rm -f ~ .pyc *_pb2.py
	rm -rf data/
	rm -rf static/

	server: build
	python -m SimpleHTTPServer


	static:
	mkdir -p static
	curl -o static/Long.min.js https://raw.github.com/dcodeIO/Long.js/master/Long.min.js
	curl -o static/ByteBuffer.min.js https://raw.github.com/dcodeIO/ByteBuffer.js/master/ByteBuffer.min.js
	curl -o static/ProtoBuf.min.js https://raw.github.com/dcodeIO/ProtoBuf.js/master/ProtoBuf.min.js
	curl -o static/jquery.min.js http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js

	data: things_pb2.py
	mkdir -p data/people
	mkdir -p data/animals
	python generate_data.py

	things_pb2.py:
	protoc --python_out=. things.proto
	package things;

	message Person {
	required string key = 1;
	required string name = 2;
	optional uint32 age = 3;
	}


	message Animal {
	required string key = 1;
	required string type = 2;
	optional string name = 3;
	optional string owner_key = 4;
	optional Person owner = 5;
	}