From d6d4cd1ec02e041316582cc51dfbfdaba1c690c1 Mon Sep 17 00:00:00 2001
From: Dan Buch <daniel.buch@gmail.com>
Date: Fri, 18 May 2012 00:44:46 -0400
Subject: [PATCH] Experimenting with ActiveResource client against a non-ARes
 server

---
 ares/app.py    | 152 +++++++++++++++++++++++++++++++++++++++++++++++++
 ares/person.rb |  16 ++++++
 2 files changed, 168 insertions(+)
 create mode 100644 ares/app.py
 create mode 100644 ares/person.rb

diff --git a/ares/app.py b/ares/app.py
new file mode 100644
index 0000000..03d601f
--- /dev/null
+++ b/ares/app.py
@@ -0,0 +1,152 @@
+from __future__ import print_function
+
+import json
+import re
+import sys
+
+from pprint import pformat
+from traceback import print_exc
+from wsgiref.simple_server import make_server
+
+
+class PersonModel(object):
+    __people__ = [
+        {
+            'name': {
+                'first': 'Hammy',
+                'last': 'Spammy',
+            },
+            'age': 42,
+            'id': 1,
+        },
+        {
+            'name': {
+                'first': 'Sampers',
+                'last': 'Dancer',
+            },
+            'age': 38,
+            'id': 2
+        },
+    ]
+
+    def __init__(self):
+        self._index()
+
+    def _index(self):
+        self.__people_by_id__ = dict(((p['id'], p) for p in self.__people__))
+
+    def getall(self):
+        return self.__people__
+
+    def get(self, person_id):
+        return self.__people_by_id__[person_id]
+
+    def add(self, person):
+        person['id'] = len(self.__people__) + 1
+        self.__people__.append(person)
+        self._index()
+        return person['id']
+
+
+class PersonApp(object):
+    __routes__ = [
+        (_m, _k, re.compile('^{}$'.format(_k)), _v) for _m, _k, _v in (
+            ('GET', '/people.json', 'all'),
+            ('POST', '/people.json', 'new'),
+            ('GET', '/people/(.*)\.json', 'get'),
+            ('GET', '/', 'echo')
+        )
+    ]
+
+    def __init__(self):
+        self.people = PersonModel()
+        print('Routes = {}'.format(pformat(self.__routes__)))
+
+    def __call__(self, environ, start_response):
+        path = '/' + environ.get('PATH_INFO', '').lstrip('/')
+        request_method = environ.get('REQUEST_METHOD', 'GET')
+
+        environ.update({
+            'app.path': path,
+            'app.request_method': request_method,
+        })
+
+        method_name = 'not_found'
+        for route_req_method, route, route_re, route_method in self.__routes__:
+            if route_req_method == request_method:
+                match = route_re.match(path)
+                if match:
+                    print('Found match: {!r}'.format(match.re.pattern))
+                    environ['app.route_match'] = match
+                    method_name = route_method
+                    break
+
+        try:
+            return getattr(self, method_name)(environ, start_response)
+        except AttributeError, exc:
+            print_exc()
+            return self.not_found(environ, start_response)
+
+    def not_found(self, environ, start_response):
+        print('Nothing matched: {} {!r}'.format(
+            environ['app.request_method'], environ['app.path']
+        ))
+        return self._return_json(
+            start_response, {'error': 'Not Found'},
+            status='404 Not Found'
+        )
+
+    def bad_request(self, environ, start_response):
+        return self._return_json(
+            start_response, {'error': 'Bad Request'},
+            status='400 Bad Request'
+        )
+
+    def get(self, environ, start_response):
+        person_id = environ['app.route_match'].group(1)
+        if not person_id.isdigit():
+            return self.bad_request(environ, start_response)
+
+        person = self.people.get(int(person_id))
+        return self._return_json(start_response, {'person': person})
+
+    def all(self, environ, start_response):
+        return self._return_json(start_response, self.people.getall())
+
+    def new(self, environ, start_response):
+        person = json.loads(
+            environ['wsgi.input'].read(int(environ['CONTENT_LENGTH']))
+        )
+        person_id = self.people.add(person)
+        return self._return_json(
+            start_response, {}, status='201 Created',
+            extra_headers=[
+                ('location', '/people/{}.json'.format(person_id))
+            ]
+        )
+
+    def echo(self, environ, start_response):
+        return self._return_json(start_response, {'here?': 'yup'})
+
+    def _return_json(self, start_response, json_dict, status='200 OK',
+                     extra_headers=()):
+        body = json.dumps(json_dict)
+        start_response(status, [
+            ('content-type', 'application/x-json'),
+            ('content-length', str(len(body)))
+        ] + list(extra_headers))
+        return [body]
+
+
+def main():
+    server = make_server('0.0.0.0', 9282, PersonApp())
+    try:
+        print('Serving on 0.0.0.0:9282')
+        server.serve_forever()
+        return 1
+    except KeyboardInterrupt:
+        return 0
+
+
+if __name__ == '__main__':
+    sys.exit(main())
diff --git a/ares/person.rb b/ares/person.rb
new file mode 100644
index 0000000..252e345
--- /dev/null
+++ b/ares/person.rb
@@ -0,0 +1,16 @@
+require 'active_resource'
+require 'awesome_print'
+
+class Person < ActiveResource::Base
+  self.site = 'http://localhost:9282'
+end
+
+def main
+  Person.all.each do |person|
+    ap person
+  end
+end
+
+if $0 == __FILE__
+  main
+end