dynamic attributes, descriptors and first concurrency examples

2015-01-17 22:40:40 -02:00
parent 0618105a47
commit dd1a53ff71
27 changed files with 1151 additions and 216 deletions
--- a/concurrency/http_charserver.py
+++ b/concurrency/http_charserver.py
@@ -0,0 +1,69 @@
+import asyncio
+from aiohttp import web
+
+from charfinder import UnicodeNameIndex
+
+TEMPLATE = '''
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>title</title>
+  </head>
+  <body>
+    <form action="/">
+      <input type="search" name="query" value="{query}">
+      <input type="submit" value="find">
+    </form>
+    <p>{message}</p>
+    <hr>
+  <pre>
+{result}
+  </pre>
+  </body>
+</html>
+'''
+
+CONTENT_TYPE = 'text/html; charset=UTF-8'
+
+index = None  # a UnicodeNameIndex instance
+
+
+@asyncio.coroutine
+def handle(request):
+    query = request.GET.get('query', '')
+    print('Query: {!r}'.format(query))
+    if query:
+        lines = list(index.find_descriptions(query))
+        res = '\n'.join(lines)
+        plural = 'es' if len(lines) > 1 else ''
+        msg = '{} match{} for {!r}'.format(len(lines), plural, query)
+    else:
+        lines = []
+        res = ''
+        msg = 'Type words describing characters, e.g. chess.'
+
+    text = TEMPLATE.format(query=query, result=res, message=msg)
+    return web.Response(content_type=CONTENT_TYPE, text=text)
+
+
+@asyncio.coroutine
+def init(loop):
+    app = web.Application(loop=loop)
+    app.router.add_route('GET', '/', handle)
+
+    server = yield from loop.create_server(app.make_handler(),
+                                           '127.0.0.1', 8080)
+    host = server.sockets[0].getsockname()
+    print('Serving on {}. Hit CTRL-C to stop.'.format(host))
+
+
+def main():
+    loop = asyncio.get_event_loop()
+    loop.run_until_complete(init(loop))
+    loop.run_forever()
+
+
+if __name__ == '__main__':
+    index = UnicodeNameIndex()
+    main()