Gunicorn worker

sanic/app.py

@@ -578,6 +578,10 @@ class Sanic:
         """This kills the Sanic"""
         get_event_loop().stop()
 
+    def __call__(self):
+        """gunicorn compatibility"""
+        return self
+
     async def create_server(self, host="127.0.0.1", port=8000, debug=False,
                             before_start=None, after_start=None,
                             before_stop=None, after_stop=None, ssl=None,
@@ -686,6 +690,7 @@ class Sanic:
             server_settings['run_async'] = True
 
         # Serve
+        if host and port:
             proto = "http"
             if ssl is not None:
                 proto = "https"

sanic/worker.py

@@ -0,0 +1,63 @@
+import asyncio
+import os
+
+import uvloop
+import gunicorn.workers.base as base
+
+
+class GunicornWorker(base.Worker):
+
+    def __init__(self, *args, **kw):  # pragma: no cover
+        super().__init__(*args, **kw)
+        self.servers = []
+        self.connections = {}
+
+    def init_process(self):
+        # create new event_loop after fork
+        asyncio.get_event_loop().close()
+
+        asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
+        self.loop = asyncio.new_event_loop()
+        asyncio.set_event_loop(self.loop)
+
+        super().init_process()
+
+    def run(self):
+        self._runner = asyncio.async(self._run(), loop=self.loop)
+
+        try:
+            self.loop.run_until_complete(self._runner)
+        finally:
+            self.loop.close()
+
+    async def close(self):
+        try:
+            if hasattr(self.wsgi, 'close'):
+                await self.wsgi.close()
+        except:
+            self.log.exception('Process shutdown exception')
+
+    async def _run(self):
+        for sock in self.sockets:
+            self.servers.append(await self.app.callable.create_server(
+                sock=sock, host=None, port=None, loop=self.loop))
+
+        # If our parent changed then we shut down.
+        pid = os.getpid()
+        try:
+            while self.alive:
+                self.notify()
+
+                if pid == os.getpid() and self.ppid != os.getppid():
+                    self.alive = False
+                    self.log.info("Parent changed, shutting down: %s", self)
+                else:
+                    await asyncio.sleep(1.0, loop=self.loop)
+        except (Exception, BaseException, GeneratorExit, KeyboardInterrupt):
+            pass
+
+        if self.servers:
+            for server in self.servers:
+                server.close()
+
+        await self.close()