asyncrpc: Abstract sockets

Rewrites the asyncrpc client and server code to make it possible to have
other transport backends that are not stream based (e.g. websockets
which are message based). The connection handling classes are now shared
between both the client and server to make it easier to implement new
transport mechanisms

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 19 insertions, 19 deletions

diff --git a/lib/hashserv/client.py b/lib/hashserv/client.py
index f676d267f..5f7d22ab1 100644
--- a/lib/hashserv/client.py
+++ b/lib/hashserv/client.py
@@ -28,24 +28,24 @@ class AsyncClient(bb.asyncrpc.AsyncClient):
 
     async def send_stream(self, msg):
         async def proc():
-            self.writer.write(("%s\n" % msg).encode("utf-8"))
-            await self.writer.drain()
-            l = await self.reader.readline()
-            if not l:
-                raise ConnectionError("Connection closed")
-            return l.decode("utf-8").rstrip()
+            await self.socket.send(msg)
+            return await self.socket.recv()
 
         return await self._send_wrapper(proc)
 
     async def _set_mode(self, new_mode):
+        async def stream_to_normal():
+            await self.socket.send("END")
+            return await self.socket.recv()
+
         if new_mode == self.MODE_NORMAL and self.mode == self.MODE_GET_STREAM:
-            r = await self.send_stream("END")
+            r = await self._send_wrapper(stream_to_normal)
             if r != "ok":
-                raise ConnectionError("Bad response from server %r" % r)
+                raise ConnectionError("Unable to transition to normal mode: Bad response from server %r" % r)
         elif new_mode == self.MODE_GET_STREAM and self.mode == self.MODE_NORMAL:
-            r = await self.send_message({"get-stream": None})
+            r = await self.invoke({"get-stream": None})
             if r != "ok":
-                raise ConnectionError("Bad response from server %r" % r)
+                raise ConnectionError("Unable to transition to stream mode: Bad response from server %r" % r)
         elif new_mode != self.mode:
             raise Exception(
                 "Undefined mode transition %r -> %r" % (self.mode, new_mode)
@@ -67,7 +67,7 @@ class AsyncClient(bb.asyncrpc.AsyncClient):
         m["method"] = method
         m["outhash"] = outhash
         m["unihash"] = unihash
-        return await self.send_message({"report": m})
+        return await self.invoke({"report": m})
 
     async def report_unihash_equiv(self, taskhash, method, unihash, extra={}):
         await self._set_mode(self.MODE_NORMAL)
@@ -75,39 +75,39 @@ class AsyncClient(bb.asyncrpc.AsyncClient):
         m["taskhash"] = taskhash
         m["method"] = method
         m["unihash"] = unihash
-        return await self.send_message({"report-equiv": m})
+        return await self.invoke({"report-equiv": m})
 
     async def get_taskhash(self, method, taskhash, all_properties=False):
         await self._set_mode(self.MODE_NORMAL)
-        return await self.send_message(
+        return await self.invoke(
             {"get": {"taskhash": taskhash, "method": method, "all": all_properties}}
         )
 
     async def get_outhash(self, method, outhash, taskhash, with_unihash=True):
         await self._set_mode(self.MODE_NORMAL)
-        return await self.send_message(
+        return await self.invoke(
             {"get-outhash": {"outhash": outhash, "taskhash": taskhash, "method": method, "with_unihash": with_unihash}}
         )
 
     async def get_stats(self):
         await self._set_mode(self.MODE_NORMAL)
-        return await self.send_message({"get-stats": None})
+        return await self.invoke({"get-stats": None})
 
     async def reset_stats(self):
         await self._set_mode(self.MODE_NORMAL)
-        return await self.send_message({"reset-stats": None})
+        return await self.invoke({"reset-stats": None})
 
     async def backfill_wait(self):
         await self._set_mode(self.MODE_NORMAL)
-        return (await self.send_message({"backfill-wait": None}))["tasks"]
+        return (await self.invoke({"backfill-wait": None}))["tasks"]
 
     async def remove(self, where):
         await self._set_mode(self.MODE_NORMAL)
-        return await self.send_message({"remove": {"where": where}})
+        return await self.invoke({"remove": {"where": where}})
 
     async def clean_unused(self, max_age):
         await self._set_mode(self.MODE_NORMAL)
-        return await self.send_message({"clean-unused": {"max_age_seconds": max_age}})
+        return await self.invoke({"clean-unused": {"max_age_seconds": max_age}})
 
 
 class Client(bb.asyncrpc.Client):