bitbake: hashserv: Add SQLalchemy backend

Adds an SQLAlchemy backend to the server. While this database backend is
slower than the more direct sqlite backend, it easily supports just
about any SQL server, which is useful for large scale deployments.

(Bitbake rev: e0b73466dd7478c77c82f46879246c1b68b228c0)

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

bitbake/lib/bb/asyncrpc/connection.py

@@ -7,6 +7,7 @@
 import asyncio
 import itertools
 import json
+from datetime import datetime
 from .exceptions import ClientError, ConnectionClosedError
 
 
@@ -30,6 +31,12 @@ def chunkify(msg, max_chunk):
         yield "\n"
 
 
+def json_serialize(obj):
+    if isinstance(obj, datetime):
+        return obj.isoformat()
+    raise TypeError("Type %s not serializeable" % type(obj))
+
+
 class StreamConnection(object):
     def __init__(self, reader, writer, timeout, max_chunk=DEFAULT_MAX_CHUNK):
         self.reader = reader
@@ -42,7 +49,7 @@ class StreamConnection(object):
         return self.writer.get_extra_info("peername")
 
     async def send_message(self, msg):
-        for c in chunkify(json.dumps(msg), self.max_chunk):
+        for c in chunkify(json.dumps(msg, default=json_serialize), self.max_chunk):
             self.writer.write(c.encode("utf-8"))
         await self.writer.drain()
 
@@ -105,7 +112,7 @@ class WebsocketConnection(object):
         return ":".join(str(s) for s in self.socket.remote_address)
 
     async def send_message(self, msg):
-        await self.send(json.dumps(msg))
+        await self.send(json.dumps(msg, default=json_serialize))
 
     async def recv_message(self):
         m = await self.recv()